| 1 | /* Keyboard and mouse input; editor command loop. |
| 2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
| 3 | 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, |
| 4 | 2005, 2006 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs; see the file COPYING. If not, write to |
| 20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 21 | Boston, MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include <config.h> |
| 24 | #include <signal.h> |
| 25 | #include <stdio.h> |
| 26 | #include "termchar.h" |
| 27 | #include "termopts.h" |
| 28 | #include "lisp.h" |
| 29 | #include "termhooks.h" |
| 30 | #include "macros.h" |
| 31 | #include "keyboard.h" |
| 32 | #include "frame.h" |
| 33 | #include "window.h" |
| 34 | #include "commands.h" |
| 35 | #include "buffer.h" |
| 36 | #include "charset.h" |
| 37 | #include "disptab.h" |
| 38 | #include "dispextern.h" |
| 39 | #include "syntax.h" |
| 40 | #include "intervals.h" |
| 41 | #include "keymap.h" |
| 42 | #include "blockinput.h" |
| 43 | #include "puresize.h" |
| 44 | #include "systime.h" |
| 45 | #include "atimer.h" |
| 46 | #include <setjmp.h> |
| 47 | #include <errno.h> |
| 48 | |
| 49 | #ifdef HAVE_GTK_AND_PTHREAD |
| 50 | #include <pthread.h> |
| 51 | #endif |
| 52 | #ifdef MSDOS |
| 53 | #include "msdos.h" |
| 54 | #include <time.h> |
| 55 | #else /* not MSDOS */ |
| 56 | #ifndef VMS |
| 57 | #include <sys/ioctl.h> |
| 58 | #endif |
| 59 | #endif /* not MSDOS */ |
| 60 | |
| 61 | #include "syssignal.h" |
| 62 | #include "systty.h" |
| 63 | |
| 64 | #include <sys/types.h> |
| 65 | #ifdef HAVE_UNISTD_H |
| 66 | #include <unistd.h> |
| 67 | #endif |
| 68 | |
| 69 | #ifdef HAVE_FCNTL_H |
| 70 | #include <fcntl.h> |
| 71 | #endif |
| 72 | |
| 73 | /* This is to get the definitions of the XK_ symbols. */ |
| 74 | #ifdef HAVE_X_WINDOWS |
| 75 | #include "xterm.h" |
| 76 | #endif |
| 77 | |
| 78 | #ifdef HAVE_NTGUI |
| 79 | #include "w32term.h" |
| 80 | #endif /* HAVE_NTGUI */ |
| 81 | |
| 82 | #ifdef MAC_OS |
| 83 | #include "macterm.h" |
| 84 | #endif |
| 85 | |
| 86 | #ifndef USE_CRT_DLL |
| 87 | extern int errno; |
| 88 | #endif |
| 89 | |
| 90 | /* Variables for blockinput.h: */ |
| 91 | |
| 92 | /* Non-zero if interrupt input is blocked right now. */ |
| 93 | int interrupt_input_blocked; |
| 94 | |
| 95 | /* Nonzero means an input interrupt has arrived |
| 96 | during the current critical section. */ |
| 97 | int interrupt_input_pending; |
| 98 | |
| 99 | |
| 100 | /* File descriptor to use for input. */ |
| 101 | extern int input_fd; |
| 102 | |
| 103 | #ifdef HAVE_WINDOW_SYSTEM |
| 104 | /* Make all keyboard buffers much bigger when using X windows. */ |
| 105 | #ifdef MAC_OS8 |
| 106 | /* But not too big (local data > 32K error) if on Mac OS Classic. */ |
| 107 | #define KBD_BUFFER_SIZE 512 |
| 108 | #else |
| 109 | #define KBD_BUFFER_SIZE 4096 |
| 110 | #endif |
| 111 | #else /* No X-windows, character input */ |
| 112 | #define KBD_BUFFER_SIZE 4096 |
| 113 | #endif /* No X-windows */ |
| 114 | |
| 115 | #define abs(x) ((x) >= 0 ? (x) : -(x)) |
| 116 | |
| 117 | /* Following definition copied from eval.c */ |
| 118 | |
| 119 | struct backtrace |
| 120 | { |
| 121 | struct backtrace *next; |
| 122 | Lisp_Object *function; |
| 123 | Lisp_Object *args; /* Points to vector of args. */ |
| 124 | int nargs; /* length of vector. If nargs is UNEVALLED, |
| 125 | args points to slot holding list of |
| 126 | unevalled args */ |
| 127 | char evalargs; |
| 128 | /* Nonzero means call value of debugger when done with this operation. */ |
| 129 | char debug_on_exit; |
| 130 | }; |
| 131 | |
| 132 | #ifdef MULTI_KBOARD |
| 133 | KBOARD *initial_kboard; |
| 134 | KBOARD *current_kboard; |
| 135 | KBOARD *all_kboards; |
| 136 | int single_kboard; |
| 137 | #else |
| 138 | KBOARD the_only_kboard; |
| 139 | #endif |
| 140 | |
| 141 | /* Non-nil disable property on a command means |
| 142 | do not execute it; call disabled-command-function's value instead. */ |
| 143 | Lisp_Object Qdisabled, Qdisabled_command_function; |
| 144 | |
| 145 | #define NUM_RECENT_KEYS (100) |
| 146 | int recent_keys_index; /* Index for storing next element into recent_keys */ |
| 147 | int total_keys; /* Total number of elements stored into recent_keys */ |
| 148 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
| 149 | |
| 150 | /* Vector holding the key sequence that invoked the current command. |
| 151 | It is reused for each command, and it may be longer than the current |
| 152 | sequence; this_command_key_count indicates how many elements |
| 153 | actually mean something. |
| 154 | It's easier to staticpro a single Lisp_Object than an array. */ |
| 155 | Lisp_Object this_command_keys; |
| 156 | int this_command_key_count; |
| 157 | |
| 158 | /* 1 after calling Freset_this_command_lengths. |
| 159 | Usually it is 0. */ |
| 160 | int this_command_key_count_reset; |
| 161 | |
| 162 | /* This vector is used as a buffer to record the events that were actually read |
| 163 | by read_key_sequence. */ |
| 164 | Lisp_Object raw_keybuf; |
| 165 | int raw_keybuf_count; |
| 166 | |
| 167 | #define GROW_RAW_KEYBUF \ |
| 168 | if (raw_keybuf_count == XVECTOR (raw_keybuf)->size) \ |
| 169 | { \ |
| 170 | int newsize = 2 * XVECTOR (raw_keybuf)->size; \ |
| 171 | Lisp_Object new; \ |
| 172 | new = Fmake_vector (make_number (newsize), Qnil); \ |
| 173 | bcopy (XVECTOR (raw_keybuf)->contents, XVECTOR (new)->contents, \ |
| 174 | raw_keybuf_count * sizeof (Lisp_Object)); \ |
| 175 | raw_keybuf = new; \ |
| 176 | } |
| 177 | |
| 178 | /* Number of elements of this_command_keys |
| 179 | that precede this key sequence. */ |
| 180 | int this_single_command_key_start; |
| 181 | |
| 182 | /* Record values of this_command_key_count and echo_length () |
| 183 | before this command was read. */ |
| 184 | static int before_command_key_count; |
| 185 | static int before_command_echo_length; |
| 186 | |
| 187 | extern int minbuf_level; |
| 188 | |
| 189 | extern int message_enable_multibyte; |
| 190 | |
| 191 | extern struct backtrace *backtrace_list; |
| 192 | |
| 193 | /* If non-nil, the function that implements the display of help. |
| 194 | It's called with one argument, the help string to display. */ |
| 195 | |
| 196 | Lisp_Object Vshow_help_function; |
| 197 | |
| 198 | /* If a string, the message displayed before displaying a help-echo |
| 199 | in the echo area. */ |
| 200 | |
| 201 | Lisp_Object Vpre_help_message; |
| 202 | |
| 203 | /* Nonzero means do menu prompting. */ |
| 204 | |
| 205 | static int menu_prompting; |
| 206 | |
| 207 | /* Character to see next line of menu prompt. */ |
| 208 | |
| 209 | static Lisp_Object menu_prompt_more_char; |
| 210 | |
| 211 | /* For longjmp to where kbd input is being done. */ |
| 212 | |
| 213 | static jmp_buf getcjmp; |
| 214 | |
| 215 | /* True while doing kbd input. */ |
| 216 | int waiting_for_input; |
| 217 | |
| 218 | /* True while displaying for echoing. Delays C-g throwing. */ |
| 219 | |
| 220 | int echoing; |
| 221 | |
| 222 | /* Non-null means we can start echoing at the next input pause even |
| 223 | though there is something in the echo area. */ |
| 224 | |
| 225 | static struct kboard *ok_to_echo_at_next_pause; |
| 226 | |
| 227 | /* The kboard last echoing, or null for none. Reset to 0 in |
| 228 | cancel_echoing. If non-null, and a current echo area message |
| 229 | exists, and echo_message_buffer is eq to the current message |
| 230 | buffer, we know that the message comes from echo_kboard. */ |
| 231 | |
| 232 | struct kboard *echo_kboard; |
| 233 | |
| 234 | /* The buffer used for echoing. Set in echo_now, reset in |
| 235 | cancel_echoing. */ |
| 236 | |
| 237 | Lisp_Object echo_message_buffer; |
| 238 | |
| 239 | /* Nonzero means disregard local maps for the menu bar. */ |
| 240 | static int inhibit_local_menu_bar_menus; |
| 241 | |
| 242 | /* Nonzero means C-g should cause immediate error-signal. */ |
| 243 | int immediate_quit; |
| 244 | |
| 245 | /* The user's hook function for outputting an error message. */ |
| 246 | Lisp_Object Vcommand_error_function; |
| 247 | |
| 248 | /* The user's ERASE setting. */ |
| 249 | Lisp_Object Vtty_erase_char; |
| 250 | |
| 251 | /* Character to recognize as the help char. */ |
| 252 | Lisp_Object Vhelp_char; |
| 253 | |
| 254 | /* List of other event types to recognize as meaning "help". */ |
| 255 | Lisp_Object Vhelp_event_list; |
| 256 | |
| 257 | /* Form to execute when help char is typed. */ |
| 258 | Lisp_Object Vhelp_form; |
| 259 | |
| 260 | /* Command to run when the help character follows a prefix key. */ |
| 261 | Lisp_Object Vprefix_help_command; |
| 262 | |
| 263 | /* List of items that should move to the end of the menu bar. */ |
| 264 | Lisp_Object Vmenu_bar_final_items; |
| 265 | |
| 266 | /* Non-nil means show the equivalent key-binding for |
| 267 | any M-x command that has one. |
| 268 | The value can be a length of time to show the message for. |
| 269 | If the value is non-nil and not a number, we wait 2 seconds. */ |
| 270 | Lisp_Object Vsuggest_key_bindings; |
| 271 | |
| 272 | /* How long to display an echo-area message when the minibuffer is active. |
| 273 | If the value is not a number, such messages don't time out. */ |
| 274 | Lisp_Object Vminibuffer_message_timeout; |
| 275 | |
| 276 | /* Character that causes a quit. Normally C-g. |
| 277 | |
| 278 | If we are running on an ordinary terminal, this must be an ordinary |
| 279 | ASCII char, since we want to make it our interrupt character. |
| 280 | |
| 281 | If we are not running on an ordinary terminal, it still needs to be |
| 282 | an ordinary ASCII char. This character needs to be recognized in |
| 283 | the input interrupt handler. At this point, the keystroke is |
| 284 | represented as a struct input_event, while the desired quit |
| 285 | character is specified as a lispy event. The mapping from struct |
| 286 | input_events to lispy events cannot run in an interrupt handler, |
| 287 | and the reverse mapping is difficult for anything but ASCII |
| 288 | keystrokes. |
| 289 | |
| 290 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an |
| 291 | ASCII character. */ |
| 292 | int quit_char; |
| 293 | |
| 294 | extern Lisp_Object current_global_map; |
| 295 | extern int minibuf_level; |
| 296 | |
| 297 | /* If non-nil, this is a map that overrides all other local maps. */ |
| 298 | Lisp_Object Voverriding_local_map; |
| 299 | |
| 300 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
| 301 | Lisp_Object Voverriding_local_map_menu_flag; |
| 302 | |
| 303 | /* Keymap that defines special misc events that should |
| 304 | be processed immediately at a low level. */ |
| 305 | Lisp_Object Vspecial_event_map; |
| 306 | |
| 307 | /* Current depth in recursive edits. */ |
| 308 | int command_loop_level; |
| 309 | |
| 310 | /* Total number of times command_loop has read a key sequence. */ |
| 311 | EMACS_INT num_input_keys; |
| 312 | |
| 313 | /* Last input character read as a command. */ |
| 314 | Lisp_Object last_command_char; |
| 315 | |
| 316 | /* Last input character read as a command, not counting menus |
| 317 | reached by the mouse. */ |
| 318 | Lisp_Object last_nonmenu_event; |
| 319 | |
| 320 | /* Last input character read for any purpose. */ |
| 321 | Lisp_Object last_input_char; |
| 322 | |
| 323 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
| 324 | Lisp_Object Vunread_command_events; |
| 325 | |
| 326 | /* If not Qnil, a list of objects to be read as subsequent command input |
| 327 | including input method processing. */ |
| 328 | Lisp_Object Vunread_input_method_events; |
| 329 | |
| 330 | /* If not Qnil, a list of objects to be read as subsequent command input |
| 331 | but NOT including input method processing. */ |
| 332 | Lisp_Object Vunread_post_input_method_events; |
| 333 | |
| 334 | /* If not -1, an event to be read as subsequent command input. */ |
| 335 | EMACS_INT unread_command_char; |
| 336 | |
| 337 | /* If not Qnil, this is a switch-frame event which we decided to put |
| 338 | off until the end of a key sequence. This should be read as the |
| 339 | next command input, after any unread_command_events. |
| 340 | |
| 341 | read_key_sequence uses this to delay switch-frame events until the |
| 342 | end of the key sequence; Fread_char uses it to put off switch-frame |
| 343 | events until a non-ASCII event is acceptable as input. */ |
| 344 | Lisp_Object unread_switch_frame; |
| 345 | |
| 346 | /* A mask of extra modifier bits to put into every keyboard char. */ |
| 347 | EMACS_INT extra_keyboard_modifiers; |
| 348 | |
| 349 | /* Char to use as prefix when a meta character is typed in. |
| 350 | This is bound on entry to minibuffer in case ESC is changed there. */ |
| 351 | |
| 352 | Lisp_Object meta_prefix_char; |
| 353 | |
| 354 | /* Last size recorded for a current buffer which is not a minibuffer. */ |
| 355 | static int last_non_minibuf_size; |
| 356 | |
| 357 | /* Number of idle seconds before an auto-save and garbage collection. */ |
| 358 | static Lisp_Object Vauto_save_timeout; |
| 359 | |
| 360 | /* Total number of times read_char has returned. */ |
| 361 | int num_input_events; |
| 362 | |
| 363 | /* Total number of times read_char has returned, outside of macros. */ |
| 364 | EMACS_INT num_nonmacro_input_events; |
| 365 | |
| 366 | /* Auto-save automatically when this many characters have been typed |
| 367 | since the last time. */ |
| 368 | |
| 369 | static EMACS_INT auto_save_interval; |
| 370 | |
| 371 | /* Value of num_nonmacro_input_events as of last auto save. */ |
| 372 | |
| 373 | int last_auto_save; |
| 374 | |
| 375 | /* The command being executed by the command loop. |
| 376 | Commands may set this, and the value set will be copied into |
| 377 | current_kboard->Vlast_command instead of the actual command. */ |
| 378 | Lisp_Object Vthis_command; |
| 379 | |
| 380 | /* This is like Vthis_command, except that commands never set it. */ |
| 381 | Lisp_Object real_this_command; |
| 382 | |
| 383 | /* If the lookup of the command returns a binding, the original |
| 384 | command is stored in this-original-command. It is nil otherwise. */ |
| 385 | Lisp_Object Vthis_original_command; |
| 386 | |
| 387 | /* The value of point when the last command was started. */ |
| 388 | int last_point_position; |
| 389 | |
| 390 | /* The buffer that was current when the last command was started. */ |
| 391 | Lisp_Object last_point_position_buffer; |
| 392 | |
| 393 | /* The window that was selected when the last command was started. */ |
| 394 | Lisp_Object last_point_position_window; |
| 395 | |
| 396 | /* The frame in which the last input event occurred, or Qmacro if the |
| 397 | last event came from a macro. We use this to determine when to |
| 398 | generate switch-frame events. This may be cleared by functions |
| 399 | like Fselect_frame, to make sure that a switch-frame event is |
| 400 | generated by the next character. */ |
| 401 | Lisp_Object internal_last_event_frame; |
| 402 | |
| 403 | /* A user-visible version of the above, intended to allow users to |
| 404 | figure out where the last event came from, if the event doesn't |
| 405 | carry that information itself (i.e. if it was a character). */ |
| 406 | Lisp_Object Vlast_event_frame; |
| 407 | |
| 408 | /* The timestamp of the last input event we received from the X server. |
| 409 | X Windows wants this for selection ownership. */ |
| 410 | unsigned long last_event_timestamp; |
| 411 | |
| 412 | Lisp_Object Qself_insert_command; |
| 413 | Lisp_Object Qforward_char; |
| 414 | Lisp_Object Qbackward_char; |
| 415 | Lisp_Object Qundefined; |
| 416 | Lisp_Object Qtimer_event_handler; |
| 417 | |
| 418 | /* read_key_sequence stores here the command definition of the |
| 419 | key sequence that it reads. */ |
| 420 | Lisp_Object read_key_sequence_cmd; |
| 421 | |
| 422 | /* Echo unfinished commands after this many seconds of pause. */ |
| 423 | Lisp_Object Vecho_keystrokes; |
| 424 | |
| 425 | /* Form to evaluate (if non-nil) when Emacs is started. */ |
| 426 | Lisp_Object Vtop_level; |
| 427 | |
| 428 | /* User-supplied table to translate input characters. */ |
| 429 | Lisp_Object Vkeyboard_translate_table; |
| 430 | |
| 431 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
| 432 | extern Lisp_Object Vfunction_key_map; |
| 433 | |
| 434 | /* Another keymap that maps key sequences into key sequences. |
| 435 | This one takes precedence over ordinary definitions. */ |
| 436 | extern Lisp_Object Vkey_translation_map; |
| 437 | |
| 438 | /* If non-nil, this implements the current input method. */ |
| 439 | Lisp_Object Vinput_method_function; |
| 440 | Lisp_Object Qinput_method_function; |
| 441 | |
| 442 | /* When we call Vinput_method_function, |
| 443 | this holds the echo area message that was just erased. */ |
| 444 | Lisp_Object Vinput_method_previous_message; |
| 445 | |
| 446 | /* Non-nil means deactivate the mark at end of this command. */ |
| 447 | Lisp_Object Vdeactivate_mark; |
| 448 | |
| 449 | /* Menu bar specified in Lucid Emacs fashion. */ |
| 450 | |
| 451 | Lisp_Object Vlucid_menu_bar_dirty_flag; |
| 452 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; |
| 453 | |
| 454 | Lisp_Object Qecho_area_clear_hook; |
| 455 | |
| 456 | /* Hooks to run before and after each command. */ |
| 457 | Lisp_Object Qpre_command_hook, Vpre_command_hook; |
| 458 | Lisp_Object Qpost_command_hook, Vpost_command_hook; |
| 459 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
| 460 | |
| 461 | /* List of deferred actions to be performed at a later time. |
| 462 | The precise format isn't relevant here; we just check whether it is nil. */ |
| 463 | Lisp_Object Vdeferred_action_list; |
| 464 | |
| 465 | /* Function to call to handle deferred actions, when there are any. */ |
| 466 | Lisp_Object Vdeferred_action_function; |
| 467 | Lisp_Object Qdeferred_action_function; |
| 468 | |
| 469 | Lisp_Object Qinput_method_exit_on_first_char; |
| 470 | Lisp_Object Qinput_method_use_echo_area; |
| 471 | |
| 472 | /* File in which we write all commands we read. */ |
| 473 | FILE *dribble; |
| 474 | |
| 475 | /* Nonzero if input is available. */ |
| 476 | int input_pending; |
| 477 | |
| 478 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
| 479 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ |
| 480 | |
| 481 | int meta_key; |
| 482 | |
| 483 | extern char *pending_malloc_warning; |
| 484 | |
| 485 | /* Circular buffer for pre-read keyboard input. */ |
| 486 | |
| 487 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; |
| 488 | |
| 489 | /* Pointer to next available character in kbd_buffer. |
| 490 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. |
| 491 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the |
| 492 | next available char is in kbd_buffer[0]. */ |
| 493 | static struct input_event *kbd_fetch_ptr; |
| 494 | |
| 495 | /* Pointer to next place to store character in kbd_buffer. This |
| 496 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next |
| 497 | character should go in kbd_buffer[0]. */ |
| 498 | static struct input_event * volatile kbd_store_ptr; |
| 499 | |
| 500 | /* The above pair of variables forms a "queue empty" flag. When we |
| 501 | enqueue a non-hook event, we increment kbd_store_ptr. When we |
| 502 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that |
| 503 | there is input available iff the two pointers are not equal. |
| 504 | |
| 505 | Why not just have a flag set and cleared by the enqueuing and |
| 506 | dequeuing functions? Such a flag could be screwed up by interrupts |
| 507 | at inopportune times. */ |
| 508 | |
| 509 | /* If this flag is non-nil, we check mouse_moved to see when the |
| 510 | mouse moves, and motion events will appear in the input stream. |
| 511 | Otherwise, mouse motion is ignored. */ |
| 512 | Lisp_Object do_mouse_tracking; |
| 513 | |
| 514 | /* Symbols to head events. */ |
| 515 | Lisp_Object Qmouse_movement; |
| 516 | Lisp_Object Qscroll_bar_movement; |
| 517 | Lisp_Object Qswitch_frame; |
| 518 | Lisp_Object Qdelete_frame; |
| 519 | Lisp_Object Qiconify_frame; |
| 520 | Lisp_Object Qmake_frame_visible; |
| 521 | Lisp_Object Qselect_window; |
| 522 | Lisp_Object Qhelp_echo; |
| 523 | |
| 524 | #ifdef HAVE_MOUSE |
| 525 | Lisp_Object Qmouse_fixup_help_message; |
| 526 | #endif |
| 527 | |
| 528 | /* Symbols to denote kinds of events. */ |
| 529 | Lisp_Object Qfunction_key; |
| 530 | Lisp_Object Qmouse_click; |
| 531 | #if defined (WINDOWSNT) || defined (MAC_OS) |
| 532 | Lisp_Object Qlanguage_change; |
| 533 | #endif |
| 534 | Lisp_Object Qdrag_n_drop; |
| 535 | Lisp_Object Qsave_session; |
| 536 | #ifdef MAC_OS |
| 537 | Lisp_Object Qmac_apple_event; |
| 538 | #endif |
| 539 | |
| 540 | /* Lisp_Object Qmouse_movement; - also an event header */ |
| 541 | |
| 542 | /* Properties of event headers. */ |
| 543 | Lisp_Object Qevent_kind; |
| 544 | Lisp_Object Qevent_symbol_elements; |
| 545 | |
| 546 | /* menu item parts */ |
| 547 | Lisp_Object Qmenu_alias; |
| 548 | Lisp_Object Qmenu_enable; |
| 549 | Lisp_Object QCenable, QCvisible, QChelp, QCfilter, QCkeys, QCkey_sequence; |
| 550 | Lisp_Object QCbutton, QCtoggle, QCradio; |
| 551 | extern Lisp_Object Vdefine_key_rebound_commands; |
| 552 | extern Lisp_Object Qmenu_item; |
| 553 | |
| 554 | /* An event header symbol HEAD may have a property named |
| 555 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); |
| 556 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the |
| 557 | mask of modifiers applied to it. If present, this is used to help |
| 558 | speed up parse_modifiers. */ |
| 559 | Lisp_Object Qevent_symbol_element_mask; |
| 560 | |
| 561 | /* An unmodified event header BASE may have a property named |
| 562 | Qmodifier_cache, which is an alist mapping modifier masks onto |
| 563 | modified versions of BASE. If present, this helps speed up |
| 564 | apply_modifiers. */ |
| 565 | Lisp_Object Qmodifier_cache; |
| 566 | |
| 567 | /* Symbols to use for parts of windows. */ |
| 568 | Lisp_Object Qmode_line; |
| 569 | Lisp_Object Qvertical_line; |
| 570 | Lisp_Object Qvertical_scroll_bar; |
| 571 | Lisp_Object Qmenu_bar; |
| 572 | extern Lisp_Object Qleft_margin, Qright_margin; |
| 573 | extern Lisp_Object Qleft_fringe, Qright_fringe; |
| 574 | extern Lisp_Object QCmap; |
| 575 | |
| 576 | Lisp_Object recursive_edit_unwind (), command_loop (); |
| 577 | Lisp_Object Fthis_command_keys (); |
| 578 | Lisp_Object Qextended_command_history; |
| 579 | EMACS_TIME timer_check (); |
| 580 | |
| 581 | extern Lisp_Object Vhistory_length, Vtranslation_table_for_input; |
| 582 | |
| 583 | extern char *x_get_keysym_name (); |
| 584 | |
| 585 | static void record_menu_key (); |
| 586 | static int echo_length (); |
| 587 | |
| 588 | Lisp_Object Qpolling_period; |
| 589 | |
| 590 | /* List of absolute timers. Appears in order of next scheduled event. */ |
| 591 | Lisp_Object Vtimer_list; |
| 592 | |
| 593 | /* List of idle time timers. Appears in order of next scheduled event. */ |
| 594 | Lisp_Object Vtimer_idle_list; |
| 595 | |
| 596 | /* Incremented whenever a timer is run. */ |
| 597 | int timers_run; |
| 598 | |
| 599 | extern Lisp_Object Vprint_level, Vprint_length; |
| 600 | |
| 601 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
| 602 | happens. */ |
| 603 | EMACS_TIME *input_available_clear_time; |
| 604 | |
| 605 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. |
| 606 | Default is 1 if INTERRUPT_INPUT is defined. */ |
| 607 | int interrupt_input; |
| 608 | |
| 609 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ |
| 610 | int interrupts_deferred; |
| 611 | |
| 612 | /* Nonzero means use ^S/^Q for flow control. */ |
| 613 | int flow_control; |
| 614 | |
| 615 | /* Allow m- file to inhibit use of FIONREAD. */ |
| 616 | #ifdef BROKEN_FIONREAD |
| 617 | #undef FIONREAD |
| 618 | #endif |
| 619 | |
| 620 | /* We are unable to use interrupts if FIONREAD is not available, |
| 621 | so flush SIGIO so we won't try. */ |
| 622 | #if !defined (FIONREAD) |
| 623 | #ifdef SIGIO |
| 624 | #undef SIGIO |
| 625 | #endif |
| 626 | #endif |
| 627 | |
| 628 | /* If we support a window system, turn on the code to poll periodically |
| 629 | to detect C-g. It isn't actually used when doing interrupt input. */ |
| 630 | #if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS) |
| 631 | #define POLL_FOR_INPUT |
| 632 | #endif |
| 633 | |
| 634 | /* After a command is executed, if point is moved into a region that |
| 635 | has specific properties (e.g. composition, display), we adjust |
| 636 | point to the boundary of the region. But, if a command sets this |
| 637 | variable to non-nil, we suppress this point adjustment. This |
| 638 | variable is set to nil before reading a command. */ |
| 639 | |
| 640 | Lisp_Object Vdisable_point_adjustment; |
| 641 | |
| 642 | /* If non-nil, always disable point adjustment. */ |
| 643 | |
| 644 | Lisp_Object Vglobal_disable_point_adjustment; |
| 645 | |
| 646 | /* The time when Emacs started being idle. */ |
| 647 | |
| 648 | static EMACS_TIME timer_idleness_start_time; |
| 649 | |
| 650 | /* After Emacs stops being idle, this saves the last value |
| 651 | of timer_idleness_start_time from when it was idle. */ |
| 652 | |
| 653 | static EMACS_TIME timer_last_idleness_start_time; |
| 654 | |
| 655 | /* If non-nil, events produced by disabled menu items and tool-bar |
| 656 | buttons are not ignored. Help functions bind this to allow help on |
| 657 | those items and buttons. */ |
| 658 | Lisp_Object Venable_disabled_menus_and_buttons; |
| 659 | |
| 660 | \f |
| 661 | /* Global variable declarations. */ |
| 662 | |
| 663 | /* Flags for readable_events. */ |
| 664 | #define READABLE_EVENTS_DO_TIMERS_NOW (1 << 0) |
| 665 | #define READABLE_EVENTS_FILTER_EVENTS (1 << 1) |
| 666 | #define READABLE_EVENTS_IGNORE_SQUEEZABLES (1 << 2) |
| 667 | |
| 668 | /* Function for init_keyboard to call with no args (if nonzero). */ |
| 669 | void (*keyboard_init_hook) (); |
| 670 | |
| 671 | static int read_avail_input P_ ((int)); |
| 672 | static void get_input_pending P_ ((int *, int)); |
| 673 | static int readable_events P_ ((int)); |
| 674 | static Lisp_Object read_char_x_menu_prompt P_ ((int, Lisp_Object *, |
| 675 | Lisp_Object, int *)); |
| 676 | static Lisp_Object read_char_x_menu_prompt (); |
| 677 | static Lisp_Object read_char_minibuf_menu_prompt P_ ((int, int, |
| 678 | Lisp_Object *)); |
| 679 | static Lisp_Object make_lispy_event P_ ((struct input_event *)); |
| 680 | #ifdef HAVE_MOUSE |
| 681 | static Lisp_Object make_lispy_movement P_ ((struct frame *, Lisp_Object, |
| 682 | enum scroll_bar_part, |
| 683 | Lisp_Object, Lisp_Object, |
| 684 | unsigned long)); |
| 685 | #endif |
| 686 | static Lisp_Object modify_event_symbol P_ ((int, unsigned, Lisp_Object, |
| 687 | Lisp_Object, char **, |
| 688 | Lisp_Object *, unsigned)); |
| 689 | static Lisp_Object make_lispy_switch_frame P_ ((Lisp_Object)); |
| 690 | static int parse_solitary_modifier P_ ((Lisp_Object)); |
| 691 | static int parse_solitary_modifier (); |
| 692 | static void save_getcjmp P_ ((jmp_buf)); |
| 693 | static void save_getcjmp (); |
| 694 | static void restore_getcjmp P_ ((jmp_buf)); |
| 695 | static Lisp_Object apply_modifiers P_ ((int, Lisp_Object)); |
| 696 | static void clear_event P_ ((struct input_event *)); |
| 697 | static void any_kboard_state P_ ((void)); |
| 698 | static SIGTYPE interrupt_signal P_ ((int signalnum)); |
| 699 | static void timer_start_idle P_ ((void)); |
| 700 | static void timer_stop_idle P_ ((void)); |
| 701 | static void timer_resume_idle P_ ((void)); |
| 702 | |
| 703 | /* Nonzero means don't try to suspend even if the operating system seems |
| 704 | to support it. */ |
| 705 | static int cannot_suspend; |
| 706 | |
| 707 | extern Lisp_Object Qidentity, Qonly; |
| 708 | \f |
| 709 | /* Install the string STR as the beginning of the string of echoing, |
| 710 | so that it serves as a prompt for the next character. |
| 711 | Also start echoing. */ |
| 712 | |
| 713 | void |
| 714 | echo_prompt (str) |
| 715 | Lisp_Object str; |
| 716 | { |
| 717 | current_kboard->echo_string = str; |
| 718 | current_kboard->echo_after_prompt = SCHARS (str); |
| 719 | echo_now (); |
| 720 | } |
| 721 | |
| 722 | /* Add C to the echo string, if echoing is going on. |
| 723 | C can be a character, which is printed prettily ("M-C-x" and all that |
| 724 | jazz), or a symbol, whose name is printed. */ |
| 725 | |
| 726 | void |
| 727 | echo_char (c) |
| 728 | Lisp_Object c; |
| 729 | { |
| 730 | if (current_kboard->immediate_echo) |
| 731 | { |
| 732 | int size = KEY_DESCRIPTION_SIZE + 100; |
| 733 | char *buffer = (char *) alloca (size); |
| 734 | char *ptr = buffer; |
| 735 | Lisp_Object echo_string; |
| 736 | |
| 737 | echo_string = current_kboard->echo_string; |
| 738 | |
| 739 | /* If someone has passed us a composite event, use its head symbol. */ |
| 740 | c = EVENT_HEAD (c); |
| 741 | |
| 742 | if (INTEGERP (c)) |
| 743 | { |
| 744 | ptr = push_key_description (XINT (c), ptr, 1); |
| 745 | } |
| 746 | else if (SYMBOLP (c)) |
| 747 | { |
| 748 | Lisp_Object name = SYMBOL_NAME (c); |
| 749 | int nbytes = SBYTES (name); |
| 750 | |
| 751 | if (size - (ptr - buffer) < nbytes) |
| 752 | { |
| 753 | int offset = ptr - buffer; |
| 754 | size = max (2 * size, size + nbytes); |
| 755 | buffer = (char *) alloca (size); |
| 756 | ptr = buffer + offset; |
| 757 | } |
| 758 | |
| 759 | ptr += copy_text (SDATA (name), ptr, nbytes, |
| 760 | STRING_MULTIBYTE (name), 1); |
| 761 | } |
| 762 | |
| 763 | if ((NILP (echo_string) || SCHARS (echo_string) == 0) |
| 764 | && help_char_p (c)) |
| 765 | { |
| 766 | const char *text = " (Type ? for further options)"; |
| 767 | int len = strlen (text); |
| 768 | |
| 769 | if (size - (ptr - buffer) < len) |
| 770 | { |
| 771 | int offset = ptr - buffer; |
| 772 | size += len; |
| 773 | buffer = (char *) alloca (size); |
| 774 | ptr = buffer + offset; |
| 775 | } |
| 776 | |
| 777 | bcopy (text, ptr, len); |
| 778 | ptr += len; |
| 779 | } |
| 780 | |
| 781 | /* Replace a dash from echo_dash with a space, otherwise |
| 782 | add a space at the end as a separator between keys. */ |
| 783 | if (STRINGP (echo_string) |
| 784 | && SCHARS (echo_string) > 1) |
| 785 | { |
| 786 | Lisp_Object last_char, prev_char, idx; |
| 787 | |
| 788 | idx = make_number (SCHARS (echo_string) - 2); |
| 789 | prev_char = Faref (echo_string, idx); |
| 790 | |
| 791 | idx = make_number (SCHARS (echo_string) - 1); |
| 792 | last_char = Faref (echo_string, idx); |
| 793 | |
| 794 | /* We test PREV_CHAR to make sure this isn't the echoing |
| 795 | of a minus-sign. */ |
| 796 | if (XINT (last_char) == '-' && XINT (prev_char) != ' ') |
| 797 | Faset (echo_string, idx, make_number (' ')); |
| 798 | else |
| 799 | echo_string = concat2 (echo_string, build_string (" ")); |
| 800 | } |
| 801 | else if (STRINGP (echo_string)) |
| 802 | echo_string = concat2 (echo_string, build_string (" ")); |
| 803 | |
| 804 | current_kboard->echo_string |
| 805 | = concat2 (echo_string, make_string (buffer, ptr - buffer)); |
| 806 | |
| 807 | echo_now (); |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | /* Temporarily add a dash to the end of the echo string if it's not |
| 812 | empty, so that it serves as a mini-prompt for the very next character. */ |
| 813 | |
| 814 | void |
| 815 | echo_dash () |
| 816 | { |
| 817 | /* Do nothing if not echoing at all. */ |
| 818 | if (NILP (current_kboard->echo_string)) |
| 819 | return; |
| 820 | |
| 821 | if (!current_kboard->immediate_echo |
| 822 | && SCHARS (current_kboard->echo_string) == 0) |
| 823 | return; |
| 824 | |
| 825 | /* Do nothing if we just printed a prompt. */ |
| 826 | if (current_kboard->echo_after_prompt |
| 827 | == SCHARS (current_kboard->echo_string)) |
| 828 | return; |
| 829 | |
| 830 | /* Do nothing if we have already put a dash at the end. */ |
| 831 | if (SCHARS (current_kboard->echo_string) > 1) |
| 832 | { |
| 833 | Lisp_Object last_char, prev_char, idx; |
| 834 | |
| 835 | idx = make_number (SCHARS (current_kboard->echo_string) - 2); |
| 836 | prev_char = Faref (current_kboard->echo_string, idx); |
| 837 | |
| 838 | idx = make_number (SCHARS (current_kboard->echo_string) - 1); |
| 839 | last_char = Faref (current_kboard->echo_string, idx); |
| 840 | |
| 841 | if (XINT (last_char) == '-' && XINT (prev_char) != ' ') |
| 842 | return; |
| 843 | } |
| 844 | |
| 845 | /* Put a dash at the end of the buffer temporarily, |
| 846 | but make it go away when the next character is added. */ |
| 847 | current_kboard->echo_string = concat2 (current_kboard->echo_string, |
| 848 | build_string ("-")); |
| 849 | echo_now (); |
| 850 | } |
| 851 | |
| 852 | /* Display the current echo string, and begin echoing if not already |
| 853 | doing so. */ |
| 854 | |
| 855 | void |
| 856 | echo_now () |
| 857 | { |
| 858 | if (!current_kboard->immediate_echo) |
| 859 | { |
| 860 | int i; |
| 861 | current_kboard->immediate_echo = 1; |
| 862 | |
| 863 | for (i = 0; i < this_command_key_count; i++) |
| 864 | { |
| 865 | Lisp_Object c; |
| 866 | |
| 867 | /* Set before_command_echo_length to the value that would |
| 868 | have been saved before the start of this subcommand in |
| 869 | command_loop_1, if we had already been echoing then. */ |
| 870 | if (i == this_single_command_key_start) |
| 871 | before_command_echo_length = echo_length (); |
| 872 | |
| 873 | c = XVECTOR (this_command_keys)->contents[i]; |
| 874 | if (! (EVENT_HAS_PARAMETERS (c) |
| 875 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) |
| 876 | echo_char (c); |
| 877 | } |
| 878 | |
| 879 | /* Set before_command_echo_length to the value that would |
| 880 | have been saved before the start of this subcommand in |
| 881 | command_loop_1, if we had already been echoing then. */ |
| 882 | if (this_command_key_count == this_single_command_key_start) |
| 883 | before_command_echo_length = echo_length (); |
| 884 | |
| 885 | /* Put a dash at the end to invite the user to type more. */ |
| 886 | echo_dash (); |
| 887 | } |
| 888 | |
| 889 | echoing = 1; |
| 890 | message3_nolog (current_kboard->echo_string, |
| 891 | SBYTES (current_kboard->echo_string), |
| 892 | STRING_MULTIBYTE (current_kboard->echo_string)); |
| 893 | echoing = 0; |
| 894 | |
| 895 | /* Record in what buffer we echoed, and from which kboard. */ |
| 896 | echo_message_buffer = echo_area_buffer[0]; |
| 897 | echo_kboard = current_kboard; |
| 898 | |
| 899 | if (waiting_for_input && !NILP (Vquit_flag)) |
| 900 | quit_throw_to_read_char (); |
| 901 | } |
| 902 | |
| 903 | /* Turn off echoing, for the start of a new command. */ |
| 904 | |
| 905 | void |
| 906 | cancel_echoing () |
| 907 | { |
| 908 | current_kboard->immediate_echo = 0; |
| 909 | current_kboard->echo_after_prompt = -1; |
| 910 | current_kboard->echo_string = Qnil; |
| 911 | ok_to_echo_at_next_pause = NULL; |
| 912 | echo_kboard = NULL; |
| 913 | echo_message_buffer = Qnil; |
| 914 | } |
| 915 | |
| 916 | /* Return the length of the current echo string. */ |
| 917 | |
| 918 | static int |
| 919 | echo_length () |
| 920 | { |
| 921 | return (STRINGP (current_kboard->echo_string) |
| 922 | ? SCHARS (current_kboard->echo_string) |
| 923 | : 0); |
| 924 | } |
| 925 | |
| 926 | /* Truncate the current echo message to its first LEN chars. |
| 927 | This and echo_char get used by read_key_sequence when the user |
| 928 | switches frames while entering a key sequence. */ |
| 929 | |
| 930 | static void |
| 931 | echo_truncate (nchars) |
| 932 | int nchars; |
| 933 | { |
| 934 | if (STRINGP (current_kboard->echo_string)) |
| 935 | current_kboard->echo_string |
| 936 | = Fsubstring (current_kboard->echo_string, |
| 937 | make_number (0), make_number (nchars)); |
| 938 | truncate_echo_area (nchars); |
| 939 | } |
| 940 | |
| 941 | \f |
| 942 | /* Functions for manipulating this_command_keys. */ |
| 943 | static void |
| 944 | add_command_key (key) |
| 945 | Lisp_Object key; |
| 946 | { |
| 947 | #if 0 /* Not needed after we made Freset_this_command_lengths |
| 948 | do the job immediately. */ |
| 949 | /* If reset-this-command-length was called recently, obey it now. |
| 950 | See the doc string of that function for an explanation of why. */ |
| 951 | if (before_command_restore_flag) |
| 952 | { |
| 953 | this_command_key_count = before_command_key_count_1; |
| 954 | if (this_command_key_count < this_single_command_key_start) |
| 955 | this_single_command_key_start = this_command_key_count; |
| 956 | echo_truncate (before_command_echo_length_1); |
| 957 | before_command_restore_flag = 0; |
| 958 | } |
| 959 | #endif |
| 960 | |
| 961 | if (this_command_key_count >= ASIZE (this_command_keys)) |
| 962 | this_command_keys = larger_vector (this_command_keys, |
| 963 | 2 * ASIZE (this_command_keys), |
| 964 | Qnil); |
| 965 | |
| 966 | AREF (this_command_keys, this_command_key_count) = key; |
| 967 | ++this_command_key_count; |
| 968 | } |
| 969 | |
| 970 | \f |
| 971 | Lisp_Object |
| 972 | recursive_edit_1 () |
| 973 | { |
| 974 | int count = SPECPDL_INDEX (); |
| 975 | Lisp_Object val; |
| 976 | |
| 977 | if (command_loop_level > 0) |
| 978 | { |
| 979 | specbind (Qstandard_output, Qt); |
| 980 | specbind (Qstandard_input, Qt); |
| 981 | } |
| 982 | |
| 983 | #ifdef HAVE_X_WINDOWS |
| 984 | /* The command loop has started an hourglass timer, so we have to |
| 985 | cancel it here, otherwise it will fire because the recursive edit |
| 986 | can take some time. Do not check for display_hourglass_p here, |
| 987 | because it could already be nil. */ |
| 988 | cancel_hourglass (); |
| 989 | #endif |
| 990 | |
| 991 | /* This function may have been called from a debugger called from |
| 992 | within redisplay, for instance by Edebugging a function called |
| 993 | from fontification-functions. We want to allow redisplay in |
| 994 | the debugging session. |
| 995 | |
| 996 | The recursive edit is left with a `(throw exit ...)'. The `exit' |
| 997 | tag is not caught anywhere in redisplay, i.e. when we leave the |
| 998 | recursive edit, the original redisplay leading to the recursive |
| 999 | edit will be unwound. The outcome should therefore be safe. */ |
| 1000 | specbind (Qinhibit_redisplay, Qnil); |
| 1001 | redisplaying_p = 0; |
| 1002 | |
| 1003 | val = command_loop (); |
| 1004 | if (EQ (val, Qt)) |
| 1005 | Fsignal (Qquit, Qnil); |
| 1006 | /* Handle throw from read_minibuf when using minibuffer |
| 1007 | while it's active but we're in another window. */ |
| 1008 | if (STRINGP (val)) |
| 1009 | xsignal1 (Qerror, val); |
| 1010 | |
| 1011 | return unbind_to (count, Qnil); |
| 1012 | } |
| 1013 | |
| 1014 | /* When an auto-save happens, record the "time", and don't do again soon. */ |
| 1015 | |
| 1016 | void |
| 1017 | record_auto_save () |
| 1018 | { |
| 1019 | last_auto_save = num_nonmacro_input_events; |
| 1020 | } |
| 1021 | |
| 1022 | /* Make an auto save happen as soon as possible at command level. */ |
| 1023 | |
| 1024 | void |
| 1025 | force_auto_save_soon () |
| 1026 | { |
| 1027 | last_auto_save = - auto_save_interval - 1; |
| 1028 | |
| 1029 | record_asynch_buffer_change (); |
| 1030 | } |
| 1031 | \f |
| 1032 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
| 1033 | doc: /* Invoke the editor command loop recursively. |
| 1034 | To get out of the recursive edit, a command can do `(throw 'exit nil)'; |
| 1035 | that tells this function to return. |
| 1036 | Alternatively, `(throw 'exit t)' makes this function signal an error. |
| 1037 | This function is called by the editor initialization to begin editing. */) |
| 1038 | () |
| 1039 | { |
| 1040 | int count = SPECPDL_INDEX (); |
| 1041 | Lisp_Object buffer; |
| 1042 | |
| 1043 | /* If we enter while input is blocked, don't lock up here. |
| 1044 | This may happen through the debugger during redisplay. */ |
| 1045 | if (INPUT_BLOCKED_P) |
| 1046 | return Qnil; |
| 1047 | |
| 1048 | command_loop_level++; |
| 1049 | update_mode_lines = 1; |
| 1050 | |
| 1051 | if (command_loop_level |
| 1052 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
| 1053 | buffer = Fcurrent_buffer (); |
| 1054 | else |
| 1055 | buffer = Qnil; |
| 1056 | |
| 1057 | /* If we leave recursive_edit_1 below with a `throw' for instance, |
| 1058 | like it is done in the splash screen display, we have to |
| 1059 | make sure that we restore single_kboard as command_loop_1 |
| 1060 | would have done if it were left normally. */ |
| 1061 | record_unwind_protect (recursive_edit_unwind, |
| 1062 | Fcons (buffer, single_kboard ? Qt : Qnil)); |
| 1063 | |
| 1064 | recursive_edit_1 (); |
| 1065 | return unbind_to (count, Qnil); |
| 1066 | } |
| 1067 | |
| 1068 | Lisp_Object |
| 1069 | recursive_edit_unwind (info) |
| 1070 | Lisp_Object info; |
| 1071 | { |
| 1072 | if (BUFFERP (XCAR (info))) |
| 1073 | Fset_buffer (XCAR (info)); |
| 1074 | |
| 1075 | if (NILP (XCDR (info))) |
| 1076 | any_kboard_state (); |
| 1077 | else |
| 1078 | single_kboard_state (); |
| 1079 | |
| 1080 | command_loop_level--; |
| 1081 | update_mode_lines = 1; |
| 1082 | return Qnil; |
| 1083 | } |
| 1084 | |
| 1085 | \f |
| 1086 | static void |
| 1087 | any_kboard_state () |
| 1088 | { |
| 1089 | #ifdef MULTI_KBOARD |
| 1090 | #if 0 /* Theory: if there's anything in Vunread_command_events, |
| 1091 | it will right away be read by read_key_sequence, |
| 1092 | and then if we do switch KBOARDS, it will go into the side |
| 1093 | queue then. So we don't need to do anything special here -- rms. */ |
| 1094 | if (CONSP (Vunread_command_events)) |
| 1095 | { |
| 1096 | current_kboard->kbd_queue |
| 1097 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); |
| 1098 | current_kboard->kbd_queue_has_data = 1; |
| 1099 | } |
| 1100 | Vunread_command_events = Qnil; |
| 1101 | #endif |
| 1102 | single_kboard = 0; |
| 1103 | #endif |
| 1104 | } |
| 1105 | |
| 1106 | /* Switch to the single-kboard state, making current_kboard |
| 1107 | the only KBOARD from which further input is accepted. */ |
| 1108 | |
| 1109 | void |
| 1110 | single_kboard_state () |
| 1111 | { |
| 1112 | #ifdef MULTI_KBOARD |
| 1113 | single_kboard = 1; |
| 1114 | #endif |
| 1115 | } |
| 1116 | |
| 1117 | /* If we're in single_kboard state for kboard KBOARD, |
| 1118 | get out of it. */ |
| 1119 | |
| 1120 | void |
| 1121 | not_single_kboard_state (kboard) |
| 1122 | KBOARD *kboard; |
| 1123 | { |
| 1124 | #ifdef MULTI_KBOARD |
| 1125 | if (kboard == current_kboard) |
| 1126 | single_kboard = 0; |
| 1127 | #endif |
| 1128 | } |
| 1129 | |
| 1130 | /* Maintain a stack of kboards, so other parts of Emacs |
| 1131 | can switch temporarily to the kboard of a given frame |
| 1132 | and then revert to the previous status. */ |
| 1133 | |
| 1134 | struct kboard_stack |
| 1135 | { |
| 1136 | KBOARD *kboard; |
| 1137 | struct kboard_stack *next; |
| 1138 | }; |
| 1139 | |
| 1140 | static struct kboard_stack *kboard_stack; |
| 1141 | |
| 1142 | void |
| 1143 | push_frame_kboard (f) |
| 1144 | FRAME_PTR f; |
| 1145 | { |
| 1146 | #ifdef MULTI_KBOARD |
| 1147 | struct kboard_stack *p |
| 1148 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); |
| 1149 | |
| 1150 | p->next = kboard_stack; |
| 1151 | p->kboard = current_kboard; |
| 1152 | kboard_stack = p; |
| 1153 | |
| 1154 | current_kboard = FRAME_KBOARD (f); |
| 1155 | #endif |
| 1156 | } |
| 1157 | |
| 1158 | void |
| 1159 | pop_frame_kboard () |
| 1160 | { |
| 1161 | #ifdef MULTI_KBOARD |
| 1162 | struct kboard_stack *p = kboard_stack; |
| 1163 | current_kboard = p->kboard; |
| 1164 | kboard_stack = p->next; |
| 1165 | xfree (p); |
| 1166 | #endif |
| 1167 | } |
| 1168 | \f |
| 1169 | /* Handle errors that are not handled at inner levels |
| 1170 | by printing an error message and returning to the editor command loop. */ |
| 1171 | |
| 1172 | Lisp_Object |
| 1173 | cmd_error (data) |
| 1174 | Lisp_Object data; |
| 1175 | { |
| 1176 | Lisp_Object old_level, old_length; |
| 1177 | char macroerror[50]; |
| 1178 | |
| 1179 | #ifdef HAVE_X_WINDOWS |
| 1180 | if (display_hourglass_p) |
| 1181 | cancel_hourglass (); |
| 1182 | #endif |
| 1183 | |
| 1184 | if (!NILP (executing_kbd_macro)) |
| 1185 | { |
| 1186 | if (executing_kbd_macro_iterations == 1) |
| 1187 | sprintf (macroerror, "After 1 kbd macro iteration: "); |
| 1188 | else |
| 1189 | sprintf (macroerror, "After %d kbd macro iterations: ", |
| 1190 | executing_kbd_macro_iterations); |
| 1191 | } |
| 1192 | else |
| 1193 | *macroerror = 0; |
| 1194 | |
| 1195 | Vstandard_output = Qt; |
| 1196 | Vstandard_input = Qt; |
| 1197 | Vexecuting_kbd_macro = Qnil; |
| 1198 | executing_kbd_macro = Qnil; |
| 1199 | current_kboard->Vprefix_arg = Qnil; |
| 1200 | current_kboard->Vlast_prefix_arg = Qnil; |
| 1201 | cancel_echoing (); |
| 1202 | |
| 1203 | /* Avoid unquittable loop if data contains a circular list. */ |
| 1204 | old_level = Vprint_level; |
| 1205 | old_length = Vprint_length; |
| 1206 | XSETFASTINT (Vprint_level, 10); |
| 1207 | XSETFASTINT (Vprint_length, 10); |
| 1208 | cmd_error_internal (data, macroerror); |
| 1209 | Vprint_level = old_level; |
| 1210 | Vprint_length = old_length; |
| 1211 | |
| 1212 | Vquit_flag = Qnil; |
| 1213 | |
| 1214 | Vinhibit_quit = Qnil; |
| 1215 | #ifdef MULTI_KBOARD |
| 1216 | if (command_loop_level == 0 && minibuf_level == 0) |
| 1217 | any_kboard_state (); |
| 1218 | #endif |
| 1219 | |
| 1220 | return make_number (0); |
| 1221 | } |
| 1222 | |
| 1223 | /* Take actions on handling an error. DATA is the data that describes |
| 1224 | the error. |
| 1225 | |
| 1226 | CONTEXT is a C-string containing ASCII characters only which |
| 1227 | describes the context in which the error happened. If we need to |
| 1228 | generalize CONTEXT to allow multibyte characters, make it a Lisp |
| 1229 | string. */ |
| 1230 | |
| 1231 | void |
| 1232 | cmd_error_internal (data, context) |
| 1233 | Lisp_Object data; |
| 1234 | char *context; |
| 1235 | { |
| 1236 | struct frame *sf = SELECTED_FRAME (); |
| 1237 | |
| 1238 | /* The immediate context is not interesting for Quits, |
| 1239 | since they are asyncronous. */ |
| 1240 | if (EQ (XCAR (data), Qquit)) |
| 1241 | Vsignaling_function = Qnil; |
| 1242 | |
| 1243 | Vquit_flag = Qnil; |
| 1244 | Vinhibit_quit = Qt; |
| 1245 | |
| 1246 | /* Use user's specified output function if any. */ |
| 1247 | if (!NILP (Vcommand_error_function)) |
| 1248 | call3 (Vcommand_error_function, data, |
| 1249 | build_string (context ? context : ""), |
| 1250 | Vsignaling_function); |
| 1251 | /* If the window system or terminal frame hasn't been initialized |
| 1252 | yet, or we're not interactive, write the message to stderr and exit. */ |
| 1253 | else if (!sf->glyphs_initialized_p |
| 1254 | /* This is the case of the frame dumped with Emacs, when we're |
| 1255 | running under a window system. */ |
| 1256 | || (!NILP (Vwindow_system) |
| 1257 | && !inhibit_window_system |
| 1258 | && FRAME_TERMCAP_P (sf)) |
| 1259 | || noninteractive) |
| 1260 | { |
| 1261 | print_error_message (data, Qexternal_debugging_output, |
| 1262 | context, Vsignaling_function); |
| 1263 | Fterpri (Qexternal_debugging_output); |
| 1264 | Fkill_emacs (make_number (-1)); |
| 1265 | } |
| 1266 | else |
| 1267 | { |
| 1268 | clear_message (1, 0); |
| 1269 | Fdiscard_input (); |
| 1270 | message_log_maybe_newline (); |
| 1271 | bitch_at_user (); |
| 1272 | |
| 1273 | print_error_message (data, Qt, context, Vsignaling_function); |
| 1274 | } |
| 1275 | |
| 1276 | Vsignaling_function = Qnil; |
| 1277 | } |
| 1278 | \f |
| 1279 | Lisp_Object command_loop_1 (); |
| 1280 | Lisp_Object command_loop_2 (); |
| 1281 | Lisp_Object top_level_1 (); |
| 1282 | |
| 1283 | /* Entry to editor-command-loop. |
| 1284 | This level has the catches for exiting/returning to editor command loop. |
| 1285 | It returns nil to exit recursive edit, t to abort it. */ |
| 1286 | |
| 1287 | Lisp_Object |
| 1288 | command_loop () |
| 1289 | { |
| 1290 | if (command_loop_level > 0 || minibuf_level > 0) |
| 1291 | { |
| 1292 | Lisp_Object val; |
| 1293 | val = internal_catch (Qexit, command_loop_2, Qnil); |
| 1294 | executing_kbd_macro = Qnil; |
| 1295 | return val; |
| 1296 | } |
| 1297 | else |
| 1298 | while (1) |
| 1299 | { |
| 1300 | internal_catch (Qtop_level, top_level_1, Qnil); |
| 1301 | /* Reset single_kboard in case top-level set it while |
| 1302 | evaluating an -f option, or we are stuck there for some |
| 1303 | other reason. */ |
| 1304 | any_kboard_state (); |
| 1305 | internal_catch (Qtop_level, command_loop_2, Qnil); |
| 1306 | executing_kbd_macro = Qnil; |
| 1307 | |
| 1308 | /* End of file in -batch run causes exit here. */ |
| 1309 | if (noninteractive) |
| 1310 | Fkill_emacs (Qt); |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | /* Here we catch errors in execution of commands within the |
| 1315 | editing loop, and reenter the editing loop. |
| 1316 | When there is an error, cmd_error runs and returns a non-nil |
| 1317 | value to us. A value of nil means that command_loop_1 itself |
| 1318 | returned due to end of file (or end of kbd macro). */ |
| 1319 | |
| 1320 | Lisp_Object |
| 1321 | command_loop_2 () |
| 1322 | { |
| 1323 | register Lisp_Object val; |
| 1324 | |
| 1325 | do |
| 1326 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); |
| 1327 | while (!NILP (val)); |
| 1328 | |
| 1329 | return Qnil; |
| 1330 | } |
| 1331 | |
| 1332 | Lisp_Object |
| 1333 | top_level_2 () |
| 1334 | { |
| 1335 | return Feval (Vtop_level); |
| 1336 | } |
| 1337 | |
| 1338 | Lisp_Object |
| 1339 | top_level_1 () |
| 1340 | { |
| 1341 | /* On entry to the outer level, run the startup file */ |
| 1342 | if (!NILP (Vtop_level)) |
| 1343 | internal_condition_case (top_level_2, Qerror, cmd_error); |
| 1344 | else if (!NILP (Vpurify_flag)) |
| 1345 | message ("Bare impure Emacs (standard Lisp code not loaded)"); |
| 1346 | else |
| 1347 | message ("Bare Emacs (standard Lisp code not loaded)"); |
| 1348 | return Qnil; |
| 1349 | } |
| 1350 | |
| 1351 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", |
| 1352 | doc: /* Exit all recursive editing levels. */) |
| 1353 | () |
| 1354 | { |
| 1355 | #ifdef HAVE_X_WINDOWS |
| 1356 | if (display_hourglass_p) |
| 1357 | cancel_hourglass (); |
| 1358 | #endif |
| 1359 | |
| 1360 | /* Unblock input if we enter with input blocked. This may happen if |
| 1361 | redisplay traps e.g. during tool-bar update with input blocked. */ |
| 1362 | while (INPUT_BLOCKED_P) |
| 1363 | UNBLOCK_INPUT; |
| 1364 | |
| 1365 | return Fthrow (Qtop_level, Qnil); |
| 1366 | } |
| 1367 | |
| 1368 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", |
| 1369 | doc: /* Exit from the innermost recursive edit or minibuffer. */) |
| 1370 | () |
| 1371 | { |
| 1372 | if (command_loop_level > 0 || minibuf_level > 0) |
| 1373 | Fthrow (Qexit, Qnil); |
| 1374 | |
| 1375 | error ("No recursive edit is in progress"); |
| 1376 | return Qnil; |
| 1377 | } |
| 1378 | |
| 1379 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", |
| 1380 | doc: /* Abort the command that requested this recursive edit or minibuffer input. */) |
| 1381 | () |
| 1382 | { |
| 1383 | if (command_loop_level > 0 || minibuf_level > 0) |
| 1384 | Fthrow (Qexit, Qt); |
| 1385 | |
| 1386 | error ("No recursive edit is in progress"); |
| 1387 | return Qnil; |
| 1388 | } |
| 1389 | \f |
| 1390 | /* This is the actual command reading loop, |
| 1391 | sans error-handling encapsulation. */ |
| 1392 | |
| 1393 | static int read_key_sequence P_ ((Lisp_Object *, int, Lisp_Object, |
| 1394 | int, int, int)); |
| 1395 | void safe_run_hooks P_ ((Lisp_Object)); |
| 1396 | static void adjust_point_for_property P_ ((int, int)); |
| 1397 | |
| 1398 | /* Cancel hourglass from protect_unwind. |
| 1399 | ARG is not used. */ |
| 1400 | #ifdef HAVE_X_WINDOWS |
| 1401 | static Lisp_Object |
| 1402 | cancel_hourglass_unwind (arg) |
| 1403 | Lisp_Object arg; |
| 1404 | { |
| 1405 | cancel_hourglass (); |
| 1406 | return Qnil; |
| 1407 | } |
| 1408 | #endif |
| 1409 | |
| 1410 | Lisp_Object |
| 1411 | command_loop_1 () |
| 1412 | { |
| 1413 | Lisp_Object cmd; |
| 1414 | int lose; |
| 1415 | int nonundocount; |
| 1416 | Lisp_Object keybuf[30]; |
| 1417 | int i; |
| 1418 | int no_direct; |
| 1419 | int prev_modiff = 0; |
| 1420 | struct buffer *prev_buffer = NULL; |
| 1421 | #ifdef MULTI_KBOARD |
| 1422 | int was_locked = single_kboard; |
| 1423 | #endif |
| 1424 | int already_adjusted; |
| 1425 | |
| 1426 | current_kboard->Vprefix_arg = Qnil; |
| 1427 | current_kboard->Vlast_prefix_arg = Qnil; |
| 1428 | Vdeactivate_mark = Qnil; |
| 1429 | waiting_for_input = 0; |
| 1430 | cancel_echoing (); |
| 1431 | |
| 1432 | nonundocount = 0; |
| 1433 | this_command_key_count = 0; |
| 1434 | this_command_key_count_reset = 0; |
| 1435 | this_single_command_key_start = 0; |
| 1436 | |
| 1437 | if (NILP (Vmemory_full)) |
| 1438 | { |
| 1439 | /* Make sure this hook runs after commands that get errors and |
| 1440 | throw to top level. */ |
| 1441 | /* Note that the value cell will never directly contain nil |
| 1442 | if the symbol is a local variable. */ |
| 1443 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) |
| 1444 | safe_run_hooks (Qpost_command_hook); |
| 1445 | |
| 1446 | /* If displaying a message, resize the echo area window to fit |
| 1447 | that message's size exactly. */ |
| 1448 | if (!NILP (echo_area_buffer[0])) |
| 1449 | resize_echo_area_exactly (); |
| 1450 | |
| 1451 | if (!NILP (Vdeferred_action_list)) |
| 1452 | safe_run_hooks (Qdeferred_action_function); |
| 1453 | } |
| 1454 | |
| 1455 | /* Do this after running Vpost_command_hook, for consistency. */ |
| 1456 | current_kboard->Vlast_command = Vthis_command; |
| 1457 | current_kboard->Vreal_last_command = real_this_command; |
| 1458 | |
| 1459 | while (1) |
| 1460 | { |
| 1461 | if (! FRAME_LIVE_P (XFRAME (selected_frame))) |
| 1462 | Fkill_emacs (Qnil); |
| 1463 | |
| 1464 | /* Make sure the current window's buffer is selected. */ |
| 1465 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
| 1466 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); |
| 1467 | |
| 1468 | /* Display any malloc warning that just came out. Use while because |
| 1469 | displaying one warning can cause another. */ |
| 1470 | |
| 1471 | while (pending_malloc_warning) |
| 1472 | display_malloc_warning (); |
| 1473 | |
| 1474 | no_direct = 0; |
| 1475 | |
| 1476 | Vdeactivate_mark = Qnil; |
| 1477 | |
| 1478 | /* If minibuffer on and echo area in use, |
| 1479 | wait a short time and redraw minibuffer. */ |
| 1480 | |
| 1481 | if (minibuf_level |
| 1482 | && !NILP (echo_area_buffer[0]) |
