| 1 | /* Terminal control module for terminals described by TERMCAP |
| 2 | Copyright (C) 1985-1987, 1993-1995, 1998, 2000-2014 Free Software |
| 3 | Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software: you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation, either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | /* New redisplay, TTY faces by Gerd Moellmann <gerd@gnu.org>. */ |
| 21 | |
| 22 | #include <config.h> |
| 23 | #include <errno.h> |
| 24 | #include <fcntl.h> |
| 25 | #include <stdio.h> |
| 26 | #include <sys/file.h> |
| 27 | #include <sys/time.h> |
| 28 | #include <unistd.h> |
| 29 | |
| 30 | #include "lisp.h" |
| 31 | #include "termchar.h" |
| 32 | #include "tparam.h" |
| 33 | #include "character.h" |
| 34 | #include "buffer.h" |
| 35 | #include "charset.h" |
| 36 | #include "coding.h" |
| 37 | #include "composite.h" |
| 38 | #include "keyboard.h" |
| 39 | #include "frame.h" |
| 40 | #include "disptab.h" |
| 41 | #include "termhooks.h" |
| 42 | #include "dispextern.h" |
| 43 | #include "window.h" |
| 44 | #include "keymap.h" |
| 45 | #include "blockinput.h" |
| 46 | #include "syssignal.h" |
| 47 | #include "systty.h" |
| 48 | #include "intervals.h" |
| 49 | #ifdef MSDOS |
| 50 | #include "msdos.h" |
| 51 | static int been_here = -1; |
| 52 | #endif |
| 53 | |
| 54 | #ifdef USE_X_TOOLKIT |
| 55 | #include "../lwlib/lwlib.h" |
| 56 | #endif |
| 57 | |
| 58 | #include "cm.h" |
| 59 | #ifdef HAVE_X_WINDOWS |
| 60 | #include "xterm.h" |
| 61 | #endif |
| 62 | |
| 63 | #include "menu.h" |
| 64 | |
| 65 | /* The name of the default console device. */ |
| 66 | #ifdef WINDOWSNT |
| 67 | #define DEV_TTY "CONOUT$" |
| 68 | #include "w32term.h" |
| 69 | #else |
| 70 | #define DEV_TTY "/dev/tty" |
| 71 | #endif |
| 72 | |
| 73 | static void tty_set_scroll_region (struct frame *f, int start, int stop); |
| 74 | static void turn_on_face (struct frame *, int face_id); |
| 75 | static void turn_off_face (struct frame *, int face_id); |
| 76 | static void tty_turn_off_highlight (struct tty_display_info *); |
| 77 | static void tty_show_cursor (struct tty_display_info *); |
| 78 | static void tty_hide_cursor (struct tty_display_info *); |
| 79 | static void tty_background_highlight (struct tty_display_info *tty); |
| 80 | static struct terminal *get_tty_terminal (Lisp_Object, bool); |
| 81 | static void clear_tty_hooks (struct terminal *terminal); |
| 82 | static void set_tty_hooks (struct terminal *terminal); |
| 83 | static void dissociate_if_controlling_tty (int fd); |
| 84 | static void delete_tty (struct terminal *); |
| 85 | static _Noreturn void maybe_fatal (bool, struct terminal *, |
| 86 | const char *, const char *, ...) |
| 87 | ATTRIBUTE_FORMAT_PRINTF (3, 5) ATTRIBUTE_FORMAT_PRINTF (4, 5); |
| 88 | static _Noreturn void vfatal (const char *str, va_list ap) |
| 89 | ATTRIBUTE_FORMAT_PRINTF (1, 0); |
| 90 | |
| 91 | |
| 92 | #define OUTPUT(tty, a) \ |
| 93 | emacs_tputs ((tty), a, \ |
| 94 | FRAME_LINES (XFRAME (selected_frame)) - curY (tty), \ |
| 95 | cmputc) |
| 96 | |
| 97 | #define OUTPUT1(tty, a) emacs_tputs ((tty), a, 1, cmputc) |
| 98 | #define OUTPUTL(tty, a, lines) emacs_tputs ((tty), a, lines, cmputc) |
| 99 | |
| 100 | #define OUTPUT_IF(tty, a) \ |
| 101 | do { \ |
| 102 | if (a) \ |
| 103 | OUTPUT (tty, a); \ |
| 104 | } while (0) |
| 105 | |
| 106 | #define OUTPUT1_IF(tty, a) do { if (a) emacs_tputs ((tty), a, 1, cmputc); } while (0) |
| 107 | |
| 108 | /* Display space properties */ |
| 109 | |
| 110 | /* Chain of all tty device parameters. */ |
| 111 | struct tty_display_info *tty_list; |
| 112 | |
| 113 | /* Meaning of bits in no_color_video. Each bit set means that the |
| 114 | corresponding attribute cannot be combined with colors. */ |
| 115 | |
| 116 | enum no_color_bit |
| 117 | { |
| 118 | NC_STANDOUT = 1 << 0, |
| 119 | NC_UNDERLINE = 1 << 1, |
| 120 | NC_REVERSE = 1 << 2, |
| 121 | NC_ITALIC = 1 << 3, |
| 122 | NC_DIM = 1 << 4, |
| 123 | NC_BOLD = 1 << 5, |
| 124 | NC_INVIS = 1 << 6, |
| 125 | NC_PROTECT = 1 << 7 |
| 126 | }; |
| 127 | |
| 128 | /* internal state */ |
| 129 | |
| 130 | /* The largest frame width in any call to calculate_costs. */ |
| 131 | |
| 132 | static int max_frame_cols; |
| 133 | |
| 134 | static Lisp_Object Qtty_mode_set_strings; |
| 135 | static Lisp_Object Qtty_mode_reset_strings; |
| 136 | |
| 137 | \f |
| 138 | |
| 139 | #ifdef HAVE_GPM |
| 140 | #include <sys/fcntl.h> |
| 141 | |
| 142 | /* The device for which we have enabled gpm support (or NULL). */ |
| 143 | struct tty_display_info *gpm_tty = NULL; |
| 144 | |
| 145 | /* Last recorded mouse coordinates. */ |
| 146 | static int last_mouse_x, last_mouse_y; |
| 147 | #endif /* HAVE_GPM */ |
| 148 | |
| 149 | /* Ring the bell on a tty. */ |
| 150 | |
| 151 | static void |
| 152 | tty_ring_bell (struct frame *f) |
| 153 | { |
| 154 | struct tty_display_info *tty = FRAME_TTY (f); |
| 155 | |
| 156 | if (tty->output) |
| 157 | { |
| 158 | OUTPUT (tty, (tty->TS_visible_bell && visible_bell |
| 159 | ? tty->TS_visible_bell |
| 160 | : tty->TS_bell)); |
| 161 | fflush (tty->output); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | /* Set up termcap modes for Emacs. */ |
| 166 | |
| 167 | static void |
| 168 | tty_send_additional_strings (struct terminal *terminal, Lisp_Object sym) |
| 169 | { |
| 170 | Lisp_Object lisp_terminal; |
| 171 | Lisp_Object extra_codes; |
| 172 | struct tty_display_info *tty = terminal->display_info.tty; |
| 173 | |
| 174 | XSETTERMINAL (lisp_terminal, terminal); |
| 175 | for (extra_codes = Fterminal_parameter (lisp_terminal, sym); |
| 176 | CONSP (extra_codes); |
| 177 | extra_codes = XCDR (extra_codes)) |
| 178 | { |
| 179 | Lisp_Object string = XCAR (extra_codes); |
| 180 | if (STRINGP (string)) |
| 181 | { |
| 182 | fwrite (SDATA (string), 1, SBYTES (string), tty->output); |
| 183 | if (tty->termscript) |
| 184 | fwrite (SDATA (string), 1, SBYTES (string), tty->termscript); |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | static void |
| 190 | tty_set_terminal_modes (struct terminal *terminal) |
| 191 | { |
| 192 | struct tty_display_info *tty = terminal->display_info.tty; |
| 193 | |
| 194 | if (tty->output) |
| 195 | { |
| 196 | if (tty->TS_termcap_modes) |
| 197 | OUTPUT (tty, tty->TS_termcap_modes); |
| 198 | else |
| 199 | { |
| 200 | /* Output enough newlines to scroll all the old screen contents |
| 201 | off the screen, so it won't be overwritten and lost. */ |
| 202 | int i; |
| 203 | current_tty = tty; |
| 204 | for (i = 0; i < FRAME_LINES (XFRAME (selected_frame)); i++) |
| 205 | cmputc ('\n'); |
| 206 | } |
| 207 | |
| 208 | OUTPUT_IF (tty, visible_cursor ? tty->TS_cursor_visible : tty->TS_cursor_normal); |
| 209 | OUTPUT_IF (tty, tty->TS_keypad_mode); |
| 210 | losecursor (tty); |
| 211 | tty_send_additional_strings (terminal, Qtty_mode_set_strings); |
| 212 | fflush (tty->output); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | /* Reset termcap modes before exiting Emacs. */ |
| 217 | |
| 218 | static void |
| 219 | tty_reset_terminal_modes (struct terminal *terminal) |
| 220 | { |
| 221 | struct tty_display_info *tty = terminal->display_info.tty; |
| 222 | |
| 223 | if (tty->output) |
| 224 | { |
| 225 | tty_send_additional_strings (terminal, Qtty_mode_reset_strings); |
| 226 | tty_turn_off_highlight (tty); |
| 227 | tty_turn_off_insert (tty); |
| 228 | OUTPUT_IF (tty, tty->TS_end_keypad_mode); |
| 229 | OUTPUT_IF (tty, tty->TS_cursor_normal); |
| 230 | OUTPUT_IF (tty, tty->TS_end_termcap_modes); |
| 231 | OUTPUT_IF (tty, tty->TS_orig_pair); |
| 232 | /* Output raw CR so kernel can track the cursor hpos. */ |
| 233 | current_tty = tty; |
| 234 | cmputc ('\r'); |
| 235 | fflush (tty->output); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | /* Flag the end of a display update on a termcap terminal. */ |
| 240 | |
| 241 | static void |
| 242 | tty_update_end (struct frame *f) |
| 243 | { |
| 244 | struct tty_display_info *tty = FRAME_TTY (f); |
| 245 | |
| 246 | if (!XWINDOW (selected_window)->cursor_off_p) |
| 247 | tty_show_cursor (tty); |
| 248 | tty_turn_off_insert (tty); |
| 249 | tty_background_highlight (tty); |
| 250 | fflush (tty->output); |
| 251 | } |
| 252 | |
| 253 | /* The implementation of set_terminal_window for termcap frames. */ |
| 254 | |
| 255 | static void |
| 256 | tty_set_terminal_window (struct frame *f, int size) |
| 257 | { |
| 258 | struct tty_display_info *tty = FRAME_TTY (f); |
| 259 | |
| 260 | tty->specified_window = size ? size : FRAME_LINES (f); |
| 261 | if (FRAME_SCROLL_REGION_OK (f)) |
| 262 | tty_set_scroll_region (f, 0, tty->specified_window); |
| 263 | } |
| 264 | |
| 265 | static void |
| 266 | tty_set_scroll_region (struct frame *f, int start, int stop) |
| 267 | { |
| 268 | char *buf; |
| 269 | struct tty_display_info *tty = FRAME_TTY (f); |
| 270 | |
| 271 | if (tty->TS_set_scroll_region) |
| 272 | buf = tparam (tty->TS_set_scroll_region, 0, 0, start, stop - 1, 0, 0); |
| 273 | else if (tty->TS_set_scroll_region_1) |
| 274 | buf = tparam (tty->TS_set_scroll_region_1, 0, 0, |
| 275 | FRAME_LINES (f), start, |
| 276 | FRAME_LINES (f) - stop, |
| 277 | FRAME_LINES (f)); |
| 278 | else |
| 279 | buf = tparam (tty->TS_set_window, 0, 0, start, 0, stop, FRAME_COLS (f)); |
| 280 | |
| 281 | OUTPUT (tty, buf); |
| 282 | xfree (buf); |
| 283 | losecursor (tty); |
| 284 | } |
| 285 | |
| 286 | \f |
| 287 | static void |
| 288 | tty_turn_on_insert (struct tty_display_info *tty) |
| 289 | { |
| 290 | if (!tty->insert_mode) |
| 291 | OUTPUT (tty, tty->TS_insert_mode); |
| 292 | tty->insert_mode = 1; |
| 293 | } |
| 294 | |
| 295 | void |
| 296 | tty_turn_off_insert (struct tty_display_info *tty) |
| 297 | { |
| 298 | if (tty->insert_mode) |
| 299 | OUTPUT (tty, tty->TS_end_insert_mode); |
| 300 | tty->insert_mode = 0; |
| 301 | } |
| 302 | \f |
| 303 | /* Handle highlighting. */ |
| 304 | |
| 305 | static void |
| 306 | tty_turn_off_highlight (struct tty_display_info *tty) |
| 307 | { |
| 308 | if (tty->standout_mode) |
| 309 | OUTPUT_IF (tty, tty->TS_end_standout_mode); |
| 310 | tty->standout_mode = 0; |
| 311 | } |
| 312 | |
| 313 | static void |
| 314 | tty_turn_on_highlight (struct tty_display_info *tty) |
| 315 | { |
| 316 | if (!tty->standout_mode) |
| 317 | OUTPUT_IF (tty, tty->TS_standout_mode); |
| 318 | tty->standout_mode = 1; |
| 319 | } |
| 320 | |
| 321 | static void |
| 322 | tty_toggle_highlight (struct tty_display_info *tty) |
| 323 | { |
| 324 | if (tty->standout_mode) |
| 325 | tty_turn_off_highlight (tty); |
| 326 | else |
| 327 | tty_turn_on_highlight (tty); |
| 328 | } |
| 329 | |
| 330 | |
| 331 | /* Make cursor invisible. */ |
| 332 | |
| 333 | static void |
| 334 | tty_hide_cursor (struct tty_display_info *tty) |
| 335 | { |
| 336 | if (tty->cursor_hidden == 0) |
| 337 | { |
| 338 | tty->cursor_hidden = 1; |
| 339 | #ifdef WINDOWSNT |
| 340 | w32con_hide_cursor (); |
| 341 | #else |
| 342 | OUTPUT_IF (tty, tty->TS_cursor_invisible); |
| 343 | #endif |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | |
| 348 | /* Ensure that cursor is visible. */ |
| 349 | |
| 350 | static void |
| 351 | tty_show_cursor (struct tty_display_info *tty) |
| 352 | { |
| 353 | if (tty->cursor_hidden) |
| 354 | { |
| 355 | tty->cursor_hidden = 0; |
| 356 | #ifdef WINDOWSNT |
| 357 | w32con_show_cursor (); |
| 358 | #else |
| 359 | OUTPUT_IF (tty, tty->TS_cursor_normal); |
| 360 | if (visible_cursor) |
| 361 | OUTPUT_IF (tty, tty->TS_cursor_visible); |
| 362 | #endif |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | |
| 367 | /* Set standout mode to the state it should be in for |
| 368 | empty space inside windows. What this is, |
| 369 | depends on the user option inverse-video. */ |
| 370 | |
| 371 | static void |
| 372 | tty_background_highlight (struct tty_display_info *tty) |
| 373 | { |
| 374 | if (inverse_video) |
| 375 | tty_turn_on_highlight (tty); |
| 376 | else |
| 377 | tty_turn_off_highlight (tty); |
| 378 | } |
| 379 | |
| 380 | /* Set standout mode to the mode specified for the text to be output. */ |
| 381 | |
| 382 | static void |
| 383 | tty_highlight_if_desired (struct tty_display_info *tty) |
| 384 | { |
| 385 | if (inverse_video) |
| 386 | tty_turn_on_highlight (tty); |
| 387 | else |
| 388 | tty_turn_off_highlight (tty); |
| 389 | } |
| 390 | \f |
| 391 | |
| 392 | /* Move cursor to row/column position VPOS/HPOS. HPOS/VPOS are |
| 393 | frame-relative coordinates. */ |
| 394 | |
| 395 | static void |
| 396 | tty_cursor_to (struct frame *f, int vpos, int hpos) |
| 397 | { |
| 398 | struct tty_display_info *tty = FRAME_TTY (f); |
| 399 | |
| 400 | /* Detect the case where we are called from reset_sys_modes |
| 401 | and the costs have never been calculated. Do nothing. */ |
| 402 | if (! tty->costs_set) |
| 403 | return; |
| 404 | |
| 405 | if (curY (tty) == vpos |
| 406 | && curX (tty) == hpos) |
| 407 | return; |
| 408 | if (!tty->TF_standout_motion) |
| 409 | tty_background_highlight (tty); |
| 410 | if (!tty->TF_insmode_motion) |
| 411 | tty_turn_off_insert (tty); |
| 412 | cmgoto (tty, vpos, hpos); |
| 413 | } |
| 414 | |
| 415 | /* Similar but don't take any account of the wasted characters. */ |
| 416 | |
| 417 | static void |
| 418 | tty_raw_cursor_to (struct frame *f, int row, int col) |
| 419 | { |
| 420 | struct tty_display_info *tty = FRAME_TTY (f); |
| 421 | |
| 422 | if (curY (tty) == row |
| 423 | && curX (tty) == col) |
| 424 | return; |
| 425 | if (!tty->TF_standout_motion) |
| 426 | tty_background_highlight (tty); |
| 427 | if (!tty->TF_insmode_motion) |
| 428 | tty_turn_off_insert (tty); |
| 429 | cmgoto (tty, row, col); |
| 430 | } |
| 431 | \f |
| 432 | /* Erase operations */ |
| 433 | |
| 434 | /* Clear from cursor to end of frame on a termcap device. */ |
| 435 | |
| 436 | static void |
| 437 | tty_clear_to_end (struct frame *f) |
| 438 | { |
| 439 | register int i; |
| 440 | struct tty_display_info *tty = FRAME_TTY (f); |
| 441 | |
| 442 | if (tty->TS_clr_to_bottom) |
| 443 | { |
| 444 | tty_background_highlight (tty); |
| 445 | OUTPUT (tty, tty->TS_clr_to_bottom); |
| 446 | } |
| 447 | else |
| 448 | { |
| 449 | for (i = curY (tty); i < FRAME_LINES (f); i++) |
| 450 | { |
| 451 | cursor_to (f, i, 0); |
| 452 | clear_end_of_line (f, FRAME_COLS (f)); |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | /* Clear an entire termcap frame. */ |
| 458 | |
| 459 | static void |
| 460 | tty_clear_frame (struct frame *f) |
| 461 | { |
| 462 | struct tty_display_info *tty = FRAME_TTY (f); |
| 463 | |
| 464 | if (tty->TS_clr_frame) |
| 465 | { |
| 466 | tty_background_highlight (tty); |
| 467 | OUTPUT (tty, tty->TS_clr_frame); |
| 468 | cmat (tty, 0, 0); |
| 469 | } |
| 470 | else |
| 471 | { |
| 472 | cursor_to (f, 0, 0); |
| 473 | clear_to_end (f); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /* An implementation of clear_end_of_line for termcap frames. |
| 478 | |
| 479 | Note that the cursor may be moved, on terminals lacking a `ce' string. */ |
| 480 | |
| 481 | static void |
| 482 | tty_clear_end_of_line (struct frame *f, int first_unused_hpos) |
| 483 | { |
| 484 | register int i; |
| 485 | struct tty_display_info *tty = FRAME_TTY (f); |
| 486 | |
| 487 | /* Detect the case where we are called from reset_sys_modes |
| 488 | and the costs have never been calculated. Do nothing. */ |
| 489 | if (! tty->costs_set) |
| 490 | return; |
| 491 | |
| 492 | if (curX (tty) >= first_unused_hpos) |
| 493 | return; |
| 494 | tty_background_highlight (tty); |
| 495 | if (tty->TS_clr_line) |
| 496 | { |
| 497 | OUTPUT1 (tty, tty->TS_clr_line); |
| 498 | } |
| 499 | else |
| 500 | { /* have to do it the hard way */ |
| 501 | tty_turn_off_insert (tty); |
| 502 | |
| 503 | /* Do not write in last row last col with Auto-wrap on. */ |
| 504 | if (AutoWrap (tty) |
| 505 | && curY (tty) == FrameRows (tty) - 1 |
| 506 | && first_unused_hpos == FrameCols (tty)) |
| 507 | first_unused_hpos--; |
| 508 | |
| 509 | for (i = curX (tty); i < first_unused_hpos; i++) |
| 510 | { |
| 511 | if (tty->termscript) |
| 512 | fputc (' ', tty->termscript); |
| 513 | fputc (' ', tty->output); |
| 514 | } |
| 515 | cmplus (tty, first_unused_hpos - curX (tty)); |
| 516 | } |
| 517 | } |
| 518 | \f |
| 519 | /* Buffers to store the source and result of code conversion for terminal. */ |
| 520 | static unsigned char *encode_terminal_src; |
| 521 | static unsigned char *encode_terminal_dst; |
| 522 | /* Allocated sizes of the above buffers. */ |
| 523 | static ptrdiff_t encode_terminal_src_size; |
| 524 | static ptrdiff_t encode_terminal_dst_size; |
| 525 | |
| 526 | /* Encode SRC_LEN glyphs starting at SRC to terminal output codes. |
| 527 | Set CODING->produced to the byte-length of the resulting byte |
| 528 | sequence, and return a pointer to that byte sequence. */ |
| 529 | |
| 530 | unsigned char * |
| 531 | encode_terminal_code (struct glyph *src, int src_len, |
| 532 | struct coding_system *coding) |
| 533 | { |
| 534 | struct glyph *src_end = src + src_len; |
| 535 | unsigned char *buf; |
| 536 | ptrdiff_t nchars, nbytes, required; |
| 537 | ptrdiff_t tlen = GLYPH_TABLE_LENGTH; |
| 538 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; |
| 539 | Lisp_Object charset_list; |
| 540 | |
| 541 | /* Allocate sufficient size of buffer to store all characters in |
| 542 | multibyte-form. But, it may be enlarged on demand if |
| 543 | Vglyph_table contains a string or a composite glyph is |
| 544 | encountered. */ |
| 545 | if (min (PTRDIFF_MAX, SIZE_MAX) / MAX_MULTIBYTE_LENGTH < src_len) |
| 546 | memory_full (SIZE_MAX); |
| 547 | required = src_len; |
| 548 | required *= MAX_MULTIBYTE_LENGTH; |
| 549 | if (encode_terminal_src_size < required) |
| 550 | { |
| 551 | encode_terminal_src = xrealloc (encode_terminal_src, required); |
| 552 | encode_terminal_src_size = required; |
| 553 | } |
| 554 | |
| 555 | charset_list = coding_charset_list (coding); |
| 556 | |
| 557 | buf = encode_terminal_src; |
| 558 | nchars = 0; |
| 559 | while (src < src_end) |
| 560 | { |
| 561 | if (src->type == COMPOSITE_GLYPH) |
| 562 | { |
| 563 | struct composition *cmp IF_LINT (= NULL); |
| 564 | Lisp_Object gstring IF_LINT (= Qnil); |
| 565 | int i; |
| 566 | |
| 567 | nbytes = buf - encode_terminal_src; |
| 568 | if (src->u.cmp.automatic) |
| 569 | { |
| 570 | gstring = composition_gstring_from_id (src->u.cmp.id); |
| 571 | required = src->slice.cmp.to - src->slice.cmp.from + 1; |
| 572 | } |
| 573 | else |
| 574 | { |
| 575 | cmp = composition_table[src->u.cmp.id]; |
| 576 | required = cmp->glyph_len; |
| 577 | required *= MAX_MULTIBYTE_LENGTH; |
| 578 | } |
| 579 | |
| 580 | if (encode_terminal_src_size - nbytes < required) |
| 581 | { |
| 582 | encode_terminal_src = |
| 583 | xpalloc (encode_terminal_src, &encode_terminal_src_size, |
| 584 | required - (encode_terminal_src_size - nbytes), |
| 585 | -1, 1); |
| 586 | buf = encode_terminal_src + nbytes; |
| 587 | } |
| 588 | |
| 589 | if (src->u.cmp.automatic) |
| 590 | for (i = src->slice.cmp.from; i <= src->slice.cmp.to; i++) |
| 591 | { |
| 592 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); |
| 593 | int c = LGLYPH_CHAR (g); |
| 594 | |
| 595 | if (! char_charset (c, charset_list, NULL)) |
| 596 | c = '?'; |
| 597 | buf += CHAR_STRING (c, buf); |
| 598 | nchars++; |
| 599 | } |
| 600 | else |
| 601 | for (i = 0; i < cmp->glyph_len; i++) |
| 602 | { |
| 603 | int c = COMPOSITION_GLYPH (cmp, i); |
| 604 | |
| 605 | /* TAB in a composition means display glyphs with |
| 606 | padding space on the left or right. */ |
| 607 | if (c == '\t') |
| 608 | continue; |
| 609 | if (char_charset (c, charset_list, NULL)) |
| 610 | { |
| 611 | if (CHAR_WIDTH (c) == 0 |
| 612 | && i > 0 && COMPOSITION_GLYPH (cmp, i - 1) == '\t') |
| 613 | /* Should be left-padded */ |
| 614 | { |
| 615 | buf += CHAR_STRING (' ', buf); |
| 616 | nchars++; |
| 617 | } |
| 618 | } |
| 619 | else |
| 620 | c = '?'; |
| 621 | buf += CHAR_STRING (c, buf); |
| 622 | nchars++; |
| 623 | } |
| 624 | } |
| 625 | /* We must skip glyphs to be padded for a wide character. */ |
| 626 | else if (! CHAR_GLYPH_PADDING_P (*src)) |
| 627 | { |
| 628 | GLYPH g; |
| 629 | int c IF_LINT (= 0); |
| 630 | Lisp_Object string; |
| 631 | |
| 632 | string = Qnil; |
| 633 | SET_GLYPH_FROM_CHAR_GLYPH (g, src[0]); |
| 634 | |
| 635 | if (GLYPH_INVALID_P (g) || GLYPH_SIMPLE_P (tbase, tlen, g)) |
| 636 | { |
| 637 | /* This glyph doesn't have an entry in Vglyph_table. */ |
| 638 | c = src->u.ch; |
| 639 | } |
| 640 | else |
| 641 | { |
| 642 | /* This glyph has an entry in Vglyph_table, |
| 643 | so process any alias before testing for simpleness. */ |
| 644 | GLYPH_FOLLOW_ALIASES (tbase, tlen, g); |
| 645 | |
| 646 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) |
