| 1 | /* X Communication module for terminals which understand the X protocol. |
| 2 | |
| 3 | Copyright (C) 1986, 1988, 1993-1994, 1996, 1999-2013 Free Software |
| 4 | Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | /* X pop-up deck-of-cards menu facility for GNU Emacs. |
| 22 | * |
| 23 | * Written by Jon Arnold and Roman Budzianowski |
| 24 | * Mods and rewrite by Robert Krawitz |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | /* Modified by Fred Pierresteguy on December 93 |
| 29 | to make the popup menus and menubar use the Xt. */ |
| 30 | |
| 31 | /* Rewritten for clarity and GC protection by rms in Feb 94. */ |
| 32 | |
| 33 | #include <config.h> |
| 34 | |
| 35 | #include <stdio.h> |
| 36 | |
| 37 | #include "lisp.h" |
| 38 | #include "keyboard.h" |
| 39 | #include "keymap.h" |
| 40 | #include "frame.h" |
| 41 | #include "termhooks.h" |
| 42 | #include "window.h" |
| 43 | #include "blockinput.h" |
| 44 | #include "character.h" |
| 45 | #include "buffer.h" |
| 46 | #include "charset.h" |
| 47 | #include "coding.h" |
| 48 | #include "sysselect.h" |
| 49 | |
| 50 | #ifdef MSDOS |
| 51 | #include "msdos.h" |
| 52 | #endif |
| 53 | |
| 54 | #ifdef HAVE_X_WINDOWS |
| 55 | /* This may include sys/types.h, and that somehow loses |
| 56 | if this is not done before the other system files. */ |
| 57 | #include "xterm.h" |
| 58 | #endif |
| 59 | |
| 60 | /* Load sys/types.h if not already loaded. |
| 61 | In some systems loading it twice is suicidal. */ |
| 62 | #ifndef makedev |
| 63 | #include <sys/types.h> |
| 64 | #endif |
| 65 | |
| 66 | #include "dispextern.h" |
| 67 | |
| 68 | #ifdef HAVE_X_WINDOWS |
| 69 | /* Defining HAVE_MULTILINGUAL_MENU would mean that the toolkit menu |
| 70 | code accepts the Emacs internal encoding. */ |
| 71 | #undef HAVE_MULTILINGUAL_MENU |
| 72 | #ifdef USE_X_TOOLKIT |
| 73 | #include "widget.h" |
| 74 | #include <X11/Xlib.h> |
| 75 | #include <X11/IntrinsicP.h> |
| 76 | #include <X11/CoreP.h> |
| 77 | #include <X11/StringDefs.h> |
| 78 | #include <X11/Shell.h> |
| 79 | #ifdef USE_LUCID |
| 80 | #include "xsettings.h" |
| 81 | #include "../lwlib/xlwmenu.h" |
| 82 | #ifdef HAVE_XAW3D |
| 83 | #include <X11/Xaw3d/Paned.h> |
| 84 | #else /* !HAVE_XAW3D */ |
| 85 | #include <X11/Xaw/Paned.h> |
| 86 | #endif /* HAVE_XAW3D */ |
| 87 | #endif /* USE_LUCID */ |
| 88 | #ifdef USE_MOTIF |
| 89 | #include "../lwlib/lwlib.h" |
| 90 | #endif |
| 91 | #else /* not USE_X_TOOLKIT */ |
| 92 | #ifndef USE_GTK |
| 93 | #include "../oldXMenu/XMenu.h" |
| 94 | #endif |
| 95 | #endif /* not USE_X_TOOLKIT */ |
| 96 | #endif /* HAVE_X_WINDOWS */ |
| 97 | |
| 98 | #ifdef USE_GTK |
| 99 | #include "gtkutil.h" |
| 100 | #ifdef HAVE_GTK3 |
| 101 | #include "xgselect.h" |
| 102 | #endif |
| 103 | #endif |
| 104 | |
| 105 | #include "menu.h" |
| 106 | |
| 107 | #ifndef TRUE |
| 108 | #define TRUE 1 |
| 109 | #endif /* no TRUE */ |
| 110 | |
| 111 | static Lisp_Object Qdebug_on_next_call; |
| 112 | |
| 113 | #if defined (USE_X_TOOLKIT) || defined (USE_GTK) |
| 114 | static Lisp_Object xdialog_show (struct frame *, bool, Lisp_Object, Lisp_Object, |
| 115 | const char **); |
| 116 | #endif |
| 117 | \f |
| 118 | /* Flag which when set indicates a dialog or menu has been posted by |
| 119 | Xt on behalf of one of the widget sets. */ |
| 120 | static int popup_activated_flag; |
| 121 | |
| 122 | \f |
| 123 | #ifdef USE_X_TOOLKIT |
| 124 | |
| 125 | static int next_menubar_widget_id; |
| 126 | |
| 127 | /* Return the frame whose ->output_data.x->id equals ID, or 0 if none. */ |
| 128 | |
| 129 | static struct frame * |
| 130 | menubar_id_to_frame (LWLIB_ID id) |
| 131 | { |
| 132 | Lisp_Object tail, frame; |