| 1483 | && EQ (minibuf_window, echo_area_window) |
| 1484 | && NUMBERP (Vminibuffer_message_timeout)) |
| 1485 | { |
| 1486 | /* Bind inhibit-quit to t so that C-g gets read in |
| 1487 | rather than quitting back to the minibuffer. */ |
| 1488 | int count = SPECPDL_INDEX (); |
| 1489 | specbind (Qinhibit_quit, Qt); |
| 1490 | |
| 1491 | sit_for (Vminibuffer_message_timeout, 0, 2); |
| 1492 | |
| 1493 | /* Clear the echo area. */ |
| 1494 | message2 (0, 0, 0); |
| 1495 | safe_run_hooks (Qecho_area_clear_hook); |
| 1496 | |
| 1497 | unbind_to (count, Qnil); |
| 1498 | |
| 1499 | /* If a C-g came in before, treat it as input now. */ |
| 1500 | if (!NILP (Vquit_flag)) |
| 1501 | { |
| 1502 | Vquit_flag = Qnil; |
| 1503 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
| 1504 | } |
| 1505 | } |
| 1506 | |
| 1507 | #ifdef C_ALLOCA |
| 1508 | alloca (0); /* Cause a garbage collection now */ |
| 1509 | /* Since we can free the most stuff here. */ |
| 1510 | #endif /* C_ALLOCA */ |
| 1511 | |
| 1512 | #if 0 |
| 1513 | /* Select the frame that the last event came from. Usually, |
| 1514 | switch-frame events will take care of this, but if some lisp |
| 1515 | code swallows a switch-frame event, we'll fix things up here. |
| 1516 | Is this a good idea? */ |
| 1517 | if (FRAMEP (internal_last_event_frame) |
| 1518 | && !EQ (internal_last_event_frame, selected_frame)) |
| 1519 | Fselect_frame (internal_last_event_frame); |
| 1520 | #endif |
| 1521 | /* If it has changed current-menubar from previous value, |
| 1522 | really recompute the menubar from the value. */ |
| 1523 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
| 1524 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) |
| 1525 | call0 (Qrecompute_lucid_menubar); |
| 1526 | |
| 1527 | before_command_key_count = this_command_key_count; |
| 1528 | before_command_echo_length = echo_length (); |
| 1529 | |
| 1530 | Vthis_command = Qnil; |
| 1531 | real_this_command = Qnil; |
| 1532 | Vthis_original_command = Qnil; |
| 1533 | |
| 1534 | /* Read next key sequence; i gets its length. */ |
| 1535 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
| 1536 | Qnil, 0, 1, 1); |
| 1537 | |
| 1538 | /* A filter may have run while we were reading the input. */ |
| 1539 | if (! FRAME_LIVE_P (XFRAME (selected_frame))) |
| 1540 | Fkill_emacs (Qnil); |
| 1541 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
| 1542 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); |
| 1543 | |
| 1544 | ++num_input_keys; |
| 1545 | |
| 1546 | /* Now we have read a key sequence of length I, |
| 1547 | or else I is 0 and we found end of file. */ |
| 1548 | |
| 1549 | if (i == 0) /* End of file -- happens only in */ |
| 1550 | return Qnil; /* a kbd macro, at the end. */ |
| 1551 | /* -1 means read_key_sequence got a menu that was rejected. |
| 1552 | Just loop around and read another command. */ |
| 1553 | if (i == -1) |
| 1554 | { |
| 1555 | cancel_echoing (); |
| 1556 | this_command_key_count = 0; |
| 1557 | this_command_key_count_reset = 0; |
| 1558 | this_single_command_key_start = 0; |
| 1559 | goto finalize; |
| 1560 | } |
| 1561 | |
| 1562 | last_command_char = keybuf[i - 1]; |
| 1563 | |
| 1564 | /* If the previous command tried to force a specific window-start, |
| 1565 | forget about that, in case this command moves point far away |
| 1566 | from that position. But also throw away beg_unchanged and |
| 1567 | end_unchanged information in that case, so that redisplay will |
| 1568 | update the whole window properly. */ |
| 1569 | if (!NILP (XWINDOW (selected_window)->force_start)) |
| 1570 | { |
| 1571 | struct buffer *b; |
| 1572 | XWINDOW (selected_window)->force_start = Qnil; |
| 1573 | b = XBUFFER (XWINDOW (selected_window)->buffer); |
| 1574 | BUF_BEG_UNCHANGED (b) = BUF_END_UNCHANGED (b) = 0; |
| 1575 | } |
| 1576 | |
| 1577 | cmd = read_key_sequence_cmd; |
| 1578 | if (!NILP (Vexecuting_kbd_macro)) |
| 1579 | { |
| 1580 | if (!NILP (Vquit_flag)) |
| 1581 | { |
| 1582 | Vexecuting_kbd_macro = Qt; |
| 1583 | QUIT; /* Make some noise. */ |
| 1584 | /* Will return since macro now empty. */ |
| 1585 | } |
| 1586 | } |
| 1587 | |
| 1588 | /* Do redisplay processing after this command except in special |
| 1589 | cases identified below. */ |
| 1590 | prev_buffer = current_buffer; |
| 1591 | prev_modiff = MODIFF; |
| 1592 | last_point_position = PT; |
| 1593 | last_point_position_window = selected_window; |
| 1594 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
| 1595 | |
| 1596 | /* By default, we adjust point to a boundary of a region that |
| 1597 | has such a property that should be treated intangible |
| 1598 | (e.g. composition, display). But, some commands will set |
| 1599 | this variable differently. */ |
| 1600 | Vdisable_point_adjustment = Qnil; |
| 1601 | |
| 1602 | /* Process filters and timers may have messed with deactivate-mark. |
| 1603 | reset it before we execute the command. */ |
| 1604 | Vdeactivate_mark = Qnil; |
| 1605 | |
| 1606 | /* Remap command through active keymaps */ |
| 1607 | Vthis_original_command = cmd; |
| 1608 | if (SYMBOLP (cmd)) |
| 1609 | { |
| 1610 | Lisp_Object cmd1; |
| 1611 | if (cmd1 = Fcommand_remapping (cmd), !NILP (cmd1)) |
| 1612 | cmd = cmd1; |
| 1613 | } |
| 1614 | |
| 1615 | /* Execute the command. */ |
| 1616 | |
| 1617 | Vthis_command = cmd; |
| 1618 | real_this_command = cmd; |
| 1619 | /* Note that the value cell will never directly contain nil |
| 1620 | if the symbol is a local variable. */ |
| 1621 | if (!NILP (Vpre_command_hook) && !NILP (Vrun_hooks)) |
| 1622 | safe_run_hooks (Qpre_command_hook); |
| 1623 | |
| 1624 | already_adjusted = 0; |
| 1625 | |
| 1626 | if (NILP (Vthis_command)) |
| 1627 | { |
| 1628 | /* nil means key is undefined. */ |
| 1629 | Lisp_Object keys = Fvector (i, keybuf); |
| 1630 | keys = Fkey_description (keys, Qnil); |
| 1631 | bitch_at_user (); |
| 1632 | message_with_string ("%s is undefined", keys, 0); |
| 1633 | current_kboard->defining_kbd_macro = Qnil; |
| 1634 | update_mode_lines = 1; |
| 1635 | current_kboard->Vprefix_arg = Qnil; |
| 1636 | } |
| 1637 | else |
| 1638 | { |
| 1639 | if (NILP (current_kboard->Vprefix_arg) && ! no_direct) |
| 1640 | { |
| 1641 | /* In case we jump to directly_done. */ |
| 1642 | Vcurrent_prefix_arg = current_kboard->Vprefix_arg; |
| 1643 | |
| 1644 | /* Recognize some common commands in common situations and |
| 1645 | do them directly. */ |
| 1646 | if (EQ (Vthis_command, Qforward_char) && PT < ZV) |
| 1647 | { |
| 1648 | struct Lisp_Char_Table *dp |
| 1649 | = window_display_table (XWINDOW (selected_window)); |
| 1650 | lose = FETCH_CHAR (PT_BYTE); |
| 1651 | SET_PT (PT + 1); |
| 1652 | if (! NILP (Vpost_command_hook)) |
| 1653 | /* Put this before calling adjust_point_for_property |
| 1654 | so it will only get called once in any case. */ |
| 1655 | goto directly_done; |
| 1656 | if (current_buffer == prev_buffer |
| 1657 | && last_point_position != PT |
| 1658 | && NILP (Vdisable_point_adjustment) |
| 1659 | && NILP (Vglobal_disable_point_adjustment)) |
| 1660 | adjust_point_for_property (last_point_position, 0); |
| 1661 | already_adjusted = 1; |
| 1662 | if (PT == last_point_position + 1 |
| 1663 | && (dp |
| 1664 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
| 1665 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
| 1666 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) |
| 1667 | && (lose >= 0x20 && lose < 0x7f))) |
| 1668 | : (lose >= 0x20 && lose < 0x7f)) |
| 1669 | /* To extract the case of continuation on |
| 1670 | wide-column characters. */ |
| 1671 | && (WIDTH_BY_CHAR_HEAD (FETCH_BYTE (PT_BYTE)) == 1) |
| 1672 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
| 1673 | >= MODIFF) |
| 1674 | && (XFASTINT (XWINDOW (selected_window)->last_overlay_modified) |
| 1675 | >= OVERLAY_MODIFF) |
| 1676 | && (XFASTINT (XWINDOW (selected_window)->last_point) |
| 1677 | == PT - 1) |
| 1678 | && !windows_or_buffers_changed |
| 1679 | && EQ (current_buffer->selective_display, Qnil) |
| 1680 | && !detect_input_pending () |
| 1681 | && NILP (XWINDOW (selected_window)->column_number_displayed) |
| 1682 | && NILP (Vexecuting_kbd_macro)) |
| 1683 | direct_output_forward_char (1); |
| 1684 | goto directly_done; |
| 1685 | } |
| 1686 | else if (EQ (Vthis_command, Qbackward_char) && PT > BEGV) |
| 1687 | { |
| 1688 | struct Lisp_Char_Table *dp |
| 1689 | = window_display_table (XWINDOW (selected_window)); |
| 1690 | SET_PT (PT - 1); |
| 1691 | lose = FETCH_CHAR (PT_BYTE); |
| 1692 | if (! NILP (Vpost_command_hook)) |
| 1693 | goto directly_done; |
| 1694 | if (current_buffer == prev_buffer |
| 1695 | && last_point_position != PT |
| 1696 | && NILP (Vdisable_point_adjustment) |
| 1697 | && NILP (Vglobal_disable_point_adjustment)) |
| 1698 | adjust_point_for_property (last_point_position, 0); |
| 1699 | already_adjusted = 1; |
| 1700 | if (PT == last_point_position - 1 |
| 1701 | && (dp |
| 1702 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
| 1703 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
| 1704 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) |
| 1705 | && (lose >= 0x20 && lose < 0x7f))) |
| 1706 | : (lose >= 0x20 && lose < 0x7f)) |
| 1707 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
| 1708 | >= MODIFF) |
| 1709 | && (XFASTINT (XWINDOW (selected_window)->last_overlay_modified) |
| 1710 | >= OVERLAY_MODIFF) |
| 1711 | && (XFASTINT (XWINDOW (selected_window)->last_point) |
| 1712 | == PT + 1) |
| 1713 | && !windows_or_buffers_changed |
| 1714 | && EQ (current_buffer->selective_display, Qnil) |
| 1715 | && !detect_input_pending () |
| 1716 | && NILP (XWINDOW (selected_window)->column_number_displayed) |
| 1717 | && NILP (Vexecuting_kbd_macro)) |
| 1718 | direct_output_forward_char (-1); |
| 1719 | goto directly_done; |
| 1720 | } |
| 1721 | else if (EQ (Vthis_command, Qself_insert_command) |
| 1722 | /* Try this optimization only on char keystrokes. */ |
| 1723 | && NATNUMP (last_command_char) |
| 1724 | && CHAR_VALID_P (XFASTINT (last_command_char), 0)) |
| 1725 | { |
| 1726 | unsigned int c |
| 1727 | = translate_char (Vtranslation_table_for_input, |
| 1728 | XFASTINT (last_command_char), 0, 0, 0); |
| 1729 | int value; |
| 1730 | if (NILP (Vexecuting_kbd_macro) |
| 1731 | && !EQ (minibuf_window, selected_window)) |
| 1732 | { |
| 1733 | if (!nonundocount || nonundocount >= 20) |
| 1734 | { |
| 1735 | Fundo_boundary (); |
| 1736 | nonundocount = 0; |
| 1737 | } |
| 1738 | nonundocount++; |
| 1739 | } |
| 1740 | |
| 1741 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
| 1742 | < MODIFF) |
| 1743 | || (XFASTINT (XWINDOW (selected_window)->last_overlay_modified) |
| 1744 | < OVERLAY_MODIFF) |
| 1745 | || (XFASTINT (XWINDOW (selected_window)->last_point) |
| 1746 | != PT) |
| 1747 | || MODIFF <= SAVE_MODIFF |
| 1748 | || windows_or_buffers_changed |
| 1749 | || !EQ (current_buffer->selective_display, Qnil) |
| 1750 | || detect_input_pending () |
| 1751 | || !NILP (XWINDOW (selected_window)->column_number_displayed) |
| 1752 | || !NILP (Vexecuting_kbd_macro)); |
| 1753 | |
| 1754 | value = internal_self_insert (c, 0); |
| 1755 | |
| 1756 | if (value == 2) |
| 1757 | nonundocount = 0; |
| 1758 | |
| 1759 | if (! NILP (Vpost_command_hook)) |
| 1760 | /* Put this before calling adjust_point_for_property |
| 1761 | so it will only get called once in any case. */ |
| 1762 | goto directly_done; |
| 1763 | |
| 1764 | /* VALUE == 1 when AFTER-CHANGE functions are |
| 1765 | installed which is the case most of the time |
| 1766 | because FONT-LOCK installs one. */ |
| 1767 | if (!lose && !value) |
| 1768 | direct_output_for_insert (c); |
| 1769 | goto directly_done; |
| 1770 | } |
| 1771 | } |
| 1772 | |
| 1773 | /* Here for a command that isn't executed directly */ |
| 1774 | |
| 1775 | { |
| 1776 | #ifdef HAVE_X_WINDOWS |
| 1777 | int scount = SPECPDL_INDEX (); |
| 1778 | |
| 1779 | if (display_hourglass_p |
| 1780 | && NILP (Vexecuting_kbd_macro)) |
| 1781 | { |
| 1782 | record_unwind_protect (cancel_hourglass_unwind, Qnil); |
| 1783 | start_hourglass (); |
| 1784 | } |
| 1785 | #endif |
| 1786 | |
| 1787 | nonundocount = 0; |
| 1788 | if (NILP (current_kboard->Vprefix_arg)) |
| 1789 | Fundo_boundary (); |
| 1790 | Fcommand_execute (Vthis_command, Qnil, Qnil, Qnil); |
| 1791 | |
| 1792 | #ifdef HAVE_X_WINDOWS |
| 1793 | /* Do not check display_hourglass_p here, because |
| 1794 | Fcommand_execute could change it, but we should cancel |
| 1795 | hourglass cursor anyway. |
| 1796 | But don't cancel the hourglass within a macro |
| 1797 | just because a command in the macro finishes. */ |
| 1798 | if (NILP (Vexecuting_kbd_macro)) |
| 1799 | unbind_to (scount, Qnil); |
| 1800 | #endif |
| 1801 | } |
| 1802 | } |
| 1803 | directly_done: ; |
| 1804 | current_kboard->Vlast_prefix_arg = Vcurrent_prefix_arg; |
| 1805 | |
| 1806 | /* Note that the value cell will never directly contain nil |
| 1807 | if the symbol is a local variable. */ |
| 1808 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) |
| 1809 | safe_run_hooks (Qpost_command_hook); |
| 1810 | |
| 1811 | /* If displaying a message, resize the echo area window to fit |
| 1812 | that message's size exactly. */ |
| 1813 | if (!NILP (echo_area_buffer[0])) |
| 1814 | resize_echo_area_exactly (); |
| 1815 | |
| 1816 | if (!NILP (Vdeferred_action_list)) |
| 1817 | safe_run_hooks (Qdeferred_action_function); |
| 1818 | |
| 1819 | /* If there is a prefix argument, |
| 1820 | 1) We don't want Vlast_command to be ``universal-argument'' |
| 1821 | (that would be dumb), so don't set Vlast_command, |
| 1822 | 2) we want to leave echoing on so that the prefix will be |
| 1823 | echoed as part of this key sequence, so don't call |
| 1824 | cancel_echoing, and |
| 1825 | 3) we want to leave this_command_key_count non-zero, so that |
| 1826 | read_char will realize that it is re-reading a character, and |
| 1827 | not echo it a second time. |
| 1828 | |
| 1829 | If the command didn't actually create a prefix arg, |
| 1830 | but is merely a frame event that is transparent to prefix args, |
| 1831 | then the above doesn't apply. */ |
| 1832 | if (NILP (current_kboard->Vprefix_arg) || CONSP (last_command_char)) |
| 1833 | { |
| 1834 | current_kboard->Vlast_command = Vthis_command; |
| 1835 | current_kboard->Vreal_last_command = real_this_command; |
| 1836 | cancel_echoing (); |
| 1837 | this_command_key_count = 0; |
| 1838 | this_command_key_count_reset = 0; |
| 1839 | this_single_command_key_start = 0; |
| 1840 | } |
| 1841 | |
| 1842 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
| 1843 | { |
| 1844 | /* Setting transient-mark-mode to `only' is a way of |
| 1845 | turning it on for just one command. */ |
| 1846 | |
| 1847 | if (EQ (Vtransient_mark_mode, Qidentity)) |
| 1848 | Vtransient_mark_mode = Qnil; |
| 1849 | if (EQ (Vtransient_mark_mode, Qonly)) |
| 1850 | Vtransient_mark_mode = Qidentity; |
| 1851 | |
| 1852 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) |
| 1853 | { |
| 1854 | /* We could also call `deactivate'mark'. */ |
| 1855 | if (EQ (Vtransient_mark_mode, Qlambda)) |
| 1856 | Vtransient_mark_mode = Qnil; |
| 1857 | else |
| 1858 | { |
| 1859 | current_buffer->mark_active = Qnil; |
| 1860 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); |
| 1861 | } |
| 1862 | } |
| 1863 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) |
| 1864 | call1 (Vrun_hooks, intern ("activate-mark-hook")); |
| 1865 | } |
| 1866 | |
| 1867 | finalize: |
| 1868 | |
| 1869 | if (current_buffer == prev_buffer |
| 1870 | && last_point_position != PT |
| 1871 | && NILP (Vdisable_point_adjustment) |
| 1872 | && NILP (Vglobal_disable_point_adjustment) |
| 1873 | && !already_adjusted) |
| 1874 | adjust_point_for_property (last_point_position, MODIFF != prev_modiff); |
| 1875 | |
| 1876 | /* Install chars successfully executed in kbd macro. */ |
| 1877 | |
| 1878 | if (!NILP (current_kboard->defining_kbd_macro) |
| 1879 | && NILP (current_kboard->Vprefix_arg)) |
| 1880 | finalize_kbd_macro_chars (); |
| 1881 | |
| 1882 | #ifdef MULTI_KBOARD |
| 1883 | if (!was_locked) |
| 1884 | any_kboard_state (); |
| 1885 | #endif |
| 1886 | } |
| 1887 | } |
| 1888 | |
| 1889 | extern Lisp_Object Qcomposition, Qdisplay; |
| 1890 | |
| 1891 | /* Adjust point to a boundary of a region that has such a property |
| 1892 | that should be treated intangible. For the moment, we check |
| 1893 | `composition', `display' and `invisible' properties. |
| 1894 | LAST_PT is the last position of point. */ |
| 1895 | |
| 1896 | extern Lisp_Object Qafter_string, Qbefore_string; |
| 1897 | extern Lisp_Object get_pos_property P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
| 1898 | |
| 1899 | static void |
| 1900 | adjust_point_for_property (last_pt, modified) |
| 1901 | int last_pt; |
| 1902 | int modified; |
| 1903 | { |
| 1904 | int beg, end; |
| 1905 | Lisp_Object val, overlay, tmp; |
| 1906 | int check_composition = 1, check_display = 1, check_invisible = 1; |
| 1907 | int orig_pt = PT; |
| 1908 | |
| 1909 | /* FIXME: cycling is probably not necessary because these properties |
| 1910 | can't be usefully combined anyway. */ |
| 1911 | while (check_composition || check_display || check_invisible) |
| 1912 | { |
| 1913 | if (check_composition |
| 1914 | && PT > BEGV && PT < ZV |
| 1915 | && get_property_and_range (PT, Qcomposition, &val, &beg, &end, Qnil) |
| 1916 | && COMPOSITION_VALID_P (beg, end, val) |
| 1917 | && beg < PT /* && end > PT <- It's always the case. */ |
| 1918 | && (last_pt <= beg || last_pt >= end)) |
| 1919 | { |
| 1920 | xassert (end > PT); |
| 1921 | SET_PT (PT < last_pt ? beg : end); |
| 1922 | check_display = check_invisible = 1; |
| 1923 | } |
| 1924 | check_composition = 0; |
| 1925 | if (check_display |
| 1926 | && PT > BEGV && PT < ZV |
| 1927 | && !NILP (val = get_char_property_and_overlay |
| 1928 | (make_number (PT), Qdisplay, Qnil, &overlay)) |
| 1929 | && display_prop_intangible_p (val) |
| 1930 | && (!OVERLAYP (overlay) |
| 1931 | ? get_property_and_range (PT, Qdisplay, &val, &beg, &end, Qnil) |
| 1932 | : (beg = OVERLAY_POSITION (OVERLAY_START (overlay)), |
| 1933 | end = OVERLAY_POSITION (OVERLAY_END (overlay)))) |
| 1934 | && (beg < PT /* && end > PT <- It's always the case. */ |
| 1935 | || (beg <= PT && STRINGP (val) && SCHARS (val) == 0))) |
| 1936 | { |
| 1937 | xassert (end > PT); |
| 1938 | SET_PT (PT < last_pt |
| 1939 | ? (STRINGP (val) && SCHARS (val) == 0 ? beg - 1 : beg) |
| 1940 | : end); |
| 1941 | check_composition = check_invisible = 1; |
| 1942 | } |
| 1943 | check_display = 0; |
| 1944 | if (check_invisible && PT > BEGV && PT < ZV) |
| 1945 | { |
| 1946 | int inv, ellipsis = 0; |
| 1947 | beg = end = PT; |
| 1948 | |
| 1949 | /* Find boundaries `beg' and `end' of the invisible area, if any. */ |
| 1950 | while (end < ZV |
| 1951 | && !NILP (val = get_char_property_and_overlay |
| 1952 | (make_number (end), Qinvisible, Qnil, &overlay)) |
| 1953 | && (inv = TEXT_PROP_MEANS_INVISIBLE (val))) |
| 1954 | { |
| 1955 | ellipsis = ellipsis || inv > 1 |
| 1956 | || (OVERLAYP (overlay) |
| 1957 | && (!NILP (Foverlay_get (overlay, Qafter_string)) |
| 1958 | || !NILP (Foverlay_get (overlay, Qbefore_string)))); |
| 1959 | tmp = Fnext_single_char_property_change |
| 1960 | (make_number (end), Qinvisible, Qnil, Qnil); |
| 1961 | end = NATNUMP (tmp) ? XFASTINT (tmp) : ZV; |
| 1962 | } |
| 1963 | while (beg > BEGV |
| 1964 | && !NILP (val = get_char_property_and_overlay |
| 1965 | (make_number (beg - 1), Qinvisible, Qnil, &overlay)) |
| 1966 | && (inv = TEXT_PROP_MEANS_INVISIBLE (val))) |
| 1967 | { |
| 1968 | ellipsis = ellipsis || inv > 1 |
| 1969 | || (OVERLAYP (overlay) |
| 1970 | && (!NILP (Foverlay_get (overlay, Qafter_string)) |
| 1971 | || !NILP (Foverlay_get (overlay, Qbefore_string)))); |
| 1972 | tmp = Fprevious_single_char_property_change |
| 1973 | (make_number (beg), Qinvisible, Qnil, Qnil); |
| 1974 | beg = NATNUMP (tmp) ? XFASTINT (tmp) : BEGV; |
| 1975 | } |
| 1976 | |
| 1977 | /* Move away from the inside area. */ |
| 1978 | if (beg < PT && end > PT) |
| 1979 | { |
| 1980 | SET_PT ((orig_pt == PT && (last_pt < beg || last_pt > end)) |
| 1981 | /* We haven't moved yet (so we don't need to fear |
| 1982 | infinite-looping) and we were outside the range |
| 1983 | before (so either end of the range still corresponds |
| 1984 | to a move in the right direction): pretend we moved |
| 1985 | less than we actually did, so that we still have |
| 1986 | more freedom below in choosing which end of the range |
| 1987 | to go to. */ |
| 1988 | ? (orig_pt = -1, PT < last_pt ? end : beg) |
| 1989 | /* We either have moved already or the last point |
| 1990 | was already in the range: we don't get to choose |
| 1991 | which end of the range we have to go to. */ |
| 1992 | : (PT < last_pt ? beg : end)); |
| 1993 | check_composition = check_display = 1; |
| 1994 | } |
| 1995 | #if 0 /* This assertion isn't correct, because SET_PT may end up setting |
| 1996 | the point to something other than its argument, due to |
| 1997 | point-motion hooks, intangibility, etc. */ |
| 1998 | xassert (PT == beg || PT == end); |
| 1999 | #endif |
| 2000 | |
| 2001 | /* Pretend the area doesn't exist if the buffer is not |
| 2002 | modified. */ |
| 2003 | if (!modified && !ellipsis && beg < end) |
| 2004 | { |
| 2005 | if (last_pt == beg && PT == end && end < ZV) |
| 2006 | (check_composition = check_display = 1, SET_PT (end + 1)); |
| 2007 | else if (last_pt == end && PT == beg && beg > BEGV) |
| 2008 | (check_composition = check_display = 1, SET_PT (beg - 1)); |
| 2009 | else if (PT == ((PT < last_pt) ? beg : end)) |
| 2010 | /* We've already moved as far as we can. Trying to go |
| 2011 | to the other end would mean moving backwards and thus |
| 2012 | could lead to an infinite loop. */ |
| 2013 | ; |
| 2014 | else if (val = get_pos_property (make_number (PT), |
| 2015 | Qinvisible, Qnil), |
| 2016 | TEXT_PROP_MEANS_INVISIBLE (val) |
| 2017 | && (val = get_pos_property |
| 2018 | (make_number (PT == beg ? end : beg), |
| 2019 | Qinvisible, Qnil), |
| 2020 | !TEXT_PROP_MEANS_INVISIBLE (val))) |
| 2021 | (check_composition = check_display = 1, |
| 2022 | SET_PT (PT == beg ? end : beg)); |
| 2023 | } |
| 2024 | } |
| 2025 | check_invisible = 0; |
| 2026 | } |
| 2027 | } |
| 2028 | |
| 2029 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
| 2030 | |
| 2031 | static Lisp_Object |
| 2032 | safe_run_hooks_1 (hook) |
| 2033 | Lisp_Object hook; |
| 2034 | { |
| 2035 | if (NILP (Vrun_hooks)) |
| 2036 | return Qnil; |
| 2037 | return call1 (Vrun_hooks, Vinhibit_quit); |
| 2038 | } |
| 2039 | |
| 2040 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ |
| 2041 | |
| 2042 | static Lisp_Object |
| 2043 | safe_run_hooks_error (data) |
| 2044 | Lisp_Object data; |
| 2045 | { |
| 2046 | Lisp_Object args[3]; |
| 2047 | args[0] = build_string ("Error in %s: %s"); |
| 2048 | args[1] = Vinhibit_quit; |
| 2049 | args[2] = data; |
| 2050 | Fmessage (3, args); |
| 2051 | return Fset (Vinhibit_quit, Qnil); |
| 2052 | } |
| 2053 | |
| 2054 | /* If we get an error while running the hook, cause the hook variable |
| 2055 | to be nil. Also inhibit quits, so that C-g won't cause the hook |
| 2056 | to mysteriously evaporate. */ |
| 2057 | |
| 2058 | void |
| 2059 | safe_run_hooks (hook) |
| 2060 | Lisp_Object hook; |
| 2061 | { |
| 2062 | int count = SPECPDL_INDEX (); |
| 2063 | specbind (Qinhibit_quit, hook); |
| 2064 | |
| 2065 | internal_condition_case (safe_run_hooks_1, Qt, safe_run_hooks_error); |
| 2066 | |
| 2067 | unbind_to (count, Qnil); |
| 2068 | } |
| 2069 | |
| 2070 | \f |
| 2071 | /* Number of seconds between polling for input. This is a Lisp |
| 2072 | variable that can be bound. */ |
| 2073 | |
| 2074 | EMACS_INT polling_period; |
| 2075 | |
| 2076 | /* Nonzero means polling for input is temporarily suppressed. */ |
| 2077 | |
| 2078 | int poll_suppress_count; |
| 2079 | |
| 2080 | /* Asynchronous timer for polling. */ |
| 2081 | |
| 2082 | struct atimer *poll_timer; |
| 2083 | |
| 2084 | |
| 2085 | #ifdef POLL_FOR_INPUT |
| 2086 | |
| 2087 | /* Poll for input, so what we catch a C-g if it comes in. This |
| 2088 | function is called from x_make_frame_visible, see comment |
| 2089 | there. */ |
| 2090 | |
| 2091 | void |
| 2092 | poll_for_input_1 () |
| 2093 | { |
| 2094 | if (interrupt_input_blocked == 0 |
| 2095 | && !waiting_for_input) |
| 2096 | read_avail_input (0); |
| 2097 | } |
| 2098 | |
| 2099 | /* Timer callback function for poll_timer. TIMER is equal to |
| 2100 | poll_timer. */ |
| 2101 | |
| 2102 | void |
| 2103 | poll_for_input (timer) |
| 2104 | struct atimer *timer; |
| 2105 | { |
| 2106 | if (poll_suppress_count == 0) |
| 2107 | #ifdef SYNC_INPUT |
| 2108 | interrupt_input_pending = 1; |
| 2109 | #else |
| 2110 | poll_for_input_1 (); |
| 2111 | #endif |
| 2112 | } |
| 2113 | |
| 2114 | #endif /* POLL_FOR_INPUT */ |
| 2115 | |
| 2116 | /* Begin signals to poll for input, if they are appropriate. |
| 2117 | This function is called unconditionally from various places. */ |
| 2118 | |
| 2119 | void |
| 2120 | start_polling () |
| 2121 | { |
| 2122 | #ifdef POLL_FOR_INPUT |
| 2123 | if (read_socket_hook && !interrupt_input) |
| 2124 | { |
| 2125 | /* Turn alarm handling on unconditionally. It might have |
| 2126 | been turned off in process.c. */ |
| 2127 | turn_on_atimers (1); |
| 2128 | |
| 2129 | /* If poll timer doesn't exist, are we need one with |
| 2130 | a different interval, start a new one. */ |
| 2131 | if (poll_timer == NULL |
| 2132 | || EMACS_SECS (poll_timer->interval) != polling_period) |
| 2133 | { |
| 2134 | EMACS_TIME interval; |
| 2135 | |
| 2136 | if (poll_timer) |
| 2137 | cancel_atimer (poll_timer); |
| 2138 | |
| 2139 | EMACS_SET_SECS_USECS (interval, polling_period, 0); |
| 2140 | poll_timer = start_atimer (ATIMER_CONTINUOUS, interval, |
| 2141 | poll_for_input, NULL); |
| 2142 | } |
| 2143 | |
| 2144 | /* Let the timer's callback function poll for input |
| 2145 | if this becomes zero. */ |
| 2146 | --poll_suppress_count; |
| 2147 | } |
| 2148 | #endif |
| 2149 | } |
| 2150 | |
| 2151 | /* Nonzero if we are using polling to handle input asynchronously. */ |
| 2152 | |
| 2153 | int |
| 2154 | input_polling_used () |
| 2155 | { |
| 2156 | #ifdef POLL_FOR_INPUT |
| 2157 | return read_socket_hook && !interrupt_input; |
| 2158 | #else |
| 2159 | return 0; |
| 2160 | #endif |
| 2161 | } |
| 2162 | |
| 2163 | /* Turn off polling. */ |
| 2164 | |
| 2165 | void |
| 2166 | stop_polling () |
| 2167 | { |
| 2168 | #ifdef POLL_FOR_INPUT |
| 2169 | if (read_socket_hook && !interrupt_input) |
| 2170 | ++poll_suppress_count; |
| 2171 | #endif |
| 2172 | } |
| 2173 | |
| 2174 | /* Set the value of poll_suppress_count to COUNT |
| 2175 | and start or stop polling accordingly. */ |
| 2176 | |
| 2177 | void |
| 2178 | set_poll_suppress_count (count) |
| 2179 | int count; |
| 2180 | { |
| 2181 | #ifdef POLL_FOR_INPUT |
| 2182 | if (count == 0 && poll_suppress_count != 0) |
| 2183 | { |
| 2184 | poll_suppress_count = 1; |
| 2185 | start_polling (); |
| 2186 | } |
| 2187 | else if (count != 0 && poll_suppress_count == 0) |
| 2188 | { |
| 2189 | stop_polling (); |
| 2190 | } |
| 2191 | poll_suppress_count = count; |
| 2192 | #endif |
| 2193 | } |
| 2194 | |
| 2195 | /* Bind polling_period to a value at least N. |
| 2196 | But don't decrease it. */ |
| 2197 | |
| 2198 | void |
| 2199 | bind_polling_period (n) |
| 2200 | int n; |
| 2201 | { |
| 2202 | #ifdef POLL_FOR_INPUT |
| 2203 | int new = polling_period; |
| 2204 | |
| 2205 | if (n > new) |
| 2206 | new = n; |
| 2207 | |
| 2208 | stop_other_atimers (poll_timer); |
| 2209 | stop_polling (); |
| 2210 | specbind (Qpolling_period, make_number (new)); |
| 2211 | /* Start a new alarm with the new period. */ |
| 2212 | start_polling (); |
| 2213 | #endif |
| 2214 | } |
| 2215 | \f |
| 2216 | /* Apply the control modifier to CHARACTER. */ |
| 2217 | |
| 2218 | int |
| 2219 | make_ctrl_char (c) |
| 2220 | int c; |
| 2221 | { |
| 2222 | /* Save the upper bits here. */ |
| 2223 | int upper = c & ~0177; |
| 2224 | |
| 2225 | c &= 0177; |
| 2226 | |
| 2227 | /* Everything in the columns containing the upper-case letters |
| 2228 | denotes a control character. */ |
| 2229 | if (c >= 0100 && c < 0140) |
| 2230 | { |
| 2231 | int oc = c; |
| 2232 | c &= ~0140; |
| 2233 | /* Set the shift modifier for a control char |
| 2234 | made from a shifted letter. But only for letters! */ |
| 2235 | if (oc >= 'A' && oc <= 'Z') |
| 2236 | c |= shift_modifier; |
| 2237 | } |
| 2238 | |
| 2239 | /* The lower-case letters denote control characters too. */ |
| 2240 | else if (c >= 'a' && c <= 'z') |
| 2241 | c &= ~0140; |
| 2242 | |
| 2243 | /* Include the bits for control and shift |
| 2244 | only if the basic ASCII code can't indicate them. */ |
| 2245 | else if (c >= ' ') |
| 2246 | c |= ctrl_modifier; |
| 2247 | |
| 2248 | /* Replace the high bits. */ |
| 2249 | c |= (upper & ~ctrl_modifier); |
| 2250 | |
| 2251 | return c; |
| 2252 | } |
| 2253 | |
| 2254 | /* Display the help-echo property of the character after the mouse pointer. |
| 2255 | Either show it in the echo area, or call show-help-function to display |
| 2256 | it by other means (maybe in a tooltip). |
| 2257 | |
| 2258 | If HELP is nil, that means clear the previous help echo. |
| 2259 | |
| 2260 | If HELP is a string, display that string. If HELP is a function, |
| 2261 | call it with OBJECT and POS as arguments; the function should |
| 2262 | return a help string or nil for none. For all other types of HELP, |
| 2263 | evaluate it to obtain a string. |
| 2264 | |
| 2265 | WINDOW is the window in which the help was generated, if any. |
| 2266 | It is nil if not in a window. |
| 2267 | |
| 2268 | If OBJECT is a buffer, POS is the position in the buffer where the |
| 2269 | `help-echo' text property was found. |
| 2270 | |
| 2271 | If OBJECT is an overlay, that overlay has a `help-echo' property, |
| 2272 | and POS is the position in the overlay's buffer under the mouse. |
| 2273 | |
| 2274 | If OBJECT is a string (an overlay string or a string displayed with |
| 2275 | the `display' property). POS is the position in that string under |
| 2276 | the mouse. |
| 2277 | |
| 2278 | OK_TO_OVERWRITE_KEYSTROKE_ECHO non-zero means it's okay if the help |
| 2279 | echo overwrites a keystroke echo currently displayed in the echo |
| 2280 | area. |
| 2281 | |
| 2282 | Note: this function may only be called with HELP nil or a string |
| 2283 | from X code running asynchronously. */ |
| 2284 | |
| 2285 | void |
| 2286 | show_help_echo (help, window, object, pos, ok_to_overwrite_keystroke_echo) |
| 2287 | Lisp_Object help, window, object, pos; |
| 2288 | int ok_to_overwrite_keystroke_echo; |
| 2289 | { |
| 2290 | if (!NILP (help) && !STRINGP (help)) |
| 2291 | { |
| 2292 | if (FUNCTIONP (help)) |
| 2293 | { |
| 2294 | Lisp_Object args[4]; |
| 2295 | args[0] = help; |
| 2296 | args[1] = window; |
| 2297 | args[2] = object; |
| 2298 | args[3] = pos; |
| 2299 | help = safe_call (4, args); |
| 2300 | } |
| 2301 | else |
| 2302 | help = safe_eval (help); |
| 2303 | |
| 2304 | if (!STRINGP (help)) |
| 2305 | return; |
| 2306 | } |
| 2307 | |
| 2308 | #ifdef HAVE_MOUSE |
| 2309 | if (!noninteractive && STRINGP (help)) |
| 2310 | help = call1 (Qmouse_fixup_help_message, help); |
| 2311 | #endif |
| 2312 | |
| 2313 | if (STRINGP (help) || NILP (help)) |
| 2314 | { |
| 2315 | if (!NILP (Vshow_help_function)) |
| 2316 | call1 (Vshow_help_function, help); |
| 2317 | else if (/* Don't overwrite minibuffer contents. */ |
| 2318 | !MINI_WINDOW_P (XWINDOW (selected_window)) |
| 2319 | /* Don't overwrite a keystroke echo. */ |
| 2320 | && (NILP (echo_message_buffer) |
| 2321 | || ok_to_overwrite_keystroke_echo) |
| 2322 | /* Don't overwrite a prompt. */ |
| 2323 | && !cursor_in_echo_area) |
| 2324 | { |
| 2325 | if (STRINGP (help)) |
| 2326 | { |
| 2327 | int count = SPECPDL_INDEX (); |
| 2328 | |
| 2329 | if (!help_echo_showing_p) |
| 2330 | Vpre_help_message = current_message (); |
| 2331 | |
| 2332 | specbind (Qmessage_truncate_lines, Qt); |
| 2333 | message3_nolog (help, SBYTES (help), |
| 2334 | STRING_MULTIBYTE (help)); |
| 2335 | unbind_to (count, Qnil); |
| 2336 | } |
| 2337 | else if (STRINGP (Vpre_help_message)) |
| 2338 | { |
| 2339 | message3_nolog (Vpre_help_message, |
| 2340 | SBYTES (Vpre_help_message), |
| 2341 | STRING_MULTIBYTE (Vpre_help_message)); |
| 2342 | Vpre_help_message = Qnil; |
| 2343 | } |
| 2344 | else |
| 2345 | message (0); |
| 2346 | } |
| 2347 | |
| 2348 | help_echo_showing_p = STRINGP (help); |
| 2349 | } |
| 2350 | } |
| 2351 | |
| 2352 | |
| 2353 | \f |
| 2354 | /* Input of single characters from keyboard */ |
| 2355 | |
| 2356 | Lisp_Object print_help (); |
| 2357 | static Lisp_Object kbd_buffer_get_event (); |
| 2358 | static void record_char (); |
| 2359 | |
| 2360 | #ifdef MULTI_KBOARD |
| 2361 | static jmp_buf wrong_kboard_jmpbuf; |
| 2362 | #endif |
| 2363 | |
| 2364 | #define STOP_POLLING \ |
| 2365 | do { if (! polling_stopped_here) stop_polling (); \ |
| 2366 | polling_stopped_here = 1; } while (0) |
| 2367 | |
| 2368 | #define RESUME_POLLING \ |
| 2369 | do { if (polling_stopped_here) start_polling (); \ |
| 2370 | polling_stopped_here = 0; } while (0) |
| 2371 | |
| 2372 | /* read a character from the keyboard; call the redisplay if needed */ |
| 2373 | /* commandflag 0 means do not do auto-saving, but do do redisplay. |
| 2374 | -1 means do not do redisplay, but do do autosaving. |
| 2375 | 1 means do both. */ |
| 2376 | |
| 2377 | /* The arguments MAPS and NMAPS are for menu prompting. |
| 2378 | MAPS is an array of keymaps; NMAPS is the length of MAPS. |
| 2379 | |
| 2380 | PREV_EVENT is the previous input event, or nil if we are reading |
| 2381 | the first event of a key sequence (or not reading a key sequence). |
| 2382 | If PREV_EVENT is t, that is a "magic" value that says |
| 2383 | not to run input methods, but in other respects to act as if |
| 2384 | not reading a key sequence. |
| 2385 | |
| 2386 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
| 2387 | if we used a mouse menu to read the input, or zero otherwise. If |
| 2388 | USED_MOUSE_MENU is null, we don't dereference it. |
| 2389 | |
| 2390 | If END_TIME is non-null, it is a pointer to an EMACS_TIME |
| 2391 | specifying the maximum time to wait until. If no input arrives by |
| 2392 | that time, stop waiting and return nil. |
| 2393 | |
| 2394 | Value is t if we showed a menu and the user rejected it. */ |
| 2395 | |
| 2396 | Lisp_Object |
| 2397 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu, end_time) |
| 2398 | int commandflag; |
| 2399 | int nmaps; |
| 2400 | Lisp_Object *maps; |
| 2401 | Lisp_Object prev_event; |
| 2402 | int *used_mouse_menu; |
| 2403 | EMACS_TIME *end_time; |
| 2404 | { |
| 2405 | volatile Lisp_Object c; |
| 2406 | int count, jmpcount; |
| 2407 | jmp_buf local_getcjmp; |
| 2408 | jmp_buf save_jump; |
| 2409 | volatile int key_already_recorded = 0; |
| 2410 | Lisp_Object tem, save; |
| 2411 | volatile Lisp_Object previous_echo_area_message; |
| 2412 | volatile Lisp_Object also_record; |
| 2413 | volatile int reread; |
| 2414 | struct gcpro gcpro1, gcpro2; |
| 2415 | int polling_stopped_here = 0; |
| 2416 | |
| 2417 | also_record = Qnil; |
| 2418 | |
| 2419 | #if 0 /* This was commented out as part of fixing echo for C-u left. */ |
| 2420 | before_command_key_count = this_command_key_count; |
| 2421 | before_command_echo_length = echo_length (); |
| 2422 | #endif |
| 2423 | c = Qnil; |
| 2424 | previous_echo_area_message = Qnil; |
| 2425 | |
| 2426 | GCPRO2 (c, previous_echo_area_message); |
| 2427 | |
| 2428 | retry: |
| 2429 | |
| 2430 | reread = 0; |
| 2431 | if (CONSP (Vunread_post_input_method_events)) |
| 2432 | { |
| 2433 | c = XCAR (Vunread_post_input_method_events); |
| 2434 | Vunread_post_input_method_events |
| 2435 | = XCDR (Vunread_post_input_method_events); |
| 2436 | |
| 2437 | /* Undo what read_char_x_menu_prompt did when it unread |
| 2438 | additional keys returned by Fx_popup_menu. */ |
| 2439 | if (CONSP (c) |
| 2440 | && (SYMBOLP (XCAR (c)) || INTEGERP (XCAR (c))) |
| 2441 | && NILP (XCDR (c))) |
| 2442 | c = XCAR (c); |
| 2443 | |
| 2444 | reread = 1; |
| 2445 | goto reread_first; |
| 2446 | } |
| 2447 | |
| 2448 | if (unread_command_char != -1) |
| 2449 | { |
| 2450 | XSETINT (c, unread_command_char); |
| 2451 | unread_command_char = -1; |
| 2452 | |
| 2453 | reread = 1; |
| 2454 | goto reread_first; |
| 2455 | } |
| 2456 | |
| 2457 | if (CONSP (Vunread_command_events)) |
| 2458 | { |
| 2459 | c = XCAR (Vunread_command_events); |
| 2460 | Vunread_command_events = XCDR (Vunread_command_events); |
| 2461 | |
| 2462 | /* Undo what read_char_x_menu_prompt did when it unread |
| 2463 | additional keys returned by Fx_popup_menu. */ |
| 2464 | if (CONSP (c) |
| 2465 | && EQ (XCDR (c), Qdisabled) |
| 2466 | && (SYMBOLP (XCAR (c)) || INTEGERP (XCAR (c)))) |
| 2467 | c = XCAR (c); |
| 2468 | |
| 2469 | /* If the queued event is something that used the mouse, |
| 2470 | set used_mouse_menu accordingly. */ |
| 2471 | if (used_mouse_menu |
| 2472 | && (EQ (c, Qtool_bar) || EQ (c, Qmenu_bar))) |
| 2473 | *used_mouse_menu = 1; |
| 2474 | |
| 2475 | reread = 1; |
| 2476 | goto reread_for_input_method; |
| 2477 | } |
| 2478 | |
| 2479 | if (CONSP (Vunread_input_method_events)) |
| 2480 | { |
| 2481 | c = XCAR (Vunread_input_method_events); |
| 2482 | Vunread_input_method_events = XCDR (Vunread_input_method_events); |
| 2483 | |
| 2484 | /* Undo what read_char_x_menu_prompt did when it unread |
| 2485 | additional keys returned by Fx_popup_menu. */ |
| 2486 | if (CONSP (c) |
| 2487 | && (SYMBOLP (XCAR (c)) || INTEGERP (XCAR (c))) |
| 2488 | && NILP (XCDR (c))) |
| 2489 | c = XCAR (c); |
| 2490 | reread = 1; |
| 2491 | goto reread_for_input_method; |
| 2492 | } |
| 2493 | |
| 2494 | this_command_key_count_reset = 0; |
| 2495 | |
| 2496 | if (!NILP (Vexecuting_kbd_macro)) |
| 2497 | { |
| 2498 | /* We set this to Qmacro; since that's not a frame, nobody will |
| 2499 | try to switch frames on us, and the selected window will |
| 2500 | remain unchanged. |
| 2501 | |
| 2502 | Since this event came from a macro, it would be misleading to |
| 2503 | leave internal_last_event_frame set to wherever the last |
| 2504 | real event came from. Normally, a switch-frame event selects |
| 2505 | internal_last_event_frame after each command is read, but |
| 2506 | events read from a macro should never cause a new frame to be |
| 2507 | selected. */ |
| 2508 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
| 2509 | |
| 2510 | /* Exit the macro if we are at the end. |
| 2511 | Also, some things replace the macro with t |
| 2512 | to force an early exit. */ |
| 2513 | if (EQ (Vexecuting_kbd_macro, Qt) |
| 2514 | || executing_kbd_macro_index >= XFASTINT (Flength (Vexecuting_kbd_macro))) |
| 2515 | { |
| 2516 | XSETINT (c, -1); |
| 2517 | goto exit; |
| 2518 | } |
| 2519 | |
| 2520 | c = Faref (Vexecuting_kbd_macro, make_number (executing_kbd_macro_index)); |
| 2521 | if (STRINGP (Vexecuting_kbd_macro) |
| 2522 | && (XINT (c) & 0x80) && (XUINT (c) <= 0xff)) |
| 2523 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
| 2524 | |
| 2525 | executing_kbd_macro_index++; |
| 2526 | |
| 2527 | goto from_macro; |
| 2528 | } |
| 2529 | |
| 2530 | if (!NILP (unread_switch_frame)) |
| 2531 | { |
| 2532 | c = unread_switch_frame; |
| 2533 | unread_switch_frame = Qnil; |
| 2534 | |
| 2535 | /* This event should make it into this_command_keys, and get echoed |
| 2536 | again, so we do not set `reread'. */ |
| 2537 | goto reread_first; |
| 2538 | } |
| 2539 | |
| 2540 | /* if redisplay was requested */ |
| 2541 | if (commandflag >= 0) |
| 2542 | { |
| 2543 | /* If there is pending input, process any events which are not |
| 2544 | user-visible, such as X selection_request events. */ |
| 2545 | if (input_pending |
| 2546 | || detect_input_pending_run_timers (0)) |
| 2547 | swallow_events (0); /* may clear input_pending */ |
| 2548 | |
| 2549 | /* Redisplay if no pending input. */ |
| 2550 | while (!input_pending) |
| 2551 | { |
| 2552 | if (help_echo_showing_p && !EQ (selected_window, minibuf_window)) |
| 2553 | redisplay_preserve_echo_area (5); |
| 2554 | else |
| 2555 | redisplay (); |
| 2556 | |
| 2557 | if (!input_pending) |
| 2558 | /* Normal case: no input arrived during redisplay. */ |
| 2559 | break; |
| 2560 | |
| 2561 | /* Input arrived and pre-empted redisplay. |
| 2562 | Process any events which are not user-visible. */ |
| 2563 | swallow_events (0); |
| 2564 | /* If that cleared input_pending, try again to redisplay. */ |
| 2565 | } |
| 2566 | } |
| 2567 | |
| 2568 | /* Message turns off echoing unless more keystrokes turn it on again. |
| 2569 | |
| 2570 | The code in 20.x for the condition was |
| 2571 | |
| 2572 | 1. echo_area_glyphs && *echo_area_glyphs |
| 2573 | 2. && echo_area_glyphs != current_kboard->echobuf |
| 2574 | 3. && ok_to_echo_at_next_pause != echo_area_glyphs |
| 2575 | |
| 2576 | (1) means there's a current message displayed |
| 2577 | |
| 2578 | (2) means it's not the message from echoing from the current |
| 2579 | kboard. |
| 2580 | |
| 2581 | (3) There's only one place in 20.x where ok_to_echo_at_next_pause |
| 2582 | is set to a non-null value. This is done in read_char and it is |
| 2583 | set to echo_area_glyphs after a call to echo_char. That means |
| 2584 | ok_to_echo_at_next_pause is either null or |
| 2585 | current_kboard->echobuf with the appropriate current_kboard at |
| 2586 | that time. |
| 2587 | |
| 2588 | So, condition (3) means in clear text ok_to_echo_at_next_pause |
| 2589 | must be either null, or the current message isn't from echoing at |
| 2590 | all, or it's from echoing from a different kboard than the |
| 2591 | current one. */ |
| 2592 | |
| 2593 | if (/* There currently is something in the echo area. */ |
| 2594 | !NILP (echo_area_buffer[0]) |
| 2595 | && (/* And it's either not from echoing. */ |
| 2596 | !EQ (echo_area_buffer[0], echo_message_buffer) |
| 2597 | /* Or it's an echo from a different kboard. */ |
| 2598 | || echo_kboard != current_kboard |
| 2599 | /* Or we explicitly allow overwriting whatever there is. */ |
| 2600 | || ok_to_echo_at_next_pause == NULL)) |
| 2601 | cancel_echoing (); |
| 2602 | else |
| 2603 | echo_dash (); |
| 2604 | |
| 2605 | /* Try reading a character via menu prompting in the minibuf. |
| 2606 | Try this before the sit-for, because the sit-for |
| 2607 | would do the wrong thing if we are supposed to do |
| 2608 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading |
| 2609 | after a mouse event so don't try a minibuf menu. */ |
| 2610 | c = Qnil; |
| 2611 | if (nmaps > 0 && INTERACTIVE |
| 2612 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) |
| 2613 | /* Don't bring up a menu if we already have another event. */ |
| 2614 | && NILP (Vunread_command_events) |
| 2615 | && unread_command_char < 0 |
| 2616 | && !detect_input_pending_run_timers (0)) |
| 2617 | { |
| 2618 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); |
| 2619 | if (! NILP (c)) |
| 2620 | { |
| 2621 | key_already_recorded = 1; |
| 2622 | goto non_reread_1; |
| 2623 | } |
| 2624 | } |
| 2625 | |
| 2626 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
| 2627 | We will do that below, temporarily for short sections of code, |
| 2628 | when appropriate. local_getcjmp must be in effect |
| 2629 | around any call to sit_for or kbd_buffer_get_event; |
| 2630 | it *must not* be in effect when we call redisplay. */ |
| 2631 | |
| 2632 | jmpcount = SPECPDL_INDEX (); |
| 2633 | if (_setjmp (local_getcjmp)) |
| 2634 | { |
| 2635 | /* We must have saved the outer value of getcjmp here, |
| 2636 | so restore it now. */ |
| 2637 | restore_getcjmp (save_jump); |
| 2638 | unbind_to (jmpcount, Qnil); |
| 2639 | XSETINT (c, quit_char); |
| 2640 | internal_last_event_frame = selected_frame; |
| 2641 | Vlast_event_frame = internal_last_event_frame; |
| 2642 | /* If we report the quit char as an event, |
| 2643 | don't do so more than once. */ |
| 2644 | if (!NILP (Vinhibit_quit)) |
| 2645 | Vquit_flag = Qnil; |
| 2646 | |
| 2647 | #ifdef MULTI_KBOARD |
| 2648 | { |
| 2649 | KBOARD *kb = FRAME_KBOARD (XFRAME (selected_frame)); |
| 2650 | if (kb != current_kboard) |
| 2651 | { |
| 2652 | Lisp_Object link = kb->kbd_queue; |
| 2653 | /* We shouldn't get here if we were in single-kboard mode! */ |
| 2654 | if (single_kboard) |
| 2655 | abort (); |
| 2656 | if (CONSP (link)) |
| 2657 | { |
| 2658 | while (CONSP (XCDR (link))) |
| 2659 | link = XCDR (link); |
| 2660 | if (!NILP (XCDR (link))) |
| 2661 | abort (); |
| 2662 | } |
| 2663 | if (!CONSP (link)) |
| 2664 | kb->kbd_queue = Fcons (c, Qnil); |
| 2665 | else |
| 2666 | XSETCDR (link, Fcons (c, Qnil)); |
| 2667 | kb->kbd_queue_has_data = 1; |
| 2668 | current_kboard = kb; |
| 2669 | /* This is going to exit from read_char |
| 2670 | so we had better get rid of this frame's stuff. */ |
| 2671 | UNGCPRO; |
| 2672 | longjmp (wrong_kboard_jmpbuf, 1); |
| 2673 | } |
| 2674 | } |
| 2675 | #endif |
| 2676 | goto non_reread; |
| 2677 | } |
| 2678 | |
| 2679 | timer_start_idle (); |
| 2680 | |
| 2681 | /* If in middle of key sequence and minibuffer not active, |
| 2682 | start echoing if enough time elapses. */ |
| 2683 | |
| 2684 | if (minibuf_level == 0 |
| 2685 | && !end_time |
| 2686 | && !current_kboard->immediate_echo |
| 2687 | && this_command_key_count > 0 |
| 2688 | && ! noninteractive |
| 2689 | && (FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 2690 | && NILP (Fzerop (Vecho_keystrokes)) |
| 2691 | && (/* No message. */ |
| 2692 | NILP (echo_area_buffer[0]) |
| 2693 | /* Or empty message. */ |
| 2694 | || (BUF_BEG (XBUFFER (echo_area_buffer[0])) |
| 2695 | == BUF_Z (XBUFFER (echo_area_buffer[0]))) |
| 2696 | /* Or already echoing from same kboard. */ |
| 2697 | || (echo_kboard && ok_to_echo_at_next_pause == echo_kboard) |
| 2698 | /* Or not echoing before and echoing allowed. */ |
| 2699 | || (!echo_kboard && ok_to_echo_at_next_pause))) |
| 2700 | { |
| 2701 | /* After a mouse event, start echoing right away. |
| 2702 | This is because we are probably about to display a menu, |
| 2703 | and we don't want to delay before doing so. */ |
| 2704 | if (EVENT_HAS_PARAMETERS (prev_event)) |
| 2705 | echo_now (); |
| 2706 | else |
| 2707 | { |
| 2708 | Lisp_Object tem0; |
| 2709 | |
| 2710 | save_getcjmp (save_jump); |
| 2711 | restore_getcjmp (local_getcjmp); |
| 2712 | tem0 = sit_for (Vecho_keystrokes, 1, 1); |
| 2713 | restore_getcjmp (save_jump); |
| 2714 | if (EQ (tem0, Qt) |
| 2715 | && ! CONSP (Vunread_command_events)) |
| 2716 | echo_now (); |
| 2717 | } |
| 2718 | } |
| 2719 | |
| 2720 | /* Maybe auto save due to number of keystrokes. */ |
| 2721 | |
| 2722 | if (commandflag != 0 |
| 2723 | && auto_save_interval > 0 |
| 2724 | && num_nonmacro_input_events - last_auto_save > max (auto_save_interval, 20) |
| 2725 | && !detect_input_pending_run_timers (0)) |
| 2726 | { |
| 2727 | Fdo_auto_save (Qnil, Qnil); |
| 2728 | /* Hooks can actually change some buffers in auto save. */ |
| 2729 | redisplay (); |
| 2730 | } |
| 2731 | |
| 2732 | /* Try reading using an X menu. |
| 2733 | This is never confused with reading using the minibuf |
| 2734 | because the recursive call of read_char in read_char_minibuf_menu_prompt |
| 2735 | does not pass on any keymaps. */ |
| 2736 | |
| 2737 | if (nmaps > 0 && INTERACTIVE |
| 2738 | && !NILP (prev_event) |
| 2739 | && EVENT_HAS_PARAMETERS (prev_event) |
| 2740 | && !EQ (XCAR (prev_event), Qmenu_bar) |
| 2741 | && !EQ (XCAR (prev_event), Qtool_bar) |
| 2742 | /* Don't bring up a menu if we already have another event. */ |
| 2743 | && NILP (Vunread_command_events) |
| 2744 | && unread_command_char < 0) |
| 2745 | { |
| 2746 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
| 2747 | |
| 2748 | /* Now that we have read an event, Emacs is not idle. */ |
| 2749 | timer_stop_idle (); |
| 2750 | |
| 2751 | goto exit; |
| 2752 | } |
| 2753 | |
| 2754 | /* Maybe autosave and/or garbage collect due to idleness. */ |
| 2755 | |
| 2756 | if (INTERACTIVE && NILP (c)) |
| 2757 | { |
| 2758 | int delay_level, buffer_size; |
| 2759 | |
| 2760 | /* Slow down auto saves logarithmically in size of current buffer, |
| 2761 | and garbage collect while we're at it. */ |
| 2762 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
| 2763 | last_non_minibuf_size = Z - BEG; |
| 2764 | buffer_size = (last_non_minibuf_size >> 8) + 1; |
| 2765 | delay_level = 0; |
| 2766 | while (buffer_size > 64) |
| 2767 | delay_level++, buffer_size -= buffer_size >> 2; |
| 2768 | if (delay_level < 4) delay_level = 4; |
| 2769 | /* delay_level is 4 for files under around 50k, 7 at 100k, |
| 2770 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ |
| 2771 | |
| 2772 | /* Auto save if enough time goes by without input. */ |
| 2773 | if (commandflag != 0 |
| 2774 | && num_nonmacro_input_events > last_auto_save |
| 2775 | && INTEGERP (Vauto_save_timeout) |
| 2776 | && XINT (Vauto_save_timeout) > 0) |
| 2777 | { |
| 2778 | Lisp_Object tem0; |
| 2779 | int timeout = delay_level * XFASTINT (Vauto_save_timeout) / 4; |
| 2780 | |
| 2781 | save_getcjmp (save_jump); |
| 2782 | restore_getcjmp (local_getcjmp); |
| 2783 | tem0 = sit_for (make_number (timeout), 1, 1); |
| 2784 | restore_getcjmp (save_jump); |
| 2785 | |
| 2786 | if (EQ (tem0, Qt) |
| 2787 | && ! CONSP (Vunread_command_events)) |
| 2788 | { |
| 2789 | Fdo_auto_save (Qnil, Qnil); |
| 2790 | |
| 2791 | /* If we have auto-saved and there is still no input |
| 2792 | available, garbage collect if there has been enough |
| 2793 | consing going on to make it worthwhile. */ |
| 2794 | if (!detect_input_pending_run_timers (0) |
| 2795 | && consing_since_gc > gc_cons_threshold / 2) |
| 2796 | Fgarbage_collect (); |
| 2797 | |
| 2798 | redisplay (); |
| 2799 | } |
| 2800 | } |
| 2801 | } |
| 2802 | |
| 2803 | /* If this has become non-nil here, it has been set by a timer |
| 2804 | or sentinel or filter. */ |
| 2805 | if (CONSP (Vunread_command_events)) |
| 2806 | { |
| 2807 | c = XCAR (Vunread_command_events); |
| 2808 | Vunread_command_events = XCDR (Vunread_command_events); |
| 2809 | } |
| 2810 | |
| 2811 | /* Read something from current KBOARD's side queue, if possible. */ |
| 2812 | |
| 2813 | if (NILP (c)) |
| 2814 | { |
| 2815 | if (current_kboard->kbd_queue_has_data) |
| 2816 | { |
| 2817 | if (!CONSP (current_kboard->kbd_queue)) |
| 2818 | abort (); |
| 2819 | c = XCAR (current_kboard->kbd_queue); |
| 2820 | current_kboard->kbd_queue |
| 2821 | = XCDR (current_kboard->kbd_queue); |
| 2822 | if (NILP (current_kboard->kbd_queue)) |
| 2823 | current_kboard->kbd_queue_has_data = 0; |
| 2824 | input_pending = readable_events (0); |
| 2825 | if (EVENT_HAS_PARAMETERS (c) |
| 2826 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) |
| 2827 | internal_last_event_frame = XCAR (XCDR (c)); |
| 2828 | Vlast_event_frame = internal_last_event_frame; |
| 2829 | } |
| 2830 | } |
| 2831 | |
| 2832 | #ifdef MULTI_KBOARD |
| 2833 | /* If current_kboard's side queue is empty check the other kboards. |
| 2834 | If one of them has data that we have not yet seen here, |
| 2835 | switch to it and process the data waiting for it. |
| 2836 | |
| 2837 | Note: if the events queued up for another kboard |
| 2838 | have already been seen here, and therefore are not a complete command, |
| 2839 | the kbd_queue_has_data field is 0, so we skip that kboard here. |
| 2840 | That's to avoid an infinite loop switching between kboards here. */ |
| 2841 | if (NILP (c) && !single_kboard) |
| 2842 | { |
| 2843 | KBOARD *kb; |
| 2844 | for (kb = all_kboards; kb; kb = kb->next_kboard) |
| 2845 | if (kb->kbd_queue_has_data) |
| 2846 | { |
| 2847 | current_kboard = kb; |
| 2848 | /* This is going to exit from read_char |
| 2849 | so we had better get rid of this frame's stuff. */ |
| 2850 | UNGCPRO; |
| 2851 | longjmp (wrong_kboard_jmpbuf, 1); |
| 2852 | } |
| 2853 | } |
| 2854 | #endif |
| 2855 | |
| 2856 | wrong_kboard: |
| 2857 | |
| 2858 | STOP_POLLING; |
| 2859 | |
| 2860 | /* Finally, we read from the main queue, |
| 2861 | and if that gives us something we can't use yet, we put it on the |
| 2862 | appropriate side queue and try again. */ |
| 2863 | |
| 2864 | if (NILP (c)) |
| 2865 | { |
| 2866 | KBOARD *kb; |
| 2867 | |
| 2868 | if (end_time) |
| 2869 | { |
| 2870 | EMACS_TIME now; |
| 2871 | EMACS_GET_TIME (now); |
| 2872 | if (EMACS_TIME_GE (now, *end_time)) |
| 2873 | goto exit; |
| 2874 | } |
| 2875 | |
| 2876 | /* Actually read a character, waiting if necessary. */ |
| 2877 | save_getcjmp (save_jump); |
| 2878 | restore_getcjmp (local_getcjmp); |
| 2879 | timer_start_idle (); |
| 2880 | c = kbd_buffer_get_event (&kb, used_mouse_menu, end_time); |
| 2881 | restore_getcjmp (save_jump); |
| 2882 | |
| 2883 | #ifdef MULTI_KBOARD |
| 2884 | if (! NILP (c) && (kb != current_kboard)) |
| 2885 | { |
| 2886 | Lisp_Object link = kb->kbd_queue; |
| 2887 | if (CONSP (link)) |
| 2888 | { |
| 2889 | while (CONSP (XCDR (link))) |
| 2890 | link = XCDR (link); |
| 2891 | if (!NILP (XCDR (link))) |
| 2892 | abort (); |
| 2893 | } |
| 2894 | if (!CONSP (link)) |
| 2895 | kb->kbd_queue = Fcons (c, Qnil); |
| 2896 | else |
| 2897 | XSETCDR (link, Fcons (c, Qnil)); |
| 2898 | kb->kbd_queue_has_data = 1; |
| 2899 | c = Qnil; |
| 2900 | if (single_kboard) |
| 2901 | goto wrong_kboard; |
| 2902 | current_kboard = kb; |
| 2903 | /* This is going to exit from read_char |
| 2904 | so we had better get rid of this frame's stuff. */ |
| 2905 | UNGCPRO; |
| 2906 | longjmp (wrong_kboard_jmpbuf, 1); |
| 2907 | } |
| 2908 | #endif |
| 2909 | } |
| 2910 | |
| 2911 | /* Terminate Emacs in batch mode if at eof. */ |
| 2912 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
| 2913 | Fkill_emacs (make_number (1)); |
| 2914 | |
| 2915 | if (INTEGERP (c)) |
| 2916 | { |
| 2917 | /* Add in any extra modifiers, where appropriate. */ |
| 2918 | if ((extra_keyboard_modifiers & CHAR_CTL) |
| 2919 | || ((extra_keyboard_modifiers & 0177) < ' ' |
| 2920 | && (extra_keyboard_modifiers & 0177) != 0)) |
| 2921 | XSETINT (c, make_ctrl_char (XINT (c))); |
| 2922 | |
| 2923 | /* Transfer any other modifier bits directly from |
| 2924 | extra_keyboard_modifiers to c. Ignore the actual character code |
| 2925 | in the low 16 bits of extra_keyboard_modifiers. */ |
| 2926 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
| 2927 | } |
| 2928 | |
| 2929 | non_reread: |
| 2930 | |