| 647 | /* We set the multi-byte form of a character in G |
| 648 | (that should be an ASCII character) at WORKBUF. */ |
| 649 | c = GLYPH_CHAR (g); |
| 650 | else |
| 651 | /* We have a string in Vglyph_table. */ |
| 652 | string = tbase[GLYPH_CHAR (g)]; |
| 653 | } |
| 654 | |
| 655 | if (NILP (string)) |
| 656 | { |
| 657 | nbytes = buf - encode_terminal_src; |
| 658 | if (encode_terminal_src_size - nbytes < MAX_MULTIBYTE_LENGTH) |
| 659 | { |
| 660 | encode_terminal_src = |
| 661 | xpalloc (encode_terminal_src, &encode_terminal_src_size, |
| 662 | MAX_MULTIBYTE_LENGTH, -1, 1); |
| 663 | buf = encode_terminal_src + nbytes; |
| 664 | } |
| 665 | if (CHAR_BYTE8_P (c) |
| 666 | || char_charset (c, charset_list, NULL)) |
| 667 | { |
| 668 | /* Store the multibyte form of C at BUF. */ |
| 669 | buf += CHAR_STRING (c, buf); |
| 670 | nchars++; |
| 671 | } |
| 672 | else |
| 673 | { |
| 674 | /* C is not encodable. */ |
| 675 | *buf++ = '?'; |
| 676 | nchars++; |
| 677 | while (src + 1 < src_end && CHAR_GLYPH_PADDING_P (src[1])) |
| 678 | { |
| 679 | *buf++ = '?'; |
| 680 | nchars++; |
| 681 | src++; |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | if (! STRING_MULTIBYTE (string)) |
| 688 | string = string_to_multibyte (string); |
| 689 | nbytes = buf - encode_terminal_src; |
| 690 | if (encode_terminal_src_size - nbytes < SBYTES (string)) |
| 691 | { |
| 692 | encode_terminal_src = |
| 693 | xpalloc (encode_terminal_src, &encode_terminal_src_size, |
| 694 | (SBYTES (string) |
| 695 | - (encode_terminal_src_size - nbytes)), |
| 696 | -1, 1); |
| 697 | buf = encode_terminal_src + nbytes; |
| 698 | } |
| 699 | memcpy (buf, SDATA (string), SBYTES (string)); |
| 700 | buf += SBYTES (string); |
| 701 | nchars += SCHARS (string); |
| 702 | } |
| 703 | } |
| 704 | src++; |
| 705 | } |
| 706 | |
| 707 | if (nchars == 0) |
| 708 | { |
| 709 | coding->produced = 0; |
| 710 | return NULL; |
| 711 | } |
| 712 | |
| 713 | nbytes = buf - encode_terminal_src; |
| 714 | coding->source = encode_terminal_src; |
| 715 | if (encode_terminal_dst_size == 0) |
| 716 | { |
| 717 | encode_terminal_dst = xrealloc (encode_terminal_dst, |
| 718 | encode_terminal_src_size); |
| 719 | encode_terminal_dst_size = encode_terminal_src_size; |
| 720 | } |
| 721 | coding->destination = encode_terminal_dst; |
| 722 | coding->dst_bytes = encode_terminal_dst_size; |
| 723 | encode_coding_object (coding, Qnil, 0, 0, nchars, nbytes, Qnil); |
| 724 | /* coding->destination may have been reallocated. */ |
| 725 | encode_terminal_dst = coding->destination; |
| 726 | encode_terminal_dst_size = coding->dst_bytes; |
| 727 | |
| 728 | return (encode_terminal_dst); |
| 729 | } |
| 730 | |
| 731 | |
| 732 | |
| 733 | /* An implementation of write_glyphs for termcap frames. */ |
| 734 | |
| 735 | static void |
| 736 | tty_write_glyphs (struct frame *f, struct glyph *string, int len) |
| 737 | { |
| 738 | unsigned char *conversion_buffer; |
| 739 | struct coding_system *coding; |
| 740 | int n, stringlen; |
| 741 | |
| 742 | struct tty_display_info *tty = FRAME_TTY (f); |
| 743 | |
| 744 | tty_turn_off_insert (tty); |
| 745 | tty_hide_cursor (tty); |
| 746 | |
| 747 | /* Don't dare write in last column of bottom line, if Auto-Wrap, |
| 748 | since that would scroll the whole frame on some terminals. */ |
| 749 | |
| 750 | if (AutoWrap (tty) |
| 751 | && curY (tty) + 1 == FRAME_LINES (f) |
| 752 | && (curX (tty) + len) == FRAME_COLS (f)) |
| 753 | len --; |
| 754 | if (len <= 0) |
| 755 | return; |
| 756 | |
| 757 | cmplus (tty, len); |
| 758 | |
| 759 | /* If terminal_coding does any conversion, use it, otherwise use |
| 760 | safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here |
| 761 | because it always return 1 if the member src_multibyte is 1. */ |
| 762 | coding = (FRAME_TERMINAL_CODING (f)->common_flags & CODING_REQUIRE_ENCODING_MASK |
| 763 | ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding); |
| 764 | /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at |
| 765 | the tail. */ |
| 766 | coding->mode &= ~CODING_MODE_LAST_BLOCK; |
| 767 | |
| 768 | for (stringlen = len; stringlen != 0; stringlen -= n) |
| 769 | { |
| 770 | /* Identify a run of glyphs with the same face. */ |
| 771 | int face_id = string->face_id; |
| 772 | |
| 773 | for (n = 1; n < stringlen; ++n) |
| 774 | if (string[n].face_id != face_id) |
| 775 | break; |
| 776 | |
| 777 | /* Turn appearance modes of the face of the run on. */ |
| 778 | tty_highlight_if_desired (tty); |
| 779 | turn_on_face (f, face_id); |
| 780 | |
| 781 | if (n == stringlen) |
| 782 | /* This is the last run. */ |
| 783 | coding->mode |= CODING_MODE_LAST_BLOCK; |
| 784 | conversion_buffer = encode_terminal_code (string, n, coding); |
| 785 | if (coding->produced > 0) |
| 786 | { |
| 787 | block_input (); |
| 788 | fwrite (conversion_buffer, 1, coding->produced, tty->output); |
| 789 | if (ferror (tty->output)) |
| 790 | clearerr (tty->output); |
| 791 | if (tty->termscript) |
| 792 | fwrite (conversion_buffer, 1, coding->produced, tty->termscript); |
| 793 | unblock_input (); |
| 794 | } |
| 795 | string += n; |
| 796 | |
| 797 | /* Turn appearance modes off. */ |
| 798 | turn_off_face (f, face_id); |
| 799 | tty_turn_off_highlight (tty); |
| 800 | } |
| 801 | |
| 802 | cmcheckmagic (tty); |
| 803 | } |
| 804 | |
| 805 | #ifdef HAVE_GPM /* Only used by GPM code. */ |
| 806 | |
| 807 | static void |
| 808 | tty_write_glyphs_with_face (register struct frame *f, register struct glyph *string, |
| 809 | register int len, register int face_id) |
| 810 | { |
| 811 | unsigned char *conversion_buffer; |
| 812 | struct coding_system *coding; |
| 813 | |
| 814 | struct tty_display_info *tty = FRAME_TTY (f); |
| 815 | |
| 816 | tty_turn_off_insert (tty); |
| 817 | tty_hide_cursor (tty); |
| 818 | |
| 819 | /* Don't dare write in last column of bottom line, if Auto-Wrap, |
| 820 | since that would scroll the whole frame on some terminals. */ |
| 821 | |
| 822 | if (AutoWrap (tty) |
| 823 | && curY (tty) + 1 == FRAME_LINES (f) |
| 824 | && (curX (tty) + len) == FRAME_COLS (f)) |
| 825 | len --; |
| 826 | if (len <= 0) |
| 827 | return; |
| 828 | |
| 829 | cmplus (tty, len); |
| 830 | |
| 831 | /* If terminal_coding does any conversion, use it, otherwise use |
| 832 | safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here |
| 833 | because it always return 1 if the member src_multibyte is 1. */ |
| 834 | coding = (FRAME_TERMINAL_CODING (f)->common_flags & CODING_REQUIRE_ENCODING_MASK |
| 835 | ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding); |
| 836 | /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at |
| 837 | the tail. */ |
| 838 | coding->mode &= ~CODING_MODE_LAST_BLOCK; |
| 839 | |
| 840 | /* Turn appearance modes of the face. */ |
| 841 | tty_highlight_if_desired (tty); |
| 842 | turn_on_face (f, face_id); |
| 843 | |
| 844 | coding->mode |= CODING_MODE_LAST_BLOCK; |
| 845 | conversion_buffer = encode_terminal_code (string, len, coding); |
| 846 | if (coding->produced > 0) |
| 847 | { |
| 848 | block_input (); |
| 849 | fwrite (conversion_buffer, 1, coding->produced, tty->output); |
| 850 | if (ferror (tty->output)) |
| 851 | clearerr (tty->output); |
| 852 | if (tty->termscript) |
| 853 | fwrite (conversion_buffer, 1, coding->produced, tty->termscript); |
| 854 | unblock_input (); |
| 855 | } |
| 856 | |
| 857 | /* Turn appearance modes off. */ |
| 858 | turn_off_face (f, face_id); |
| 859 | tty_turn_off_highlight (tty); |
| 860 | |
| 861 | cmcheckmagic (tty); |
| 862 | } |
| 863 | #endif |
| 864 | |
| 865 | /* An implementation of insert_glyphs for termcap frames. */ |
| 866 | |
| 867 | static void |
| 868 | tty_insert_glyphs (struct frame *f, struct glyph *start, int len) |
| 869 | { |
| 870 | char *buf; |
| 871 | struct glyph *glyph = NULL; |
| 872 | unsigned char *conversion_buffer; |
| 873 | unsigned char space[1]; |
| 874 | struct coding_system *coding; |
| 875 | |
| 876 | struct tty_display_info *tty = FRAME_TTY (f); |
| 877 | |
| 878 | if (tty->TS_ins_multi_chars) |
| 879 | { |
| 880 | buf = tparam (tty->TS_ins_multi_chars, 0, 0, len, 0, 0, 0); |
| 881 | OUTPUT1 (tty, buf); |
| 882 | xfree (buf); |
| 883 | if (start) |
| 884 | write_glyphs (f, start, len); |
| 885 | return; |
| 886 | } |
| 887 | |
| 888 | tty_turn_on_insert (tty); |
| 889 | cmplus (tty, len); |
| 890 | |
| 891 | if (! start) |
| 892 | space[0] = SPACEGLYPH; |
| 893 | |
| 894 | /* If terminal_coding does any conversion, use it, otherwise use |
| 895 | safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here |
| 896 | because it always return 1 if the member src_multibyte is 1. */ |
| 897 | coding = (FRAME_TERMINAL_CODING (f)->common_flags & CODING_REQUIRE_ENCODING_MASK |
| 898 | ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding); |
| 899 | /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at |
| 900 | the tail. */ |
| 901 | coding->mode &= ~CODING_MODE_LAST_BLOCK; |
| 902 | |
| 903 | while (len-- > 0) |
| 904 | { |
| 905 | OUTPUT1_IF (tty, tty->TS_ins_char); |
| 906 | if (!start) |
| 907 | { |
| 908 | conversion_buffer = space; |
| 909 | coding->produced = 1; |
| 910 | } |
| 911 | else |
| 912 | { |
| 913 | tty_highlight_if_desired (tty); |
| 914 | turn_on_face (f, start->face_id); |
| 915 | glyph = start; |
| 916 | ++start; |
| 917 | /* We must open sufficient space for a character which |
| 918 | occupies more than one column. */ |
| 919 | while (len && CHAR_GLYPH_PADDING_P (*start)) |
| 920 | { |
| 921 | OUTPUT1_IF (tty, tty->TS_ins_char); |
| 922 | start++, len--; |
| 923 | } |
| 924 | |
| 925 | if (len <= 0) |
| 926 | /* This is the last glyph. */ |
| 927 | coding->mode |= CODING_MODE_LAST_BLOCK; |
| 928 | |
| 929 | conversion_buffer = encode_terminal_code (glyph, 1, coding); |
| 930 | } |
| 931 | |
| 932 | if (coding->produced > 0) |
| 933 | { |
| 934 | block_input (); |
| 935 | fwrite (conversion_buffer, 1, coding->produced, tty->output); |
| 936 | if (ferror (tty->output)) |
| 937 | clearerr (tty->output); |
| 938 | if (tty->termscript) |
| 939 | fwrite (conversion_buffer, 1, coding->produced, tty->termscript); |
| 940 | unblock_input (); |
| 941 | } |
| 942 | |
| 943 | OUTPUT1_IF (tty, tty->TS_pad_inserted_char); |
| 944 | if (start) |
| 945 | { |
| 946 | turn_off_face (f, glyph->face_id); |
| 947 | tty_turn_off_highlight (tty); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | cmcheckmagic (tty); |
| 952 | } |
| 953 | |
| 954 | /* An implementation of delete_glyphs for termcap frames. */ |
| 955 | |
| 956 | static void |
| 957 | tty_delete_glyphs (struct frame *f, int n) |
| 958 | { |
| 959 | char *buf; |
| 960 | register int i; |
| 961 | |
| 962 | struct tty_display_info *tty = FRAME_TTY (f); |
| 963 | |
| 964 | if (tty->delete_in_insert_mode) |
| 965 | { |
| 966 | tty_turn_on_insert (tty); |
| 967 | } |
| 968 | else |
| 969 | { |
| 970 | tty_turn_off_insert (tty); |
| 971 | OUTPUT_IF (tty, tty->TS_delete_mode); |
| 972 | } |
| 973 | |
| 974 | if (tty->TS_del_multi_chars) |
| 975 | { |
| 976 | buf = tparam (tty->TS_del_multi_chars, 0, 0, n, 0, 0, 0); |
| 977 | OUTPUT1 (tty, buf); |
| 978 | xfree (buf); |
| 979 | } |
| 980 | else |
| 981 | for (i = 0; i < n; i++) |
| 982 | OUTPUT1 (tty, tty->TS_del_char); |
| 983 | if (!tty->delete_in_insert_mode) |
| 984 | OUTPUT_IF (tty, tty->TS_end_delete_mode); |
| 985 | } |
| 986 | \f |
| 987 | /* An implementation of ins_del_lines for termcap frames. */ |
| 988 | |
| 989 | static void |
| 990 | tty_ins_del_lines (struct frame *f, int vpos, int n) |
| 991 | { |
| 992 | struct tty_display_info *tty = FRAME_TTY (f); |
| 993 | const char *multi = |
| 994 | n > 0 ? tty->TS_ins_multi_lines : tty->TS_del_multi_lines; |
| 995 | const char *single = n > 0 ? tty->TS_ins_line : tty->TS_del_line; |
| 996 | const char *scroll = n > 0 ? tty->TS_rev_scroll : tty->TS_fwd_scroll; |
| 997 | |
| 998 | int i = eabs (n); |
| 999 | char *buf; |
| 1000 | |
| 1001 | /* If the lines below the insertion are being pushed |
| 1002 | into the end of the window, this is the same as clearing; |
| 1003 | and we know the lines are already clear, since the matching |
| 1004 | deletion has already been done. So can ignore this. */ |
| 1005 | /* If the lines below the deletion are blank lines coming |
| 1006 | out of the end of the window, don't bother, |
| 1007 | as there will be a matching inslines later that will flush them. */ |
| 1008 | if (FRAME_SCROLL_REGION_OK (f) |
| 1009 | && vpos + i >= tty->specified_window) |
| 1010 | return; |
| 1011 | if (!FRAME_MEMORY_BELOW_FRAME (f) |
| 1012 | && vpos + i >= FRAME_LINES (f)) |
| 1013 | return; |
| 1014 | |
| 1015 | if (multi) |
| 1016 | { |
| 1017 | raw_cursor_to (f, vpos, 0); |
| 1018 | tty_background_highlight (tty); |
| 1019 | buf = tparam (multi, 0, 0, i, 0, 0, 0); |
| 1020 | OUTPUT (tty, buf); |
| 1021 | xfree (buf); |
| 1022 | } |
| 1023 | else if (single) |
| 1024 | { |
| 1025 | raw_cursor_to (f, vpos, 0); |
| 1026 | tty_background_highlight (tty); |
| 1027 | while (--i >= 0) |
| 1028 | OUTPUT (tty, single); |
| 1029 | if (tty->TF_teleray) |
| 1030 | curX (tty) = 0; |
| 1031 | } |
| 1032 | else |
| 1033 | { |
| 1034 | tty_set_scroll_region (f, vpos, tty->specified_window); |
| 1035 | if (n < 0) |
| 1036 | raw_cursor_to (f, tty->specified_window - 1, 0); |
| 1037 | else |
| 1038 | raw_cursor_to (f, vpos, 0); |
| 1039 | tty_background_highlight (tty); |
| 1040 | while (--i >= 0) |
| 1041 | OUTPUTL (tty, scroll, tty->specified_window - vpos); |
| 1042 | tty_set_scroll_region (f, 0, tty->specified_window); |
| 1043 | } |
| 1044 | |
| 1045 | if (!FRAME_SCROLL_REGION_OK (f) |
| 1046 | && FRAME_MEMORY_BELOW_FRAME (f) |
| 1047 | && n < 0) |
| 1048 | { |
| 1049 | cursor_to (f, FRAME_LINES (f) + n, 0); |
| 1050 | clear_to_end (f); |
| 1051 | } |
| 1052 | } |
| 1053 | \f |
| 1054 | /* Compute cost of sending "str", in characters, |
| 1055 | not counting any line-dependent padding. */ |
| 1056 | |
| 1057 | int |
| 1058 | string_cost (const char *str) |
| 1059 | { |
| 1060 | cost = 0; |
| 1061 | if (str) |
| 1062 | tputs (str, 0, evalcost); |
| 1063 | return cost; |
| 1064 | } |
| 1065 | |
| 1066 | /* Compute cost of sending "str", in characters, |
| 1067 | counting any line-dependent padding at one line. */ |
| 1068 | |
| 1069 | static int |
| 1070 | string_cost_one_line (const char *str) |
| 1071 | { |
| 1072 | cost = 0; |
| 1073 | if (str) |
| 1074 | tputs (str, 1, evalcost); |
| 1075 | return cost; |
| 1076 | } |
| 1077 | |
| 1078 | /* Compute per line amount of line-dependent padding, |
| 1079 | in tenths of characters. */ |
| 1080 | |
| 1081 | int |
| 1082 | per_line_cost (const char *str) |
| 1083 | { |
| 1084 | cost = 0; |
| 1085 | if (str) |
| 1086 | tputs (str, 0, evalcost); |
| 1087 | cost = - cost; |
| 1088 | if (str) |
| 1089 | tputs (str, 10, evalcost); |
| 1090 | return cost; |
| 1091 | } |
| 1092 | |
| 1093 | /* char_ins_del_cost[n] is cost of inserting N characters. |
| 1094 | char_ins_del_cost[-n] is cost of deleting N characters. |
| 1095 | The length of this vector is based on max_frame_cols. */ |
| 1096 | |
| 1097 | int *char_ins_del_vector; |
| 1098 | |
| 1099 | #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_COLS ((f))]) |
| 1100 | |
| 1101 | /* ARGSUSED */ |
| 1102 | static void |
| 1103 | calculate_ins_del_char_costs (struct frame *f) |
| 1104 | { |
| 1105 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1106 | int ins_startup_cost, del_startup_cost; |
| 1107 | int ins_cost_per_char, del_cost_per_char; |
| 1108 | register int i; |
| 1109 | register int *p; |
| 1110 | |
| 1111 | if (tty->TS_ins_multi_chars) |
| 1112 | { |
| 1113 | ins_cost_per_char = 0; |
| 1114 | ins_startup_cost = string_cost_one_line (tty->TS_ins_multi_chars); |
| 1115 | } |
| 1116 | else if (tty->TS_ins_char || tty->TS_pad_inserted_char |
| 1117 | || (tty->TS_insert_mode && tty->TS_end_insert_mode)) |
| 1118 | { |
| 1119 | ins_startup_cost = (30 * (string_cost (tty->TS_insert_mode) |
| 1120 | + string_cost (tty->TS_end_insert_mode))) / 100; |
| 1121 | ins_cost_per_char = (string_cost_one_line (tty->TS_ins_char) |
| 1122 | + string_cost_one_line (tty->TS_pad_inserted_char)); |
| 1123 | } |
| 1124 | else |
| 1125 | { |
| 1126 | ins_startup_cost = 9999; |
| 1127 | ins_cost_per_char = 0; |
| 1128 | } |
| 1129 | |
| 1130 | if (tty->TS_del_multi_chars) |
| 1131 | { |
| 1132 | del_cost_per_char = 0; |
| 1133 | del_startup_cost = string_cost_one_line (tty->TS_del_multi_chars); |
| 1134 | } |
| 1135 | else if (tty->TS_del_char) |
| 1136 | { |
| 1137 | del_startup_cost = (string_cost (tty->TS_delete_mode) |
| 1138 | + string_cost (tty->TS_end_delete_mode)); |
| 1139 | if (tty->delete_in_insert_mode) |
| 1140 | del_startup_cost /= 2; |
| 1141 | del_cost_per_char = string_cost_one_line (tty->TS_del_char); |
| 1142 | } |
| 1143 | else |
| 1144 | { |
| 1145 | del_startup_cost = 9999; |
| 1146 | del_cost_per_char = 0; |
| 1147 | } |
| 1148 | |
| 1149 | /* Delete costs are at negative offsets */ |
| 1150 | p = &char_ins_del_cost (f)[0]; |
| 1151 | for (i = FRAME_COLS (f); --i >= 0;) |
| 1152 | *--p = (del_startup_cost += del_cost_per_char); |
| 1153 | |
| 1154 | /* Doing nothing is free */ |
| 1155 | p = &char_ins_del_cost (f)[0]; |
| 1156 | *p++ = 0; |
| 1157 | |
| 1158 | /* Insert costs are at positive offsets */ |
| 1159 | for (i = FRAME_COLS (f); --i >= 0;) |
| 1160 | *p++ = (ins_startup_cost += ins_cost_per_char); |
| 1161 | } |
| 1162 | |
| 1163 | void |
| 1164 | calculate_costs (struct frame *frame) |
| 1165 | { |
| 1166 | FRAME_COST_BAUD_RATE (frame) = baud_rate; |
| 1167 | |
| 1168 | if (FRAME_TERMCAP_P (frame)) |
| 1169 | { |
| 1170 | struct tty_display_info *tty = FRAME_TTY (frame); |
| 1171 | register const char *f = (tty->TS_set_scroll_region |
| 1172 | ? tty->TS_set_scroll_region |
| 1173 | : tty->TS_set_scroll_region_1); |
| 1174 | |
| 1175 | FRAME_SCROLL_REGION_COST (frame) = string_cost (f); |
| 1176 | |
| 1177 | tty->costs_set = 1; |
| 1178 | |
| 1179 | /* These variables are only used for terminal stuff. They are |
| 1180 | allocated once for the terminal frame of X-windows emacs, but not |
| 1181 | used afterwards. |
| 1182 | |
| 1183 | char_ins_del_vector (i.e., char_ins_del_cost) isn't used because |
| 1184 | X turns off char_ins_del_ok. */ |
| 1185 | |
| 1186 | max_frame_cols = max (max_frame_cols, FRAME_COLS (frame)); |
| 1187 | if ((min (PTRDIFF_MAX, SIZE_MAX) / sizeof (int) - 1) / 2 |
| 1188 | < max_frame_cols) |
| 1189 | memory_full (SIZE_MAX); |
| 1190 | |
| 1191 | char_ins_del_vector = |
| 1192 | xrealloc (char_ins_del_vector, |
| 1193 | (sizeof (int) + 2 * sizeof (int) * max_frame_cols)); |
| 1194 | |
| 1195 | memset (char_ins_del_vector, 0, |
| 1196 | (sizeof (int) + 2 * sizeof (int) * max_frame_cols)); |
| 1197 | |
| 1198 | |
| 1199 | if (f && (!tty->TS_ins_line && !tty->TS_del_line)) |
| 1200 | do_line_insertion_deletion_costs (frame, |
| 1201 | tty->TS_rev_scroll, tty->TS_ins_multi_lines, |
| 1202 | tty->TS_fwd_scroll, tty->TS_del_multi_lines, |
| 1203 | f, f, 1); |
| 1204 | else |
| 1205 | do_line_insertion_deletion_costs (frame, |
| 1206 | tty->TS_ins_line, tty->TS_ins_multi_lines, |
| 1207 | tty->TS_del_line, tty->TS_del_multi_lines, |
| 1208 | 0, 0, 1); |
| 1209 | |
| 1210 | calculate_ins_del_char_costs (frame); |
| 1211 | |
| 1212 | /* Don't use TS_repeat if its padding is worse than sending the chars */ |
| 1213 | if (tty->TS_repeat && per_line_cost (tty->TS_repeat) * baud_rate < 9000) |
| 1214 | tty->RPov = string_cost (tty->TS_repeat); |
| 1215 | else |
| 1216 | tty->RPov = FRAME_COLS (frame) * 2; |
| 1217 | |
| 1218 | cmcostinit (FRAME_TTY (frame)); /* set up cursor motion costs */ |
| 1219 | } |
| 1220 | } |
| 1221 | \f |
| 1222 | struct fkey_table { |
| 1223 | const char *cap, *name; |
| 1224 | }; |
| 1225 | |
| 1226 | /* Termcap capability names that correspond directly to X keysyms. |
| 1227 | Some of these (marked "terminfo") aren't supplied by old-style |
| 1228 | (Berkeley) termcap entries. They're listed in X keysym order; |
| 1229 | except we put the keypad keys first, so that if they clash with |
| 1230 | other keys (as on the IBM PC keyboard) they get overridden. |
| 1231 | */ |
| 1232 | |
| 1233 | static const struct fkey_table keys[] = |
| 1234 | { |
| 1235 | {"kh", "home"}, /* termcap */ |
| 1236 | {"kl", "left"}, /* termcap */ |
| 1237 | {"ku", "up"}, /* termcap */ |
| 1238 | {"kr", "right"}, /* termcap */ |
| 1239 | {"kd", "down"}, /* termcap */ |
| 1240 | {"%8", "prior"}, /* terminfo */ |
| 1241 | {"%5", "next"}, /* terminfo */ |
| 1242 | {"@7", "end"}, /* terminfo */ |
| 1243 | {"@1", "begin"}, /* terminfo */ |
| 1244 | {"*6", "select"}, /* terminfo */ |
| 1245 | {"%9", "print"}, /* terminfo */ |