| 133 | struct frame *f; |
| 134 | |
| 135 | FOR_EACH_FRAME (tail, frame) |
| 136 | { |
| 137 | f = XFRAME (frame); |
| 138 | if (!FRAME_WINDOW_P (f)) |
| 139 | continue; |
| 140 | if (f->output_data.x->id == id) |
| 141 | return f; |
| 142 | } |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | #endif |
| 147 | \f |
| 148 | #ifdef HAVE_X_WINDOWS |
| 149 | /* Return the mouse position in *X and *Y. The coordinates are window |
| 150 | relative for the edit window in frame F. |
| 151 | This is for Fx_popup_menu. The mouse_position_hook can not |
| 152 | be used for X, as it returns window relative coordinates |
| 153 | for the window where the mouse is in. This could be the menu bar, |
| 154 | the scroll bar or the edit window. Fx_popup_menu needs to be |
| 155 | sure it is the edit window. */ |
| 156 | void |
| 157 | mouse_position_for_popup (struct frame *f, int *x, int *y) |
| 158 | { |
| 159 | Window root, dummy_window; |
| 160 | int dummy; |
| 161 | |
| 162 | eassert (FRAME_X_P (f)); |
| 163 | |
| 164 | block_input (); |
| 165 | |
| 166 | XQueryPointer (FRAME_X_DISPLAY (f), |
| 167 | DefaultRootWindow (FRAME_X_DISPLAY (f)), |
| 168 | |
| 169 | /* The root window which contains the pointer. */ |
| 170 | &root, |
| 171 | |
| 172 | /* Window pointer is on, not used */ |
| 173 | &dummy_window, |
| 174 | |
| 175 | /* The position on that root window. */ |
| 176 | x, y, |
| 177 | |
| 178 | /* x/y in dummy_window coordinates, not used. */ |
| 179 | &dummy, &dummy, |
| 180 | |
| 181 | /* Modifier keys and pointer buttons, about which |
| 182 | we don't care. */ |
| 183 | (unsigned int *) &dummy); |
| 184 | |
| 185 | unblock_input (); |
| 186 | |
| 187 | /* xmenu_show expects window coordinates, not root window |
| 188 | coordinates. Translate. */ |
| 189 | *x -= f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); |
| 190 | *y -= f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); |
| 191 | } |
| 192 | |
| 193 | #endif /* HAVE_X_WINDOWS */ |
| 194 | |
| 195 | #ifdef HAVE_MENUS |
| 196 | |
| 197 | DEFUN ("x-popup-dialog", Fx_popup_dialog, Sx_popup_dialog, 2, 3, 0, |
| 198 | doc: /* Pop up a dialog box and return user's selection. |
| 199 | POSITION specifies which frame to use. |
| 200 | This is normally a mouse button event or a window or frame. |
| 201 | If POSITION is t, it means to use the frame the mouse is on. |
| 202 | The dialog box appears in the middle of the specified frame. |
| 203 | |
| 204 | CONTENTS specifies the alternatives to display in the dialog box. |
| 205 | It is a list of the form (DIALOG ITEM1 ITEM2...). |
| 206 | Each ITEM is a cons cell (STRING . VALUE). |
| 207 | The return value is VALUE from the chosen item. |
| 208 | |
| 209 | An ITEM may also be just a string--that makes a nonselectable item. |
| 210 | An ITEM may also be nil--that means to put all preceding items |
| 211 | on the left of the dialog box and all following items on the right. |
| 212 | \(By default, approximately half appear on each side.) |
| 213 | |
| 214 | If HEADER is non-nil, the frame title for the box is "Information", |
| 215 | otherwise it is "Question". |
| 216 | |
| 217 | If the user gets rid of the dialog box without making a valid choice, |
| 218 | for instance using the window manager, then this produces a quit and |
| 219 | `x-popup-dialog' does not return. */) |
| 220 | (Lisp_Object position, Lisp_Object contents, Lisp_Object header) |
| 221 | { |
| 222 | struct frame *f = NULL; |
| 223 | Lisp_Object window; |
| 224 | |
| 225 | /* Decode the first argument: find the window or frame to use. */ |
| 226 | if (EQ (position, Qt) |
| 227 | || (CONSP (position) && (EQ (XCAR (position), Qmenu_bar) |