| 2931 | timer_stop_idle (); |
| 2932 | RESUME_POLLING; |
| 2933 | |
| 2934 | if (NILP (c)) |
| 2935 | { |
| 2936 | if (commandflag >= 0 |
| 2937 | && !input_pending && !detect_input_pending_run_timers (0)) |
| 2938 | redisplay (); |
| 2939 | |
| 2940 | goto wrong_kboard; |
| 2941 | } |
| 2942 | |
| 2943 | non_reread_1: |
| 2944 | |
| 2945 | /* Buffer switch events are only for internal wakeups |
| 2946 | so don't show them to the user. |
| 2947 | Also, don't record a key if we already did. */ |
| 2948 | if (BUFFERP (c) || key_already_recorded) |
| 2949 | goto exit; |
| 2950 | |
| 2951 | /* Process special events within read_char |
| 2952 | and loop around to read another event. */ |
| 2953 | save = Vquit_flag; |
| 2954 | Vquit_flag = Qnil; |
| 2955 | tem = access_keymap (get_keymap (Vspecial_event_map, 0, 1), c, 0, 0, 1); |
| 2956 | Vquit_flag = save; |
| 2957 | |
| 2958 | if (!NILP (tem)) |
| 2959 | { |
| 2960 | int was_locked = single_kboard; |
| 2961 | |
| 2962 | last_input_char = c; |
| 2963 | Fcommand_execute (tem, Qnil, Fvector (1, &last_input_char), Qt); |
| 2964 | |
| 2965 | if (CONSP (c) && EQ (XCAR (c), Qselect_window)) |
| 2966 | /* We stopped being idle for this event; undo that. This |
| 2967 | prevents automatic window selection (under |
| 2968 | mouse_autoselect_window from acting as a real input event, for |
| 2969 | example banishing the mouse under mouse-avoidance-mode. */ |
| 2970 | timer_resume_idle (); |
| 2971 | |
| 2972 | /* Resume allowing input from any kboard, if that was true before. */ |
| 2973 | if (!was_locked) |
| 2974 | any_kboard_state (); |
| 2975 | |
| 2976 | goto retry; |
| 2977 | } |
| 2978 | |
| 2979 | /* Handle things that only apply to characters. */ |
| 2980 | if (INTEGERP (c)) |
| 2981 | { |
| 2982 | /* If kbd_buffer_get_event gave us an EOF, return that. */ |
| 2983 | if (XINT (c) == -1) |
| 2984 | goto exit; |
| 2985 | |
| 2986 | if ((STRINGP (Vkeyboard_translate_table) |
| 2987 | && SCHARS (Vkeyboard_translate_table) > (unsigned) XFASTINT (c)) |
| 2988 | || (VECTORP (Vkeyboard_translate_table) |
| 2989 | && XVECTOR (Vkeyboard_translate_table)->size > (unsigned) XFASTINT (c)) |
| 2990 | || (CHAR_TABLE_P (Vkeyboard_translate_table) |
| 2991 | && CHAR_VALID_P (XINT (c), 0))) |
| 2992 | { |
| 2993 | Lisp_Object d; |
| 2994 | d = Faref (Vkeyboard_translate_table, c); |
| 2995 | /* nil in keyboard-translate-table means no translation. */ |
| 2996 | if (!NILP (d)) |
| 2997 | c = d; |
| 2998 | } |
| 2999 | } |
| 3000 | |
| 3001 | /* If this event is a mouse click in the menu bar, |
| 3002 | return just menu-bar for now. Modify the mouse click event |
| 3003 | so we won't do this twice, then queue it up. */ |
| 3004 | if (EVENT_HAS_PARAMETERS (c) |
| 3005 | && CONSP (XCDR (c)) |
| 3006 | && CONSP (EVENT_START (c)) |
| 3007 | && CONSP (XCDR (EVENT_START (c)))) |
| 3008 | { |
| 3009 | Lisp_Object posn; |
| 3010 | |
| 3011 | posn = POSN_POSN (EVENT_START (c)); |
| 3012 | /* Handle menu-bar events: |
| 3013 | insert the dummy prefix event `menu-bar'. */ |
| 3014 | if (EQ (posn, Qmenu_bar) || EQ (posn, Qtool_bar)) |
| 3015 | { |
| 3016 | /* Change menu-bar to (menu-bar) as the event "position". */ |
| 3017 | POSN_SET_POSN (EVENT_START (c), Fcons (posn, Qnil)); |
| 3018 | |
| 3019 | also_record = c; |
| 3020 | Vunread_command_events = Fcons (c, Vunread_command_events); |
| 3021 | c = posn; |
| 3022 | } |
| 3023 | } |
| 3024 | |
| 3025 | /* Store these characters into recent_keys, the dribble file if any, |
| 3026 | and the keyboard macro being defined, if any. */ |
| 3027 | record_char (c); |
| 3028 | if (! NILP (also_record)) |
| 3029 | record_char (also_record); |
| 3030 | |
| 3031 | /* Wipe the echo area. |
| 3032 | But first, if we are about to use an input method, |
| 3033 | save the echo area contents for it to refer to. */ |
| 3034 | if (INTEGERP (c) |
| 3035 | && ! NILP (Vinput_method_function) |
| 3036 | && (unsigned) XINT (c) >= ' ' |
| 3037 | && (unsigned) XINT (c) != 127 |
| 3038 | && (unsigned) XINT (c) < 256) |
| 3039 | { |
| 3040 | previous_echo_area_message = Fcurrent_message (); |
| 3041 | Vinput_method_previous_message = previous_echo_area_message; |
| 3042 | } |
| 3043 | |
| 3044 | /* Now wipe the echo area, except for help events which do their |
| 3045 | own stuff with the echo area. */ |
| 3046 | if (!CONSP (c) |
| 3047 | || (!(EQ (Qhelp_echo, XCAR (c))) |
| 3048 | && !(EQ (Qswitch_frame, XCAR (c))))) |
| 3049 | { |
| 3050 | if (!NILP (echo_area_buffer[0])) |
| 3051 | safe_run_hooks (Qecho_area_clear_hook); |
| 3052 | clear_message (1, 0); |
| 3053 | } |
| 3054 | |
| 3055 | reread_for_input_method: |
| 3056 | from_macro: |
| 3057 | /* Pass this to the input method, if appropriate. */ |
| 3058 | if (INTEGERP (c) |
| 3059 | && ! NILP (Vinput_method_function) |
| 3060 | /* Don't run the input method within a key sequence, |
| 3061 | after the first event of the key sequence. */ |
| 3062 | && NILP (prev_event) |
| 3063 | && (unsigned) XINT (c) >= ' ' |
| 3064 | && (unsigned) XINT (c) != 127 |
| 3065 | && (unsigned) XINT (c) < 256) |
| 3066 | { |
| 3067 | Lisp_Object keys; |
| 3068 | int key_count, key_count_reset; |
| 3069 | struct gcpro gcpro1; |
| 3070 | int count = SPECPDL_INDEX (); |
| 3071 | |
| 3072 | /* Save the echo status. */ |
| 3073 | int saved_immediate_echo = current_kboard->immediate_echo; |
| 3074 | struct kboard *saved_ok_to_echo = ok_to_echo_at_next_pause; |
| 3075 | Lisp_Object saved_echo_string = current_kboard->echo_string; |
| 3076 | int saved_echo_after_prompt = current_kboard->echo_after_prompt; |
| 3077 | |
| 3078 | #if 0 |
| 3079 | if (before_command_restore_flag) |
| 3080 | { |
| 3081 | this_command_key_count = before_command_key_count_1; |
| 3082 | if (this_command_key_count < this_single_command_key_start) |
| 3083 | this_single_command_key_start = this_command_key_count; |
| 3084 | echo_truncate (before_command_echo_length_1); |
| 3085 | before_command_restore_flag = 0; |
| 3086 | } |
| 3087 | #endif |
| 3088 | |
| 3089 | /* Save the this_command_keys status. */ |
| 3090 | key_count = this_command_key_count; |
| 3091 | key_count_reset = this_command_key_count_reset; |
| 3092 | |
| 3093 | if (key_count > 0) |
| 3094 | keys = Fcopy_sequence (this_command_keys); |
| 3095 | else |
| 3096 | keys = Qnil; |
| 3097 | GCPRO1 (keys); |
| 3098 | |
| 3099 | /* Clear out this_command_keys. */ |
| 3100 | this_command_key_count = 0; |
| 3101 | this_command_key_count_reset = 0; |
| 3102 | |
| 3103 | /* Now wipe the echo area. */ |
| 3104 | if (!NILP (echo_area_buffer[0])) |
| 3105 | safe_run_hooks (Qecho_area_clear_hook); |
| 3106 | clear_message (1, 0); |
| 3107 | echo_truncate (0); |
| 3108 | |
| 3109 | /* If we are not reading a key sequence, |
| 3110 | never use the echo area. */ |
| 3111 | if (maps == 0) |
| 3112 | { |
| 3113 | specbind (Qinput_method_use_echo_area, Qt); |
| 3114 | } |
| 3115 | |
| 3116 | /* Call the input method. */ |
| 3117 | tem = call1 (Vinput_method_function, c); |
| 3118 | |
| 3119 | tem = unbind_to (count, tem); |
| 3120 | |
| 3121 | /* Restore the saved echoing state |
| 3122 | and this_command_keys state. */ |
| 3123 | this_command_key_count = key_count; |
| 3124 | this_command_key_count_reset = key_count_reset; |
| 3125 | if (key_count > 0) |
| 3126 | this_command_keys = keys; |
| 3127 | |
| 3128 | cancel_echoing (); |
| 3129 | ok_to_echo_at_next_pause = saved_ok_to_echo; |
| 3130 | current_kboard->echo_string = saved_echo_string; |
| 3131 | current_kboard->echo_after_prompt = saved_echo_after_prompt; |
| 3132 | if (saved_immediate_echo) |
| 3133 | echo_now (); |
| 3134 | |
| 3135 | UNGCPRO; |
| 3136 | |
| 3137 | /* The input method can return no events. */ |
| 3138 | if (! CONSP (tem)) |
| 3139 | { |
| 3140 | /* Bring back the previous message, if any. */ |
| 3141 | if (! NILP (previous_echo_area_message)) |
| 3142 | message_with_string ("%s", previous_echo_area_message, 0); |
| 3143 | goto retry; |
| 3144 | } |
| 3145 | /* It returned one event or more. */ |
| 3146 | c = XCAR (tem); |
| 3147 | Vunread_post_input_method_events |
| 3148 | = nconc2 (XCDR (tem), Vunread_post_input_method_events); |
| 3149 | } |
| 3150 | |
| 3151 | reread_first: |
| 3152 | |
| 3153 | /* Display help if not echoing. */ |
| 3154 | if (CONSP (c) && EQ (XCAR (c), Qhelp_echo)) |
| 3155 | { |
| 3156 | /* (help-echo FRAME HELP WINDOW OBJECT POS). */ |
| 3157 | Lisp_Object help, object, position, window, tem; |
| 3158 | |
| 3159 | tem = Fcdr (XCDR (c)); |
| 3160 | help = Fcar (tem); |
| 3161 | tem = Fcdr (tem); |
| 3162 | window = Fcar (tem); |
| 3163 | tem = Fcdr (tem); |
| 3164 | object = Fcar (tem); |
| 3165 | tem = Fcdr (tem); |
| 3166 | position = Fcar (tem); |
| 3167 | |
| 3168 | show_help_echo (help, window, object, position, 0); |
| 3169 | |
| 3170 | /* We stopped being idle for this event; undo that. */ |
| 3171 | timer_resume_idle (); |
| 3172 | goto retry; |
| 3173 | } |
| 3174 | |
| 3175 | if (! reread || this_command_key_count == 0 |
| 3176 | || this_command_key_count_reset) |
| 3177 | { |
| 3178 | |
| 3179 | /* Don't echo mouse motion events. */ |
| 3180 | if ((FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 3181 | && NILP (Fzerop (Vecho_keystrokes)) |
| 3182 | && ! (EVENT_HAS_PARAMETERS (c) |
| 3183 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) |
| 3184 | { |
| 3185 | echo_char (c); |
| 3186 | if (! NILP (also_record)) |
| 3187 | echo_char (also_record); |
| 3188 | /* Once we reread a character, echoing can happen |
| 3189 | the next time we pause to read a new one. */ |
| 3190 | ok_to_echo_at_next_pause = current_kboard; |
| 3191 | } |
| 3192 | |
| 3193 | /* Record this character as part of the current key. */ |
| 3194 | add_command_key (c); |
| 3195 | if (! NILP (also_record)) |
| 3196 | add_command_key (also_record); |
| 3197 | } |
| 3198 | |
| 3199 | last_input_char = c; |
| 3200 | num_input_events++; |
| 3201 | |
| 3202 | /* Process the help character specially if enabled */ |
| 3203 | if (!NILP (Vhelp_form) && help_char_p (c)) |
| 3204 | { |
| 3205 | Lisp_Object tem0; |
| 3206 | count = SPECPDL_INDEX (); |
| 3207 | |
| 3208 | record_unwind_protect (Fset_window_configuration, |
| 3209 | Fcurrent_window_configuration (Qnil)); |
| 3210 | |
| 3211 | tem0 = Feval (Vhelp_form); |
| 3212 | if (STRINGP (tem0)) |
| 3213 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
| 3214 | |
| 3215 | cancel_echoing (); |
| 3216 | do |
| 3217 | c = read_char (0, 0, 0, Qnil, 0, NULL); |
| 3218 | while (BUFFERP (c)); |
| 3219 | /* Remove the help from the frame */ |
| 3220 | unbind_to (count, Qnil); |
| 3221 | |
| 3222 | redisplay (); |
| 3223 | if (EQ (c, make_number (040))) |
| 3224 | { |
| 3225 | cancel_echoing (); |
| 3226 | do |
| 3227 | c = read_char (0, 0, 0, Qnil, 0, NULL); |
| 3228 | while (BUFFERP (c)); |
| 3229 | } |
| 3230 | } |
| 3231 | |
| 3232 | exit: |
| 3233 | RESUME_POLLING; |
| 3234 | RETURN_UNGCPRO (c); |
| 3235 | } |
| 3236 | |
| 3237 | /* Record a key that came from a mouse menu. |
| 3238 | Record it for echoing, for this-command-keys, and so on. */ |
| 3239 | |
| 3240 | static void |
| 3241 | record_menu_key (c) |
| 3242 | Lisp_Object c; |
| 3243 | { |
| 3244 | /* Wipe the echo area. */ |
| 3245 | clear_message (1, 0); |
| 3246 | |
| 3247 | record_char (c); |
| 3248 | |
| 3249 | #if 0 |
| 3250 | before_command_key_count = this_command_key_count; |
| 3251 | before_command_echo_length = echo_length (); |
| 3252 | #endif |
| 3253 | |
| 3254 | /* Don't echo mouse motion events. */ |
| 3255 | if ((FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 3256 | && NILP (Fzerop (Vecho_keystrokes))) |
| 3257 | { |
| 3258 | echo_char (c); |
| 3259 | |
| 3260 | /* Once we reread a character, echoing can happen |
| 3261 | the next time we pause to read a new one. */ |
| 3262 | ok_to_echo_at_next_pause = 0; |
| 3263 | } |
| 3264 | |
| 3265 | /* Record this character as part of the current key. */ |
| 3266 | add_command_key (c); |
| 3267 | |
| 3268 | /* Re-reading in the middle of a command */ |
| 3269 | last_input_char = c; |
| 3270 | num_input_events++; |
| 3271 | } |
| 3272 | |
| 3273 | /* Return 1 if should recognize C as "the help character". */ |
| 3274 | |
| 3275 | int |
| 3276 | help_char_p (c) |
| 3277 | Lisp_Object c; |
| 3278 | { |
| 3279 | Lisp_Object tail; |
| 3280 | |
| 3281 | if (EQ (c, Vhelp_char)) |
| 3282 | return 1; |
| 3283 | for (tail = Vhelp_event_list; CONSP (tail); tail = XCDR (tail)) |
| 3284 | if (EQ (c, XCAR (tail))) |
| 3285 | return 1; |
| 3286 | return 0; |
| 3287 | } |
| 3288 | |
| 3289 | /* Record the input event C in various ways. */ |
| 3290 | |
| 3291 | static void |
| 3292 | record_char (c) |
| 3293 | Lisp_Object c; |
| 3294 | { |
| 3295 | int recorded = 0; |
| 3296 | |
| 3297 | if (CONSP (c) && (EQ (XCAR (c), Qhelp_echo) || EQ (XCAR (c), Qmouse_movement))) |
| 3298 | { |
| 3299 | /* To avoid filling recent_keys with help-echo and mouse-movement |
| 3300 | events, we filter out repeated help-echo events, only store the |
| 3301 | first and last in a series of mouse-movement events, and don't |
| 3302 | store repeated help-echo events which are only separated by |
| 3303 | mouse-movement events. */ |
| 3304 | |
| 3305 | Lisp_Object ev1, ev2, ev3; |
| 3306 | int ix1, ix2, ix3; |
| 3307 | |
| 3308 | if ((ix1 = recent_keys_index - 1) < 0) |
| 3309 | ix1 = NUM_RECENT_KEYS - 1; |
| 3310 | ev1 = AREF (recent_keys, ix1); |
| 3311 | |
| 3312 | if ((ix2 = ix1 - 1) < 0) |
| 3313 | ix2 = NUM_RECENT_KEYS - 1; |
| 3314 | ev2 = AREF (recent_keys, ix2); |
| 3315 | |
| 3316 | if ((ix3 = ix2 - 1) < 0) |
| 3317 | ix3 = NUM_RECENT_KEYS - 1; |
| 3318 | ev3 = AREF (recent_keys, ix3); |
| 3319 | |
| 3320 | if (EQ (XCAR (c), Qhelp_echo)) |
| 3321 | { |
| 3322 | /* Don't record `help-echo' in recent_keys unless it shows some help |
| 3323 | message, and a different help than the previously recorded |
| 3324 | event. */ |
| 3325 | Lisp_Object help, last_help; |
| 3326 | |
| 3327 | help = Fcar_safe (Fcdr_safe (XCDR (c))); |
| 3328 | if (!STRINGP (help)) |
| 3329 | recorded = 1; |
| 3330 | else if (CONSP (ev1) && EQ (XCAR (ev1), Qhelp_echo) |
| 3331 | && (last_help = Fcar_safe (Fcdr_safe (XCDR (ev1))), EQ (last_help, help))) |
| 3332 | recorded = 1; |
| 3333 | else if (CONSP (ev1) && EQ (XCAR (ev1), Qmouse_movement) |
| 3334 | && CONSP (ev2) && EQ (XCAR (ev2), Qhelp_echo) |
| 3335 | && (last_help = Fcar_safe (Fcdr_safe (XCDR (ev2))), EQ (last_help, help))) |
| 3336 | recorded = -1; |
| 3337 | else if (CONSP (ev1) && EQ (XCAR (ev1), Qmouse_movement) |
| 3338 | && CONSP (ev2) && EQ (XCAR (ev2), Qmouse_movement) |
| 3339 | && CONSP (ev3) && EQ (XCAR (ev3), Qhelp_echo) |
| 3340 | && (last_help = Fcar_safe (Fcdr_safe (XCDR (ev3))), EQ (last_help, help))) |
| 3341 | recorded = -2; |
| 3342 | } |
| 3343 | else if (EQ (XCAR (c), Qmouse_movement)) |
| 3344 | { |
| 3345 | /* Only record one pair of `mouse-movement' on a window in recent_keys. |
| 3346 | So additional mouse movement events replace the last element. */ |
| 3347 | Lisp_Object last_window, window; |
| 3348 | |
| 3349 | window = Fcar_safe (Fcar_safe (XCDR (c))); |
| 3350 | if (CONSP (ev1) && EQ (XCAR (ev1), Qmouse_movement) |
| 3351 | && (last_window = Fcar_safe (Fcar_safe (XCDR (ev1))), EQ (last_window, window)) |
| 3352 | && CONSP (ev2) && EQ (XCAR (ev2), Qmouse_movement) |
| 3353 | && (last_window = Fcar_safe (Fcar_safe (XCDR (ev2))), EQ (last_window, window))) |
| 3354 | { |
| 3355 | ASET (recent_keys, ix1, c); |
| 3356 | recorded = 1; |
| 3357 | } |
| 3358 | } |
| 3359 | } |
| 3360 | else |
| 3361 | store_kbd_macro_char (c); |
| 3362 | |
| 3363 | if (!recorded) |
| 3364 | { |
| 3365 | total_keys++; |
| 3366 | ASET (recent_keys, recent_keys_index, c); |
| 3367 | if (++recent_keys_index >= NUM_RECENT_KEYS) |
| 3368 | recent_keys_index = 0; |
| 3369 | } |
| 3370 | else if (recorded < 0) |
| 3371 | { |
| 3372 | /* We need to remove one or two events from recent_keys. |
| 3373 | To do this, we simply put nil at those events and move the |
| 3374 | recent_keys_index backwards over those events. Usually, |
| 3375 | users will never see those nil events, as they will be |
| 3376 | overwritten by the command keys entered to see recent_keys |
| 3377 | (e.g. C-h l). */ |
| 3378 | |
| 3379 | while (recorded++ < 0 && total_keys > 0) |
| 3380 | { |
| 3381 | if (total_keys < NUM_RECENT_KEYS) |
| 3382 | total_keys--; |
| 3383 | if (--recent_keys_index < 0) |
| 3384 | recent_keys_index = NUM_RECENT_KEYS - 1; |
| 3385 | ASET (recent_keys, recent_keys_index, Qnil); |
| 3386 | } |
| 3387 | } |
| 3388 | |
| 3389 | num_nonmacro_input_events++; |
| 3390 | |
| 3391 | /* Write c to the dribble file. If c is a lispy event, write |
| 3392 | the event's symbol to the dribble file, in <brackets>. Bleaugh. |
| 3393 | If you, dear reader, have a better idea, you've got the source. :-) */ |
| 3394 | if (dribble) |
| 3395 | { |
| 3396 | if (INTEGERP (c)) |
| 3397 | { |
| 3398 | if (XUINT (c) < 0x100) |
| 3399 | putc (XINT (c), dribble); |
| 3400 | else |
| 3401 | fprintf (dribble, " 0x%x", (int) XUINT (c)); |
| 3402 | } |
| 3403 | else |
| 3404 | { |
| 3405 | Lisp_Object dribblee; |
| 3406 | |
| 3407 | /* If it's a structured event, take the event header. */ |
| 3408 | dribblee = EVENT_HEAD (c); |
| 3409 | |
| 3410 | if (SYMBOLP (dribblee)) |
| 3411 | { |
| 3412 | putc ('<', dribble); |
| 3413 | fwrite (SDATA (SYMBOL_NAME (dribblee)), sizeof (char), |
| 3414 | SBYTES (SYMBOL_NAME (dribblee)), |
| 3415 | dribble); |
| 3416 | putc ('>', dribble); |
| 3417 | } |
| 3418 | } |
| 3419 | |
| 3420 | fflush (dribble); |
| 3421 | } |
| 3422 | } |
| 3423 | |
| 3424 | Lisp_Object |
| 3425 | print_help (object) |
| 3426 | Lisp_Object object; |
| 3427 | { |
| 3428 | struct buffer *old = current_buffer; |
| 3429 | Fprinc (object, Qnil); |
| 3430 | set_buffer_internal (XBUFFER (Vstandard_output)); |
| 3431 | call0 (intern ("help-mode")); |
| 3432 | set_buffer_internal (old); |
| 3433 | return Qnil; |
| 3434 | } |
| 3435 | |
| 3436 | /* Copy out or in the info on where C-g should throw to. |
| 3437 | This is used when running Lisp code from within get_char, |
| 3438 | in case get_char is called recursively. |
| 3439 | See read_process_output. */ |
| 3440 | |
| 3441 | static void |
| 3442 | save_getcjmp (temp) |
| 3443 | jmp_buf temp; |
| 3444 | { |
| 3445 | bcopy (getcjmp, temp, sizeof getcjmp); |
| 3446 | } |
| 3447 | |
| 3448 | static void |
| 3449 | restore_getcjmp (temp) |
| 3450 | jmp_buf temp; |
| 3451 | { |
| 3452 | bcopy (temp, getcjmp, sizeof getcjmp); |
| 3453 | } |
| 3454 | \f |
| 3455 | #ifdef HAVE_MOUSE |
| 3456 | |
| 3457 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
| 3458 | of this function. */ |
| 3459 | |
| 3460 | static Lisp_Object |
| 3461 | tracking_off (old_value) |
| 3462 | Lisp_Object old_value; |
| 3463 | { |
| 3464 | do_mouse_tracking = old_value; |
| 3465 | if (NILP (old_value)) |
| 3466 | { |
| 3467 | /* Redisplay may have been preempted because there was input |
| 3468 | available, and it assumes it will be called again after the |
| 3469 | input has been processed. If the only input available was |
| 3470 | the sort that we have just disabled, then we need to call |
| 3471 | redisplay. */ |
| 3472 | if (!readable_events (READABLE_EVENTS_DO_TIMERS_NOW)) |
| 3473 | { |
| 3474 | redisplay_preserve_echo_area (6); |
| 3475 | get_input_pending (&input_pending, |
| 3476 | READABLE_EVENTS_DO_TIMERS_NOW); |
| 3477 | } |
| 3478 | } |
| 3479 | return Qnil; |
| 3480 | } |
| 3481 | |
| 3482 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, |
| 3483 | doc: /* Evaluate BODY with mouse movement events enabled. |
| 3484 | Within a `track-mouse' form, mouse motion generates input events that |
| 3485 | you can read with `read-event'. |
| 3486 | Normally, mouse motion is ignored. |
| 3487 | usage: (track-mouse BODY ...) */) |
| 3488 | (args) |
| 3489 | Lisp_Object args; |
| 3490 | { |
| 3491 | int count = SPECPDL_INDEX (); |
| 3492 | Lisp_Object val; |
| 3493 | |
| 3494 | record_unwind_protect (tracking_off, do_mouse_tracking); |
| 3495 | |
| 3496 | do_mouse_tracking = Qt; |
| 3497 | |
| 3498 | val = Fprogn (args); |
| 3499 | return unbind_to (count, val); |
| 3500 | } |
| 3501 | |
| 3502 | /* If mouse has moved on some frame, return one of those frames. |
| 3503 | Return 0 otherwise. */ |
| 3504 | |
| 3505 | static FRAME_PTR |
| 3506 | some_mouse_moved () |
| 3507 | { |
| 3508 | Lisp_Object tail, frame; |
| 3509 | |
| 3510 | FOR_EACH_FRAME (tail, frame) |
| 3511 | { |
| 3512 | if (XFRAME (frame)->mouse_moved) |
| 3513 | return XFRAME (frame); |
| 3514 | } |
| 3515 | |
| 3516 | return 0; |
| 3517 | } |
| 3518 | |
| 3519 | #endif /* HAVE_MOUSE */ |
| 3520 | \f |
| 3521 | /* Low level keyboard/mouse input. |
| 3522 | kbd_buffer_store_event places events in kbd_buffer, and |
| 3523 | kbd_buffer_get_event retrieves them. */ |
| 3524 | |
| 3525 | /* Return true iff there are any events in the queue that read-char |
| 3526 | would return. If this returns false, a read-char would block. */ |
| 3527 | static int |
| 3528 | readable_events (flags) |
| 3529 | int flags; |
| 3530 | { |
| 3531 | if (flags & READABLE_EVENTS_DO_TIMERS_NOW) |
| 3532 | timer_check (1); |
| 3533 | |
| 3534 | /* If the buffer contains only FOCUS_IN_EVENT events, and |
| 3535 | READABLE_EVENTS_FILTER_EVENTS is set, report it as empty. */ |
| 3536 | if (kbd_fetch_ptr != kbd_store_ptr) |
| 3537 | { |
| 3538 | if (flags & (READABLE_EVENTS_FILTER_EVENTS |
| 3539 | #ifdef USE_TOOLKIT_SCROLL_BARS |
| 3540 | | READABLE_EVENTS_IGNORE_SQUEEZABLES |
| 3541 | #endif |
| 3542 | )) |
| 3543 | { |
| 3544 | struct input_event *event; |
| 3545 | |
| 3546 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
| 3547 | ? kbd_fetch_ptr |
| 3548 | : kbd_buffer); |
| 3549 | |
| 3550 | do |
| 3551 | { |
| 3552 | if (!( |
| 3553 | #ifdef USE_TOOLKIT_SCROLL_BARS |
| 3554 | (flags & READABLE_EVENTS_FILTER_EVENTS) && |
| 3555 | #endif |
| 3556 | event->kind == FOCUS_IN_EVENT) |
| 3557 | #ifdef USE_TOOLKIT_SCROLL_BARS |
| 3558 | && !((flags & READABLE_EVENTS_IGNORE_SQUEEZABLES) |
| 3559 | && event->kind == SCROLL_BAR_CLICK_EVENT |
| 3560 | && event->part == scroll_bar_handle |
| 3561 | && event->modifiers == 0) |
| 3562 | #endif |
| 3563 | ) |
| 3564 | return 1; |
| 3565 | event++; |
| 3566 | if (event == kbd_buffer + KBD_BUFFER_SIZE) |
| 3567 | event = kbd_buffer; |
| 3568 | } |
| 3569 | while (event != kbd_store_ptr); |
| 3570 | } |
| 3571 | else |
| 3572 | return 1; |
| 3573 | } |
| 3574 | |
| 3575 | #ifdef HAVE_MOUSE |
| 3576 | if (!(flags & READABLE_EVENTS_IGNORE_SQUEEZABLES) |
| 3577 | && !NILP (do_mouse_tracking) && some_mouse_moved ()) |
| 3578 | return 1; |
| 3579 | #endif |
| 3580 | if (single_kboard) |
| 3581 | { |
| 3582 | if (current_kboard->kbd_queue_has_data) |
| 3583 | return 1; |
| 3584 | } |
| 3585 | else |
| 3586 | { |
| 3587 | KBOARD *kb; |
| 3588 | for (kb = all_kboards; kb; kb = kb->next_kboard) |
| 3589 | if (kb->kbd_queue_has_data) |
| 3590 | return 1; |
| 3591 | } |
| 3592 | return 0; |
| 3593 | } |
| 3594 | |
| 3595 | /* Set this for debugging, to have a way to get out */ |
| 3596 | int stop_character; |
| 3597 | |
| 3598 | #ifdef MULTI_KBOARD |
| 3599 | static KBOARD * |
| 3600 | event_to_kboard (event) |
| 3601 | struct input_event *event; |
| 3602 | { |
| 3603 | Lisp_Object frame; |
| 3604 | frame = event->frame_or_window; |
| 3605 | if (CONSP (frame)) |
| 3606 | frame = XCAR (frame); |
| 3607 | else if (WINDOWP (frame)) |
| 3608 | frame = WINDOW_FRAME (XWINDOW (frame)); |
| 3609 | |
| 3610 | /* There are still some events that don't set this field. |
| 3611 | For now, just ignore the problem. |
| 3612 | Also ignore dead frames here. */ |
| 3613 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) |
| 3614 | return 0; |
| 3615 | else |
| 3616 | return FRAME_KBOARD (XFRAME (frame)); |
| 3617 | } |
| 3618 | #endif |
| 3619 | |
| 3620 | |
| 3621 | Lisp_Object Vthrow_on_input; |
| 3622 | |
| 3623 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
| 3624 | |
| 3625 | void |
| 3626 | kbd_buffer_store_event (event) |
| 3627 | register struct input_event *event; |
| 3628 | { |
| 3629 | kbd_buffer_store_event_hold (event, 0); |
| 3630 | } |
| 3631 | |
| 3632 | /* Store EVENT obtained at interrupt level into kbd_buffer, fifo. |
| 3633 | |
| 3634 | If HOLD_QUIT is 0, just stuff EVENT into the fifo. |
| 3635 | Else, if HOLD_QUIT.kind != NO_EVENT, discard EVENT. |
| 3636 | Else, if EVENT is a quit event, store the quit event |
| 3637 | in HOLD_QUIT, and return (thus ignoring further events). |
| 3638 | |
| 3639 | This is used in read_avail_input to postpone the processing |
| 3640 | of the quit event until all subsequent input events have been |
| 3641 | parsed (and discarded). |
| 3642 | */ |
| 3643 | |
| 3644 | void |
| 3645 | kbd_buffer_store_event_hold (event, hold_quit) |
| 3646 | register struct input_event *event; |
| 3647 | struct input_event *hold_quit; |
| 3648 | { |
| 3649 | if (event->kind == NO_EVENT) |
| 3650 | abort (); |
| 3651 | |
| 3652 | if (hold_quit && hold_quit->kind != NO_EVENT) |
| 3653 | return; |
| 3654 | |
| 3655 | if (event->kind == ASCII_KEYSTROKE_EVENT) |
| 3656 | { |
| 3657 | register int c = event->code & 0377; |
| 3658 | |
| 3659 | if (event->modifiers & ctrl_modifier) |
| 3660 | c = make_ctrl_char (c); |
| 3661 | |
| 3662 | c |= (event->modifiers |
| 3663 | & (meta_modifier | alt_modifier |
| 3664 | | hyper_modifier | super_modifier)); |
| 3665 | |
| 3666 | if (c == quit_char) |
| 3667 | { |
| 3668 | #ifdef MULTI_KBOARD |
| 3669 | KBOARD *kb; |
| 3670 | struct input_event *sp; |
| 3671 | |
| 3672 | if (single_kboard |
| 3673 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
| 3674 | kb != current_kboard)) |
| 3675 | { |
| 3676 | kb->kbd_queue |
| 3677 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
| 3678 | Fcons (make_number (c), Qnil)); |
| 3679 | kb->kbd_queue_has_data = 1; |
| 3680 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
| 3681 | { |
| 3682 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) |
| 3683 | sp = kbd_buffer; |
| 3684 | |
| 3685 | if (event_to_kboard (sp) == kb) |
| 3686 | { |
| 3687 | sp->kind = NO_EVENT; |
| 3688 | sp->frame_or_window = Qnil; |
| 3689 | sp->arg = Qnil; |
| 3690 | } |
| 3691 | } |
| 3692 | return; |
| 3693 | } |
| 3694 | #endif |
| 3695 | |
| 3696 | if (hold_quit) |
| 3697 | { |
| 3698 | bcopy (event, (char *) hold_quit, sizeof (*event)); |
| 3699 | return; |
| 3700 | } |
| 3701 | |
| 3702 | /* If this results in a quit_char being returned to Emacs as |
| 3703 | input, set Vlast_event_frame properly. If this doesn't |
| 3704 | get returned to Emacs as an event, the next event read |
| 3705 | will set Vlast_event_frame again, so this is safe to do. */ |
| 3706 | { |
| 3707 | Lisp_Object focus; |
| 3708 | |
| 3709 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
| 3710 | if (NILP (focus)) |
| 3711 | focus = event->frame_or_window; |
| 3712 | internal_last_event_frame = focus; |
| 3713 | Vlast_event_frame = focus; |
| 3714 | } |
| 3715 | |
| 3716 | last_event_timestamp = event->timestamp; |
| 3717 | interrupt_signal (0 /* dummy */); |
| 3718 | return; |
| 3719 | } |
| 3720 | |
| 3721 | if (c && c == stop_character) |
| 3722 | { |
| 3723 | sys_suspend (); |
| 3724 | return; |
| 3725 | } |
| 3726 | } |
| 3727 | /* Don't insert two BUFFER_SWITCH_EVENT's in a row. |
| 3728 | Just ignore the second one. */ |
| 3729 | else if (event->kind == BUFFER_SWITCH_EVENT |
| 3730 | && kbd_fetch_ptr != kbd_store_ptr |
| 3731 | && ((kbd_store_ptr == kbd_buffer |
| 3732 | ? kbd_buffer + KBD_BUFFER_SIZE - 1 |
| 3733 | : kbd_store_ptr - 1)->kind) == BUFFER_SWITCH_EVENT) |
| 3734 | return; |
| 3735 | |
| 3736 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
| 3737 | kbd_store_ptr = kbd_buffer; |
| 3738 | |
| 3739 | /* Don't let the very last slot in the buffer become full, |
| 3740 | since that would make the two pointers equal, |
| 3741 | and that is indistinguishable from an empty buffer. |
| 3742 | Discard the event if it would fill the last slot. */ |
| 3743 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
| 3744 | { |
| 3745 | *kbd_store_ptr = *event; |
| 3746 | ++kbd_store_ptr; |
| 3747 | } |
| 3748 | |
| 3749 | /* If we're inside while-no-input, and this event qualifies |
| 3750 | as input, set quit-flag to cause an interrupt. */ |
| 3751 | if (!NILP (Vthrow_on_input) |
| 3752 | && event->kind != FOCUS_IN_EVENT |
| 3753 | && event->kind != HELP_EVENT |
| 3754 | && event->kind != DEICONIFY_EVENT) |
| 3755 | { |
| 3756 | Vquit_flag = Vthrow_on_input; |
| 3757 | /* If we're inside a function that wants immediate quits, |
| 3758 | do it now. */ |
| 3759 | if (immediate_quit && NILP (Vinhibit_quit)) |
| 3760 | { |
| 3761 | immediate_quit = 0; |
| 3762 | sigfree (); |
| 3763 | QUIT; |
| 3764 | } |
| 3765 | } |
| 3766 | } |
| 3767 | |
| 3768 | |
| 3769 | /* Put an input event back in the head of the event queue. */ |
| 3770 | |
| 3771 | void |
| 3772 | kbd_buffer_unget_event (event) |
| 3773 | register struct input_event *event; |
| 3774 | { |
| 3775 | if (kbd_fetch_ptr == kbd_buffer) |
| 3776 | kbd_fetch_ptr = kbd_buffer + KBD_BUFFER_SIZE; |
| 3777 | |
| 3778 | /* Don't let the very last slot in the buffer become full, */ |
| 3779 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
| 3780 | { |
| 3781 | --kbd_fetch_ptr; |
| 3782 | *kbd_fetch_ptr = *event; |
| 3783 | } |
| 3784 | } |
| 3785 | |
| 3786 | |
| 3787 | /* Generate HELP_EVENT input_events in BUFP which has room for |
| 3788 | SIZE events. If there's not enough room in BUFP, ignore this |
| 3789 | event. |
| 3790 | |
| 3791 | HELP is the help form. |
| 3792 | |
| 3793 | FRAME is the frame on which the help is generated. OBJECT is the |
| 3794 | Lisp object where the help was found (a buffer, a string, an |
| 3795 | overlay, or nil if neither from a string nor from a buffer. POS is |
| 3796 | the position within OBJECT where the help was found. |
| 3797 | |
| 3798 | Value is the number of input_events generated. */ |
| 3799 | |
| 3800 | void |
| 3801 | gen_help_event (help, frame, window, object, pos) |
| 3802 | Lisp_Object help, frame, object, window; |
| 3803 | int pos; |
| 3804 | { |
| 3805 | struct input_event event; |
| 3806 | |
| 3807 | EVENT_INIT (event); |
| 3808 | |
| 3809 | event.kind = HELP_EVENT; |
| 3810 | event.frame_or_window = frame; |
| 3811 | event.arg = object; |
| 3812 | event.x = WINDOWP (window) ? window : frame; |
| 3813 | event.y = help; |
| 3814 | event.code = pos; |
| 3815 | kbd_buffer_store_event (&event); |
| 3816 | } |
| 3817 | |
| 3818 | |
| 3819 | /* Store HELP_EVENTs for HELP on FRAME in the input queue. */ |
| 3820 | |
| 3821 | void |
| 3822 | kbd_buffer_store_help_event (frame, help) |
| 3823 | Lisp_Object frame, help; |
| 3824 | { |
| 3825 | struct input_event event; |
| 3826 | |
| 3827 | event.kind = HELP_EVENT; |
| 3828 | event.frame_or_window = frame; |
| 3829 | event.arg = Qnil; |
| 3830 | event.x = Qnil; |
| 3831 | event.y = help; |
| 3832 | event.code = 0; |
| 3833 | kbd_buffer_store_event (&event); |
| 3834 | } |
| 3835 | |
| 3836 | \f |
| 3837 | /* Discard any mouse events in the event buffer by setting them to |
| 3838 | NO_EVENT. */ |
| 3839 | void |
| 3840 | discard_mouse_events () |
| 3841 | { |
| 3842 | struct input_event *sp; |
| 3843 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
| 3844 | { |
| 3845 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) |
| 3846 | sp = kbd_buffer; |
| 3847 | |
| 3848 | if (sp->kind == MOUSE_CLICK_EVENT |
| 3849 | || sp->kind == WHEEL_EVENT |
| 3850 | #ifdef WINDOWSNT |
| 3851 | || sp->kind == W32_SCROLL_BAR_CLICK_EVENT |
| 3852 | #endif |
| 3853 | || sp->kind == SCROLL_BAR_CLICK_EVENT) |
| 3854 | { |
| 3855 | sp->kind = NO_EVENT; |
| 3856 | } |
| 3857 | } |
| 3858 | } |
| 3859 | |
| 3860 | |
| 3861 | /* Return non-zero if there are any real events waiting in the event |
| 3862 | buffer, not counting `NO_EVENT's. |
| 3863 | |
| 3864 | If DISCARD is non-zero, discard NO_EVENT events at the front of |
| 3865 | the input queue, possibly leaving the input queue empty if there |
| 3866 | are no real input events. */ |
| 3867 | |
| 3868 | int |
| 3869 | kbd_buffer_events_waiting (discard) |
| 3870 | int discard; |
| 3871 | { |
| 3872 | struct input_event *sp; |
| 3873 | |
| 3874 | for (sp = kbd_fetch_ptr; |
| 3875 | sp != kbd_store_ptr && sp->kind == NO_EVENT; |
| 3876 | ++sp) |
| 3877 | { |
| 3878 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) |
| 3879 | sp = kbd_buffer; |
| 3880 | } |
| 3881 | |
| 3882 | if (discard) |
| 3883 | kbd_fetch_ptr = sp; |
| 3884 | |
| 3885 | return sp != kbd_store_ptr && sp->kind != NO_EVENT; |
| 3886 | } |
| 3887 | |
| 3888 | \f |
| 3889 | /* Clear input event EVENT. */ |
| 3890 | |
| 3891 | static INLINE void |
| 3892 | clear_event (event) |
| 3893 | struct input_event *event; |
| 3894 | { |
| 3895 | event->kind = NO_EVENT; |
| 3896 | } |
| 3897 | |
| 3898 | |
| 3899 | /* Read one event from the event buffer, waiting if necessary. |
| 3900 | The value is a Lisp object representing the event. |
| 3901 | The value is nil for an event that should be ignored, |
| 3902 | or that was handled here. |
| 3903 | We always read and discard one event. */ |
| 3904 | |
| 3905 | static Lisp_Object |
| 3906 | kbd_buffer_get_event (kbp, used_mouse_menu, end_time) |
| 3907 | KBOARD **kbp; |
| 3908 | int *used_mouse_menu; |
| 3909 | EMACS_TIME *end_time; |
| 3910 | { |
| 3911 | register int c; |
| 3912 | Lisp_Object obj; |
| 3913 | |
| 3914 | if (noninteractive) |
| 3915 | { |
| 3916 | c = getchar (); |
| 3917 | XSETINT (obj, c); |
| 3918 | *kbp = current_kboard; |
| 3919 | return obj; |
| 3920 | } |
| 3921 | |
| 3922 | /* Wait until there is input available. */ |
| 3923 | for (;;) |
| 3924 | { |
| 3925 | if (kbd_fetch_ptr != kbd_store_ptr) |
| 3926 | break; |
| 3927 | #ifdef HAVE_MOUSE |
| 3928 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
| 3929 | break; |
| 3930 | #endif |
| 3931 | |
| 3932 | /* If the quit flag is set, then read_char will return |
| 3933 | quit_char, so that counts as "available input." */ |
| 3934 | if (!NILP (Vquit_flag)) |
| 3935 | quit_throw_to_read_char (); |
| 3936 | |
| 3937 | /* One way or another, wait until input is available; then, if |
| 3938 | interrupt handlers have not read it, read it now. */ |
| 3939 | |
| 3940 | #ifdef OLDVMS |
| 3941 | wait_for_kbd_input (); |
| 3942 | #else |
| 3943 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
| 3944 | #ifdef SIGIO |
| 3945 | gobble_input (0); |
| 3946 | #endif /* SIGIO */ |
| 3947 | if (kbd_fetch_ptr != kbd_store_ptr) |
| 3948 | break; |
| 3949 | #ifdef HAVE_MOUSE |
| 3950 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
| 3951 | break; |
| 3952 | #endif |
| 3953 | if (end_time) |
| 3954 | { |
| 3955 | EMACS_TIME duration; |
| 3956 | EMACS_GET_TIME (duration); |
| 3957 | if (EMACS_TIME_GE (duration, *end_time)) |
| 3958 | return Qnil; /* finished waiting */ |
| 3959 | else |
| 3960 | { |
| 3961 | EMACS_SUB_TIME (duration, *end_time, duration); |
| 3962 | wait_reading_process_output (EMACS_SECS (duration), |
| 3963 | EMACS_USECS (duration), |
| 3964 | -1, 1, Qnil, NULL, 0); |
| 3965 | } |
| 3966 | } |
| 3967 | else |
| 3968 | wait_reading_process_output (0, 0, -1, 1, Qnil, NULL, 0); |
| 3969 | |
| 3970 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
| 3971 | /* Pass 1 for EXPECT since we just waited to have input. */ |
| 3972 | read_avail_input (1); |
| 3973 | #endif /* not VMS */ |
| 3974 | } |
| 3975 | |
| 3976 | if (CONSP (Vunread_command_events)) |
| 3977 | { |
| 3978 | Lisp_Object first; |
| 3979 | first = XCAR (Vunread_command_events); |
| 3980 | Vunread_command_events = XCDR (Vunread_command_events); |
| 3981 | *kbp = current_kboard; |
| 3982 | return first; |
| 3983 | } |
| 3984 | |
| 3985 | /* At this point, we know that there is a readable event available |
| 3986 | somewhere. If the event queue is empty, then there must be a |
| 3987 | mouse movement enabled and available. */ |
| 3988 | if (kbd_fetch_ptr != kbd_store_ptr) |
| 3989 | { |
| 3990 | struct input_event *event; |
| 3991 | |
| 3992 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
| 3993 | ? kbd_fetch_ptr |
| 3994 | : kbd_buffer); |
| 3995 | |
| 3996 | last_event_timestamp = event->timestamp; |
| 3997 | |
| 3998 | #ifdef MULTI_KBOARD |
| 3999 | *kbp = event_to_kboard (event); |
| 4000 | if (*kbp == 0) |
| 4001 | *kbp = current_kboard; /* Better than returning null ptr? */ |
| 4002 | #else |
| 4003 | *kbp = &the_only_kboard; |
| 4004 | #endif |
| 4005 | |
| 4006 | obj = Qnil; |
| 4007 | |
| 4008 | /* These two kinds of events get special handling |
| 4009 | and don't actually appear to the command loop. |
| 4010 | We return nil for them. */ |
| 4011 | if (event->kind == SELECTION_REQUEST_EVENT |
| 4012 | || event->kind == SELECTION_CLEAR_EVENT) |
| 4013 | { |
| 4014 | #ifdef HAVE_X11 |
| 4015 | struct input_event copy; |
| 4016 | |
| 4017 | /* Remove it from the buffer before processing it, |
| 4018 | since otherwise swallow_events will see it |
| 4019 | and process it again. */ |
| 4020 | copy = *event; |
| 4021 | kbd_fetch_ptr = event + 1; |
| 4022 | input_pending = readable_events (0); |
| 4023 | x_handle_selection_event (©); |
| 4024 | #else |
| 4025 | /* We're getting selection request events, but we don't have |
| 4026 | a window system. */ |
| 4027 | abort (); |
| 4028 | #endif |
| 4029 | } |
| 4030 | |
| 4031 | #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS) |
| 4032 | else if (event->kind == DELETE_WINDOW_EVENT) |
| 4033 | { |
| 4034 | /* Make an event (delete-frame (FRAME)). */ |
| 4035 | obj = Fcons (event->frame_or_window, Qnil); |
| 4036 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
| 4037 | kbd_fetch_ptr = event + 1; |
| 4038 | } |
| 4039 | #endif |
| 4040 | #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS) |
| 4041 | else if (event->kind == ICONIFY_EVENT) |
| 4042 | { |
| 4043 | /* Make an event (iconify-frame (FRAME)). */ |
| 4044 | obj = Fcons (event->frame_or_window, Qnil); |
| 4045 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); |
| 4046 | kbd_fetch_ptr = event + 1; |
| 4047 | } |
| 4048 | else if (event->kind == DEICONIFY_EVENT) |
| 4049 | { |
| 4050 | /* Make an event (make-frame-visible (FRAME)). */ |
| 4051 | obj = Fcons (event->frame_or_window, Qnil); |
| 4052 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); |
| 4053 | kbd_fetch_ptr = event + 1; |
| 4054 | } |
| 4055 | #endif |
| 4056 | else if (event->kind == BUFFER_SWITCH_EVENT) |
| 4057 | { |
| 4058 | /* The value doesn't matter here; only the type is tested. */ |
| 4059 | XSETBUFFER (obj, current_buffer); |
| 4060 | kbd_fetch_ptr = event + 1; |
| 4061 | } |
| 4062 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \ |
| 4063 | || defined (USE_GTK) |
| 4064 | else if (event->kind == MENU_BAR_ACTIVATE_EVENT) |
| 4065 | { |
| 4066 | kbd_fetch_ptr = event + 1; |
| 4067 | input_pending = readable_events (0); |
| 4068 | if (FRAME_LIVE_P (XFRAME (event->frame_or_window))) |
| 4069 | x_activate_menubar (XFRAME (event->frame_or_window)); |
| 4070 | } |
| 4071 | #endif |
| 4072 | #if defined (WINDOWSNT) || defined (MAC_OS) |
| 4073 | else if (event->kind == LANGUAGE_CHANGE_EVENT) |
| 4074 | { |
| 4075 | #ifdef MAC_OS |
| 4076 | /* Make an event (language-change (KEY_SCRIPT)). */ |
| 4077 | obj = Fcons (make_number (event->code), Qnil); |
| 4078 | #else |
| 4079 | /* Make an event (language-change (FRAME CHARSET LCID)). */ |
| 4080 | obj = Fcons (event->frame_or_window, Qnil); |
| 4081 | #endif |
| 4082 | obj = Fcons (Qlanguage_change, Fcons (obj, Qnil)); |
| 4083 | kbd_fetch_ptr = event + 1; |
| 4084 | } |
| 4085 | #endif |
| 4086 | else if (event->kind == SAVE_SESSION_EVENT) |
| 4087 | { |
| 4088 | obj = Fcons (Qsave_session, Qnil); |
| 4089 | kbd_fetch_ptr = event + 1; |
| 4090 | } |
| 4091 | /* Just discard these, by returning nil. |
| 4092 | With MULTI_KBOARD, these events are used as placeholders |
| 4093 | when we need to randomly delete events from the queue. |
| 4094 | (They shouldn't otherwise be found in the buffer, |
| 4095 | but on some machines it appears they do show up |
| 4096 | even without MULTI_KBOARD.) */ |
| 4097 | /* On Windows NT/9X, NO_EVENT is used to delete extraneous |
| 4098 | mouse events during a popup-menu call. */ |
| 4099 | else if (event->kind == NO_EVENT) |
| 4100 | kbd_fetch_ptr = event + 1; |
| 4101 | else if (event->kind == HELP_EVENT) |
| 4102 | { |
| 4103 | Lisp_Object object, position, help, frame, window; |
| 4104 | |
| 4105 | frame = event->frame_or_window; |
| 4106 | object = event->arg; |
| 4107 | position = make_number (event->code); |
| 4108 | window = event->x; |
| 4109 | help = event->y; |
| 4110 | clear_event (event); |
| 4111 | |
| 4112 | kbd_fetch_ptr = event + 1; |
| 4113 | if (!WINDOWP (window)) |
| 4114 | window = Qnil; |
| 4115 | obj = Fcons (Qhelp_echo, |
| 4116 | list5 (frame, help, window, object, position)); |
| 4117 | } |
| 4118 | else if (event->kind == FOCUS_IN_EVENT) |
| 4119 | { |
| 4120 | /* Notification of a FocusIn event. The frame receiving the |
| 4121 | focus is in event->frame_or_window. Generate a |
| 4122 | switch-frame event if necessary. */ |
| 4123 | Lisp_Object frame, focus; |
| 4124 | |
| 4125 | frame = event->frame_or_window; |
| 4126 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
| 4127 | if (FRAMEP (focus)) |
| 4128 | frame = focus; |
| 4129 | |
| 4130 | if (!EQ (frame, internal_last_event_frame) |
| 4131 | && !EQ (frame, selected_frame)) |
| 4132 | obj = make_lispy_switch_frame (frame); |
| 4133 | internal_last_event_frame = frame; |
| 4134 | kbd_fetch_ptr = event + 1; |
| 4135 | } |
| 4136 | else |
| 4137 | { |
| 4138 | /* If this event is on a different frame, return a switch-frame this |
| 4139 | time, and leave the event in the queue for next time. */ |
| 4140 | Lisp_Object frame; |
| 4141 | Lisp_Object focus; |
| 4142 | |
| 4143 | frame = event->frame_or_window; |
| 4144 | if (CONSP (frame)) |
| 4145 | frame = XCAR (frame); |
| 4146 | else if (WINDOWP (frame)) |
| 4147 | frame = WINDOW_FRAME (XWINDOW (frame)); |
| 4148 | |
| 4149 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
| 4150 | if (! NILP (focus)) |
| 4151 | frame = focus; |
| 4152 | |
| 4153 | if (! EQ (frame, internal_last_event_frame) |
| 4154 | && !EQ (frame, selected_frame)) |
| 4155 | obj = make_lispy_switch_frame (frame); |
| 4156 | internal_last_event_frame = frame; |
| 4157 | |
| 4158 | /* If we didn't decide to make a switch-frame event, go ahead |
| 4159 | and build a real event from the queue entry. */ |
| 4160 | |
| 4161 | if (NILP (obj)) |
| 4162 | { |
| 4163 | obj = make_lispy_event (event); |
| 4164 | |
| 4165 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined(MAC_OS) \ |
| 4166 | || defined (USE_GTK) |
| 4167 | /* If this was a menu selection, then set the flag to inhibit |
| 4168 | writing to last_nonmenu_event. Don't do this if the event |
| 4169 | we're returning is (menu-bar), though; that indicates the |
| 4170 | beginning of the menu sequence, and we might as well leave |
| 4171 | that as the `event with parameters' for this selection. */ |
| 4172 | if (used_mouse_menu |
| 4173 | && !EQ (event->frame_or_window, event->arg) |
| 4174 | && (event->kind == MENU_BAR_EVENT |
| 4175 | || event->kind == TOOL_BAR_EVENT)) |
| 4176 | *used_mouse_menu = 1; |
| 4177 | #endif |
| 4178 | |
| 4179 | /* Wipe out this event, to catch bugs. */ |
| 4180 | clear_event (event); |
| 4181 | kbd_fetch_ptr = event + 1; |
| 4182 | } |
| 4183 | } |
| 4184 | } |
| 4185 | #ifdef HAVE_MOUSE |
| 4186 | /* Try generating a mouse motion event. */ |
| 4187 | else if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
| 4188 | { |
| 4189 | FRAME_PTR f = some_mouse_moved (); |
| 4190 | Lisp_Object bar_window; |
| 4191 | enum scroll_bar_part part; |
| 4192 | Lisp_Object x, y; |
| 4193 | unsigned long time; |
| 4194 | |
| 4195 | *kbp = current_kboard; |
| 4196 | /* Note that this uses F to determine which display to look at. |
| 4197 | If there is no valid info, it does not store anything |
| 4198 | so x remains nil. */ |
| 4199 | x = Qnil; |
| 4200 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
| 4201 | |
| 4202 | obj = Qnil; |
| 4203 | |
| 4204 | /* Decide if we should generate a switch-frame event. Don't |
| 4205 | generate switch-frame events for motion outside of all Emacs |
| 4206 | frames. */ |
| 4207 | if (!NILP (x) && f) |
| 4208 | { |
| 4209 | Lisp_Object frame; |
| 4210 | |
| 4211 | frame = FRAME_FOCUS_FRAME (f); |
| 4212 | if (NILP (frame)) |
| 4213 | XSETFRAME (frame, f); |
| 4214 | |
| 4215 | if (! EQ (frame, internal_last_event_frame) |
| 4216 | && !EQ (frame, selected_frame)) |
| 4217 | obj = make_lispy_switch_frame (frame); |
| 4218 | internal_last_event_frame = frame; |
| 4219 | } |
| 4220 | |
| 4221 | /* If we didn't decide to make a switch-frame event, go ahead and |
| 4222 | return a mouse-motion event. */ |
| 4223 | if (!NILP (x) && NILP (obj)) |
| 4224 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
| 4225 | } |
| 4226 | #endif /* HAVE_MOUSE */ |
| 4227 | else |
| 4228 | /* We were promised by the above while loop that there was |
| 4229 | something for us to read! */ |
| 4230 | abort (); |
| 4231 | |
| 4232 | input_pending = readable_events (0); |
| 4233 | |
| 4234 | Vlast_event_frame = internal_last_event_frame; |
| 4235 | |
| 4236 | return (obj); |
| 4237 | } |
| 4238 | \f |
| 4239 | /* Process any events that are not user-visible, |
| 4240 | then return, without reading any user-visible events. */ |
| 4241 | |
| 4242 | void |
| 4243 | swallow_events (do_display) |
| 4244 | int do_display; |
| 4245 | { |
| 4246 | int old_timers_run; |
| 4247 | |
| 4248 | while (kbd_fetch_ptr != kbd_store_ptr) |
| 4249 | { |
| 4250 | struct input_event *event; |
| 4251 | |
| 4252 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
| 4253 | ? kbd_fetch_ptr |
| 4254 | : kbd_buffer); |
| 4255 | |
| 4256 | last_event_timestamp = event->timestamp; |
| 4257 | |
| 4258 | /* These two kinds of events get special handling |
| 4259 | and don't actually appear to the command loop. */ |
| 4260 | if (event->kind == SELECTION_REQUEST_EVENT |
| 4261 | || event->kind == SELECTION_CLEAR_EVENT) |
| 4262 | { |
| 4263 | #ifdef HAVE_X11 |
| 4264 | struct input_event copy; |
| 4265 | |
| 4266 | /* Remove it from the buffer before processing it, |
| 4267 | since otherwise swallow_events called recursively could see it |
| 4268 | and process it again. */ |
| 4269 | copy = *event; |
| 4270 | kbd_fetch_ptr = event + 1; |
| 4271 | input_pending = readable_events (0); |
| 4272 | x_handle_selection_event (©); |
| 4273 | #else |
| 4274 | /* We're getting selection request events, but we don't have |
| 4275 | a window system. */ |
| 4276 | abort (); |
| 4277 | #endif |
| 4278 | } |
| 4279 | else |
| 4280 | break; |
| 4281 | } |
| 4282 | |
| 4283 | old_timers_run = timers_run; |
| 4284 | get_input_pending (&input_pending, READABLE_EVENTS_DO_TIMERS_NOW); |
| 4285 | |
| 4286 | if (timers_run != old_timers_run && do_display) |
| 4287 | redisplay_preserve_echo_area (7); |
| 4288 | } |
| 4289 | \f |
| 4290 | /* Record the start of when Emacs is idle, |
| 4291 | for the sake of running idle-time timers. */ |
| 4292 | |
| 4293 | static void |
| 4294 | timer_start_idle () |
| 4295 | { |
| 4296 | Lisp_Object timers; |
| 4297 | |
| 4298 | /* If we are already in the idle state, do nothing. */ |
| 4299 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) |
| 4300 | return; |
| 4301 | |
| 4302 | EMACS_GET_TIME (timer_idleness_start_time); |
| 4303 | |
| 4304 | timer_last_idleness_start_time = timer_idleness_start_time; |
| 4305 | |
| 4306 | /* Mark all idle-time timers as once again candidates for running. */ |
| 4307 | for (timers = Vtimer_idle_list; CONSP (timers); timers = XCDR (timers)) |
| 4308 | { |
| 4309 | Lisp_Object timer; |
| 4310 | |
| 4311 | timer = XCAR (timers); |
| 4312 | |
| 4313 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
| 4314 | continue; |
| 4315 | XVECTOR (timer)->contents[0] = Qnil; |
| 4316 | } |
| 4317 | } |
| 4318 | |
| 4319 | /* Record that Emacs is no longer idle, so stop running idle-time timers. */ |
| 4320 | |
| 4321 | static void |
| 4322 | timer_stop_idle () |
| 4323 | { |
| 4324 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); |
| 4325 | } |
| 4326 | |
| 4327 | /* Resume idle timer from last idle start time. */ |
| 4328 | |
| 4329 | static void |
| 4330 | timer_resume_idle () |
| 4331 | { |
| 4332 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) |
| 4333 | return; |
| 4334 | |
| 4335 | timer_idleness_start_time = timer_last_idleness_start_time; |
| 4336 | } |
| 4337 | |
| 4338 | /* This is only for debugging. */ |
| 4339 | struct input_event last_timer_event; |
| 4340 | |
| 4341 | /* Check whether a timer has fired. To prevent larger problems we simply |
| 4342 | disregard elements that are not proper timers. Do not make a circular |
| 4343 | timer list for the time being. |
| 4344 | |
| 4345 | Returns the number of seconds to wait until the next timer fires. If a |
| 4346 | timer is triggering now, return zero seconds. |
| 4347 | If no timer is active, return -1 seconds. |
| 4348 | |
| 4349 | If a timer is ripe, we run it, with quitting turned off. |
| 4350 | |
| 4351 | DO_IT_NOW is now ignored. It used to mean that we should |
| 4352 | run the timer directly instead of queueing a timer-event. |
| 4353 | Now we always run timers directly. */ |
| 4354 | |
| 4355 | EMACS_TIME |
| 4356 | timer_check (do_it_now) |
| 4357 | int do_it_now; |
| 4358 | { |
| 4359 | EMACS_TIME nexttime; |
| 4360 | EMACS_TIME now, idleness_now; |
| 4361 | Lisp_Object timers, idle_timers, chosen_timer; |
| 4362 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 4363 | |
| 4364 | EMACS_SET_SECS (nexttime, -1); |
| 4365 | EMACS_SET_USECS (nexttime, -1); |
| 4366 | |
| 4367 | /* Always consider the ordinary timers. */ |
| 4368 | timers = Vtimer_list; |
| 4369 | /* Consider the idle timers only if Emacs is idle. */ |
| 4370 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) |
| 4371 | idle_timers = Vtimer_idle_list; |
| 4372 | else |
| 4373 | idle_timers = Qnil; |
| 4374 | chosen_timer = Qnil; |
| 4375 | GCPRO3 (timers, idle_timers, chosen_timer); |
| 4376 | |
| 4377 | if (CONSP (timers) || CONSP (idle_timers)) |
| 4378 | { |
| 4379 | EMACS_GET_TIME (now); |
| 4380 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) |
| 4381 | EMACS_SUB_TIME (idleness_now, now, timer_idleness_start_time); |
| 4382 | } |
| 4383 | |
| 4384 | while (CONSP (timers) || CONSP (idle_timers)) |
| 4385 | { |
| 4386 | Lisp_Object *vector; |
| 4387 | Lisp_Object timer = Qnil, idle_timer = Qnil; |
| 4388 | EMACS_TIME timer_time, idle_timer_time; |
| 4389 | EMACS_TIME difference, timer_difference, idle_timer_difference; |
| 4390 | |
| 4391 | /* Skip past invalid timers and timers already handled. */ |
| 4392 | if (!NILP (timers)) |
| 4393 | { |
| 4394 | timer = XCAR (timers); |
| 4395 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
| 4396 | { |
| 4397 | timers = XCDR (timers); |
| 4398 | continue; |
| 4399 | } |
| 4400 | vector = XVECTOR (timer)->contents; |
| 4401 | |
| 4402 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) |
| 4403 | || !INTEGERP (vector[3]) |
| 4404 | || ! NILP (vector[0])) |
| 4405 | { |
| 4406 | timers = XCDR (timers); |
| 4407 | continue; |
| 4408 | } |
| 4409 | } |
| 4410 | if (!NILP (idle_timers)) |
| 4411 | { |
| 4412 | timer = XCAR (idle_timers); |
| 4413 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
| 4414 | { |
| 4415 | idle_timers = XCDR (idle_timers); |
| 4416 | continue; |
| 4417 | } |
| 4418 | vector = XVECTOR (timer)->contents; |
| 4419 | |
| 4420 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) |
| 4421 | || !INTEGERP (vector[3]) |
| 4422 | || ! NILP (vector[0])) |
| 4423 | { |
| 4424 | idle_timers = XCDR (idle_timers); |
| 4425 | continue; |
| 4426 | } |
| 4427 | } |
| 4428 | |
| 4429 | /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE |
| 4430 | based on the next ordinary timer. |
| 4431 | TIMER_DIFFERENCE is the distance in time from NOW to when |
| 4432 | this timer becomes ripe (negative if it's already ripe). */ |
| 4433 | if (!NILP (timers)) |
| 4434 | { |
| 4435 | timer = XCAR (timers); |
| 4436 | vector = XVECTOR (timer)->contents; |
| 4437 | EMACS_SET_SECS (timer_time, |
| 4438 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); |
| 4439 | EMACS_SET_USECS (timer_time, XINT (vector[3])); |
| 4440 | EMACS_SUB_TIME (timer_difference, timer_time, now); |
| 4441 | } |
| 4442 | |
| 4443 | /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE |
| 4444 | based on the next idle timer. */ |
| 4445 | if (!NILP (idle_timers)) |
| 4446 | { |
| 4447 | idle_timer = XCAR (idle_timers); |
| 4448 | vector = XVECTOR (idle_timer)->contents; |
| 4449 | EMACS_SET_SECS (idle_timer_time, |
| 4450 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); |
| 4451 | EMACS_SET_USECS (idle_timer_time, XINT (vector[3])); |
| 4452 | EMACS_SUB_TIME (idle_timer_difference, idle_timer_time, idleness_now); |
| 4453 | } |
| 4454 | |
| 4455 | /* Decide which timer is the next timer, |
| 4456 | and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly. |
| 4457 | Also step down the list where we found that timer. */ |
| 4458 | |
| 4459 | if (! NILP (timers) && ! NILP (idle_timers)) |
| 4460 | { |
| 4461 | EMACS_TIME temp; |
| 4462 | EMACS_SUB_TIME (temp, timer_difference, idle_timer_difference); |
| 4463 | if (EMACS_TIME_NEG_P (temp)) |
| 4464 | { |
| 4465 | chosen_timer = timer; |
| 4466 | timers = XCDR (timers); |
| 4467 | difference = timer_difference; |
| 4468 | } |
| 4469 | else |
| 4470 | { |
| 4471 | chosen_timer = idle_timer; |
| 4472 | idle_timers = XCDR (idle_timers); |
| 4473 | difference = idle_timer_difference; |
| 4474 | } |
| 4475 | } |
| 4476 | else if (! NILP (timers)) |
| 4477 | { |
| 4478 | chosen_timer = timer; |
| 4479 | timers = XCDR (timers); |
| 4480 | difference = timer_difference; |
| 4481 | } |
| 4482 | else |
| 4483 | { |
| 4484 | chosen_timer = idle_timer; |
| 4485 | idle_timers = XCDR (idle_timers); |
| 4486 | difference = idle_timer_difference; |
| 4487 | } |
| 4488 | vector = XVECTOR (chosen_timer)->contents; |
| 4489 | |
| 4490 | /* If timer is ripe, run it if it hasn't been run. */ |
| 4491 | if (EMACS_TIME_NEG_P (difference) |
| 4492 | || (EMACS_SECS (difference) == 0 |
| 4493 | && EMACS_USECS (difference) == 0)) |
| 4494 | { |
| 4495 | if (NILP (vector[0])) |
| 4496 | { |
| 4497 | int was_locked = single_kboard; |
| 4498 | int count = SPECPDL_INDEX (); |
| 4499 | Lisp_Object old_deactivate_mark = Vdeactivate_mark; |