| 1246 | {"@4", "execute"}, /* terminfo --- actually the `command' key */ |
| 1247 | /* |
| 1248 | * "insert" --- see below |
| 1249 | */ |
| 1250 | {"&8", "undo"}, /* terminfo */ |
| 1251 | {"%0", "redo"}, /* terminfo */ |
| 1252 | {"%7", "menu"}, /* terminfo --- actually the `options' key */ |
| 1253 | {"@0", "find"}, /* terminfo */ |
| 1254 | {"@2", "cancel"}, /* terminfo */ |
| 1255 | {"%1", "help"}, /* terminfo */ |
| 1256 | /* |
| 1257 | * "break" goes here, but can't be reliably intercepted with termcap |
| 1258 | */ |
| 1259 | {"&4", "reset"}, /* terminfo --- actually `restart' */ |
| 1260 | /* |
| 1261 | * "system" and "user" --- no termcaps |
| 1262 | */ |
| 1263 | {"kE", "clearline"}, /* terminfo */ |
| 1264 | {"kA", "insertline"}, /* terminfo */ |
| 1265 | {"kL", "deleteline"}, /* terminfo */ |
| 1266 | {"kI", "insertchar"}, /* terminfo */ |
| 1267 | {"kD", "deletechar"}, /* terminfo */ |
| 1268 | {"kB", "backtab"}, /* terminfo */ |
| 1269 | /* |
| 1270 | * "kp_backtab", "kp-space", "kp-tab" --- no termcaps |
| 1271 | */ |
| 1272 | {"@8", "kp-enter"}, /* terminfo */ |
| 1273 | /* |
| 1274 | * "kp-f1", "kp-f2", "kp-f3" "kp-f4", |
| 1275 | * "kp-multiply", "kp-add", "kp-separator", |
| 1276 | * "kp-subtract", "kp-decimal", "kp-divide", "kp-0"; |
| 1277 | * --- no termcaps for any of these. |
| 1278 | */ |
| 1279 | {"K4", "kp-1"}, /* terminfo */ |
| 1280 | /* |
| 1281 | * "kp-2" --- no termcap |
| 1282 | */ |
| 1283 | {"K5", "kp-3"}, /* terminfo */ |
| 1284 | /* |
| 1285 | * "kp-4" --- no termcap |
| 1286 | */ |
| 1287 | {"K2", "kp-5"}, /* terminfo */ |
| 1288 | /* |
| 1289 | * "kp-6" --- no termcap |
| 1290 | */ |
| 1291 | {"K1", "kp-7"}, /* terminfo */ |
| 1292 | /* |
| 1293 | * "kp-8" --- no termcap |
| 1294 | */ |
| 1295 | {"K3", "kp-9"}, /* terminfo */ |
| 1296 | /* |
| 1297 | * "kp-equal" --- no termcap |
| 1298 | */ |
| 1299 | {"k1", "f1"}, |
| 1300 | {"k2", "f2"}, |
| 1301 | {"k3", "f3"}, |
| 1302 | {"k4", "f4"}, |
| 1303 | {"k5", "f5"}, |
| 1304 | {"k6", "f6"}, |
| 1305 | {"k7", "f7"}, |
| 1306 | {"k8", "f8"}, |
| 1307 | {"k9", "f9"}, |
| 1308 | |
| 1309 | {"&0", "S-cancel"}, /*shifted cancel key*/ |
| 1310 | {"&9", "S-begin"}, /*shifted begin key*/ |
| 1311 | {"*0", "S-find"}, /*shifted find key*/ |
| 1312 | {"*1", "S-execute"}, /*shifted execute? actually shifted command key*/ |
| 1313 | {"*4", "S-delete"}, /*shifted delete-character key*/ |
| 1314 | {"*7", "S-end"}, /*shifted end key*/ |
| 1315 | {"*8", "S-clearline"}, /*shifted clear-to end-of-line key*/ |
| 1316 | {"#1", "S-help"}, /*shifted help key*/ |
| 1317 | {"#2", "S-home"}, /*shifted home key*/ |
| 1318 | {"#3", "S-insert"}, /*shifted insert-character key*/ |
| 1319 | {"#4", "S-left"}, /*shifted left-arrow key*/ |
| 1320 | {"%d", "S-menu"}, /*shifted menu? actually shifted options key*/ |
| 1321 | {"%c", "S-next"}, /*shifted next key*/ |
| 1322 | {"%e", "S-prior"}, /*shifted previous key*/ |
| 1323 | {"%f", "S-print"}, /*shifted print key*/ |
| 1324 | {"%g", "S-redo"}, /*shifted redo key*/ |
| 1325 | {"%i", "S-right"}, /*shifted right-arrow key*/ |
| 1326 | {"!3", "S-undo"} /*shifted undo key*/ |
| 1327 | }; |
| 1328 | |
| 1329 | #ifndef DOS_NT |
| 1330 | static char **term_get_fkeys_address; |
| 1331 | static KBOARD *term_get_fkeys_kboard; |
| 1332 | static Lisp_Object term_get_fkeys_1 (void); |
| 1333 | |
| 1334 | /* Find the escape codes sent by the function keys for Vinput_decode_map. |
| 1335 | This function scans the termcap function key sequence entries, and |
| 1336 | adds entries to Vinput_decode_map for each function key it finds. */ |
| 1337 | |
| 1338 | static void |
| 1339 | term_get_fkeys (char **address, KBOARD *kboard) |
| 1340 | { |
| 1341 | /* We run the body of the function (term_get_fkeys_1) and ignore all Lisp |
| 1342 | errors during the call. The only errors should be from Fdefine_key |
| 1343 | when given a key sequence containing an invalid prefix key. If the |
| 1344 | termcap defines function keys which use a prefix that is already bound |
| 1345 | to a command by the default bindings, we should silently ignore that |
| 1346 | function key specification, rather than giving the user an error and |
| 1347 | refusing to run at all on such a terminal. */ |
| 1348 | |
| 1349 | term_get_fkeys_address = address; |
| 1350 | term_get_fkeys_kboard = kboard; |
| 1351 | internal_condition_case (term_get_fkeys_1, Qerror, Fidentity); |
| 1352 | } |
| 1353 | |
| 1354 | static Lisp_Object |
| 1355 | term_get_fkeys_1 (void) |
| 1356 | { |
| 1357 | int i; |
| 1358 | |
| 1359 | char **address = term_get_fkeys_address; |
| 1360 | KBOARD *kboard = term_get_fkeys_kboard; |
| 1361 | |
| 1362 | /* This can happen if CANNOT_DUMP or with strange options. */ |
| 1363 | if (!KEYMAPP (KVAR (kboard, Vinput_decode_map))) |
| 1364 | kset_input_decode_map (kboard, Fmake_sparse_keymap (Qnil)); |
| 1365 | |
| 1366 | for (i = 0; i < ARRAYELTS (keys); i++) |
| 1367 | { |
| 1368 | char *sequence = tgetstr (keys[i].cap, address); |
| 1369 | if (sequence) |
| 1370 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (sequence), |
| 1371 | Fmake_vector (make_number (1), |
| 1372 | intern (keys[i].name))); |
| 1373 | } |
| 1374 | |
| 1375 | /* The uses of the "k0" capability are inconsistent; sometimes it |
| 1376 | describes F10, whereas othertimes it describes F0 and "k;" describes F10. |
| 1377 | We will attempt to politely accommodate both systems by testing for |
| 1378 | "k;", and if it is present, assuming that "k0" denotes F0, otherwise F10. |
| 1379 | */ |
| 1380 | { |
| 1381 | const char *k_semi = tgetstr ("k;", address); |
| 1382 | const char *k0 = tgetstr ("k0", address); |
| 1383 | const char *k0_name = "f10"; |
| 1384 | |
| 1385 | if (k_semi) |
| 1386 | { |
| 1387 | if (k0) |
| 1388 | /* Define f0 first, so that f10 takes precedence in case the |
| 1389 | key sequences happens to be the same. */ |
| 1390 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (k0), |
| 1391 | Fmake_vector (make_number (1), intern ("f0"))); |
| 1392 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (k_semi), |
| 1393 | Fmake_vector (make_number (1), intern ("f10"))); |
| 1394 | } |
| 1395 | else if (k0) |
| 1396 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (k0), |
| 1397 | Fmake_vector (make_number (1), intern (k0_name))); |
| 1398 | } |
| 1399 | |
| 1400 | /* Set up cookies for numbered function keys above f10. */ |
| 1401 | { |
| 1402 | char fcap[3], fkey[4]; |
| 1403 | |
| 1404 | fcap[0] = 'F'; fcap[2] = '\0'; |
| 1405 | for (i = 11; i < 64; i++) |
| 1406 | { |
| 1407 | if (i <= 19) |
| 1408 | fcap[1] = '1' + i - 11; |
| 1409 | else if (i <= 45) |
| 1410 | fcap[1] = 'A' + i - 20; |
| 1411 | else |
| 1412 | fcap[1] = 'a' + i - 46; |
| 1413 | |
| 1414 | { |
| 1415 | char *sequence = tgetstr (fcap, address); |
| 1416 | if (sequence) |
| 1417 | { |
| 1418 | sprintf (fkey, "f%d", i); |
| 1419 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (sequence), |
| 1420 | Fmake_vector (make_number (1), |
| 1421 | intern (fkey))); |
| 1422 | } |
| 1423 | } |
| 1424 | } |
| 1425 | } |
| 1426 | |
| 1427 | /* |
| 1428 | * Various mappings to try and get a better fit. |
| 1429 | */ |
| 1430 | { |
| 1431 | #define CONDITIONAL_REASSIGN(cap1, cap2, sym) \ |
| 1432 | if (!tgetstr (cap1, address)) \ |
| 1433 | { \ |
| 1434 | char *sequence = tgetstr (cap2, address); \ |
| 1435 | if (sequence) \ |
| 1436 | Fdefine_key (KVAR (kboard, Vinput_decode_map), build_string (sequence), \ |
| 1437 | Fmake_vector (make_number (1), \ |
| 1438 | intern (sym))); \ |
| 1439 | } |
| 1440 | |
| 1441 | /* if there's no key_next keycap, map key_npage to `next' keysym */ |
| 1442 | CONDITIONAL_REASSIGN ("%5", "kN", "next"); |
| 1443 | /* if there's no key_prev keycap, map key_ppage to `previous' keysym */ |
| 1444 | CONDITIONAL_REASSIGN ("%8", "kP", "prior"); |
| 1445 | /* if there's no key_dc keycap, map key_ic to `insert' keysym */ |
| 1446 | CONDITIONAL_REASSIGN ("kD", "kI", "insert"); |
| 1447 | /* if there's no key_end keycap, map key_ll to 'end' keysym */ |
| 1448 | CONDITIONAL_REASSIGN ("@7", "kH", "end"); |
| 1449 | #undef CONDITIONAL_REASSIGN |
| 1450 | } |
| 1451 | |
| 1452 | return Qnil; |
| 1453 | } |
| 1454 | #endif /* not DOS_NT */ |
| 1455 | |
| 1456 | \f |
| 1457 | /*********************************************************************** |
| 1458 | Character Display Information |
| 1459 | ***********************************************************************/ |
| 1460 | static void append_glyph (struct it *); |
| 1461 | static void append_composite_glyph (struct it *); |
| 1462 | static void produce_composite_glyph (struct it *); |
| 1463 | static void append_glyphless_glyph (struct it *, int, const char *); |
| 1464 | static void produce_glyphless_glyph (struct it *, Lisp_Object); |
| 1465 | |
| 1466 | /* Append glyphs to IT's glyph_row. Called from produce_glyphs for |
| 1467 | terminal frames if IT->glyph_row != NULL. IT->char_to_display is |
| 1468 | the character for which to produce glyphs; IT->face_id contains the |
| 1469 | character's face. Padding glyphs are appended if IT->c has a |
| 1470 | IT->pixel_width > 1. */ |
| 1471 | |
| 1472 | static void |
| 1473 | append_glyph (struct it *it) |
| 1474 | { |
| 1475 | struct glyph *glyph, *end; |
| 1476 | int i; |
| 1477 | |
| 1478 | eassert (it->glyph_row); |
| 1479 | glyph = (it->glyph_row->glyphs[it->area] |
| 1480 | + it->glyph_row->used[it->area]); |
| 1481 | end = it->glyph_row->glyphs[1 + it->area]; |
| 1482 | |
| 1483 | /* If the glyph row is reversed, we need to prepend the glyph rather |
| 1484 | than append it. */ |
| 1485 | if (it->glyph_row->reversed_p && it->area == TEXT_AREA) |
| 1486 | { |
| 1487 | struct glyph *g; |
| 1488 | int move_by = it->pixel_width; |
| 1489 | |
| 1490 | /* Make room for the new glyphs. */ |
| 1491 | if (move_by > end - glyph) /* don't overstep end of this area */ |
| 1492 | move_by = end - glyph; |
| 1493 | for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--) |
| 1494 | g[move_by] = *g; |
| 1495 | glyph = it->glyph_row->glyphs[it->area]; |
| 1496 | end = glyph + move_by; |
| 1497 | } |
| 1498 | |
| 1499 | /* BIDI Note: we put the glyphs of a "multi-pixel" character left to |
| 1500 | right, even in the REVERSED_P case, since (a) all of its u.ch are |
| 1501 | identical, and (b) the PADDING_P flag needs to be set for the |
| 1502 | leftmost one, because we write to the terminal left-to-right. */ |
| 1503 | for (i = 0; |
| 1504 | i < it->pixel_width && glyph < end; |
| 1505 | ++i) |
| 1506 | { |
| 1507 | glyph->type = CHAR_GLYPH; |
| 1508 | glyph->pixel_width = 1; |
| 1509 | glyph->u.ch = it->char_to_display; |
| 1510 | glyph->face_id = it->face_id; |
| 1511 | glyph->padding_p = i > 0; |
| 1512 | glyph->charpos = CHARPOS (it->position); |
| 1513 | glyph->object = it->object; |
| 1514 | if (it->bidi_p) |
| 1515 | { |
| 1516 | glyph->resolved_level = it->bidi_it.resolved_level; |
| 1517 | if ((it->bidi_it.type & 7) != it->bidi_it.type) |
| 1518 | emacs_abort (); |
| 1519 | glyph->bidi_type = it->bidi_it.type; |
| 1520 | } |
| 1521 | else |
| 1522 | { |
| 1523 | glyph->resolved_level = 0; |
| 1524 | glyph->bidi_type = UNKNOWN_BT; |
| 1525 | } |
| 1526 | |
| 1527 | ++it->glyph_row->used[it->area]; |
| 1528 | ++glyph; |
| 1529 | } |
| 1530 | } |
| 1531 | |
| 1532 | /* For external use. */ |
| 1533 | void |
| 1534 | tty_append_glyph (struct it *it) |
| 1535 | { |
| 1536 | append_glyph (it); |
| 1537 | } |
| 1538 | |
| 1539 | |
| 1540 | /* Produce glyphs for the display element described by IT. *IT |
| 1541 | specifies what we want to produce a glyph for (character, image, ...), |
| 1542 | and where in the glyph matrix we currently are (glyph row and hpos). |
| 1543 | produce_glyphs fills in output fields of *IT with information such as the |
| 1544 | pixel width and height of a character, and maybe output actual glyphs at |
| 1545 | the same time if IT->glyph_row is non-null. For an overview, see |
| 1546 | the explanation in dispextern.h, before the definition of the |
| 1547 | display_element_type enumeration. |
| 1548 | |
| 1549 | produce_glyphs also stores the result of glyph width, ascent |
| 1550 | etc. computations in *IT. |
| 1551 | |
| 1552 | IT->glyph_row may be null, in which case produce_glyphs does not |
| 1553 | actually fill in the glyphs. This is used in the move_* functions |
| 1554 | in xdisp.c for text width and height computations. |
| 1555 | |
| 1556 | Callers usually don't call produce_glyphs directly; |
| 1557 | instead they use the macro PRODUCE_GLYPHS. */ |
| 1558 | |
| 1559 | void |
| 1560 | produce_glyphs (struct it *it) |
| 1561 | { |
| 1562 | /* If a hook is installed, let it do the work. */ |
| 1563 | |
| 1564 | /* Nothing but characters are supported on terminal frames. */ |
| 1565 | eassert (it->what == IT_CHARACTER |
| 1566 | || it->what == IT_COMPOSITION |
| 1567 | || it->what == IT_STRETCH |
| 1568 | || it->what == IT_GLYPHLESS); |
| 1569 | |
| 1570 | if (it->what == IT_STRETCH) |
| 1571 | { |
| 1572 | produce_stretch_glyph (it); |
| 1573 | goto done; |
| 1574 | } |
| 1575 | |
| 1576 | if (it->what == IT_COMPOSITION) |
| 1577 | { |
| 1578 | produce_composite_glyph (it); |
| 1579 | goto done; |
| 1580 | } |
| 1581 | |
| 1582 | if (it->what == IT_GLYPHLESS) |
| 1583 | { |
| 1584 | produce_glyphless_glyph (it, Qnil); |
| 1585 | goto done; |
| 1586 | } |
| 1587 | |
| 1588 | if (it->char_to_display >= 040 && it->char_to_display < 0177) |
| 1589 | { |
| 1590 | it->pixel_width = it->nglyphs = 1; |
| 1591 | if (it->glyph_row) |
| 1592 | append_glyph (it); |
| 1593 | } |
| 1594 | else if (it->char_to_display == '\n') |
| 1595 | it->pixel_width = it->nglyphs = 0; |
| 1596 | else if (it->char_to_display == '\t') |
| 1597 | { |
| 1598 | int absolute_x = (it->current_x |
| 1599 | + it->continuation_lines_width); |
| 1600 | int next_tab_x |
| 1601 | = (((1 + absolute_x + it->tab_width - 1) |
| 1602 | / it->tab_width) |
| 1603 | * it->tab_width); |
| 1604 | int nspaces; |
| 1605 | |
| 1606 | /* If part of the TAB has been displayed on the previous line |
| 1607 | which is continued now, continuation_lines_width will have |
| 1608 | been incremented already by the part that fitted on the |
| 1609 | continued line. So, we will get the right number of spaces |
| 1610 | here. */ |
| 1611 | nspaces = next_tab_x - absolute_x; |
| 1612 | |
| 1613 | if (it->glyph_row) |
| 1614 | { |
| 1615 | int n = nspaces; |
| 1616 | |
| 1617 | it->char_to_display = ' '; |
| 1618 | it->pixel_width = it->len = 1; |
| 1619 | |
| 1620 | while (n--) |
| 1621 | append_glyph (it); |
| 1622 | } |
| 1623 | |
| 1624 | it->pixel_width = nspaces; |
| 1625 | it->nglyphs = nspaces; |
| 1626 | } |
| 1627 | else if (CHAR_BYTE8_P (it->char_to_display)) |
| 1628 | { |
| 1629 | /* Coming here means that we must send the raw 8-bit byte as is |
| 1630 | to the terminal. Although there's no way to know how many |
| 1631 | columns it occupies on a screen, it is a good assumption that |
| 1632 | a single byte code has 1-column width. */ |
| 1633 | it->pixel_width = it->nglyphs = 1; |
| 1634 | if (it->glyph_row) |
| 1635 | append_glyph (it); |
| 1636 | } |
| 1637 | else |
| 1638 | { |
| 1639 | Lisp_Object charset_list = FRAME_TERMINAL (it->f)->charset_list; |
| 1640 | |
| 1641 | if (char_charset (it->char_to_display, charset_list, NULL)) |
| 1642 | { |
| 1643 | it->pixel_width = CHAR_WIDTH (it->char_to_display); |
| 1644 | it->nglyphs = it->pixel_width; |
| 1645 | if (it->glyph_row) |
| 1646 | append_glyph (it); |
| 1647 | } |
| 1648 | else |
| 1649 | { |
| 1650 | Lisp_Object acronym = lookup_glyphless_char_display (-1, it); |
| 1651 | |
| 1652 | eassert (it->what == IT_GLYPHLESS); |
| 1653 | produce_glyphless_glyph (it, acronym); |
| 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | done: |
| 1658 | /* Advance current_x by the pixel width as a convenience for |
| 1659 | the caller. */ |
| 1660 | if (it->area == TEXT_AREA) |
| 1661 | it->current_x += it->pixel_width; |
| 1662 | it->ascent = it->max_ascent = it->phys_ascent = it->max_phys_ascent = 0; |
| 1663 | it->descent = it->max_descent = it->phys_descent = it->max_phys_descent = 1; |
| 1664 | } |
| 1665 | |
| 1666 | /* Append glyphs to IT's glyph_row for the composition IT->cmp_id. |
| 1667 | Called from produce_composite_glyph for terminal frames if |
| 1668 | IT->glyph_row != NULL. IT->face_id contains the character's |
| 1669 | face. */ |
| 1670 | |
| 1671 | static void |
| 1672 | append_composite_glyph (struct it *it) |
| 1673 | { |
| 1674 | struct glyph *glyph; |
| 1675 | |
| 1676 | eassert (it->glyph_row); |
| 1677 | glyph = it->glyph_row->glyphs[it->area] + it->glyph_row->used[it->area]; |
| 1678 | if (glyph < it->glyph_row->glyphs[1 + it->area]) |
| 1679 | { |
| 1680 | /* If the glyph row is reversed, we need to prepend the glyph |
| 1681 | rather than append it. */ |
| 1682 | if (it->glyph_row->reversed_p && it->area == TEXT_AREA) |
| 1683 | { |
| 1684 | struct glyph *g; |
| 1685 | |
| 1686 | /* Make room for the new glyph. */ |
| 1687 | for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--) |
| 1688 | g[1] = *g; |
| 1689 | glyph = it->glyph_row->glyphs[it->area]; |
| 1690 | } |
| 1691 | glyph->type = COMPOSITE_GLYPH; |
| 1692 | glyph->pixel_width = it->pixel_width; |
| 1693 | glyph->u.cmp.id = it->cmp_it.id; |
| 1694 | if (it->cmp_it.ch < 0) |
| 1695 | { |
| 1696 | glyph->u.cmp.automatic = 0; |
| 1697 | glyph->u.cmp.id = it->cmp_it.id; |
| 1698 | } |
| 1699 | else |
| 1700 | { |
| 1701 | glyph->u.cmp.automatic = 1; |
| 1702 | glyph->u.cmp.id = it->cmp_it.id; |
| 1703 | glyph->slice.cmp.from = it->cmp_it.from; |
| 1704 | glyph->slice.cmp.to = it->cmp_it.to - 1; |
| 1705 | } |
| 1706 | |
| 1707 | glyph->face_id = it->face_id; |
| 1708 | glyph->padding_p = 0; |
| 1709 | glyph->charpos = CHARPOS (it->position); |
| 1710 | glyph->object = it->object; |
| 1711 | if (it->bidi_p) |
| 1712 | { |
| 1713 | glyph->resolved_level = it->bidi_it.resolved_level; |
| 1714 | if ((it->bidi_it.type & 7) != it->bidi_it.type) |
| 1715 | emacs_abort (); |
| 1716 | glyph->bidi_type = it->bidi_it.type; |
| 1717 | } |
| 1718 | else |
| 1719 | { |
| 1720 | glyph->resolved_level = 0; |
| 1721 | glyph->bidi_type = UNKNOWN_BT; |
| 1722 | } |
| 1723 | |
| 1724 | ++it->glyph_row->used[it->area]; |
| 1725 | ++glyph; |
| 1726 | } |
| 1727 | } |
| 1728 | |
| 1729 | |
| 1730 | /* Produce a composite glyph for iterator IT. IT->cmp_id is the ID of |
| 1731 | the composition. We simply produces components of the composition |
| 1732 | assuming that the terminal has a capability to layout/render it |
| 1733 | correctly. */ |
| 1734 | |
| 1735 | static void |
| 1736 | produce_composite_glyph (struct it *it) |
| 1737 | { |
| 1738 | if (it->cmp_it.ch < 0) |
| 1739 | { |
| 1740 | struct composition *cmp = composition_table[it->cmp_it.id]; |
| 1741 | |
| 1742 | it->pixel_width = cmp->width; |
| 1743 | } |
| 1744 | else |
| 1745 | { |
| 1746 | Lisp_Object gstring = composition_gstring_from_id (it->cmp_it.id); |
| 1747 | |
| 1748 | it->pixel_width = composition_gstring_width (gstring, it->cmp_it.from, |
| 1749 | it->cmp_it.to, NULL); |
| 1750 | } |
| 1751 | it->nglyphs = 1; |
| 1752 | if (it->glyph_row) |
| 1753 | append_composite_glyph (it); |
| 1754 | } |
| 1755 | |
| 1756 | |
| 1757 | /* Append a glyph for a glyphless character to IT->glyph_row. FACE_ID |
| 1758 | is a face ID to be used for the glyph. What is actually appended |
| 1759 | are glyphs of type CHAR_GLYPH whose characters are in STR (which |
| 1760 | comes from it->nglyphs bytes). */ |
| 1761 | |
| 1762 | static void |
| 1763 | append_glyphless_glyph (struct it *it, int face_id, const char *str) |
| 1764 | { |
| 1765 | struct glyph *glyph, *end; |
| 1766 | int i; |
| 1767 | |
| 1768 | eassert (it->glyph_row); |
| 1769 | glyph = it->glyph_row->glyphs[it->area] + it->glyph_row->used[it->area]; |
| 1770 | end = it->glyph_row->glyphs[1 + it->area]; |
| 1771 | |
| 1772 | /* If the glyph row is reversed, we need to prepend the glyph rather |
| 1773 | than append it. */ |
| 1774 | if (it->glyph_row->reversed_p && it->area == TEXT_AREA) |
| 1775 | { |
| 1776 | struct glyph *g; |
| 1777 | int move_by = it->pixel_width; |
| 1778 | |
| 1779 | /* Make room for the new glyphs. */ |
| 1780 | if (move_by > end - glyph) /* don't overstep end of this area */ |
| 1781 | move_by = end - glyph; |
| 1782 | for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--) |
| 1783 | g[move_by] = *g; |
| 1784 | glyph = it->glyph_row->glyphs[it->area]; |
| 1785 | end = glyph + move_by; |
| 1786 | } |
| 1787 | |
| 1788 | if (glyph >= end) |
| 1789 | return; |
| 1790 | glyph->type = CHAR_GLYPH; |
| 1791 | glyph->pixel_width = 1; |
| 1792 | glyph->face_id = face_id; |
| 1793 | glyph->padding_p = 0; |