| 228 | || EQ (XCAR (position), Qtool_bar)))) |
| 229 | { |
| 230 | #if 0 /* Using the frame the mouse is on may not be right. */ |
| 231 | /* Use the mouse's current position. */ |
| 232 | struct frame *new_f = SELECTED_FRAME (); |
| 233 | Lisp_Object bar_window; |
| 234 | enum scroll_bar_part part; |
| 235 | Time time; |
| 236 | Lisp_Object x, y; |
| 237 | |
| 238 | (*mouse_position_hook) (&new_f, 1, &bar_window, &part, &x, &y, &time); |
| 239 | |
| 240 | if (new_f != 0) |
| 241 | XSETFRAME (window, new_f); |
| 242 | else |
| 243 | window = selected_window; |
| 244 | #endif |
| 245 | window = selected_window; |
| 246 | } |
| 247 | else if (CONSP (position)) |
| 248 | { |
| 249 | Lisp_Object tem = XCAR (position); |
| 250 | if (CONSP (tem)) |
| 251 | window = Fcar (XCDR (position)); |
| 252 | else |
| 253 | { |
| 254 | tem = Fcar (XCDR (position)); /* EVENT_START (position) */ |
| 255 | window = Fcar (tem); /* POSN_WINDOW (tem) */ |
| 256 | } |
| 257 | } |
| 258 | else if (WINDOWP (position) || FRAMEP (position)) |
| 259 | window = position; |
| 260 | else |
| 261 | window = Qnil; |
| 262 | |
| 263 | /* Decode where to put the menu. */ |
| 264 | |
| 265 | if (FRAMEP (window)) |
| 266 | f = XFRAME (window); |
| 267 | else if (WINDOWP (window)) |
| 268 | { |
| 269 | CHECK_LIVE_WINDOW (window); |
| 270 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
| 271 | } |
| 272 | else |
| 273 | /* ??? Not really clean; should be CHECK_WINDOW_OR_FRAME, |
| 274 | but I don't want to make one now. */ |
| 275 | CHECK_WINDOW (window); |
| 276 | |
| 277 | check_window_system (f); |
| 278 | |
| 279 | /* Force a redisplay before showing the dialog. If a frame is created |
| 280 | just before showing the dialog, its contents may not have been fully |
| 281 | drawn, as this depends on timing of events from the X server. Redisplay |
| 282 | is not done when a dialog is shown. If redisplay could be done in the |
| 283 | X event loop (i.e. the X event loop does not run in a signal handler) |
| 284 | this would not be needed. |
| 285 | |
| 286 | Do this before creating the widget value that points to Lisp |
| 287 | string contents, because Fredisplay may GC and relocate them. */ |
| 288 | Fredisplay (Qt); |
| 289 | |
| 290 | #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK) |
| 291 | /* Display a menu with these alternatives |
| 292 | in the middle of frame F. */ |
| 293 | { |
| 294 | Lisp_Object x, y, frame, newpos; |
| 295 | XSETFRAME (frame, f); |
| 296 | XSETINT (x, FRAME_PIXEL_WIDTH (f) / 2); |
| 297 | XSETINT (y, FRAME_PIXEL_HEIGHT (f) / 2); |
| 298 | newpos = list2 (list2 (x, y), frame); |
| 299 | |
| 300 | return Fx_popup_menu (newpos, |
| 301 | list2 (Fcar (contents), contents)); |
| 302 | } |
| 303 | #else |
| 304 | { |
| 305 | Lisp_Object title; |
| 306 | const char *error_name; |
| 307 | Lisp_Object selection; |
| 308 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 309 | |
| 310 | /* Decode the dialog items from what was specified. */ |
| 311 | title = Fcar (contents); |
| 312 | CHECK_STRING (title); |
| 313 | record_unwind_protect_void (unuse_menu_items); |
| 314 | |
| 315 | if (NILP (Fcar (Fcdr (contents)))) |
| 316 | /* No buttons specified, add an "Ok" button so users can pop down |
| 317 | the dialog. Also, the lesstif/motif version crashes if there are |
| 318 | no buttons. */ |
| 319 | contents = list2 (title, Fcons (build_string ("Ok"), Qt)); |
| 320 | |
| 321 | list_of_panes (list1 (contents)); |
| 322 | |
| 323 | /* Display them in a dialog box. */ |
| 324 | block_input (); |
| 325 | selection = xdialog_show (f, 0, title, header, &error_name); |
| 326 | unblock_input (); |
| 327 | |
| 328 | unbind_to (specpdl_count, Qnil); |