| 4500 | |
| 4501 | /* Mark the timer as triggered to prevent problems if the lisp |
| 4502 | code fails to reschedule it right. */ |
| 4503 | vector[0] = Qt; |
| 4504 | |
| 4505 | specbind (Qinhibit_quit, Qt); |
| 4506 | |
| 4507 | call1 (Qtimer_event_handler, chosen_timer); |
| 4508 | Vdeactivate_mark = old_deactivate_mark; |
| 4509 | timers_run++; |
| 4510 | unbind_to (count, Qnil); |
| 4511 | |
| 4512 | /* Resume allowing input from any kboard, if that was true before. */ |
| 4513 | if (!was_locked) |
| 4514 | any_kboard_state (); |
| 4515 | |
| 4516 | /* Since we have handled the event, |
| 4517 | we don't need to tell the caller to wake up and do it. */ |
| 4518 | } |
| 4519 | } |
| 4520 | else |
| 4521 | /* When we encounter a timer that is still waiting, |
| 4522 | return the amount of time to wait before it is ripe. */ |
| 4523 | { |
| 4524 | UNGCPRO; |
| 4525 | return difference; |
| 4526 | } |
| 4527 | } |
| 4528 | |
| 4529 | /* No timers are pending in the future. */ |
| 4530 | /* Return 0 if we generated an event, and -1 if not. */ |
| 4531 | UNGCPRO; |
| 4532 | return nexttime; |
| 4533 | } |
| 4534 | \f |
| 4535 | /* Caches for modify_event_symbol. */ |
| 4536 | static Lisp_Object accent_key_syms; |
| 4537 | static Lisp_Object func_key_syms; |
| 4538 | static Lisp_Object mouse_syms; |
| 4539 | static Lisp_Object wheel_syms; |
| 4540 | static Lisp_Object drag_n_drop_syms; |
| 4541 | |
| 4542 | /* This is a list of keysym codes for special "accent" characters. |
| 4543 | It parallels lispy_accent_keys. */ |
| 4544 | |
| 4545 | static int lispy_accent_codes[] = |
| 4546 | { |
| 4547 | #ifdef XK_dead_circumflex |
| 4548 | XK_dead_circumflex, |
| 4549 | #else |
| 4550 | 0, |
| 4551 | #endif |
| 4552 | #ifdef XK_dead_grave |
| 4553 | XK_dead_grave, |
| 4554 | #else |
| 4555 | 0, |
| 4556 | #endif |
| 4557 | #ifdef XK_dead_tilde |
| 4558 | XK_dead_tilde, |
| 4559 | #else |
| 4560 | 0, |
| 4561 | #endif |
| 4562 | #ifdef XK_dead_diaeresis |
| 4563 | XK_dead_diaeresis, |
| 4564 | #else |
| 4565 | 0, |
| 4566 | #endif |
| 4567 | #ifdef XK_dead_macron |
| 4568 | XK_dead_macron, |
| 4569 | #else |
| 4570 | 0, |
| 4571 | #endif |
| 4572 | #ifdef XK_dead_degree |
| 4573 | XK_dead_degree, |
| 4574 | #else |
| 4575 | 0, |
| 4576 | #endif |
| 4577 | #ifdef XK_dead_acute |
| 4578 | XK_dead_acute, |
| 4579 | #else |
| 4580 | 0, |
| 4581 | #endif |
| 4582 | #ifdef XK_dead_cedilla |
| 4583 | XK_dead_cedilla, |
| 4584 | #else |
| 4585 | 0, |
| 4586 | #endif |
| 4587 | #ifdef XK_dead_breve |
| 4588 | XK_dead_breve, |
| 4589 | #else |
| 4590 | 0, |
| 4591 | #endif |
| 4592 | #ifdef XK_dead_ogonek |
| 4593 | XK_dead_ogonek, |
| 4594 | #else |
| 4595 | 0, |
| 4596 | #endif |
| 4597 | #ifdef XK_dead_caron |
| 4598 | XK_dead_caron, |
| 4599 | #else |
| 4600 | 0, |
| 4601 | #endif |
| 4602 | #ifdef XK_dead_doubleacute |
| 4603 | XK_dead_doubleacute, |
| 4604 | #else |
| 4605 | 0, |
| 4606 | #endif |
| 4607 | #ifdef XK_dead_abovedot |
| 4608 | XK_dead_abovedot, |
| 4609 | #else |
| 4610 | 0, |
| 4611 | #endif |
| 4612 | #ifdef XK_dead_abovering |
| 4613 | XK_dead_abovering, |
| 4614 | #else |
| 4615 | 0, |
| 4616 | #endif |
| 4617 | #ifdef XK_dead_iota |
| 4618 | XK_dead_iota, |
| 4619 | #else |
| 4620 | 0, |
| 4621 | #endif |
| 4622 | #ifdef XK_dead_belowdot |
| 4623 | XK_dead_belowdot, |
| 4624 | #else |
| 4625 | 0, |
| 4626 | #endif |
| 4627 | #ifdef XK_dead_voiced_sound |
| 4628 | XK_dead_voiced_sound, |
| 4629 | #else |
| 4630 | 0, |
| 4631 | #endif |
| 4632 | #ifdef XK_dead_semivoiced_sound |
| 4633 | XK_dead_semivoiced_sound, |
| 4634 | #else |
| 4635 | 0, |
| 4636 | #endif |
| 4637 | #ifdef XK_dead_hook |
| 4638 | XK_dead_hook, |
| 4639 | #else |
| 4640 | 0, |
| 4641 | #endif |
| 4642 | #ifdef XK_dead_horn |
| 4643 | XK_dead_horn, |
| 4644 | #else |
| 4645 | 0, |
| 4646 | #endif |
| 4647 | }; |
| 4648 | |
| 4649 | /* This is a list of Lisp names for special "accent" characters. |
| 4650 | It parallels lispy_accent_codes. */ |
| 4651 | |
| 4652 | static char *lispy_accent_keys[] = |
| 4653 | { |
| 4654 | "dead-circumflex", |
| 4655 | "dead-grave", |
| 4656 | "dead-tilde", |
| 4657 | "dead-diaeresis", |
| 4658 | "dead-macron", |
| 4659 | "dead-degree", |
| 4660 | "dead-acute", |
| 4661 | "dead-cedilla", |
| 4662 | "dead-breve", |
| 4663 | "dead-ogonek", |
| 4664 | "dead-caron", |
| 4665 | "dead-doubleacute", |
| 4666 | "dead-abovedot", |
| 4667 | "dead-abovering", |
| 4668 | "dead-iota", |
| 4669 | "dead-belowdot", |
| 4670 | "dead-voiced-sound", |
| 4671 | "dead-semivoiced-sound", |
| 4672 | "dead-hook", |
| 4673 | "dead-horn", |
| 4674 | }; |
| 4675 | |
| 4676 | #ifdef HAVE_NTGUI |
| 4677 | #define FUNCTION_KEY_OFFSET 0x0 |
| 4678 | |
| 4679 | char *lispy_function_keys[] = |
| 4680 | { |
| 4681 | 0, /* 0 */ |
| 4682 | |
| 4683 | 0, /* VK_LBUTTON 0x01 */ |
| 4684 | 0, /* VK_RBUTTON 0x02 */ |
| 4685 | "cancel", /* VK_CANCEL 0x03 */ |
| 4686 | 0, /* VK_MBUTTON 0x04 */ |
| 4687 | |
| 4688 | 0, 0, 0, /* 0x05 .. 0x07 */ |
| 4689 | |
| 4690 | "backspace", /* VK_BACK 0x08 */ |
| 4691 | "tab", /* VK_TAB 0x09 */ |
| 4692 | |
| 4693 | 0, 0, /* 0x0A .. 0x0B */ |
| 4694 | |
| 4695 | "clear", /* VK_CLEAR 0x0C */ |
| 4696 | "return", /* VK_RETURN 0x0D */ |
| 4697 | |
| 4698 | 0, 0, /* 0x0E .. 0x0F */ |
| 4699 | |
| 4700 | 0, /* VK_SHIFT 0x10 */ |
| 4701 | 0, /* VK_CONTROL 0x11 */ |
| 4702 | 0, /* VK_MENU 0x12 */ |
| 4703 | "pause", /* VK_PAUSE 0x13 */ |
| 4704 | "capslock", /* VK_CAPITAL 0x14 */ |
| 4705 | |
| 4706 | 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */ |
| 4707 | |
| 4708 | "escape", /* VK_ESCAPE 0x1B */ |
| 4709 | |
| 4710 | 0, 0, 0, 0, /* 0x1C .. 0x1F */ |
| 4711 | |
| 4712 | 0, /* VK_SPACE 0x20 */ |
| 4713 | "prior", /* VK_PRIOR 0x21 */ |
| 4714 | "next", /* VK_NEXT 0x22 */ |
| 4715 | "end", /* VK_END 0x23 */ |
| 4716 | "home", /* VK_HOME 0x24 */ |
| 4717 | "left", /* VK_LEFT 0x25 */ |
| 4718 | "up", /* VK_UP 0x26 */ |
| 4719 | "right", /* VK_RIGHT 0x27 */ |
| 4720 | "down", /* VK_DOWN 0x28 */ |
| 4721 | "select", /* VK_SELECT 0x29 */ |
| 4722 | "print", /* VK_PRINT 0x2A */ |
| 4723 | "execute", /* VK_EXECUTE 0x2B */ |
| 4724 | "snapshot", /* VK_SNAPSHOT 0x2C */ |
| 4725 | "insert", /* VK_INSERT 0x2D */ |
| 4726 | "delete", /* VK_DELETE 0x2E */ |
| 4727 | "help", /* VK_HELP 0x2F */ |
| 4728 | |
| 4729 | /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */ |
| 4730 | |
| 4731 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4732 | |
| 4733 | 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */ |
| 4734 | |
| 4735 | /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */ |
| 4736 | |
| 4737 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4738 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4739 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 4740 | |
| 4741 | "lwindow", /* VK_LWIN 0x5B */ |
| 4742 | "rwindow", /* VK_RWIN 0x5C */ |
| 4743 | "apps", /* VK_APPS 0x5D */ |
| 4744 | |
| 4745 | 0, 0, /* 0x5E .. 0x5F */ |
| 4746 | |
| 4747 | "kp-0", /* VK_NUMPAD0 0x60 */ |
| 4748 | "kp-1", /* VK_NUMPAD1 0x61 */ |
| 4749 | "kp-2", /* VK_NUMPAD2 0x62 */ |
| 4750 | "kp-3", /* VK_NUMPAD3 0x63 */ |
| 4751 | "kp-4", /* VK_NUMPAD4 0x64 */ |
| 4752 | "kp-5", /* VK_NUMPAD5 0x65 */ |
| 4753 | "kp-6", /* VK_NUMPAD6 0x66 */ |
| 4754 | "kp-7", /* VK_NUMPAD7 0x67 */ |
| 4755 | "kp-8", /* VK_NUMPAD8 0x68 */ |
| 4756 | "kp-9", /* VK_NUMPAD9 0x69 */ |
| 4757 | "kp-multiply", /* VK_MULTIPLY 0x6A */ |
| 4758 | "kp-add", /* VK_ADD 0x6B */ |
| 4759 | "kp-separator", /* VK_SEPARATOR 0x6C */ |
| 4760 | "kp-subtract", /* VK_SUBTRACT 0x6D */ |
| 4761 | "kp-decimal", /* VK_DECIMAL 0x6E */ |
| 4762 | "kp-divide", /* VK_DIVIDE 0x6F */ |
| 4763 | "f1", /* VK_F1 0x70 */ |
| 4764 | "f2", /* VK_F2 0x71 */ |
| 4765 | "f3", /* VK_F3 0x72 */ |
| 4766 | "f4", /* VK_F4 0x73 */ |
| 4767 | "f5", /* VK_F5 0x74 */ |
| 4768 | "f6", /* VK_F6 0x75 */ |
| 4769 | "f7", /* VK_F7 0x76 */ |
| 4770 | "f8", /* VK_F8 0x77 */ |
| 4771 | "f9", /* VK_F9 0x78 */ |
| 4772 | "f10", /* VK_F10 0x79 */ |
| 4773 | "f11", /* VK_F11 0x7A */ |
| 4774 | "f12", /* VK_F12 0x7B */ |
| 4775 | "f13", /* VK_F13 0x7C */ |
| 4776 | "f14", /* VK_F14 0x7D */ |
| 4777 | "f15", /* VK_F15 0x7E */ |
| 4778 | "f16", /* VK_F16 0x7F */ |
| 4779 | "f17", /* VK_F17 0x80 */ |
| 4780 | "f18", /* VK_F18 0x81 */ |
| 4781 | "f19", /* VK_F19 0x82 */ |
| 4782 | "f20", /* VK_F20 0x83 */ |
| 4783 | "f21", /* VK_F21 0x84 */ |
| 4784 | "f22", /* VK_F22 0x85 */ |
| 4785 | "f23", /* VK_F23 0x86 */ |
| 4786 | "f24", /* VK_F24 0x87 */ |
| 4787 | |
| 4788 | 0, 0, 0, 0, /* 0x88 .. 0x8B */ |
| 4789 | 0, 0, 0, 0, /* 0x8C .. 0x8F */ |
| 4790 | |
| 4791 | "kp-numlock", /* VK_NUMLOCK 0x90 */ |
| 4792 | "scroll", /* VK_SCROLL 0x91 */ |
| 4793 | |
| 4794 | "kp-space", /* VK_NUMPAD_CLEAR 0x92 */ |
| 4795 | "kp-enter", /* VK_NUMPAD_ENTER 0x93 */ |
| 4796 | "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */ |
| 4797 | "kp-next", /* VK_NUMPAD_NEXT 0x95 */ |
| 4798 | "kp-end", /* VK_NUMPAD_END 0x96 */ |
| 4799 | "kp-home", /* VK_NUMPAD_HOME 0x97 */ |
| 4800 | "kp-left", /* VK_NUMPAD_LEFT 0x98 */ |
| 4801 | "kp-up", /* VK_NUMPAD_UP 0x99 */ |
| 4802 | "kp-right", /* VK_NUMPAD_RIGHT 0x9A */ |
| 4803 | "kp-down", /* VK_NUMPAD_DOWN 0x9B */ |
| 4804 | "kp-insert", /* VK_NUMPAD_INSERT 0x9C */ |
| 4805 | "kp-delete", /* VK_NUMPAD_DELETE 0x9D */ |
| 4806 | |
| 4807 | 0, 0, /* 0x9E .. 0x9F */ |
| 4808 | |
| 4809 | /* |
| 4810 | * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys. |
| 4811 | * Used only as parameters to GetAsyncKeyState and GetKeyState. |
| 4812 | * No other API or message will distinguish left and right keys this way. |
| 4813 | */ |
| 4814 | /* 0xA0 .. 0xEF */ |
| 4815 | |
| 4816 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4817 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4818 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4819 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4820 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4821 | |
| 4822 | /* 0xF0 .. 0xF5 */ |
| 4823 | |
| 4824 | 0, 0, 0, 0, 0, 0, |
| 4825 | |
| 4826 | "attn", /* VK_ATTN 0xF6 */ |
| 4827 | "crsel", /* VK_CRSEL 0xF7 */ |
| 4828 | "exsel", /* VK_EXSEL 0xF8 */ |
| 4829 | "ereof", /* VK_EREOF 0xF9 */ |
| 4830 | "play", /* VK_PLAY 0xFA */ |
| 4831 | "zoom", /* VK_ZOOM 0xFB */ |
| 4832 | "noname", /* VK_NONAME 0xFC */ |
| 4833 | "pa1", /* VK_PA1 0xFD */ |
| 4834 | "oem_clear", /* VK_OEM_CLEAR 0xFE */ |
| 4835 | 0 /* 0xFF */ |
| 4836 | }; |
| 4837 | |
| 4838 | #else /* not HAVE_NTGUI */ |
| 4839 | |
| 4840 | /* This should be dealt with in XTread_socket now, and that doesn't |
| 4841 | depend on the client system having the Kana syms defined. See also |
| 4842 | the XK_kana_A case below. */ |
| 4843 | #if 0 |
| 4844 | #ifdef XK_kana_A |
| 4845 | static char *lispy_kana_keys[] = |
| 4846 | { |
| 4847 | /* X Keysym value */ |
| 4848 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x400 .. 0x40f */ |
| 4849 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x410 .. 0x41f */ |
| 4850 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x420 .. 0x42f */ |
| 4851 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x430 .. 0x43f */ |
| 4852 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x440 .. 0x44f */ |
| 4853 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x450 .. 0x45f */ |
| 4854 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x460 .. 0x46f */ |
| 4855 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,"overline",0, |
| 4856 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x480 .. 0x48f */ |
| 4857 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x490 .. 0x49f */ |
| 4858 | 0, "kana-fullstop", "kana-openingbracket", "kana-closingbracket", |
| 4859 | "kana-comma", "kana-conjunctive", "kana-WO", "kana-a", |
| 4860 | "kana-i", "kana-u", "kana-e", "kana-o", |
| 4861 | "kana-ya", "kana-yu", "kana-yo", "kana-tsu", |
| 4862 | "prolongedsound", "kana-A", "kana-I", "kana-U", |
| 4863 | "kana-E", "kana-O", "kana-KA", "kana-KI", |
| 4864 | "kana-KU", "kana-KE", "kana-KO", "kana-SA", |
| 4865 | "kana-SHI", "kana-SU", "kana-SE", "kana-SO", |
| 4866 | "kana-TA", "kana-CHI", "kana-TSU", "kana-TE", |
| 4867 | "kana-TO", "kana-NA", "kana-NI", "kana-NU", |
| 4868 | "kana-NE", "kana-NO", "kana-HA", "kana-HI", |
| 4869 | "kana-FU", "kana-HE", "kana-HO", "kana-MA", |
| 4870 | "kana-MI", "kana-MU", "kana-ME", "kana-MO", |
| 4871 | "kana-YA", "kana-YU", "kana-YO", "kana-RA", |
| 4872 | "kana-RI", "kana-RU", "kana-RE", "kana-RO", |
| 4873 | "kana-WA", "kana-N", "voicedsound", "semivoicedsound", |
| 4874 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4e0 .. 0x4ef */ |
| 4875 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4f0 .. 0x4ff */ |
| 4876 | }; |
| 4877 | #endif /* XK_kana_A */ |
| 4878 | #endif /* 0 */ |
| 4879 | |
| 4880 | #define FUNCTION_KEY_OFFSET 0xff00 |
| 4881 | |
| 4882 | /* You'll notice that this table is arranged to be conveniently |
| 4883 | indexed by X Windows keysym values. */ |
| 4884 | static char *lispy_function_keys[] = |
| 4885 | { |
| 4886 | /* X Keysym value */ |
| 4887 | |
| 4888 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00...0f */ |
| 4889 | "backspace", "tab", "linefeed", "clear", |
| 4890 | 0, "return", 0, 0, |
| 4891 | 0, 0, 0, "pause", /* 0xff10...1f */ |
| 4892 | 0, 0, 0, 0, 0, 0, 0, "escape", |
| 4893 | 0, 0, 0, 0, |
| 4894 | 0, "kanji", "muhenkan", "henkan", /* 0xff20...2f */ |
| 4895 | "romaji", "hiragana", "katakana", "hiragana-katakana", |
| 4896 | "zenkaku", "hankaku", "zenkaku-hankaku", "touroku", |
| 4897 | "massyo", "kana-lock", "kana-shift", "eisu-shift", |
| 4898 | "eisu-toggle", /* 0xff30...3f */ |
| 4899 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4900 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ |
| 4901 | |
| 4902 | "home", "left", "up", "right", /* 0xff50 */ /* IsCursorKey */ |
| 4903 | "down", "prior", "next", "end", |
| 4904 | "begin", 0, 0, 0, 0, 0, 0, 0, |
| 4905 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ |
| 4906 | "print", |
| 4907 | "execute", |
| 4908 | "insert", |
| 4909 | 0, /* 0xff64 */ |
| 4910 | "undo", |
| 4911 | "redo", |
| 4912 | "menu", |
| 4913 | "find", |
| 4914 | "cancel", |
| 4915 | "help", |
| 4916 | "break", /* 0xff6b */ |
| 4917 | |
| 4918 | 0, 0, 0, 0, |
| 4919 | 0, 0, 0, 0, "backtab", 0, 0, 0, /* 0xff70... */ |
| 4920 | 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff78... */ |
| 4921 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
| 4922 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 4923 | "kp-tab", /* 0xff89 */ |
| 4924 | 0, 0, 0, |
| 4925 | "kp-enter", /* 0xff8d */ |
| 4926 | 0, 0, 0, |
| 4927 | "kp-f1", /* 0xff91 */ |
| 4928 | "kp-f2", |
| 4929 | "kp-f3", |
| 4930 | "kp-f4", |
| 4931 | "kp-home", /* 0xff95 */ |
| 4932 | "kp-left", |
| 4933 | "kp-up", |
| 4934 | "kp-right", |
| 4935 | "kp-down", |
| 4936 | "kp-prior", /* kp-page-up */ |
| 4937 | "kp-next", /* kp-page-down */ |
| 4938 | "kp-end", |
| 4939 | "kp-begin", |
| 4940 | "kp-insert", |
| 4941 | "kp-delete", |
| 4942 | 0, /* 0xffa0 */ |
| 4943 | 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 4944 | "kp-multiply", /* 0xffaa */ |
| 4945 | "kp-add", |
| 4946 | "kp-separator", |
| 4947 | "kp-subtract", |
| 4948 | "kp-decimal", |
| 4949 | "kp-divide", /* 0xffaf */ |
| 4950 | "kp-0", /* 0xffb0 */ |
| 4951 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", |
| 4952 | 0, /* 0xffba */ |
| 4953 | 0, 0, |
| 4954 | "kp-equal", /* 0xffbd */ |
| 4955 | "f1", /* 0xffbe */ /* IsFunctionKey */ |
| 4956 | "f2", |
| 4957 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ |
| 4958 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", |
| 4959 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ |
| 4960 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", |
| 4961 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ |
| 4962 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 4963 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ |
| 4964 | 0, 0, 0, 0, 0, 0, 0, "delete" |
| 4965 | }; |
| 4966 | |
| 4967 | /* ISO 9995 Function and Modifier Keys; the first byte is 0xFE. */ |
| 4968 | #define ISO_FUNCTION_KEY_OFFSET 0xfe00 |
| 4969 | |
| 4970 | static char *iso_lispy_function_keys[] = |
| 4971 | { |
| 4972 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe00 */ |
| 4973 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe08 */ |
| 4974 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe10 */ |
| 4975 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe18 */ |
| 4976 | "iso-lefttab", /* 0xfe20 */ |
| 4977 | "iso-move-line-up", "iso-move-line-down", |
| 4978 | "iso-partial-line-up", "iso-partial-line-down", |
| 4979 | "iso-partial-space-left", "iso-partial-space-right", |
| 4980 | "iso-set-margin-left", "iso-set-margin-right", /* 0xffe27, 28 */ |
| 4981 | "iso-release-margin-left", "iso-release-margin-right", |
| 4982 | "iso-release-both-margins", |
| 4983 | "iso-fast-cursor-left", "iso-fast-cursor-right", |
| 4984 | "iso-fast-cursor-up", "iso-fast-cursor-down", |
| 4985 | "iso-continuous-underline", "iso-discontinuous-underline", /* 0xfe30, 31 */ |
| 4986 | "iso-emphasize", "iso-center-object", "iso-enter", /* ... 0xfe34 */ |
| 4987 | }; |
| 4988 | |
| 4989 | #endif /* not HAVE_NTGUI */ |
| 4990 | |
| 4991 | Lisp_Object Vlispy_mouse_stem; |
| 4992 | |
| 4993 | static char *lispy_wheel_names[] = |
| 4994 | { |
| 4995 | "wheel-up", "wheel-down" |
| 4996 | }; |
| 4997 | |
| 4998 | /* drag-n-drop events are generated when a set of selected files are |
| 4999 | dragged from another application and dropped onto an Emacs window. */ |
| 5000 | static char *lispy_drag_n_drop_names[] = |
| 5001 | { |
| 5002 | "drag-n-drop" |
| 5003 | }; |
| 5004 | |
| 5005 | /* Scroll bar parts. */ |
| 5006 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
| 5007 | Lisp_Object Qup, Qdown, Qbottom, Qend_scroll; |
| 5008 | Lisp_Object Qtop, Qratio; |
| 5009 | |
| 5010 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
| 5011 | Lisp_Object *scroll_bar_parts[] = { |
| 5012 | &Qabove_handle, &Qhandle, &Qbelow_handle, |
| 5013 | &Qup, &Qdown, &Qtop, &Qbottom, &Qend_scroll, &Qratio |
| 5014 | }; |
| 5015 | |
| 5016 | /* User signal events. */ |
| 5017 | Lisp_Object Qusr1_signal, Qusr2_signal; |
| 5018 | |
| 5019 | Lisp_Object *lispy_user_signals[] = |
| 5020 | { |
| 5021 | &Qusr1_signal, &Qusr2_signal |
| 5022 | }; |
| 5023 | |
| 5024 | |
| 5025 | /* A vector, indexed by button number, giving the down-going location |
| 5026 | of currently depressed buttons, both scroll bar and non-scroll bar. |
| 5027 | |
| 5028 | The elements have the form |
| 5029 | (BUTTON-NUMBER MODIFIER-MASK . REST) |
| 5030 | where REST is the cdr of a position as it would be reported in the event. |
| 5031 | |
| 5032 | The make_lispy_event function stores positions here to tell the |
| 5033 | difference between click and drag events, and to store the starting |
| 5034 | location to be included in drag events. */ |
| 5035 | |
| 5036 | static Lisp_Object button_down_location; |
| 5037 | |
| 5038 | /* Information about the most recent up-going button event: Which |
| 5039 | button, what location, and what time. */ |
| 5040 | |
| 5041 | static int last_mouse_button; |
| 5042 | static int last_mouse_x; |
| 5043 | static int last_mouse_y; |
| 5044 | static unsigned long button_down_time; |
| 5045 | |
| 5046 | /* The maximum time between clicks to make a double-click, or Qnil to |
| 5047 | disable double-click detection, or Qt for no time limit. */ |
| 5048 | |
| 5049 | Lisp_Object Vdouble_click_time; |
| 5050 | |
| 5051 | /* Maximum number of pixels the mouse may be moved between clicks |
| 5052 | to make a double-click. */ |
| 5053 | |
| 5054 | EMACS_INT double_click_fuzz; |
| 5055 | |
| 5056 | /* The number of clicks in this multiple-click. */ |
| 5057 | |
| 5058 | int double_click_count; |
| 5059 | |
| 5060 | /* Return position of a mouse click or wheel event */ |
| 5061 | |
| 5062 | static Lisp_Object |
| 5063 | make_lispy_position (f, x, y, time) |
| 5064 | struct frame *f; |
| 5065 | Lisp_Object *x, *y; |
| 5066 | unsigned long time; |
| 5067 | { |
| 5068 | Lisp_Object window; |
| 5069 | enum window_part part; |
| 5070 | Lisp_Object posn = Qnil; |
| 5071 | Lisp_Object extra_info = Qnil; |
| 5072 | int wx, wy; |
| 5073 | |
| 5074 | /* Set `window' to the window under frame pixel coordinates (x,y) */ |
| 5075 | if (f) |
| 5076 | window = window_from_coordinates (f, XINT (*x), XINT (*y), |
| 5077 | &part, &wx, &wy, 0); |
| 5078 | else |
| 5079 | window = Qnil; |
| 5080 | |
| 5081 | if (WINDOWP (window)) |
| 5082 | { |
| 5083 | /* It's a click in window window at frame coordinates (x,y) */ |
| 5084 | struct window *w = XWINDOW (window); |
| 5085 | Lisp_Object string_info = Qnil; |
| 5086 | int textpos = -1, rx = -1, ry = -1; |
| 5087 | int dx = -1, dy = -1; |
| 5088 | int width = -1, height = -1; |
| 5089 | Lisp_Object object = Qnil; |
| 5090 | |
| 5091 | /* Set event coordinates to window-relative coordinates |
| 5092 | for constructing the Lisp event below. */ |
| 5093 | XSETINT (*x, wx); |
| 5094 | XSETINT (*y, wy); |
| 5095 | |
| 5096 | if (part == ON_TEXT) |
| 5097 | { |
| 5098 | wx += WINDOW_LEFT_MARGIN_WIDTH (w); |
| 5099 | } |
| 5100 | else if (part == ON_MODE_LINE || part == ON_HEADER_LINE) |
| 5101 | { |
| 5102 | /* Mode line or header line. Look for a string under |
| 5103 | the mouse that may have a `local-map' property. */ |
| 5104 | Lisp_Object string; |
| 5105 | int charpos; |
| 5106 | |
| 5107 | posn = part == ON_MODE_LINE ? Qmode_line : Qheader_line; |
| 5108 | rx = wx, ry = wy; |
| 5109 | string = mode_line_string (w, part, &rx, &ry, &charpos, |
| 5110 | &object, &dx, &dy, &width, &height); |
| 5111 | if (STRINGP (string)) |
| 5112 | string_info = Fcons (string, make_number (charpos)); |
| 5113 | if (w == XWINDOW (selected_window)) |
| 5114 | textpos = PT; |
| 5115 | else |
| 5116 | textpos = XMARKER (w->pointm)->charpos; |
| 5117 | } |
| 5118 | else if (part == ON_VERTICAL_BORDER) |
| 5119 | { |
| 5120 | posn = Qvertical_line; |
| 5121 | wx = -1; |
| 5122 | dx = 0; |
| 5123 | width = 1; |
| 5124 | } |
| 5125 | else if (part == ON_LEFT_MARGIN || part == ON_RIGHT_MARGIN) |
| 5126 | { |
| 5127 | Lisp_Object string; |
| 5128 | int charpos; |
| 5129 | |
| 5130 | posn = (part == ON_LEFT_MARGIN) ? Qleft_margin : Qright_margin; |
| 5131 | rx = wx, ry = wy; |
| 5132 | string = marginal_area_string (w, part, &rx, &ry, &charpos, |
| 5133 | &object, &dx, &dy, &width, &height); |
| 5134 | if (STRINGP (string)) |
| 5135 | string_info = Fcons (string, make_number (charpos)); |
| 5136 | if (part == ON_LEFT_MARGIN) |
| 5137 | wx = 0; |
| 5138 | else |
| 5139 | wx = window_box_right_offset (w, TEXT_AREA) - 1; |
| 5140 | } |
| 5141 | else if (part == ON_LEFT_FRINGE) |
| 5142 | { |
| 5143 | posn = Qleft_fringe; |
| 5144 | rx = 0; |
| 5145 | dx = wx; |
| 5146 | wx = (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
| 5147 | ? 0 |
| 5148 | : window_box_width (w, LEFT_MARGIN_AREA)); |
| 5149 | dx -= wx; |
| 5150 | } |
| 5151 | else if (part == ON_RIGHT_FRINGE) |
| 5152 | { |
| 5153 | posn = Qright_fringe; |
| 5154 | rx = 0; |
| 5155 | dx = wx; |
| 5156 | wx = (window_box_width (w, LEFT_MARGIN_AREA) |
| 5157 | + window_box_width (w, TEXT_AREA) |
| 5158 | + (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
| 5159 | ? window_box_width (w, RIGHT_MARGIN_AREA) |
| 5160 | : 0)); |
| 5161 | dx -= wx; |
| 5162 | } |
| 5163 | else |
| 5164 | { |
| 5165 | /* Note: We have no special posn for part == ON_SCROLL_BAR. */ |
| 5166 | wx = max (WINDOW_LEFT_MARGIN_WIDTH (w), wx); |
| 5167 | } |
| 5168 | |
| 5169 | if (textpos < 0) |
| 5170 | { |
| 5171 | Lisp_Object string2, object2 = Qnil; |
| 5172 | struct display_pos p; |
| 5173 | int dx2, dy2; |
| 5174 | int width2, height2; |
| 5175 | string2 = buffer_posn_from_coords (w, &wx, &wy, &p, |
| 5176 | &object2, &dx2, &dy2, |
| 5177 | &width2, &height2); |
| 5178 | textpos = CHARPOS (p.pos); |
| 5179 | if (rx < 0) rx = wx; |
| 5180 | if (ry < 0) ry = wy; |
| 5181 | if (dx < 0) dx = dx2; |
| 5182 | if (dy < 0) dy = dy2; |
| 5183 | if (width < 0) width = width2; |
| 5184 | if (height < 0) height = height2; |
| 5185 | |
| 5186 | if (NILP (posn)) |
| 5187 | { |
| 5188 | posn = make_number (textpos); |
| 5189 | if (STRINGP (string2)) |
| 5190 | string_info = Fcons (string2, |
| 5191 | make_number (CHARPOS (p.string_pos))); |
| 5192 | } |
| 5193 | if (NILP (object)) |
| 5194 | object = object2; |
| 5195 | } |
| 5196 | |
| 5197 | #ifdef HAVE_WINDOW_SYSTEM |
| 5198 | if (IMAGEP (object)) |
| 5199 | { |
| 5200 | Lisp_Object image_map, hotspot; |
| 5201 | if ((image_map = Fplist_get (XCDR (object), QCmap), |
| 5202 | !NILP (image_map)) |
| 5203 | && (hotspot = find_hot_spot (image_map, dx, dy), |
| 5204 | CONSP (hotspot)) |
| 5205 | && (hotspot = XCDR (hotspot), CONSP (hotspot))) |
| 5206 | posn = XCAR (hotspot); |
| 5207 | } |
| 5208 | #endif |
| 5209 | |
| 5210 | /* Object info */ |
| 5211 | extra_info = Fcons (object, |
| 5212 | Fcons (Fcons (make_number (dx), |
| 5213 | make_number (dy)), |
| 5214 | Fcons (Fcons (make_number (width), |
| 5215 | make_number (height)), |
| 5216 | Qnil))); |
| 5217 | |
| 5218 | /* String info */ |
| 5219 | extra_info = Fcons (string_info, |
| 5220 | Fcons (make_number (textpos), |
| 5221 | Fcons (Fcons (make_number (rx), |
| 5222 | make_number (ry)), |
| 5223 | extra_info))); |
| 5224 | } |
| 5225 | else if (f != 0) |
| 5226 | { |
| 5227 | XSETFRAME (window, f); |
| 5228 | } |
| 5229 | else |
| 5230 | { |
| 5231 | window = Qnil; |
| 5232 | XSETFASTINT (*x, 0); |
| 5233 | XSETFASTINT (*y, 0); |
| 5234 | } |
| 5235 | |
| 5236 | return Fcons (window, |
| 5237 | Fcons (posn, |
| 5238 | Fcons (Fcons (*x, *y), |
| 5239 | Fcons (make_number (time), |
| 5240 | extra_info)))); |
| 5241 | } |
| 5242 | |
| 5243 | /* Given a struct input_event, build the lisp event which represents |
| 5244 | it. If EVENT is 0, build a mouse movement event from the mouse |
| 5245 | movement buffer, which should have a movement event in it. |
| 5246 | |
| 5247 | Note that events must be passed to this function in the order they |
| 5248 | are received; this function stores the location of button presses |
| 5249 | in order to build drag events when the button is released. */ |
| 5250 | |
| 5251 | static Lisp_Object |
| 5252 | make_lispy_event (event) |
| 5253 | struct input_event *event; |
| 5254 | { |
| 5255 | int i; |
| 5256 | |
| 5257 | switch (SWITCH_ENUM_CAST (event->kind)) |
| 5258 | { |
| 5259 | /* A simple keystroke. */ |
| 5260 | case ASCII_KEYSTROKE_EVENT: |
| 5261 | { |
| 5262 | Lisp_Object lispy_c; |
| 5263 | int c = event->code & 0377; |
| 5264 | /* Turn ASCII characters into control characters |
| 5265 | when proper. */ |
| 5266 | if (event->modifiers & ctrl_modifier) |
| 5267 | c = make_ctrl_char (c); |
| 5268 | |
| 5269 | /* Add in the other modifier bits. We took care of ctrl_modifier |
| 5270 | just above, and the shift key was taken care of by the X code, |
| 5271 | and applied to control characters by make_ctrl_char. */ |
| 5272 | c |= (event->modifiers |
| 5273 | & (meta_modifier | alt_modifier |
| 5274 | | hyper_modifier | super_modifier)); |
| 5275 | /* Distinguish Shift-SPC from SPC. */ |
| 5276 | if ((event->code & 0377) == 040 |
| 5277 | && event->modifiers & shift_modifier) |
| 5278 | c |= shift_modifier; |
| 5279 | button_down_time = 0; |
| 5280 | XSETFASTINT (lispy_c, c); |
| 5281 | return lispy_c; |
| 5282 | } |
| 5283 | |
| 5284 | case MULTIBYTE_CHAR_KEYSTROKE_EVENT: |
| 5285 | { |
| 5286 | Lisp_Object lispy_c; |
| 5287 | int c = event->code; |
| 5288 | |
| 5289 | /* Add in the other modifier bits. We took care of ctrl_modifier |
| 5290 | just above, and the shift key was taken care of by the X code, |
| 5291 | and applied to control characters by make_ctrl_char. */ |
| 5292 | c |= (event->modifiers |
| 5293 | & (meta_modifier | alt_modifier |
| 5294 | | hyper_modifier | super_modifier | ctrl_modifier)); |
| 5295 | /* What about the `shift' modifier ? */ |
| 5296 | button_down_time = 0; |
| 5297 | XSETFASTINT (lispy_c, c); |
| 5298 | return lispy_c; |
| 5299 | } |
| 5300 | |
| 5301 | /* A function key. The symbol may need to have modifier prefixes |
| 5302 | tacked onto it. */ |
| 5303 | case NON_ASCII_KEYSTROKE_EVENT: |
| 5304 | button_down_time = 0; |
| 5305 | |
| 5306 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) |
| 5307 | if (event->code == lispy_accent_codes[i]) |
| 5308 | return modify_event_symbol (i, |
| 5309 | event->modifiers, |
| 5310 | Qfunction_key, Qnil, |
| 5311 | lispy_accent_keys, &accent_key_syms, |
| 5312 | (sizeof (lispy_accent_keys) |
| 5313 | / sizeof (lispy_accent_keys[0]))); |
| 5314 | |
| 5315 | #if 0 |
| 5316 | #ifdef XK_kana_A |
| 5317 | if (event->code >= 0x400 && event->code < 0x500) |
| 5318 | return modify_event_symbol (event->code - 0x400, |
| 5319 | event->modifiers & ~shift_modifier, |
| 5320 | Qfunction_key, Qnil, |
| 5321 | lispy_kana_keys, &func_key_syms, |
| 5322 | (sizeof (lispy_kana_keys) |
| 5323 | / sizeof (lispy_kana_keys[0]))); |
| 5324 | #endif /* XK_kana_A */ |
| 5325 | #endif /* 0 */ |
| 5326 | |
| 5327 | #ifdef ISO_FUNCTION_KEY_OFFSET |
| 5328 | if (event->code < FUNCTION_KEY_OFFSET |
| 5329 | && event->code >= ISO_FUNCTION_KEY_OFFSET) |
| 5330 | return modify_event_symbol (event->code - ISO_FUNCTION_KEY_OFFSET, |
| 5331 | event->modifiers, |
| 5332 | Qfunction_key, Qnil, |
| 5333 | iso_lispy_function_keys, &func_key_syms, |
| 5334 | (sizeof (iso_lispy_function_keys) |
| 5335 | / sizeof (iso_lispy_function_keys[0]))); |
| 5336 | #endif |
| 5337 | |
| 5338 | /* Handle system-specific or unknown keysyms. */ |
| 5339 | if (event->code & (1 << 28) |
| 5340 | || event->code - FUNCTION_KEY_OFFSET < 0 |
| 5341 | || (event->code - FUNCTION_KEY_OFFSET |
| 5342 | >= sizeof lispy_function_keys / sizeof *lispy_function_keys) |
| 5343 | || !lispy_function_keys[event->code - FUNCTION_KEY_OFFSET]) |
| 5344 | { |
| 5345 | /* We need to use an alist rather than a vector as the cache |
| 5346 | since we can't make a vector long enuf. */ |
| 5347 | if (NILP (current_kboard->system_key_syms)) |
| 5348 | current_kboard->system_key_syms = Fcons (Qnil, Qnil); |
| 5349 | return modify_event_symbol (event->code, |
| 5350 | event->modifiers, |
| 5351 | Qfunction_key, |
| 5352 | current_kboard->Vsystem_key_alist, |
| 5353 | 0, ¤t_kboard->system_key_syms, |
| 5354 | (unsigned) -1); |
| 5355 | } |
| 5356 | |
| 5357 | return modify_event_symbol (event->code - FUNCTION_KEY_OFFSET, |
| 5358 | event->modifiers, |
| 5359 | Qfunction_key, Qnil, |
| 5360 | lispy_function_keys, &func_key_syms, |
| 5361 | (sizeof (lispy_function_keys) |
| 5362 | / sizeof (lispy_function_keys[0]))); |
| 5363 | |
| 5364 | #ifdef HAVE_MOUSE |
| 5365 | /* A mouse click. Figure out where it is, decide whether it's |
| 5366 | a press, click or drag, and build the appropriate structure. */ |
| 5367 | case MOUSE_CLICK_EVENT: |
| 5368 | #ifndef USE_TOOLKIT_SCROLL_BARS |
| 5369 | case SCROLL_BAR_CLICK_EVENT: |
| 5370 | #endif |
| 5371 | { |
| 5372 | int button = event->code; |
| 5373 | int is_double; |
| 5374 | Lisp_Object position; |
| 5375 | Lisp_Object *start_pos_ptr; |
| 5376 | Lisp_Object start_pos; |
| 5377 | |
| 5378 | position = Qnil; |
| 5379 | |
| 5380 | /* Build the position as appropriate for this mouse click. */ |
| 5381 | if (event->kind == MOUSE_CLICK_EVENT) |
| 5382 | { |
| 5383 | struct frame *f = XFRAME (event->frame_or_window); |
| 5384 | #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK) |
| 5385 | int row, column; |
| 5386 | #endif |
| 5387 | |
| 5388 | /* Ignore mouse events that were made on frame that |
| 5389 | have been deleted. */ |
| 5390 | if (! FRAME_LIVE_P (f)) |
| 5391 | return Qnil; |
| 5392 | |
| 5393 | #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK) |
| 5394 | /* EVENT->x and EVENT->y are frame-relative pixel |
| 5395 | coordinates at this place. Under old redisplay, COLUMN |
| 5396 | and ROW are set to frame relative glyph coordinates |
| 5397 | which are then used to determine whether this click is |
| 5398 | in a menu (non-toolkit version). */ |
| 5399 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
| 5400 | &column, &row, NULL, 1); |
| 5401 | |
| 5402 | /* In the non-toolkit version, clicks on the menu bar |
| 5403 | are ordinary button events in the event buffer. |
| 5404 | Distinguish them, and invoke the menu. |
| 5405 | |
| 5406 | (In the toolkit version, the toolkit handles the menu bar |
| 5407 | and Emacs doesn't know about it until after the user |
| 5408 | makes a selection.) */ |
| 5409 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f) |
| 5410 | && (event->modifiers & down_modifier)) |
| 5411 | { |
| 5412 | Lisp_Object items, item; |
| 5413 | int hpos; |
| 5414 | int i; |
| 5415 | |
| 5416 | #if 0 |
| 5417 | /* Activate the menu bar on the down event. If the |
| 5418 | up event comes in before the menu code can deal with it, |
| 5419 | just ignore it. */ |
| 5420 | if (! (event->modifiers & down_modifier)) |
| 5421 | return Qnil; |
| 5422 | #endif |
| 5423 | |
| 5424 | /* Find the menu bar item under `column'. */ |
| 5425 | item = Qnil; |
| 5426 | items = FRAME_MENU_BAR_ITEMS (f); |
| 5427 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
| 5428 | { |
| 5429 | Lisp_Object pos, string; |
| 5430 | string = AREF (items, i + 1); |
| 5431 | pos = AREF (items, i + 3); |
| 5432 | if (NILP (string)) |
| 5433 | break; |
| 5434 | if (column >= XINT (pos) |
| 5435 | && column < XINT (pos) + SCHARS (string)) |
| 5436 | { |
| 5437 | item = AREF (items, i); |
| 5438 | break; |
| 5439 | } |
| 5440 | } |
| 5441 | |
| 5442 | /* ELisp manual 2.4b says (x y) are window relative but |
| 5443 | code says they are frame-relative. */ |
| 5444 | position |
| 5445 | = Fcons (event->frame_or_window, |
| 5446 | Fcons (Qmenu_bar, |
| 5447 | Fcons (Fcons (event->x, event->y), |
| 5448 | Fcons (make_number (event->timestamp), |
| 5449 | Qnil)))); |
| 5450 | |
| 5451 | return Fcons (item, Fcons (position, Qnil)); |
| 5452 | } |
| 5453 | #endif /* not USE_X_TOOLKIT && not USE_GTK */ |
| 5454 | |
| 5455 | position = make_lispy_position (f, &event->x, &event->y, |
| 5456 | event->timestamp); |
| 5457 | } |
| 5458 | #ifndef USE_TOOLKIT_SCROLL_BARS |
| 5459 | else |
| 5460 | { |
| 5461 | /* It's a scrollbar click. */ |
| 5462 | Lisp_Object window; |
| 5463 | Lisp_Object portion_whole; |
| 5464 | Lisp_Object part; |
| 5465 | |
| 5466 | window = event->frame_or_window; |
| 5467 | portion_whole = Fcons (event->x, event->y); |
| 5468 | part = *scroll_bar_parts[(int) event->part]; |
| 5469 | |
| 5470 | position |
| 5471 | = Fcons (window, |
| 5472 | Fcons (Qvertical_scroll_bar, |
| 5473 | Fcons (portion_whole, |
| 5474 | Fcons (make_number (event->timestamp), |
| 5475 | Fcons (part, Qnil))))); |
| 5476 | } |
| 5477 | #endif /* not USE_TOOLKIT_SCROLL_BARS */ |
| 5478 | |
| 5479 | if (button >= ASIZE (button_down_location)) |
| 5480 | { |
| 5481 | button_down_location = larger_vector (button_down_location, |
| 5482 | button + 1, Qnil); |
| 5483 | mouse_syms = larger_vector (mouse_syms, button + 1, Qnil); |
| 5484 | } |
| 5485 | |
| 5486 | start_pos_ptr = &AREF (button_down_location, button); |
| 5487 | start_pos = *start_pos_ptr; |
| 5488 | *start_pos_ptr = Qnil; |
| 5489 | |
| 5490 | { |
| 5491 | /* On window-system frames, use the value of |
| 5492 | double-click-fuzz as is. On other frames, interpret it |
| 5493 | as a multiple of 1/8 characters. */ |
| 5494 | struct frame *f; |
| 5495 | int fuzz; |
| 5496 | |
| 5497 | if (WINDOWP (event->frame_or_window)) |
| 5498 | f = XFRAME (XWINDOW (event->frame_or_window)->frame); |
| 5499 | else if (FRAMEP (event->frame_or_window)) |
| 5500 | f = XFRAME (event->frame_or_window); |
| 5501 | else |
| 5502 | abort (); |
| 5503 | |
| 5504 | if (FRAME_WINDOW_P (f)) |
| 5505 | fuzz = double_click_fuzz; |
| 5506 | else |
| 5507 | fuzz = double_click_fuzz / 8; |
| 5508 | |
| 5509 | is_double = (button == last_mouse_button |
| 5510 | && (abs (XINT (event->x) - last_mouse_x) <= fuzz) |
| 5511 | && (abs (XINT (event->y) - last_mouse_y) <= fuzz) |
| 5512 | && button_down_time != 0 |
| 5513 | && (EQ (Vdouble_click_time, Qt) |
| 5514 | || (INTEGERP (Vdouble_click_time) |
| 5515 | && ((int)(event->timestamp - button_down_time) |
| 5516 | < XINT (Vdouble_click_time))))); |
| 5517 | } |
| 5518 | |
| 5519 | last_mouse_button = button; |
| 5520 | last_mouse_x = XINT (event->x); |
| 5521 | last_mouse_y = XINT (event->y); |
| 5522 | |
| 5523 | /* If this is a button press, squirrel away the location, so |
| 5524 | we can decide later whether it was a click or a drag. */ |
| 5525 | if (event->modifiers & down_modifier) |
| 5526 | { |
| 5527 | if (is_double) |
| 5528 | { |
| 5529 | double_click_count++; |
| 5530 | event->modifiers |= ((double_click_count > 2) |
| 5531 | ? triple_modifier |
| 5532 | : double_modifier); |
| 5533 | } |
| 5534 | else |
| 5535 | double_click_count = 1; |
| 5536 | button_down_time = event->timestamp; |
| 5537 | *start_pos_ptr = Fcopy_alist (position); |
| 5538 | } |
| 5539 | |
| 5540 | /* Now we're releasing a button - check the co-ordinates to |
| 5541 | see if this was a click or a drag. */ |
| 5542 | else if (event->modifiers & up_modifier) |
| 5543 | { |
| 5544 | /* If we did not see a down before this up, ignore the up. |
| 5545 | Probably this happened because the down event chose a |
| 5546 | menu item. It would be an annoyance to treat the |
| 5547 | release of the button that chose the menu item as a |
| 5548 | separate event. */ |
| 5549 | |
| 5550 | if (!CONSP (start_pos)) |
| 5551 | return Qnil; |
| 5552 | |
| 5553 | event->modifiers &= ~up_modifier; |
| 5554 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
| 5555 | if (!CONSP (start_pos)) |
| 5556 | event->modifiers |= click_modifier; |
| 5557 | else |
| 5558 | #endif |
| 5559 | { |
| 5560 | Lisp_Object down; |
| 5561 | EMACS_INT xdiff = double_click_fuzz, ydiff = double_click_fuzz; |
| 5562 | |
| 5563 | /* The third element of every position |
| 5564 | should be the (x,y) pair. */ |
| 5565 | down = Fcar (Fcdr (Fcdr (start_pos))); |
| 5566 | if (CONSP (down) |
| 5567 | && INTEGERP (XCAR (down)) && INTEGERP (XCDR (down))) |
| 5568 | { |
| 5569 | xdiff = XINT (event->x) - XINT (XCAR (down)); |
| 5570 | ydiff = XINT (event->y) - XINT (XCDR (down)); |
| 5571 | } |
| 5572 | |
| 5573 | if (xdiff < double_click_fuzz && xdiff > - double_click_fuzz |
| 5574 | && ydiff < double_click_fuzz && ydiff > - double_click_fuzz |
| 5575 | /* Maybe the mouse has moved a lot, caused scrolling, and |
| 5576 | eventually ended up at the same screen position (but |
| 5577 | not buffer position) in which case it is a drag, not |
| 5578 | a click. */ |
| 5579 | /* FIXME: OTOH if the buffer position has changed |
| 5580 | because of a timer or process filter rather than |
| 5581 | because of mouse movement, it should be considered as |
| 5582 | a click. But mouse-drag-region completely ignores |
| 5583 | this case and it hasn't caused any real problem, so |
| 5584 | it's probably OK to ignore it as well. */ |
| 5585 | && EQ (Fcar (Fcdr (start_pos)), Fcar (Fcdr (position)))) |
| 5586 | /* Mouse hasn't moved (much). */ |
| 5587 | event->modifiers |= click_modifier; |
| 5588 | else |
| 5589 | { |
| 5590 | button_down_time = 0; |
| 5591 | event->modifiers |= drag_modifier; |
| 5592 | } |
| 5593 | |
| 5594 | /* Don't check is_double; treat this as multiple |
| 5595 | if the down-event was multiple. */ |
| 5596 | if (double_click_count > 1) |
| 5597 | event->modifiers |= ((double_click_count > 2) |
| 5598 | ? triple_modifier |
| 5599 | : double_modifier); |
| 5600 | } |
| 5601 | } |
| 5602 | else |
| 5603 | /* Every mouse event should either have the down_modifier or |
| 5604 | the up_modifier set. */ |
| 5605 | abort (); |
| 5606 | |
| 5607 | { |
| 5608 | /* Get the symbol we should use for the mouse click. */ |
| 5609 | Lisp_Object head; |
| 5610 | |
| 5611 | head = modify_event_symbol (button, |
| 5612 | event->modifiers, |
| 5613 | Qmouse_click, Vlispy_mouse_stem, |
| 5614 | NULL, |
| 5615 | &mouse_syms, |
| 5616 | XVECTOR (mouse_syms)->size); |
| 5617 | if (event->modifiers & drag_modifier) |
| 5618 | return Fcons (head, |
| 5619 | Fcons (start_pos, |
| 5620 | Fcons (position, |
| 5621 | Qnil))); |
| 5622 | else if (event->modifiers & (double_modifier | triple_modifier)) |
| 5623 | return Fcons (head, |
| 5624 | Fcons (position, |
| 5625 | Fcons (make_number (double_click_count), |
| 5626 | Qnil))); |
| 5627 | else |
| 5628 | return Fcons (head, |
| 5629 | Fcons (position, |
| 5630 | Qnil)); |
| 5631 | } |
| 5632 | } |
| 5633 | |
| 5634 | case WHEEL_EVENT: |
| 5635 | { |
| 5636 | Lisp_Object position; |
| 5637 | Lisp_Object head; |
| 5638 | |
| 5639 | /* Build the position as appropriate for this mouse click. */ |
| 5640 | struct frame *f = XFRAME (event->frame_or_window); |
| 5641 | |
| 5642 | /* Ignore wheel events that were made on frame that have been |
| 5643 | deleted. */ |
| 5644 | if (! FRAME_LIVE_P (f)) |
| 5645 | return Qnil; |
| 5646 | |
| 5647 | position = make_lispy_position (f, &event->x, &event->y, |
| 5648 | event->timestamp); |
| 5649 | |
| 5650 | /* Set double or triple modifiers to indicate the wheel speed. */ |
| 5651 | { |
| 5652 | /* On window-system frames, use the value of |
| 5653 | double-click-fuzz as is. On other frames, interpret it |
| 5654 | as a multiple of 1/8 characters. */ |
| 5655 | struct frame *f; |
| 5656 | int fuzz; |
| 5657 | int is_double; |
| 5658 | |
| 5659 | if (WINDOWP (event->frame_or_window)) |
| 5660 | f = XFRAME (XWINDOW (event->frame_or_window)->frame); |
| 5661 | else if (FRAMEP (event->frame_or_window)) |
| 5662 | f = XFRAME (event->frame_or_window); |
| 5663 | else |
| 5664 | abort (); |
| 5665 | |
| 5666 | if (FRAME_WINDOW_P (f)) |
| 5667 | fuzz = double_click_fuzz; |
| 5668 | else |
| 5669 | fuzz = double_click_fuzz / 8; |
| 5670 | |
| 5671 | is_double = (last_mouse_button < 0 |
| 5672 | && (abs (XINT (event->x) - last_mouse_x) <= fuzz) |
| 5673 | && (abs (XINT (event->y) - last_mouse_y) <= fuzz) |
| 5674 | && button_down_time != 0 |
| 5675 | && (EQ (Vdouble_click_time, Qt) |
| 5676 | || (INTEGERP (Vdouble_click_time) |
| 5677 | && ((int)(event->timestamp - button_down_time) |
| 5678 | < XINT (Vdouble_click_time))))); |
| 5679 | if (is_double) |
| 5680 | { |
| 5681 | double_click_count++; |
| 5682 | event->modifiers |= ((double_click_count > 2) |
| 5683 | ? triple_modifier |
| 5684 | : double_modifier); |
| 5685 | } |
| 5686 | else |
| 5687 | { |
| 5688 | double_click_count = 1; |
| 5689 | event->modifiers |= click_modifier; |
| 5690 | } |
| 5691 | |
| 5692 | button_down_time = event->timestamp; |
| 5693 | /* Use a negative value to distinguish wheel from mouse button. */ |
| 5694 | last_mouse_button = -1; |
| 5695 | last_mouse_x = XINT (event->x); |
| 5696 | last_mouse_y = XINT (event->y); |
| 5697 | } |
| 5698 | |
| 5699 | { |
| 5700 | int symbol_num; |
| 5701 | |
| 5702 | if (event->modifiers & up_modifier) |
| 5703 | { |
| 5704 | /* Emit a wheel-up event. */ |
| 5705 | event->modifiers &= ~up_modifier; |
| 5706 | symbol_num = 0; |
| 5707 | } |
| 5708 | else if (event->modifiers & down_modifier) |
| 5709 | { |
| 5710 | /* Emit a wheel-down event. */ |
| 5711 | event->modifiers &= ~down_modifier; |
| 5712 | symbol_num = 1; |
| 5713 | } |
| 5714 | else |
| 5715 | /* Every wheel event should either have the down_modifier or |
| 5716 | the up_modifier set. */ |
| 5717 | abort (); |
| 5718 | |
| 5719 | /* Get the symbol we should use for the wheel event. */ |
| 5720 | head = modify_event_symbol (symbol_num, |
| 5721 | event->modifiers, |
| 5722 | Qmouse_click, |
| 5723 | Qnil, |
| 5724 | lispy_wheel_names, |
| 5725 | &wheel_syms, |
| 5726 | ASIZE (wheel_syms)); |
| 5727 | } |
| 5728 | |
| 5729 | if (event->modifiers & (double_modifier | triple_modifier)) |
| 5730 | return Fcons (head, |
| 5731 | Fcons (position, |
| 5732 | Fcons (make_number (double_click_count), |
| 5733 | Qnil))); |
| 5734 | else |
| 5735 | return Fcons (head, |
| 5736 | Fcons (position, |
| 5737 | Qnil)); |
| 5738 | } |
| 5739 | |
| 5740 | |
| 5741 | #ifdef USE_TOOLKIT_SCROLL_BARS |
| 5742 | |
| 5743 | /* We don't have down and up events if using toolkit scroll bars, |
| 5744 | so make this always a click event. Store in the `part' of |
| 5745 | the Lisp event a symbol which maps to the following actions: |
| 5746 | |
| 5747 | `above_handle' page up |
| 5748 | `below_handle' page down |
| 5749 | `up' line up |
| 5750 | `down' line down |
| 5751 | `top' top of buffer |
| 5752 | `bottom' bottom of buffer |
| 5753 | `handle' thumb has been dragged. |
| 5754 | `end-scroll' end of interaction with scroll bar |
| 5755 | |
| 5756 | The incoming input_event contains in its `part' member an |
| 5757 | index of type `enum scroll_bar_part' which we can use as an |
| 5758 | index in scroll_bar_parts to get the appropriate symbol. */ |
| 5759 | |
| 5760 | case SCROLL_BAR_CLICK_EVENT: |
| 5761 | { |
| 5762 | Lisp_Object position, head, window, portion_whole, part; |
| 5763 | |
| 5764 | window = event->frame_or_window; |
| 5765 | portion_whole = Fcons (event->x, event->y); |
| 5766 | part = *scroll_bar_parts[(int) event->part]; |
| 5767 | |
| 5768 | position |
| 5769 | = Fcons (window, |
| 5770 | Fcons (Qvertical_scroll_bar, |
| 5771 | Fcons (portion_whole, |
| 5772 | Fcons (make_number (event->timestamp), |
| 5773 | Fcons (part, Qnil))))); |
| 5774 | |
| 5775 | /* Always treat scroll bar events as clicks. */ |
| 5776 | event->modifiers |= click_modifier; |
| 5777 | event->modifiers &= ~up_modifier; |
| 5778 | |
| 5779 | if (event->code >= ASIZE (mouse_syms)) |
| 5780 | mouse_syms = larger_vector (mouse_syms, event->code + 1, Qnil); |
| 5781 | |
| 5782 | /* Get the symbol we should use for the mouse click. */ |
| 5783 | head = modify_event_symbol (event->code, |
| 5784 | event->modifiers, |
| 5785 | Qmouse_click, |
| 5786 | Vlispy_mouse_stem, |
| 5787 | NULL, &mouse_syms, |
| 5788 | XVECTOR (mouse_syms)->size); |
| 5789 | return Fcons (head, Fcons (position, Qnil)); |
| 5790 | } |
| 5791 | |
| 5792 | #endif /* USE_TOOLKIT_SCROLL_BARS */ |
| 5793 | |
| 5794 | #ifdef WINDOWSNT |
| 5795 | case W32_SCROLL_BAR_CLICK_EVENT: |
| 5796 | { |
| 5797 | int button = event->code; |
| 5798 | int is_double; |
| 5799 | Lisp_Object position; |
| 5800 | Lisp_Object *start_pos_ptr; |
| 5801 | Lisp_Object start_pos; |
| 5802 | |
| 5803 | { |
| 5804 | Lisp_Object window; |
| 5805 | Lisp_Object portion_whole; |
| 5806 | Lisp_Object part; |
| 5807 | |
| 5808 | window = event->frame_or_window; |
| 5809 | portion_whole = Fcons (event->x, event->y); |
| 5810 | part = *scroll_bar_parts[(int) event->part]; |
| 5811 | |
| 5812 | position |
| 5813 | = Fcons (window, |
| 5814 | Fcons (Qvertical_scroll_bar, |
| 5815 | Fcons (portion_whole, |
| 5816 | Fcons (make_number (event->timestamp), |
| 5817 | Fcons (part, Qnil))))); |
| 5818 | } |
| 5819 | |
| 5820 | /* Always treat W32 scroll bar events as clicks. */ |
| 5821 | event->modifiers |= click_modifier; |
| 5822 | |
| 5823 | { |
| 5824 | /* Get the symbol we should use for the mouse click. */ |
| 5825 | Lisp_Object head; |
| 5826 | |
| 5827 | head = modify_event_symbol (button, |
| 5828 | event->modifiers, |
| 5829 | Qmouse_click, |
| 5830 | Vlispy_mouse_stem, |
| 5831 | NULL, &mouse_syms, |
| 5832 | XVECTOR (mouse_syms)->size); |
| 5833 | return Fcons (head, |
| 5834 | Fcons (position, |
| 5835 | Qnil)); |
| 5836 | } |
| 5837 | } |
| 5838 | #endif /* WINDOWSNT */ |
| 5839 | |
| 5840 | case DRAG_N_DROP_EVENT: |
| 5841 | { |
| 5842 | FRAME_PTR f; |
| 5843 | Lisp_Object head, position; |
| 5844 | Lisp_Object files; |
| 5845 | |
| 5846 | f = XFRAME (event->frame_or_window); |
| 5847 | files = event->arg; |
| 5848 | |
| 5849 | /* Ignore mouse events that were made on frames that |
| 5850 | have been deleted. */ |
| 5851 | if (! FRAME_LIVE_P (f)) |
| 5852 | return Qnil; |
| 5853 | |
| 5854 | position = make_lispy_position (f, &event->x, &event->y, |
| 5855 | event->timestamp); |
| 5856 | |
| 5857 | head = modify_event_symbol (0, event->modifiers, |
| 5858 | Qdrag_n_drop, Qnil, |
| 5859 | lispy_drag_n_drop_names, |
| 5860 | &drag_n_drop_syms, 1); |
| 5861 | return Fcons (head, |
| 5862 | Fcons (position, |
| 5863 | Fcons (files, |
| 5864 | Qnil))); |
| 5865 | } |
| 5866 | #endif /* HAVE_MOUSE */ |
| 5867 | |
| 5868 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \ |
| 5869 | || defined (USE_GTK) |
| 5870 | case MENU_BAR_EVENT: |
| 5871 | if (EQ (event->arg, event->frame_or_window)) |
| 5872 | /* This is the prefix key. We translate this to |
| 5873 | `(menu_bar)' because the code in keyboard.c for menu |
| 5874 | events, which we use, relies on this. */ |
| 5875 | return Fcons (Qmenu_bar, Qnil); |
| 5876 | return event->arg; |
| 5877 | #endif |
| 5878 | |
| 5879 | case SELECT_WINDOW_EVENT: |
| 5880 | /* Make an event (select-window (WINDOW)). */ |
| 5881 | return Fcons (Qselect_window, |
| 5882 | Fcons (Fcons (event->frame_or_window, Qnil), |
| 5883 | Qnil)); |
| 5884 | |
| 5885 | case TOOL_BAR_EVENT: |
| 5886 | if (EQ (event->arg, event->frame_or_window)) |
| 5887 | /* This is the prefix key. We translate this to |
| 5888 | `(tool_bar)' because the code in keyboard.c for tool bar |
| 5889 | events, which we use, relies on this. */ |
| 5890 | return Fcons (Qtool_bar, Qnil); |
| 5891 | else if (SYMBOLP (event->arg)) |
| 5892 | return apply_modifiers (event->modifiers, event->arg); |
| 5893 | return event->arg; |
| 5894 | |
| 5895 | case USER_SIGNAL_EVENT: |
| 5896 | /* A user signal. */ |
| 5897 | return *lispy_user_signals[event->code]; |
| 5898 | |
| 5899 | case SAVE_SESSION_EVENT: |
| 5900 | return Qsave_session; |
| 5901 | |
| 5902 | #ifdef MAC_OS |
| 5903 | case MAC_APPLE_EVENT: |
| 5904 | { |
| 5905 | Lisp_Object spec[2]; |
| 5906 | |
| 5907 | spec[0] = event->x; |
| 5908 | spec[1] = event->y; |
| 5909 | return Fcons (Qmac_apple_event, |
| 5910 | Fcons (Fvector (2, spec), |
| 5911 | Fcons (event->arg, Qnil))); |
| 5912 | } |
| 5913 | #endif |
| 5914 | |
| 5915 | /* The 'kind' field of the event is something we don't recognize. */ |
| 5916 | default: |
| 5917 | abort (); |
| 5918 | } |
| 5919 | } |
| 5920 | |
| 5921 | #ifdef HAVE_MOUSE |
| 5922 | |
| 5923 | static Lisp_Object |
| 5924 | make_lispy_movement (frame, bar_window, part, x, y, time) |
| 5925 | FRAME_PTR frame; |
| 5926 | Lisp_Object bar_window; |
| 5927 | enum scroll_bar_part part; |
| 5928 | Lisp_Object x, y; |
| 5929 | unsigned long time; |
| 5930 | { |
| 5931 | /* Is it a scroll bar movement? */ |
| 5932 | if (frame && ! NILP (bar_window)) |
| 5933 | { |
| 5934 | Lisp_Object part_sym; |
| 5935 | |
| 5936 | part_sym = *scroll_bar_parts[(int) part]; |
| 5937 | return Fcons (Qscroll_bar_movement, |
| 5938 | (Fcons (Fcons (bar_window, |
| 5939 | Fcons (Qvertical_scroll_bar, |
| 5940 | Fcons (Fcons (x, y), |
| 5941 | Fcons (make_number (time), |
| 5942 | Fcons (part_sym, |
| 5943 | Qnil))))), |
| 5944 | Qnil))); |
| 5945 | } |
| 5946 | |
| 5947 | /* Or is it an ordinary mouse movement? */ |
| 5948 | else |
| 5949 | { |
| 5950 | Lisp_Object position; |
| 5951 | |
| 5952 | position = make_lispy_position (frame, &x, &y, time); |
| 5953 | |
| 5954 | return Fcons (Qmouse_movement, |
| 5955 | Fcons (position, |
| 5956 | Qnil)); |
| 5957 | } |
| 5958 | } |
| 5959 | |
| 5960 | #endif /* HAVE_MOUSE */ |
| 5961 | |
| 5962 | /* Construct a switch frame event. */ |
| 5963 | static Lisp_Object |
| 5964 | make_lispy_switch_frame (frame) |
| 5965 | Lisp_Object frame; |
| 5966 | { |
| 5967 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); |
| 5968 | } |
| 5969 | \f |
| 5970 | /* Manipulating modifiers. */ |
| 5971 | |
| 5972 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
| 5973 | |
| 5974 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
| 5975 | SYMBOL's name of the end of the modifiers; the string from this |
| 5976 | position is the unmodified symbol name. |
| 5977 | |
| 5978 | This doesn't use any caches. */ |
| 5979 | |
| 5980 | static int |
| 5981 | parse_modifiers_uncached (symbol, modifier_end) |
| 5982 | Lisp_Object symbol; |
| 5983 | int *modifier_end; |
| 5984 | { |
| 5985 | Lisp_Object name; |
| 5986 | int i; |
| 5987 | int modifiers; |
| 5988 | |
| 5989 | CHECK_SYMBOL (symbol); |
| 5990 | |
| 5991 | modifiers = 0; |
| 5992 | name = SYMBOL_NAME (symbol); |
| 5993 | |
| 5994 | for (i = 0; i+2 <= SBYTES (name); ) |
| 5995 | { |
| 5996 | int this_mod_end = 0; |
| 5997 | int this_mod = 0; |
| 5998 | |
| 5999 | /* See if the name continues with a modifier word. |
| 6000 | Check that the word appears, but don't check what follows it. |
| 6001 | Set this_mod and this_mod_end to record what we find. */ |
| 6002 | |
| 6003 | switch (SREF (name, i)) |
| 6004 | { |
| 6005 | #define SINGLE_LETTER_MOD(BIT) \ |
| 6006 | (this_mod_end = i + 1, this_mod = BIT) |
| 6007 | |
| 6008 | case 'A': |
| 6009 | SINGLE_LETTER_MOD (alt_modifier); |
| 6010 | break; |
| 6011 | |
| 6012 | case 'C': |
| 6013 | SINGLE_LETTER_MOD (ctrl_modifier); |
| 6014 | break; |
| 6015 | |
| 6016 | case 'H': |
| 6017 | SINGLE_LETTER_MOD (hyper_modifier); |
| 6018 | break; |
| 6019 | |
| 6020 | case 'M': |
| 6021 | SINGLE_LETTER_MOD (meta_modifier); |
| 6022 | break; |
| 6023 | |
| 6024 | case 'S': |
| 6025 | SINGLE_LETTER_MOD (shift_modifier); |
| 6026 | break; |
| 6027 | |
| 6028 | case 's': |
| 6029 | SINGLE_LETTER_MOD (super_modifier); |
| 6030 | break; |
| 6031 | |
| 6032 | #undef SINGLE_LETTER_MOD |
| 6033 | |
| 6034 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ |
| 6035 | if (i + LEN + 1 <= SBYTES (name) \ |
| 6036 | && ! strncmp (SDATA (name) + i, NAME, LEN)) \ |
| 6037 | { \ |
| 6038 | this_mod_end = i + LEN; \ |
| 6039 | this_mod = BIT; \ |
| 6040 | } |
| 6041 | |
| 6042 | case 'd': |
| 6043 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); |
| 6044 | MULTI_LETTER_MOD (down_modifier, "down", 4); |
| 6045 | MULTI_LETTER_MOD (double_modifier, "double", 6); |
| 6046 | break; |
| 6047 | |
| 6048 | case 't': |
| 6049 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); |
| 6050 | break; |
| 6051 | #undef MULTI_LETTER_MOD |
| 6052 | |
| 6053 | } |
| 6054 | |
| 6055 | /* If we found no modifier, stop looking for them. */ |
| 6056 | if (this_mod_end == 0) |
| 6057 | break; |
| 6058 | |
| 6059 | /* Check there is a dash after the modifier, so that it |
| 6060 | really is a modifier. */ |
| 6061 | if (this_mod_end >= SBYTES (name) |
| 6062 | || SREF (name, this_mod_end) != '-') |
| 6063 | break; |
| 6064 | |
| 6065 | /* This modifier is real; look for another. */ |