| 1794 | glyph->charpos = CHARPOS (it->position); |
| 1795 | glyph->object = it->object; |
| 1796 | if (it->bidi_p) |
| 1797 | { |
| 1798 | glyph->resolved_level = it->bidi_it.resolved_level; |
| 1799 | if ((it->bidi_it.type & 7) != it->bidi_it.type) |
| 1800 | emacs_abort (); |
| 1801 | glyph->bidi_type = it->bidi_it.type; |
| 1802 | } |
| 1803 | else |
| 1804 | { |
| 1805 | glyph->resolved_level = 0; |
| 1806 | glyph->bidi_type = UNKNOWN_BT; |
| 1807 | } |
| 1808 | |
| 1809 | /* BIDI Note: we put the glyphs of characters left to right, even in |
| 1810 | the REVERSED_P case because we write to the terminal |
| 1811 | left-to-right. */ |
| 1812 | for (i = 0; i < it->nglyphs && glyph < end; ++i) |
| 1813 | { |
| 1814 | if (i > 0) |
| 1815 | glyph[0] = glyph[-1]; |
| 1816 | glyph->u.ch = str[i]; |
| 1817 | ++it->glyph_row->used[it->area]; |
| 1818 | ++glyph; |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | /* Produce glyphs for a glyphless character for iterator IT. |
| 1823 | IT->glyphless_method specifies which method to use for displaying |
| 1824 | the character. See the description of enum |
| 1825 | glyphless_display_method in dispextern.h for the details. |
| 1826 | |
| 1827 | ACRONYM, if non-nil, is an acronym string for the character. |
| 1828 | |
| 1829 | The glyphs actually produced are of type CHAR_GLYPH. */ |
| 1830 | |
| 1831 | static void |
| 1832 | produce_glyphless_glyph (struct it *it, Lisp_Object acronym) |
| 1833 | { |
| 1834 | int len, face_id = merge_glyphless_glyph_face (it); |
| 1835 | char buf[sizeof "\\x" + max (6, (sizeof it->c * CHAR_BIT + 3) / 4)]; |
| 1836 | char const *str = " "; |
| 1837 | |
| 1838 | if (it->glyphless_method == GLYPHLESS_DISPLAY_THIN_SPACE) |
| 1839 | { |
| 1840 | /* As there's no way to produce a thin space, we produce a space |
| 1841 | of canonical width. */ |
| 1842 | len = 1; |
| 1843 | } |
| 1844 | else if (it->glyphless_method == GLYPHLESS_DISPLAY_EMPTY_BOX) |
| 1845 | { |
| 1846 | len = CHAR_WIDTH (it->c); |
| 1847 | if (len == 0) |
| 1848 | len = 1; |
| 1849 | else if (len > 4) |
| 1850 | len = 4; |
| 1851 | len = sprintf (buf, "[%.*s]", len, str); |
| 1852 | str = buf; |
| 1853 | } |
| 1854 | else |
| 1855 | { |
| 1856 | if (it->glyphless_method == GLYPHLESS_DISPLAY_ACRONYM) |
| 1857 | { |
| 1858 | if (! STRINGP (acronym) && CHAR_TABLE_P (Vglyphless_char_display)) |
| 1859 | acronym = CHAR_TABLE_REF (Vglyphless_char_display, it->c); |
| 1860 | if (CONSP (acronym)) |
| 1861 | acronym = XCDR (acronym); |
| 1862 | buf[0] = '['; |
| 1863 | str = STRINGP (acronym) ? SSDATA (acronym) : ""; |
| 1864 | for (len = 0; len < 6 && str[len] && ASCII_CHAR_P (str[len]); len++) |
| 1865 | buf[1 + len] = str[len]; |
| 1866 | buf[1 + len] = ']'; |
| 1867 | len += 2; |
| 1868 | } |
| 1869 | else |
| 1870 | { |
| 1871 | eassert (it->glyphless_method == GLYPHLESS_DISPLAY_HEX_CODE); |
| 1872 | len = (it->c < 0x10000 ? sprintf (buf, "\\u%04X", it->c) |
| 1873 | : it->c <= MAX_UNICODE_CHAR ? sprintf (buf, "\\U%06X", it->c) |
| 1874 | : sprintf (buf, "\\x%06X", it->c)); |
| 1875 | } |
| 1876 | str = buf; |
| 1877 | } |
| 1878 | |
| 1879 | it->pixel_width = len; |
| 1880 | it->nglyphs = len; |
| 1881 | if (it->glyph_row) |
| 1882 | append_glyphless_glyph (it, face_id, str); |
| 1883 | } |
| 1884 | |
| 1885 | \f |
| 1886 | /*********************************************************************** |
| 1887 | Faces |
| 1888 | ***********************************************************************/ |
| 1889 | |
| 1890 | /* Value is non-zero if attribute ATTR may be used. ATTR should be |
| 1891 | one of the enumerators from enum no_color_bit, or a bit set built |
| 1892 | from them. Some display attributes may not be used together with |
| 1893 | color; the termcap capability `NC' specifies which ones. */ |
| 1894 | |
| 1895 | #define MAY_USE_WITH_COLORS_P(tty, ATTR) \ |
| 1896 | (tty->TN_max_colors > 0 \ |
| 1897 | ? (tty->TN_no_color_video & (ATTR)) == 0 \ |
| 1898 | : 1) |
| 1899 | |
| 1900 | /* Turn appearances of face FACE_ID on tty frame F on. |
| 1901 | FACE_ID is a realized face ID number, in the face cache. */ |
| 1902 | |
| 1903 | static void |
| 1904 | turn_on_face (struct frame *f, int face_id) |
| 1905 | { |
| 1906 | struct face *face = FACE_FROM_ID (f, face_id); |
| 1907 | unsigned long fg = face->foreground; |
| 1908 | unsigned long bg = face->background; |
| 1909 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1910 | |
| 1911 | /* Use reverse video if the face specifies that. |
| 1912 | Do this first because TS_end_standout_mode may be the same |
| 1913 | as TS_exit_attribute_mode, which turns all appearances off. */ |
| 1914 | if (MAY_USE_WITH_COLORS_P (tty, NC_REVERSE) |
| 1915 | && (inverse_video |
| 1916 | ? fg == FACE_TTY_DEFAULT_FG_COLOR || bg == FACE_TTY_DEFAULT_BG_COLOR |
| 1917 | : fg == FACE_TTY_DEFAULT_BG_COLOR || bg == FACE_TTY_DEFAULT_FG_COLOR)) |
| 1918 | tty_toggle_highlight (tty); |
| 1919 | |
| 1920 | if (face->tty_bold_p && MAY_USE_WITH_COLORS_P (tty, NC_BOLD)) |
| 1921 | OUTPUT1_IF (tty, tty->TS_enter_bold_mode); |
| 1922 | |
| 1923 | if (face->tty_italic_p && MAY_USE_WITH_COLORS_P (tty, NC_ITALIC)) |
| 1924 | { |
| 1925 | if (tty->TS_enter_italic_mode) |
| 1926 | OUTPUT1 (tty, tty->TS_enter_italic_mode); |
| 1927 | else |
| 1928 | /* Italics mode is unavailable on many terminals. In that |
| 1929 | case, map slant to dimmed text; we want italic text to |
| 1930 | appear different and dimming is not otherwise used. */ |
| 1931 | OUTPUT1 (tty, tty->TS_enter_dim_mode); |
| 1932 | } |
| 1933 | |
| 1934 | if (face->tty_underline_p && MAY_USE_WITH_COLORS_P (tty, NC_UNDERLINE)) |
| 1935 | OUTPUT1_IF (tty, tty->TS_enter_underline_mode); |
| 1936 | |
| 1937 | if (tty->TN_max_colors > 0) |
| 1938 | { |
| 1939 | const char *ts; |
| 1940 | char *p; |
| 1941 | |
| 1942 | ts = tty->standout_mode ? tty->TS_set_background : tty->TS_set_foreground; |
| 1943 | if (face_tty_specified_color (fg) && ts) |
| 1944 | { |
| 1945 | p = tparam (ts, NULL, 0, fg, 0, 0, 0); |
| 1946 | OUTPUT (tty, p); |
| 1947 | xfree (p); |
| 1948 | } |
| 1949 | |
| 1950 | ts = tty->standout_mode ? tty->TS_set_foreground : tty->TS_set_background; |
| 1951 | if (face_tty_specified_color (bg) && ts) |
| 1952 | { |
| 1953 | p = tparam (ts, NULL, 0, bg, 0, 0, 0); |
| 1954 | OUTPUT (tty, p); |
| 1955 | xfree (p); |
| 1956 | } |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | |
| 1961 | /* Turn off appearances of face FACE_ID on tty frame F. */ |
| 1962 | |
| 1963 | static void |
| 1964 | turn_off_face (struct frame *f, int face_id) |
| 1965 | { |
| 1966 | struct face *face = FACE_FROM_ID (f, face_id); |
| 1967 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1968 | |
| 1969 | eassert (face != NULL); |
| 1970 | |
| 1971 | if (tty->TS_exit_attribute_mode) |
| 1972 | { |
| 1973 | /* Capability "me" will turn off appearance modes double-bright, |
| 1974 | half-bright, reverse-video, standout, underline. It may or |
| 1975 | may not turn off alt-char-mode. */ |
| 1976 | if (face->tty_bold_p |
| 1977 | || face->tty_italic_p |
| 1978 | || face->tty_reverse_p |
| 1979 | || face->tty_underline_p) |
| 1980 | { |
| 1981 | OUTPUT1_IF (tty, tty->TS_exit_attribute_mode); |
| 1982 | if (strcmp (tty->TS_exit_attribute_mode, tty->TS_end_standout_mode) == 0) |
| 1983 | tty->standout_mode = 0; |
| 1984 | } |
| 1985 | } |
| 1986 | else |
| 1987 | { |
| 1988 | /* If we don't have "me" we can only have those appearances |
| 1989 | that have exit sequences defined. */ |
| 1990 | if (face->tty_underline_p) |
| 1991 | OUTPUT_IF (tty, tty->TS_exit_underline_mode); |
| 1992 | } |
| 1993 | |
| 1994 | /* Switch back to default colors. */ |
| 1995 | if (tty->TN_max_colors > 0 |
| 1996 | && ((face->foreground != FACE_TTY_DEFAULT_COLOR |
| 1997 | && face->foreground != FACE_TTY_DEFAULT_FG_COLOR) |
| 1998 | || (face->background != FACE_TTY_DEFAULT_COLOR |
| 1999 | && face->background != FACE_TTY_DEFAULT_BG_COLOR))) |
| 2000 | OUTPUT1_IF (tty, tty->TS_orig_pair); |
| 2001 | } |
| 2002 | |
| 2003 | |
| 2004 | /* Return true if the terminal on frame F supports all of the |
| 2005 | capabilities in CAPS simultaneously. */ |
| 2006 | |
| 2007 | bool |
| 2008 | tty_capable_p (struct tty_display_info *tty, unsigned int caps) |
| 2009 | { |
| 2010 | #define TTY_CAPABLE_P_TRY(tty, cap, TS, NC_bit) \ |
| 2011 | if ((caps & (cap)) && (!(TS) || !MAY_USE_WITH_COLORS_P(tty, NC_bit))) \ |
| 2012 | return 0; |
| 2013 | |
| 2014 | TTY_CAPABLE_P_TRY (tty, TTY_CAP_INVERSE, tty->TS_standout_mode, NC_REVERSE); |
| 2015 | TTY_CAPABLE_P_TRY (tty, TTY_CAP_UNDERLINE, tty->TS_enter_underline_mode, NC_UNDERLINE); |
| 2016 | TTY_CAPABLE_P_TRY (tty, TTY_CAP_BOLD, tty->TS_enter_bold_mode, NC_BOLD); |
| 2017 | TTY_CAPABLE_P_TRY (tty, TTY_CAP_DIM, tty->TS_enter_dim_mode, NC_DIM); |
| 2018 | TTY_CAPABLE_P_TRY (tty, TTY_CAP_ITALIC, tty->TS_enter_italic_mode, NC_ITALIC); |
| 2019 | |
| 2020 | /* We can do it! */ |
| 2021 | return 1; |
| 2022 | } |
| 2023 | |
| 2024 | /* Return non-zero if the terminal is capable to display colors. */ |
| 2025 | |
| 2026 | DEFUN ("tty-display-color-p", Ftty_display_color_p, Stty_display_color_p, |
| 2027 | 0, 1, 0, |
| 2028 | doc: /* Return non-nil if the tty device TERMINAL can display colors. |
| 2029 | |
| 2030 | TERMINAL can be a terminal object, a frame, or nil (meaning the |
| 2031 | selected frame's terminal). This function always returns nil if |
| 2032 | TERMINAL does not refer to a text terminal. */) |
| 2033 | (Lisp_Object terminal) |
| 2034 | { |
| 2035 | struct terminal *t = get_tty_terminal (terminal, 0); |
| 2036 | if (!t) |
| 2037 | return Qnil; |
| 2038 | else |
| 2039 | return t->display_info.tty->TN_max_colors > 0 ? Qt : Qnil; |
| 2040 | } |
| 2041 | |
| 2042 | /* Return the number of supported colors. */ |
| 2043 | DEFUN ("tty-display-color-cells", Ftty_display_color_cells, |
| 2044 | Stty_display_color_cells, 0, 1, 0, |
| 2045 | doc: /* Return the number of colors supported by the tty device TERMINAL. |
| 2046 | |
| 2047 | TERMINAL can be a terminal object, a frame, or nil (meaning the |
| 2048 | selected frame's terminal). This function always returns 0 if |
| 2049 | TERMINAL does not refer to a text terminal. */) |
| 2050 | (Lisp_Object terminal) |
| 2051 | { |
| 2052 | struct terminal *t = get_tty_terminal (terminal, 0); |
| 2053 | if (!t) |
| 2054 | return make_number (0); |
| 2055 | else |
| 2056 | return make_number (t->display_info.tty->TN_max_colors); |
| 2057 | } |
| 2058 | |
| 2059 | #ifndef DOS_NT |
| 2060 | |
| 2061 | /* Declare here rather than in the function, as in the rest of Emacs, |
| 2062 | to work around an HPUX compiler bug (?). See |
| 2063 | http://lists.gnu.org/archive/html/emacs-devel/2007-08/msg00410.html */ |
| 2064 | static int default_max_colors; |
| 2065 | static int default_max_pairs; |
| 2066 | static int default_no_color_video; |
| 2067 | static char *default_orig_pair; |
| 2068 | static char *default_set_foreground; |
| 2069 | static char *default_set_background; |
| 2070 | |
| 2071 | /* Save or restore the default color-related capabilities of this |
| 2072 | terminal. */ |
| 2073 | static void |
| 2074 | tty_default_color_capabilities (struct tty_display_info *tty, bool save) |
| 2075 | { |
| 2076 | |
| 2077 | if (save) |
| 2078 | { |
| 2079 | dupstring (&default_orig_pair, tty->TS_orig_pair); |
| 2080 | dupstring (&default_set_foreground, tty->TS_set_foreground); |
| 2081 | dupstring (&default_set_background, tty->TS_set_background); |
| 2082 | default_max_colors = tty->TN_max_colors; |
| 2083 | default_max_pairs = tty->TN_max_pairs; |
| 2084 | default_no_color_video = tty->TN_no_color_video; |
| 2085 | } |
| 2086 | else |
| 2087 | { |
| 2088 | tty->TS_orig_pair = default_orig_pair; |
| 2089 | tty->TS_set_foreground = default_set_foreground; |
| 2090 | tty->TS_set_background = default_set_background; |
| 2091 | tty->TN_max_colors = default_max_colors; |
| 2092 | tty->TN_max_pairs = default_max_pairs; |
| 2093 | tty->TN_no_color_video = default_no_color_video; |
| 2094 | } |
| 2095 | } |
| 2096 | |
| 2097 | /* Setup one of the standard tty color schemes according to MODE. |
| 2098 | MODE's value is generally the number of colors which we want to |
| 2099 | support; zero means set up for the default capabilities, the ones |
| 2100 | we saw at init_tty time; -1 means turn off color support. */ |
| 2101 | static void |
| 2102 | tty_setup_colors (struct tty_display_info *tty, int mode) |
| 2103 | { |
| 2104 | /* Canonicalize all negative values of MODE. */ |
| 2105 | if (mode < -1) |
| 2106 | mode = -1; |
| 2107 | |
| 2108 | switch (mode) |
| 2109 | { |
| 2110 | case -1: /* no colors at all */ |
| 2111 | tty->TN_max_colors = 0; |
| 2112 | tty->TN_max_pairs = 0; |
| 2113 | tty->TN_no_color_video = 0; |
| 2114 | tty->TS_set_foreground = tty->TS_set_background = tty->TS_orig_pair = NULL; |
| 2115 | break; |
| 2116 | case 0: /* default colors, if any */ |
| 2117 | default: |
| 2118 | tty_default_color_capabilities (tty, 0); |
| 2119 | break; |
| 2120 | case 8: /* 8 standard ANSI colors */ |
| 2121 | tty->TS_orig_pair = "\033[0m"; |
| 2122 | #ifdef TERMINFO |
| 2123 | tty->TS_set_foreground = "\033[3%p1%dm"; |
| 2124 | tty->TS_set_background = "\033[4%p1%dm"; |
| 2125 | #else |
| 2126 | tty->TS_set_foreground = "\033[3%dm"; |
| 2127 | tty->TS_set_background = "\033[4%dm"; |
| 2128 | #endif |
| 2129 | tty->TN_max_colors = 8; |
| 2130 | tty->TN_max_pairs = 64; |
| 2131 | tty->TN_no_color_video = 0; |
| 2132 | break; |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | void |
| 2137 | set_tty_color_mode (struct tty_display_info *tty, struct frame *f) |
| 2138 | { |
| 2139 | Lisp_Object tem, val; |
| 2140 | Lisp_Object color_mode; |
| 2141 | int mode; |
| 2142 | Lisp_Object tty_color_mode_alist |
| 2143 | = Fintern_soft (build_string ("tty-color-mode-alist"), Qnil); |
| 2144 | |
| 2145 | tem = assq_no_quit (Qtty_color_mode, f->param_alist); |
| 2146 | val = CONSP (tem) ? XCDR (tem) : Qnil; |
| 2147 | |
| 2148 | if (INTEGERP (val)) |
| 2149 | color_mode = val; |
| 2150 | else if (SYMBOLP (tty_color_mode_alist)) |
| 2151 | { |
| 2152 | tem = Fassq (val, Fsymbol_value (tty_color_mode_alist)); |
| 2153 | color_mode = CONSP (tem) ? XCDR (tem) : Qnil; |
| 2154 | } |
| 2155 | else |
| 2156 | color_mode = Qnil; |
| 2157 | |
| 2158 | mode = TYPE_RANGED_INTEGERP (int, color_mode) ? XINT (color_mode) : 0; |
| 2159 | |
| 2160 | if (mode != tty->previous_color_mode) |
| 2161 | { |
| 2162 | tty->previous_color_mode = mode; |
| 2163 | tty_setup_colors (tty , mode); |
| 2164 | /* This recomputes all the faces given the new color definitions. */ |
| 2165 | safe_call (1, intern ("tty-set-up-initial-frame-faces")); |
| 2166 | } |
| 2167 | } |
| 2168 | |
| 2169 | #endif /* !DOS_NT */ |
| 2170 | |
| 2171 | \f |
| 2172 | |
| 2173 | /* Return the tty display object specified by TERMINAL. */ |
| 2174 | |
| 2175 | static struct terminal * |
| 2176 | get_tty_terminal (Lisp_Object terminal, bool throw) |
| 2177 | { |
| 2178 | struct terminal *t = get_terminal (terminal, throw); |
| 2179 | |
| 2180 | if (t && t->type != output_termcap && t->type != output_msdos_raw) |
| 2181 | { |
| 2182 | if (throw) |
| 2183 | error ("Device %d is not a termcap terminal device", t->id); |
| 2184 | else |
| 2185 | return NULL; |
| 2186 | } |
| 2187 | |
| 2188 | return t; |
| 2189 | } |
| 2190 | |
| 2191 | /* Return an active termcap device that uses the tty device with the |
| 2192 | given name. |
| 2193 | |
| 2194 | This function ignores suspended devices. |
| 2195 | |
| 2196 | Returns NULL if the named terminal device is not opened. */ |
| 2197 | |
| 2198 | struct terminal * |
| 2199 | get_named_tty (const char *name) |
| 2200 | { |
| 2201 | struct terminal *t; |
| 2202 | |
| 2203 | eassert (name); |
| 2204 | |
| 2205 | for (t = terminal_list; t; t = t->next_terminal) |
| 2206 | { |
| 2207 | if ((t->type == output_termcap || t->type == output_msdos_raw) |
| 2208 | && !strcmp (t->display_info.tty->name, name) |
| 2209 | && TERMINAL_ACTIVE_P (t)) |
| 2210 | return t; |
| 2211 | } |
| 2212 | |
| 2213 | return 0; |
| 2214 | } |
| 2215 | |
| 2216 | \f |
| 2217 | DEFUN ("tty-type", Ftty_type, Stty_type, 0, 1, 0, |
| 2218 | doc: /* Return the type of the tty device that TERMINAL uses. |
| 2219 | Returns nil if TERMINAL is not on a tty device. |
| 2220 | |
| 2221 | TERMINAL can be a terminal object, a frame, or nil (meaning the |
| 2222 | selected frame's terminal). */) |
| 2223 | (Lisp_Object terminal) |
| 2224 | { |
| 2225 | struct terminal *t = get_terminal (terminal, 1); |
| 2226 | |
| 2227 | if (t->type != output_termcap && t->type != output_msdos_raw) |
| 2228 | return Qnil; |
| 2229 | |
| 2230 | if (t->display_info.tty->type) |
| 2231 | return build_string (t->display_info.tty->type); |
| 2232 | else |
| 2233 | return Qnil; |
| 2234 | } |
| 2235 | |
| 2236 | DEFUN ("controlling-tty-p", Fcontrolling_tty_p, Scontrolling_tty_p, 0, 1, 0, |
| 2237 | doc: /* Return non-nil if TERMINAL is the controlling tty of the Emacs process. |
| 2238 | |
| 2239 | TERMINAL can be a terminal object, a frame, or nil (meaning the |
| 2240 | selected frame's terminal). This function always returns nil if |
| 2241 | TERMINAL is not on a tty device. */) |
| 2242 | (Lisp_Object terminal) |
| 2243 | { |
| 2244 | struct terminal *t = get_terminal (terminal, 1); |
| 2245 | |
| 2246 | if ((t->type != output_termcap && t->type != output_msdos_raw) |
| 2247 | || strcmp (t->display_info.tty->name, DEV_TTY) != 0) |
| 2248 | return Qnil; |
| 2249 | else |
| 2250 | return Qt; |
| 2251 | } |
| 2252 | |
| 2253 | DEFUN ("tty-no-underline", Ftty_no_underline, Stty_no_underline, 0, 1, 0, |
| 2254 | doc: /* Declare that the tty used by TERMINAL does not handle underlining. |
| 2255 | This is used to override the terminfo data, for certain terminals that |
| 2256 | do not really do underlining, but say that they do. This function has |
| 2257 | no effect if used on a non-tty terminal. |
| 2258 | |
| 2259 | TERMINAL can be a terminal object, a frame or nil (meaning the |
| 2260 | selected frame's terminal). This function always returns nil if |
| 2261 | TERMINAL does not refer to a text terminal. */) |
| 2262 | (Lisp_Object terminal) |
| 2263 | { |
| 2264 | struct terminal *t = get_terminal (terminal, 1); |
| 2265 | |
| 2266 | if (t->type == output_termcap) |
| 2267 | t->display_info.tty->TS_enter_underline_mode = 0; |
| 2268 | return Qnil; |
| 2269 | } |
| 2270 | |
| 2271 | DEFUN ("tty-top-frame", Ftty_top_frame, Stty_top_frame, 0, 1, 0, |
| 2272 | doc: /* Return the topmost terminal frame on TERMINAL. |
| 2273 | TERMINAL can be a terminal object, a frame or nil (meaning the |
| 2274 | selected frame's terminal). This function returns nil if TERMINAL |
| 2275 | does not refer to a text terminal. Otherwise, it returns the |
| 2276 | top-most frame on the text terminal. */) |
| 2277 | (Lisp_Object terminal) |
| 2278 | { |
| 2279 | struct terminal *t = get_terminal (terminal, 1); |
| 2280 | |
| 2281 | if (t->type == output_termcap) |
| 2282 | return t->display_info.tty->top_frame; |
| 2283 | return Qnil; |
| 2284 | } |
| 2285 | |
| 2286 | \f |
| 2287 | |
| 2288 | DEFUN ("suspend-tty", Fsuspend_tty, Ssuspend_tty, 0, 1, 0, |
| 2289 | doc: /* Suspend the terminal device TTY. |
| 2290 | |
| 2291 | The device is restored to its default state, and Emacs ceases all |
| 2292 | access to the tty device. Frames that use the device are not deleted, |
| 2293 | but input is not read from them and if they change, their display is |
| 2294 | not updated. |
| 2295 | |
| 2296 | TTY may be a terminal object, a frame, or nil for the terminal device |
| 2297 | of the currently selected frame. |
| 2298 | |
| 2299 | This function runs `suspend-tty-functions' after suspending the |
| 2300 | device. The functions are run with one arg, the id of the suspended |
| 2301 | terminal device. |
| 2302 | |
| 2303 | `suspend-tty' does nothing if it is called on a device that is already |
| 2304 | suspended. |
| 2305 | |
| 2306 | A suspended tty may be resumed by calling `resume-tty' on it. */) |
| 2307 | (Lisp_Object tty) |
| 2308 | { |
| 2309 | struct terminal *t = get_tty_terminal (tty, 1); |
| 2310 | FILE *f; |
| 2311 | |
| 2312 | if (!t) |
| 2313 | error ("Unknown tty device"); |
| 2314 | |
| 2315 | f = t->display_info.tty->input; |
| 2316 | |
| 2317 | if (f) |
| 2318 | { |
| 2319 | /* First run `suspend-tty-functions' and then clean up the tty |
| 2320 | state because `suspend-tty-functions' might need to change |
| 2321 | the tty state. */ |
| 2322 | Lisp_Object args[2]; |
| 2323 | args[0] = intern ("suspend-tty-functions"); |
| 2324 | XSETTERMINAL (args[1], t); |
| 2325 | Frun_hook_with_args (2, args); |
| 2326 | |
| 2327 | reset_sys_modes (t->display_info.tty); |
| 2328 | delete_keyboard_wait_descriptor (fileno (f)); |
| 2329 | |
| 2330 | #ifndef MSDOS |
| 2331 | fclose (f); |
| 2332 | if (f != t->display_info.tty->output) |
| 2333 | fclose (t->display_info.tty->output); |
| 2334 | #endif |
| 2335 | |
| 2336 | t->display_info.tty->input = 0; |
| 2337 | t->display_info.tty->output = 0; |
| 2338 | |
| 2339 | if (FRAMEP (t->display_info.tty->top_frame)) |
| 2340 | SET_FRAME_VISIBLE (XFRAME (t->display_info.tty->top_frame), 0); |
| 2341 | |
| 2342 | } |
| 2343 | |
| 2344 | /* Clear display hooks to prevent further output. */ |
| 2345 | clear_tty_hooks (t); |
| 2346 | |
| 2347 | return Qnil; |
| 2348 | } |
| 2349 | |
| 2350 | DEFUN ("resume-tty", Fresume_tty, Sresume_tty, 0, 1, 0, |
| 2351 | doc: /* Resume the previously suspended terminal device TTY. |
| 2352 | The terminal is opened and reinitialized. Frames that are on the |
| 2353 | suspended terminal are revived. |
| 2354 | |
| 2355 | It is an error to resume a terminal while another terminal is active |
| 2356 | on the same device. |
| 2357 | |
| 2358 | This function runs `resume-tty-functions' after resuming the terminal. |
| 2359 | The functions are run with one arg, the id of the resumed terminal |
| 2360 | device. |
| 2361 | |
| 2362 | `resume-tty' does nothing if it is called on a device that is not |
| 2363 | suspended. |
| 2364 | |
| 2365 | TTY may be a terminal object, a frame, or nil (meaning the selected |
| 2366 | frame's terminal). */) |
| 2367 | (Lisp_Object tty) |
| 2368 | { |
| 2369 | struct terminal *t = get_tty_terminal (tty, 1); |
| 2370 | int fd; |
| 2371 | |
| 2372 | if (!t) |
| 2373 | error ("Unknown tty device"); |
| 2374 | |
| 2375 | if (!t->display_info.tty->input) |
| 2376 | { |
| 2377 | if (get_named_tty (t->display_info.tty->name)) |
| 2378 | error ("Cannot resume display while another display is active on the same device"); |
| 2379 | |
| 2380 | #ifdef MSDOS |
| 2381 | t->display_info.tty->output = stdout; |
| 2382 | t->display_info.tty->input = stdin; |
| 2383 | #else /* !MSDOS */ |
| 2384 | fd = emacs_open (t->display_info.tty->name, O_RDWR | O_NOCTTY, 0); |
| 2385 | t->display_info.tty->input = t->display_info.tty->output |
| 2386 | = fd < 0 ? 0 : fdopen (fd, "w+"); |
| 2387 | |
| 2388 | if (! t->display_info.tty->input) |
| 2389 | { |
| 2390 | int open_errno = errno; |
| 2391 | emacs_close (fd); |
| 2392 | report_file_errno ("Cannot reopen tty device", |
| 2393 | build_string (t->display_info.tty->name), |
| 2394 | open_errno); |
| 2395 | } |
| 2396 | |
| 2397 | if (!O_IGNORE_CTTY && strcmp (t->display_info.tty->name, DEV_TTY) != 0) |
| 2398 | dissociate_if_controlling_tty (fd); |
| 2399 | #endif |
| 2400 | |
| 2401 | add_keyboard_wait_descriptor (fd); |
| 2402 | |
| 2403 | if (FRAMEP (t->display_info.tty->top_frame)) |
| 2404 | { |
| 2405 | struct frame *f = XFRAME (t->display_info.tty->top_frame); |
| 2406 | int width, height; |
| 2407 | int old_height = FRAME_COLS (f); |
| 2408 | int old_width = FRAME_LINES (f); |
| 2409 | |
| 2410 | /* Check if terminal/window size has changed while the frame |
| 2411 | was suspended. */ |
| 2412 | get_tty_size (fileno (t->display_info.tty->input), &width, &height); |
| 2413 | if (width != old_width || height != old_height) |
| 2414 | change_frame_size (f, width, height, 0, 0, 0, 0); |
| 2415 | SET_FRAME_VISIBLE (XFRAME (t->display_info.tty->top_frame), 1); |
| 2416 | } |
| 2417 | |
| 2418 | set_tty_hooks (t); |
| 2419 | init_sys_modes (t->display_info.tty); |
| 2420 | |
| 2421 | { |
| 2422 | /* Run `resume-tty-functions'. */ |
| 2423 | Lisp_Object args[2]; |
| 2424 | args[0] = intern ("resume-tty-functions"); |
| 2425 | XSETTERMINAL (args[1], t); |
| 2426 | Frun_hook_with_args (2, args); |
| 2427 | } |
| 2428 | } |
| 2429 | |
| 2430 | set_tty_hooks (t); |
| 2431 | |
| 2432 | return Qnil; |
| 2433 | } |
| 2434 | |
| 2435 | \f |
| 2436 | /*********************************************************************** |
| 2437 | Mouse |
| 2438 | ***********************************************************************/ |
| 2439 | |
| 2440 | #ifdef HAVE_GPM |
| 2441 | |
| 2442 | #ifndef HAVE_WINDOW_SYSTEM |
| 2443 | void |
| 2444 | term_mouse_moveto (int x, int y) |
| 2445 | { |
| 2446 | /* TODO: how to set mouse position? |
| 2447 | const char *name; |
| 2448 | int fd; |
| 2449 | name = (const char *) ttyname (0); |
| 2450 | fd = emacs_open (name, O_WRONLY, 0); |
| 2451 | SOME_FUNCTION (x, y, fd); |
| 2452 | emacs_close (fd); |
| 2453 | last_mouse_x = x; |
| 2454 | last_mouse_y = y; */ |
| 2455 | } |
| 2456 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2457 | |
| 2458 | /* Implementation of draw_row_with_mouse_face for TTY/GPM. */ |
| 2459 | void |
| 2460 | tty_draw_row_with_mouse_face (struct window *w, struct glyph_row *row, |
| 2461 | int start_hpos, int end_hpos, |
| 2462 | enum draw_glyphs_face draw) |
| 2463 | { |
| 2464 | int nglyphs = end_hpos - start_hpos; |
| 2465 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
| 2466 | struct tty_display_info *tty = FRAME_TTY (f); |
| 2467 | int face_id = tty->mouse_highlight.mouse_face_face_id; |
| 2468 | int save_x, save_y, pos_x, pos_y; |
| 2469 | |
| 2470 | if (end_hpos >= row->used[TEXT_AREA]) |
| 2471 | nglyphs = row->used[TEXT_AREA] - start_hpos; |
| 2472 | |
| 2473 | pos_y = row->y + WINDOW_TOP_EDGE_Y (w); |
| 2474 | pos_x = row->used[LEFT_MARGIN_AREA] + start_hpos + WINDOW_LEFT_EDGE_X (w); |
| 2475 | |
| 2476 | /* Save current cursor co-ordinates. */ |
| 2477 | save_y = curY (tty); |
| 2478 | save_x = curX (tty); |
| 2479 | cursor_to (f, pos_y, pos_x); |
| 2480 | |
| 2481 | if (draw == DRAW_MOUSE_FACE) |
| 2482 | tty_write_glyphs_with_face (f, row->glyphs[TEXT_AREA] + start_hpos, |
| 2483 | nglyphs, face_id); |
| 2484 | else if (draw == DRAW_NORMAL_TEXT) |
| 2485 | write_glyphs (f, row->glyphs[TEXT_AREA] + start_hpos, nglyphs); |
| 2486 | |
| 2487 | cursor_to (f, save_y, save_x); |
| 2488 | } |
| 2489 | |
| 2490 | static bool |
| 2491 | term_mouse_movement (struct frame *frame, Gpm_Event *event) |
| 2492 | { |
| 2493 | /* Has the mouse moved off the glyph it was on at the last sighting? */ |
| 2494 | if (event->x != last_mouse_x || event->y != last_mouse_y) |
| 2495 | { |
| 2496 | frame->mouse_moved = 1; |
| 2497 | note_mouse_highlight (frame, event->x, event->y); |
| 2498 | /* Remember which glyph we're now on. */ |
| 2499 | last_mouse_x = event->x; |
| 2500 | last_mouse_y = event->y; |
| 2501 | return 1; |
| 2502 | } |
| 2503 | return 0; |
| 2504 | } |
| 2505 | |
| 2506 | /* Return the Time that corresponds to T. Wrap around on overflow. */ |
| 2507 | static Time |
| 2508 | timeval_to_Time (struct timeval const *t) |
| 2509 | { |
| 2510 | Time s_1000, ms; |
| 2511 | |
| 2512 | s_1000 = t->tv_sec; |
| 2513 | s_1000 *= 1000; |
| 2514 | ms = t->tv_usec / 1000; |
| 2515 | return s_1000 + ms; |
| 2516 | } |
| 2517 | |
| 2518 | /* Return the current position of the mouse. |
| 2519 | |
| 2520 | Set *f to the frame the mouse is in, or zero if the mouse is in no |
| 2521 | Emacs frame. If it is set to zero, all the other arguments are |
| 2522 | garbage. |
| 2523 | |
| 2524 | Set *bar_window to Qnil, and *x and *y to the column and |
| 2525 | row of the character cell the mouse is over. |
| 2526 | |
| 2527 | Set *timeptr to the time the mouse was at the returned position. |
| 2528 | |
| 2529 | This clears mouse_moved until the next motion |
| 2530 | event arrives. */ |
| 2531 | static void |
| 2532 | term_mouse_position (struct frame **fp, int insist, Lisp_Object *bar_window, |
| 2533 | enum scroll_bar_part *part, Lisp_Object *x, |
| 2534 | Lisp_Object *y, Time *timeptr) |
| 2535 | { |
| 2536 | struct timeval now; |
| 2537 | |
| 2538 | *fp = SELECTED_FRAME (); |
| 2539 | (*fp)->mouse_moved = 0; |
| 2540 | |
| 2541 | *bar_window = Qnil; |
| 2542 | *part = 0; |
| 2543 | |
| 2544 | XSETINT (*x, last_mouse_x); |
| 2545 | XSETINT (*y, last_mouse_y); |
| 2546 | gettimeofday(&now, 0); |
| 2547 | *timeptr = timeval_to_Time (&now); |
| 2548 | } |
| 2549 | |
| 2550 | /* Prepare a mouse-event in *RESULT for placement in the input queue. |
| 2551 | |
| 2552 | If the event is a button press, then note that we have grabbed |
| 2553 | the mouse. */ |
| 2554 | |
| 2555 | static Lisp_Object |
| 2556 | term_mouse_click (struct input_event *result, Gpm_Event *event, |
| 2557 | struct frame *f) |
| 2558 | { |
| 2559 | struct timeval now; |
| 2560 | int i, j; |
| 2561 | |
| 2562 | result->kind = GPM_CLICK_EVENT; |
| 2563 | for (i = 0, j = GPM_B_LEFT; i < 3; i++, j >>= 1 ) |
| 2564 | { |
| 2565 | if (event->buttons & j) { |
| 2566 | result->code = i; /* button number */ |
| 2567 | break; |
| 2568 | } |
| 2569 | } |
| 2570 | gettimeofday(&now, 0); |
| 2571 | result->timestamp = timeval_to_Time (&now); |
| 2572 | |
| 2573 | if (event->type & GPM_UP) |
| 2574 | result->modifiers = up_modifier; |
| 2575 | else if (event->type & GPM_DOWN) |
| 2576 | result->modifiers = down_modifier; |
| 2577 | else |
| 2578 | result->modifiers = 0; |
| 2579 | |
| 2580 | if (event->type & GPM_SINGLE) |
| 2581 | result->modifiers |= click_modifier; |
| 2582 | |
| 2583 | if (event->type & GPM_DOUBLE) |
| 2584 | result->modifiers |= double_modifier; |
| 2585 | |
| 2586 | if (event->type & GPM_TRIPLE) |
| 2587 | result->modifiers |= triple_modifier; |
| 2588 | |
| 2589 | if (event->type & GPM_DRAG) |
| 2590 | result->modifiers |= drag_modifier; |
| 2591 | |
| 2592 | if (!(event->type & (GPM_MOVE | GPM_DRAG))) { |
| 2593 | |
| 2594 | /* 1 << KG_SHIFT */ |
| 2595 | if (event->modifiers & (1 << 0)) |
| 2596 | result->modifiers |= shift_modifier; |
| 2597 | |
| 2598 | /* 1 << KG_CTRL */ |
| 2599 | if (event->modifiers & (1 << 2)) |
| 2600 | result->modifiers |= ctrl_modifier; |
| 2601 | |
| 2602 | /* 1 << KG_ALT || KG_ALTGR */ |
| 2603 | if (event->modifiers & (1 << 3) |
| 2604 | || event->modifiers & (1 << 1)) |
| 2605 | result->modifiers |= meta_modifier; |
| 2606 | } |
| 2607 | |
| 2608 | XSETINT (result->x, event->x); |
| 2609 | XSETINT (result->y, event->y); |
| 2610 | XSETFRAME (result->frame_or_window, f); |
| 2611 | result->arg = Qnil; |
| 2612 | return Qnil; |
| 2613 | } |
| 2614 | |
| 2615 | int |
| 2616 | handle_one_term_event (struct tty_display_info *tty, Gpm_Event *event, struct input_event* hold_quit) |
| 2617 | { |
| 2618 | struct frame *f = XFRAME (tty->top_frame); |
| 2619 | struct input_event ie; |
| 2620 | bool do_help = 0; |
| 2621 | int count = 0; |
| 2622 | |
| 2623 | EVENT_INIT (ie); |
| 2624 | ie.kind = NO_EVENT; |
| 2625 | ie.arg = Qnil; |
| 2626 | |
| 2627 | if (event->type & (GPM_MOVE | GPM_DRAG)) { |
| 2628 | previous_help_echo_string = help_echo_string; |
| 2629 | help_echo_string = Qnil; |
| 2630 | |
| 2631 | Gpm_DrawPointer (event->x, event->y, fileno (tty->output)); |
| 2632 | |
| 2633 | if (!term_mouse_movement (f, event)) |
| 2634 | help_echo_string = previous_help_echo_string; |
| 2635 | |
| 2636 | /* If the contents of the global variable help_echo_string |
| 2637 | has changed, generate a HELP_EVENT. */ |
| 2638 | if (!NILP (help_echo_string) |
| 2639 | || !NILP (previous_help_echo_string)) |
| 2640 | do_help = 1; |
| 2641 | |
| 2642 | goto done; |
| 2643 | } |
| 2644 | else { |
| 2645 | f->mouse_moved = 0; |
| 2646 | term_mouse_click (&ie, event, f); |
| 2647 | } |
| 2648 | |
| 2649 | done: |
| 2650 | if (ie.kind != NO_EVENT) |
| 2651 | { |
| 2652 | kbd_buffer_store_event_hold (&ie, hold_quit); |
| 2653 | count++; |
| 2654 | } |
| 2655 | |
| 2656 | if (do_help |
| 2657 | && !(hold_quit && hold_quit->kind != NO_EVENT)) |
| 2658 | { |
| 2659 | Lisp_Object frame; |
| 2660 | |
| 2661 | if (f) |
| 2662 | XSETFRAME (frame, f); |
| 2663 | else |
| 2664 | frame = Qnil; |
| 2665 | |
| 2666 | gen_help_event (help_echo_string, frame, help_echo_window, |
| 2667 | help_echo_object, help_echo_pos); |
| 2668 | count++; |
| 2669 | } |
| 2670 | |
| 2671 | return count; |
| 2672 | } |
| 2673 | |
| 2674 | DEFUN ("gpm-mouse-start", Fgpm_mouse_start, Sgpm_mouse_start, |
| 2675 | 0, 0, 0, |
| 2676 | doc: /* Open a connection to Gpm. |
| 2677 | Gpm-mouse can only be activated for one tty at a time. */) |
| 2678 | (void) |
| 2679 | { |
| 2680 | struct frame *f = SELECTED_FRAME (); |
| 2681 | struct tty_display_info *tty |
| 2682 | = ((f)->output_method == output_termcap |
| 2683 | ? (f)->terminal->display_info.tty : NULL); |
| 2684 | Gpm_Connect connection; |
| 2685 | |
| 2686 | if (!tty) |
| 2687 | error ("Gpm-mouse only works in the GNU/Linux console"); |
| 2688 | if (gpm_tty == tty) |
| 2689 | return Qnil; /* Already activated, nothing to do. */ |
| 2690 | if (gpm_tty) |
| 2691 | error ("Gpm-mouse can only be activated for one tty at a time"); |
| 2692 | |
| 2693 | connection.eventMask = ~0; |
| 2694 | connection.defaultMask = ~GPM_HARD; |
| 2695 | connection.maxMod = ~0; |
| 2696 | connection.minMod = 0; |
| 2697 | gpm_zerobased = 1; |
| 2698 | |
| 2699 | if (Gpm_Open (&connection, 0) < 0) |
| 2700 | error ("Gpm-mouse failed to connect to the gpm daemon"); |
| 2701 | else |
| 2702 | { |
| 2703 | gpm_tty = tty; |
| 2704 | /* `init_sys_modes' arranges for mouse movements sent through gpm_fd |
| 2705 | to generate SIGIOs. Apparently we need to call reset_sys_modes |
| 2706 | before calling init_sys_modes. */ |
| 2707 | reset_sys_modes (tty); |
| 2708 | init_sys_modes (tty); |
| 2709 | add_gpm_wait_descriptor (gpm_fd); |
| 2710 | return Qnil; |
| 2711 | } |
| 2712 | } |
| 2713 | |
| 2714 | void |
| 2715 | close_gpm (int fd) |
| 2716 | { |
| 2717 | if (fd >= 0) |
| 2718 | delete_gpm_wait_descriptor (fd); |
| 2719 | while (Gpm_Close()); /* close all the stack */ |
| 2720 | gpm_tty = NULL; |
| 2721 | } |
| 2722 | |
| 2723 | DEFUN ("gpm-mouse-stop", Fgpm_mouse_stop, Sgpm_mouse_stop, |
| 2724 | 0, 0, 0, |
| 2725 | doc: /* Close a connection to Gpm. */) |
| 2726 | (void) |
| 2727 | { |
| 2728 | struct frame *f = SELECTED_FRAME (); |
| 2729 | struct tty_display_info *tty |
| 2730 | = ((f)->output_method == output_termcap |
| 2731 | ? (f)->terminal->display_info.tty : NULL); |
| 2732 | |
| 2733 | if (!tty || gpm_tty != tty) |
| 2734 | return Qnil; /* Not activated on this terminal, nothing to do. */ |
| 2735 | |
| 2736 | close_gpm (gpm_fd); |
| 2737 | return Qnil; |
| 2738 | } |
| 2739 | #endif /* HAVE_GPM */ |
| 2740 | |
| 2741 | \f |
| 2742 | /*********************************************************************** |
| 2743 | Menus |
| 2744 | ***********************************************************************/ |
| 2745 | |
| 2746 | #if !defined (MSDOS) |
| 2747 | |
| 2748 | /* TTY menu implementation and main ideas are borrowed from msdos.c. |
| 2749 | |
| 2750 | However, unlike on MSDOS, where the menu text is drawn directly to |
| 2751 | the display video memory, on a TTY we use display_string (see |
| 2752 | display_tty_menu_item in xdisp.c) to put the glyphs produced from |
| 2753 | the menu items into the frame's 'desired_matrix' glyph matrix, and |
| 2754 | then call update_frame_with_menu to deliver the results to the |
| 2755 | glass. The previous contents of the screen, in the form of the |
| 2756 | current_matrix, is stashed away, and used to restore screen |
| 2757 | contents when the menu selection changes or when the final |
| 2758 | selection is made and the menu should be popped down. |
| 2759 | |
| 2760 | The idea of this implementation was suggested by Gerd Moellmann. */ |
| 2761 | |
| 2762 | #define TTYM_FAILURE -1 |
| 2763 | #define TTYM_SUCCESS 1 |
| 2764 | #define TTYM_NO_SELECT 2 |
| 2765 | #define TTYM_IA_SELECT 3 |
| 2766 | #define TTYM_NEXT 4 |
| 2767 | #define TTYM_PREV 5 |
| 2768 | |
| 2769 | /* These hold text of the current and the previous menu help messages. */ |
| 2770 | static const char *menu_help_message, *prev_menu_help_message; |
| 2771 | /* Pane number and item number of the menu item which generated the |
| 2772 | last menu help message. */ |
| 2773 | static int menu_help_paneno, menu_help_itemno; |
| 2774 | |
| 2775 | static Lisp_Object Qtty_menu_navigation_map, Qtty_menu_exit; |
| 2776 | static Lisp_Object Qtty_menu_prev_item, Qtty_menu_next_item; |
| 2777 | static Lisp_Object Qtty_menu_next_menu, Qtty_menu_prev_menu; |
| 2778 | static Lisp_Object Qtty_menu_select, Qtty_menu_ignore; |
| 2779 | static Lisp_Object Qtty_menu_mouse_movement; |
| 2780 | |
| 2781 | typedef struct tty_menu_struct |
| 2782 | { |
| 2783 | int count; |
| 2784 | char **text; |
| 2785 | struct tty_menu_struct **submenu; |
| 2786 | int *panenumber; /* Also used as enabled flag. */ |
| 2787 | ptrdiff_t allocated; |
| 2788 | int panecount; |
| 2789 | int width; |
| 2790 | const char **help_text; |
| 2791 | } tty_menu; |
| 2792 | |
| 2793 | /* Create a brand new menu structure. */ |
| 2794 | |
| 2795 | static tty_menu * |
| 2796 | tty_menu_create (void) |
| 2797 | { |
| 2798 | return xzalloc (sizeof *tty_menu_create ()); |
| 2799 | } |
| 2800 | |
| 2801 | /* Allocate some (more) memory for MENU ensuring that there is room for one |
| 2802 | more item. */ |
| 2803 | |
| 2804 | static void |
| 2805 | tty_menu_make_room (tty_menu *menu) |
| 2806 | { |
| 2807 | if (menu->allocated == menu->count) |
| 2808 | { |
| 2809 | ptrdiff_t allocated = menu->allocated; |
| 2810 | menu->text = xpalloc (menu->text, &allocated, 1, -1, sizeof *menu->text); |
| 2811 | menu->text = xrealloc (menu->text, allocated * sizeof *menu->text); |
| 2812 | menu->submenu = xrealloc (menu->submenu, |
| 2813 | allocated * sizeof *menu->submenu); |
| 2814 | menu->panenumber = xrealloc (menu->panenumber, |
| 2815 | allocated * sizeof *menu->panenumber); |
| 2816 | menu->help_text = xrealloc (menu->help_text, |
| 2817 | allocated * sizeof *menu->help_text); |
| 2818 | menu->allocated = allocated; |
| 2819 | } |
| 2820 | } |
| 2821 | |
| 2822 | /* Search the given menu structure for a given pane number. */ |
| 2823 | |
| 2824 | static tty_menu * |
| 2825 | tty_menu_search_pane (tty_menu *menu, int pane) |
| 2826 | { |
| 2827 | int i; |
| 2828 | tty_menu *try; |
| 2829 | |
| 2830 | for (i = 0; i < menu->count; i++) |
| 2831 | if (menu->submenu[i]) |
| 2832 | { |
| 2833 | if (pane == menu->panenumber[i]) |
| 2834 | return menu->submenu[i]; |
| 2835 | try = tty_menu_search_pane (menu->submenu[i], pane); |
| 2836 | if (try) |
| 2837 | return try; |
| 2838 | } |
| 2839 | return (tty_menu *) 0; |
| 2840 | } |
| 2841 | |
| 2842 | /* Determine how much screen space a given menu needs. */ |
| 2843 | |
| 2844 | static void |
| 2845 | tty_menu_calc_size (tty_menu *menu, int *width, int *height) |
| 2846 | { |
| 2847 | int i, h2, w2, maxsubwidth, maxheight; |
| 2848 | |
| 2849 | maxsubwidth = menu->width; |
| 2850 | maxheight = menu->count; |
| 2851 | for (i = 0; i < menu->count; i++) |
| 2852 | { |
| 2853 | if (menu->submenu[i]) |
| 2854 | { |
| 2855 | tty_menu_calc_size (menu->submenu[i], &w2, &h2); |
| 2856 | if (w2 > maxsubwidth) maxsubwidth = w2; |
| 2857 | if (i + h2 > maxheight) maxheight = i + h2; |
| 2858 | } |
| 2859 | } |
| 2860 | *width = maxsubwidth; |
| 2861 | *height = maxheight; |
| 2862 | } |
| 2863 | |
| 2864 | static void |
| 2865 | mouse_get_xy (int *x, int *y) |
| 2866 | { |
| 2867 | struct frame *sf = SELECTED_FRAME (); |
| 2868 | Lisp_Object lmx = Qnil, lmy = Qnil, lisp_dummy; |
| 2869 | enum scroll_bar_part part_dummy; |
| 2870 | Time time_dummy; |
| 2871 | |
| 2872 | if (FRAME_TERMINAL (sf)->mouse_position_hook) |
| 2873 | (*FRAME_TERMINAL (sf)->mouse_position_hook) (&sf, -1, |
| 2874 | &lisp_dummy, &part_dummy, |
| 2875 | &lmx, &lmy, |
| 2876 | &time_dummy); |
| 2877 | if (!NILP (lmx)) |
| 2878 | { |
| 2879 | *x = XINT (lmx); |
| 2880 | *y = XINT (lmy); |
| 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | /* Display MENU at (X,Y) using FACES, starting with FIRST_ITEM |
| 2885 | (zero-based). */ |
| 2886 | |
| 2887 | static void |
| 2888 | tty_menu_display (tty_menu *menu, int x, int y, int pn, int *faces, |
| 2889 | int mx, int my, int first_item, bool disp_help) |
| 2890 | { |
| 2891 | int i, face, width, enabled, mousehere, row, col; |
| 2892 | struct frame *sf = SELECTED_FRAME (); |
| 2893 | struct tty_display_info *tty = FRAME_TTY (sf); |
| 2894 | /* Don't try to display more menu items than the console can display |
| 2895 | using the available screen lines. Exclude the echo area line, as |
| 2896 | it will be overwritten by the help-echo anyway. */ |
| 2897 | int max_items = min (menu->count - first_item, FRAME_LINES (sf) - 1 - y); |
| 2898 | |
| 2899 | menu_help_message = NULL; |
| 2900 | |
| 2901 | width = menu->width; |
| 2902 | col = cursorX (tty); |
| 2903 | row = cursorY (tty); |
| 2904 | for (i = 0; i < max_items; i++) |
| 2905 | { |
| 2906 | int max_width = width + 2; /* +2 for padding blanks on each side */ |
| 2907 | int j = i + first_item; |
| 2908 | |