| 6066 | modifiers |= this_mod; |
| 6067 | i = this_mod_end + 1; |
| 6068 | } |
| 6069 | |
| 6070 | /* Should we include the `click' modifier? */ |
| 6071 | if (! (modifiers & (down_modifier | drag_modifier |
| 6072 | | double_modifier | triple_modifier)) |
| 6073 | && i + 7 == SBYTES (name) |
| 6074 | && strncmp (SDATA (name) + i, "mouse-", 6) == 0 |
| 6075 | && ('0' <= SREF (name, i + 6) && SREF (name, i + 6) <= '9')) |
| 6076 | modifiers |= click_modifier; |
| 6077 | |
| 6078 | if (modifier_end) |
| 6079 | *modifier_end = i; |
| 6080 | |
| 6081 | return modifiers; |
| 6082 | } |
| 6083 | |
| 6084 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
| 6085 | prepended to the string BASE[0..BASE_LEN-1]. |
| 6086 | This doesn't use any caches. */ |
| 6087 | static Lisp_Object |
| 6088 | apply_modifiers_uncached (modifiers, base, base_len, base_len_byte) |
| 6089 | int modifiers; |
| 6090 | char *base; |
| 6091 | int base_len, base_len_byte; |
| 6092 | { |
| 6093 | /* Since BASE could contain nulls, we can't use intern here; we have |
| 6094 | to use Fintern, which expects a genuine Lisp_String, and keeps a |
| 6095 | reference to it. */ |
| 6096 | char *new_mods |
| 6097 | = (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
| 6098 | int mod_len; |
| 6099 | |
| 6100 | { |
| 6101 | char *p = new_mods; |
| 6102 | |
| 6103 | /* Only the event queue may use the `up' modifier; it should always |
| 6104 | be turned into a click or drag event before presented to lisp code. */ |
| 6105 | if (modifiers & up_modifier) |
| 6106 | abort (); |
| 6107 | |
| 6108 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } |
| 6109 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } |
| 6110 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } |
| 6111 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } |
| 6112 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } |
| 6113 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
| 6114 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
| 6115 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } |
| 6116 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
| 6117 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } |
| 6118 | /* The click modifier is denoted by the absence of other modifiers. */ |
| 6119 | |
| 6120 | *p = '\0'; |
| 6121 | |
| 6122 | mod_len = p - new_mods; |
| 6123 | } |
| 6124 | |
| 6125 | { |
| 6126 | Lisp_Object new_name; |
| 6127 | |
| 6128 | new_name = make_uninit_multibyte_string (mod_len + base_len, |
| 6129 | mod_len + base_len_byte); |
| 6130 | bcopy (new_mods, SDATA (new_name), mod_len); |
| 6131 | bcopy (base, SDATA (new_name) + mod_len, base_len_byte); |
| 6132 | |
| 6133 | return Fintern (new_name, Qnil); |
| 6134 | } |
| 6135 | } |
| 6136 | |
| 6137 | |
| 6138 | static char *modifier_names[] = |
| 6139 | { |
| 6140 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
| 6141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 6142 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
| 6143 | }; |
| 6144 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
| 6145 | |
| 6146 | static Lisp_Object modifier_symbols; |
| 6147 | |
| 6148 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ |
| 6149 | static Lisp_Object |
| 6150 | lispy_modifier_list (modifiers) |
| 6151 | int modifiers; |
| 6152 | { |
| 6153 | Lisp_Object modifier_list; |
| 6154 | int i; |
| 6155 | |
| 6156 | modifier_list = Qnil; |
| 6157 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
| 6158 | if (modifiers & (1<<i)) |
| 6159 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
| 6160 | modifier_list); |
| 6161 | |
| 6162 | return modifier_list; |
| 6163 | } |
| 6164 | |
| 6165 | |
| 6166 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), |
| 6167 | where UNMODIFIED is the unmodified form of SYMBOL, |
| 6168 | MASK is the set of modifiers present in SYMBOL's name. |
| 6169 | This is similar to parse_modifiers_uncached, but uses the cache in |
| 6170 | SYMBOL's Qevent_symbol_element_mask property, and maintains the |
| 6171 | Qevent_symbol_elements property. */ |
| 6172 | |
| 6173 | Lisp_Object |
| 6174 | parse_modifiers (symbol) |
| 6175 | Lisp_Object symbol; |
| 6176 | { |
| 6177 | Lisp_Object elements; |
| 6178 | |
| 6179 | elements = Fget (symbol, Qevent_symbol_element_mask); |
| 6180 | if (CONSP (elements)) |
| 6181 | return elements; |
| 6182 | else |
| 6183 | { |
| 6184 | int end; |
| 6185 | int modifiers = parse_modifiers_uncached (symbol, &end); |
| 6186 | Lisp_Object unmodified; |
| 6187 | Lisp_Object mask; |
| 6188 | |
| 6189 | unmodified = Fintern (make_string (SDATA (SYMBOL_NAME (symbol)) + end, |
| 6190 | SBYTES (SYMBOL_NAME (symbol)) - end), |
| 6191 | Qnil); |
| 6192 | |
| 6193 | if (modifiers & ~INTMASK) |
| 6194 | abort (); |
| 6195 | XSETFASTINT (mask, modifiers); |
| 6196 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
| 6197 | |
| 6198 | /* Cache the parsing results on SYMBOL. */ |
| 6199 | Fput (symbol, Qevent_symbol_element_mask, |
| 6200 | elements); |
| 6201 | Fput (symbol, Qevent_symbol_elements, |
| 6202 | Fcons (unmodified, lispy_modifier_list (modifiers))); |
| 6203 | |
| 6204 | /* Since we know that SYMBOL is modifiers applied to unmodified, |
| 6205 | it would be nice to put that in unmodified's cache. |
| 6206 | But we can't, since we're not sure that parse_modifiers is |
| 6207 | canonical. */ |
| 6208 | |
| 6209 | return elements; |
| 6210 | } |
| 6211 | } |
| 6212 | |
| 6213 | /* Apply the modifiers MODIFIERS to the symbol BASE. |
| 6214 | BASE must be unmodified. |
| 6215 | |
| 6216 | This is like apply_modifiers_uncached, but uses BASE's |
| 6217 | Qmodifier_cache property, if present. It also builds |
| 6218 | Qevent_symbol_elements properties, since it has that info anyway. |
| 6219 | |
| 6220 | apply_modifiers copies the value of BASE's Qevent_kind property to |
| 6221 | the modified symbol. */ |
| 6222 | static Lisp_Object |
| 6223 | apply_modifiers (modifiers, base) |
| 6224 | int modifiers; |
| 6225 | Lisp_Object base; |
| 6226 | { |
| 6227 | Lisp_Object cache, index, entry, new_symbol; |
| 6228 | |
| 6229 | /* Mask out upper bits. We don't know where this value's been. */ |
| 6230 | modifiers &= INTMASK; |
| 6231 | |
| 6232 | /* The click modifier never figures into cache indices. */ |
| 6233 | cache = Fget (base, Qmodifier_cache); |
| 6234 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
| 6235 | entry = assq_no_quit (index, cache); |
| 6236 | |
| 6237 | if (CONSP (entry)) |
| 6238 | new_symbol = XCDR (entry); |
| 6239 | else |
| 6240 | { |
| 6241 | /* We have to create the symbol ourselves. */ |
| 6242 | new_symbol = apply_modifiers_uncached (modifiers, |
| 6243 | SDATA (SYMBOL_NAME (base)), |
| 6244 | SCHARS (SYMBOL_NAME (base)), |
| 6245 | SBYTES (SYMBOL_NAME (base))); |
| 6246 | |
| 6247 | /* Add the new symbol to the base's cache. */ |
| 6248 | entry = Fcons (index, new_symbol); |
| 6249 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); |
| 6250 | |
| 6251 | /* We have the parsing info now for free, so we could add it to |
| 6252 | the caches: |
| 6253 | XSETFASTINT (index, modifiers); |
| 6254 | Fput (new_symbol, Qevent_symbol_element_mask, |
| 6255 | Fcons (base, Fcons (index, Qnil))); |
| 6256 | Fput (new_symbol, Qevent_symbol_elements, |
| 6257 | Fcons (base, lispy_modifier_list (modifiers))); |
| 6258 | Sadly, this is only correct if `base' is indeed a base event, |
| 6259 | which is not necessarily the case. -stef */ |
| 6260 | } |
| 6261 | |
| 6262 | /* Make sure this symbol is of the same kind as BASE. |
| 6263 | |
| 6264 | You'd think we could just set this once and for all when we |
| 6265 | intern the symbol above, but reorder_modifiers may call us when |
| 6266 | BASE's property isn't set right; we can't assume that just |
| 6267 | because it has a Qmodifier_cache property it must have its |
| 6268 | Qevent_kind set right as well. */ |
| 6269 | if (NILP (Fget (new_symbol, Qevent_kind))) |
| 6270 | { |
| 6271 | Lisp_Object kind; |
| 6272 | |
| 6273 | kind = Fget (base, Qevent_kind); |
| 6274 | if (! NILP (kind)) |
| 6275 | Fput (new_symbol, Qevent_kind, kind); |
| 6276 | } |
| 6277 | |
| 6278 | return new_symbol; |
| 6279 | } |
| 6280 | |
| 6281 | |
| 6282 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), |
| 6283 | return a symbol with the modifiers placed in the canonical order. |
| 6284 | Canonical order is alphabetical, except for down and drag, which |
| 6285 | always come last. The 'click' modifier is never written out. |
| 6286 | |
| 6287 | Fdefine_key calls this to make sure that (for example) C-M-foo |
| 6288 | and M-C-foo end up being equivalent in the keymap. */ |
| 6289 | |
| 6290 | Lisp_Object |
| 6291 | reorder_modifiers (symbol) |
| 6292 | Lisp_Object symbol; |
| 6293 | { |
| 6294 | /* It's hopefully okay to write the code this way, since everything |
| 6295 | will soon be in caches, and no consing will be done at all. */ |
| 6296 | Lisp_Object parsed; |
| 6297 | |
| 6298 | parsed = parse_modifiers (symbol); |
| 6299 | return apply_modifiers ((int) XINT (XCAR (XCDR (parsed))), |
| 6300 | XCAR (parsed)); |
| 6301 | } |
| 6302 | |
| 6303 | |
| 6304 | /* For handling events, we often want to produce a symbol whose name |
| 6305 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached |
| 6306 | to some base, like the name of a function key or mouse button. |
| 6307 | modify_event_symbol produces symbols of this sort. |
| 6308 | |
| 6309 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] |
| 6310 | is the name of the i'th symbol. TABLE_SIZE is the number of elements |
| 6311 | in the table. |
| 6312 | |
| 6313 | Alternatively, NAME_ALIST_OR_STEM is either an alist mapping codes |
| 6314 | into symbol names, or a string specifying a name stem used to |
| 6315 | construct a symbol name or the form `STEM-N', where N is the decimal |
| 6316 | representation of SYMBOL_NUM. NAME_ALIST_OR_STEM is used if it is |
| 6317 | non-nil; otherwise NAME_TABLE is used. |
| 6318 | |
| 6319 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
| 6320 | persist between calls to modify_event_symbol that it can use to |
| 6321 | store a cache of the symbols it's generated for this NAME_TABLE |
| 6322 | before. The object stored there may be a vector or an alist. |
| 6323 | |
| 6324 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. |
| 6325 | |
| 6326 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
| 6327 | whose prefixes should be applied to the symbol name. |
| 6328 | |
| 6329 | SYMBOL_KIND is the value to be placed in the event_kind property of |
| 6330 | the returned symbol. |
| 6331 | |
| 6332 | The symbols we create are supposed to have an |
| 6333 | `event-symbol-elements' property, which lists the modifiers present |
| 6334 | in the symbol's name. */ |
| 6335 | |
| 6336 | static Lisp_Object |
| 6337 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist_or_stem, |
| 6338 | name_table, symbol_table, table_size) |
| 6339 | int symbol_num; |
| 6340 | unsigned modifiers; |
| 6341 | Lisp_Object symbol_kind; |
| 6342 | Lisp_Object name_alist_or_stem; |
| 6343 | char **name_table; |
| 6344 | Lisp_Object *symbol_table; |
| 6345 | unsigned int table_size; |
| 6346 | { |
| 6347 | Lisp_Object value; |
| 6348 | Lisp_Object symbol_int; |
| 6349 | |
| 6350 | /* Get rid of the "vendor-specific" bit here. */ |
| 6351 | XSETINT (symbol_int, symbol_num & 0xffffff); |
| 6352 | |
| 6353 | /* Is this a request for a valid symbol? */ |
| 6354 | if (symbol_num < 0 || symbol_num >= table_size) |
| 6355 | return Qnil; |
| 6356 | |
| 6357 | if (CONSP (*symbol_table)) |
| 6358 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); |
| 6359 | |
| 6360 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
| 6361 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
| 6362 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
| 6363 | we've never used that symbol before. */ |
| 6364 | else |
| 6365 | { |
| 6366 | if (! VECTORP (*symbol_table) |
| 6367 | || XVECTOR (*symbol_table)->size != table_size) |
| 6368 | { |
| 6369 | Lisp_Object size; |
| 6370 | |
| 6371 | XSETFASTINT (size, table_size); |
| 6372 | *symbol_table = Fmake_vector (size, Qnil); |
| 6373 | } |
| 6374 | |
| 6375 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
| 6376 | } |
| 6377 | |
| 6378 | /* Have we already used this symbol before? */ |
| 6379 | if (NILP (value)) |
| 6380 | { |
| 6381 | /* No; let's create it. */ |
| 6382 | if (CONSP (name_alist_or_stem)) |
| 6383 | value = Fcdr_safe (Fassq (symbol_int, name_alist_or_stem)); |
| 6384 | else if (STRINGP (name_alist_or_stem)) |
| 6385 | { |
| 6386 | int len = SBYTES (name_alist_or_stem); |
| 6387 | char *buf = (char *) alloca (len + 50); |
| 6388 | sprintf (buf, "%s-%ld", SDATA (name_alist_or_stem), |
| 6389 | (long) XINT (symbol_int) + 1); |
| 6390 | value = intern (buf); |
| 6391 | } |
| 6392 | else if (name_table != 0 && name_table[symbol_num]) |
| 6393 | value = intern (name_table[symbol_num]); |
| 6394 | |
| 6395 | #ifdef HAVE_WINDOW_SYSTEM |
| 6396 | if (NILP (value)) |
| 6397 | { |
| 6398 | char *name = x_get_keysym_name (symbol_num); |
| 6399 | if (name) |
| 6400 | value = intern (name); |
| 6401 | } |
| 6402 | #endif |
| 6403 | |
| 6404 | if (NILP (value)) |
| 6405 | { |
| 6406 | char buf[20]; |
| 6407 | sprintf (buf, "key-%d", symbol_num); |
| 6408 | value = intern (buf); |
| 6409 | } |
| 6410 | |
| 6411 | if (CONSP (*symbol_table)) |
| 6412 | *symbol_table = Fcons (Fcons (symbol_int, value), *symbol_table); |
| 6413 | else |
| 6414 | XVECTOR (*symbol_table)->contents[symbol_num] = value; |
| 6415 | |
| 6416 | /* Fill in the cache entries for this symbol; this also |
| 6417 | builds the Qevent_symbol_elements property, which the user |
| 6418 | cares about. */ |
| 6419 | apply_modifiers (modifiers & click_modifier, value); |
| 6420 | Fput (value, Qevent_kind, symbol_kind); |
| 6421 | } |
| 6422 | |
| 6423 | /* Apply modifiers to that symbol. */ |
| 6424 | return apply_modifiers (modifiers, value); |
| 6425 | } |
| 6426 | \f |
| 6427 | /* Convert a list that represents an event type, |
| 6428 | such as (ctrl meta backspace), into the usual representation of that |
| 6429 | event type as a number or a symbol. */ |
| 6430 | |
| 6431 | DEFUN ("event-convert-list", Fevent_convert_list, Sevent_convert_list, 1, 1, 0, |
| 6432 | doc: /* Convert the event description list EVENT-DESC to an event type. |
| 6433 | EVENT-DESC should contain one base event type (a character or symbol) |
| 6434 | and zero or more modifier names (control, meta, hyper, super, shift, alt, |
| 6435 | drag, down, double or triple). The base must be last. |
| 6436 | The return value is an event type (a character or symbol) which |
| 6437 | has the same base event type and all the specified modifiers. */) |
| 6438 | (event_desc) |
| 6439 | Lisp_Object event_desc; |
| 6440 | { |
| 6441 | Lisp_Object base; |
| 6442 | int modifiers = 0; |
| 6443 | Lisp_Object rest; |
| 6444 | |
| 6445 | base = Qnil; |
| 6446 | rest = event_desc; |
| 6447 | while (CONSP (rest)) |
| 6448 | { |
| 6449 | Lisp_Object elt; |
| 6450 | int this = 0; |
| 6451 | |
| 6452 | elt = XCAR (rest); |
| 6453 | rest = XCDR (rest); |
| 6454 | |
| 6455 | /* Given a symbol, see if it is a modifier name. */ |
| 6456 | if (SYMBOLP (elt) && CONSP (rest)) |
| 6457 | this = parse_solitary_modifier (elt); |
| 6458 | |
| 6459 | if (this != 0) |
| 6460 | modifiers |= this; |
| 6461 | else if (!NILP (base)) |
| 6462 | error ("Two bases given in one event"); |
| 6463 | else |
| 6464 | base = elt; |
| 6465 | |
| 6466 | } |
| 6467 | |
| 6468 | /* Let the symbol A refer to the character A. */ |
| 6469 | if (SYMBOLP (base) && SCHARS (SYMBOL_NAME (base)) == 1) |
| 6470 | XSETINT (base, SREF (SYMBOL_NAME (base), 0)); |
| 6471 | |
| 6472 | if (INTEGERP (base)) |
| 6473 | { |
| 6474 | /* Turn (shift a) into A. */ |
| 6475 | if ((modifiers & shift_modifier) != 0 |
| 6476 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) |
| 6477 | { |
| 6478 | XSETINT (base, XINT (base) - ('a' - 'A')); |
| 6479 | modifiers &= ~shift_modifier; |
| 6480 | } |
| 6481 | |
| 6482 | /* Turn (control a) into C-a. */ |
| 6483 | if (modifiers & ctrl_modifier) |
| 6484 | return make_number ((modifiers & ~ctrl_modifier) |
| 6485 | | make_ctrl_char (XINT (base))); |
| 6486 | else |
| 6487 | return make_number (modifiers | XINT (base)); |
| 6488 | } |
| 6489 | else if (SYMBOLP (base)) |
| 6490 | return apply_modifiers (modifiers, base); |
| 6491 | else |
| 6492 | { |
| 6493 | error ("Invalid base event"); |
| 6494 | return Qnil; |
| 6495 | } |
| 6496 | } |
| 6497 | |
| 6498 | /* Try to recognize SYMBOL as a modifier name. |
| 6499 | Return the modifier flag bit, or 0 if not recognized. */ |
| 6500 | |
| 6501 | static int |
| 6502 | parse_solitary_modifier (symbol) |
| 6503 | Lisp_Object symbol; |
| 6504 | { |
| 6505 | Lisp_Object name = SYMBOL_NAME (symbol); |
| 6506 | |
| 6507 | switch (SREF (name, 0)) |
| 6508 | { |
| 6509 | #define SINGLE_LETTER_MOD(BIT) \ |
| 6510 | if (SBYTES (name) == 1) \ |
| 6511 | return BIT; |
| 6512 | |
| 6513 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ |
| 6514 | if (LEN == SBYTES (name) \ |
| 6515 | && ! strncmp (SDATA (name), NAME, LEN)) \ |
| 6516 | return BIT; |
| 6517 | |
| 6518 | case 'A': |
| 6519 | SINGLE_LETTER_MOD (alt_modifier); |
| 6520 | break; |
| 6521 | |
| 6522 | case 'a': |
| 6523 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); |
| 6524 | break; |
| 6525 | |
| 6526 | case 'C': |
| 6527 | SINGLE_LETTER_MOD (ctrl_modifier); |
| 6528 | break; |
| 6529 | |
| 6530 | case 'c': |
| 6531 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); |
| 6532 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); |
| 6533 | break; |
| 6534 | |
| 6535 | case 'H': |
| 6536 | SINGLE_LETTER_MOD (hyper_modifier); |
| 6537 | break; |
| 6538 | |
| 6539 | case 'h': |
| 6540 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); |
| 6541 | break; |
| 6542 | |
| 6543 | case 'M': |
| 6544 | SINGLE_LETTER_MOD (meta_modifier); |
| 6545 | break; |
| 6546 | |
| 6547 | case 'm': |
| 6548 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); |
| 6549 | break; |
| 6550 | |
| 6551 | case 'S': |
| 6552 | SINGLE_LETTER_MOD (shift_modifier); |
| 6553 | break; |
| 6554 | |
| 6555 | case 's': |
| 6556 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); |
| 6557 | MULTI_LETTER_MOD (super_modifier, "super", 5); |
| 6558 | SINGLE_LETTER_MOD (super_modifier); |
| 6559 | break; |
| 6560 | |
| 6561 | case 'd': |
| 6562 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); |
| 6563 | MULTI_LETTER_MOD (down_modifier, "down", 4); |
| 6564 | MULTI_LETTER_MOD (double_modifier, "double", 6); |
| 6565 | break; |
| 6566 | |
| 6567 | case 't': |
| 6568 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); |
| 6569 | break; |
| 6570 | |
| 6571 | #undef SINGLE_LETTER_MOD |
| 6572 | #undef MULTI_LETTER_MOD |
| 6573 | } |
| 6574 | |
| 6575 | return 0; |
| 6576 | } |
| 6577 | |
| 6578 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
| 6579 | Such a list is not valid as an event, |
| 6580 | but it can be a Lucid-style event type list. */ |
| 6581 | |
| 6582 | int |
| 6583 | lucid_event_type_list_p (object) |
| 6584 | Lisp_Object object; |
| 6585 | { |
| 6586 | Lisp_Object tail; |
| 6587 | |
| 6588 | if (! CONSP (object)) |
| 6589 | return 0; |
| 6590 | |
| 6591 | if (EQ (XCAR (object), Qhelp_echo) |
| 6592 | || EQ (XCAR (object), Qvertical_line) |
| 6593 | || EQ (XCAR (object), Qmode_line) |
| 6594 | || EQ (XCAR (object), Qheader_line)) |
| 6595 | return 0; |
| 6596 | |
| 6597 | for (tail = object; CONSP (tail); tail = XCDR (tail)) |
| 6598 | { |
| 6599 | Lisp_Object elt; |
| 6600 | elt = XCAR (tail); |
| 6601 | if (! (INTEGERP (elt) || SYMBOLP (elt))) |
| 6602 | return 0; |
| 6603 | } |
| 6604 | |
| 6605 | return NILP (tail); |
| 6606 | } |
| 6607 | \f |
| 6608 | /* Store into *addr a value nonzero if terminal input chars are available. |
| 6609 | Serves the purpose of ioctl (0, FIONREAD, addr) |
| 6610 | but works even if FIONREAD does not exist. |
| 6611 | (In fact, this may actually read some input.) |
| 6612 | |
| 6613 | If READABLE_EVENTS_DO_TIMERS_NOW is set in FLAGS, actually run |
| 6614 | timer events that are ripe. |
| 6615 | If READABLE_EVENTS_FILTER_EVENTS is set in FLAGS, ignore internal |
| 6616 | events (FOCUS_IN_EVENT). |
| 6617 | If READABLE_EVENTS_IGNORE_SQUEEZABLES is set in FLAGS, ignore mouse |
| 6618 | movements and toolkit scroll bar thumb drags. */ |
| 6619 | |
| 6620 | static void |
| 6621 | get_input_pending (addr, flags) |
| 6622 | int *addr; |
| 6623 | int flags; |
| 6624 | { |
| 6625 | /* First of all, have we already counted some input? */ |
| 6626 | *addr = (!NILP (Vquit_flag) || readable_events (flags)); |
| 6627 | |
| 6628 | /* If input is being read as it arrives, and we have none, there is none. */ |
| 6629 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) |
| 6630 | return; |
| 6631 | |
| 6632 | /* Try to read some input and see how much we get. */ |
| 6633 | gobble_input (0); |
| 6634 | *addr = (!NILP (Vquit_flag) || readable_events (flags)); |
| 6635 | } |
| 6636 | |
| 6637 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
| 6638 | |
| 6639 | void |
| 6640 | gobble_input (expected) |
| 6641 | int expected; |
| 6642 | { |
| 6643 | #ifndef VMS |
| 6644 | #ifdef SIGIO |
| 6645 | if (interrupt_input) |
| 6646 | { |
| 6647 | SIGMASKTYPE mask; |
| 6648 | mask = sigblock (sigmask (SIGIO)); |
| 6649 | read_avail_input (expected); |
| 6650 | sigsetmask (mask); |
| 6651 | } |
| 6652 | else |
| 6653 | #ifdef POLL_FOR_INPUT |
| 6654 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) |
| 6655 | { |
| 6656 | SIGMASKTYPE mask; |
| 6657 | mask = sigblock (sigmask (SIGALRM)); |
| 6658 | read_avail_input (expected); |
| 6659 | sigsetmask (mask); |
| 6660 | } |
| 6661 | else |
| 6662 | #endif |
| 6663 | #endif |
| 6664 | read_avail_input (expected); |
| 6665 | #endif |
| 6666 | } |
| 6667 | |
| 6668 | /* Put a BUFFER_SWITCH_EVENT in the buffer |
| 6669 | so that read_key_sequence will notice the new current buffer. */ |
| 6670 | |
| 6671 | void |
| 6672 | record_asynch_buffer_change () |
| 6673 | { |
| 6674 | struct input_event event; |
| 6675 | Lisp_Object tem; |
| 6676 | EVENT_INIT (event); |
| 6677 | |
| 6678 | event.kind = BUFFER_SWITCH_EVENT; |
| 6679 | event.frame_or_window = Qnil; |
| 6680 | event.arg = Qnil; |
| 6681 | |
| 6682 | #ifdef subprocesses |
| 6683 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
| 6684 | The purpose of the event is to make read_key_sequence look up the |
| 6685 | keymaps again. If we aren't in read_key_sequence, we don't need one, |
| 6686 | and the event could cause trouble by messing up (input-pending-p). */ |
| 6687 | tem = Fwaiting_for_user_input_p (); |
| 6688 | if (NILP (tem)) |
| 6689 | return; |
| 6690 | #else |
| 6691 | /* We never need these events if we have no asynchronous subprocesses. */ |
| 6692 | return; |
| 6693 | #endif |
| 6694 | |
| 6695 | /* Make sure no interrupt happens while storing the event. */ |
| 6696 | #ifdef SIGIO |
| 6697 | if (interrupt_input) |
| 6698 | { |
| 6699 | SIGMASKTYPE mask; |
| 6700 | mask = sigblock (sigmask (SIGIO)); |
| 6701 | kbd_buffer_store_event (&event); |
| 6702 | sigsetmask (mask); |
| 6703 | } |
| 6704 | else |
| 6705 | #endif |
| 6706 | { |
| 6707 | stop_polling (); |
| 6708 | kbd_buffer_store_event (&event); |
| 6709 | start_polling (); |
| 6710 | } |
| 6711 | } |
| 6712 | \f |
| 6713 | #ifndef VMS |
| 6714 | |
| 6715 | /* Read any terminal input already buffered up by the system |
| 6716 | into the kbd_buffer, but do not wait. |
| 6717 | |
| 6718 | EXPECTED should be nonzero if the caller knows there is some input. |
| 6719 | |
| 6720 | Except on VMS, all input is read by this function. |
| 6721 | If interrupt_input is nonzero, this function MUST be called |
| 6722 | only when SIGIO is blocked. |
| 6723 | |
| 6724 | Returns the number of keyboard chars read, or -1 meaning |
| 6725 | this is a bad time to try to read input. */ |
| 6726 | |
| 6727 | static int |
| 6728 | read_avail_input (expected) |
| 6729 | int expected; |
| 6730 | { |
| 6731 | register int i; |
| 6732 | int nread = 0; |
| 6733 | |
| 6734 | if (read_socket_hook) |
| 6735 | { |
| 6736 | int nr; |
| 6737 | struct input_event hold_quit; |
| 6738 | |
| 6739 | EVENT_INIT (hold_quit); |
| 6740 | hold_quit.kind = NO_EVENT; |
| 6741 | |
| 6742 | /* No need for FIONREAD or fcntl; just say don't wait. */ |
| 6743 | while (nr = (*read_socket_hook) (input_fd, expected, &hold_quit), nr > 0) |
| 6744 | { |
| 6745 | nread += nr; |
| 6746 | expected = 0; |
| 6747 | } |
| 6748 | if (hold_quit.kind != NO_EVENT) |
| 6749 | kbd_buffer_store_event (&hold_quit); |
| 6750 | } |
| 6751 | else |
| 6752 | { |
| 6753 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
| 6754 | the kbd_buffer can really hold. That may prevent loss |
| 6755 | of characters on some systems when input is stuffed at us. */ |
| 6756 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; |
| 6757 | int n_to_read; |
| 6758 | |
| 6759 | /* Determine how many characters we should *try* to read. */ |
| 6760 | #ifdef WINDOWSNT |
| 6761 | return 0; |
| 6762 | #else /* not WINDOWSNT */ |
| 6763 | #ifdef MSDOS |
| 6764 | n_to_read = dos_keysns (); |
| 6765 | if (n_to_read == 0) |
| 6766 | return 0; |
| 6767 | #else /* not MSDOS */ |
| 6768 | #ifdef FIONREAD |
| 6769 | /* Find out how much input is available. */ |
| 6770 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
| 6771 | /* Formerly simply reported no input, but that sometimes led to |
| 6772 | a failure of Emacs to terminate. |
| 6773 | SIGHUP seems appropriate if we can't reach the terminal. */ |
| 6774 | /* ??? Is it really right to send the signal just to this process |
| 6775 | rather than to the whole process group? |
| 6776 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ |
| 6777 | { |
| 6778 | if (! noninteractive) |
| 6779 | kill (getpid (), SIGHUP); |
| 6780 | else |
| 6781 | n_to_read = 0; |
| 6782 | } |
| 6783 | if (n_to_read == 0) |
| 6784 | return 0; |
| 6785 | if (n_to_read > sizeof cbuf) |
| 6786 | n_to_read = sizeof cbuf; |
| 6787 | #else /* no FIONREAD */ |
| 6788 | #if defined (USG) || defined (DGUX) || defined(CYGWIN) |
| 6789 | /* Read some input if available, but don't wait. */ |
| 6790 | n_to_read = sizeof cbuf; |
| 6791 | fcntl (input_fd, F_SETFL, O_NDELAY); |
| 6792 | #else |
| 6793 | you lose; |
| 6794 | #endif |
| 6795 | #endif |
| 6796 | #endif /* not MSDOS */ |
| 6797 | #endif /* not WINDOWSNT */ |
| 6798 | |
| 6799 | /* Now read; for one reason or another, this will not block. |
| 6800 | NREAD is set to the number of chars read. */ |
| 6801 | do |
| 6802 | { |
| 6803 | #ifdef MSDOS |
| 6804 | cbuf[0] = dos_keyread (); |
| 6805 | nread = 1; |
| 6806 | #else |
| 6807 | nread = emacs_read (input_fd, cbuf, n_to_read); |
| 6808 | #endif |
| 6809 | /* POSIX infers that processes which are not in the session leader's |
| 6810 | process group won't get SIGHUP's at logout time. BSDI adheres to |
| 6811 | this part standard and returns -1 from read (0) with errno==EIO |
| 6812 | when the control tty is taken away. |
| 6813 | Jeffrey Honig <jch@bsdi.com> says this is generally safe. */ |
| 6814 | if (nread == -1 && errno == EIO) |
| 6815 | kill (0, SIGHUP); |
| 6816 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
| 6817 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
| 6818 | This looks incorrect, but it isn't, because _BSD causes |
| 6819 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, |
| 6820 | and that causes a value other than 0 when there is no input. */ |
| 6821 | if (nread == 0) |
| 6822 | kill (0, SIGHUP); |
| 6823 | #endif |
| 6824 | } |
| 6825 | while ( |
| 6826 | /* We used to retry the read if it was interrupted. |
| 6827 | But this does the wrong thing when O_NDELAY causes |
| 6828 | an EAGAIN error. Does anybody know of a situation |
| 6829 | where a retry is actually needed? */ |
| 6830 | #if 0 |
| 6831 | nread < 0 && (errno == EAGAIN |
| 6832 | #ifdef EFAULT |
| 6833 | || errno == EFAULT |
| 6834 | #endif |
| 6835 | #ifdef EBADSLT |
| 6836 | || errno == EBADSLT |
| 6837 | #endif |
| 6838 | ) |
| 6839 | #else |
| 6840 | 0 |
| 6841 | #endif |
| 6842 | ); |
| 6843 | |
| 6844 | #ifndef FIONREAD |
| 6845 | #if defined (USG) || defined (DGUX) || defined (CYGWIN) |
| 6846 | fcntl (input_fd, F_SETFL, 0); |
| 6847 | #endif /* USG or DGUX or CYGWIN */ |
| 6848 | #endif /* no FIONREAD */ |
| 6849 | for (i = 0; i < nread; i++) |
| 6850 | { |
| 6851 | struct input_event buf; |
| 6852 | EVENT_INIT (buf); |
| 6853 | buf.kind = ASCII_KEYSTROKE_EVENT; |
| 6854 | buf.modifiers = 0; |
| 6855 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
| 6856 | buf.modifiers = meta_modifier; |
| 6857 | if (meta_key != 2) |
| 6858 | cbuf[i] &= ~0x80; |
| 6859 | |
| 6860 | buf.code = cbuf[i]; |
| 6861 | buf.frame_or_window = selected_frame; |
| 6862 | buf.arg = Qnil; |
| 6863 | |
| 6864 | kbd_buffer_store_event (&buf); |
| 6865 | /* Don't look at input that follows a C-g too closely. |
| 6866 | This reduces lossage due to autorepeat on C-g. */ |
| 6867 | if (buf.kind == ASCII_KEYSTROKE_EVENT |
| 6868 | && buf.code == quit_char) |
| 6869 | break; |
| 6870 | } |
| 6871 | } |
| 6872 | |
| 6873 | return nread; |
| 6874 | } |
| 6875 | #endif /* not VMS */ |
| 6876 | \f |
| 6877 | void |
| 6878 | handle_async_input () |
| 6879 | { |
| 6880 | #ifdef BSD4_1 |
| 6881 | extern int select_alarmed; |
| 6882 | #endif |
| 6883 | |
| 6884 | interrupt_input_pending = 0; |
| 6885 | |
| 6886 | while (1) |
| 6887 | { |
| 6888 | int nread; |
| 6889 | nread = read_avail_input (1); |
| 6890 | /* -1 means it's not ok to read the input now. |
| 6891 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. |
| 6892 | 0 means there was no keyboard input available. */ |
| 6893 | if (nread <= 0) |
| 6894 | break; |
| 6895 | |
| 6896 | #ifdef BSD4_1 |
| 6897 | select_alarmed = 1; /* Force the select emulator back to life */ |
| 6898 | #endif |
| 6899 | } |
| 6900 | } |
| 6901 | |
| 6902 | #ifdef SIGIO /* for entire page */ |
| 6903 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
| 6904 | |
| 6905 | static SIGTYPE |
| 6906 | input_available_signal (signo) |
| 6907 | int signo; |
| 6908 | { |
| 6909 | /* Must preserve main program's value of errno. */ |
| 6910 | int old_errno = errno; |
| 6911 | #if defined (USG) && !defined (POSIX_SIGNALS) |
| 6912 | /* USG systems forget handlers when they are used; |
| 6913 | must reestablish each time */ |
| 6914 | signal (signo, input_available_signal); |
| 6915 | #endif /* USG */ |
| 6916 | |
| 6917 | #ifdef BSD4_1 |
| 6918 | sigisheld (SIGIO); |
| 6919 | #endif |
| 6920 | |
| 6921 | #ifdef SYNC_INPUT |
| 6922 | interrupt_input_pending = 1; |
| 6923 | #else |
| 6924 | SIGNAL_THREAD_CHECK (signo); |
| 6925 | #endif |
| 6926 | |
| 6927 | if (input_available_clear_time) |
| 6928 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); |
| 6929 | |
| 6930 | #ifndef SYNC_INPUT |
| 6931 | handle_async_input (); |
| 6932 | #endif |
| 6933 | |
| 6934 | #ifdef BSD4_1 |
| 6935 | sigfree (); |
| 6936 | #endif |
| 6937 | errno = old_errno; |
| 6938 | } |
| 6939 | #endif /* SIGIO */ |
| 6940 | |
| 6941 | /* Send ourselves a SIGIO. |
| 6942 | |
| 6943 | This function exists so that the UNBLOCK_INPUT macro in |
| 6944 | blockinput.h can have some way to take care of input we put off |
| 6945 | dealing with, without assuming that every file which uses |
| 6946 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ |
| 6947 | void |
| 6948 | reinvoke_input_signal () |
| 6949 | { |
| 6950 | #ifdef SIGIO |
| 6951 | handle_async_input (); |
| 6952 | #endif |
| 6953 | } |
| 6954 | |
| 6955 | |
| 6956 | \f |
| 6957 | static void menu_bar_item P_ ((Lisp_Object, Lisp_Object, Lisp_Object, void*)); |
| 6958 | static Lisp_Object menu_bar_one_keymap_changed_items; |
| 6959 | |
| 6960 | /* These variables hold the vector under construction within |
| 6961 | menu_bar_items and its subroutines, and the current index |
| 6962 | for storing into that vector. */ |
| 6963 | static Lisp_Object menu_bar_items_vector; |
| 6964 | static int menu_bar_items_index; |
| 6965 | |
| 6966 | /* Return a vector of menu items for a menu bar, appropriate |
| 6967 | to the current buffer. Each item has three elements in the vector: |
| 6968 | KEY STRING MAPLIST. |
| 6969 | |
| 6970 | OLD is an old vector we can optionally reuse, or nil. */ |
| 6971 | |
| 6972 | Lisp_Object |
| 6973 | menu_bar_items (old) |
| 6974 | Lisp_Object old; |
| 6975 | { |
| 6976 | /* The number of keymaps we're scanning right now, and the number of |
| 6977 | keymaps we have allocated space for. */ |
| 6978 | int nmaps; |
| 6979 | |
| 6980 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
| 6981 | in the current keymaps, or nil where it is not a prefix. */ |
| 6982 | Lisp_Object *maps; |
| 6983 | |
| 6984 | Lisp_Object def, tail; |
| 6985 | |
| 6986 | Lisp_Object result; |
| 6987 | |
| 6988 | int mapno; |
| 6989 | Lisp_Object oquit; |
| 6990 | |
| 6991 | int i; |
| 6992 | |
| 6993 | /* In order to build the menus, we need to call the keymap |
| 6994 | accessors. They all call QUIT. But this function is called |
| 6995 | during redisplay, during which a quit is fatal. So inhibit |
| 6996 | quitting while building the menus. |
| 6997 | We do this instead of specbind because (1) errors will clear it anyway |
| 6998 | and (2) this avoids risk of specpdl overflow. */ |
| 6999 | oquit = Vinhibit_quit; |
| 7000 | Vinhibit_quit = Qt; |
| 7001 | |
| 7002 | if (!NILP (old)) |
| 7003 | menu_bar_items_vector = old; |
| 7004 | else |
| 7005 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); |
| 7006 | menu_bar_items_index = 0; |
| 7007 | |
| 7008 | /* Build our list of keymaps. |
| 7009 | If we recognize a function key and replace its escape sequence in |
| 7010 | keybuf with its symbol, or if the sequence starts with a mouse |
| 7011 | click and we need to switch buffers, we jump back here to rebuild |
| 7012 | the initial keymaps from the current buffer. */ |
| 7013 | { |
| 7014 | Lisp_Object *tmaps; |
| 7015 | |
| 7016 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
| 7017 | if (!NILP (Voverriding_local_map_menu_flag)) |
| 7018 | { |
| 7019 | /* Yes, use them (if non-nil) as well as the global map. */ |
| 7020 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); |
| 7021 | nmaps = 0; |
| 7022 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) |
| 7023 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; |
| 7024 | if (!NILP (Voverriding_local_map)) |
| 7025 | maps[nmaps++] = Voverriding_local_map; |
| 7026 | } |
| 7027 | else |
| 7028 | { |
| 7029 | /* No, so use major and minor mode keymaps and keymap property. |
| 7030 | Note that menu-bar bindings in the local-map and keymap |
| 7031 | properties may not work reliable, as they are only |
| 7032 | recognized when the menu-bar (or mode-line) is updated, |
| 7033 | which does not normally happen after every command. */ |
| 7034 | Lisp_Object tem; |
| 7035 | int nminor; |
| 7036 | nminor = current_minor_maps (NULL, &tmaps); |
| 7037 | maps = (Lisp_Object *) alloca ((nminor + 3) * sizeof (maps[0])); |
| 7038 | nmaps = 0; |
| 7039 | if (tem = get_local_map (PT, current_buffer, Qkeymap), !NILP (tem)) |
| 7040 | maps[nmaps++] = tem; |
| 7041 | bcopy (tmaps, (void *) (maps + nmaps), nminor * sizeof (maps[0])); |
| 7042 | nmaps += nminor; |
| 7043 | maps[nmaps++] = get_local_map (PT, current_buffer, Qlocal_map); |
| 7044 | } |
| 7045 | maps[nmaps++] = current_global_map; |
| 7046 | } |
| 7047 | |
| 7048 | /* Look up in each map the dummy prefix key `menu-bar'. */ |
| 7049 | |
| 7050 | result = Qnil; |
| 7051 | |
| 7052 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
| 7053 | if (!NILP (maps[mapno])) |
| 7054 | { |
| 7055 | def = get_keymap (access_keymap (maps[mapno], Qmenu_bar, 1, 0, 1), |
| 7056 | 0, 1); |
| 7057 | if (CONSP (def)) |
| 7058 | { |
| 7059 | menu_bar_one_keymap_changed_items = Qnil; |
| 7060 | map_keymap (def, menu_bar_item, Qnil, NULL, 1); |
| 7061 | } |
| 7062 | } |
| 7063 | |
| 7064 | /* Move to the end those items that should be at the end. */ |
| 7065 | |
| 7066 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCDR (tail)) |
| 7067 | { |
| 7068 | int i; |
| 7069 | int end = menu_bar_items_index; |
| 7070 | |
| 7071 | for (i = 0; i < end; i += 4) |
| 7072 | if (EQ (XCAR (tail), XVECTOR (menu_bar_items_vector)->contents[i])) |
| 7073 | { |
| 7074 | Lisp_Object tem0, tem1, tem2, tem3; |
| 7075 | /* Move the item at index I to the end, |
| 7076 | shifting all the others forward. */ |
| 7077 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; |
| 7078 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; |
| 7079 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; |
| 7080 | tem3 = XVECTOR (menu_bar_items_vector)->contents[i + 3]; |
| 7081 | if (end > i + 4) |
| 7082 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], |
| 7083 | &XVECTOR (menu_bar_items_vector)->contents[i], |
| 7084 | (end - i - 4) * sizeof (Lisp_Object)); |
| 7085 | XVECTOR (menu_bar_items_vector)->contents[end - 4] = tem0; |
| 7086 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem1; |
| 7087 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem2; |
| 7088 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem3; |
| 7089 | break; |
| 7090 | } |
| 7091 | } |
| 7092 | |
| 7093 | /* Add nil, nil, nil, nil at the end. */ |
| 7094 | i = menu_bar_items_index; |
| 7095 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
| 7096 | { |
| 7097 | Lisp_Object tem; |
| 7098 | tem = Fmake_vector (make_number (2 * i), Qnil); |
| 7099 | bcopy (XVECTOR (menu_bar_items_vector)->contents, |
| 7100 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); |
| 7101 | menu_bar_items_vector = tem; |
| 7102 | } |
| 7103 | /* Add this item. */ |
| 7104 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
| 7105 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
| 7106 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
| 7107 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
| 7108 | menu_bar_items_index = i; |
| 7109 | |
| 7110 | Vinhibit_quit = oquit; |
| 7111 | return menu_bar_items_vector; |
| 7112 | } |
| 7113 | \f |
| 7114 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
| 7115 | If there's already an item for KEY, add this DEF to it. */ |
| 7116 | |
| 7117 | Lisp_Object item_properties; |
| 7118 | |
| 7119 | static void |
| 7120 | menu_bar_item (key, item, dummy1, dummy2) |
| 7121 | Lisp_Object key, item, dummy1; |
| 7122 | void *dummy2; |
| 7123 | { |
| 7124 | struct gcpro gcpro1; |
| 7125 | int i; |
| 7126 | Lisp_Object tem; |
| 7127 | |
| 7128 | if (EQ (item, Qundefined)) |
| 7129 | { |
| 7130 | /* If a map has an explicit `undefined' as definition, |
| 7131 | discard any previously made menu bar item. */ |
| 7132 | |
| 7133 | for (i = 0; i < menu_bar_items_index; i += 4) |
| 7134 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
| 7135 | { |
| 7136 | if (menu_bar_items_index > i + 4) |
| 7137 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], |
| 7138 | &XVECTOR (menu_bar_items_vector)->contents[i], |
| 7139 | (menu_bar_items_index - i - 4) * sizeof (Lisp_Object)); |
| 7140 | menu_bar_items_index -= 4; |
| 7141 | } |
| 7142 | } |
| 7143 | |
| 7144 | /* If this keymap has already contributed to this KEY, |
| 7145 | don't contribute to it a second time. */ |
| 7146 | tem = Fmemq (key, menu_bar_one_keymap_changed_items); |
| 7147 | if (!NILP (tem) || NILP (item)) |
| 7148 | return; |
| 7149 | |
| 7150 | menu_bar_one_keymap_changed_items |
| 7151 | = Fcons (key, menu_bar_one_keymap_changed_items); |
| 7152 | |
| 7153 | /* We add to menu_bar_one_keymap_changed_items before doing the |
| 7154 | parse_menu_item, so that if it turns out it wasn't a menu item, |
| 7155 | it still correctly hides any further menu item. */ |
| 7156 | GCPRO1 (key); |
| 7157 | i = parse_menu_item (item, 0, 1); |
| 7158 | UNGCPRO; |
| 7159 | if (!i) |
| 7160 | return; |
| 7161 | |
| 7162 | item = XVECTOR (item_properties)->contents[ITEM_PROPERTY_DEF]; |
| 7163 | |
| 7164 | /* Find any existing item for this KEY. */ |
| 7165 | for (i = 0; i < menu_bar_items_index; i += 4) |
| 7166 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
| 7167 | break; |
| 7168 | |
| 7169 | /* If we did not find this KEY, add it at the end. */ |
| 7170 | if (i == menu_bar_items_index) |
| 7171 | { |
| 7172 | /* If vector is too small, get a bigger one. */ |
| 7173 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
| 7174 | { |
| 7175 | Lisp_Object tem; |
| 7176 | tem = Fmake_vector (make_number (2 * i), Qnil); |
| 7177 | bcopy (XVECTOR (menu_bar_items_vector)->contents, |
| 7178 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); |
| 7179 | menu_bar_items_vector = tem; |
| 7180 | } |
| 7181 | |
| 7182 | /* Add this item. */ |
| 7183 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; |
| 7184 | XVECTOR (menu_bar_items_vector)->contents[i++] |
| 7185 | = XVECTOR (item_properties)->contents[ITEM_PROPERTY_NAME]; |
| 7186 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (item, Qnil); |
| 7187 | XVECTOR (menu_bar_items_vector)->contents[i++] = make_number (0); |
| 7188 | menu_bar_items_index = i; |
| 7189 | } |
| 7190 | /* We did find an item for this KEY. Add ITEM to its list of maps. */ |
| 7191 | else |
| 7192 | { |
| 7193 | Lisp_Object old; |
| 7194 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; |
| 7195 | /* If the new and the old items are not both keymaps, |
| 7196 | the lookup will only find `item'. */ |
| 7197 | item = Fcons (item, KEYMAPP (item) && KEYMAPP (XCAR (old)) ? old : Qnil); |
| 7198 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = item; |
| 7199 | } |
| 7200 | } |
| 7201 | \f |
| 7202 | /* This is used as the handler when calling menu_item_eval_property. */ |
| 7203 | static Lisp_Object |
| 7204 | menu_item_eval_property_1 (arg) |
| 7205 | Lisp_Object arg; |
| 7206 | { |
| 7207 | /* If we got a quit from within the menu computation, |
| 7208 | quit all the way out of it. This takes care of C-] in the debugger. */ |
| 7209 | if (CONSP (arg) && EQ (XCAR (arg), Qquit)) |
| 7210 | Fsignal (Qquit, Qnil); |
| 7211 | |
| 7212 | return Qnil; |
| 7213 | } |
| 7214 | |
| 7215 | /* Evaluate an expression and return the result (or nil if something |
| 7216 | went wrong). Used to evaluate dynamic parts of menu items. */ |
| 7217 | Lisp_Object |
| 7218 | menu_item_eval_property (sexpr) |
| 7219 | Lisp_Object sexpr; |
| 7220 | { |
| 7221 | int count = SPECPDL_INDEX (); |
| 7222 | Lisp_Object val; |
| 7223 | specbind (Qinhibit_redisplay, Qt); |
| 7224 | val = internal_condition_case_1 (Feval, sexpr, Qerror, |
| 7225 | menu_item_eval_property_1); |
| 7226 | return unbind_to (count, val); |
| 7227 | } |
| 7228 | |
| 7229 | /* This function parses a menu item and leaves the result in the |
| 7230 | vector item_properties. |
| 7231 | ITEM is a key binding, a possible menu item. |
| 7232 | If NOTREAL is nonzero, only check for equivalent key bindings, don't |
| 7233 | evaluate dynamic expressions in the menu item. |
| 7234 | INMENUBAR is > 0 when this is considered for an entry in a menu bar |
| 7235 | top level. |
| 7236 | INMENUBAR is < 0 when this is considered for an entry in a keyboard menu. |
| 7237 | parse_menu_item returns true if the item is a menu item and false |
| 7238 | otherwise. */ |
| 7239 | |
| 7240 | int |
| 7241 | parse_menu_item (item, notreal, inmenubar) |
| 7242 | Lisp_Object item; |
| 7243 | int notreal, inmenubar; |
| 7244 | { |
| 7245 | Lisp_Object def, tem, item_string, start; |
| 7246 | Lisp_Object cachelist; |
| 7247 | Lisp_Object filter; |
| 7248 | Lisp_Object keyhint; |
| 7249 | int i; |
| 7250 | int newcache = 0; |
| 7251 | |
| 7252 | cachelist = Qnil; |
| 7253 | filter = Qnil; |
| 7254 | keyhint = Qnil; |
| 7255 | |
| 7256 | if (!CONSP (item)) |
| 7257 | return 0; |
| 7258 | |
| 7259 | /* Create item_properties vector if necessary. */ |
| 7260 | if (NILP (item_properties)) |
| 7261 | item_properties |
| 7262 | = Fmake_vector (make_number (ITEM_PROPERTY_ENABLE + 1), Qnil); |
| 7263 | |
| 7264 | /* Initialize optional entries. */ |
| 7265 | for (i = ITEM_PROPERTY_DEF; i < ITEM_PROPERTY_ENABLE; i++) |
| 7266 | AREF (item_properties, i) = Qnil; |
| 7267 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = Qt; |
| 7268 | |
| 7269 | /* Save the item here to protect it from GC. */ |
| 7270 | AREF (item_properties, ITEM_PROPERTY_ITEM) = item; |
| 7271 | |
| 7272 | item_string = XCAR (item); |
| 7273 | |
| 7274 | start = item; |
| 7275 | item = XCDR (item); |
| 7276 | if (STRINGP (item_string)) |
| 7277 | { |
| 7278 | /* Old format menu item. */ |
| 7279 | AREF (item_properties, ITEM_PROPERTY_NAME) = item_string; |
| 7280 | |
| 7281 | /* Maybe help string. */ |
| 7282 | if (CONSP (item) && STRINGP (XCAR (item))) |
| 7283 | { |
| 7284 | AREF (item_properties, ITEM_PROPERTY_HELP) = XCAR (item); |
| 7285 | start = item; |
| 7286 | item = XCDR (item); |
| 7287 | } |
| 7288 | |
| 7289 | /* Maybe key binding cache. */ |
| 7290 | if (CONSP (item) && CONSP (XCAR (item)) |
| 7291 | && (NILP (XCAR (XCAR (item))) |
| 7292 | || VECTORP (XCAR (XCAR (item))))) |
| 7293 | { |
| 7294 | cachelist = XCAR (item); |
| 7295 | item = XCDR (item); |
| 7296 | } |
| 7297 | |
| 7298 | /* This is the real definition--the function to run. */ |
| 7299 | AREF (item_properties, ITEM_PROPERTY_DEF) = item; |
| 7300 | |
| 7301 | /* Get enable property, if any. */ |
| 7302 | if (SYMBOLP (item)) |
| 7303 | { |
| 7304 | tem = Fget (item, Qmenu_enable); |
| 7305 | if (!NILP (Venable_disabled_menus_and_buttons)) |
| 7306 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = Qt; |
| 7307 | else if (!NILP (tem)) |
| 7308 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = tem; |
| 7309 | } |
| 7310 | } |
| 7311 | else if (EQ (item_string, Qmenu_item) && CONSP (item)) |
| 7312 | { |
| 7313 | /* New format menu item. */ |
| 7314 | AREF (item_properties, ITEM_PROPERTY_NAME) = XCAR (item); |
| 7315 | start = XCDR (item); |
| 7316 | if (CONSP (start)) |
| 7317 | { |
| 7318 | /* We have a real binding. */ |
| 7319 | AREF (item_properties, ITEM_PROPERTY_DEF) = XCAR (start); |
| 7320 | |
| 7321 | item = XCDR (start); |
| 7322 | /* Is there a cache list with key equivalences. */ |
| 7323 | if (CONSP (item) && CONSP (XCAR (item))) |
| 7324 | { |
| 7325 | cachelist = XCAR (item); |
| 7326 | item = XCDR (item); |
| 7327 | } |
| 7328 | |
| 7329 | /* Parse properties. */ |
| 7330 | while (CONSP (item) && CONSP (XCDR (item))) |
| 7331 | { |
| 7332 | tem = XCAR (item); |
| 7333 | item = XCDR (item); |
| 7334 | |
| 7335 | if (EQ (tem, QCenable)) |
| 7336 | { |
| 7337 | if (!NILP (Venable_disabled_menus_and_buttons)) |
| 7338 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = Qt; |
| 7339 | else |
| 7340 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = XCAR (item); |
| 7341 | } |
| 7342 | else if (EQ (tem, QCvisible) && !notreal) |
| 7343 | { |
| 7344 | /* If got a visible property and that evaluates to nil |
| 7345 | then ignore this item. */ |
| 7346 | tem = menu_item_eval_property (XCAR (item)); |
| 7347 | if (NILP (tem)) |
| 7348 | return 0; |
| 7349 | } |
| 7350 | else if (EQ (tem, QChelp)) |
| 7351 | AREF (item_properties, ITEM_PROPERTY_HELP) = XCAR (item); |
| 7352 | else if (EQ (tem, QCfilter)) |
| 7353 | filter = item; |
| 7354 | else if (EQ (tem, QCkey_sequence)) |
| 7355 | { |
| 7356 | tem = XCAR (item); |
| 7357 | if (NILP (cachelist) |
| 7358 | && (SYMBOLP (tem) || STRINGP (tem) || VECTORP (tem))) |
| 7359 | /* Be GC protected. Set keyhint to item instead of tem. */ |
| 7360 | keyhint = item; |
| 7361 | } |
| 7362 | else if (EQ (tem, QCkeys)) |
| 7363 | { |
| 7364 | tem = XCAR (item); |
| 7365 | if (CONSP (tem) || (STRINGP (tem) && NILP (cachelist))) |
| 7366 | AREF (item_properties, ITEM_PROPERTY_KEYEQ) = tem; |
| 7367 | } |
| 7368 | else if (EQ (tem, QCbutton) && CONSP (XCAR (item))) |
| 7369 | { |
| 7370 | Lisp_Object type; |
| 7371 | tem = XCAR (item); |
| 7372 | type = XCAR (tem); |
| 7373 | if (EQ (type, QCtoggle) || EQ (type, QCradio)) |
| 7374 | { |
| 7375 | AREF (item_properties, ITEM_PROPERTY_SELECTED) |
| 7376 | = XCDR (tem); |
| 7377 | AREF (item_properties, ITEM_PROPERTY_TYPE) |
| 7378 | = type; |
| 7379 | } |
| 7380 | } |
| 7381 | item = XCDR (item); |
| 7382 | } |
| 7383 | } |
| 7384 | else if (inmenubar || !NILP (start)) |
| 7385 | return 0; |
| 7386 | } |
| 7387 | else |
| 7388 | return 0; /* not a menu item */ |
| 7389 | |
| 7390 | /* If item string is not a string, evaluate it to get string. |
| 7391 | If we don't get a string, skip this item. */ |
| 7392 | item_string = AREF (item_properties, ITEM_PROPERTY_NAME); |
| 7393 | if (!(STRINGP (item_string) || notreal)) |
| 7394 | { |
| 7395 | item_string = menu_item_eval_property (item_string); |
| 7396 | if (!STRINGP (item_string)) |
| 7397 | return 0; |
| 7398 | AREF (item_properties, ITEM_PROPERTY_NAME) = item_string; |
| 7399 | } |
| 7400 | |
| 7401 | /* If got a filter apply it on definition. */ |
| 7402 | def = AREF (item_properties, ITEM_PROPERTY_DEF); |
| 7403 | if (!NILP (filter)) |
| 7404 | { |
| 7405 | def = menu_item_eval_property (list2 (XCAR (filter), |
| 7406 | list2 (Qquote, def))); |
| 7407 | |
| 7408 | AREF (item_properties, ITEM_PROPERTY_DEF) = def; |
| 7409 | } |
| 7410 | |
| 7411 | /* Enable or disable selection of item. */ |
| 7412 | tem = AREF (item_properties, ITEM_PROPERTY_ENABLE); |
| 7413 | if (!EQ (tem, Qt)) |
| 7414 | { |
| 7415 | if (notreal) |
| 7416 | tem = Qt; |
| 7417 | else |
| 7418 | tem = menu_item_eval_property (tem); |
| 7419 | if (inmenubar && NILP (tem)) |
| 7420 | return 0; /* Ignore disabled items in menu bar. */ |
| 7421 | AREF (item_properties, ITEM_PROPERTY_ENABLE) = tem; |
| 7422 | } |
| 7423 | |
| 7424 | /* If we got no definition, this item is just unselectable text which |
| 7425 | is OK in a submenu but not in the menubar. */ |
| 7426 | if (NILP (def)) |
| 7427 | return (inmenubar ? 0 : 1); |
| 7428 | |
| 7429 | /* See if this is a separate pane or a submenu. */ |
| 7430 | def = AREF (item_properties, ITEM_PROPERTY_DEF); |
| 7431 | tem = get_keymap (def, 0, 1); |
| 7432 | /* For a subkeymap, just record its details and exit. */ |
| 7433 | if (CONSP (tem)) |
| 7434 | { |
| 7435 | AREF (item_properties, ITEM_PROPERTY_MAP) = tem; |
| 7436 | AREF (item_properties, ITEM_PROPERTY_DEF) = tem; |
| 7437 | return 1; |
| 7438 | } |
| 7439 | |
| 7440 | /* At the top level in the menu bar, do likewise for commands also. |
| 7441 | The menu bar does not display equivalent key bindings anyway. |
| 7442 | ITEM_PROPERTY_DEF is already set up properly. */ |
| 7443 | if (inmenubar > 0) |
| 7444 | return 1; |
| 7445 | |
| 7446 | /* This is a command. See if there is an equivalent key binding. */ |
| 7447 | if (NILP (cachelist)) |
| 7448 | { |
| 7449 | /* We have to create a cachelist. */ |
| 7450 | CHECK_IMPURE (start); |
| 7451 | XSETCDR (start, Fcons (Fcons (Qnil, Qnil), XCDR (start))); |
| 7452 | cachelist = XCAR (XCDR (start)); |
| 7453 | newcache = 1; |
| 7454 | tem = AREF (item_properties, ITEM_PROPERTY_KEYEQ); |
| 7455 | if (!NILP (keyhint)) |
| 7456 | { |
| 7457 | XSETCAR (cachelist, XCAR (keyhint)); |
| 7458 | newcache = 0; |
| 7459 | } |
| 7460 | else if (STRINGP (tem)) |
| 7461 | { |
| 7462 | XSETCDR (cachelist, Fsubstitute_command_keys (tem)); |
| 7463 | XSETCAR (cachelist, Qt); |
| 7464 | } |
| 7465 | } |
| 7466 | |
| 7467 | tem = XCAR (cachelist); |
| 7468 | if (!EQ (tem, Qt)) |
| 7469 | { |
| 7470 | int chkcache = 0; |
| 7471 | Lisp_Object prefix; |
| 7472 | |
| 7473 | if (!NILP (tem)) |
| 7474 | tem = Fkey_binding (tem, Qnil, Qnil); |
| 7475 | |
| 7476 | prefix = AREF (item_properties, ITEM_PROPERTY_KEYEQ); |
| 7477 | if (CONSP (prefix)) |
| 7478 | { |
| 7479 | def = XCAR (prefix); |
| 7480 | prefix = XCDR (prefix); |
| 7481 | } |
| 7482 | else |
| 7483 | def = AREF (item_properties, ITEM_PROPERTY_DEF); |
| 7484 | |
| 7485 | if (NILP (XCAR (cachelist))) /* Have no saved key. */ |
| 7486 | { |
| 7487 | if (newcache /* Always check first time. */ |
| 7488 | /* Should we check everything when precomputing key |
| 7489 | bindings? */ |
| 7490 | /* If something had no key binding before, don't recheck it |
| 7491 | because that is too slow--except if we have a list of |
| 7492 | rebound commands in Vdefine_key_rebound_commands, do |
| 7493 | recheck any command that appears in that list. */ |
| 7494 | || (CONSP (Vdefine_key_rebound_commands) |
| 7495 | && !NILP (Fmemq (def, Vdefine_key_rebound_commands)))) |
| 7496 | chkcache = 1; |
| 7497 | } |
| 7498 | /* We had a saved key. Is it still bound to the command? */ |
| 7499 | else if (NILP (tem) |
| 7500 | || (!EQ (tem, def) |
| 7501 | /* If the command is an alias for another |
| 7502 | (such as lmenu.el set it up), check if the |
| 7503 | original command matches the cached command. */ |
| 7504 | && !(SYMBOLP (def) && EQ (tem, XSYMBOL (def)->function)))) |
| 7505 | chkcache = 1; /* Need to recompute key binding. */ |
| 7506 | |
| 7507 | if (chkcache) |
| 7508 | { |
| 7509 | /* Recompute equivalent key binding. If the command is an alias |
| 7510 | for another (such as lmenu.el set it up), see if the original |
| 7511 | command name has equivalent keys. Otherwise look up the |
| 7512 | specified command itself. We don't try both, because that |
| 7513 | makes lmenu menus slow. */ |
| 7514 | if (SYMBOLP (def) |
| 7515 | && SYMBOLP (XSYMBOL (def)->function) |
| 7516 | && ! NILP (Fget (def, Qmenu_alias))) |
| 7517 | def = XSYMBOL (def)->function; |
| 7518 | tem = Fwhere_is_internal (def, Qnil, Qt, Qnil, Qt); |
| 7519 | XSETCAR (cachelist, tem); |
| 7520 | if (NILP (tem)) |
| 7521 | { |
| 7522 | XSETCDR (cachelist, Qnil); |
| 7523 | chkcache = 0; |
| 7524 | } |
| 7525 | } |
| 7526 | else if (!NILP (keyhint) && !NILP (XCAR (cachelist))) |
| 7527 | { |
| 7528 | tem = XCAR (cachelist); |
| 7529 | chkcache = 1; |
| 7530 | } |
| 7531 | |
| 7532 | newcache = chkcache; |
| 7533 | if (chkcache) |
| 7534 | { |
| 7535 | tem = Fkey_description (tem, Qnil); |
| 7536 | if (CONSP (prefix)) |
| 7537 | { |
| 7538 | if (STRINGP (XCAR (prefix))) |
| 7539 | tem = concat2 (XCAR (prefix), tem); |
| 7540 | if (STRINGP (XCDR (prefix))) |
| 7541 | tem = concat2 (tem, XCDR (prefix)); |
| 7542 | } |
| 7543 | XSETCDR (cachelist, tem); |
| 7544 | } |
| 7545 | } |
| 7546 | |
| 7547 | tem = XCDR (cachelist); |
| 7548 | if (newcache && !NILP (tem)) |
| 7549 | { |
| 7550 | tem = concat3 (build_string (" ("), tem, build_string (")")); |