| 2909 | if (menu->submenu[j]) |
| 2910 | max_width += 2; /* for displaying " >" after the item */ |
| 2911 | enabled |
| 2912 | = (!menu->submenu[j] && menu->panenumber[j]) || (menu->submenu[j]); |
| 2913 | mousehere = (y + i == my && x <= mx && mx < x + max_width); |
| 2914 | face = faces[enabled + mousehere * 2]; |
| 2915 | /* Display the menu help string for the i-th menu item even if |
| 2916 | the menu item is currently disabled. That's what the GUI |
| 2917 | code does. */ |
| 2918 | if (disp_help && enabled + mousehere * 2 >= 2) |
| 2919 | { |
| 2920 | menu_help_message = menu->help_text[j]; |
| 2921 | menu_help_paneno = pn - 1; |
| 2922 | menu_help_itemno = j; |
| 2923 | } |
| 2924 | /* Take note of the coordinates of the active menu item, to |
| 2925 | display the cursor there. */ |
| 2926 | if (mousehere) |
| 2927 | { |
| 2928 | row = y + i; |
| 2929 | col = x; |
| 2930 | } |
| 2931 | display_tty_menu_item (menu->text[j], max_width, face, x, y + i, |
| 2932 | menu->submenu[j] != NULL); |
| 2933 | } |
| 2934 | update_frame_with_menu (sf, row, col); |
| 2935 | } |
| 2936 | |
| 2937 | /* --------------------------- X Menu emulation ---------------------- */ |
| 2938 | |
| 2939 | /* Create a new pane and place it on the outer-most level. */ |
| 2940 | |
| 2941 | static int |
| 2942 | tty_menu_add_pane (tty_menu *menu, const char *txt) |
| 2943 | { |
| 2944 | int len; |
| 2945 | const unsigned char *p; |
| 2946 | |
| 2947 | tty_menu_make_room (menu); |
| 2948 | menu->submenu[menu->count] = tty_menu_create (); |
| 2949 | menu->text[menu->count] = (char *)txt; |
| 2950 | menu->panenumber[menu->count] = ++menu->panecount; |
| 2951 | menu->help_text[menu->count] = NULL; |
| 2952 | menu->count++; |
| 2953 | |
| 2954 | /* Update the menu width, if necessary. */ |
| 2955 | for (len = 0, p = (unsigned char *) txt; *p; ) |
| 2956 | { |
| 2957 | int ch_len; |
| 2958 | int ch = STRING_CHAR_AND_LENGTH (p, ch_len); |
| 2959 | |
| 2960 | len += CHAR_WIDTH (ch); |
| 2961 | p += ch_len; |
| 2962 | } |
| 2963 | |
| 2964 | if (len > menu->width) |
| 2965 | menu->width = len; |
| 2966 | |
| 2967 | return menu->panecount; |
| 2968 | } |
| 2969 | |
| 2970 | /* Create a new item in a menu pane. */ |
| 2971 | |
| 2972 | static bool |
| 2973 | tty_menu_add_selection (tty_menu *menu, int pane, |
| 2974 | char *txt, bool enable, char const *help_text) |
| 2975 | { |
| 2976 | int len; |
| 2977 | unsigned char *p; |
| 2978 | |
| 2979 | if (pane) |
| 2980 | { |
| 2981 | menu = tty_menu_search_pane (menu, pane); |
| 2982 | if (! menu) |
| 2983 | return 0; |
| 2984 | } |
| 2985 | tty_menu_make_room (menu); |
| 2986 | menu->submenu[menu->count] = (tty_menu *) 0; |
| 2987 | menu->text[menu->count] = txt; |
| 2988 | menu->panenumber[menu->count] = enable; |
| 2989 | menu->help_text[menu->count] = help_text; |
| 2990 | menu->count++; |
| 2991 | |
| 2992 | /* Update the menu width, if necessary. */ |
| 2993 | for (len = 0, p = (unsigned char *) txt; *p; ) |
| 2994 | { |
| 2995 | int ch_len; |
| 2996 | int ch = STRING_CHAR_AND_LENGTH (p, ch_len); |
| 2997 | |
| 2998 | len += CHAR_WIDTH (ch); |
| 2999 | p += ch_len; |
| 3000 | } |
| 3001 | |
| 3002 | if (len > menu->width) |
| 3003 | menu->width = len; |
| 3004 | |
| 3005 | return 1; |
| 3006 | } |
| 3007 | |
| 3008 | /* Decide where the menu would be placed if requested at (X,Y). */ |
| 3009 | |
| 3010 | static void |
| 3011 | tty_menu_locate (tty_menu *menu, int x, int y, |
| 3012 | int *ulx, int *uly, int *width, int *height) |
| 3013 | { |
| 3014 | tty_menu_calc_size (menu, width, height); |
| 3015 | *ulx = x + 1; |
| 3016 | *uly = y; |
| 3017 | *width += 2; |
| 3018 | } |
| 3019 | |
| 3020 | struct tty_menu_state |
| 3021 | { |
| 3022 | struct glyph_matrix *screen_behind; |
| 3023 | tty_menu *menu; |
| 3024 | int pane; |
| 3025 | int x, y; |
| 3026 | }; |
| 3027 | |
| 3028 | /* Save away the contents of frame F's current frame matrix, and |
| 3029 | enable all its rows. Value is a glyph matrix holding the contents |
| 3030 | of F's current frame matrix with all its glyph rows enabled. */ |
| 3031 | |
| 3032 | static struct glyph_matrix * |
| 3033 | save_and_enable_current_matrix (struct frame *f) |
| 3034 | { |
| 3035 | int i; |
| 3036 | struct glyph_matrix *saved = xzalloc (sizeof *saved); |
| 3037 | saved->nrows = f->current_matrix->nrows; |
| 3038 | saved->rows = xzalloc (saved->nrows * sizeof *saved->rows); |
| 3039 | |
| 3040 | for (i = 0; i < saved->nrows; ++i) |
| 3041 | { |
| 3042 | struct glyph_row *from = f->current_matrix->rows + i; |
| 3043 | struct glyph_row *to = saved->rows + i; |
| 3044 | ptrdiff_t nbytes = from->used[TEXT_AREA] * sizeof (struct glyph); |
| 3045 | |
| 3046 | to->glyphs[TEXT_AREA] = xmalloc (nbytes); |
| 3047 | memcpy (to->glyphs[TEXT_AREA], from->glyphs[TEXT_AREA], nbytes); |
| 3048 | to->used[TEXT_AREA] = from->used[TEXT_AREA]; |
| 3049 | /* Make sure every row is enabled, or else update_frame will not |
| 3050 | redraw them. (Rows that are identical to what is already on |
| 3051 | screen will not be redrawn anyway.) */ |
| 3052 | to->enabled_p = true; |
| 3053 | to->hash = from->hash; |
| 3054 | } |
| 3055 | |
| 3056 | return saved; |
| 3057 | } |
| 3058 | |
| 3059 | /* Restore the contents of frame F's desired frame matrix from SAVED, |
| 3060 | and free memory associated with SAVED. */ |
| 3061 | |
| 3062 | static void |
| 3063 | restore_desired_matrix (struct frame *f, struct glyph_matrix *saved) |
| 3064 | { |
| 3065 | int i; |
| 3066 | |
| 3067 | for (i = 0; i < saved->nrows; ++i) |
| 3068 | { |
| 3069 | struct glyph_row *from = saved->rows + i; |
| 3070 | struct glyph_row *to = f->desired_matrix->rows + i; |
| 3071 | ptrdiff_t nbytes = from->used[TEXT_AREA] * sizeof (struct glyph); |
| 3072 | |
| 3073 | eassert (to->glyphs[TEXT_AREA] != from->glyphs[TEXT_AREA]); |
| 3074 | memcpy (to->glyphs[TEXT_AREA], from->glyphs[TEXT_AREA], nbytes); |
| 3075 | to->used[TEXT_AREA] = from->used[TEXT_AREA]; |
| 3076 | to->enabled_p = from->enabled_p; |
| 3077 | to->hash = from->hash; |
| 3078 | } |
| 3079 | } |
| 3080 | |
| 3081 | static void |
| 3082 | free_saved_screen (struct glyph_matrix *saved) |
| 3083 | { |
| 3084 | int i; |
| 3085 | |
| 3086 | if (!saved) |
| 3087 | return; /* Already freed! */ |
| 3088 | |
| 3089 | for (i = 0; i < saved->nrows; ++i) |
| 3090 | { |
| 3091 | struct glyph_row *from = saved->rows + i; |
| 3092 | |
| 3093 | xfree (from->glyphs[TEXT_AREA]); |
| 3094 | } |
| 3095 | |
| 3096 | xfree (saved->rows); |
| 3097 | xfree (saved); |
| 3098 | } |
| 3099 | |
| 3100 | /* Update the display of frame F from its saved contents. */ |
| 3101 | static void |
| 3102 | screen_update (struct frame *f, struct glyph_matrix *mtx) |
| 3103 | { |
| 3104 | restore_desired_matrix (f, mtx); |
| 3105 | update_frame_with_menu (f, -1, -1); |
| 3106 | } |
| 3107 | |
| 3108 | typedef enum { |
| 3109 | MI_QUIT_MENU = -1, |
| 3110 | MI_CONTINUE = 0, |
| 3111 | MI_ITEM_SELECTED = 1, |
| 3112 | MI_NEXT_ITEM = 2, |
| 3113 | MI_PREV_ITEM = 3, |
| 3114 | MI_SCROLL_FORWARD = 4, |
| 3115 | MI_SCROLL_BACK = 5 |
| 3116 | } mi_result; |
| 3117 | |
| 3118 | /* Read user input and return X and Y coordinates where that input |
| 3119 | puts us. We only consider mouse movement and click events, and |
| 3120 | keyboard movement commands; the rest are ignored. */ |
| 3121 | static mi_result |
| 3122 | read_menu_input (struct frame *sf, int *x, int *y, int min_y, int max_y, |
| 3123 | bool *first_time) |
| 3124 | { |
| 3125 | if (*first_time) |
| 3126 | { |
| 3127 | *first_time = false; |
| 3128 | sf->mouse_moved = 1; |
| 3129 | } |
| 3130 | else |
| 3131 | { |
| 3132 | Lisp_Object cmd; |
| 3133 | bool usable_input = 1; |
| 3134 | mi_result st = MI_CONTINUE; |
| 3135 | struct tty_display_info *tty = FRAME_TTY (sf); |
| 3136 | Lisp_Object saved_mouse_tracking = do_mouse_tracking; |
| 3137 | |
| 3138 | /* Signal the keyboard reading routines we are displaying a menu |
| 3139 | on this terminal. */ |
| 3140 | tty->showing_menu = 1; |
| 3141 | /* We want mouse movements be reported by read_menu_command. */ |
| 3142 | do_mouse_tracking = Qt; |
| 3143 | do { |
| 3144 | cmd = read_menu_command (); |
| 3145 | } while (NILP (cmd)); |
| 3146 | tty->showing_menu = 0; |
| 3147 | do_mouse_tracking = saved_mouse_tracking; |
| 3148 | |
| 3149 | if (EQ (cmd, Qt) || EQ (cmd, Qtty_menu_exit) |
| 3150 | /* If some input switched frames under our feet, exit the |
| 3151 | menu, since the menu faces are no longer valid, and the |
| 3152 | menu is no longer relevant anyway. */ |
| 3153 | || sf != SELECTED_FRAME ()) |
| 3154 | return MI_QUIT_MENU; |
| 3155 | if (EQ (cmd, Qtty_menu_mouse_movement)) |
| 3156 | mouse_get_xy (x, y); |
| 3157 | else if (EQ (cmd, Qtty_menu_next_menu)) |
| 3158 | { |
| 3159 | usable_input = 0; |
| 3160 | st = MI_NEXT_ITEM; |
| 3161 | } |
| 3162 | else if (EQ (cmd, Qtty_menu_prev_menu)) |
| 3163 | { |
| 3164 | usable_input = 0; |
| 3165 | st = MI_PREV_ITEM; |
| 3166 | } |
| 3167 | else if (EQ (cmd, Qtty_menu_next_item)) |
| 3168 | { |
| 3169 | if (*y < max_y) |
| 3170 | *y += 1; |
| 3171 | else |
| 3172 | st = MI_SCROLL_FORWARD; |
| 3173 | } |
| 3174 | else if (EQ (cmd, Qtty_menu_prev_item)) |
| 3175 | { |
| 3176 | if (*y > min_y) |
| 3177 | *y -= 1; |
| 3178 | else |
| 3179 | st = MI_SCROLL_BACK; |
| 3180 | } |
| 3181 | else if (EQ (cmd, Qtty_menu_select)) |
| 3182 | st = MI_ITEM_SELECTED; |
| 3183 | else if (!EQ (cmd, Qtty_menu_ignore)) |
| 3184 | usable_input = 0; |
| 3185 | if (usable_input) |
| 3186 | sf->mouse_moved = 1; |
| 3187 | return st; |
| 3188 | } |
| 3189 | return MI_CONTINUE; |
| 3190 | } |
| 3191 | |
| 3192 | /* Display menu, wait for user's response, and return that response. */ |
| 3193 | static int |
| 3194 | tty_menu_activate (tty_menu *menu, int *pane, int *selidx, |
| 3195 | int x0, int y0, char **txt, |
| 3196 | void (*help_callback)(char const *, int, int), |
| 3197 | bool kbd_navigation) |
| 3198 | { |
| 3199 | struct tty_menu_state *state; |
| 3200 | int statecount, x, y, i; |
| 3201 | bool leave, onepane; |
| 3202 | int result IF_LINT (= 0); |
| 3203 | int title_faces[4]; /* Face to display the menu title. */ |
| 3204 | int faces[4], buffers_num_deleted = 0; |
| 3205 | struct frame *sf = SELECTED_FRAME (); |
| 3206 | struct tty_display_info *tty = FRAME_TTY (sf); |
| 3207 | bool first_time; |
| 3208 | Lisp_Object selectface; |
| 3209 | int first_item = 0; |
| 3210 | int col, row; |
| 3211 | |
| 3212 | /* Don't allow non-positive x0 and y0, lest the menu will wrap |
| 3213 | around the display. */ |
| 3214 | if (x0 <= 0) |
| 3215 | x0 = 1; |
| 3216 | if (y0 <= 0) |
| 3217 | y0 = 1; |
| 3218 | |
| 3219 | state = alloca (menu->panecount * sizeof (struct tty_menu_state)); |
| 3220 | memset (state, 0, sizeof (*state)); |
| 3221 | faces[0] |
| 3222 | = lookup_derived_face (sf, intern ("tty-menu-disabled-face"), |
| 3223 | DEFAULT_FACE_ID, 1); |
| 3224 | faces[1] |
| 3225 | = lookup_derived_face (sf, intern ("tty-menu-enabled-face"), |
| 3226 | DEFAULT_FACE_ID, 1); |
| 3227 | selectface = intern ("tty-menu-selected-face"); |
| 3228 | faces[2] = lookup_derived_face (sf, selectface, |
| 3229 | faces[0], 1); |
| 3230 | faces[3] = lookup_derived_face (sf, selectface, |
| 3231 | faces[1], 1); |
| 3232 | |
| 3233 | /* Make sure the menu title is always displayed with |
| 3234 | `tty-menu-selected-face', no matter where the mouse pointer is. */ |
| 3235 | for (i = 0; i < 4; i++) |
| 3236 | title_faces[i] = faces[3]; |
| 3237 | |
| 3238 | statecount = 1; |
| 3239 | |
| 3240 | /* Don't let the title for the "Buffers" popup menu include a |
| 3241 | digit (which is ugly). |
| 3242 | |
| 3243 | This is a terrible kludge, but I think the "Buffers" case is |
| 3244 | the only one where the title includes a number, so it doesn't |
| 3245 | seem to be necessary to make this more general. */ |
| 3246 | if (strncmp (menu->text[0], "Buffers 1", 9) == 0) |
| 3247 | { |
| 3248 | menu->text[0][7] = '\0'; |
| 3249 | buffers_num_deleted = 1; |
| 3250 | } |
| 3251 | |
| 3252 | /* Force update of the current frame, so that the desired and the |
| 3253 | current matrices are identical. */ |
| 3254 | update_frame_with_menu (sf, -1, -1); |
| 3255 | state[0].menu = menu; |
| 3256 | state[0].screen_behind = save_and_enable_current_matrix (sf); |
| 3257 | |
| 3258 | /* Display the menu title. We subtract 1 from x0 and y0 because we |
| 3259 | want to interpret them as zero-based column and row coordinates, |
| 3260 | and also because we want the first item of the menu, not its |
| 3261 | title, to appear at x0,y0. */ |
| 3262 | tty_menu_display (menu, x0 - 1, y0 - 1, 1, title_faces, x0 - 1, y0 - 1, 0, 0); |
| 3263 | |
| 3264 | /* Turn off the cursor. Otherwise it shows through the menu |
| 3265 | panes, which is ugly. */ |
| 3266 | col = cursorX (tty); |
| 3267 | row = cursorY (tty); |
| 3268 | tty_hide_cursor (tty); |
| 3269 | |
| 3270 | if (buffers_num_deleted) |
| 3271 | menu->text[0][7] = ' '; |
| 3272 | onepane = menu->count == 1 && menu->submenu[0]; |
| 3273 | if (onepane) |
| 3274 | { |
| 3275 | menu->width = menu->submenu[0]->width; |
| 3276 | state[0].menu = menu->submenu[0]; |
| 3277 | } |
| 3278 | else |
| 3279 | { |
| 3280 | state[0].menu = menu; |
| 3281 | } |
| 3282 | state[0].x = x0 - 1; |
| 3283 | state[0].y = y0; |
| 3284 | state[0].pane = onepane; |
| 3285 | |
| 3286 | x = state[0].x; |
| 3287 | y = state[0].y; |
| 3288 | first_time = true; |
| 3289 | |
| 3290 | leave = 0; |
| 3291 | while (!leave) |
| 3292 | { |
| 3293 | mi_result input_status; |
| 3294 | int min_y = state[0].y; |
| 3295 | int max_y = min (min_y + state[0].menu->count, FRAME_LINES (sf) - 1) - 1; |
| 3296 | |
| 3297 | input_status = read_menu_input (sf, &x, &y, min_y, max_y, &first_time); |
| 3298 | if (input_status) |
| 3299 | { |
| 3300 | leave = 1; |
| 3301 | switch (input_status) |
| 3302 | { |
| 3303 | case MI_QUIT_MENU: |
| 3304 | /* Remove the last help-echo, so that it doesn't |
| 3305 | re-appear after "Quit". */ |
| 3306 | show_help_echo (Qnil, Qnil, Qnil, Qnil); |
| 3307 | result = TTYM_NO_SELECT; |
| 3308 | break; |
| 3309 | case MI_NEXT_ITEM: |
| 3310 | if (kbd_navigation) |
| 3311 | result = TTYM_NEXT; |
| 3312 | else |
| 3313 | leave = 0; |
| 3314 | break; |
| 3315 | case MI_PREV_ITEM: |
| 3316 | if (kbd_navigation) |
| 3317 | result = TTYM_PREV; |
| 3318 | else |
| 3319 | leave = 0; |
| 3320 | break; |
| 3321 | case MI_SCROLL_FORWARD: |
| 3322 | if (y - min_y == state[0].menu->count - 1 - first_item) |
| 3323 | { |
| 3324 | y = min_y; |
| 3325 | first_item = 0; |
| 3326 | } |
| 3327 | else |
| 3328 | first_item++; |
| 3329 | leave = 0; |
| 3330 | break; |
| 3331 | case MI_SCROLL_BACK: |
| 3332 | if (first_item == 0) |
| 3333 | { |
| 3334 | y = max_y; |
| 3335 | first_item = state[0].menu->count - 1 - (y - min_y); |
| 3336 | } |
| 3337 | else |
| 3338 | first_item--; |
| 3339 | leave = 0; |
| 3340 | break; |
| 3341 | default: |
| 3342 | /* MI_ITEM_SELECTED is handled below, so nothing to do. */ |
| 3343 | break; |
| 3344 | } |
| 3345 | } |
| 3346 | if (sf->mouse_moved && input_status != MI_QUIT_MENU) |
| 3347 | { |
| 3348 | sf->mouse_moved = 0; |
| 3349 | result = TTYM_IA_SELECT; |
| 3350 | for (i = 0; i < statecount; i++) |
| 3351 | if (state[i].x <= x && x < state[i].x + state[i].menu->width + 2) |
| 3352 | { |
| 3353 | int dy = y - state[i].y + first_item; |
| 3354 | if (0 <= dy && dy < state[i].menu->count) |
| 3355 | { |
| 3356 | if (!state[i].menu->submenu[dy]) |
| 3357 | { |
| 3358 | if (state[i].menu->panenumber[dy]) |
| 3359 | result = TTYM_SUCCESS; |
| 3360 | else |
| 3361 | result = TTYM_IA_SELECT; |
| 3362 | } |
| 3363 | *pane = state[i].pane - 1; |
| 3364 | *selidx = dy; |
| 3365 | /* We hit some part of a menu, so drop extra menus that |
| 3366 | have been opened. That does not include an open and |
| 3367 | active submenu. */ |
| 3368 | if (i != statecount - 2 |
| 3369 | || state[i].menu->submenu[dy] != state[i + 1].menu) |
| 3370 | while (i != statecount - 1) |
| 3371 | { |
| 3372 | statecount--; |
| 3373 | screen_update (sf, state[statecount].screen_behind); |
| 3374 | state[statecount].screen_behind = NULL; |
| 3375 | } |
| 3376 | if (i == statecount - 1 && state[i].menu->submenu[dy]) |
| 3377 | { |
| 3378 | tty_menu_display (state[i].menu, |
| 3379 | state[i].x, |
| 3380 | state[i].y, |
| 3381 | state[i].pane, |
| 3382 | faces, x, y, first_item, 1); |
| 3383 | state[statecount].menu = state[i].menu->submenu[dy]; |
| 3384 | state[statecount].pane = state[i].menu->panenumber[dy]; |
| 3385 | state[statecount].screen_behind |
| 3386 | = save_and_enable_current_matrix (sf); |
| 3387 | state[statecount].x |
| 3388 | = state[i].x + state[i].menu->width + 2; |
| 3389 | state[statecount].y = y; |
| 3390 | statecount++; |
| 3391 | } |
| 3392 | } |
| 3393 | } |
| 3394 | tty_menu_display (state[statecount - 1].menu, |
| 3395 | state[statecount - 1].x, |
| 3396 | state[statecount - 1].y, |
| 3397 | state[statecount - 1].pane, |
| 3398 | faces, x, y, first_item, 1); |
| 3399 | /* The call to display help-echo below will move the cursor, |
| 3400 | so remember its current position as computed by |
| 3401 | tty_menu_display. */ |
| 3402 | col = cursorX (tty); |
| 3403 | row = cursorY (tty); |
| 3404 | } |
| 3405 | |
| 3406 | /* Display the help-echo message for the currently-selected menu |
| 3407 | item. */ |
| 3408 | if ((menu_help_message || prev_menu_help_message) |
| 3409 | && menu_help_message != prev_menu_help_message) |
| 3410 | { |
| 3411 | help_callback (menu_help_message, |
| 3412 | menu_help_paneno, menu_help_itemno); |
| 3413 | /* Move the cursor to the beginning of the current menu |
| 3414 | item, so that screen readers and other accessibility aids |
| 3415 | know where the active region is. */ |
| 3416 | cursor_to (sf, row, col); |
| 3417 | prev_menu_help_message = menu_help_message; |
| 3418 | } |
| 3419 | /* Both tty_menu_display and help_callback invoke update_end, |
| 3420 | which calls tty_show_cursor. Re-hide it, so it doesn't show |
| 3421 | through the menus. */ |
| 3422 | tty_hide_cursor (tty); |
| 3423 | fflush (tty->output); |
| 3424 | } |
| 3425 | |
| 3426 | sf->mouse_moved = 0; |
| 3427 | screen_update (sf, state[0].screen_behind); |
| 3428 | while (statecount--) |
| 3429 | free_saved_screen (state[statecount].screen_behind); |
| 3430 | tty_show_cursor (tty); /* Turn cursor back on. */ |
| 3431 | fflush (tty->output); |
| 3432 | |
| 3433 | /* Clean up any mouse events that are waiting inside Emacs event queue. |
| 3434 | These events are likely to be generated before the menu was even |
| 3435 | displayed, probably because the user pressed and released the button |
| 3436 | (which invoked the menu) too quickly. If we don't remove these events, |
| 3437 | Emacs will process them after we return and surprise the user. */ |
| 3438 | discard_mouse_events (); |
| 3439 | if (!kbd_buffer_events_waiting ()) |
| 3440 | clear_input_pending (); |
| 3441 | return result; |
| 3442 | } |
| 3443 | |
| 3444 | /* Dispose of a menu. */ |
| 3445 | |
| 3446 | static void |
| 3447 | tty_menu_destroy (tty_menu *menu) |
| 3448 | { |
| 3449 | int i; |
| 3450 | if (menu->allocated) |
| 3451 | { |
| 3452 | for (i = 0; i < menu->count; i++) |
| 3453 | if (menu->submenu[i]) |
| 3454 | tty_menu_destroy (menu->submenu[i]); |
| 3455 | xfree (menu->text); |
| 3456 | xfree (menu->submenu); |
| 3457 | xfree (menu->panenumber); |
| 3458 | xfree (menu->help_text); |
| 3459 | } |
| 3460 | xfree (menu); |
| 3461 | menu_help_message = prev_menu_help_message = NULL; |
| 3462 | } |
| 3463 | |
| 3464 | /* Show help HELP_STRING, or clear help if HELP_STRING is null. |
| 3465 | |
| 3466 | PANE is the pane number, and ITEM is the menu item number in |
| 3467 | the menu (currently not used). */ |
| 3468 | |
| 3469 | static void |
| 3470 | tty_menu_help_callback (char const *help_string, int pane, int item) |
| 3471 | { |
| 3472 | Lisp_Object *first_item; |
| 3473 | Lisp_Object pane_name; |
| 3474 | Lisp_Object menu_object; |
| 3475 | |
| 3476 | first_item = XVECTOR (menu_items)->contents; |
| 3477 | if (EQ (first_item[0], Qt)) |
| 3478 | pane_name = first_item[MENU_ITEMS_PANE_NAME]; |
| 3479 | else if (EQ (first_item[0], Qquote)) |
| 3480 | /* This shouldn't happen, see xmenu_show. */ |
| 3481 | pane_name = empty_unibyte_string; |
| 3482 | else |
| 3483 | pane_name = first_item[MENU_ITEMS_ITEM_NAME]; |
| 3484 | |
| 3485 | /* (menu-item MENU-NAME PANE-NUMBER) */ |
| 3486 | menu_object = list3 (Qmenu_item, pane_name, make_number (pane)); |
| 3487 | show_help_echo (help_string ? build_string (help_string) : Qnil, |
| 3488 | Qnil, menu_object, make_number (item)); |
| 3489 | } |
| 3490 | |
| 3491 | static void |
| 3492 | tty_pop_down_menu (Lisp_Object arg) |