| 7551 | XSETCDR (cachelist, tem); |
| 7552 | } |
| 7553 | |
| 7554 | /* If we only want to precompute equivalent key bindings, stop here. */ |
| 7555 | if (notreal) |
| 7556 | return 1; |
| 7557 | |
| 7558 | /* If we have an equivalent key binding, use that. */ |
| 7559 | AREF (item_properties, ITEM_PROPERTY_KEYEQ) = tem; |
| 7560 | |
| 7561 | /* Include this when menu help is implemented. |
| 7562 | tem = XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP]; |
| 7563 | if (!(NILP (tem) || STRINGP (tem))) |
| 7564 | { |
| 7565 | tem = menu_item_eval_property (tem); |
| 7566 | if (!STRINGP (tem)) |
| 7567 | tem = Qnil; |
| 7568 | XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP] = tem; |
| 7569 | } |
| 7570 | */ |
| 7571 | |
| 7572 | /* Handle radio buttons or toggle boxes. */ |
| 7573 | tem = AREF (item_properties, ITEM_PROPERTY_SELECTED); |
| 7574 | if (!NILP (tem)) |
| 7575 | AREF (item_properties, ITEM_PROPERTY_SELECTED) |
| 7576 | = menu_item_eval_property (tem); |
| 7577 | |
| 7578 | return 1; |
| 7579 | } |
| 7580 | |
| 7581 | |
| 7582 | \f |
| 7583 | /*********************************************************************** |
| 7584 | Tool-bars |
| 7585 | ***********************************************************************/ |
| 7586 | |
| 7587 | /* A vector holding tool bar items while they are parsed in function |
| 7588 | tool_bar_items. Each item occupies TOOL_BAR_ITEM_NSCLOTS elements |
| 7589 | in the vector. */ |
| 7590 | |
| 7591 | static Lisp_Object tool_bar_items_vector; |
| 7592 | |
| 7593 | /* A vector holding the result of parse_tool_bar_item. Layout is like |
| 7594 | the one for a single item in tool_bar_items_vector. */ |
| 7595 | |
| 7596 | static Lisp_Object tool_bar_item_properties; |
| 7597 | |
| 7598 | /* Next free index in tool_bar_items_vector. */ |
| 7599 | |
| 7600 | static int ntool_bar_items; |
| 7601 | |
| 7602 | /* The symbols `tool-bar', and `:image'. */ |
| 7603 | |
| 7604 | extern Lisp_Object Qtool_bar; |
| 7605 | Lisp_Object QCimage; |
| 7606 | |
| 7607 | /* Function prototypes. */ |
| 7608 | |
| 7609 | static void init_tool_bar_items P_ ((Lisp_Object)); |
| 7610 | static void process_tool_bar_item P_ ((Lisp_Object, Lisp_Object, Lisp_Object, void*)); |
| 7611 | static int parse_tool_bar_item P_ ((Lisp_Object, Lisp_Object)); |
| 7612 | static void append_tool_bar_item P_ ((void)); |
| 7613 | |
| 7614 | |
| 7615 | /* Return a vector of tool bar items for keymaps currently in effect. |
| 7616 | Reuse vector REUSE if non-nil. Return in *NITEMS the number of |
| 7617 | tool bar items found. */ |
| 7618 | |
| 7619 | Lisp_Object |
| 7620 | tool_bar_items (reuse, nitems) |
| 7621 | Lisp_Object reuse; |
| 7622 | int *nitems; |
| 7623 | { |
| 7624 | Lisp_Object *maps; |
| 7625 | int nmaps, i; |
| 7626 | Lisp_Object oquit; |
| 7627 | Lisp_Object *tmaps; |
| 7628 | |
| 7629 | *nitems = 0; |
| 7630 | |
| 7631 | /* In order to build the menus, we need to call the keymap |
| 7632 | accessors. They all call QUIT. But this function is called |
| 7633 | during redisplay, during which a quit is fatal. So inhibit |
| 7634 | quitting while building the menus. We do this instead of |
| 7635 | specbind because (1) errors will clear it anyway and (2) this |
| 7636 | avoids risk of specpdl overflow. */ |
| 7637 | oquit = Vinhibit_quit; |
| 7638 | Vinhibit_quit = Qt; |
| 7639 | |
| 7640 | /* Initialize tool_bar_items_vector and protect it from GC. */ |
| 7641 | init_tool_bar_items (reuse); |
| 7642 | |
| 7643 | /* Build list of keymaps in maps. Set nmaps to the number of maps |
| 7644 | to process. */ |
| 7645 | |
| 7646 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
| 7647 | if (!NILP (Voverriding_local_map_menu_flag)) |
| 7648 | { |
| 7649 | /* Yes, use them (if non-nil) as well as the global map. */ |
| 7650 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); |
| 7651 | nmaps = 0; |
| 7652 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) |
| 7653 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; |
| 7654 | if (!NILP (Voverriding_local_map)) |
| 7655 | maps[nmaps++] = Voverriding_local_map; |
| 7656 | } |
| 7657 | else |
| 7658 | { |
| 7659 | /* No, so use major and minor mode keymaps and keymap property. |
| 7660 | Note that tool-bar bindings in the local-map and keymap |
| 7661 | properties may not work reliable, as they are only |
| 7662 | recognized when the tool-bar (or mode-line) is updated, |
| 7663 | which does not normally happen after every command. */ |
| 7664 | Lisp_Object tem; |
| 7665 | int nminor; |
| 7666 | nminor = current_minor_maps (NULL, &tmaps); |
| 7667 | maps = (Lisp_Object *) alloca ((nminor + 3) * sizeof (maps[0])); |
| 7668 | nmaps = 0; |
| 7669 | if (tem = get_local_map (PT, current_buffer, Qkeymap), !NILP (tem)) |
| 7670 | maps[nmaps++] = tem; |
| 7671 | bcopy (tmaps, (void *) (maps + nmaps), nminor * sizeof (maps[0])); |
| 7672 | nmaps += nminor; |
| 7673 | maps[nmaps++] = get_local_map (PT, current_buffer, Qlocal_map); |
| 7674 | } |
| 7675 | |
| 7676 | /* Add global keymap at the end. */ |
| 7677 | maps[nmaps++] = current_global_map; |
| 7678 | |
| 7679 | /* Process maps in reverse order and look up in each map the prefix |
| 7680 | key `tool-bar'. */ |
| 7681 | for (i = nmaps - 1; i >= 0; --i) |
| 7682 | if (!NILP (maps[i])) |
| 7683 | { |
| 7684 | Lisp_Object keymap; |
| 7685 | |
| 7686 | keymap = get_keymap (access_keymap (maps[i], Qtool_bar, 1, 0, 1), 0, 1); |
| 7687 | if (CONSP (keymap)) |
| 7688 | map_keymap (keymap, process_tool_bar_item, Qnil, NULL, 1); |
| 7689 | } |
| 7690 | |
| 7691 | Vinhibit_quit = oquit; |
| 7692 | *nitems = ntool_bar_items / TOOL_BAR_ITEM_NSLOTS; |
| 7693 | return tool_bar_items_vector; |
| 7694 | } |
| 7695 | |
| 7696 | |
| 7697 | /* Process the definition of KEY which is DEF. */ |
| 7698 | |
| 7699 | static void |
| 7700 | process_tool_bar_item (key, def, data, args) |
| 7701 | Lisp_Object key, def, data; |
| 7702 | void *args; |
| 7703 | { |
| 7704 | int i; |
| 7705 | extern Lisp_Object Qundefined; |
| 7706 | struct gcpro gcpro1, gcpro2; |
| 7707 | |
| 7708 | /* Protect KEY and DEF from GC because parse_tool_bar_item may call |
| 7709 | eval. */ |
| 7710 | GCPRO2 (key, def); |
| 7711 | |
| 7712 | if (EQ (def, Qundefined)) |
| 7713 | { |
| 7714 | /* If a map has an explicit `undefined' as definition, |
| 7715 | discard any previously made item. */ |
| 7716 | for (i = 0; i < ntool_bar_items; i += TOOL_BAR_ITEM_NSLOTS) |
| 7717 | { |
| 7718 | Lisp_Object *v = XVECTOR (tool_bar_items_vector)->contents + i; |
| 7719 | |
| 7720 | if (EQ (key, v[TOOL_BAR_ITEM_KEY])) |
| 7721 | { |
| 7722 | if (ntool_bar_items > i + TOOL_BAR_ITEM_NSLOTS) |
| 7723 | bcopy (v + TOOL_BAR_ITEM_NSLOTS, v, |
| 7724 | ((ntool_bar_items - i - TOOL_BAR_ITEM_NSLOTS) |
| 7725 | * sizeof (Lisp_Object))); |
| 7726 | ntool_bar_items -= TOOL_BAR_ITEM_NSLOTS; |
| 7727 | break; |
| 7728 | } |
| 7729 | } |
| 7730 | } |
| 7731 | else if (parse_tool_bar_item (key, def)) |
| 7732 | /* Append a new tool bar item to tool_bar_items_vector. Accept |
| 7733 | more than one definition for the same key. */ |
| 7734 | append_tool_bar_item (); |
| 7735 | |
| 7736 | UNGCPRO; |
| 7737 | } |
| 7738 | |
| 7739 | |
| 7740 | /* Parse a tool bar item specification ITEM for key KEY and return the |
| 7741 | result in tool_bar_item_properties. Value is zero if ITEM is |
| 7742 | invalid. |
| 7743 | |
| 7744 | ITEM is a list `(menu-item CAPTION BINDING PROPS...)'. |
| 7745 | |
| 7746 | CAPTION is the caption of the item, If it's not a string, it is |
| 7747 | evaluated to get a string. |
| 7748 | |
| 7749 | BINDING is the tool bar item's binding. Tool-bar items with keymaps |
| 7750 | as binding are currently ignored. |
| 7751 | |
| 7752 | The following properties are recognized: |
| 7753 | |
| 7754 | - `:enable FORM'. |
| 7755 | |
| 7756 | FORM is evaluated and specifies whether the tool bar item is |
| 7757 | enabled or disabled. |
| 7758 | |
| 7759 | - `:visible FORM' |
| 7760 | |
| 7761 | FORM is evaluated and specifies whether the tool bar item is visible. |
| 7762 | |
| 7763 | - `:filter FUNCTION' |
| 7764 | |
| 7765 | FUNCTION is invoked with one parameter `(quote BINDING)'. Its |
| 7766 | result is stored as the new binding. |
| 7767 | |
| 7768 | - `:button (TYPE SELECTED)' |
| 7769 | |
| 7770 | TYPE must be one of `:radio' or `:toggle'. SELECTED is evaluated |
| 7771 | and specifies whether the button is selected (pressed) or not. |
| 7772 | |
| 7773 | - `:image IMAGES' |
| 7774 | |
| 7775 | IMAGES is either a single image specification or a vector of four |
| 7776 | image specifications. See enum tool_bar_item_images. |
| 7777 | |
| 7778 | - `:help HELP-STRING'. |
| 7779 | |
| 7780 | Gives a help string to display for the tool bar item. */ |
| 7781 | |
| 7782 | static int |
| 7783 | parse_tool_bar_item (key, item) |
| 7784 | Lisp_Object key, item; |
| 7785 | { |
| 7786 | /* Access slot with index IDX of vector tool_bar_item_properties. */ |
| 7787 | #define PROP(IDX) XVECTOR (tool_bar_item_properties)->contents[IDX] |
| 7788 | |
| 7789 | Lisp_Object filter = Qnil; |
| 7790 | Lisp_Object caption; |
| 7791 | int i; |
| 7792 | |
| 7793 | /* Defininition looks like `(menu-item CAPTION BINDING PROPS...)'. |
| 7794 | Rule out items that aren't lists, don't start with |
| 7795 | `menu-item' or whose rest following `tool-bar-item' is not a |
| 7796 | list. */ |
| 7797 | if (!CONSP (item) |
| 7798 | || !EQ (XCAR (item), Qmenu_item) |
| 7799 | || (item = XCDR (item), |
| 7800 | !CONSP (item))) |
| 7801 | return 0; |
| 7802 | |
| 7803 | /* Create tool_bar_item_properties vector if necessary. Reset it to |
| 7804 | defaults. */ |
| 7805 | if (VECTORP (tool_bar_item_properties)) |
| 7806 | { |
| 7807 | for (i = 0; i < TOOL_BAR_ITEM_NSLOTS; ++i) |
| 7808 | PROP (i) = Qnil; |
| 7809 | } |
| 7810 | else |
| 7811 | tool_bar_item_properties |
| 7812 | = Fmake_vector (make_number (TOOL_BAR_ITEM_NSLOTS), Qnil); |
| 7813 | |
| 7814 | /* Set defaults. */ |
| 7815 | PROP (TOOL_BAR_ITEM_KEY) = key; |
| 7816 | PROP (TOOL_BAR_ITEM_ENABLED_P) = Qt; |
| 7817 | |
| 7818 | /* Get the caption of the item. If the caption is not a string, |
| 7819 | evaluate it to get a string. If we don't get a string, skip this |
| 7820 | item. */ |
| 7821 | caption = XCAR (item); |
| 7822 | if (!STRINGP (caption)) |
| 7823 | { |
| 7824 | caption = menu_item_eval_property (caption); |
| 7825 | if (!STRINGP (caption)) |
| 7826 | return 0; |
| 7827 | } |
| 7828 | PROP (TOOL_BAR_ITEM_CAPTION) = caption; |
| 7829 | |
| 7830 | /* Give up if rest following the caption is not a list. */ |
| 7831 | item = XCDR (item); |
| 7832 | if (!CONSP (item)) |
| 7833 | return 0; |
| 7834 | |
| 7835 | /* Store the binding. */ |
| 7836 | PROP (TOOL_BAR_ITEM_BINDING) = XCAR (item); |
| 7837 | item = XCDR (item); |
| 7838 | |
| 7839 | /* Ignore cached key binding, if any. */ |
| 7840 | if (CONSP (item) && CONSP (XCAR (item))) |
| 7841 | item = XCDR (item); |
| 7842 | |
| 7843 | /* Process the rest of the properties. */ |
| 7844 | for (; CONSP (item) && CONSP (XCDR (item)); item = XCDR (XCDR (item))) |
| 7845 | { |
| 7846 | Lisp_Object key, value; |
| 7847 | |
| 7848 | key = XCAR (item); |
| 7849 | value = XCAR (XCDR (item)); |
| 7850 | |
| 7851 | if (EQ (key, QCenable)) |
| 7852 | { |
| 7853 | /* `:enable FORM'. */ |
| 7854 | if (!NILP (Venable_disabled_menus_and_buttons)) |
| 7855 | PROP (TOOL_BAR_ITEM_ENABLED_P) = Qt; |
| 7856 | else |
| 7857 | PROP (TOOL_BAR_ITEM_ENABLED_P) = value; |
| 7858 | } |
| 7859 | else if (EQ (key, QCvisible)) |
| 7860 | { |
| 7861 | /* `:visible FORM'. If got a visible property and that |
| 7862 | evaluates to nil then ignore this item. */ |
| 7863 | if (NILP (menu_item_eval_property (value))) |
| 7864 | return 0; |
| 7865 | } |
| 7866 | else if (EQ (key, QChelp)) |
| 7867 | /* `:help HELP-STRING'. */ |
| 7868 | PROP (TOOL_BAR_ITEM_HELP) = value; |
| 7869 | else if (EQ (key, QCfilter)) |
| 7870 | /* ':filter FORM'. */ |
| 7871 | filter = value; |
| 7872 | else if (EQ (key, QCbutton) && CONSP (value)) |
| 7873 | { |
| 7874 | /* `:button (TYPE . SELECTED)'. */ |
| 7875 | Lisp_Object type, selected; |
| 7876 | |
| 7877 | type = XCAR (value); |
| 7878 | selected = XCDR (value); |
| 7879 | if (EQ (type, QCtoggle) || EQ (type, QCradio)) |
| 7880 | { |
| 7881 | PROP (TOOL_BAR_ITEM_SELECTED_P) = selected; |
| 7882 | PROP (TOOL_BAR_ITEM_TYPE) = type; |
| 7883 | } |
| 7884 | } |
| 7885 | else if (EQ (key, QCimage) |
| 7886 | && (CONSP (value) |
| 7887 | || (VECTORP (value) && XVECTOR (value)->size == 4))) |
| 7888 | /* Value is either a single image specification or a vector |
| 7889 | of 4 such specifications for the different button states. */ |
| 7890 | PROP (TOOL_BAR_ITEM_IMAGES) = value; |
| 7891 | } |
| 7892 | |
| 7893 | /* If got a filter apply it on binding. */ |
| 7894 | if (!NILP (filter)) |
| 7895 | PROP (TOOL_BAR_ITEM_BINDING) |
| 7896 | = menu_item_eval_property (list2 (filter, |
| 7897 | list2 (Qquote, |
| 7898 | PROP (TOOL_BAR_ITEM_BINDING)))); |
| 7899 | |
| 7900 | /* See if the binding is a keymap. Give up if it is. */ |
| 7901 | if (CONSP (get_keymap (PROP (TOOL_BAR_ITEM_BINDING), 0, 1))) |
| 7902 | return 0; |
| 7903 | |
| 7904 | /* Enable or disable selection of item. */ |
| 7905 | if (!EQ (PROP (TOOL_BAR_ITEM_ENABLED_P), Qt)) |
| 7906 | PROP (TOOL_BAR_ITEM_ENABLED_P) |
| 7907 | = menu_item_eval_property (PROP (TOOL_BAR_ITEM_ENABLED_P)); |
| 7908 | |
| 7909 | /* Handle radio buttons or toggle boxes. */ |
| 7910 | if (!NILP (PROP (TOOL_BAR_ITEM_SELECTED_P))) |
| 7911 | PROP (TOOL_BAR_ITEM_SELECTED_P) |
| 7912 | = menu_item_eval_property (PROP (TOOL_BAR_ITEM_SELECTED_P)); |
| 7913 | |
| 7914 | return 1; |
| 7915 | |
| 7916 | #undef PROP |
| 7917 | } |
| 7918 | |
| 7919 | |
| 7920 | /* Initialize tool_bar_items_vector. REUSE, if non-nil, is a vector |
| 7921 | that can be reused. */ |
| 7922 | |
| 7923 | static void |
| 7924 | init_tool_bar_items (reuse) |
| 7925 | Lisp_Object reuse; |
| 7926 | { |
| 7927 | if (VECTORP (reuse)) |
| 7928 | tool_bar_items_vector = reuse; |
| 7929 | else |
| 7930 | tool_bar_items_vector = Fmake_vector (make_number (64), Qnil); |
| 7931 | ntool_bar_items = 0; |
| 7932 | } |
| 7933 | |
| 7934 | |
| 7935 | /* Append parsed tool bar item properties from |
| 7936 | tool_bar_item_properties */ |
| 7937 | |
| 7938 | static void |
| 7939 | append_tool_bar_item () |
| 7940 | { |
| 7941 | Lisp_Object *to, *from; |
| 7942 | |
| 7943 | /* Enlarge tool_bar_items_vector if necessary. */ |
| 7944 | if (ntool_bar_items + TOOL_BAR_ITEM_NSLOTS |
| 7945 | >= XVECTOR (tool_bar_items_vector)->size) |
| 7946 | { |
| 7947 | Lisp_Object new_vector; |
| 7948 | int old_size = XVECTOR (tool_bar_items_vector)->size; |
| 7949 | |
| 7950 | new_vector = Fmake_vector (make_number (2 * old_size), Qnil); |
| 7951 | bcopy (XVECTOR (tool_bar_items_vector)->contents, |
| 7952 | XVECTOR (new_vector)->contents, |
| 7953 | old_size * sizeof (Lisp_Object)); |
| 7954 | tool_bar_items_vector = new_vector; |
| 7955 | } |
| 7956 | |
| 7957 | /* Append entries from tool_bar_item_properties to the end of |
| 7958 | tool_bar_items_vector. */ |
| 7959 | to = XVECTOR (tool_bar_items_vector)->contents + ntool_bar_items; |
| 7960 | from = XVECTOR (tool_bar_item_properties)->contents; |
| 7961 | bcopy (from, to, TOOL_BAR_ITEM_NSLOTS * sizeof *to); |
| 7962 | ntool_bar_items += TOOL_BAR_ITEM_NSLOTS; |
| 7963 | } |
| 7964 | |
| 7965 | |
| 7966 | |
| 7967 | |
| 7968 | \f |
| 7969 | /* Read a character using menus based on maps in the array MAPS. |
| 7970 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. |
| 7971 | Return t if we displayed a menu but the user rejected it. |
| 7972 | |
| 7973 | PREV_EVENT is the previous input event, or nil if we are reading |
| 7974 | the first event of a key sequence. |
| 7975 | |
| 7976 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
| 7977 | if we used a mouse menu to read the input, or zero otherwise. If |
| 7978 | USED_MOUSE_MENU is null, we don't dereference it. |
| 7979 | |
| 7980 | The prompting is done based on the prompt-string of the map |
| 7981 | and the strings associated with various map elements. |
| 7982 | |
| 7983 | This can be done with X menus or with menus put in the minibuf. |
| 7984 | These are done in different ways, depending on how the input will be read. |
| 7985 | Menus using X are done after auto-saving in read-char, getting the input |
| 7986 | event from Fx_popup_menu; menus using the minibuf use read_char recursively |
| 7987 | and do auto-saving in the inner call of read_char. */ |
| 7988 | |
| 7989 | static Lisp_Object |
| 7990 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
| 7991 | int nmaps; |
| 7992 | Lisp_Object *maps; |
| 7993 | Lisp_Object prev_event; |
| 7994 | int *used_mouse_menu; |
| 7995 | { |
| 7996 | int mapno; |
| 7997 | register Lisp_Object name = Qnil; |
| 7998 | |
| 7999 | if (used_mouse_menu) |
| 8000 | *used_mouse_menu = 0; |
| 8001 | |
| 8002 | /* Use local over global Menu maps */ |
| 8003 | |
| 8004 | if (! menu_prompting) |
| 8005 | return Qnil; |
| 8006 | |
| 8007 | /* Optionally disregard all but the global map. */ |
| 8008 | if (inhibit_local_menu_bar_menus) |
| 8009 | { |
| 8010 | maps += (nmaps - 1); |
| 8011 | nmaps = 1; |
| 8012 | } |
| 8013 | |
| 8014 | /* Get the menu name from the first map that has one (a prompt string). */ |
| 8015 | for (mapno = 0; mapno < nmaps; mapno++) |
| 8016 | { |
| 8017 | name = Fkeymap_prompt (maps[mapno]); |
| 8018 | if (!NILP (name)) |
| 8019 | break; |
| 8020 | } |
| 8021 | |
| 8022 | /* If we don't have any menus, just read a character normally. */ |
| 8023 | if (!STRINGP (name)) |
| 8024 | return Qnil; |
| 8025 | |
| 8026 | #ifdef HAVE_MENUS |
| 8027 | /* If we got to this point via a mouse click, |
| 8028 | use a real menu for mouse selection. */ |
| 8029 | if (EVENT_HAS_PARAMETERS (prev_event) |
| 8030 | && !EQ (XCAR (prev_event), Qmenu_bar) |
| 8031 | && !EQ (XCAR (prev_event), Qtool_bar)) |
| 8032 | { |
| 8033 | /* Display the menu and get the selection. */ |
| 8034 | Lisp_Object *realmaps |
| 8035 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); |
| 8036 | Lisp_Object value; |
| 8037 | int nmaps1 = 0; |
| 8038 | |
| 8039 | /* Use the maps that are not nil. */ |
| 8040 | for (mapno = 0; mapno < nmaps; mapno++) |
| 8041 | if (!NILP (maps[mapno])) |
| 8042 | realmaps[nmaps1++] = maps[mapno]; |
| 8043 | |
| 8044 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); |
| 8045 | if (CONSP (value)) |
| 8046 | { |
| 8047 | Lisp_Object tem; |
| 8048 | |
| 8049 | record_menu_key (XCAR (value)); |
| 8050 | |
| 8051 | /* If we got multiple events, unread all but |
| 8052 | the first. |
| 8053 | There is no way to prevent those unread events |
| 8054 | from showing up later in last_nonmenu_event. |
| 8055 | So turn symbol and integer events into lists, |
| 8056 | to indicate that they came from a mouse menu, |
| 8057 | so that when present in last_nonmenu_event |
| 8058 | they won't confuse things. */ |
| 8059 | for (tem = XCDR (value); !NILP (tem); tem = XCDR (tem)) |
| 8060 | { |
| 8061 | record_menu_key (XCAR (tem)); |
| 8062 | if (SYMBOLP (XCAR (tem)) |
| 8063 | || INTEGERP (XCAR (tem))) |
| 8064 | XSETCAR (tem, Fcons (XCAR (tem), Qdisabled)); |
| 8065 | } |
| 8066 | |
| 8067 | /* If we got more than one event, put all but the first |
| 8068 | onto this list to be read later. |
| 8069 | Return just the first event now. */ |
| 8070 | Vunread_command_events |
| 8071 | = nconc2 (XCDR (value), Vunread_command_events); |
| 8072 | value = XCAR (value); |
| 8073 | } |
| 8074 | else if (NILP (value)) |
| 8075 | value = Qt; |
| 8076 | if (used_mouse_menu) |
| 8077 | *used_mouse_menu = 1; |
| 8078 | return value; |
| 8079 | } |
| 8080 | #endif /* HAVE_MENUS */ |
| 8081 | return Qnil ; |
| 8082 | } |
| 8083 | |
| 8084 | /* Buffer in use so far for the minibuf prompts for menu keymaps. |
| 8085 | We make this bigger when necessary, and never free it. */ |
| 8086 | static char *read_char_minibuf_menu_text; |
| 8087 | /* Size of that buffer. */ |
| 8088 | static int read_char_minibuf_menu_width; |
| 8089 | |
| 8090 | static Lisp_Object |
| 8091 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
| 8092 | int commandflag ; |
| 8093 | int nmaps; |
| 8094 | Lisp_Object *maps; |
| 8095 | { |
| 8096 | int mapno; |
| 8097 | register Lisp_Object name; |
| 8098 | int nlength; |
| 8099 | /* FIXME: Use the minibuffer's frame width. */ |
| 8100 | int width = FRAME_COLS (SELECTED_FRAME ()) - 4; |
| 8101 | int idx = -1; |
| 8102 | int nobindings = 1; |
| 8103 | Lisp_Object rest, vector; |
| 8104 | char *menu; |
| 8105 | |
| 8106 | vector = Qnil; |
| 8107 | name = Qnil; |
| 8108 | |
| 8109 | if (! menu_prompting) |
| 8110 | return Qnil; |
| 8111 | |
| 8112 | /* Make sure we have a big enough buffer for the menu text. */ |
| 8113 | if (read_char_minibuf_menu_text == 0) |
| 8114 | { |
| 8115 | read_char_minibuf_menu_width = width + 4; |
| 8116 | read_char_minibuf_menu_text = (char *) xmalloc (width + 4); |
| 8117 | } |
| 8118 | else if (width + 4 > read_char_minibuf_menu_width) |
| 8119 | { |
| 8120 | read_char_minibuf_menu_width = width + 4; |
| 8121 | read_char_minibuf_menu_text |
| 8122 | = (char *) xrealloc (read_char_minibuf_menu_text, width + 4); |
| 8123 | } |
| 8124 | menu = read_char_minibuf_menu_text; |
| 8125 | |
| 8126 | /* Get the menu name from the first map that has one (a prompt string). */ |
| 8127 | for (mapno = 0; mapno < nmaps; mapno++) |
| 8128 | { |
| 8129 | name = Fkeymap_prompt (maps[mapno]); |
| 8130 | if (!NILP (name)) |
| 8131 | break; |
| 8132 | } |
| 8133 | |
| 8134 | /* If we don't have any menus, just read a character normally. */ |
| 8135 | if (!STRINGP (name)) |
| 8136 | return Qnil; |
| 8137 | |
| 8138 | /* Prompt string always starts with map's prompt, and a space. */ |
| 8139 | strcpy (menu, SDATA (name)); |
| 8140 | nlength = SBYTES (name); |
| 8141 | menu[nlength++] = ':'; |
| 8142 | menu[nlength++] = ' '; |
| 8143 | menu[nlength] = 0; |
| 8144 | |
| 8145 | /* Start prompting at start of first map. */ |
| 8146 | mapno = 0; |
| 8147 | rest = maps[mapno]; |
| 8148 | |
| 8149 | /* Present the documented bindings, a line at a time. */ |
| 8150 | while (1) |
| 8151 | { |
| 8152 | int notfirst = 0; |
| 8153 | int i = nlength; |
| 8154 | Lisp_Object obj; |
| 8155 | int ch; |
| 8156 | Lisp_Object orig_defn_macro; |
| 8157 | |
| 8158 | /* Loop over elements of map. */ |
| 8159 | while (i < width) |
| 8160 | { |
| 8161 | Lisp_Object elt; |
| 8162 | |
| 8163 | /* If reached end of map, start at beginning of next map. */ |
| 8164 | if (NILP (rest)) |
| 8165 | { |
| 8166 | mapno++; |
| 8167 | /* At end of last map, wrap around to first map if just starting, |
| 8168 | or end this line if already have something on it. */ |
| 8169 | if (mapno == nmaps) |
| 8170 | { |
| 8171 | mapno = 0; |
| 8172 | if (notfirst || nobindings) break; |
| 8173 | } |
| 8174 | rest = maps[mapno]; |
| 8175 | } |
| 8176 | |
| 8177 | /* Look at the next element of the map. */ |
| 8178 | if (idx >= 0) |
| 8179 | elt = XVECTOR (vector)->contents[idx]; |
| 8180 | else |
| 8181 | elt = Fcar_safe (rest); |
| 8182 | |
| 8183 | if (idx < 0 && VECTORP (elt)) |
| 8184 | { |
| 8185 | /* If we found a dense table in the keymap, |
| 8186 | advanced past it, but start scanning its contents. */ |
| 8187 | rest = Fcdr_safe (rest); |
| 8188 | vector = elt; |
| 8189 | idx = 0; |
| 8190 | } |
| 8191 | else |
| 8192 | { |
| 8193 | /* An ordinary element. */ |
| 8194 | Lisp_Object event, tem; |
| 8195 | |
| 8196 | if (idx < 0) |
| 8197 | { |
| 8198 | event = Fcar_safe (elt); /* alist */ |
| 8199 | elt = Fcdr_safe (elt); |
| 8200 | } |
| 8201 | else |
| 8202 | { |
| 8203 | XSETINT (event, idx); /* vector */ |
| 8204 | } |
| 8205 | |
| 8206 | /* Ignore the element if it has no prompt string. */ |
| 8207 | if (INTEGERP (event) && parse_menu_item (elt, 0, -1)) |
| 8208 | { |
| 8209 | /* 1 if the char to type matches the string. */ |
| 8210 | int char_matches; |
| 8211 | Lisp_Object upcased_event, downcased_event; |
| 8212 | Lisp_Object desc = Qnil; |
| 8213 | Lisp_Object s |
| 8214 | = XVECTOR (item_properties)->contents[ITEM_PROPERTY_NAME]; |
| 8215 | |
| 8216 | upcased_event = Fupcase (event); |
| 8217 | downcased_event = Fdowncase (event); |
| 8218 | char_matches = (XINT (upcased_event) == SREF (s, 0) |
| 8219 | || XINT (downcased_event) == SREF (s, 0)); |
| 8220 | if (! char_matches) |
| 8221 | desc = Fsingle_key_description (event, Qnil); |
| 8222 | |
| 8223 | #if 0 /* It is redundant to list the equivalent key bindings because |
| 8224 | the prefix is what the user has already typed. */ |
| 8225 | tem |
| 8226 | = XVECTOR (item_properties)->contents[ITEM_PROPERTY_KEYEQ]; |
| 8227 | if (!NILP (tem)) |
| 8228 | /* Insert equivalent keybinding. */ |
| 8229 | s = concat2 (s, tem); |
| 8230 | #endif |
| 8231 | tem |
| 8232 | = XVECTOR (item_properties)->contents[ITEM_PROPERTY_TYPE]; |
| 8233 | if (EQ (tem, QCradio) || EQ (tem, QCtoggle)) |
| 8234 | { |
| 8235 | /* Insert button prefix. */ |
| 8236 | Lisp_Object selected |
| 8237 | = XVECTOR (item_properties)->contents[ITEM_PROPERTY_SELECTED]; |
| 8238 | if (EQ (tem, QCradio)) |
| 8239 | tem = build_string (NILP (selected) ? "(*) " : "( ) "); |
| 8240 | else |
| 8241 | tem = build_string (NILP (selected) ? "[X] " : "[ ] "); |
| 8242 | s = concat2 (tem, s); |
| 8243 | } |
| 8244 | |
| 8245 | |
| 8246 | /* If we have room for the prompt string, add it to this line. |
| 8247 | If this is the first on the line, always add it. */ |
| 8248 | if ((SCHARS (s) + i + 2 |
| 8249 | + (char_matches ? 0 : SCHARS (desc) + 3)) |
| 8250 | < width |
| 8251 | || !notfirst) |
| 8252 | { |
| 8253 | int thiswidth; |
| 8254 | |
| 8255 | /* Punctuate between strings. */ |
| 8256 | if (notfirst) |
| 8257 | { |
| 8258 | strcpy (menu + i, ", "); |
| 8259 | i += 2; |
| 8260 | } |
| 8261 | notfirst = 1; |
| 8262 | nobindings = 0 ; |
| 8263 | |
| 8264 | /* If the char to type doesn't match the string's |
| 8265 | first char, explicitly show what char to type. */ |
| 8266 | if (! char_matches) |
| 8267 | { |
| 8268 | /* Add as much of string as fits. */ |
| 8269 | thiswidth = SCHARS (desc); |
| 8270 | if (thiswidth + i > width) |
| 8271 | thiswidth = width - i; |
| 8272 | bcopy (SDATA (desc), menu + i, thiswidth); |
| 8273 | i += thiswidth; |
| 8274 | strcpy (menu + i, " = "); |
| 8275 | i += 3; |
| 8276 | } |
| 8277 | |
| 8278 | /* Add as much of string as fits. */ |
| 8279 | thiswidth = SCHARS (s); |
| 8280 | if (thiswidth + i > width) |
| 8281 | thiswidth = width - i; |
| 8282 | bcopy (SDATA (s), menu + i, thiswidth); |
| 8283 | i += thiswidth; |
| 8284 | menu[i] = 0; |
| 8285 | } |
| 8286 | else |
| 8287 | { |
| 8288 | /* If this element does not fit, end the line now, |
| 8289 | and save the element for the next line. */ |
| 8290 | strcpy (menu + i, "..."); |
| 8291 | break; |
| 8292 | } |
| 8293 | } |
| 8294 | |
| 8295 | /* Move past this element. */ |
| 8296 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
| 8297 | /* Handle reaching end of dense table. */ |
| 8298 | idx = -1; |
| 8299 | if (idx >= 0) |
| 8300 | idx++; |
| 8301 | else |
| 8302 | rest = Fcdr_safe (rest); |
| 8303 | } |
| 8304 | } |
| 8305 | |
| 8306 | /* Prompt with that and read response. */ |
| 8307 | message2_nolog (menu, strlen (menu), |
| 8308 | ! NILP (current_buffer->enable_multibyte_characters)); |
| 8309 | |
| 8310 | /* Make believe its not a keyboard macro in case the help char |
| 8311 | is pressed. Help characters are not recorded because menu prompting |
| 8312 | is not used on replay. |
| 8313 | */ |
| 8314 | orig_defn_macro = current_kboard->defining_kbd_macro; |
| 8315 | current_kboard->defining_kbd_macro = Qnil; |
| 8316 | do |
| 8317 | obj = read_char (commandflag, 0, 0, Qt, 0, NULL); |
| 8318 | while (BUFFERP (obj)); |
| 8319 | current_kboard->defining_kbd_macro = orig_defn_macro; |
| 8320 | |
| 8321 | if (!INTEGERP (obj)) |
| 8322 | return obj; |
| 8323 | else |
| 8324 | ch = XINT (obj); |
| 8325 | |
| 8326 | if (! EQ (obj, menu_prompt_more_char) |
| 8327 | && (!INTEGERP (menu_prompt_more_char) |
| 8328 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
| 8329 | { |
| 8330 | if (!NILP (current_kboard->defining_kbd_macro)) |
| 8331 | store_kbd_macro_char (obj); |
| 8332 | return obj; |
| 8333 | } |
| 8334 | /* Help char - go round again */ |
| 8335 | } |
| 8336 | } |
| 8337 | \f |
| 8338 | /* Reading key sequences. */ |
| 8339 | |
| 8340 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings |
| 8341 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a |
| 8342 | keymap, or nil otherwise. Return the index of the first keymap in |
| 8343 | which KEY has any binding, or NMAPS if no map has a binding. |
| 8344 | |
| 8345 | If KEY is a meta ASCII character, treat it like meta-prefix-char |
| 8346 | followed by the corresponding non-meta character. Keymaps in |
| 8347 | CURRENT with non-prefix bindings for meta-prefix-char become nil in |
| 8348 | NEXT. |
| 8349 | |
| 8350 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
| 8351 | unmodified. |
| 8352 | |
| 8353 | NEXT may be the same array as CURRENT. */ |
| 8354 | |
| 8355 | static int |
| 8356 | follow_key (key, nmaps, current, defs, next) |
| 8357 | Lisp_Object key; |
| 8358 | Lisp_Object *current, *defs, *next; |
| 8359 | int nmaps; |
| 8360 | { |
| 8361 | int i, first_binding; |
| 8362 | |
| 8363 | first_binding = nmaps; |
| 8364 | for (i = nmaps - 1; i >= 0; i--) |
| 8365 | { |
| 8366 | if (! NILP (current[i])) |
| 8367 | { |
| 8368 | defs[i] = access_keymap (current[i], key, 1, 0, 1); |
| 8369 | if (! NILP (defs[i])) |
| 8370 | first_binding = i; |
| 8371 | } |
| 8372 | else |
| 8373 | defs[i] = Qnil; |
| 8374 | } |
| 8375 | |
| 8376 | /* Given the set of bindings we've found, produce the next set of maps. */ |
| 8377 | if (first_binding < nmaps) |
| 8378 | for (i = 0; i < nmaps; i++) |
| 8379 | next[i] = NILP (defs[i]) ? Qnil : get_keymap (defs[i], 0, 1); |
| 8380 | |
| 8381 | return first_binding; |
| 8382 | } |
| 8383 | |
| 8384 | /* Structure used to keep track of partial application of key remapping |
| 8385 | such as Vfunction_key_map and Vkey_translation_map. */ |
| 8386 | typedef struct keyremap |
| 8387 | { |
| 8388 | Lisp_Object map, parent; |
| 8389 | int start, end; |
| 8390 | } keyremap; |
| 8391 | |
| 8392 | /* Lookup KEY in MAP. |
| 8393 | MAP is a keymap mapping keys to key vectors or functions. |
| 8394 | If the mapping is a function and DO_FUNCTION is non-zero, then |
| 8395 | the function is called with PROMPT as parameter and its return |
| 8396 | value is used as the return value of this function (after checking |
| 8397 | that it is indeed a vector). */ |
| 8398 | |
| 8399 | static Lisp_Object |
| 8400 | access_keymap_keyremap (map, key, prompt, do_funcall) |
| 8401 | Lisp_Object map, key, prompt; |
| 8402 | int do_funcall; |
| 8403 | { |
| 8404 | Lisp_Object next; |
| 8405 | |
| 8406 | next = access_keymap (map, key, 1, 0, 1); |
| 8407 | |
| 8408 | /* Handle symbol with autoload definition. */ |
| 8409 | if (SYMBOLP (next) && !NILP (Ffboundp (next)) |
| 8410 | && CONSP (XSYMBOL (next)->function) |
| 8411 | && EQ (XCAR (XSYMBOL (next)->function), Qautoload)) |
| 8412 | do_autoload (XSYMBOL (next)->function, next); |
| 8413 | |
| 8414 | /* Handle a symbol whose function definition is a keymap |
| 8415 | or an array. */ |
| 8416 | if (SYMBOLP (next) && !NILP (Ffboundp (next)) |
| 8417 | && (ARRAYP (XSYMBOL (next)->function) |
| 8418 | || KEYMAPP (XSYMBOL (next)->function))) |
| 8419 | next = XSYMBOL (next)->function; |
| 8420 | |
| 8421 | /* If the keymap gives a function, not an |
| 8422 | array, then call the function with one arg and use |
| 8423 | its value instead. */ |
| 8424 | if (SYMBOLP (next) && !NILP (Ffboundp (next)) && do_funcall) |
| 8425 | { |
| 8426 | Lisp_Object tem; |
| 8427 | tem = next; |
| 8428 | |
| 8429 | next = call1 (next, prompt); |
| 8430 | /* If the function returned something invalid, |
| 8431 | barf--don't ignore it. |
| 8432 | (To ignore it safely, we would need to gcpro a bunch of |
| 8433 | other variables.) */ |
| 8434 | if (! (VECTORP (next) || STRINGP (next))) |
| 8435 | error ("Function %s returns invalid key sequence", tem); |
| 8436 | } |
| 8437 | return next; |
| 8438 | } |
| 8439 | |
| 8440 | /* Do one step of the key remapping used for function-key-map and |
| 8441 | key-translation-map: |
| 8442 | KEYBUF is the buffer holding the input events. |
| 8443 | BUFSIZE is its maximum size. |
| 8444 | FKEY is a pointer to the keyremap structure to use. |
| 8445 | INPUT is the index of the last element in KEYBUF. |
| 8446 | DOIT if non-zero says that the remapping can actually take place. |
| 8447 | DIFF is used to return the number of keys added/removed by the remapping. |
| 8448 | PARENT is the root of the keymap. |
| 8449 | PROMPT is the prompt to use if the remapping happens through a function. |
| 8450 | The return value is non-zero if the remapping actually took place. */ |
| 8451 | |
| 8452 | static int |
| 8453 | keyremap_step (keybuf, bufsize, fkey, input, doit, diff, prompt) |
| 8454 | Lisp_Object *keybuf, prompt; |
| 8455 | keyremap *fkey; |
| 8456 | int input, doit, *diff, bufsize; |
| 8457 | { |
| 8458 | Lisp_Object next, key; |
| 8459 | |
| 8460 | key = keybuf[fkey->end++]; |
| 8461 | next = access_keymap_keyremap (fkey->map, key, prompt, doit); |
| 8462 | |
| 8463 | /* If keybuf[fkey->start..fkey->end] is bound in the |
| 8464 | map and we're in a position to do the key remapping, replace it with |
| 8465 | the binding and restart with fkey->start at the end. */ |
| 8466 | if ((VECTORP (next) || STRINGP (next)) && doit) |
| 8467 | { |
| 8468 | int len = XFASTINT (Flength (next)); |
| 8469 | int i; |
| 8470 | |
| 8471 | *diff = len - (fkey->end - fkey->start); |
| 8472 | |
| 8473 | if (input + *diff >= bufsize) |
| 8474 | error ("Key sequence too long"); |
| 8475 | |
| 8476 | /* Shift the keys that follow fkey->end. */ |
| 8477 | if (*diff < 0) |
| 8478 | for (i = fkey->end; i < input; i++) |
| 8479 | keybuf[i + *diff] = keybuf[i]; |
| 8480 | else if (*diff > 0) |
| 8481 | for (i = input - 1; i >= fkey->end; i--) |
| 8482 | keybuf[i + *diff] = keybuf[i]; |
| 8483 | /* Overwrite the old keys with the new ones. */ |
| 8484 | for (i = 0; i < len; i++) |
| 8485 | keybuf[fkey->start + i] |
| 8486 | = Faref (next, make_number (i)); |
| 8487 | |
| 8488 | fkey->start = fkey->end += *diff; |
| 8489 | fkey->map = fkey->parent; |
| 8490 | |
| 8491 | return 1; |
| 8492 | } |
| 8493 | |
| 8494 | fkey->map = get_keymap (next, 0, 1); |
| 8495 | |
| 8496 | /* If we no longer have a bound suffix, try a new position for |
| 8497 | fkey->start. */ |
| 8498 | if (!CONSP (fkey->map)) |
| 8499 | { |
| 8500 | fkey->end = ++fkey->start; |
| 8501 | fkey->map = fkey->parent; |
| 8502 | } |
| 8503 | return 0; |
| 8504 | } |
| 8505 | |
| 8506 | /* Read a sequence of keys that ends with a non prefix character, |
| 8507 | storing it in KEYBUF, a buffer of size BUFSIZE. |
| 8508 | Prompt with PROMPT. |
| 8509 | Return the length of the key sequence stored. |
| 8510 | Return -1 if the user rejected a command menu. |
| 8511 | |
| 8512 | Echo starting immediately unless `prompt' is 0. |
| 8513 | |
| 8514 | Where a key sequence ends depends on the currently active keymaps. |
| 8515 | These include any minor mode keymaps active in the current buffer, |
| 8516 | the current buffer's local map, and the global map. |
| 8517 | |
| 8518 | If a key sequence has no other bindings, we check Vfunction_key_map |
| 8519 | to see if some trailing subsequence might be the beginning of a |
| 8520 | function key's sequence. If so, we try to read the whole function |
| 8521 | key, and substitute its symbolic name into the key sequence. |
| 8522 | |
| 8523 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
| 8524 | `double-' events into similar click events, if that would make them |
| 8525 | bound. We try to turn `triple-' events first into `double-' events, |
| 8526 | then into clicks. |
| 8527 | |
| 8528 | If we get a mouse click in a mode line, vertical divider, or other |
| 8529 | non-text area, we treat the click as if it were prefixed by the |
| 8530 | symbol denoting that area - `mode-line', `vertical-line', or |
| 8531 | whatever. |
| 8532 | |
| 8533 | If the sequence starts with a mouse click, we read the key sequence |
| 8534 | with respect to the buffer clicked on, not the current buffer. |
| 8535 | |
| 8536 | If the user switches frames in the midst of a key sequence, we put |
| 8537 | off the switch-frame event until later; the next call to |
| 8538 | read_char will return it. |
| 8539 | |
| 8540 | If FIX_CURRENT_BUFFER is nonzero, we restore current_buffer |
| 8541 | from the selected window's buffer. */ |
| 8542 | |
| 8543 | static int |
| 8544 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
| 8545 | can_return_switch_frame, fix_current_buffer) |
| 8546 | Lisp_Object *keybuf; |
| 8547 | int bufsize; |
| 8548 | Lisp_Object prompt; |
| 8549 | int dont_downcase_last; |
| 8550 | int can_return_switch_frame; |
| 8551 | int fix_current_buffer; |
| 8552 | { |
| 8553 | volatile Lisp_Object from_string; |
| 8554 | volatile int count = SPECPDL_INDEX (); |
| 8555 | |
| 8556 | /* How many keys there are in the current key sequence. */ |
| 8557 | volatile int t; |
| 8558 | |
| 8559 | /* The length of the echo buffer when we started reading, and |
| 8560 | the length of this_command_keys when we started reading. */ |
| 8561 | volatile int echo_start; |
| 8562 | volatile int keys_start; |
| 8563 | |
| 8564 | /* The number of keymaps we're scanning right now, and the number of |
| 8565 | keymaps we have allocated space for. */ |
| 8566 | volatile int nmaps; |
| 8567 | volatile int nmaps_allocated = 0; |
| 8568 | |
| 8569 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
| 8570 | the current keymaps. */ |
| 8571 | Lisp_Object *volatile defs = NULL; |
| 8572 | |
| 8573 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
| 8574 | in the current keymaps, or nil where it is not a prefix. */ |
| 8575 | Lisp_Object *volatile submaps = NULL; |
| 8576 | |
| 8577 | /* The local map to start out with at start of key sequence. */ |
| 8578 | volatile Lisp_Object orig_local_map; |
| 8579 | |
| 8580 | /* The map from the `keymap' property to start out with at start of |
| 8581 | key sequence. */ |
| 8582 | volatile Lisp_Object orig_keymap; |
| 8583 | |
| 8584 | /* 1 if we have already considered switching to the local-map property |
| 8585 | of the place where a mouse click occurred. */ |
| 8586 | volatile int localized_local_map = 0; |
| 8587 | |
| 8588 | /* The index in defs[] of the first keymap that has a binding for |
| 8589 | this key sequence. In other words, the lowest i such that |
| 8590 | defs[i] is non-nil. */ |
| 8591 | volatile int first_binding; |
| 8592 | /* Index of the first key that has no binding. |
| 8593 | It is useless to try fkey.start larger than that. */ |
| 8594 | volatile int first_unbound; |
| 8595 | |
| 8596 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
| 8597 | input key. |
| 8598 | |
| 8599 | We use this to recover after recognizing a function key. Once we |
| 8600 | realize that a suffix of the current key sequence is actually a |
| 8601 | function key's escape sequence, we replace the suffix with the |
| 8602 | function key's binding from Vfunction_key_map. Now keybuf |
| 8603 | contains a new and different key sequence, so the echo area, |
| 8604 | this_command_keys, and the submaps and defs arrays are wrong. In |
| 8605 | this situation, we set mock_input to t, set t to 0, and jump to |
| 8606 | restart_sequence; the loop will read keys from keybuf up until |
| 8607 | mock_input, thus rebuilding the state; and then it will resume |
| 8608 | reading characters from the keyboard. */ |
| 8609 | volatile int mock_input = 0; |
| 8610 | |
| 8611 | /* If the sequence is unbound in submaps[], then |
| 8612 | keybuf[fkey.start..fkey.end-1] is a prefix in Vfunction_key_map, |
| 8613 | and fkey.map is its binding. |
| 8614 | |
| 8615 | These might be > t, indicating that all function key scanning |
| 8616 | should hold off until t reaches them. We do this when we've just |
| 8617 | recognized a function key, to avoid searching for the function |
| 8618 | key's again in Vfunction_key_map. */ |
| 8619 | volatile keyremap fkey; |
| 8620 | |
| 8621 | /* Likewise, for key_translation_map. */ |
| 8622 | volatile keyremap keytran; |
| 8623 | |
| 8624 | /* If we receive a `switch-frame' or `select-window' event in the middle of |
| 8625 | a key sequence, we put it off for later. |
| 8626 | While we're reading, we keep the event here. */ |
| 8627 | volatile Lisp_Object delayed_switch_frame; |
| 8628 | |
| 8629 | /* See the comment below... */ |
| 8630 | #if defined (GOBBLE_FIRST_EVENT) |
| 8631 | Lisp_Object first_event; |
| 8632 | #endif |
| 8633 | |
| 8634 | volatile Lisp_Object original_uppercase; |
| 8635 | volatile int original_uppercase_position = -1; |
| 8636 | |
| 8637 | /* Gets around Microsoft compiler limitations. */ |
| 8638 | int dummyflag = 0; |
| 8639 | |
| 8640 | struct buffer *starting_buffer; |
| 8641 | |
| 8642 | /* List of events for which a fake prefix key has been generated. */ |
| 8643 | volatile Lisp_Object fake_prefixed_keys = Qnil; |
| 8644 | |
| 8645 | #if defined (GOBBLE_FIRST_EVENT) |
| 8646 | int junk; |
| 8647 | #endif |
| 8648 | |
| 8649 | struct gcpro gcpro1; |
| 8650 | |
| 8651 | GCPRO1 (fake_prefixed_keys); |
| 8652 | raw_keybuf_count = 0; |
| 8653 | |
| 8654 | last_nonmenu_event = Qnil; |
| 8655 | |
| 8656 | delayed_switch_frame = Qnil; |
| 8657 | fkey.map = fkey.parent = Vfunction_key_map; |
| 8658 | keytran.map = keytran.parent = Vkey_translation_map; |
| 8659 | /* If there is no translation-map, turn off scanning. */ |
| 8660 | fkey.start = fkey.end = KEYMAPP (fkey.map) ? 0 : bufsize + 1; |
| 8661 | keytran.start = keytran.end = KEYMAPP (keytran.map) ? 0 : bufsize + 1; |
| 8662 | |
| 8663 | if (INTERACTIVE) |
| 8664 | { |
| 8665 | if (!NILP (prompt)) |
| 8666 | echo_prompt (prompt); |
| 8667 | else if (cursor_in_echo_area |
| 8668 | && (FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 8669 | && NILP (Fzerop (Vecho_keystrokes))) |
| 8670 | /* This doesn't put in a dash if the echo buffer is empty, so |
| 8671 | you don't always see a dash hanging out in the minibuffer. */ |
| 8672 | echo_dash (); |
| 8673 | } |
| 8674 | |
| 8675 | /* Record the initial state of the echo area and this_command_keys; |
| 8676 | we will need to restore them if we replay a key sequence. */ |
| 8677 | if (INTERACTIVE) |
| 8678 | echo_start = echo_length (); |
| 8679 | keys_start = this_command_key_count; |
| 8680 | this_single_command_key_start = keys_start; |
| 8681 | |
| 8682 | #if defined (GOBBLE_FIRST_EVENT) |
| 8683 | /* This doesn't quite work, because some of the things that read_char |
| 8684 | does cannot safely be bypassed. It seems too risky to try to make |
| 8685 | this work right. */ |
| 8686 | |
| 8687 | /* Read the first char of the sequence specially, before setting |
| 8688 | up any keymaps, in case a filter runs and switches buffers on us. */ |
| 8689 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
| 8690 | &junk, NULL); |
| 8691 | #endif /* GOBBLE_FIRST_EVENT */ |
| 8692 | |
| 8693 | orig_local_map = get_local_map (PT, current_buffer, Qlocal_map); |
| 8694 | orig_keymap = get_local_map (PT, current_buffer, Qkeymap); |
| 8695 | from_string = Qnil; |
| 8696 | |
| 8697 | /* We jump here when the key sequence has been thoroughly changed, and |
| 8698 | we need to rescan it starting from the beginning. When we jump here, |
| 8699 | keybuf[0..mock_input] holds the sequence we should reread. */ |
| 8700 | replay_sequence: |
| 8701 | |
| 8702 | starting_buffer = current_buffer; |
| 8703 | first_unbound = bufsize + 1; |
| 8704 | |
| 8705 | /* Build our list of keymaps. |
| 8706 | If we recognize a function key and replace its escape sequence in |
| 8707 | keybuf with its symbol, or if the sequence starts with a mouse |
| 8708 | click and we need to switch buffers, we jump back here to rebuild |
| 8709 | the initial keymaps from the current buffer. */ |
| 8710 | nmaps = 0; |
| 8711 | |
| 8712 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
| 8713 | || !NILP (Voverriding_local_map)) |
| 8714 | { |
| 8715 | if (3 > nmaps_allocated) |
| 8716 | { |
| 8717 | submaps = (Lisp_Object *) alloca (3 * sizeof (submaps[0])); |
| 8718 | defs = (Lisp_Object *) alloca (3 * sizeof (defs[0])); |
| 8719 | nmaps_allocated = 3; |
| 8720 | } |
| 8721 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) |
| 8722 | submaps[nmaps++] = current_kboard->Voverriding_terminal_local_map; |
| 8723 | if (!NILP (Voverriding_local_map)) |
| 8724 | submaps[nmaps++] = Voverriding_local_map; |
| 8725 | } |
| 8726 | else |
| 8727 | { |
| 8728 | int nminor; |
| 8729 | int total; |
| 8730 | Lisp_Object *maps; |
| 8731 | |
| 8732 | nminor = current_minor_maps (0, &maps); |
| 8733 | total = nminor + (!NILP (orig_keymap) ? 3 : 2); |
| 8734 | |
| 8735 | if (total > nmaps_allocated) |
| 8736 | { |
| 8737 | submaps = (Lisp_Object *) alloca (total * sizeof (submaps[0])); |
| 8738 | defs = (Lisp_Object *) alloca (total * sizeof (defs[0])); |
| 8739 | nmaps_allocated = total; |
| 8740 | } |
| 8741 | |
| 8742 | if (!NILP (orig_keymap)) |
| 8743 | submaps[nmaps++] = orig_keymap; |
| 8744 | |
| 8745 | bcopy (maps, (void *) (submaps + nmaps), |
| 8746 | nminor * sizeof (submaps[0])); |
| 8747 | |
| 8748 | nmaps += nminor; |
| 8749 | |
| 8750 | submaps[nmaps++] = orig_local_map; |
| 8751 | } |
| 8752 | submaps[nmaps++] = current_global_map; |
| 8753 | |
| 8754 | /* Find an accurate initial value for first_binding. */ |
| 8755 | for (first_binding = 0; first_binding < nmaps; first_binding++) |
| 8756 | if (! NILP (submaps[first_binding])) |
| 8757 | break; |
| 8758 | |
| 8759 | /* Start from the beginning in keybuf. */ |
| 8760 | t = 0; |
| 8761 | |
| 8762 | /* These are no-ops the first time through, but if we restart, they |
| 8763 | revert the echo area and this_command_keys to their original state. */ |
| 8764 | this_command_key_count = keys_start; |
| 8765 | if (INTERACTIVE && t < mock_input) |
| 8766 | echo_truncate (echo_start); |
| 8767 | |
| 8768 | /* If the best binding for the current key sequence is a keymap, or |
| 8769 | we may be looking at a function key's escape sequence, keep on |
| 8770 | reading. */ |
| 8771 | while (first_binding < nmaps |
| 8772 | /* Keep reading as long as there's a prefix binding. */ |
| 8773 | ? !NILP (submaps[first_binding]) |
| 8774 | /* Don't return in the middle of a possible function key sequence, |
| 8775 | if the only bindings we found were via case conversion. |
| 8776 | Thus, if ESC O a has a function-key-map translation |
| 8777 | and ESC o has a binding, don't return after ESC O, |
| 8778 | so that we can translate ESC O plus the next character. */ |
| 8779 | : (fkey.start < t || keytran.start < t)) |
| 8780 | { |
| 8781 | Lisp_Object key; |
| 8782 | int used_mouse_menu = 0; |
| 8783 | |
| 8784 | /* Where the last real key started. If we need to throw away a |
| 8785 | key that has expanded into more than one element of keybuf |
| 8786 | (say, a mouse click on the mode line which is being treated |
| 8787 | as [mode-line (mouse-...)], then we backtrack to this point |
| 8788 | of keybuf. */ |
| 8789 | volatile int last_real_key_start; |
| 8790 | |
| 8791 | /* These variables are analogous to echo_start and keys_start; |
| 8792 | while those allow us to restart the entire key sequence, |
| 8793 | echo_local_start and keys_local_start allow us to throw away |
| 8794 | just one key. */ |
| 8795 | volatile int echo_local_start, keys_local_start, local_first_binding; |
| 8796 | |
| 8797 | eassert (fkey.end == t || (fkey.end > t && fkey.end <= mock_input)); |
| 8798 | eassert (fkey.start <= fkey.end); |
| 8799 | eassert (keytran.start <= keytran.end); |
| 8800 | /* key-translation-map is applied *after* function-key-map. */ |
| 8801 | eassert (keytran.end <= fkey.start); |
| 8802 | |
| 8803 | if (first_unbound < fkey.start && first_unbound < keytran.start) |
| 8804 | { /* The prefix upto first_unbound has no binding and has |
| 8805 | no translation left to do either, so we know it's unbound. |
| 8806 | If we don't stop now, we risk staying here indefinitely |
| 8807 | (if the user keeps entering fkey or keytran prefixes |
| 8808 | like C-c ESC ESC ESC ESC ...) */ |
| 8809 | int i; |
| 8810 | for (i = first_unbound + 1; i < t; i++) |
| 8811 | keybuf[i - first_unbound - 1] = keybuf[i]; |
| 8812 | mock_input = t - first_unbound - 1; |
| 8813 | fkey.end = fkey.start -= first_unbound + 1; |
| 8814 | fkey.map = fkey.parent; |
| 8815 | keytran.end = keytran.start -= first_unbound + 1; |
| 8816 | keytran.map = keytran.parent; |
| 8817 | goto replay_sequence; |
| 8818 | } |
| 8819 | |
| 8820 | if (t >= bufsize) |
| 8821 | error ("Key sequence too long"); |
| 8822 | |
| 8823 | if (INTERACTIVE) |
| 8824 | echo_local_start = echo_length (); |
| 8825 | keys_local_start = this_command_key_count; |
| 8826 | local_first_binding = first_binding; |
| 8827 | |
| 8828 | replay_key: |
| 8829 | /* These are no-ops, unless we throw away a keystroke below and |
| 8830 | jumped back up to replay_key; in that case, these restore the |
| 8831 | variables to their original state, allowing us to replay the |
| 8832 | loop. */ |
| 8833 | if (INTERACTIVE && t < mock_input) |
| 8834 | echo_truncate (echo_local_start); |
| 8835 | this_command_key_count = keys_local_start; |
| 8836 | first_binding = local_first_binding; |
| 8837 | |
| 8838 | /* By default, assume each event is "real". */ |
| 8839 | last_real_key_start = t; |
| 8840 | |
| 8841 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
| 8842 | if (t < mock_input) |
| 8843 | { |
| 8844 | key = keybuf[t]; |
| 8845 | add_command_key (key); |
| 8846 | if ((FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 8847 | && NILP (Fzerop (Vecho_keystrokes))) |
| 8848 | echo_char (key); |
| 8849 | } |
| 8850 | |
| 8851 | /* If not, we should actually read a character. */ |
| 8852 | else |
| 8853 | { |
| 8854 | { |
| 8855 | #ifdef MULTI_KBOARD |
| 8856 | KBOARD *interrupted_kboard = current_kboard; |
| 8857 | struct frame *interrupted_frame = SELECTED_FRAME (); |
| 8858 | if (setjmp (wrong_kboard_jmpbuf)) |
| 8859 | { |
| 8860 | if (!NILP (delayed_switch_frame)) |
| 8861 | { |
| 8862 | interrupted_kboard->kbd_queue |
| 8863 | = Fcons (delayed_switch_frame, |
| 8864 | interrupted_kboard->kbd_queue); |
| 8865 | delayed_switch_frame = Qnil; |
| 8866 | } |
| 8867 | while (t > 0) |
| 8868 | interrupted_kboard->kbd_queue |
| 8869 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); |
| 8870 | |
| 8871 | /* If the side queue is non-empty, ensure it begins with a |
| 8872 | switch-frame, so we'll replay it in the right context. */ |
| 8873 | if (CONSP (interrupted_kboard->kbd_queue) |
| 8874 | && (key = XCAR (interrupted_kboard->kbd_queue), |
| 8875 | !(EVENT_HAS_PARAMETERS (key) |
| 8876 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), |
| 8877 | Qswitch_frame)))) |
| 8878 | { |
| 8879 | Lisp_Object frame; |
| 8880 | XSETFRAME (frame, interrupted_frame); |
| 8881 | interrupted_kboard->kbd_queue |
| 8882 | = Fcons (make_lispy_switch_frame (frame), |
| 8883 | interrupted_kboard->kbd_queue); |
| 8884 | } |
| 8885 | mock_input = 0; |
| 8886 | orig_local_map = get_local_map (PT, current_buffer, Qlocal_map); |
| 8887 | orig_keymap = get_local_map (PT, current_buffer, Qkeymap); |
| 8888 | goto replay_sequence; |
| 8889 | } |
| 8890 | #endif |
| 8891 | key = read_char (NILP (prompt), nmaps, |
| 8892 | (Lisp_Object *) submaps, last_nonmenu_event, |
| 8893 | &used_mouse_menu, NULL); |
| 8894 | } |
| 8895 | |
| 8896 | /* read_char returns t when it shows a menu and the user rejects it. |
| 8897 | Just return -1. */ |
| 8898 | if (EQ (key, Qt)) |
| 8899 | { |
| 8900 | unbind_to (count, Qnil); |
| 8901 | UNGCPRO; |
| 8902 | return -1; |
| 8903 | } |
| 8904 | |
| 8905 | /* read_char returns -1 at the end of a macro. |
| 8906 | Emacs 18 handles this by returning immediately with a |
| 8907 | zero, so that's what we'll do. */ |
| 8908 | if (INTEGERP (key) && XINT (key) == -1) |
| 8909 | { |
| 8910 | t = 0; |
| 8911 | /* The Microsoft C compiler can't handle the goto that |
| 8912 | would go here. */ |
| 8913 | dummyflag = 1; |
| 8914 | break; |
| 8915 | } |
| 8916 | |
| 8917 | /* If the current buffer has been changed from under us, the |
| 8918 | keymap may have changed, so replay the sequence. */ |
| 8919 | if (BUFFERP (key)) |
| 8920 | { |
| 8921 | timer_resume_idle (); |
| 8922 | |
| 8923 | mock_input = t; |
| 8924 | /* Reset the current buffer from the selected window |
| 8925 | in case something changed the former and not the latter. |
| 8926 | This is to be more consistent with the behavior |
| 8927 | of the command_loop_1. */ |
| 8928 | if (fix_current_buffer) |
| 8929 | { |
| 8930 | if (! FRAME_LIVE_P (XFRAME (selected_frame))) |
| 8931 | Fkill_emacs (Qnil); |
| 8932 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
| 8933 | Fset_buffer (XWINDOW (selected_window)->buffer); |
| 8934 | } |
| 8935 | |
| 8936 | orig_local_map = get_local_map (PT, current_buffer, Qlocal_map); |
| 8937 | orig_keymap = get_local_map (PT, current_buffer, Qkeymap); |
| 8938 | goto replay_sequence; |
| 8939 | } |
| 8940 | |
| 8941 | /* If we have a quit that was typed in another frame, and |
| 8942 | quit_throw_to_read_char switched buffers, |
| 8943 | replay to get the right keymap. */ |
| 8944 | if (INTEGERP (key) |
| 8945 | && XINT (key) == quit_char |
| 8946 | && current_buffer != starting_buffer) |
| 8947 | { |
| 8948 | GROW_RAW_KEYBUF; |
| 8949 | XVECTOR (raw_keybuf)->contents[raw_keybuf_count++] = key; |
| 8950 | keybuf[t++] = key; |
| 8951 | mock_input = t; |
| 8952 | Vquit_flag = Qnil; |
| 8953 | orig_local_map = get_local_map (PT, current_buffer, Qlocal_map); |
| 8954 | orig_keymap = get_local_map (PT, current_buffer, Qkeymap); |
| 8955 | goto replay_sequence; |
| 8956 | } |
| 8957 | |
| 8958 | Vquit_flag = Qnil; |
| 8959 | |
| 8960 | if (EVENT_HAS_PARAMETERS (key) |
| 8961 | /* Either a `switch-frame' or a `select-window' event. */ |
| 8962 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), Qswitch_frame)) |
| 8963 | { |
| 8964 | /* If we're at the beginning of a key sequence, and the caller |
| 8965 | says it's okay, go ahead and return this event. If we're |
| 8966 | in the midst of a key sequence, delay it until the end. */ |
| 8967 | if (t > 0 || !can_return_switch_frame) |
| 8968 | { |
| 8969 | delayed_switch_frame = key; |
| 8970 | goto replay_key; |
| 8971 | } |
| 8972 | } |
| 8973 | |
| 8974 | GROW_RAW_KEYBUF; |
| 8975 | XVECTOR (raw_keybuf)->contents[raw_keybuf_count++] = key; |
| 8976 | } |
| 8977 | |
| 8978 | /* Clicks in non-text areas get prefixed by the symbol |
| 8979 | in their CHAR-ADDRESS field. For example, a click on |
| 8980 | the mode line is prefixed by the symbol `mode-line'. |
| 8981 | |
| 8982 | Furthermore, key sequences beginning with mouse clicks |
| 8983 | are read using the keymaps of the buffer clicked on, not |
| 8984 | the current buffer. So we may have to switch the buffer |
| 8985 | here. |
| 8986 | |
| 8987 | When we turn one event into two events, we must make sure |
| 8988 | that neither of the two looks like the original--so that, |
| 8989 | if we replay the events, they won't be expanded again. |
| 8990 | If not for this, such reexpansion could happen either here |
| 8991 | or when user programs play with this-command-keys. */ |
| 8992 | if (EVENT_HAS_PARAMETERS (key)) |
| 8993 | { |
| 8994 | Lisp_Object kind; |
| 8995 | Lisp_Object string; |
| 8996 | |
| 8997 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
| 8998 | if (EQ (kind, Qmouse_click)) |
| 8999 | { |
| 9000 | Lisp_Object window, posn; |
| 9001 | |
| 9002 | window = POSN_WINDOW (EVENT_START (key)); |
| 9003 | posn = POSN_POSN (EVENT_START (key)); |
| 9004 | |
| 9005 | if (CONSP (posn) |
| 9006 | || (!NILP (fake_prefixed_keys) |
| 9007 | && !NILP (Fmemq (key, fake_prefixed_keys)))) |
| 9008 | { |
| 9009 | /* We're looking a second time at an event for which |
| 9010 | we generated a fake prefix key. Set |
| 9011 | last_real_key_start appropriately. */ |
| 9012 | if (t > 0) |
| 9013 | last_real_key_start = t - 1; |
| 9014 | } |
| 9015 | |
| 9016 | /* Key sequences beginning with mouse clicks are |
| 9017 | read using the keymaps in the buffer clicked on, |
| 9018 | not the current buffer. If we're at the |
| 9019 | beginning of a key sequence, switch buffers. */ |
| 9020 | if (last_real_key_start == 0 |
| 9021 | && WINDOWP (window) |
| 9022 | && BUFFERP (XWINDOW (window)->buffer) |
| 9023 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
| 9024 | { |
| 9025 | XVECTOR (raw_keybuf)->contents[raw_keybuf_count++] = key; |
| 9026 | keybuf[t] = key; |
| 9027 | mock_input = t + 1; |
| 9028 | |
| 9029 | /* Arrange to go back to the original buffer once we're |
| 9030 | done reading the key sequence. Note that we can't |
| 9031 | use save_excursion_{save,restore} here, because they |
| 9032 | save point as well as the current buffer; we don't |
| 9033 | want to save point, because redisplay may change it, |
| 9034 | to accommodate a Fset_window_start or something. We |
| 9035 | don't want to do this at the top of the function, |
| 9036 | because we may get input from a subprocess which |
| 9037 | wants to change the selected window and stuff (say, |
| 9038 | emacsclient). */ |
| 9039 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 9040 | |
| 9041 | if (! FRAME_LIVE_P (XFRAME (selected_frame))) |
| 9042 | Fkill_emacs (Qnil); |
| 9043 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); |
| 9044 | orig_local_map = get_local_map (PT, current_buffer, |
| 9045 | Qlocal_map); |
| 9046 | orig_keymap = get_local_map (PT, current_buffer, Qkeymap); |
| 9047 | goto replay_sequence; |
| 9048 | } |
| 9049 | |
| 9050 | /* For a mouse click, get the local text-property keymap |
| 9051 | of the place clicked on, rather than point. */ |
| 9052 | if (last_real_key_start == 0 |
| 9053 | && CONSP (XCDR (key)) |
| 9054 | && ! localized_local_map) |
| 9055 | { |
| 9056 | Lisp_Object map_here, start, pos; |
| 9057 | |
| 9058 | localized_local_map = 1; |
| 9059 | start = EVENT_START (key); |
| 9060 | |
| 9061 | if (CONSP (start) && POSN_INBUFFER_P (start)) |
| 9062 | { |
| 9063 | pos = POSN_BUFFER_POSN (start); |
| 9064 | if (INTEGERP (pos) |
| 9065 | && XINT (pos) >= BEG && XINT (pos) <= Z) |
| 9066 | { |
| 9067 | map_here = get_local_map (XINT (pos), |
| 9068 | current_buffer, Qlocal_map); |
| 9069 | if (!EQ (map_here, orig_local_map)) |
| 9070 | { |
| 9071 | orig_local_map = map_here; |
| 9072 | keybuf[t] = key; |
| 9073 | mock_input = t + 1; |
| 9074 | |
| 9075 | goto replay_sequence; |
| 9076 | } |
| 9077 | map_here = get_local_map (XINT (pos), |
| 9078 | current_buffer, Qkeymap); |
| 9079 | if (!EQ (map_here, orig_keymap)) |
| 9080 | { |
| 9081 | orig_keymap = map_here; |
| 9082 | keybuf[t] = key; |
| 9083 | mock_input = t + 1; |
| 9084 | |
| 9085 | goto replay_sequence; |
| 9086 | } |
| 9087 | } |
| 9088 | } |
| 9089 | } |
| 9090 | |
| 9091 | /* Expand mode-line and scroll-bar events into two events: |
| 9092 | use posn as a fake prefix key. */ |
| 9093 | if (SYMBOLP (posn) |
| 9094 | && (NILP (fake_prefixed_keys) |
| 9095 | || NILP (Fmemq (key, fake_prefixed_keys)))) |
| 9096 | { |
| 9097 | if (t + 1 >= bufsize) |
| 9098 | error ("Key sequence too long"); |
| 9099 | |
| 9100 | keybuf[t] = posn; |
| 9101 | keybuf[t + 1] = key; |
| 9102 | mock_input = t + 2; |
| 9103 | |
| 9104 | /* Record that a fake prefix key has been generated |
| 9105 | for KEY. Don't modify the event; this would |
| 9106 | prevent proper action when the event is pushed |
| 9107 | back into unread-command-events. */ |
| 9108 | fake_prefixed_keys = Fcons (key, fake_prefixed_keys); |
| 9109 | |
| 9110 | /* If on a mode line string with a local keymap, |
| 9111 | reconsider the key sequence with that keymap. */ |
| 9112 | if (string = POSN_STRING (EVENT_START (key)), |
| 9113 | (CONSP (string) && STRINGP (XCAR (string)))) |
| 9114 | { |
| 9115 | Lisp_Object pos, map, map2; |
| 9116 | |
| 9117 | pos = XCDR (string); |
| 9118 | string = XCAR (string); |
| 9119 | if (XINT (pos) >= 0 |
| 9120 | && XINT (pos) < SCHARS (string)) |
| 9121 | { |
| 9122 | map = Fget_text_property (pos, Qlocal_map, string); |
| 9123 | if (!NILP (map)) |
| 9124 | orig_local_map = map; |
| 9125 | map2 = Fget_text_property (pos, Qkeymap, string); |
| 9126 | if (!NILP (map2)) |
| 9127 | orig_keymap = map2; |
| 9128 | if (!NILP (map) || !NILP (map2)) |
| 9129 | goto replay_sequence; |
| 9130 | } |
| 9131 | } |
| 9132 | |
| 9133 | goto replay_key; |
| 9134 | } |
| 9135 | else if (NILP (from_string) |
| 9136 | && (string = POSN_STRING (EVENT_START (key)), |
| 9137 | (CONSP (string) && STRINGP (XCAR (string))))) |
| 9138 | { |
| 9139 | /* For a click on a string, i.e. overlay string or a |
| 9140 | string displayed via the `display' property, |
| 9141 | consider `local-map' and `keymap' properties of |
| 9142 | that string. */ |
| 9143 | Lisp_Object pos, map, map2; |
| 9144 | |
| 9145 | pos = XCDR (string); |
| 9146 | string = XCAR (string); |
| 9147 | if (XINT (pos) >= 0 |
| 9148 | && XINT (pos) < SCHARS (string)) |
| 9149 | { |
| 9150 | map = Fget_text_property (pos, Qlocal_map, string); |
| 9151 | if (!NILP (map)) |
| 9152 | orig_local_map = map; |
| 9153 | map2 = Fget_text_property (pos, Qkeymap, string); |
| 9154 | if (!NILP (map2)) |
| 9155 | orig_keymap = map2; |
| 9156 | |
| 9157 | if (!NILP (map) || !NILP (map2)) |
| 9158 | { |
| 9159 | from_string = string; |
| 9160 | goto replay_sequence; |
| 9161 | } |
| 9162 | } |
| 9163 | } |
| 9164 | } |
| 9165 | else if (CONSP (XCDR (key)) |
| 9166 | && CONSP (EVENT_START (key)) |
| 9167 | && CONSP (XCDR (EVENT_START (key)))) |
| 9168 | { |
| 9169 | Lisp_Object posn; |
| 9170 | |
| 9171 | posn = POSN_POSN (EVENT_START (key)); |
| 9172 | /* Handle menu-bar events: |
| 9173 | insert the dummy prefix event `menu-bar'. */ |
| 9174 | if (EQ (posn, Qmenu_bar) || EQ (posn, Qtool_bar)) |
| 9175 | { |
| 9176 | if (t + 1 >= bufsize) |
| 9177 | error ("Key sequence too long"); |
| 9178 | keybuf[t] = posn; |
| 9179 | keybuf[t+1] = key; |
| 9180 | |
| 9181 | /* Zap the position in key, so we know that we've |
| 9182 | expanded it, and don't try to do so again. */ |
| 9183 | POSN_SET_POSN (EVENT_START (key), |
| 9184 | Fcons (posn, Qnil)); |
| 9185 | |
| 9186 | mock_input = t + 2; |
| 9187 | goto replay_sequence; |
| 9188 | } |
| 9189 | else if (CONSP (posn)) |
| 9190 | { |
| 9191 | /* We're looking at the second event of a |
| 9192 | sequence which we expanded before. Set |
| 9193 | last_real_key_start appropriately. */ |
| 9194 | if (last_real_key_start == t && t > 0) |
| 9195 | last_real_key_start = t - 1; |
| 9196 | } |
| 9197 | } |
| 9198 | } |
| 9199 | |
| 9200 | /* We have finally decided that KEY is something we might want |
| 9201 | to look up. */ |
| 9202 | first_binding = (follow_key (key, |
| 9203 | nmaps - first_binding, |
| 9204 | submaps + first_binding, |
| 9205 | defs + first_binding, |
| 9206 | submaps + first_binding) |
| 9207 | + first_binding); |
| 9208 | |
| 9209 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
| 9210 | if (first_binding < nmaps) |
| 9211 | /* This is needed for the following scenario: |
| 9212 | event 0: a down-event that gets dropped by calling replay_key. |
| 9213 | event 1: some normal prefix like C-h. |
| 9214 | After event 0, first_unbound is 0, after event 1 fkey.start |
| 9215 | and keytran.start are both 1, so when we see that C-h is bound, |
| 9216 | we need to update first_unbound. */ |
| 9217 | first_unbound = max (t + 1, first_unbound); |
| 9218 | else |
| 9219 | { |
| 9220 | Lisp_Object head; |
| 9221 | |
| 9222 | /* Remember the position to put an upper bound on fkey.start. */ |
| 9223 | first_unbound = min (t, first_unbound); |
| 9224 | |
| 9225 | head = EVENT_HEAD (key); |
| 9226 | if (help_char_p (head) && t > 0) |
| 9227 | { |
| 9228 | read_key_sequence_cmd = Vprefix_help_command; |
| 9229 | keybuf[t++] = key; |
| 9230 | last_nonmenu_event = key; |
| 9231 | /* The Microsoft C compiler can't handle the goto that |
| 9232 | would go here. */ |
| 9233 | dummyflag = 1; |
| 9234 | break; |
| 9235 | } |
| 9236 | |
| 9237 | if (SYMBOLP (head)) |
| 9238 | { |
| 9239 | Lisp_Object breakdown; |
| 9240 | int modifiers; |
| 9241 | |
| 9242 | breakdown = parse_modifiers (head); |
| 9243 | modifiers = XINT (XCAR (XCDR (breakdown))); |
| 9244 | /* Attempt to reduce an unbound mouse event to a simpler |
| 9245 | event that is bound: |
| 9246 | Drags reduce to clicks. |
| 9247 | Double-clicks reduce to clicks. |
| 9248 | Triple-clicks reduce to double-clicks, then to clicks. |
| 9249 | Down-clicks are eliminated. |
| 9250 | Double-downs reduce to downs, then are eliminated. |
| 9251 | Triple-downs reduce to double-downs, then to downs, |
| 9252 | then are eliminated. */ |
| 9253 | if (modifiers & (down_modifier | drag_modifier |
| 9254 | | double_modifier | triple_modifier)) |
| 9255 | { |
| 9256 | while (modifiers & (down_modifier | drag_modifier |
| 9257 | | double_modifier | triple_modifier)) |
| 9258 | { |
| 9259 | Lisp_Object new_head, new_click; |
| 9260 | if (modifiers & triple_modifier) |
| 9261 | modifiers ^= (double_modifier | triple_modifier); |
| 9262 | else if (modifiers & double_modifier) |
| 9263 | modifiers &= ~double_modifier; |
| 9264 | else if (modifiers & drag_modifier) |
| 9265 | modifiers &= ~drag_modifier; |
| 9266 | else |
| 9267 | { |
| 9268 | /* Dispose of this `down' event by simply jumping |
| 9269 | back to replay_key, to get another event. |
| 9270 | |
| 9271 | Note that if this event came from mock input, |
| 9272 | then just jumping back to replay_key will just |
| 9273 | hand it to us again. So we have to wipe out any |
| 9274 | mock input. |
| 9275 | |
| 9276 | We could delete keybuf[t] and shift everything |
| 9277 | after that to the left by one spot, but we'd also |
| 9278 | have to fix up any variable that points into |
| 9279 | keybuf, and shifting isn't really necessary |
| 9280 | anyway. |
| 9281 | |
| 9282 | Adding prefixes for non-textual mouse clicks |
| 9283 | creates two characters of mock input, and both |
| 9284 | must be thrown away. If we're only looking at |
| 9285 | the prefix now, we can just jump back to |
| 9286 | replay_key. On the other hand, if we've already |
| 9287 | processed the prefix, and now the actual click |
| 9288 | itself is giving us trouble, then we've lost the |
| 9289 | state of the keymaps we want to backtrack to, and |
| 9290 | we need to replay the whole sequence to rebuild |
| 9291 | it. |
| 9292 | |
| 9293 | Beyond that, only function key expansion could |
| 9294 | create more than two keys, but that should never |
| 9295 | generate mouse events, so it's okay to zero |
| 9296 | mock_input in that case too. |
| 9297 | |
| 9298 | FIXME: The above paragraph seems just plain |
| 9299 | wrong, if you consider things like |
| 9300 | xterm-mouse-mode. -stef |
| 9301 | |
| 9302 | Isn't this just the most wonderful code ever? */ |
| 9303 | |
| 9304 | /* If mock_input > t + 1, the above simplification |
| 9305 | will actually end up dropping keys on the floor. |
| 9306 | This is probably OK for now, but even |
| 9307 | if mock_input <= t + 1, we need to adjust fkey |
| 9308 | and keytran. |
| 9309 | Typical case [header-line down-mouse-N]: |
| 9310 | mock_input = 2, t = 1, fkey.end = 1, |
| 9311 | last_real_key_start = 0. */ |
| 9312 | if (fkey.end > last_real_key_start) |
| 9313 | { |
| 9314 | fkey.end = fkey.start |
| 9315 | = min (last_real_key_start, fkey.start); |
| 9316 | fkey.map = fkey.parent; |
| 9317 | if (keytran.end > last_real_key_start) |
| 9318 | { |
| 9319 | keytran.end = keytran.start |
| 9320 | = min (last_real_key_start, keytran.start); |
| 9321 | keytran.map = keytran.parent; |
| 9322 | } |
| 9323 | } |
| 9324 | if (t == last_real_key_start) |
| 9325 | { |
| 9326 | mock_input = 0; |
| 9327 | goto replay_key; |
| 9328 | } |
| 9329 | else |
| 9330 | { |
| 9331 | mock_input = last_real_key_start; |
| 9332 | goto replay_sequence; |
| 9333 | } |
| 9334 | } |
| 9335 | |
| 9336 | new_head |
| 9337 | = apply_modifiers (modifiers, XCAR (breakdown)); |
| 9338 | new_click |
| 9339 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); |
| 9340 | |
| 9341 | /* Look for a binding for this new key. follow_key |
| 9342 | promises that it didn't munge submaps the |
| 9343 | last time we called it, since key was unbound. */ |
| 9344 | first_binding |
| 9345 | = (follow_key (new_click, |
| 9346 | nmaps - local_first_binding, |
| 9347 | submaps + local_first_binding, |
| 9348 | defs + local_first_binding, |
| 9349 | submaps + local_first_binding) |
| 9350 | + local_first_binding); |
| 9351 | |
| 9352 | /* If that click is bound, go for it. */ |
| 9353 | if (first_binding < nmaps) |
| 9354 | { |
| 9355 | key = new_click; |
| 9356 | break; |
| 9357 | } |
| 9358 | /* Otherwise, we'll leave key set to the drag event. */ |
| 9359 | } |
| 9360 | } |
| 9361 | } |
| 9362 | } |
| 9363 | |
| 9364 | keybuf[t++] = key; |
| 9365 | /* Normally, last_nonmenu_event gets the previous key we read. |
| 9366 | But when a mouse popup menu is being used, |
| 9367 | we don't update last_nonmenu_event; it continues to hold the mouse |
| 9368 | event that preceded the first level of menu. */ |
| 9369 | if (!used_mouse_menu) |
| 9370 | last_nonmenu_event = key; |
| 9371 | |
| 9372 | /* Record what part of this_command_keys is the current key sequence. */ |
| 9373 | this_single_command_key_start = this_command_key_count - t; |
| 9374 | |
| 9375 | if (first_binding < nmaps && NILP (submaps[first_binding])) |
| 9376 | /* There is a binding and it's not a prefix. |
| 9377 | There is thus no function-key in this sequence. |
| 9378 | Moving fkey.start is important in this case to allow keytran.start |
| 9379 | to go over the sequence before we return (since we keep the |
| 9380 | invariant that keytran.end <= fkey.start). */ |
| 9381 | { |
| 9382 | if (fkey.start < t) |
| 9383 | (fkey.start = fkey.end = t, fkey.map = fkey.parent); |
| 9384 | } |
| 9385 | else |
| 9386 | /* If the sequence is unbound, see if we can hang a function key |
| 9387 | off the end of it. */ |
| 9388 | /* Continue scan from fkey.end until we find a bound suffix. */ |
| 9389 | while (fkey.end < t) |
| 9390 | { |
| 9391 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 9392 | int done, diff; |
| 9393 | |
| 9394 | GCPRO3 (fkey.map, keytran.map, delayed_switch_frame); |
| 9395 | done = keyremap_step (keybuf, bufsize, &fkey, |
| 9396 | max (t, mock_input), |
| 9397 | /* If there's a binding (i.e. |
| 9398 | first_binding >= nmaps) we don't want |
| 9399 | to apply this function-key-mapping. */ |
| 9400 | fkey.end + 1 == t && first_binding >= nmaps, |
| 9401 | &diff, prompt); |
| 9402 | UNGCPRO; |
| 9403 | if (done) |
| 9404 | { |
| 9405 | mock_input = diff + max (t, mock_input); |
| 9406 | goto replay_sequence; |
| 9407 | } |
| 9408 | } |
| 9409 | |
| 9410 | /* Look for this sequence in key-translation-map. |
| 9411 | Scan from keytran.end until we find a bound suffix. */ |
| 9412 | while (keytran.end < fkey.start) |
| 9413 | { |
| 9414 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 9415 | int done, diff; |
| 9416 | |
| 9417 | GCPRO3 (fkey.map, keytran.map, delayed_switch_frame); |
| 9418 | done = keyremap_step (keybuf, bufsize, &keytran, max (t, mock_input), |
| 9419 | 1, &diff, prompt); |
| 9420 | UNGCPRO; |
| 9421 | if (done) |
| 9422 | { |
| 9423 | mock_input = diff + max (t, mock_input); |
| 9424 | /* Adjust the function-key-map counters. */ |
| 9425 | fkey.end += diff; |
| 9426 | fkey.start += diff; |
| 9427 | |
| 9428 | goto replay_sequence; |
| 9429 | } |
| 9430 | } |
| 9431 | |
| 9432 | /* If KEY is not defined in any of the keymaps, |
| 9433 | and cannot be part of a function key or translation, |
| 9434 | and is an upper case letter |
| 9435 | use the corresponding lower-case letter instead. */ |
| 9436 | if (first_binding >= nmaps |
| 9437 | && fkey.start >= t && keytran.start >= t |
| 9438 | && INTEGERP (key) |
| 9439 | && ((((XINT (key) & 0x3ffff) |
| 9440 | < XCHAR_TABLE (current_buffer->downcase_table)->size) |
| 9441 | && UPPERCASEP (XINT (key) & 0x3ffff)) |
| 9442 | || (XINT (key) & shift_modifier))) |
| 9443 | { |
| 9444 | Lisp_Object new_key; |
| 9445 | |
| 9446 | original_uppercase = key; |
| 9447 | original_uppercase_position = t - 1; |
| 9448 | |
| 9449 | if (XINT (key) & shift_modifier) |
| 9450 | XSETINT (new_key, XINT (key) & ~shift_modifier); |
| 9451 | else |
| 9452 | XSETINT (new_key, (DOWNCASE (XINT (key) & 0x3ffff) |
| 9453 | | (XINT (key) & ~0x3ffff))); |
| 9454 | |
| 9455 | /* We have to do this unconditionally, regardless of whether |
| 9456 | the lower-case char is defined in the keymaps, because they |
| 9457 | might get translated through function-key-map. */ |
| 9458 | keybuf[t - 1] = new_key; |
| 9459 | mock_input = max (t, mock_input); |
| 9460 | |
| 9461 | goto replay_sequence; |
| 9462 | } |
| 9463 | /* If KEY is not defined in any of the keymaps, |
| 9464 | and cannot be part of a function key or translation, |
| 9465 | and is a shifted function key, |
| 9466 | use the corresponding unshifted function key instead. */ |
| 9467 | if (first_binding >= nmaps |
| 9468 | && fkey.start >= t && keytran.start >= t |
| 9469 | && SYMBOLP (key)) |
| 9470 | { |
| 9471 | Lisp_Object breakdown; |
| 9472 | int modifiers; |
| 9473 | |
| 9474 | breakdown = parse_modifiers (key); |
| 9475 | modifiers = XINT (XCAR (XCDR (breakdown))); |
| 9476 | if (modifiers & shift_modifier) |
| 9477 | { |
| 9478 | Lisp_Object new_key; |
| 9479 | |
| 9480 | original_uppercase = key; |
| 9481 | original_uppercase_position = t - 1; |
| 9482 | |
| 9483 | modifiers &= ~shift_modifier; |
| 9484 | new_key = apply_modifiers (modifiers, |
| 9485 | XCAR (breakdown)); |
| 9486 | |
| 9487 | keybuf[t - 1] = new_key; |
| 9488 | mock_input = max (t, mock_input); |
| 9489 | fkey.start = fkey.end = KEYMAPP (fkey.map) ? 0 : bufsize + 1; |
| 9490 | keytran.start = keytran.end = KEYMAPP (keytran.map) ? 0 : bufsize + 1; |
| 9491 | |
| 9492 | goto replay_sequence; |
| 9493 | } |
| 9494 | } |
| 9495 | } |
| 9496 | |
| 9497 | if (!dummyflag) |
| 9498 | read_key_sequence_cmd = (first_binding < nmaps |
| 9499 | ? defs[first_binding] |
| 9500 | : Qnil); |
| 9501 | |
| 9502 | unread_switch_frame = delayed_switch_frame; |
| 9503 | unbind_to (count, Qnil); |
| 9504 | |
| 9505 | /* Don't downcase the last character if the caller says don't. |
| 9506 | Don't downcase it if the result is undefined, either. */ |
| 9507 | if ((dont_downcase_last || first_binding >= nmaps) |
| 9508 | && t > 0 |
| 9509 | && t - 1 == original_uppercase_position) |
| 9510 | keybuf[t - 1] = original_uppercase; |
| 9511 | |
| 9512 | /* Occasionally we fabricate events, perhaps by expanding something |
| 9513 | according to function-key-map, or by adding a prefix symbol to a |
| 9514 | mouse click in the scroll bar or modeline. In this cases, return |
| 9515 | the entire generated key sequence, even if we hit an unbound |
| 9516 | prefix or a definition before the end. This means that you will |
| 9517 | be able to push back the event properly, and also means that |
| 9518 | read-key-sequence will always return a logical unit. |
| 9519 | |
| 9520 | Better ideas? */ |
| 9521 | for (; t < mock_input; t++) |
| 9522 | { |
| 9523 | if ((FLOATP (Vecho_keystrokes) || INTEGERP (Vecho_keystrokes)) |
| 9524 | && NILP (Fzerop (Vecho_keystrokes))) |
| 9525 | echo_char (keybuf[t]); |
| 9526 | add_command_key (keybuf[t]); |
| 9527 | } |
| 9528 | |
| 9529 | |
| 9530 | |
| 9531 | UNGCPRO; |
| 9532 | return t; |
| 9533 | } |
| 9534 | |
| 9535 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 5, 0, |
| 9536 | doc: /* Read a sequence of keystrokes and return as a string or vector. |
| 9537 | The sequence is sufficient to specify a non-prefix command in the |
| 9538 | current local and global maps. |
| 9539 | |
| 9540 | First arg PROMPT is a prompt string. If nil, do not prompt specially. |
| 9541 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos |
| 9542 | as a continuation of the previous key. |
| 9543 | |
| 9544 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not |
| 9545 | convert the last event to lower case. (Normally any upper case event |
| 9546 | is converted to lower case if the original event is undefined and the lower |
| 9547 | case equivalent is defined.) A non-nil value is appropriate for reading |
| 9548 | a key sequence to be defined. |
| 9549 | |
| 9550 | A C-g typed while in this function is treated like any other character, |
| 9551 | and `quit-flag' is not set. |
| 9552 | |
| 9553 | If the key sequence starts with a mouse click, then the sequence is read |
| 9554 | using the keymaps of the buffer of the window clicked in, not the buffer |
| 9555 | of the selected window as normal. |
| 9556 | |
| 9557 | `read-key-sequence' drops unbound button-down events, since you normally |
| 9558 | only care about the click or drag events which follow them. If a drag |
| 9559 | or multi-click event is unbound, but the corresponding click event would |
| 9560 | be bound, `read-key-sequence' turns the event into a click event at the |
| 9561 | drag's starting position. This means that you don't have to distinguish |
| 9562 | between click and drag, double, or triple events unless you want to. |
| 9563 | |
| 9564 | `read-key-sequence' prefixes mouse events on mode lines, the vertical |
| 9565 | lines separating windows, and scroll bars with imaginary keys |
| 9566 | `mode-line', `vertical-line', and `vertical-scroll-bar'. |
| 9567 | |
| 9568 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this |
| 9569 | function will process a switch-frame event if the user switches frames |
| 9570 | before typing anything. If the user switches frames in the middle of a |
| 9571 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME |
| 9572 | is nil, then the event will be put off until after the current key sequence. |
| 9573 | |
| 9574 | `read-key-sequence' checks `function-key-map' for function key |
| 9575 | sequences, where they wouldn't conflict with ordinary bindings. See |
| 9576 | `function-key-map' for more details. |
| 9577 | |
| 9578 | The optional fifth argument COMMAND-LOOP, if non-nil, means |
| 9579 | that this key sequence is being read by something that will |
| 9580 | read commands one after another. It should be nil if the caller |
| 9581 | will read just one key sequence. */) |
| 9582 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame, |
| 9583 | command_loop) |
| 9584 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
| 9585 | Lisp_Object can_return_switch_frame, command_loop; |
| 9586 | { |
| 9587 | Lisp_Object keybuf[30]; |
| 9588 | register int i; |
| 9589 | struct gcpro gcpro1; |
| 9590 | int count = SPECPDL_INDEX (); |
| 9591 | |
| 9592 | if (!NILP (prompt)) |
| 9593 | CHECK_STRING (prompt); |
| 9594 | QUIT; |
| 9595 | |
| 9596 | specbind (Qinput_method_exit_on_first_char, |
| 9597 | (NILP (command_loop) ? Qt : Qnil)); |
| 9598 | specbind (Qinput_method_use_echo_area, |
| 9599 | (NILP (command_loop) ? Qt : Qnil)); |
| 9600 | |
| 9601 | bzero (keybuf, sizeof keybuf); |
| 9602 | GCPRO1 (keybuf[0]); |
| 9603 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); |
| 9604 | |
| 9605 | if (NILP (continue_echo)) |
| 9606 | { |
| 9607 | this_command_key_count = 0; |
| 9608 | this_command_key_count_reset = 0; |
| 9609 | this_single_command_key_start = 0; |
| 9610 | } |
| 9611 | |
| 9612 | #ifdef HAVE_X_WINDOWS |
| 9613 | if (display_hourglass_p) |
| 9614 | cancel_hourglass (); |
| 9615 | #endif |
| 9616 | |
| 9617 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
| 9618 | prompt, ! NILP (dont_downcase_last), |
| 9619 | ! NILP (can_return_switch_frame), 0); |
| 9620 | |
| 9621 | #if 0 /* The following is fine for code reading a key sequence and |
| 9622 | then proceeding with a lenghty computation, but it's not good |
| 9623 | for code reading keys in a loop, like an input method. */ |
| 9624 | #ifdef HAVE_X_WINDOWS |
| 9625 | if (display_hourglass_p) |
| 9626 | start_hourglass (); |
| 9627 | #endif |
| 9628 | #endif |
| 9629 | |
| 9630 | if (i == -1) |
| 9631 | { |
| 9632 | Vquit_flag = Qt; |
| 9633 | QUIT; |
| 9634 | } |
| 9635 | UNGCPRO; |
| 9636 | return unbind_to (count, make_event_array (i, keybuf)); |
| 9637 | } |
| 9638 | |
| 9639 | DEFUN ("read-key-sequence-vector", Fread_key_sequence_vector, |
| 9640 | Sread_key_sequence_vector, 1, 5, 0, |
| 9641 | doc: /* Like `read-key-sequence' but always return a vector. */) |
| 9642 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame, |
| 9643 | command_loop) |
| 9644 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
| 9645 | Lisp_Object can_return_switch_frame, command_loop; |
| 9646 | { |
| 9647 | Lisp_Object keybuf[30]; |
| 9648 | register int i; |
| 9649 | struct gcpro gcpro1; |
| 9650 | int count = SPECPDL_INDEX (); |
| 9651 | |
| 9652 | if (!NILP (prompt)) |
| 9653 | CHECK_STRING (prompt); |
| 9654 | QUIT; |
| 9655 | |
| 9656 | specbind (Qinput_method_exit_on_first_char, |
| 9657 | (NILP (command_loop) ? Qt : Qnil)); |
| 9658 | specbind (Qinput_method_use_echo_area, |
| 9659 | (NILP (command_loop) ? Qt : Qnil)); |
| 9660 | |
| 9661 | bzero (keybuf, sizeof keybuf); |
| 9662 | GCPRO1 (keybuf[0]); |
| 9663 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); |
| 9664 | |
| 9665 | if (NILP (continue_echo)) |
| 9666 | { |
| 9667 | this_command_key_count = 0; |
| 9668 | this_command_key_count_reset = 0; |
| 9669 | this_single_command_key_start = 0; |
| 9670 | } |
| 9671 | |
| 9672 | #ifdef HAVE_X_WINDOWS |
| 9673 | if (display_hourglass_p) |
| 9674 | cancel_hourglass (); |
| 9675 | #endif |
| 9676 | |
| 9677 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
| 9678 | prompt, ! NILP (dont_downcase_last), |
| 9679 | ! NILP (can_return_switch_frame), 0); |
| 9680 | |
| 9681 | #ifdef HAVE_X_WINDOWS |
| 9682 | if (display_hourglass_p) |
| 9683 | start_hourglass (); |
| 9684 | #endif |
| 9685 | |
| 9686 | if (i == -1) |
| 9687 | { |
| 9688 | Vquit_flag = Qt; |
| 9689 | QUIT; |
| 9690 | } |
| 9691 | UNGCPRO; |
| 9692 | return unbind_to (count, Fvector (i, keybuf)); |
| 9693 | } |
| 9694 | \f |
| 9695 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 4, 0, |
| 9696 | doc: /* Execute CMD as an editor command. |
| 9697 | CMD must be a symbol that satisfies the `commandp' predicate. |
| 9698 | Optional second arg RECORD-FLAG non-nil |
| 9699 | means unconditionally put this command in `command-history'. |
| 9700 | Otherwise, that is done only if an arg is read using the minibuffer. |
| 9701 | The argument KEYS specifies the value to use instead of (this-command-keys) |
| 9702 | when reading the arguments; if it is nil, (this-command-keys) is used. |
| 9703 | The argument SPECIAL, if non-nil, means that this command is executing |
| 9704 | a special event, so ignore the prefix argument and don't clear it. */) |
| 9705 | (cmd, record_flag, keys, special) |
| 9706 | Lisp_Object cmd, record_flag, keys, special; |
| 9707 | { |
| 9708 | register Lisp_Object final; |
| 9709 | register Lisp_Object tem; |
| 9710 | Lisp_Object prefixarg; |
| 9711 | struct backtrace backtrace; |
| 9712 | extern int debug_on_next_call; |
| 9713 | |
| 9714 | debug_on_next_call = 0; |
| 9715 | |
| 9716 | if (NILP (special)) |
| 9717 | { |
| 9718 | prefixarg = current_kboard->Vprefix_arg; |
| 9719 | Vcurrent_prefix_arg = prefixarg; |
| 9720 | current_kboard->Vprefix_arg = Qnil; |
| 9721 | } |
| 9722 | else |
| 9723 | prefixarg = Qnil; |
| 9724 | |
| 9725 | if (SYMBOLP (cmd)) |
| 9726 | { |
| 9727 | tem = Fget (cmd, Qdisabled); |
| 9728 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
| 9729 | { |
| 9730 | tem = Fsymbol_value (Qdisabled_command_function); |
| 9731 | if (!NILP (tem)) |
| 9732 | return call1 (Vrun_hooks, Qdisabled_command_function); |
| 9733 | } |
| 9734 | } |
| 9735 | |
| 9736 | while (1) |
| 9737 | { |
| 9738 | final = Findirect_function (cmd, Qnil); |
| 9739 | |
| 9740 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) |
| 9741 | { |
| 9742 | struct gcpro gcpro1, gcpro2; |
| 9743 | |
| 9744 | GCPRO2 (cmd, prefixarg); |
| 9745 | do_autoload (final, cmd); |
| 9746 | UNGCPRO; |
| 9747 | } |
| 9748 | else |
| 9749 | break; |
| 9750 | } |
| 9751 | |
| 9752 | if (STRINGP (final) || VECTORP (final)) |
| 9753 | { |
| 9754 | /* If requested, place the macro in the command history. For |
| 9755 | other sorts of commands, call-interactively takes care of |
| 9756 | this. */ |
| 9757 | if (!NILP (record_flag)) |
| 9758 | { |
| 9759 | Vcommand_history |
| 9760 | = Fcons (Fcons (Qexecute_kbd_macro, |
| 9761 | Fcons (final, Fcons (prefixarg, Qnil))), |
| 9762 | Vcommand_history); |
| 9763 | |
| 9764 | /* Don't keep command history around forever. */ |
| 9765 | if (NUMBERP (Vhistory_length) && XINT (Vhistory_length) > 0) |
| 9766 | { |
| 9767 | tem = Fnthcdr (Vhistory_length, Vcommand_history); |
| 9768 | if (CONSP (tem)) |
| 9769 | XSETCDR (tem, Qnil); |
| 9770 | } |
| 9771 | } |
| 9772 | |
| 9773 | return Fexecute_kbd_macro (final, prefixarg, Qnil); |
| 9774 | } |
| 9775 | |
| 9776 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
| 9777 | { |
| 9778 | backtrace.next = backtrace_list; |
| 9779 | backtrace_list = &backtrace; |
| 9780 | backtrace.function = &Qcall_interactively; |
| 9781 | backtrace.args = &cmd; |
| 9782 | backtrace.nargs = 1; |
| 9783 | backtrace.evalargs = 0; |
| 9784 | backtrace.debug_on_exit = 0; |
| 9785 | |
| 9786 | tem = Fcall_interactively (cmd, record_flag, keys); |
| 9787 | |
| 9788 | backtrace_list = backtrace.next; |
| 9789 | return tem; |
| 9790 | } |
| 9791 | return Qnil; |
| 9792 | } |
| 9793 | |
| 9794 | |
| 9795 | \f |
| 9796 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
| 9797 | 1, 1, "P", |
| 9798 | doc: /* Read function name, then read its arguments and call it. |
| 9799 | |
| 9800 | To pass a numeric argument to the command you are invoking with, specify |
| 9801 | the numeric argument to this command. |
| 9802 | |
| 9803 | Noninteractively, the argument PREFIXARG is the prefix argument to |
| 9804 | give to the command you invoke, if it asks for an argument. */) |
| 9805 | (prefixarg) |
| 9806 | Lisp_Object prefixarg; |
| 9807 | { |
| 9808 | Lisp_Object function; |
| 9809 | char buf[40]; |
| 9810 | int saved_last_point_position; |
| 9811 | Lisp_Object saved_keys, saved_last_point_position_buffer; |
| 9812 | Lisp_Object bindings, value; |
| 9813 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 9814 | #ifdef HAVE_X_WINDOWS |
| 9815 | /* The call to Fcompleting_read wil start and cancel the hourglass, |
| 9816 | but if the hourglass was already scheduled, this means that no |
| 9817 | hourglass will be shown for the actual M-x command itself. |
| 9818 | So we restart it if it is already scheduled. Note that checking |
| 9819 | hourglass_shown_p is not enough, normally the hourglass is not shown, |
| 9820 | just scheduled to be shown. */ |
| 9821 | int hstarted = hourglass_started (); |
| 9822 | #endif |
| 9823 | |
| 9824 | saved_keys = Fvector (this_command_key_count, |
| 9825 | XVECTOR (this_command_keys)->contents); |
| 9826 | saved_last_point_position_buffer = last_point_position_buffer; |
| 9827 | saved_last_point_position = last_point_position; |
| 9828 | buf[0] = 0; |
| 9829 | GCPRO3 (saved_keys, prefixarg, saved_last_point_position_buffer); |
| 9830 | |
| 9831 | if (EQ (prefixarg, Qminus)) |
| 9832 | strcpy (buf, "- "); |
| 9833 | else if (CONSP (prefixarg) && XINT (XCAR (prefixarg)) == 4) |
| 9834 | strcpy (buf, "C-u "); |
| 9835 | else if (CONSP (prefixarg) && INTEGERP (XCAR (prefixarg))) |
| 9836 | sprintf (buf, "%ld ", (long) XINT (XCAR (prefixarg))); |
| 9837 | else if (INTEGERP (prefixarg)) |
| 9838 | sprintf (buf, "%ld ", (long) XINT (prefixarg)); |
| 9839 | |
| 9840 | /* This isn't strictly correct if execute-extended-command |
| 9841 | is bound to anything else. Perhaps it should use |
| 9842 | this_command_keys? */ |
| 9843 | strcat (buf, "M-x "); |
| 9844 | |
| 9845 | /* Prompt with buf, and then read a string, completing from and |
| 9846 | restricting to the set of all defined commands. Don't provide |
| 9847 | any initial input. Save the command read on the extended-command |
| 9848 | history list. */ |
| 9849 | function = Fcompleting_read (build_string (buf), |
| 9850 | Vobarray, Qcommandp, |
| 9851 | Qt, Qnil, Qextended_command_history, Qnil, |
| 9852 | Qnil); |
| 9853 | |
| 9854 | #ifdef HAVE_X_WINDOWS |
| 9855 | if (hstarted) start_hourglass (); |
| 9856 | #endif |
| 9857 | |
| 9858 | if (STRINGP (function) && SCHARS (function) == 0) |
| 9859 | error ("No command name given"); |
| 9860 | |
| 9861 | /* Set this_command_keys to the concatenation of saved_keys and |
| 9862 | function, followed by a RET. */ |
| 9863 | { |
| 9864 | Lisp_Object *keys; |
| 9865 | int i; |
| 9866 | |
| 9867 | this_command_key_count = 0; |
| 9868 | this_command_key_count_reset = 0; |
| 9869 | this_single_command_key_start = 0; |
| 9870 | |
| 9871 | keys = XVECTOR (saved_keys)->contents; |
| 9872 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) |
| 9873 | add_command_key (keys[i]); |
| 9874 | |
| 9875 | for (i = 0; i < SCHARS (function); i++) |
| 9876 | add_command_key (Faref (function, make_number (i))); |
| 9877 | |
| 9878 | add_command_key (make_number ('\015')); |
| 9879 | } |
| 9880 | |
| 9881 | last_point_position = saved_last_point_position; |
| 9882 | last_point_position_buffer = saved_last_point_position_buffer; |
| 9883 | |
| 9884 | UNGCPRO; |
| 9885 | |
| 9886 | function = Fintern (function, Qnil); |
| 9887 | current_kboard->Vprefix_arg = prefixarg; |
| 9888 | Vthis_command = function; |
| 9889 | real_this_command = function; |
| 9890 | |
| 9891 | /* If enabled, show which key runs this command. */ |
| 9892 | if (!NILP (Vsuggest_key_bindings) |
| 9893 | && NILP (Vexecuting_kbd_macro) |
| 9894 | && SYMBOLP (function)) |
| 9895 | bindings = Fwhere_is_internal (function, Voverriding_local_map, |
| 9896 | Qt, Qnil, Qnil); |
| 9897 | else |
| 9898 | bindings = Qnil; |
| 9899 | |
| 9900 | value = Qnil; |
| 9901 | GCPRO2 (bindings, value); |
| 9902 | value = Fcommand_execute (function, Qt, Qnil, Qnil); |
| 9903 | |
| 9904 | /* If the command has a key binding, print it now. */ |
| 9905 | if (!NILP (bindings) |
| 9906 | && ! (VECTORP (bindings) && EQ (Faref (bindings, make_number (0)), |
| 9907 | Qmouse_movement))) |
| 9908 | { |
| 9909 | /* But first wait, and skip the message if there is input. */ |
| 9910 | Lisp_Object waited; |
| 9911 | |
| 9912 | /* If this command displayed something in the echo area; |
| 9913 | wait a few seconds, then display our suggestion message. */ |
| 9914 | if (NILP (echo_area_buffer[0])) |
| 9915 | waited = sit_for (make_number (0), 0, 2); |
| 9916 | else if (NUMBERP (Vsuggest_key_bindings)) |
| 9917 | waited = sit_for (Vminibuffer_message_timeout, 0, 2); |
| 9918 | else |
| 9919 | waited = sit_for (make_number (2), 0, 2); |
| 9920 | |
| 9921 | if (!NILP (waited) && ! CONSP (Vunread_command_events)) |
| 9922 | { |
| 9923 | Lisp_Object binding; |
| 9924 | char *newmessage; |
| 9925 | int message_p = push_message (); |
| 9926 | int count = SPECPDL_INDEX (); |
| 9927 | |
| 9928 | record_unwind_protect (pop_message_unwind, Qnil); |
| 9929 | binding = Fkey_description (bindings, Qnil); |
| 9930 | |
| 9931 | newmessage |
| 9932 | = (char *) alloca (SCHARS (SYMBOL_NAME (function)) |
| 9933 | + SBYTES (binding) |
| 9934 | + 100); |
| 9935 | sprintf (newmessage, "You can run the command `%s' with %s", |
| 9936 | SDATA (SYMBOL_NAME (function)), |
| 9937 | SDATA (binding)); |
| 9938 | message2_nolog (newmessage, |
| 9939 | strlen (newmessage), |
| 9940 | STRING_MULTIBYTE (binding)); |
| 9941 | if (NUMBERP (Vsuggest_key_bindings)) |
| 9942 | waited = sit_for (Vsuggest_key_bindings, 0, 2); |
| 9943 | else |
| 9944 | waited = sit_for (make_number (2), 0, 2); |
| 9945 | |
| 9946 | if (!NILP (waited) && message_p) |
| 9947 | restore_message (); |
| 9948 | |
| 9949 | unbind_to (count, Qnil); |
| 9950 | } |
| 9951 | } |
| 9952 | |
| 9953 | RETURN_UNGCPRO (value); |
| 9954 | } |
| 9955 | |
| 9956 | \f |
| 9957 | /* Return nonzero if input events are pending. */ |
| 9958 | |
| 9959 | int |
| 9960 | detect_input_pending () |
| 9961 | { |
| 9962 | if (!input_pending) |
| 9963 | get_input_pending (&input_pending, 0); |
| 9964 | |
| 9965 | return input_pending; |
| 9966 | } |
| 9967 | |
| 9968 | /* Return nonzero if input events other than mouse movements are |
| 9969 | pending. */ |
| 9970 | |
| 9971 | int |
| 9972 | detect_input_pending_ignore_squeezables () |
| 9973 | { |
| 9974 | if (!input_pending) |
| 9975 | get_input_pending (&input_pending, READABLE_EVENTS_IGNORE_SQUEEZABLES); |
| 9976 | |
| 9977 | return input_pending; |
| 9978 | } |
| 9979 | |
| 9980 | /* Return nonzero if input events are pending, and run any pending timers. */ |
| 9981 | |
| 9982 | int |
| 9983 | detect_input_pending_run_timers (do_display) |
| 9984 | int do_display; |
| 9985 | { |
| 9986 | int old_timers_run = timers_run; |
| 9987 | |
| 9988 | if (!input_pending) |
| 9989 | get_input_pending (&input_pending, READABLE_EVENTS_DO_TIMERS_NOW); |
| 9990 | |
| 9991 | if (old_timers_run != timers_run && do_display) |
| 9992 | { |
| 9993 | redisplay_preserve_echo_area (8); |
| 9994 | /* The following fixes a bug when using lazy-lock with |
| 9995 | lazy-lock-defer-on-the-fly set to t, i.e. when fontifying |
| 9996 | from an idle timer function. The symptom of the bug is that |
| 9997 | the cursor sometimes doesn't become visible until the next X |
| 9998 | event is processed. --gerd. */ |
| 9999 | if (rif) |
| 10000 | rif->flush_display (NULL); |
| 10001 | } |
| 10002 | |
| 10003 | return input_pending; |
| 10004 | } |
| 10005 | |
| 10006 | /* This is called in some cases before a possible quit. |
| 10007 | It cases the next call to detect_input_pending to recompute input_pending. |
| 10008 | So calling this function unnecessarily can't do any harm. */ |
| 10009 | |
| 10010 | void |
| 10011 | clear_input_pending () |
| 10012 | { |
| 10013 | input_pending = 0; |
| 10014 | } |
| 10015 | |
| 10016 | /* Return nonzero if there are pending requeued events. |
| 10017 | This isn't used yet. The hope is to make wait_reading_process_output |
| 10018 | call it, and return if it runs Lisp code that unreads something. |
| 10019 | The problem is, kbd_buffer_get_event needs to be fixed to know what |
| 10020 | to do in that case. It isn't trivial. */ |
| 10021 | |
| 10022 | int |
| 10023 | requeued_events_pending_p () |
| 10024 | { |
| 10025 | return (!NILP (Vunread_command_events) || unread_command_char != -1); |
| 10026 | } |
| 10027 | |
| 10028 | |
| 10029 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
| 10030 | doc: /* Return t if command input is currently available with no wait. |
| 10031 | Actually, the value is nil only if we can be sure that no input is available; |
| 10032 | if there is a doubt, the value is t. */) |
| 10033 | () |
| 10034 | { |
| 10035 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
| 10036 | return (Qt); |
| 10037 | |
| 10038 | get_input_pending (&input_pending, |
| 10039 | READABLE_EVENTS_DO_TIMERS_NOW |
| 10040 | | READABLE_EVENTS_FILTER_EVENTS); |
| 10041 | return input_pending > 0 ? Qt : Qnil; |
| 10042 | } |
| 10043 | |
| 10044 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, |
| 10045 | doc: /* Return vector of last 100 events, not counting those from keyboard macros. */) |
| 10046 | () |
| 10047 | { |
| 10048 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
| 10049 | Lisp_Object val; |
| 10050 | |
| 10051 | if (total_keys < NUM_RECENT_KEYS) |
| 10052 | return Fvector (total_keys, keys); |
| 10053 | else |
| 10054 | { |
| 10055 | val = Fvector (NUM_RECENT_KEYS, keys); |
| 10056 | bcopy (keys + recent_keys_index, |
| 10057 | XVECTOR (val)->contents, |
| 10058 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); |
| 10059 | bcopy (keys, |
| 10060 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
| 10061 | recent_keys_index * sizeof (Lisp_Object)); |
| 10062 | return val; |
| 10063 | } |
| 10064 | } |
| 10065 | |
| 10066 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, |
| 10067 | doc: /* Return the key sequence that invoked this command. |
| 10068 | However, if the command has called `read-key-sequence', it returns |
| 10069 | the last key sequence that has been read. |
| 10070 | The value is a string or a vector. */) |
| 10071 | () |
| 10072 | { |
| 10073 | return make_event_array (this_command_key_count, |
| 10074 | XVECTOR (this_command_keys)->contents); |
| 10075 | } |
| 10076 | |
| 10077 | DEFUN ("this-command-keys-vector", Fthis_command_keys_vector, Sthis_command_keys_vector, 0, 0, 0, |
| 10078 | doc: /* Return the key sequence that invoked this command, as a vector. |
| 10079 | However, if the command has called `read-key-sequence', it returns |
| 10080 | the last key sequence that has been read. */) |
| 10081 | () |
| 10082 | { |
| 10083 | return Fvector (this_command_key_count, |
| 10084 | XVECTOR (this_command_keys)->contents); |
| 10085 | } |
| 10086 | |
| 10087 | DEFUN ("this-single-command-keys", Fthis_single_command_keys, |
| 10088 | Sthis_single_command_keys, 0, 0, 0, |
| 10089 | doc: /* Return the key sequence that invoked this command. |
| 10090 | More generally, it returns the last key sequence read, either by |
| 10091 | the command loop or by `read-key-sequence'. |
| 10092 | Unlike `this-command-keys', this function's value |
| 10093 | does not include prefix arguments. |
| 10094 | The value is always a vector. */) |
| 10095 | () |
| 10096 | { |
| 10097 | return Fvector (this_command_key_count |
| 10098 | - this_single_command_key_start, |
| 10099 | (XVECTOR (this_command_keys)->contents |
| 10100 | + this_single_command_key_start)); |
| 10101 | } |
| 10102 | |
| 10103 | DEFUN ("this-single-command-raw-keys", Fthis_single_command_raw_keys, |
| 10104 | Sthis_single_command_raw_keys, 0, 0, 0, |
| 10105 | doc: /* Return the raw events that were read for this command. |
| 10106 | More generally, it returns the last key sequence read, either by |
| 10107 | the command loop or by `read-key-sequence'. |
| 10108 | Unlike `this-single-command-keys', this function's value |
| 10109 | shows the events before all translations (except for input methods). |
| 10110 | The value is always a vector. */) |
| 10111 | () |
| 10112 | { |
| 10113 | return Fvector (raw_keybuf_count, |
| 10114 | (XVECTOR (raw_keybuf)->contents)); |
| 10115 | } |
| 10116 | |
| 10117 | DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, |
| 10118 | Sreset_this_command_lengths, 0, 0, 0, |
| 10119 | doc: /* Make the unread events replace the last command and echo. |
| 10120 | Used in `universal-argument-other-key'. |
| 10121 | |
| 10122 | `universal-argument-other-key' rereads the event just typed. |
| 10123 | It then gets translated through `function-key-map'. |
| 10124 | The translated event has to replace the real events, |
| 10125 | both in the value of (this-command-keys) and in echoing. |
| 10126 | To achieve this, `universal-argument-other-key' calls |
| 10127 | `reset-this-command-lengths', which discards the record of reading |
| 10128 | these events the first time. */) |
| 10129 | () |
| 10130 | { |
| 10131 | this_command_key_count = before_command_key_count; |
| 10132 | if (this_command_key_count < this_single_command_key_start) |
| 10133 | this_single_command_key_start = this_command_key_count; |
| 10134 | |
| 10135 | echo_truncate (before_command_echo_length); |
| 10136 | |
| 10137 | /* Cause whatever we put into unread-command-events |
| 10138 | to echo as if it were being freshly read from the keyboard. */ |
| 10139 | this_command_key_count_reset = 1; |
| 10140 | |
| 10141 | return Qnil; |
| 10142 | } |
| 10143 | |
| 10144 | DEFUN ("clear-this-command-keys", Fclear_this_command_keys, |
| 10145 | Sclear_this_command_keys, 0, 1, 0, |
| 10146 | doc: /* Clear out the vector that `this-command-keys' returns. |
| 10147 | Also clear the record of the last 100 events, unless optional arg |
| 10148 | KEEP-RECORD is non-nil. */) |
| 10149 | (keep_record) |
| 10150 | Lisp_Object keep_record; |
| 10151 | { |
| 10152 | int i; |
| 10153 | |
| 10154 | this_command_key_count = 0; |
| 10155 | this_command_key_count_reset = 0; |
| 10156 | |
| 10157 | if (NILP (keep_record)) |
| 10158 | { |
| 10159 | for (i = 0; i < XVECTOR (recent_keys)->size; ++i) |
| 10160 | XVECTOR (recent_keys)->contents[i] = Qnil; |
| 10161 | total_keys = 0; |
| 10162 | recent_keys_index = 0; |
| 10163 | } |
| 10164 | return Qnil; |
| 10165 | } |
| 10166 | |
| 10167 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, |
| 10168 | doc: /* Return the current depth in recursive edits. */) |
| 10169 | () |
| 10170 | { |
| 10171 | Lisp_Object temp; |
| 10172 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
| 10173 | return temp; |
| 10174 | } |
| 10175 | |
| 10176 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, |
| 10177 | "FOpen dribble file: ", |
| 10178 | doc: /* Start writing all keyboard characters to a dribble file called FILE. |
| 10179 | If FILE is nil, close any open dribble file. */) |
| 10180 | (file) |
| 10181 | Lisp_Object file; |
| 10182 | { |
| 10183 | if (dribble) |
| 10184 | { |
| 10185 | fclose (dribble); |
| 10186 | dribble = 0; |
| 10187 | } |
| 10188 | if (!NILP (file)) |
| 10189 | { |
| 10190 | file = Fexpand_file_name (file, Qnil); |
| 10191 | dribble = fopen (SDATA (file), "w"); |
| 10192 | if (dribble == 0) |
| 10193 | report_file_error ("Opening dribble", Fcons (file, Qnil)); |
| 10194 | } |
| 10195 | return Qnil; |
| 10196 | } |
| 10197 | |
| 10198 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, |
| 10199 | doc: /* Discard the contents of the terminal input buffer. |
| 10200 | Also end any kbd macro being defined. */) |
| 10201 | () |
| 10202 | { |
| 10203 | if (!NILP (current_kboard->defining_kbd_macro)) |
| 10204 | { |
| 10205 | /* Discard the last command from the macro. */ |
| 10206 | Fcancel_kbd_macro_events (); |
| 10207 | end_kbd_macro (); |
| 10208 | } |
| 10209 | |
| 10210 | update_mode_lines++; |
| 10211 | |
| 10212 | Vunread_command_events = Qnil; |
| 10213 | unread_command_char = -1; |
| 10214 | |
| 10215 | discard_tty_input (); |
| 10216 | |
| 10217 | kbd_fetch_ptr = kbd_store_ptr; |
| 10218 | input_pending = 0; |
| 10219 | |
| 10220 | return Qnil; |
| 10221 | } |
| 10222 | \f |
| 10223 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", |
| 10224 | doc: /* Stop Emacs and return to superior process. You can resume later. |
| 10225 | If `cannot-suspend' is non-nil, or if the system doesn't support job |
| 10226 | control, run a subshell instead. |
| 10227 | |
| 10228 | If optional arg STUFFSTRING is non-nil, its characters are stuffed |
| 10229 | to be read as terminal input by Emacs's parent, after suspension. |
| 10230 | |
| 10231 | Before suspending, run the normal hook `suspend-hook'. |
| 10232 | After resumption run the normal hook `suspend-resume-hook'. |
| 10233 | |
| 10234 | Some operating systems cannot stop the Emacs process and resume it later. |
| 10235 | On such systems, Emacs starts a subshell instead of suspending. */) |
| 10236 | (stuffstring) |
| 10237 | Lisp_Object stuffstring; |
| 10238 | { |
| 10239 | int count = SPECPDL_INDEX (); |
| 10240 | int old_height, old_width; |
| 10241 | int width, height; |
| 10242 | struct gcpro gcpro1; |
| 10243 | |
| 10244 | if (!NILP (stuffstring)) |
| 10245 | CHECK_STRING (stuffstring); |
| 10246 | |
| 10247 | /* Run the functions in suspend-hook. */ |
| 10248 | if (!NILP (Vrun_hooks)) |
| 10249 | call1 (Vrun_hooks, intern ("suspend-hook")); |
| 10250 | |
| 10251 | GCPRO1 (stuffstring); |
| 10252 | get_frame_size (&old_width, &old_height); |
| 10253 | reset_sys_modes (); |
| 10254 | /* sys_suspend can get an error if it tries to fork a subshell |
| 10255 | and the system resources aren't available for that. */ |
| 10256 | record_unwind_protect ((Lisp_Object (*) P_ ((Lisp_Object))) init_sys_modes, |
| 10257 | Qnil); |
| 10258 | stuff_buffered_input (stuffstring); |
| 10259 | if (cannot_suspend) |
| 10260 | sys_subshell (); |
| 10261 | else |
| 10262 | sys_suspend (); |
| 10263 | unbind_to (count, Qnil); |
| 10264 | |
| 10265 | /* Check if terminal/window size has changed. |
| 10266 | Note that this is not useful when we are running directly |
| 10267 | with a window system; but suspend should be disabled in that case. */ |
| 10268 | get_frame_size (&width, &height); |
| 10269 | if (width != old_width || height != old_height) |
| 10270 | change_frame_size (SELECTED_FRAME (), height, width, 0, 0, 0); |
| 10271 | |
| 10272 | /* Run suspend-resume-hook. */ |
| 10273 | if (!NILP (Vrun_hooks)) |
| 10274 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); |
| 10275 | |
| 10276 | UNGCPRO; |
| 10277 | return Qnil; |
| 10278 | } |
| 10279 | |
| 10280 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. |
| 10281 | Then in any case stuff anything Emacs has read ahead and not used. */ |
| 10282 | |
| 10283 | void |
| 10284 | stuff_buffered_input (stuffstring) |
| 10285 | Lisp_Object stuffstring; |
| 10286 | { |
| 10287 | #ifdef SIGTSTP /* stuff_char is defined if SIGTSTP. */ |
| 10288 | register unsigned char *p; |
| 10289 | |
| 10290 | if (STRINGP (stuffstring)) |
| 10291 | { |
| 10292 | register int count; |
| 10293 | |
| 10294 | p = SDATA (stuffstring); |
| 10295 | count = SBYTES (stuffstring); |
| 10296 | while (count-- > 0) |
| 10297 | stuff_char (*p++); |
| 10298 | stuff_char ('\n'); |
| 10299 | } |
| 10300 | |
| 10301 | /* Anything we have read ahead, put back for the shell to read. */ |
| 10302 | /* ?? What should this do when we have multiple keyboards?? |
| 10303 | Should we ignore anything that was typed in at the "wrong" kboard? |
| 10304 | |
| 10305 | rms: we should stuff everything back into the kboard |
| 10306 | it came from. */ |
| 10307 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
| 10308 | { |
| 10309 | |
| 10310 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
| 10311 | kbd_fetch_ptr = kbd_buffer; |
| 10312 | if (kbd_fetch_ptr->kind == ASCII_KEYSTROKE_EVENT) |
| 10313 | stuff_char (kbd_fetch_ptr->code); |
| 10314 | |
| 10315 | clear_event (kbd_fetch_ptr); |
| 10316 | } |
| 10317 | |
| 10318 | input_pending = 0; |
| 10319 | #endif /* SIGTSTP */ |
| 10320 | } |
| 10321 | \f |
| 10322 | void |
| 10323 | set_waiting_for_input (time_to_clear) |
| 10324 | EMACS_TIME *time_to_clear; |
| 10325 | { |
| 10326 | input_available_clear_time = time_to_clear; |
| 10327 | |
| 10328 | /* Tell interrupt_signal to throw back to read_char, */ |
| 10329 | waiting_for_input = 1; |
| 10330 | |
| 10331 | /* If interrupt_signal was called before and buffered a C-g, |
| 10332 | make it run again now, to avoid timing error. */ |
| 10333 | if (!NILP (Vquit_flag)) |
| 10334 | quit_throw_to_read_char (); |
| 10335 | } |
| 10336 | |
| 10337 | void |
| 10338 | clear_waiting_for_input () |
| 10339 | { |
| 10340 | /* Tell interrupt_signal not to throw back to read_char, */ |
| 10341 | waiting_for_input = 0; |
| 10342 | input_available_clear_time = 0; |
| 10343 | } |
| 10344 | |
| 10345 | /* This routine is called at interrupt level in response to C-g. |
| 10346 | |
| 10347 | If interrupt_input, this is the handler for SIGINT. Otherwise, it |
| 10348 | is called from kbd_buffer_store_event, in handling SIGIO or |
| 10349 | SIGTINT. |
| 10350 | |
| 10351 | If `waiting_for_input' is non zero, then unless `echoing' is |
| 10352 | nonzero, immediately throw back to read_char. |
| 10353 | |
| 10354 | Otherwise it sets the Lisp variable quit-flag not-nil. This causes |
| 10355 | eval to throw, when it gets a chance. If quit-flag is already |
| 10356 | non-nil, it stops the job right away. */ |
| 10357 | |
| 10358 | static SIGTYPE |
| 10359 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
| 10360 | int signalnum; /* some compilers complain in signal calls. */ |
| 10361 | { |
| 10362 | char c; |
| 10363 | /* Must preserve main program's value of errno. */ |
| 10364 | int old_errno = errno; |
| 10365 | struct frame *sf = SELECTED_FRAME (); |
| 10366 | |
| 10367 | #if defined (USG) && !defined (POSIX_SIGNALS) |
| 10368 | if (!read_socket_hook && NILP (Vwindow_system)) |
| 10369 | { |
| 10370 | /* USG systems forget handlers when they are used; |
| 10371 | must reestablish each time */ |
| 10372 | signal (SIGINT, interrupt_signal); |
| 10373 | signal (SIGQUIT, interrupt_signal); |
| 10374 | } |
| 10375 | #endif /* USG */ |
| 10376 | |
| 10377 | SIGNAL_THREAD_CHECK (signalnum); |
| 10378 | cancel_echoing (); |
| 10379 | |
| 10380 | if (!NILP (Vquit_flag) |
| 10381 | && (FRAME_TERMCAP_P (sf) || FRAME_MSDOS_P (sf))) |
| 10382 | { |
| 10383 | /* If SIGINT isn't blocked, don't let us be interrupted by |
| 10384 | another SIGINT, it might be harmful due to non-reentrancy |