| 3493 | { |
| 3494 | tty_menu *menu = XSAVE_POINTER (arg, 0); |
| 3495 | |
| 3496 | block_input (); |
| 3497 | tty_menu_destroy (menu); |
| 3498 | unblock_input (); |
| 3499 | } |
| 3500 | |
| 3501 | /* Return the zero-based index of the last menu-bar item on frame F. */ |
| 3502 | static int |
| 3503 | tty_menu_last_menubar_item (struct frame *f) |
| 3504 | { |
| 3505 | int i = 0; |
| 3506 | |
| 3507 | eassert (FRAME_TERMCAP_P (f) && FRAME_LIVE_P (f)); |
| 3508 | if (FRAME_TERMCAP_P (f) && FRAME_LIVE_P (f)) |
| 3509 | { |
| 3510 | Lisp_Object items = FRAME_MENU_BAR_ITEMS (f); |
| 3511 | |
| 3512 | while (i < ASIZE (items)) |
| 3513 | { |
| 3514 | Lisp_Object str; |
| 3515 | |
| 3516 | str = AREF (items, i + 1); |
| 3517 | if (NILP (str)) |
| 3518 | break; |
| 3519 | i += 4; |
| 3520 | } |
| 3521 | i -= 4; /* Went one too far! */ |
| 3522 | } |
| 3523 | return i; |
| 3524 | } |
| 3525 | |
| 3526 | /* Find in frame F's menu bar the menu item that is next or previous |
| 3527 | to the item at X/Y, and return that item's position in X/Y. WHICH |
| 3528 | says which one--next or previous--item to look for. X and Y are |
| 3529 | measured in character cells. This should only be called on TTY |
| 3530 | frames. */ |
| 3531 | static void |
| 3532 | tty_menu_new_item_coords (struct frame *f, int which, int *x, int *y) |
| 3533 | { |
| 3534 | eassert (FRAME_TERMCAP_P (f) && FRAME_LIVE_P (f)); |
| 3535 | if (FRAME_TERMCAP_P (f) && FRAME_LIVE_P (f)) |
| 3536 | { |
| 3537 | Lisp_Object items = FRAME_MENU_BAR_ITEMS (f); |
| 3538 | int last_i = tty_menu_last_menubar_item (f); |
| 3539 | int i, prev_x; |
| 3540 | |
| 3541 | /* This loop assumes a single menu-bar line, and will fail to |
| 3542 | find an item if it is not in the first line. Note that |
| 3543 | make_lispy_event in keyboard.c makes the same assumption. */ |
| 3544 | for (i = 0, prev_x = -1; i < ASIZE (items); i += 4) |
| 3545 | { |
| 3546 | Lisp_Object pos, str; |
| 3547 | int ix; |
| 3548 | |
| 3549 | str = AREF (items, i + 1); |
| 3550 | pos = AREF (items, i + 3); |
| 3551 | if (NILP (str)) |
| 3552 | return; |
| 3553 | ix = XINT (pos); |
| 3554 | if (ix <= *x |
| 3555 | /* We use <= so the blank between 2 items on a TTY is |
| 3556 | considered part of the previous item. */ |
| 3557 | && *x <= ix + menu_item_width (SDATA (str))) |
| 3558 | { |
| 3559 | /* Found current item. Now compute the X coordinate of |
| 3560 | the previous or next item. */ |
| 3561 | if (which == TTYM_NEXT) |
| 3562 | { |
| 3563 | if (i < last_i) |
| 3564 | *x = XINT (AREF (items, i + 4 + 3)); |
| 3565 | else |
| 3566 | *x = 0; /* Wrap around to the first item. */ |
| 3567 | } |
| 3568 | else if (prev_x < 0) |
| 3569 | { |
| 3570 | /* Wrap around to the last item. */ |
| 3571 | *x = XINT (AREF (items, last_i + 3)); |
| 3572 | } |
| 3573 | else |
| 3574 | *x = prev_x; |
| 3575 | return; |
| 3576 | } |
| 3577 | prev_x = ix; |
| 3578 | } |
| 3579 | } |
| 3580 | } |
| 3581 | |
| 3582 | /* WINDOWSNT uses this as menu_show_hook, see w32console.c. */ |
| 3583 | Lisp_Object |
| 3584 | tty_menu_show (struct frame *f, int x, int y, int menuflags, |
| 3585 | Lisp_Object title, const char **error_name) |
| 3586 | { |
| 3587 | tty_menu *menu; |
| 3588 | int pane, selidx, lpane, status; |
| 3589 | Lisp_Object entry, pane_prefix; |
| 3590 | char *datap; |
| 3591 | int ulx, uly, width, height; |
| 3592 | int item_x, item_y; |
| 3593 | int dispwidth, dispheight; |
| 3594 | int i, j, lines, maxlines; |
| 3595 | int maxwidth; |
| 3596 | ptrdiff_t specpdl_count; |
| 3597 | |
| 3598 | eassert (FRAME_TERMCAP_P (f)); |
| 3599 | |
| 3600 | *error_name = 0; |
| 3601 | if (menu_items_n_panes == 0) |
| 3602 | return Qnil; |
| 3603 | |
| 3604 | if (menu_items_used <= MENU_ITEMS_PANE_LENGTH) |
| 3605 | { |
| 3606 | *error_name = "Empty menu"; |
| 3607 | return Qnil; |
| 3608 | } |
| 3609 | |
| 3610 | /* Make the menu on that window. */ |
| 3611 | menu = tty_menu_create (); |
| 3612 | if (menu == NULL) |
| 3613 | { |
| 3614 | *error_name = "Can't create menu"; |
| 3615 | return Qnil; |
| 3616 | } |
| 3617 | |
| 3618 | dynwind_begin (); |
| 3619 | |
| 3620 | /* Avoid crashes if, e.g., another client will connect while we |
| 3621 | are in a menu. */ |
| 3622 | temporarily_switch_to_single_kboard (f); |
| 3623 | |
| 3624 | /* Adjust coordinates to be root-window-relative. */ |
| 3625 | item_x = x += f->left_pos; |
| 3626 | item_y = y += f->top_pos; |
| 3627 | |
| 3628 | /* Create all the necessary panes and their items. */ |
| 3629 | maxwidth = maxlines = lines = i = 0; |
| 3630 | lpane = TTYM_FAILURE; |
| 3631 | while (i < menu_items_used) |
| 3632 | { |
| 3633 | if (EQ (AREF (menu_items, i), Qt)) |
| 3634 | { |
| 3635 | /* Create a new pane. */ |
| 3636 | Lisp_Object pane_name, prefix; |
| 3637 | const char *pane_string; |
| 3638 | |
| 3639 | maxlines = max (maxlines, lines); |
| 3640 | lines = 0; |
| 3641 | pane_name = AREF (menu_items, i + MENU_ITEMS_PANE_NAME); |
| 3642 | prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 3643 | pane_string = (NILP (pane_name) |
| 3644 | ? "" : SSDATA (pane_name)); |
| 3645 | if ((menuflags & MENU_KEYMAPS) && !NILP (prefix)) |
| 3646 | pane_string++; |
| 3647 | |
| 3648 | lpane = tty_menu_add_pane (menu, pane_string); |
| 3649 | if (lpane == TTYM_FAILURE) |
| 3650 | { |
| 3651 | tty_menu_destroy (menu); |
| 3652 | *error_name = "Can't create pane"; |
| 3653 | entry = Qnil; |
| 3654 | goto tty_menu_end; |
| 3655 | } |
| 3656 | i += MENU_ITEMS_PANE_LENGTH; |
| 3657 | |
| 3658 | /* Find the width of the widest item in this pane. */ |
| 3659 | j = i; |
| 3660 | while (j < menu_items_used) |
| 3661 | { |
| 3662 | Lisp_Object item; |
| 3663 | item = AREF (menu_items, j); |
| 3664 | if (EQ (item, Qt)) |
| 3665 | break; |
| 3666 | if (NILP (item)) |
| 3667 | { |
| 3668 | j++; |
| 3669 | continue; |
| 3670 | } |
| 3671 | width = SBYTES (item); |
| 3672 | if (width > maxwidth) |
| 3673 | maxwidth = width; |
| 3674 | |
| 3675 | j += MENU_ITEMS_ITEM_LENGTH; |
| 3676 | } |
| 3677 | } |
| 3678 | /* Ignore a nil in the item list. |
| 3679 | It's meaningful only for dialog boxes. */ |
| 3680 | else if (EQ (AREF (menu_items, i), Qquote)) |
| 3681 | i += 1; |
| 3682 | else |
| 3683 | { |
| 3684 | /* Create a new item within current pane. */ |
| 3685 | Lisp_Object item_name, enable, descrip, help; |
| 3686 | char *item_data; |
| 3687 | char const *help_string; |
| 3688 | |
| 3689 | item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME); |
| 3690 | enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE); |
| 3691 | descrip = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY); |
| 3692 | help = AREF (menu_items, i + MENU_ITEMS_ITEM_HELP); |
| 3693 | help_string = STRINGP (help) ? SSDATA (help) : NULL; |
| 3694 | |
| 3695 | if (!NILP (descrip)) |
| 3696 | { |
| 3697 | /* If alloca is fast, use that to make the space, |
| 3698 | to reduce gc needs. */ |
| 3699 | item_data = (char *) alloca (maxwidth + SBYTES (descrip) + 1); |
| 3700 | memcpy (item_data, SSDATA (item_name), SBYTES (item_name)); |
| 3701 | for (j = SCHARS (item_name); j < maxwidth; j++) |
| 3702 | item_data[j] = ' '; |
| 3703 | memcpy (item_data + j, SSDATA (descrip), SBYTES (descrip)); |
| 3704 | item_data[j + SBYTES (descrip)] = 0; |
| 3705 | } |
| 3706 | else |
| 3707 | item_data = SSDATA (item_name); |
| 3708 | |
| 3709 | if (lpane == TTYM_FAILURE |
| 3710 | || (! tty_menu_add_selection (menu, lpane, item_data, |
| 3711 | !NILP (enable), help_string))) |
| 3712 | { |
| 3713 | tty_menu_destroy (menu); |
| 3714 | *error_name = "Can't add selection to menu"; |
| 3715 | entry = Qnil; |
| 3716 | goto tty_menu_end; |
| 3717 | } |
| 3718 | i += MENU_ITEMS_ITEM_LENGTH; |
| 3719 | lines++; |
| 3720 | } |
| 3721 | } |
| 3722 | |
| 3723 | maxlines = max (maxlines, lines); |
| 3724 | |
| 3725 | /* All set and ready to fly. */ |
| 3726 | dispwidth = f->text_cols; |
| 3727 | dispheight = f->text_lines; |
| 3728 | x = min (x, dispwidth); |
| 3729 | y = min (y, dispheight); |
| 3730 | x = max (x, 1); |
| 3731 | y = max (y, 1); |
| 3732 | tty_menu_locate (menu, x, y, &ulx, &uly, &width, &height); |
| 3733 | if (ulx + width > dispwidth) |
| 3734 | { |
| 3735 | x -= (ulx + width) - dispwidth; |
| 3736 | ulx = dispwidth - width; |
| 3737 | } |
| 3738 | if (uly + height > dispheight) |
| 3739 | { |
| 3740 | y -= (uly + height) - dispheight; |
| 3741 | uly = dispheight - height; |
| 3742 | } |
| 3743 | |
| 3744 | if (FRAME_HAS_MINIBUF_P (f) && uly + height > dispheight - 2) |
| 3745 | { |
| 3746 | /* Move the menu away of the echo area, to avoid overwriting the |
| 3747 | menu with help echo messages or vice versa. */ |
| 3748 | if (BUFFERP (echo_area_buffer[0]) && WINDOWP (echo_area_window)) |
| 3749 | { |
| 3750 | y -= WINDOW_TOTAL_LINES (XWINDOW (echo_area_window)) + 1; |
| 3751 | uly -= WINDOW_TOTAL_LINES (XWINDOW (echo_area_window)) + 1; |
| 3752 | } |
| 3753 | else |
| 3754 | { |
| 3755 | y -= 2; |
| 3756 | uly -= 2; |
| 3757 | } |
| 3758 | } |
| 3759 | |
| 3760 | if (ulx < 0) x -= ulx; |
| 3761 | if (uly < 0) y -= uly; |
| 3762 | |
| 3763 | #if 0 |
| 3764 | /* This code doesn't make sense on a TTY, since it can easily annul |
| 3765 | the adjustments above that carefully avoid truncation of the menu |
| 3766 | items. I think it was written to fix some problem that only |
| 3767 | happens on X11. */ |
| 3768 | if (! for_click) |
| 3769 | { |
| 3770 | /* If position was not given by a mouse click, adjust so upper left |
| 3771 | corner of the menu as a whole ends up at given coordinates. This |
| 3772 | is what x-popup-menu says in its documentation. */ |
| 3773 | x += width / 2; |
| 3774 | y += 1.5 * height / (maxlines + 2); |
| 3775 | } |
| 3776 | #endif |
| 3777 | |
| 3778 | pane = selidx = 0; |
| 3779 | |
| 3780 | record_unwind_protect (tty_pop_down_menu, make_save_ptr (menu)); |
| 3781 | |
| 3782 | specbind (Qoverriding_terminal_local_map, |
| 3783 | Fsymbol_value (Qtty_menu_navigation_map)); |
| 3784 | status = tty_menu_activate (menu, &pane, &selidx, x, y, &datap, |
| 3785 | tty_menu_help_callback, |
| 3786 | menuflags & MENU_KBD_NAVIGATION); |
| 3787 | entry = pane_prefix = Qnil; |
| 3788 | |
| 3789 | switch (status) |
| 3790 | { |
| 3791 | case TTYM_SUCCESS: |
| 3792 | /* Find the item number SELIDX in pane number PANE. */ |
| 3793 | i = 0; |
| 3794 | while (i < menu_items_used) |
| 3795 | { |
| 3796 | if (EQ (AREF (menu_items, i), Qt)) |
| 3797 | { |
| 3798 | if (pane == 0) |
| 3799 | pane_prefix |
| 3800 | = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 3801 | pane--; |
| 3802 | i += MENU_ITEMS_PANE_LENGTH; |
| 3803 | } |
| 3804 | else |
| 3805 | { |
| 3806 | if (pane == -1) |
| 3807 | { |
| 3808 | if (selidx == 0) |
| 3809 | { |
| 3810 | entry |
| 3811 | = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE); |
| 3812 | if (menuflags & MENU_KEYMAPS) |
| 3813 | { |
| 3814 | entry = Fcons (entry, Qnil); |
| 3815 | if (!NILP (pane_prefix)) |
| 3816 | entry = Fcons (pane_prefix, entry); |
| 3817 | } |
| 3818 | break; |
| 3819 | } |
| 3820 | selidx--; |
| 3821 | } |
| 3822 | i += MENU_ITEMS_ITEM_LENGTH; |
| 3823 | } |
| 3824 | } |
| 3825 | break; |
| 3826 | |
| 3827 | case TTYM_NEXT: |
| 3828 | case TTYM_PREV: |
| 3829 | tty_menu_new_item_coords (f, status, &item_x, &item_y); |
| 3830 | entry = Fcons (make_number (item_x), make_number (item_y)); |
| 3831 | break; |
| 3832 | |
| 3833 | case TTYM_FAILURE: |
| 3834 | *error_name = "Can't activate menu"; |
| 3835 | case TTYM_IA_SELECT: |
| 3836 | break; |
| 3837 | case TTYM_NO_SELECT: |
| 3838 | /* If the selected frame was changed while we displayed a menu, |
| 3839 | throw to top level in order to undo any temporary settings |
| 3840 | made by TTY menu code. */ |
| 3841 | if (f != SELECTED_FRAME ()) |
| 3842 | Ftop_level (); |
| 3843 | /* Make "Cancel" equivalent to C-g unless FOR_CLICK (which means |
| 3844 | the menu was invoked with a mouse event as POSITION). */ |
| 3845 | if (!(menuflags & MENU_FOR_CLICK)) |
| 3846 | Fsignal (Qquit, Qnil); |
| 3847 | break; |
| 3848 | } |
| 3849 | |
| 3850 | tty_menu_end: |
| 3851 | |
| 3852 | dynwind_end (); |
| 3853 | return entry; |
| 3854 | } |
| 3855 | |
| 3856 | #endif /* !MSDOS */ |
| 3857 | |
| 3858 | \f |
| 3859 | #ifndef MSDOS |
| 3860 | /*********************************************************************** |
| 3861 | Initialization |
| 3862 | ***********************************************************************/ |
| 3863 | |
| 3864 | /* Initialize the tty-dependent part of frame F. The frame must |
| 3865 | already have its device initialized. */ |
| 3866 | |
| 3867 | void |
| 3868 | create_tty_output (struct frame *f) |
| 3869 | { |
| 3870 | struct tty_output *t = xzalloc (sizeof *t); |
| 3871 | |
| 3872 | eassert (FRAME_TERMCAP_P (f)); |
| 3873 | |
| 3874 | t->display_info = FRAME_TERMINAL (f)->display_info.tty; |
| 3875 | |
| 3876 | f->output_data.tty = t; |
| 3877 | } |
| 3878 | |
| 3879 | /* Delete frame F's face cache, and its tty-dependent part. */ |
| 3880 | |
| 3881 | static void |
| 3882 | tty_free_frame_resources (struct frame *f) |
| 3883 | { |
| 3884 | eassert (FRAME_TERMCAP_P (f)); |
| 3885 | free_frame_faces (f); |
| 3886 | xfree (f->output_data.tty); |
| 3887 | } |
| 3888 | |
| 3889 | #else /* MSDOS */ |
| 3890 | |
| 3891 | /* Delete frame F's face cache. */ |
| 3892 | |
| 3893 | static void |
| 3894 | tty_free_frame_resources (struct frame *f) |
| 3895 | { |
| 3896 | eassert (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f)); |
| 3897 | free_frame_faces (f); |
| 3898 | } |
| 3899 | #endif /* MSDOS */ |
| 3900 | \f |
| 3901 | /* Reset the hooks in TERMINAL. */ |
| 3902 | |
| 3903 | static void |
| 3904 | clear_tty_hooks (struct terminal *terminal) |
| 3905 | { |
| 3906 | terminal->rif = 0; |
| 3907 | terminal->cursor_to_hook = 0; |
| 3908 | terminal->raw_cursor_to_hook = 0; |
| 3909 | terminal->clear_to_end_hook = 0; |
| 3910 | terminal->clear_frame_hook = 0; |
| 3911 | terminal->clear_end_of_line_hook = 0; |
| 3912 | terminal->ins_del_lines_hook = 0; |
| 3913 | terminal->insert_glyphs_hook = 0; |
| 3914 | terminal->write_glyphs_hook = 0; |
| 3915 | terminal->delete_glyphs_hook = 0; |
| 3916 | terminal->ring_bell_hook = 0; |
| 3917 | terminal->reset_terminal_modes_hook = 0; |
| 3918 | terminal->set_terminal_modes_hook = 0; |
| 3919 | terminal->update_begin_hook = 0; |
| 3920 | terminal->update_end_hook = 0; |
| 3921 | terminal->set_terminal_window_hook = 0; |
| 3922 | terminal->mouse_position_hook = 0; |
| 3923 | terminal->frame_rehighlight_hook = 0; |
| 3924 | terminal->frame_raise_lower_hook = 0; |
| 3925 | terminal->fullscreen_hook = 0; |
| 3926 | terminal->menu_show_hook = 0; |
| 3927 | terminal->set_vertical_scroll_bar_hook = 0; |
| 3928 | terminal->condemn_scroll_bars_hook = 0; |
| 3929 | terminal->redeem_scroll_bar_hook = 0; |
| 3930 | terminal->judge_scroll_bars_hook = 0; |
| 3931 | terminal->read_socket_hook = 0; |
| 3932 | terminal->frame_up_to_date_hook = 0; |
| 3933 | |
| 3934 | /* Leave these two set, or suspended frames are not deleted |
| 3935 | correctly. */ |
| 3936 | terminal->delete_frame_hook = &tty_free_frame_resources; |
| 3937 | terminal->delete_terminal_hook = &delete_tty; |
| 3938 | } |
| 3939 | |
| 3940 | /* Initialize hooks in TERMINAL with the values needed for a tty. */ |
| 3941 | |
| 3942 | static void |
| 3943 | set_tty_hooks (struct terminal *terminal) |
| 3944 | { |
| 3945 | terminal->cursor_to_hook = &tty_cursor_to; |
| 3946 | terminal->raw_cursor_to_hook = &tty_raw_cursor_to; |
| 3947 | terminal->clear_to_end_hook = &tty_clear_to_end; |
| 3948 | terminal->clear_frame_hook = &tty_clear_frame; |
| 3949 | terminal->clear_end_of_line_hook = &tty_clear_end_of_line; |
| 3950 | terminal->ins_del_lines_hook = &tty_ins_del_lines; |
| 3951 | terminal->insert_glyphs_hook = &tty_insert_glyphs; |
| 3952 | terminal->write_glyphs_hook = &tty_write_glyphs; |
| 3953 | terminal->delete_glyphs_hook = &tty_delete_glyphs; |
| 3954 | terminal->ring_bell_hook = &tty_ring_bell; |
| 3955 | terminal->reset_terminal_modes_hook = &tty_reset_terminal_modes; |
| 3956 | terminal->set_terminal_modes_hook = &tty_set_terminal_modes; |
| 3957 | terminal->update_end_hook = &tty_update_end; |
| 3958 | terminal->menu_show_hook = &tty_menu_show; |
| 3959 | terminal->set_terminal_window_hook = &tty_set_terminal_window; |
| 3960 | terminal->read_socket_hook = &tty_read_avail_input; /* keyboard.c */ |
| 3961 | terminal->delete_frame_hook = &tty_free_frame_resources; |
| 3962 | terminal->delete_terminal_hook = &delete_tty; |
| 3963 | /* Other hooks are NULL by default. */ |
| 3964 | } |
| 3965 | |
| 3966 | /* If FD is the controlling terminal, drop it. */ |
| 3967 | static void |
| 3968 | dissociate_if_controlling_tty (int fd) |
| 3969 | { |
| 3970 | /* If tcgetpgrp succeeds, fd is the controlling terminal, |
| 3971 | so dissociate it by invoking setsid. */ |
| 3972 | if (tcgetpgrp (fd) >= 0 && setsid () < 0) |
| 3973 | { |
| 3974 | #ifdef TIOCNOTTY |
| 3975 | /* setsid failed, presumably because Emacs is already a process |
| 3976 | group leader. Fall back on the obsolescent way to dissociate |
| 3977 | a controlling tty. */ |
| 3978 | sigset_t oldset; |
| 3979 | block_tty_out_signal (&oldset); |
| 3980 | ioctl (fd, TIOCNOTTY, 0); |
| 3981 | unblock_tty_out_signal (&oldset); |
| 3982 | #endif |
| 3983 | } |
| 3984 | } |
| 3985 | |
| 3986 | /* Create a termcap display on the tty device with the given name and |
| 3987 | type. |
| 3988 | |
| 3989 | If NAME is NULL, then use the controlling tty, i.e., "/dev/tty". |
| 3990 | Otherwise NAME should be a path to the tty device file, |
| 3991 | e.g. "/dev/pts/7". |
| 3992 | |
| 3993 | TERMINAL_TYPE is the termcap type of the device, e.g. "vt100". |
| 3994 | |
| 3995 | If MUST_SUCCEED is true, then all errors are fatal. */ |
| 3996 | |
| 3997 | struct terminal * |
| 3998 | init_tty (const char *name, const char *terminal_type, bool must_succeed) |
| 3999 | { |
| 4000 | char *area; |
| 4001 | char **address = &area; |
| 4002 | int status; |
| 4003 | struct tty_display_info *tty = NULL; |
| 4004 | struct terminal *terminal = NULL; |
| 4005 | sigset_t oldset; |
| 4006 | bool ctty = false; /* True if asked to open controlling tty. */ |
| 4007 | |
| 4008 | if (!terminal_type) |
| 4009 | maybe_fatal (must_succeed, 0, |
| 4010 | "Unknown terminal type", |
| 4011 | "Unknown terminal type"); |
| 4012 | |
| 4013 | if (name == NULL) |
| 4014 | name = DEV_TTY; |
| 4015 | if (!strcmp (name, DEV_TTY)) |
| 4016 | ctty = 1; |
| 4017 | |
| 4018 | /* If we already have a terminal on the given device, use that. If |
| 4019 | all such terminals are suspended, create a new one instead. */ |
| 4020 | /* XXX Perhaps this should be made explicit by having init_tty |
| 4021 | always create a new terminal and separating terminal and frame |
| 4022 | creation on Lisp level. */ |
| 4023 | terminal = get_named_tty (name); |
| 4024 | if (terminal) |
| 4025 | return terminal; |
| 4026 | |
| 4027 | terminal = create_terminal (output_termcap, NULL); |
| 4028 | #ifdef MSDOS |
| 4029 | if (been_here > 0) |
| 4030 | maybe_fatal (0, 0, "Attempt to create another terminal %s", "", |
| 4031 | name, ""); |
| 4032 | been_here = 1; |
| 4033 | tty = &the_only_display_info; |
| 4034 | #else |
| 4035 | tty = xzalloc (sizeof *tty); |
| 4036 | #endif |
| 4037 | tty->top_frame = Qnil; |
| 4038 | tty->next = tty_list; |
| 4039 | tty_list = tty; |
| 4040 | |
| 4041 | terminal->display_info.tty = tty; |
| 4042 | tty->terminal = terminal; |
| 4043 | |
| 4044 | tty->Wcm = xmalloc (sizeof *tty->Wcm); |
| 4045 | Wcm_clear (tty); |
| 4046 | |
| 4047 | encode_terminal_src_size = 0; |
| 4048 | encode_terminal_dst_size = 0; |
| 4049 | |
| 4050 | |
| 4051 | #ifndef DOS_NT |
| 4052 | set_tty_hooks (terminal); |
| 4053 | |
| 4054 | { |
| 4055 | /* Open the terminal device. */ |
| 4056 | |
| 4057 | /* If !ctty, don't recognize it as our controlling terminal, and |
| 4058 | don't make it the controlling tty if we don't have one now. |
| 4059 | |
| 4060 | Alas, O_IGNORE_CTTY is a GNU extension that seems to be only |
| 4061 | defined on Hurd. On other systems, we need to explicitly |
| 4062 | dissociate ourselves from the controlling tty when we want to |
| 4063 | open a frame on the same terminal. */ |
| 4064 | int flags = O_RDWR | O_NOCTTY | (ctty ? 0 : O_IGNORE_CTTY); |
| 4065 | int fd = emacs_open (name, flags, 0); |
| 4066 | tty->input = tty->output = |
| 4067 | ((fd < 0 || ! isatty (fd)) |
| 4068 | ? NULL |
| 4069 | : fdopen (fd, "w+")); |
| 4070 | |
| 4071 | if (! tty->input) |
| 4072 | { |
| 4073 | char const *diagnostic |
| 4074 | = (fd < 0) ? "Could not open file: %s" : "Not a tty device: %s"; |
| 4075 | emacs_close (fd); |