| 10385 | in I/O functions. */ |
| 10386 | sigblock (sigmask (SIGINT)); |
| 10387 | |
| 10388 | fflush (stdout); |
| 10389 | reset_sys_modes (); |
| 10390 | |
| 10391 | #ifdef SIGTSTP /* Support possible in later USG versions */ |
| 10392 | /* |
| 10393 | * On systems which can suspend the current process and return to the original |
| 10394 | * shell, this command causes the user to end up back at the shell. |
| 10395 | * The "Auto-save" and "Abort" questions are not asked until |
| 10396 | * the user elects to return to emacs, at which point he can save the current |
| 10397 | * job and either dump core or continue. |
| 10398 | */ |
| 10399 | sys_suspend (); |
| 10400 | #else |
| 10401 | #ifdef VMS |
| 10402 | if (sys_suspend () == -1) |
| 10403 | { |
| 10404 | printf ("Not running as a subprocess;\n"); |
| 10405 | printf ("you can continue or abort.\n"); |
| 10406 | } |
| 10407 | #else /* not VMS */ |
| 10408 | /* Perhaps should really fork an inferior shell? |
| 10409 | But that would not provide any way to get back |
| 10410 | to the original shell, ever. */ |
| 10411 | printf ("No support for stopping a process on this operating system;\n"); |
| 10412 | printf ("you can continue or abort.\n"); |
| 10413 | #endif /* not VMS */ |
| 10414 | #endif /* not SIGTSTP */ |
| 10415 | #ifdef MSDOS |
| 10416 | /* We must remain inside the screen area when the internal terminal |
| 10417 | is used. Note that [Enter] is not echoed by dos. */ |
| 10418 | cursor_to (0, 0); |
| 10419 | #endif |
| 10420 | /* It doesn't work to autosave while GC is in progress; |
| 10421 | the code used for auto-saving doesn't cope with the mark bit. */ |
| 10422 | if (!gc_in_progress) |
| 10423 | { |
| 10424 | printf ("Auto-save? (y or n) "); |
| 10425 | fflush (stdout); |
| 10426 | if (((c = getchar ()) & ~040) == 'Y') |
| 10427 | { |
| 10428 | Fdo_auto_save (Qt, Qnil); |
| 10429 | #ifdef MSDOS |
| 10430 | printf ("\r\nAuto-save done"); |
| 10431 | #else /* not MSDOS */ |
| 10432 | printf ("Auto-save done\n"); |
| 10433 | #endif /* not MSDOS */ |
| 10434 | } |
| 10435 | while (c != '\n') c = getchar (); |
| 10436 | } |
| 10437 | else |
| 10438 | { |
| 10439 | /* During GC, it must be safe to reenable quitting again. */ |
| 10440 | Vinhibit_quit = Qnil; |
| 10441 | #ifdef MSDOS |
| 10442 | printf ("\r\n"); |
| 10443 | #endif /* not MSDOS */ |
| 10444 | printf ("Garbage collection in progress; cannot auto-save now\r\n"); |
| 10445 | printf ("but will instead do a real quit after garbage collection ends\r\n"); |
| 10446 | fflush (stdout); |
| 10447 | } |
| 10448 | |
| 10449 | #ifdef MSDOS |
| 10450 | printf ("\r\nAbort? (y or n) "); |
| 10451 | #else /* not MSDOS */ |
| 10452 | #ifdef VMS |
| 10453 | printf ("Abort (and enter debugger)? (y or n) "); |
| 10454 | #else /* not VMS */ |
| 10455 | printf ("Abort (and dump core)? (y or n) "); |
| 10456 | #endif /* not VMS */ |
| 10457 | #endif /* not MSDOS */ |
| 10458 | fflush (stdout); |
| 10459 | if (((c = getchar ()) & ~040) == 'Y') |
| 10460 | abort (); |
| 10461 | while (c != '\n') c = getchar (); |
| 10462 | #ifdef MSDOS |
| 10463 | printf ("\r\nContinuing...\r\n"); |
| 10464 | #else /* not MSDOS */ |
| 10465 | printf ("Continuing...\n"); |
| 10466 | #endif /* not MSDOS */ |
| 10467 | fflush (stdout); |
| 10468 | init_sys_modes (); |
| 10469 | sigfree (); |
| 10470 | } |
| 10471 | else |
| 10472 | { |
| 10473 | /* If executing a function that wants to be interrupted out of |
| 10474 | and the user has not deferred quitting by binding `inhibit-quit' |
| 10475 | then quit right away. */ |
| 10476 | if (immediate_quit && NILP (Vinhibit_quit)) |
| 10477 | { |
| 10478 | struct gl_state_s saved; |
| 10479 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 10480 | |
| 10481 | immediate_quit = 0; |
| 10482 | sigfree (); |
| 10483 | saved = gl_state; |
| 10484 | GCPRO4 (saved.object, saved.global_code, |
| 10485 | saved.current_syntax_table, saved.old_prop); |
| 10486 | Fsignal (Qquit, Qnil); |
| 10487 | gl_state = saved; |
| 10488 | UNGCPRO; |
| 10489 | } |
| 10490 | else |
| 10491 | /* Else request quit when it's safe */ |
| 10492 | Vquit_flag = Qt; |
| 10493 | } |
| 10494 | |
| 10495 | if (waiting_for_input && !echoing) |
| 10496 | quit_throw_to_read_char (); |
| 10497 | |
| 10498 | errno = old_errno; |
| 10499 | } |
| 10500 | |
| 10501 | /* Handle a C-g by making read_char return C-g. */ |
| 10502 | |
| 10503 | void |
| 10504 | quit_throw_to_read_char () |
| 10505 | { |
| 10506 | sigfree (); |
| 10507 | /* Prevent another signal from doing this before we finish. */ |
| 10508 | clear_waiting_for_input (); |
| 10509 | input_pending = 0; |
| 10510 | |
| 10511 | Vunread_command_events = Qnil; |
| 10512 | unread_command_char = -1; |
| 10513 | |
| 10514 | #if 0 /* Currently, sit_for is called from read_char without turning |
| 10515 | off polling. And that can call set_waiting_for_input. |
| 10516 | It seems to be harmless. */ |
| 10517 | #ifdef POLL_FOR_INPUT |
| 10518 | /* May be > 1 if in recursive minibuffer. */ |
| 10519 | if (poll_suppress_count == 0) |
| 10520 | abort (); |
| 10521 | #endif |
| 10522 | #endif |
| 10523 | if (FRAMEP (internal_last_event_frame) |
| 10524 | && !EQ (internal_last_event_frame, selected_frame)) |
| 10525 | do_switch_frame (make_lispy_switch_frame (internal_last_event_frame), |
| 10526 | 0, 0); |
| 10527 | |
| 10528 | _longjmp (getcjmp, 1); |
| 10529 | } |
| 10530 | \f |
| 10531 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, |
| 10532 | doc: /* Set mode of reading keyboard input. |
| 10533 | First arg INTERRUPT non-nil means use input interrupts; |
| 10534 | nil means use CBREAK mode. |
| 10535 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal |
| 10536 | (no effect except in CBREAK mode). |
| 10537 | Third arg META t means accept 8-bit input (for a Meta key). |
| 10538 | META nil means ignore the top bit, on the assumption it is parity. |
| 10539 | Otherwise, accept 8-bit input and don't use the top bit for Meta. |
| 10540 | Optional fourth arg QUIT if non-nil specifies character to use for quitting. |
| 10541 | See also `current-input-mode'. */) |
| 10542 | (interrupt, flow, meta, quit) |
| 10543 | Lisp_Object interrupt, flow, meta, quit; |
| 10544 | { |
| 10545 | if (!NILP (quit) |
| 10546 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
| 10547 | error ("set-input-mode: QUIT must be an ASCII character"); |
| 10548 | |
| 10549 | #ifdef POLL_FOR_INPUT |
| 10550 | stop_polling (); |
| 10551 | #endif |
| 10552 | |
| 10553 | #ifndef DOS_NT |
| 10554 | /* this causes startup screen to be restored and messes with the mouse */ |
| 10555 | reset_sys_modes (); |
| 10556 | #endif |
| 10557 | |
| 10558 | #ifdef SIGIO |
| 10559 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
| 10560 | if (read_socket_hook) |
| 10561 | { |
| 10562 | /* When using X, don't give the user a real choice, |
| 10563 | because we haven't implemented the mechanisms to support it. */ |
| 10564 | #ifdef NO_SOCK_SIGIO |
| 10565 | interrupt_input = 0; |
| 10566 | #else /* not NO_SOCK_SIGIO */ |
| 10567 | interrupt_input = 1; |
| 10568 | #endif /* NO_SOCK_SIGIO */ |
| 10569 | } |
| 10570 | else |
| 10571 | interrupt_input = !NILP (interrupt); |
| 10572 | #else /* not SIGIO */ |
| 10573 | interrupt_input = 0; |
| 10574 | #endif /* not SIGIO */ |
| 10575 | |
| 10576 | /* Our VMS input only works by interrupts, as of now. */ |
| 10577 | #ifdef VMS |
| 10578 | interrupt_input = 1; |
| 10579 | #endif |
| 10580 | |
| 10581 | flow_control = !NILP (flow); |
| 10582 | if (NILP (meta)) |
| 10583 | meta_key = 0; |
| 10584 | else if (EQ (meta, Qt)) |
| 10585 | meta_key = 1; |
| 10586 | else |
| 10587 | meta_key = 2; |
| 10588 | if (!NILP (quit)) |
| 10589 | /* Don't let this value be out of range. */ |
| 10590 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); |
| 10591 | |
| 10592 | #ifndef DOS_NT |
| 10593 | init_sys_modes (); |
| 10594 | #endif |
| 10595 | |
| 10596 | #ifdef POLL_FOR_INPUT |
| 10597 | poll_suppress_count = 1; |
| 10598 | start_polling (); |
| 10599 | #endif |
| 10600 | return Qnil; |
| 10601 | } |
| 10602 | |
| 10603 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, |
| 10604 | doc: /* Return information about the way Emacs currently reads keyboard input. |
| 10605 | The value is a list of the form (INTERRUPT FLOW META QUIT), where |
| 10606 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if |
| 10607 | nil, Emacs is using CBREAK mode. |
| 10608 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the |
| 10609 | terminal; this does not apply if Emacs uses interrupt-driven input. |
| 10610 | META is t if accepting 8-bit input with 8th bit as Meta flag. |
| 10611 | META nil means ignoring the top bit, on the assumption it is parity. |
| 10612 | META is neither t nor nil if accepting 8-bit input and using |
| 10613 | all 8 bits as the character code. |
| 10614 | QUIT is the character Emacs currently uses to quit. |
| 10615 | The elements of this list correspond to the arguments of |
| 10616 | `set-input-mode'. */) |
| 10617 | () |
| 10618 | { |
| 10619 | Lisp_Object val[4]; |
| 10620 | |
| 10621 | val[0] = interrupt_input ? Qt : Qnil; |
| 10622 | val[1] = flow_control ? Qt : Qnil; |
| 10623 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
| 10624 | XSETFASTINT (val[3], quit_char); |
| 10625 | |
| 10626 | return Flist (sizeof (val) / sizeof (val[0]), val); |
| 10627 | } |
| 10628 | |
| 10629 | DEFUN ("posn-at-x-y", Fposn_at_x_y, Sposn_at_x_y, 2, 4, 0, |
| 10630 | doc: /* Return position information for pixel coordinates X and Y. |
| 10631 | By default, X and Y are relative to text area of the selected window. |
| 10632 | Optional third arg FRAME-OR-WINDOW non-nil specifies frame or window. |
| 10633 | If optional fourth arg WHOLE is non-nil, X is relative to the left |
| 10634 | edge of the window. |
| 10635 | |
| 10636 | The return value is similar to a mouse click position: |
| 10637 | (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW) |
| 10638 | IMAGE (DX . DY) (WIDTH . HEIGHT)) |
| 10639 | The `posn-' functions access elements of such lists. */) |
| 10640 | (x, y, frame_or_window, whole) |
| 10641 | Lisp_Object x, y, frame_or_window, whole; |
| 10642 | { |
| 10643 | CHECK_NATNUM (x); |
| 10644 | CHECK_NATNUM (y); |
| 10645 | |
| 10646 | if (NILP (frame_or_window)) |
| 10647 | frame_or_window = selected_window; |
| 10648 | |
| 10649 | if (WINDOWP (frame_or_window)) |
| 10650 | { |
| 10651 | struct window *w; |
| 10652 | |
| 10653 | CHECK_LIVE_WINDOW (frame_or_window); |
| 10654 | |
| 10655 | w = XWINDOW (frame_or_window); |
| 10656 | XSETINT (x, (XINT (x) |
| 10657 | + WINDOW_LEFT_EDGE_X (w) |
| 10658 | + (NILP (whole) |
| 10659 | ? window_box_left_offset (w, TEXT_AREA) |
| 10660 | : 0))); |
| 10661 | XSETINT (y, WINDOW_TO_FRAME_PIXEL_Y (w, XINT (y))); |
| 10662 | frame_or_window = w->frame; |
| 10663 | } |
| 10664 | |
| 10665 | CHECK_LIVE_FRAME (frame_or_window); |
| 10666 | |
| 10667 | return make_lispy_position (XFRAME (frame_or_window), &x, &y, 0); |
| 10668 | } |
| 10669 | |
| 10670 | DEFUN ("posn-at-point", Fposn_at_point, Sposn_at_point, 0, 2, 0, |
| 10671 | doc: /* Return position information for buffer POS in WINDOW. |
| 10672 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
| 10673 | |
| 10674 | Return nil if position is not visible in window. Otherwise, |
| 10675 | the return value is similar to that returned by `event-start' for |
| 10676 | a mouse click at the upper left corner of the glyph corresponding |
| 10677 | to the given buffer position: |
| 10678 | (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW) |
| 10679 | IMAGE (DX . DY) (WIDTH . HEIGHT)) |
| 10680 | The `posn-' functions access elements of such lists. */) |
| 10681 | (pos, window) |
| 10682 | Lisp_Object pos, window; |
| 10683 | { |
| 10684 | Lisp_Object tem; |
| 10685 | |
| 10686 | if (NILP (window)) |
| 10687 | window = selected_window; |
| 10688 | |
| 10689 | tem = Fpos_visible_in_window_p (pos, window, Qt); |
| 10690 | if (!NILP (tem)) |
| 10691 | { |
| 10692 | Lisp_Object x = XCAR (tem); |
| 10693 | Lisp_Object y = XCAR (XCDR (tem)); |
| 10694 | |
| 10695 | /* Point invisible due to hscrolling? */ |
| 10696 | if (XINT (x) < 0) |
| 10697 | return Qnil; |
| 10698 | tem = Fposn_at_x_y (x, y, window, Qnil); |
| 10699 | } |
| 10700 | |
| 10701 | return tem; |
| 10702 | } |
| 10703 | |
| 10704 | \f |
| 10705 | /* |
| 10706 | * Set up a new kboard object with reasonable initial values. |
| 10707 | */ |
| 10708 | void |
| 10709 | init_kboard (kb) |
| 10710 | KBOARD *kb; |
| 10711 | { |
| 10712 | kb->Voverriding_terminal_local_map = Qnil; |
| 10713 | kb->Vlast_command = Qnil; |
| 10714 | kb->Vreal_last_command = Qnil; |
| 10715 | kb->Vprefix_arg = Qnil; |
| 10716 | kb->Vlast_prefix_arg = Qnil; |
| 10717 | kb->kbd_queue = Qnil; |
| 10718 | kb->kbd_queue_has_data = 0; |
| 10719 | kb->immediate_echo = 0; |
| 10720 | kb->echo_string = Qnil; |
| 10721 | kb->echo_after_prompt = -1; |
| 10722 | kb->kbd_macro_buffer = 0; |
| 10723 | kb->kbd_macro_bufsize = 0; |
| 10724 | kb->defining_kbd_macro = Qnil; |
| 10725 | kb->Vlast_kbd_macro = Qnil; |
| 10726 | kb->reference_count = 0; |
| 10727 | kb->Vsystem_key_alist = Qnil; |
| 10728 | kb->system_key_syms = Qnil; |
| 10729 | kb->Vdefault_minibuffer_frame = Qnil; |
| 10730 | } |
| 10731 | |
| 10732 | /* |
| 10733 | * Destroy the contents of a kboard object, but not the object itself. |
| 10734 | * We use this just before deleting it, or if we're going to initialize |
| 10735 | * it a second time. |
| 10736 | */ |
| 10737 | static void |
| 10738 | wipe_kboard (kb) |
| 10739 | KBOARD *kb; |
| 10740 | { |
| 10741 | if (kb->kbd_macro_buffer) |
| 10742 | xfree (kb->kbd_macro_buffer); |
| 10743 | } |
| 10744 | |
| 10745 | #ifdef MULTI_KBOARD |
| 10746 | |
| 10747 | /* Free KB and memory referenced from it. */ |
| 10748 | |
| 10749 | void |
| 10750 | delete_kboard (kb) |
| 10751 | KBOARD *kb; |
| 10752 | { |
| 10753 | KBOARD **kbp; |
| 10754 | |
| 10755 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) |
| 10756 | if (*kbp == NULL) |
| 10757 | abort (); |
| 10758 | *kbp = kb->next_kboard; |
| 10759 | |
| 10760 | /* Prevent a dangling reference to KB. */ |
| 10761 | if (kb == current_kboard |
| 10762 | && FRAMEP (selected_frame) |
| 10763 | && FRAME_LIVE_P (XFRAME (selected_frame))) |
| 10764 | { |
| 10765 | current_kboard = XFRAME (selected_frame)->kboard; |
| 10766 | if (current_kboard == kb) |
| 10767 | abort (); |
| 10768 | } |
| 10769 | |
| 10770 | wipe_kboard (kb); |
| 10771 | xfree (kb); |
| 10772 | } |
| 10773 | |
| 10774 | #endif /* MULTI_KBOARD */ |
| 10775 | |
| 10776 | void |
| 10777 | init_keyboard () |
| 10778 | { |
| 10779 | /* This is correct before outermost invocation of the editor loop */ |
| 10780 | command_loop_level = -1; |
| 10781 | immediate_quit = 0; |
| 10782 | quit_char = Ctl ('g'); |
| 10783 | Vunread_command_events = Qnil; |
| 10784 | unread_command_char = -1; |
| 10785 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); |
| 10786 | total_keys = 0; |
| 10787 | recent_keys_index = 0; |
| 10788 | kbd_fetch_ptr = kbd_buffer; |
| 10789 | kbd_store_ptr = kbd_buffer; |
| 10790 | #ifdef HAVE_MOUSE |
| 10791 | do_mouse_tracking = Qnil; |
| 10792 | #endif |
| 10793 | input_pending = 0; |
| 10794 | |
| 10795 | /* This means that command_loop_1 won't try to select anything the first |
| 10796 | time through. */ |
| 10797 | internal_last_event_frame = Qnil; |
| 10798 | Vlast_event_frame = internal_last_event_frame; |
| 10799 | |
| 10800 | #ifdef MULTI_KBOARD |
| 10801 | current_kboard = initial_kboard; |
| 10802 | #endif |
| 10803 | wipe_kboard (current_kboard); |
| 10804 | init_kboard (current_kboard); |
| 10805 | |
| 10806 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
| 10807 | { |
| 10808 | signal (SIGINT, interrupt_signal); |
| 10809 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
| 10810 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
| 10811 | SIGQUIT and we can't tell which one it will give us. */ |
| 10812 | signal (SIGQUIT, interrupt_signal); |
| 10813 | #endif /* HAVE_TERMIO */ |
| 10814 | } |
| 10815 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
| 10816 | #ifdef SIGIO |
| 10817 | if (!noninteractive) |
| 10818 | signal (SIGIO, input_available_signal); |
| 10819 | #endif /* SIGIO */ |
| 10820 | |
| 10821 | /* Use interrupt input by default, if it works and noninterrupt input |
| 10822 | has deficiencies. */ |
| 10823 | |
| 10824 | #ifdef INTERRUPT_INPUT |
| 10825 | interrupt_input = 1; |
| 10826 | #else |
| 10827 | interrupt_input = 0; |
| 10828 | #endif |
| 10829 | |
| 10830 | /* Our VMS input only works by interrupts, as of now. */ |
| 10831 | #ifdef VMS |
| 10832 | interrupt_input = 1; |
| 10833 | #endif |
| 10834 | |
| 10835 | sigfree (); |
| 10836 | dribble = 0; |
| 10837 | |
| 10838 | if (keyboard_init_hook) |
| 10839 | (*keyboard_init_hook) (); |
| 10840 | |
| 10841 | #ifdef POLL_FOR_INPUT |
| 10842 | poll_suppress_count = 1; |
| 10843 | start_polling (); |
| 10844 | #endif |
| 10845 | } |
| 10846 | |
| 10847 | /* This type's only use is in syms_of_keyboard, to initialize the |
| 10848 | event header symbols and put properties on them. */ |
| 10849 | struct event_head { |
| 10850 | Lisp_Object *var; |
| 10851 | char *name; |
| 10852 | Lisp_Object *kind; |
| 10853 | }; |
| 10854 | |
| 10855 | struct event_head head_table[] = { |
| 10856 | {&Qmouse_movement, "mouse-movement", &Qmouse_movement}, |
| 10857 | {&Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement}, |
| 10858 | {&Qswitch_frame, "switch-frame", &Qswitch_frame}, |
| 10859 | {&Qdelete_frame, "delete-frame", &Qdelete_frame}, |
| 10860 | {&Qiconify_frame, "iconify-frame", &Qiconify_frame}, |
| 10861 | {&Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible}, |
| 10862 | /* `select-window' should be handled just like `switch-frame' |
| 10863 | in read_key_sequence. */ |
| 10864 | {&Qselect_window, "select-window", &Qswitch_frame} |
| 10865 | }; |
| 10866 | |
| 10867 | void |
| 10868 | syms_of_keyboard () |
| 10869 | { |
| 10870 | Vpre_help_message = Qnil; |
| 10871 | staticpro (&Vpre_help_message); |
| 10872 | |
| 10873 | Vlispy_mouse_stem = build_string ("mouse"); |
| 10874 | staticpro (&Vlispy_mouse_stem); |
| 10875 | |
| 10876 | /* Tool-bars. */ |
| 10877 | QCimage = intern (":image"); |
| 10878 | staticpro (&QCimage); |
| 10879 | |
| 10880 | staticpro (&Qhelp_echo); |
| 10881 | Qhelp_echo = intern ("help-echo"); |
| 10882 | |
| 10883 | staticpro (&item_properties); |
| 10884 | item_properties = Qnil; |
| 10885 | |
| 10886 | staticpro (&tool_bar_item_properties); |
| 10887 | tool_bar_item_properties = Qnil; |
| 10888 | staticpro (&tool_bar_items_vector); |
| 10889 | tool_bar_items_vector = Qnil; |
| 10890 | |
| 10891 | staticpro (&real_this_command); |
| 10892 | real_this_command = Qnil; |
| 10893 | |
| 10894 | Qtimer_event_handler = intern ("timer-event-handler"); |
| 10895 | staticpro (&Qtimer_event_handler); |
| 10896 | |
| 10897 | Qdisabled_command_function = intern ("disabled-command-function"); |
| 10898 | staticpro (&Qdisabled_command_function); |
| 10899 | |
| 10900 | Qself_insert_command = intern ("self-insert-command"); |
| 10901 | staticpro (&Qself_insert_command); |
| 10902 | |
| 10903 | Qforward_char = intern ("forward-char"); |
| 10904 | staticpro (&Qforward_char); |
| 10905 | |
| 10906 | Qbackward_char = intern ("backward-char"); |
| 10907 | staticpro (&Qbackward_char); |
| 10908 | |
| 10909 | Qdisabled = intern ("disabled"); |
| 10910 | staticpro (&Qdisabled); |
| 10911 | |
| 10912 | Qundefined = intern ("undefined"); |
| 10913 | staticpro (&Qundefined); |
| 10914 | |
| 10915 | Qpre_command_hook = intern ("pre-command-hook"); |
| 10916 | staticpro (&Qpre_command_hook); |
| 10917 | |
| 10918 | Qpost_command_hook = intern ("post-command-hook"); |
| 10919 | staticpro (&Qpost_command_hook); |
| 10920 | |
| 10921 | Qdeferred_action_function = intern ("deferred-action-function"); |
| 10922 | staticpro (&Qdeferred_action_function); |
| 10923 | |
| 10924 | Qcommand_hook_internal = intern ("command-hook-internal"); |
| 10925 | staticpro (&Qcommand_hook_internal); |
| 10926 | |
| 10927 | Qfunction_key = intern ("function-key"); |
| 10928 | staticpro (&Qfunction_key); |
| 10929 | Qmouse_click = intern ("mouse-click"); |
| 10930 | staticpro (&Qmouse_click); |
| 10931 | #if defined (WINDOWSNT) || defined (MAC_OS) |
| 10932 | Qlanguage_change = intern ("language-change"); |
| 10933 | staticpro (&Qlanguage_change); |
| 10934 | #endif |
| 10935 | Qdrag_n_drop = intern ("drag-n-drop"); |
| 10936 | staticpro (&Qdrag_n_drop); |
| 10937 | |
| 10938 | Qsave_session = intern ("save-session"); |
| 10939 | staticpro (&Qsave_session); |
| 10940 | |
| 10941 | #ifdef MAC_OS |
| 10942 | Qmac_apple_event = intern ("mac-apple-event"); |
| 10943 | staticpro (&Qmac_apple_event); |
| 10944 | #endif |
| 10945 | |
| 10946 | Qusr1_signal = intern ("usr1-signal"); |
| 10947 | staticpro (&Qusr1_signal); |
| 10948 | Qusr2_signal = intern ("usr2-signal"); |
| 10949 | staticpro (&Qusr2_signal); |
| 10950 | |
| 10951 | Qmenu_enable = intern ("menu-enable"); |
| 10952 | staticpro (&Qmenu_enable); |
| 10953 | Qmenu_alias = intern ("menu-alias"); |
| 10954 | staticpro (&Qmenu_alias); |
| 10955 | QCenable = intern (":enable"); |
| 10956 | staticpro (&QCenable); |
| 10957 | QCvisible = intern (":visible"); |
| 10958 | staticpro (&QCvisible); |
| 10959 | QChelp = intern (":help"); |
| 10960 | staticpro (&QChelp); |
| 10961 | QCfilter = intern (":filter"); |
| 10962 | staticpro (&QCfilter); |
| 10963 | QCbutton = intern (":button"); |
| 10964 | staticpro (&QCbutton); |
| 10965 | QCkeys = intern (":keys"); |
| 10966 | staticpro (&QCkeys); |
| 10967 | QCkey_sequence = intern (":key-sequence"); |
| 10968 | staticpro (&QCkey_sequence); |
| 10969 | QCtoggle = intern (":toggle"); |
| 10970 | staticpro (&QCtoggle); |
| 10971 | QCradio = intern (":radio"); |
| 10972 | staticpro (&QCradio); |
| 10973 | |
| 10974 | Qmode_line = intern ("mode-line"); |
| 10975 | staticpro (&Qmode_line); |
| 10976 | Qvertical_line = intern ("vertical-line"); |
| 10977 | staticpro (&Qvertical_line); |
| 10978 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
| 10979 | staticpro (&Qvertical_scroll_bar); |
| 10980 | Qmenu_bar = intern ("menu-bar"); |
| 10981 | staticpro (&Qmenu_bar); |
| 10982 | |
| 10983 | #ifdef HAVE_MOUSE |
| 10984 | Qmouse_fixup_help_message = intern ("mouse-fixup-help-message"); |
| 10985 | staticpro (&Qmouse_fixup_help_message); |
| 10986 | #endif |
| 10987 | |
| 10988 | Qabove_handle = intern ("above-handle"); |
| 10989 | staticpro (&Qabove_handle); |
| 10990 | Qhandle = intern ("handle"); |
| 10991 | staticpro (&Qhandle); |
| 10992 | Qbelow_handle = intern ("below-handle"); |
| 10993 | staticpro (&Qbelow_handle); |
| 10994 | Qup = intern ("up"); |
| 10995 | staticpro (&Qup); |
| 10996 | Qdown = intern ("down"); |
| 10997 | staticpro (&Qdown); |
| 10998 | Qtop = intern ("top"); |
| 10999 | staticpro (&Qtop); |
| 11000 | Qbottom = intern ("bottom"); |
| 11001 | staticpro (&Qbottom); |
| 11002 | Qend_scroll = intern ("end-scroll"); |
| 11003 | staticpro (&Qend_scroll); |
| 11004 | Qratio = intern ("ratio"); |
| 11005 | staticpro (&Qratio); |
| 11006 | |
| 11007 | Qevent_kind = intern ("event-kind"); |
| 11008 | staticpro (&Qevent_kind); |
| 11009 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
| 11010 | staticpro (&Qevent_symbol_elements); |
| 11011 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
| 11012 | staticpro (&Qevent_symbol_element_mask); |
| 11013 | Qmodifier_cache = intern ("modifier-cache"); |
| 11014 | staticpro (&Qmodifier_cache); |
| 11015 | |
| 11016 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
| 11017 | staticpro (&Qrecompute_lucid_menubar); |
| 11018 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); |
| 11019 | staticpro (&Qactivate_menubar_hook); |
| 11020 | |
| 11021 | Qpolling_period = intern ("polling-period"); |
| 11022 | staticpro (&Qpolling_period); |
| 11023 | |
| 11024 | Qinput_method_function = intern ("input-method-function"); |
| 11025 | staticpro (&Qinput_method_function); |
| 11026 | |
| 11027 | Qinput_method_exit_on_first_char = intern ("input-method-exit-on-first-char"); |
| 11028 | staticpro (&Qinput_method_exit_on_first_char); |
| 11029 | Qinput_method_use_echo_area = intern ("input-method-use-echo-area"); |
| 11030 | staticpro (&Qinput_method_use_echo_area); |
| 11031 | |
| 11032 | Fset (Qinput_method_exit_on_first_char, Qnil); |
| 11033 | Fset (Qinput_method_use_echo_area, Qnil); |
| 11034 | |
| 11035 | last_point_position_buffer = Qnil; |
| 11036 | last_point_position_window = Qnil; |
| 11037 | |
| 11038 | { |
| 11039 | struct event_head *p; |
| 11040 | |
| 11041 | for (p = head_table; |
| 11042 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); |
| 11043 | p++) |
| 11044 | { |
| 11045 | *p->var = intern (p->name); |
| 11046 | staticpro (p->var); |
| 11047 | Fput (*p->var, Qevent_kind, *p->kind); |
| 11048 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
| 11049 | } |
| 11050 | } |
| 11051 | |
| 11052 | button_down_location = Fmake_vector (make_number (1), Qnil); |
| 11053 | staticpro (&button_down_location); |
| 11054 | mouse_syms = Fmake_vector (make_number (1), Qnil); |
| 11055 | staticpro (&mouse_syms); |
| 11056 | wheel_syms = Fmake_vector (make_number (2), Qnil); |
| 11057 | staticpro (&wheel_syms); |
| 11058 | |
| 11059 | { |
| 11060 | int i; |
| 11061 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); |
| 11062 | |
| 11063 | modifier_symbols = Fmake_vector (make_number (len), Qnil); |
| 11064 | for (i = 0; i < len; i++) |
| 11065 | if (modifier_names[i]) |
| 11066 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); |
| 11067 | staticpro (&modifier_symbols); |
| 11068 | } |
| 11069 | |
| 11070 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
| 11071 | staticpro (&recent_keys); |
| 11072 | |
| 11073 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
| 11074 | staticpro (&this_command_keys); |
| 11075 | |
| 11076 | raw_keybuf = Fmake_vector (make_number (30), Qnil); |
| 11077 | staticpro (&raw_keybuf); |
| 11078 | |
| 11079 | Qextended_command_history = intern ("extended-command-history"); |
| 11080 | Fset (Qextended_command_history, Qnil); |
| 11081 | staticpro (&Qextended_command_history); |
| 11082 | |
| 11083 | accent_key_syms = Qnil; |
| 11084 | staticpro (&accent_key_syms); |
| 11085 | |
| 11086 | func_key_syms = Qnil; |
| 11087 | staticpro (&func_key_syms); |
| 11088 | |
| 11089 | drag_n_drop_syms = Qnil; |
| 11090 | staticpro (&drag_n_drop_syms); |
| 11091 | |
| 11092 | unread_switch_frame = Qnil; |
| 11093 | staticpro (&unread_switch_frame); |
| 11094 | |
| 11095 | internal_last_event_frame = Qnil; |
| 11096 | staticpro (&internal_last_event_frame); |
| 11097 | |
| 11098 | read_key_sequence_cmd = Qnil; |
| 11099 | staticpro (&read_key_sequence_cmd); |
| 11100 | |
| 11101 | menu_bar_one_keymap_changed_items = Qnil; |
| 11102 | staticpro (&menu_bar_one_keymap_changed_items); |
| 11103 | |
| 11104 | menu_bar_items_vector = Qnil; |
| 11105 | staticpro (&menu_bar_items_vector); |
| 11106 | |
| 11107 | defsubr (&Sevent_convert_list); |
| 11108 | defsubr (&Sread_key_sequence); |
| 11109 | defsubr (&Sread_key_sequence_vector); |
| 11110 | defsubr (&Srecursive_edit); |
| 11111 | #ifdef HAVE_MOUSE |
| 11112 | defsubr (&Strack_mouse); |
| 11113 | #endif |
| 11114 | defsubr (&Sinput_pending_p); |
| 11115 | defsubr (&Scommand_execute); |
| 11116 | defsubr (&Srecent_keys); |
| 11117 | defsubr (&Sthis_command_keys); |
| 11118 | defsubr (&Sthis_command_keys_vector); |
| 11119 | defsubr (&Sthis_single_command_keys); |
| 11120 | defsubr (&Sthis_single_command_raw_keys); |
| 11121 | defsubr (&Sreset_this_command_lengths); |
| 11122 | defsubr (&Sclear_this_command_keys); |
| 11123 | defsubr (&Ssuspend_emacs); |
| 11124 | defsubr (&Sabort_recursive_edit); |
| 11125 | defsubr (&Sexit_recursive_edit); |
| 11126 | defsubr (&Srecursion_depth); |
| 11127 | defsubr (&Stop_level); |
| 11128 | defsubr (&Sdiscard_input); |
| 11129 | defsubr (&Sopen_dribble_file); |
| 11130 | defsubr (&Sset_input_mode); |
| 11131 | defsubr (&Scurrent_input_mode); |
| 11132 | defsubr (&Sexecute_extended_command); |
| 11133 | defsubr (&Sposn_at_point); |
| 11134 | defsubr (&Sposn_at_x_y); |
| 11135 | |
| 11136 | DEFVAR_LISP ("last-command-char", &last_command_char, |
| 11137 | doc: /* Last input event that was part of a command. */); |
| 11138 | |
| 11139 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
| 11140 | doc: /* Last input event that was part of a command. */); |
| 11141 | |
| 11142 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
| 11143 | doc: /* Last input event in a command, except for mouse menu events. |
| 11144 | Mouse menus give back keys that don't look like mouse events; |
| 11145 | this variable holds the actual mouse event that led to the menu, |
| 11146 | so that you can determine whether the command was run by mouse or not. */); |
| 11147 | |
| 11148 | DEFVAR_LISP ("last-input-char", &last_input_char, |
| 11149 | doc: /* Last input event. */); |
| 11150 | |
| 11151 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
| 11152 | doc: /* Last input event. */); |
| 11153 | |
| 11154 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
| 11155 | doc: /* List of events to be read as the command input. |
| 11156 | These events are processed first, before actual keyboard input. */); |
| 11157 | Vunread_command_events = Qnil; |
| 11158 | |
| 11159 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
| 11160 | doc: /* If not -1, an object to be read as next command input event. */); |
| 11161 | |
| 11162 | DEFVAR_LISP ("unread-post-input-method-events", &Vunread_post_input_method_events, |
| 11163 | doc: /* List of events to be processed as input by input methods. |
| 11164 | These events are processed after `unread-command-events', but |
| 11165 | before actual keyboard input. */); |
| 11166 | Vunread_post_input_method_events = Qnil; |
| 11167 | |
| 11168 | DEFVAR_LISP ("unread-input-method-events", &Vunread_input_method_events, |
| 11169 | doc: /* List of events to be processed as input by input methods. |
| 11170 | These events are processed after `unread-command-events', but |
| 11171 | before actual keyboard input. */); |
| 11172 | Vunread_input_method_events = Qnil; |
| 11173 | |
| 11174 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
| 11175 | doc: /* Meta-prefix character code. |
| 11176 | Meta-foo as command input turns into this character followed by foo. */); |
| 11177 | XSETINT (meta_prefix_char, 033); |
| 11178 | |
| 11179 | DEFVAR_KBOARD ("last-command", Vlast_command, |
| 11180 | doc: /* The last command executed. |
| 11181 | Normally a symbol with a function definition, but can be whatever was found |
| 11182 | in the keymap, or whatever the variable `this-command' was set to by that |
| 11183 | command. |
| 11184 | |
| 11185 | The value `mode-exit' is special; it means that the previous command |
| 11186 | read an event that told it to exit, and it did so and unread that event. |
| 11187 | In other words, the present command is the event that made the previous |
| 11188 | command exit. |
| 11189 | |
| 11190 | The value `kill-region' is special; it means that the previous command |
| 11191 | was a kill command. */); |
| 11192 | |
| 11193 | DEFVAR_KBOARD ("real-last-command", Vreal_last_command, |
| 11194 | doc: /* Same as `last-command', but never altered by Lisp code. */); |
| 11195 | |
| 11196 | DEFVAR_LISP ("this-command", &Vthis_command, |
| 11197 | doc: /* The command now being executed. |
| 11198 | The command can set this variable; whatever is put here |
| 11199 | will be in `last-command' during the following command. */); |
| 11200 | Vthis_command = Qnil; |
| 11201 | |
| 11202 | DEFVAR_LISP ("this-original-command", &Vthis_original_command, |
| 11203 | doc: /* The command bound to the current key sequence before remapping. |
| 11204 | It equals `this-command' if the original command was not remapped through |
| 11205 | any of the active keymaps. Otherwise, the value of `this-command' is the |
| 11206 | result of looking up the original command in the active keymaps. */); |
| 11207 | Vthis_original_command = Qnil; |
| 11208 | |
| 11209 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, |
| 11210 | doc: /* *Number of input events between auto-saves. |
| 11211 | Zero means disable autosaving due to number of characters typed. */); |
| 11212 | auto_save_interval = 300; |
| 11213 | |
| 11214 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, |
| 11215 | doc: /* *Number of seconds idle time before auto-save. |
| 11216 | Zero or nil means disable auto-saving due to idleness. |
| 11217 | After auto-saving due to this many seconds of idle time, |
| 11218 | Emacs also does a garbage collection if that seems to be warranted. */); |
| 11219 | XSETFASTINT (Vauto_save_timeout, 30); |
| 11220 | |
| 11221 | DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes, |
| 11222 | doc: /* *Nonzero means echo unfinished commands after this many seconds of pause. |
| 11223 | The value may be integer or floating point. */); |
| 11224 | Vecho_keystrokes = make_number (1); |
| 11225 | |
| 11226 | DEFVAR_INT ("polling-period", &polling_period, |
| 11227 | doc: /* *Interval between polling for input during Lisp execution. |
| 11228 | The reason for polling is to make C-g work to stop a running program. |
| 11229 | Polling is needed only when using X windows and SIGIO does not work. |
| 11230 | Polling is automatically disabled in all other cases. */); |
| 11231 | polling_period = 2; |
| 11232 | |
| 11233 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
| 11234 | doc: /* *Maximum time between mouse clicks to make a double-click. |
| 11235 | Measured in milliseconds. nil means disable double-click recognition; |
| 11236 | t means double-clicks have no time limit and are detected |
| 11237 | by position only. */); |
| 11238 | Vdouble_click_time = make_number (500); |
| 11239 | |
| 11240 | DEFVAR_INT ("double-click-fuzz", &double_click_fuzz, |
| 11241 | doc: /* *Maximum mouse movement between clicks to make a double-click. |
| 11242 | On window-system frames, value is the number of pixels the mouse may have |
| 11243 | moved horizontally or vertically between two clicks to make a double-click. |
| 11244 | On non window-system frames, value is interpreted in units of 1/8 characters |
| 11245 | instead of pixels. |
| 11246 | |
| 11247 | This variable is also the threshold for motion of the mouse |
| 11248 | to count as a drag. */); |
| 11249 | double_click_fuzz = 3; |
| 11250 | |
| 11251 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
| 11252 | doc: /* *Non-nil means inhibit local map menu bar menus. */); |
| 11253 | inhibit_local_menu_bar_menus = 0; |
| 11254 | |
| 11255 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
| 11256 | doc: /* Number of complete key sequences read as input so far. |
| 11257 | This includes key sequences read from keyboard macros. |
| 11258 | The number is effectively the number of interactive command invocations. */); |
| 11259 | num_input_keys = 0; |
| 11260 | |
| 11261 | DEFVAR_INT ("num-nonmacro-input-events", &num_nonmacro_input_events, |
| 11262 | doc: /* Number of input events read from the keyboard so far. |
| 11263 | This does not include events generated by keyboard macros. */); |
| 11264 | num_nonmacro_input_events = 0; |
| 11265 | |
| 11266 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
| 11267 | doc: /* The frame in which the most recently read event occurred. |
| 11268 | If the last event came from a keyboard macro, this is set to `macro'. */); |
| 11269 | Vlast_event_frame = Qnil; |
| 11270 | |
| 11271 | /* This variable is set up in sysdep.c. */ |
| 11272 | DEFVAR_LISP ("tty-erase-char", &Vtty_erase_char, |
| 11273 | doc: /* The ERASE character as set by the user with stty. */); |
| 11274 | |
| 11275 | DEFVAR_LISP ("help-char", &Vhelp_char, |
| 11276 | doc: /* Character to recognize as meaning Help. |
| 11277 | When it is read, do `(eval help-form)', and display result if it's a string. |
| 11278 | If the value of `help-form' is nil, this char can be read normally. */); |
| 11279 | XSETINT (Vhelp_char, Ctl ('H')); |
| 11280 | |
| 11281 | DEFVAR_LISP ("help-event-list", &Vhelp_event_list, |
| 11282 | doc: /* List of input events to recognize as meaning Help. |
| 11283 | These work just like the value of `help-char' (see that). */); |
| 11284 | Vhelp_event_list = Qnil; |
| 11285 | |
| 11286 | DEFVAR_LISP ("help-form", &Vhelp_form, |
| 11287 | doc: /* Form to execute when character `help-char' is read. |
| 11288 | If the form returns a string, that string is displayed. |
| 11289 | If `help-form' is nil, the help char is not recognized. */); |
| 11290 | Vhelp_form = Qnil; |
| 11291 | |
| 11292 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
| 11293 | doc: /* Command to run when `help-char' character follows a prefix key. |
| 11294 | This command is used only when there is no actual binding |
| 11295 | for that character after that prefix key. */); |
| 11296 | Vprefix_help_command = Qnil; |
| 11297 | |
| 11298 | DEFVAR_LISP ("top-level", &Vtop_level, |
| 11299 | doc: /* Form to evaluate when Emacs starts up. |
| 11300 | Useful to set before you dump a modified Emacs. */); |
| 11301 | Vtop_level = Qnil; |
| 11302 | |
| 11303 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, |
| 11304 | doc: /* Translate table for keyboard input, or nil. |
| 11305 | If non-nil, the value should be a char-table. Each character read |
| 11306 | from the keyboard is looked up in this char-table. If the value found |
| 11307 | there is non-nil, then it is used instead of the actual input character. |
| 11308 | |
| 11309 | The value can also be a string or vector, but this is considered obsolete. |
| 11310 | If it is a string or vector of length N, character codes N and up are left |
| 11311 | untranslated. In a vector, an element which is nil means "no translation". |
| 11312 | |
| 11313 | This is applied to the characters supplied to input methods, not their |
| 11314 | output. See also `translation-table-for-input'. */); |
| 11315 | Vkeyboard_translate_table = Qnil; |
| 11316 | |
| 11317 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
| 11318 | doc: /* Non-nil means to always spawn a subshell instead of suspending. |
| 11319 | \(Even if the operating system has support for stopping a process.\) */); |
| 11320 | cannot_suspend = 0; |
| 11321 | |
| 11322 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
| 11323 | doc: /* Non-nil means prompt with menus when appropriate. |
| 11324 | This is done when reading from a keymap that has a prompt string, |
| 11325 | for elements that have prompt strings. |
| 11326 | The menu is displayed on the screen |
| 11327 | if X menus were enabled at configuration |
| 11328 | time and the previous event was a mouse click prefix key. |
| 11329 | Otherwise, menu prompting uses the echo area. */); |
| 11330 | menu_prompting = 1; |
| 11331 | |
| 11332 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, |
| 11333 | doc: /* Character to see next line of menu prompt. |
| 11334 | Type this character while in a menu prompt to rotate around the lines of it. */); |
| 11335 | XSETINT (menu_prompt_more_char, ' '); |
| 11336 | |
| 11337 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, |
| 11338 | doc: /* A mask of additional modifier keys to use with every keyboard character. |
| 11339 | Emacs applies the modifiers of the character stored here to each keyboard |
| 11340 | character it reads. For example, after evaluating the expression |
| 11341 | (setq extra-keyboard-modifiers ?\\C-x) |
| 11342 | all input characters will have the control modifier applied to them. |
| 11343 | |
| 11344 | Note that the character ?\\C-@, equivalent to the integer zero, does |
| 11345 | not count as a control character; rather, it counts as a character |
| 11346 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero |
| 11347 | cancels any modification. */); |
| 11348 | extra_keyboard_modifiers = 0; |
| 11349 | |
| 11350 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, |
| 11351 | doc: /* If an editing command sets this to t, deactivate the mark afterward. |
| 11352 | The command loop sets this to nil before each command, |
| 11353 | and tests the value when the command returns. |
| 11354 | Buffer modification stores t in this variable. */); |
| 11355 | Vdeactivate_mark = Qnil; |
| 11356 | |
| 11357 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
| 11358 | doc: /* Temporary storage of pre-command-hook or post-command-hook. */); |
| 11359 | Vcommand_hook_internal = Qnil; |
| 11360 | |
| 11361 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
| 11362 | doc: /* Normal hook run before each command is executed. |
| 11363 | If an unhandled error happens in running this hook, |
| 11364 | the hook value is set to nil, since otherwise the error |
| 11365 | might happen repeatedly and make Emacs nonfunctional. */); |
| 11366 | Vpre_command_hook = Qnil; |
| 11367 | |
| 11368 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, |
| 11369 | doc: /* Normal hook run after each command is executed. |
| 11370 | If an unhandled error happens in running this hook, |
| 11371 | the hook value is set to nil, since otherwise the error |
| 11372 | might happen repeatedly and make Emacs nonfunctional. */); |
| 11373 | Vpost_command_hook = Qnil; |
| 11374 | |
| 11375 | #if 0 |
| 11376 | DEFVAR_LISP ("echo-area-clear-hook", ..., |
| 11377 | doc: /* Normal hook run when clearing the echo area. */); |
| 11378 | #endif |
| 11379 | Qecho_area_clear_hook = intern ("echo-area-clear-hook"); |
| 11380 | staticpro (&Qecho_area_clear_hook); |
| 11381 | SET_SYMBOL_VALUE (Qecho_area_clear_hook, Qnil); |
| 11382 | |
| 11383 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, |
| 11384 | doc: /* Non-nil means menu bar, specified Lucid style, needs to be recomputed. */); |
| 11385 | Vlucid_menu_bar_dirty_flag = Qnil; |
| 11386 | |
| 11387 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
| 11388 | doc: /* List of menu bar items to move to the end of the menu bar. |
| 11389 | The elements of the list are event types that may have menu bar bindings. */); |
| 11390 | Vmenu_bar_final_items = Qnil; |
| 11391 | |
| 11392 | DEFVAR_KBOARD ("overriding-terminal-local-map", |
| 11393 | Voverriding_terminal_local_map, |
| 11394 | doc: /* Per-terminal keymap that overrides all other local keymaps. |
| 11395 | If this variable is non-nil, it is used as a keymap instead of the |
| 11396 | buffer's local map, and the minor mode keymaps and text property keymaps. |
| 11397 | It also replaces `overriding-local-map'. |
| 11398 | |
| 11399 | This variable is intended to let commands such as `universal-argument' |
| 11400 | set up a different keymap for reading the next command. */); |
| 11401 | |
| 11402 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
| 11403 | doc: /* Keymap that overrides all other local keymaps. |
| 11404 | If this variable is non-nil, it is used as a keymap--replacing the |
| 11405 | buffer's local map, the minor mode keymaps, and char property keymaps. */); |
| 11406 | Voverriding_local_map = Qnil; |
| 11407 | |
| 11408 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
| 11409 | doc: /* Non-nil means `overriding-local-map' applies to the menu bar. |
| 11410 | Otherwise, the menu bar continues to reflect the buffer's local map |
| 11411 | and the minor mode maps regardless of `overriding-local-map'. */); |
| 11412 | Voverriding_local_map_menu_flag = Qnil; |
| 11413 | |
| 11414 | DEFVAR_LISP ("special-event-map", &Vspecial_event_map, |
| 11415 | doc: /* Keymap defining bindings for special events to execute at low level. */); |
| 11416 | Vspecial_event_map = Fcons (intern ("keymap"), Qnil); |
| 11417 | |
| 11418 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
| 11419 | doc: /* *Non-nil means generate motion events for mouse motion. */); |
| 11420 | |
| 11421 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
| 11422 | doc: /* Alist of system-specific X windows key symbols. |
| 11423 | Each element should have the form (N . SYMBOL) where N is the |
| 11424 | numeric keysym code (sans the \"system-specific\" bit 1<<28) |
| 11425 | and SYMBOL is its name. */); |
| 11426 | |
| 11427 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, |
| 11428 | doc: /* List of deferred actions to be performed at a later time. |
| 11429 | The precise format isn't relevant here; we just check whether it is nil. */); |
| 11430 | Vdeferred_action_list = Qnil; |
| 11431 | |
| 11432 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, |
| 11433 | doc: /* Function to call to handle deferred actions, after each command. |
| 11434 | This function is called with no arguments after each command |
| 11435 | whenever `deferred-action-list' is non-nil. */); |
| 11436 | Vdeferred_action_function = Qnil; |
| 11437 | |
| 11438 | DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings, |
| 11439 | doc: /* *Non-nil means show the equivalent key-binding when M-x command has one. |
| 11440 | The value can be a length of time to show the message for. |
| 11441 | If the value is non-nil and not a number, we wait 2 seconds. */); |
| 11442 | Vsuggest_key_bindings = Qt; |
| 11443 | |
| 11444 | DEFVAR_LISP ("timer-list", &Vtimer_list, |
| 11445 | doc: /* List of active absolute time timers in order of increasing time. */); |
| 11446 | Vtimer_list = Qnil; |
| 11447 | |
| 11448 | DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list, |
| 11449 | doc: /* List of active idle-time timers in order of increasing time. */); |
| 11450 | Vtimer_idle_list = Qnil; |
| 11451 | |
| 11452 | DEFVAR_LISP ("input-method-function", &Vinput_method_function, |
| 11453 | doc: /* If non-nil, the function that implements the current input method. |
| 11454 | It's called with one argument, a printing character that was just read. |
| 11455 | \(That means a character with code 040...0176.) |
| 11456 | Typically this function uses `read-event' to read additional events. |
| 11457 | When it does so, it should first bind `input-method-function' to nil |
| 11458 | so it will not be called recursively. |
| 11459 | |
| 11460 | The function should return a list of zero or more events |
| 11461 | to be used as input. If it wants to put back some events |
| 11462 | to be reconsidered, separately, by the input method, |
| 11463 | it can add them to the beginning of `unread-command-events'. |
| 11464 | |
| 11465 | The input method function can find in `input-method-previous-method' |
| 11466 | the previous echo area message. |
| 11467 | |
| 11468 | The input method function should refer to the variables |
| 11469 | `input-method-use-echo-area' and `input-method-exit-on-first-char' |
| 11470 | for guidance on what to do. */); |
| 11471 | Vinput_method_function = Qnil; |
| 11472 | |
| 11473 | DEFVAR_LISP ("input-method-previous-message", |
| 11474 | &Vinput_method_previous_message, |
| 11475 | doc: /* When `input-method-function' is called, hold the previous echo area message. |
| 11476 | This variable exists because `read-event' clears the echo area |
| 11477 | before running the input method. It is nil if there was no message. */); |
| 11478 | Vinput_method_previous_message = Qnil; |
| 11479 | |
| 11480 | DEFVAR_LISP ("show-help-function", &Vshow_help_function, |
| 11481 | doc: /* If non-nil, the function that implements the display of help. |
| 11482 | It's called with one argument, the help string to display. */); |
| 11483 | Vshow_help_function = Qnil; |
| 11484 | |
| 11485 | DEFVAR_LISP ("disable-point-adjustment", &Vdisable_point_adjustment, |
| 11486 | doc: /* If non-nil, suppress point adjustment after executing a command. |
| 11487 | |
| 11488 | After a command is executed, if point is moved into a region that has |
| 11489 | special properties (e.g. composition, display), we adjust point to |
| 11490 | the boundary of the region. But, when a command sets this variable to |
| 11491 | non-nil, we suppress the point adjustment. |
| 11492 | |
| 11493 | This variable is set to nil before reading a command, and is checked |
| 11494 | just after executing the command. */); |
| 11495 | Vdisable_point_adjustment = Qnil; |
| 11496 | |
| 11497 | DEFVAR_LISP ("global-disable-point-adjustment", |
| 11498 | &Vglobal_disable_point_adjustment, |
| 11499 | doc: /* *If non-nil, always suppress point adjustment. |
| 11500 | |
| 11501 | The default value is nil, in which case, point adjustment are |
| 11502 | suppressed only after special commands that set |
| 11503 | `disable-point-adjustment' (which see) to non-nil. */); |
| 11504 | Vglobal_disable_point_adjustment = Qnil; |
| 11505 | |
| 11506 | DEFVAR_LISP ("minibuffer-message-timeout", &Vminibuffer_message_timeout, |
| 11507 | doc: /* *How long to display an echo-area message when the minibuffer is active. |
| 11508 | If the value is not a number, such messages don't time out. */); |
| 11509 | Vminibuffer_message_timeout = make_number (2); |
| 11510 | |
| 11511 | DEFVAR_LISP ("throw-on-input", &Vthrow_on_input, |
| 11512 | doc: /* If non-nil, any keyboard input throws to this symbol. |
| 11513 | The value of that variable is passed to `quit-flag' and later causes a |
| 11514 | peculiar kind of quitting. */); |
| 11515 | Vthrow_on_input = Qnil; |
| 11516 | |
| 11517 | DEFVAR_LISP ("command-error-function", &Vcommand_error_function, |
| 11518 | doc: /* If non-nil, function to output error messages. |
| 11519 | The arguments are the error data, a list of the form |
| 11520 | (SIGNALED-CONDITIONS . SIGNAL-DATA) |
| 11521 | such as just as `condition-case' would bind its variable to, |
| 11522 | the context (a string which normally goes at the start of the message), |
| 11523 | and the Lisp function within which the error was signaled. */); |
| 11524 | Vcommand_error_function = Qnil; |
| 11525 | |
| 11526 | DEFVAR_LISP ("enable-disabled-menus-and-buttons", |
| 11527 | &Venable_disabled_menus_and_buttons, |
| 11528 | doc: /* If non-nil, don't ignore events produced by disabled menu items and tool-bar. |
| 11529 | |
| 11530 | Help functions bind this to allow help on disabled menu items |
| 11531 | and tool-bar buttons. */); |
| 11532 | Venable_disabled_menus_and_buttons = Qnil; |
| 11533 | } |
| 11534 | |
| 11535 | void |
| 11536 | keys_of_keyboard () |
| 11537 | { |
| 11538 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); |
| 11539 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); |
| 11540 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); |
| 11541 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); |
| 11542 | initial_define_key (meta_map, 'x', "execute-extended-command"); |
| 11543 | |
| 11544 | initial_define_lispy_key (Vspecial_event_map, "delete-frame", |
| 11545 | "handle-delete-frame"); |
| 11546 | /* Here we used to use `ignore-event' which would simple set prefix-arg to |
| 11547 | current-prefix-arg, as is done in `handle-switch-frame'. |
| 11548 | But `handle-switch-frame is not run from the special-map. |
| 11549 | Commands from that map are run in a special way that automatically |
| 11550 | preserves the prefix-arg. Restoring the prefix arg here is not just |
| 11551 | redundant but harmful: |
| 11552 | - C-u C-x v = |
| 11553 | - current-prefix-arg is set to non-nil, prefix-arg is set to nil. |
| 11554 | - after the first prompt, the exit-minibuffer-hook is run which may |
| 11555 | iconify a frame and thus push a `iconify-frame' event. |
| 11556 | - after running exit-minibuffer-hook, current-prefix-arg is |
| 11557 | restored to the non-nil value it had before the prompt. |
| 11558 | - we enter the second prompt. |
| 11559 | current-prefix-arg is non-nil, prefix-arg is nil. |
| 11560 | - before running the first real event, we run the special iconify-frame |
| 11561 | event, but we pass the `special' arg to execute-command so |
| 11562 | current-prefix-arg and prefix-arg are left untouched. |
| 11563 | - here we foolishly copy the non-nil current-prefix-arg to prefix-arg. |
| 11564 | - the next key event will have a spuriously non-nil current-prefix-arg. */ |
| 11565 | initial_define_lispy_key (Vspecial_event_map, "iconify-frame", |
| 11566 | "ignore"); |
| 11567 | initial_define_lispy_key (Vspecial_event_map, "make-frame-visible", |
| 11568 | "ignore"); |
| 11569 | /* Handling it at such a low-level causes read_key_sequence to get |
| 11570 | * confused because it doesn't realize that the current_buffer was |
| 11571 | * changed by read_char. |
| 11572 | * |
| 11573 | * initial_define_lispy_key (Vspecial_event_map, "select-window", |
| 11574 | * "handle-select-window"); */ |
| 11575 | initial_define_lispy_key (Vspecial_event_map, "save-session", |
| 11576 | "handle-save-session"); |
| 11577 | } |
| 11578 | |
| 11579 | /* Mark the pointers in the kboard objects. |
| 11580 | Called by the Fgarbage_collector. */ |
| 11581 | void |
| 11582 | mark_kboards () |
| 11583 | { |
| 11584 | KBOARD *kb; |
| 11585 | Lisp_Object *p; |
| 11586 | for (kb = all_kboards; kb; kb = kb->next_kboard) |
| 11587 | { |
| 11588 | if (kb->kbd_macro_buffer) |
| 11589 | for (p = kb->kbd_macro_buffer; p < kb->kbd_macro_ptr; p++) |
| 11590 | mark_object (*p); |
| 11591 | mark_object (kb->Voverriding_terminal_local_map); |
| 11592 | mark_object (kb->Vlast_command); |
| 11593 | mark_object (kb->Vreal_last_command); |
| 11594 | mark_object (kb->Vprefix_arg); |
| 11595 | mark_object (kb->Vlast_prefix_arg); |
| 11596 | mark_object (kb->kbd_queue); |
| 11597 | mark_object (kb->defining_kbd_macro); |
| 11598 | mark_object (kb->Vlast_kbd_macro); |
| 11599 | mark_object (kb->Vsystem_key_alist); |
| 11600 | mark_object (kb->system_key_syms); |
| 11601 | mark_object (kb->Vdefault_minibuffer_frame); |
| 11602 | mark_object (kb->echo_string); |
| 11603 | } |
| 11604 | { |
| 11605 | struct input_event *event; |
| 11606 | for (event = kbd_fetch_ptr; event != kbd_store_ptr; event++) |
| 11607 | { |
| 11608 | if (event == kbd_buffer + KBD_BUFFER_SIZE) |
| 11609 | event = kbd_buffer; |
| 11610 | if (event->kind != SELECTION_REQUEST_EVENT |
| 11611 | && event->kind != SELECTION_CLEAR_EVENT) |
| 11612 | { |
| 11613 | mark_object (event->x); |
| 11614 | mark_object (event->y); |
| 11615 | } |
| 11616 | mark_object (event->frame_or_window); |
| 11617 | mark_object (event->arg); |
| 11618 | } |
| 11619 | } |
| 11620 | } |
| 11621 | |
| 11622 | /* arch-tag: 774e34d7-6d31-42f3-8397-e079a4e4c9ca |
| 11623 | (do not change this comment) */ |