| 4076 | maybe_fatal (must_succeed, terminal, diagnostic, diagnostic, name); |
| 4077 | } |
| 4078 | |
| 4079 | tty->name = xstrdup (name); |
| 4080 | terminal->name = xstrdup (name); |
| 4081 | |
| 4082 | if (!O_IGNORE_CTTY && !ctty) |
| 4083 | dissociate_if_controlling_tty (fd); |
| 4084 | } |
| 4085 | |
| 4086 | tty->type = xstrdup (terminal_type); |
| 4087 | |
| 4088 | add_keyboard_wait_descriptor (fileno (tty->input)); |
| 4089 | |
| 4090 | Wcm_clear (tty); |
| 4091 | |
| 4092 | /* On some systems, tgetent tries to access the controlling |
| 4093 | terminal. */ |
| 4094 | block_tty_out_signal (&oldset); |
| 4095 | status = tgetent (tty->termcap_term_buffer, terminal_type); |
| 4096 | if (tty->termcap_term_buffer[TERMCAP_BUFFER_SIZE - 1]) |
| 4097 | emacs_abort (); |
| 4098 | unblock_tty_out_signal (&oldset); |
| 4099 | |
| 4100 | if (status < 0) |
| 4101 | { |
| 4102 | #ifdef TERMINFO |
| 4103 | maybe_fatal (must_succeed, terminal, |
| 4104 | "Cannot open terminfo database file", |
| 4105 | "Cannot open terminfo database file"); |
| 4106 | #else |
| 4107 | maybe_fatal (must_succeed, terminal, |
| 4108 | "Cannot open termcap database file", |
| 4109 | "Cannot open termcap database file"); |
| 4110 | #endif |
| 4111 | } |
| 4112 | if (status == 0) |
| 4113 | { |
| 4114 | maybe_fatal (must_succeed, terminal, |
| 4115 | "Terminal type %s is not defined", |
| 4116 | "Terminal type %s is not defined.\n\ |
| 4117 | If that is not the actual type of terminal you have,\n\ |
| 4118 | use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ |
| 4119 | `setenv TERM ...') to specify the correct type. It may be necessary\n" |
| 4120 | #ifdef TERMINFO |
| 4121 | "to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.", |
| 4122 | #else |
| 4123 | "to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.", |
| 4124 | #endif |
| 4125 | terminal_type); |
| 4126 | } |
| 4127 | |
| 4128 | area = tty->termcap_strings_buffer; |
| 4129 | tty->TS_ins_line = tgetstr ("al", address); |
| 4130 | tty->TS_ins_multi_lines = tgetstr ("AL", address); |
| 4131 | tty->TS_bell = tgetstr ("bl", address); |
| 4132 | BackTab (tty) = tgetstr ("bt", address); |
| 4133 | tty->TS_clr_to_bottom = tgetstr ("cd", address); |
| 4134 | tty->TS_clr_line = tgetstr ("ce", address); |
| 4135 | tty->TS_clr_frame = tgetstr ("cl", address); |
| 4136 | ColPosition (tty) = NULL; /* tgetstr ("ch", address); */ |
| 4137 | AbsPosition (tty) = tgetstr ("cm", address); |
| 4138 | CR (tty) = tgetstr ("cr", address); |
| 4139 | tty->TS_set_scroll_region = tgetstr ("cs", address); |
| 4140 | tty->TS_set_scroll_region_1 = tgetstr ("cS", address); |
| 4141 | RowPosition (tty) = tgetstr ("cv", address); |
| 4142 | tty->TS_del_char = tgetstr ("dc", address); |
| 4143 | tty->TS_del_multi_chars = tgetstr ("DC", address); |
| 4144 | tty->TS_del_line = tgetstr ("dl", address); |
| 4145 | tty->TS_del_multi_lines = tgetstr ("DL", address); |
| 4146 | tty->TS_delete_mode = tgetstr ("dm", address); |
| 4147 | tty->TS_end_delete_mode = tgetstr ("ed", address); |
| 4148 | tty->TS_end_insert_mode = tgetstr ("ei", address); |
| 4149 | Home (tty) = tgetstr ("ho", address); |
| 4150 | tty->TS_ins_char = tgetstr ("ic", address); |
| 4151 | tty->TS_ins_multi_chars = tgetstr ("IC", address); |
| 4152 | tty->TS_insert_mode = tgetstr ("im", address); |
| 4153 | tty->TS_pad_inserted_char = tgetstr ("ip", address); |
| 4154 | tty->TS_end_keypad_mode = tgetstr ("ke", address); |
| 4155 | tty->TS_keypad_mode = tgetstr ("ks", address); |
| 4156 | LastLine (tty) = tgetstr ("ll", address); |
| 4157 | Right (tty) = tgetstr ("nd", address); |
| 4158 | Down (tty) = tgetstr ("do", address); |
| 4159 | if (!Down (tty)) |
| 4160 | Down (tty) = tgetstr ("nl", address); /* Obsolete name for "do". */ |
| 4161 | if (tgetflag ("bs")) |
| 4162 | Left (tty) = "\b"; /* Can't possibly be longer! */ |
| 4163 | else /* (Actually, "bs" is obsolete...) */ |
| 4164 | Left (tty) = tgetstr ("le", address); |
| 4165 | if (!Left (tty)) |
| 4166 | Left (tty) = tgetstr ("bc", address); /* Obsolete name for "le". */ |
| 4167 | tty->TS_pad_char = tgetstr ("pc", address); |
| 4168 | tty->TS_repeat = tgetstr ("rp", address); |
| 4169 | tty->TS_end_standout_mode = tgetstr ("se", address); |
| 4170 | tty->TS_fwd_scroll = tgetstr ("sf", address); |
| 4171 | tty->TS_standout_mode = tgetstr ("so", address); |
| 4172 | tty->TS_rev_scroll = tgetstr ("sr", address); |
| 4173 | tty->Wcm->cm_tab = tgetstr ("ta", address); |
| 4174 | tty->TS_end_termcap_modes = tgetstr ("te", address); |
| 4175 | tty->TS_termcap_modes = tgetstr ("ti", address); |
| 4176 | Up (tty) = tgetstr ("up", address); |
| 4177 | tty->TS_visible_bell = tgetstr ("vb", address); |
| 4178 | tty->TS_cursor_normal = tgetstr ("ve", address); |
| 4179 | tty->TS_cursor_visible = tgetstr ("vs", address); |
| 4180 | tty->TS_cursor_invisible = tgetstr ("vi", address); |
| 4181 | tty->TS_set_window = tgetstr ("wi", address); |
| 4182 | |
| 4183 | tty->TS_enter_underline_mode = tgetstr ("us", address); |
| 4184 | tty->TS_exit_underline_mode = tgetstr ("ue", address); |
| 4185 | tty->TS_enter_bold_mode = tgetstr ("md", address); |
| 4186 | tty->TS_enter_italic_mode = tgetstr ("ZH", address); |
| 4187 | tty->TS_enter_dim_mode = tgetstr ("mh", address); |
| 4188 | tty->TS_enter_reverse_mode = tgetstr ("mr", address); |
| 4189 | tty->TS_enter_alt_charset_mode = tgetstr ("as", address); |
| 4190 | tty->TS_exit_alt_charset_mode = tgetstr ("ae", address); |
| 4191 | tty->TS_exit_attribute_mode = tgetstr ("me", address); |
| 4192 | |
| 4193 | MultiUp (tty) = tgetstr ("UP", address); |
| 4194 | MultiDown (tty) = tgetstr ("DO", address); |
| 4195 | MultiLeft (tty) = tgetstr ("LE", address); |
| 4196 | MultiRight (tty) = tgetstr ("RI", address); |
| 4197 | |
| 4198 | /* SVr4/ANSI color support. If "op" isn't available, don't support |
| 4199 | color because we can't switch back to the default foreground and |
| 4200 | background. */ |
| 4201 | tty->TS_orig_pair = tgetstr ("op", address); |
| 4202 | if (tty->TS_orig_pair) |
| 4203 | { |
| 4204 | tty->TS_set_foreground = tgetstr ("AF", address); |
| 4205 | tty->TS_set_background = tgetstr ("AB", address); |
| 4206 | if (!tty->TS_set_foreground) |
| 4207 | { |
| 4208 | /* SVr4. */ |
| 4209 | tty->TS_set_foreground = tgetstr ("Sf", address); |
| 4210 | tty->TS_set_background = tgetstr ("Sb", address); |
| 4211 | } |
| 4212 | |
| 4213 | tty->TN_max_colors = tgetnum ("Co"); |
| 4214 | tty->TN_max_pairs = tgetnum ("pa"); |
| 4215 | |
| 4216 | tty->TN_no_color_video = tgetnum ("NC"); |
| 4217 | if (tty->TN_no_color_video == -1) |
| 4218 | tty->TN_no_color_video = 0; |
| 4219 | } |
| 4220 | |
| 4221 | tty_default_color_capabilities (tty, 1); |
| 4222 | |
| 4223 | MagicWrap (tty) = tgetflag ("xn"); |
| 4224 | /* Since we make MagicWrap terminals look like AutoWrap, we need to have |
| 4225 | the former flag imply the latter. */ |
| 4226 | AutoWrap (tty) = MagicWrap (tty) || tgetflag ("am"); |
| 4227 | tty->memory_below_frame = tgetflag ("db"); |
| 4228 | tty->TF_hazeltine = tgetflag ("hz"); |
| 4229 | tty->must_write_spaces = tgetflag ("in"); |
| 4230 | tty->meta_key = tgetflag ("km") || tgetflag ("MT"); |
| 4231 | tty->TF_insmode_motion = tgetflag ("mi"); |
| 4232 | tty->TF_standout_motion = tgetflag ("ms"); |
| 4233 | tty->TF_underscore = tgetflag ("ul"); |
| 4234 | tty->TF_teleray = tgetflag ("xt"); |
| 4235 | |
| 4236 | #else /* DOS_NT */ |
| 4237 | #ifdef WINDOWSNT |
| 4238 | { |
| 4239 | struct frame *f = XFRAME (selected_frame); |
| 4240 | int height, width; |
| 4241 | |
| 4242 | initialize_w32_display (terminal, &width, &height); |
| 4243 | |
| 4244 | FrameRows (tty) = height; |
| 4245 | FrameCols (tty) = width; |
| 4246 | tty->specified_window = height; |
| 4247 | |
| 4248 | FRAME_VERTICAL_SCROLL_BAR_TYPE (f) = vertical_scroll_bar_none; |
| 4249 | tty->char_ins_del_ok = 1; |
| 4250 | baud_rate = 19200; |
| 4251 | } |
| 4252 | #else /* MSDOS */ |
| 4253 | { |
| 4254 | int height, width; |
| 4255 | if (strcmp (terminal_type, "internal") == 0) |
| 4256 | terminal->type = output_msdos_raw; |
| 4257 | initialize_msdos_display (terminal); |
| 4258 | |
| 4259 | get_tty_size (fileno (tty->input), &width, &height); |
| 4260 | FrameCols (tty) = width; |
| 4261 | FrameRows (tty) = height; |
| 4262 | tty->char_ins_del_ok = 0; |
| 4263 | init_baud_rate (fileno (tty->input)); |
| 4264 | } |
| 4265 | #endif /* MSDOS */ |
| 4266 | tty->output = stdout; |
| 4267 | tty->input = stdin; |
| 4268 | /* The following two are inaccessible from w32console.c. */ |
| 4269 | terminal->delete_frame_hook = &tty_free_frame_resources; |
| 4270 | terminal->delete_terminal_hook = &delete_tty; |
| 4271 | |
| 4272 | tty->name = xstrdup (name); |
| 4273 | terminal->name = xstrdup (name); |
| 4274 | tty->type = xstrdup (terminal_type); |
| 4275 | |
| 4276 | add_keyboard_wait_descriptor (0); |
| 4277 | |
| 4278 | tty->delete_in_insert_mode = 1; |
| 4279 | |
| 4280 | UseTabs (tty) = 0; |
| 4281 | tty->scroll_region_ok = 0; |
| 4282 | |
| 4283 | /* Seems to insert lines when it's not supposed to, messing up the |
| 4284 | display. In doing a trace, it didn't seem to be called much, so I |
| 4285 | don't think we're losing anything by turning it off. */ |
| 4286 | tty->line_ins_del_ok = 0; |
| 4287 | |
| 4288 | tty->TN_max_colors = 16; /* Must be non-zero for tty-display-color-p. */ |
| 4289 | #endif /* DOS_NT */ |
| 4290 | |
| 4291 | #ifdef HAVE_GPM |
| 4292 | terminal->mouse_position_hook = term_mouse_position; |
| 4293 | tty->mouse_highlight.mouse_face_window = Qnil; |
| 4294 | #endif |
| 4295 | |
| 4296 | terminal->kboard = allocate_kboard (Qnil); |
| 4297 | terminal->kboard->reference_count++; |
| 4298 | /* Don't let the initial kboard remain current longer than necessary. |
| 4299 | That would cause problems if a file loaded on startup tries to |
| 4300 | prompt in the mini-buffer. */ |
| 4301 | if (current_kboard == initial_kboard) |
| 4302 | current_kboard = terminal->kboard; |
| 4303 | #ifndef DOS_NT |
| 4304 | term_get_fkeys (address, terminal->kboard); |
| 4305 | |
| 4306 | /* Get frame size from system, or else from termcap. */ |
| 4307 | { |
| 4308 | int height, width; |
| 4309 | get_tty_size (fileno (tty->input), &width, &height); |
| 4310 | FrameCols (tty) = width; |
| 4311 | FrameRows (tty) = height; |
| 4312 | } |
| 4313 | |
| 4314 | if (FrameCols (tty) <= 0) |
| 4315 | FrameCols (tty) = tgetnum ("co"); |
| 4316 | if (FrameRows (tty) <= 0) |
| 4317 | FrameRows (tty) = tgetnum ("li"); |
| 4318 | |
| 4319 | if (FrameRows (tty) < 3 || FrameCols (tty) < 3) |
| 4320 | maybe_fatal (must_succeed, terminal, |
| 4321 | "Screen size %dx%d is too small", |
| 4322 | "Screen size %dx%d is too small", |
| 4323 | FrameCols (tty), FrameRows (tty)); |
| 4324 | |
| 4325 | TabWidth (tty) = tgetnum ("tw"); |
| 4326 | |
| 4327 | if (!tty->TS_bell) |
| 4328 | tty->TS_bell = "\07"; |
| 4329 | |
| 4330 | if (!tty->TS_fwd_scroll) |
| 4331 | tty->TS_fwd_scroll = Down (tty); |
| 4332 | |
| 4333 | PC = tty->TS_pad_char ? *tty->TS_pad_char : 0; |
| 4334 | |
| 4335 | if (TabWidth (tty) < 0) |
| 4336 | TabWidth (tty) = 8; |
| 4337 | |
| 4338 | /* Turned off since /etc/termcap seems to have :ta= for most terminals |
| 4339 | and newer termcap doc does not seem to say there is a default. |
| 4340 | if (!tty->Wcm->cm_tab) |
| 4341 | tty->Wcm->cm_tab = "\t"; |
| 4342 | */ |
| 4343 | |
| 4344 | /* We don't support standout modes that use `magic cookies', so |
| 4345 | turn off any that do. */ |
| 4346 | if (tty->TS_standout_mode && tgetnum ("sg") >= 0) |
| 4347 | { |
| 4348 | tty->TS_standout_mode = 0; |
| 4349 | tty->TS_end_standout_mode = 0; |
| 4350 | } |
| 4351 | if (tty->TS_enter_underline_mode && tgetnum ("ug") >= 0) |
| 4352 | { |
| 4353 | tty->TS_enter_underline_mode = 0; |
| 4354 | tty->TS_exit_underline_mode = 0; |
| 4355 | } |
| 4356 | |
| 4357 | /* If there's no standout mode, try to use underlining instead. */ |
| 4358 | if (tty->TS_standout_mode == 0) |
| 4359 | { |
| 4360 | tty->TS_standout_mode = tty->TS_enter_underline_mode; |
| 4361 | tty->TS_end_standout_mode = tty->TS_exit_underline_mode; |
| 4362 | } |
| 4363 | |
| 4364 | /* If no `se' string, try using a `me' string instead. |
| 4365 | If that fails, we can't use standout mode at all. */ |
| 4366 | if (tty->TS_end_standout_mode == 0) |
| 4367 | { |
| 4368 | char *s = tgetstr ("me", address); |
| 4369 | if (s != 0) |
| 4370 | tty->TS_end_standout_mode = s; |
| 4371 | else |
| 4372 | tty->TS_standout_mode = 0; |
| 4373 | } |
| 4374 | |
| 4375 | if (tty->TF_teleray) |
| 4376 | { |
| 4377 | tty->Wcm->cm_tab = 0; |
| 4378 | /* We can't support standout mode, because it uses magic cookies. */ |
| 4379 | tty->TS_standout_mode = 0; |
| 4380 | /* But that means we cannot rely on ^M to go to column zero! */ |
| 4381 | CR (tty) = 0; |
| 4382 | /* LF can't be trusted either -- can alter hpos. */ |
| 4383 | /* If move at column 0 thru a line with TS_standout_mode. */ |
| 4384 | Down (tty) = 0; |
| 4385 | } |
| 4386 | |
| 4387 | tty->specified_window = FrameRows (tty); |
| 4388 | |
| 4389 | if (Wcm_init (tty) == -1) /* Can't do cursor motion. */ |
| 4390 | { |
| 4391 | maybe_fatal (must_succeed, terminal, |
| 4392 | "Terminal type \"%s\" is not powerful enough to run Emacs", |
| 4393 | "Terminal type \"%s\" is not powerful enough to run Emacs.\n\ |
| 4394 | It lacks the ability to position the cursor.\n\ |
| 4395 | If that is not the actual type of terminal you have,\n\ |
| 4396 | use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ |
| 4397 | `setenv TERM ...') to specify the correct type. It may be necessary\n" |
| 4398 | # ifdef TERMINFO |
| 4399 | "to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.", |
| 4400 | # else /* TERMCAP */ |
| 4401 | "to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.", |
| 4402 | # endif /* TERMINFO */ |
| 4403 | terminal_type); |
| 4404 | } |
| 4405 | |
| 4406 | if (FrameRows (tty) <= 0 || FrameCols (tty) <= 0) |
| 4407 | maybe_fatal (must_succeed, terminal, |
| 4408 | "Could not determine the frame size", |
| 4409 | "Could not determine the frame size"); |
| 4410 | |
| 4411 | tty->delete_in_insert_mode |
| 4412 | = tty->TS_delete_mode && tty->TS_insert_mode |
| 4413 | && !strcmp (tty->TS_delete_mode, tty->TS_insert_mode); |
| 4414 | |
| 4415 | UseTabs (tty) = tabs_safe_p (fileno (tty->input)) && TabWidth (tty) == 8; |
| 4416 | |
| 4417 | tty->scroll_region_ok |
| 4418 | = (tty->Wcm->cm_abs |
| 4419 | && (tty->TS_set_window || tty->TS_set_scroll_region || tty->TS_set_scroll_region_1)); |
| 4420 | |
| 4421 | tty->line_ins_del_ok |
| 4422 | = (((tty->TS_ins_line || tty->TS_ins_multi_lines) |
| 4423 | && (tty->TS_del_line || tty->TS_del_multi_lines)) |
| 4424 | || (tty->scroll_region_ok |
| 4425 | && tty->TS_fwd_scroll && tty->TS_rev_scroll)); |
| 4426 | |
| 4427 | tty->char_ins_del_ok |
| 4428 | = ((tty->TS_ins_char || tty->TS_insert_mode |
| 4429 | || tty->TS_pad_inserted_char || tty->TS_ins_multi_chars) |
| 4430 | && (tty->TS_del_char || tty->TS_del_multi_chars)); |
| 4431 | |
| 4432 | init_baud_rate (fileno (tty->input)); |
| 4433 | |
| 4434 | #endif /* not DOS_NT */ |
| 4435 | |
| 4436 | /* Init system terminal modes (RAW or CBREAK, etc.). */ |
| 4437 | init_sys_modes (tty); |
| 4438 | |
| 4439 | return terminal; |
| 4440 | } |
| 4441 | |
| 4442 | |
| 4443 | static void |
| 4444 | vfatal (const char *str, va_list ap) |
| 4445 | { |
| 4446 | fprintf (stderr, "emacs: "); |
| 4447 | vfprintf (stderr, str, ap); |
| 4448 | if (!(strlen (str) > 0 && str[strlen (str) - 1] == '\n')) |
| 4449 | fprintf (stderr, "\n"); |
| 4450 | fflush (stderr); |
| 4451 | exit (1); |
| 4452 | } |
| 4453 | |
| 4454 | |
| 4455 | /* Auxiliary error-handling function for init_tty. |
| 4456 | Delete TERMINAL, then call error or fatal with str1 or str2, |
| 4457 | respectively, according to whether MUST_SUCCEED is true. */ |
| 4458 | |
| 4459 | static void |
| 4460 | maybe_fatal (bool must_succeed, struct terminal *terminal, |
| 4461 | const char *str1, const char *str2, ...) |
| 4462 | { |
| 4463 | va_list ap; |
| 4464 | va_start (ap, str2); |
| 4465 | if (terminal) |
| 4466 | delete_tty (terminal); |
| 4467 | |
| 4468 | if (must_succeed) |
| 4469 | vfatal (str2, ap); |
| 4470 | else |
| 4471 | verror (str1, ap); |
| 4472 | } |
| 4473 | |
| 4474 | void |
| 4475 | fatal (const char *str, ...) |
| 4476 | { |
| 4477 | va_list ap; |
| 4478 | va_start (ap, str); |
| 4479 | vfatal (str, ap); |
| 4480 | } |
| 4481 | |
| 4482 | \f |
| 4483 | |
| 4484 | /* Delete the given tty terminal, closing all frames on it. */ |
| 4485 | |
| 4486 | static void |
| 4487 | delete_tty (struct terminal *terminal) |
| 4488 | { |
| 4489 | struct tty_display_info *tty; |
| 4490 | |
| 4491 | /* Protect against recursive calls. delete_frame in |
| 4492 | delete_terminal calls us back when it deletes our last frame. */ |
| 4493 | if (!terminal->name) |
| 4494 | return; |
| 4495 | |
| 4496 | eassert (terminal->type == output_termcap); |
| 4497 | |
| 4498 | tty = terminal->display_info.tty; |
| 4499 | |
| 4500 | if (tty == tty_list) |
| 4501 | tty_list = tty->next; |
| 4502 | else |
| 4503 | { |
| 4504 | struct tty_display_info *p; |
| 4505 | for (p = tty_list; p && p->next != tty; p = p->next) |
| 4506 | ; |
| 4507 | |
| 4508 | if (! p) |
| 4509 | /* This should not happen. */ |
| 4510 | emacs_abort (); |
| 4511 | |
| 4512 | p->next = tty->next; |
| 4513 | tty->next = 0; |
| 4514 | } |
| 4515 | |
| 4516 | /* reset_sys_modes needs a valid device, so this call needs to be |
| 4517 | before delete_terminal. */ |
| 4518 | reset_sys_modes (tty); |
| 4519 | |
| 4520 | delete_terminal (terminal); |
| 4521 | |
| 4522 | xfree (tty->name); |
| 4523 | xfree (tty->type); |
| 4524 | |
| 4525 | if (tty->input) |
| 4526 | { |
| 4527 | delete_keyboard_wait_descriptor (fileno (tty->input)); |
| 4528 | if (tty->input != stdin) |
| 4529 | fclose (tty->input); |
| 4530 | } |
| 4531 | if (tty->output && tty->output != stdout && tty->output != tty->input) |
| 4532 | fclose (tty->output); |
| 4533 | if (tty->termscript) |
| 4534 | fclose (tty->termscript); |
| 4535 | |
| 4536 | xfree (tty->old_tty); |
| 4537 | xfree (tty->Wcm); |
| 4538 | xfree (tty); |
| 4539 | } |
| 4540 | |
| 4541 | void |
| 4542 | syms_of_term (void) |
| 4543 | { |
| 4544 | #include "term.x" |
| 4545 | |
| 4546 | DEFVAR_BOOL ("system-uses-terminfo", system_uses_terminfo, |
| 4547 | doc: /* Non-nil means the system uses terminfo rather than termcap. |
| 4548 | This variable can be used by terminal emulator packages. */); |
| 4549 | #ifdef TERMINFO |
| 4550 | system_uses_terminfo = 1; |
| 4551 | #else |
| 4552 | system_uses_terminfo = 0; |
| 4553 | #endif |
| 4554 | |
| 4555 | DEFVAR_LISP ("suspend-tty-functions", Vsuspend_tty_functions, |
| 4556 | doc: /* Functions run after suspending a tty. |
| 4557 | The functions are run with one argument, the terminal object to be suspended. |
| 4558 | See `suspend-tty'. */); |
| 4559 | Vsuspend_tty_functions = Qnil; |
| 4560 | |
| 4561 | |
| 4562 | DEFVAR_LISP ("resume-tty-functions", Vresume_tty_functions, |
| 4563 | doc: /* Functions run after resuming a tty. |
| 4564 | The functions are run with one argument, the terminal object that was revived. |
| 4565 | See `resume-tty'. */); |
| 4566 | Vresume_tty_functions = Qnil; |
| 4567 | |
| 4568 | DEFVAR_BOOL ("visible-cursor", visible_cursor, |
| 4569 | doc: /* Non-nil means to make the cursor very visible. |
| 4570 | This only has an effect when running in a text terminal. |
| 4571 | What means \"very visible\" is up to your terminal. It may make the cursor |
| 4572 | bigger, or it may make it blink, or it may do nothing at all. */); |
| 4573 | visible_cursor = 1; |
| 4574 | |
| 4575 | #ifndef DOS_NT |
| 4576 | default_orig_pair = NULL; |
| 4577 | default_set_foreground = NULL; |
| 4578 | default_set_background = NULL; |
| 4579 | #endif /* !DOS_NT */ |
| 4580 | |
| 4581 | encode_terminal_src = NULL; |
| 4582 | encode_terminal_dst = NULL; |
| 4583 | |
| 4584 | DEFSYM (Qtty_mode_set_strings, "tty-mode-set-strings"); |
| 4585 | DEFSYM (Qtty_mode_reset_strings, "tty-mode-reset-strings"); |
| 4586 | |
| 4587 | #ifndef MSDOS |
| 4588 | DEFSYM (Qtty_menu_next_item, "tty-menu-next-item"); |
| 4589 | DEFSYM (Qtty_menu_prev_item, "tty-menu-prev-item"); |
| 4590 | DEFSYM (Qtty_menu_next_menu, "tty-menu-next-menu"); |
| 4591 | DEFSYM (Qtty_menu_prev_menu, "tty-menu-prev-menu"); |
| 4592 | DEFSYM (Qtty_menu_select, "tty-menu-select"); |
| 4593 | DEFSYM (Qtty_menu_ignore, "tty-menu-ignore"); |
| 4594 | DEFSYM (Qtty_menu_exit, "tty-menu-exit"); |
| 4595 | DEFSYM (Qtty_menu_mouse_movement, "tty-menu-mouse-movement"); |
| 4596 | DEFSYM (Qtty_menu_navigation_map, "tty-menu-navigation-map"); |
| 4597 | #endif |
| 4598 | } |