| 329 | discard_menu_items (); |
| 330 | |
| 331 | if (error_name) error ("%s", error_name); |
| 332 | return selection; |
| 333 | } |
| 334 | #endif |
| 335 | } |
| 336 | |
| 337 | |
| 338 | #ifndef MSDOS |
| 339 | |
| 340 | #if defined USE_GTK || defined USE_MOTIF |
| 341 | |
| 342 | /* Set menu_items_inuse so no other popup menu or dialog is created. */ |
| 343 | |
| 344 | void |
| 345 | x_menu_set_in_use (int in_use) |
| 346 | { |
| 347 | menu_items_inuse = in_use ? Qt : Qnil; |
| 348 | popup_activated_flag = in_use; |
| 349 | #ifdef USE_X_TOOLKIT |
| 350 | if (popup_activated_flag) |
| 351 | x_activate_timeout_atimer (); |
| 352 | #endif |
| 353 | } |
| 354 | |
| 355 | #endif |
| 356 | |
| 357 | /* Wait for an X event to arrive or for a timer to expire. */ |
| 358 | |
| 359 | #ifndef USE_MOTIF |
| 360 | static |
| 361 | #endif |
| 362 | void |
| 363 | x_menu_wait_for_event (void *data) |
| 364 | { |
| 365 | /* Another way to do this is to register a timer callback, that can be |
| 366 | done in GTK and Xt. But we have to do it like this when using only X |
| 367 | anyway, and with callbacks we would have three variants for timer handling |
| 368 | instead of the small ifdefs below. */ |
| 369 | |
| 370 | while ( |
| 371 | #ifdef USE_X_TOOLKIT |
| 372 | ! XtAppPending (Xt_app_con) |
| 373 | #elif defined USE_GTK |
| 374 | ! gtk_events_pending () |
| 375 | #else |
| 376 | ! XPending ((Display*) data) |
| 377 | #endif |
| 378 | ) |
| 379 | { |
| 380 | EMACS_TIME next_time = timer_check (), *ntp; |
| 381 | SELECT_TYPE read_fds; |
| 382 | struct x_display_info *dpyinfo; |
| 383 | int n = 0; |
| 384 | |
| 385 | FD_ZERO (&read_fds); |
| 386 | for (dpyinfo = x_display_list; dpyinfo; dpyinfo = dpyinfo->next) |
| 387 | { |
| 388 | int fd = ConnectionNumber (dpyinfo->display); |
| 389 | FD_SET (fd, &read_fds); |
| 390 | if (fd > n) n = fd; |
| 391 | XFlush (dpyinfo->display); |
| 392 | } |
| 393 | |
| 394 | if (! EMACS_TIME_VALID_P (next_time)) |
| 395 | ntp = 0; |
| 396 | else |
| 397 | ntp = &next_time; |
| 398 | |
| 399 | #if defined USE_GTK && defined HAVE_GTK3 |
| 400 | /* Gtk3 have arrows on menus when they don't fit. When the |
| 401 | pointer is over an arrow, a timeout scrolls it a bit. Use |
| 402 | xg_select so that timeout gets triggered. */ |
| 403 | xg_select (n + 1, &read_fds, NULL, NULL, ntp, NULL); |
| 404 | #else |
| 405 | pselect (n + 1, &read_fds, NULL, NULL, ntp, NULL); |
| 406 | #endif |
| 407 | } |
| 408 | } |
| 409 | #endif /* ! MSDOS */ |
| 410 | |
| 411 | \f |
| 412 | #if defined (USE_X_TOOLKIT) || defined (USE_GTK) |
| 413 | |
| 414 | #ifdef USE_X_TOOLKIT |
| 415 | |
| 416 | /* Loop in Xt until the menu pulldown or dialog popup has been |
| 417 | popped down (deactivated). This is used for x-popup-menu |
| 418 | and x-popup-dialog; it is not used for the menu bar. |
| 419 | |
| 420 | NOTE: All calls to popup_get_selection should be protected |
| 421 | with BLOCK_INPUT, UNBLOCK_INPUT wrappers. */ |
| 422 | |
| 423 | static void |
| 424 | popup_get_selection (XEvent *initial_event, struct x_display_info *dpyinfo, LWLIB_ID id, int do_timers) |
| 425 | { |
| 426 | XEvent event; |
| 427 | |
| 428 | while (popup_activated_flag) |
| 429 | { |
| 430 | if (initial_event) |
| 431 | { |
| 432 | event = *initial_event; |
| 433 | initial_event = 0; |
| 434 | } |
| 435 | else |
| 436 | { |
| 437 | if (do_timers) x_menu_wait_for_event (0); |
| 438 | XtAppNextEvent (Xt_app_con, &event); |
| 439 | } |
| 440 | |
| 441 | /* Make sure we don't consider buttons grabbed after menu goes. |
| 442 | And make sure to deactivate for any ButtonRelease, |
| 443 | even if XtDispatchEvent doesn't do that. */ |
| 444 | if (event.type == ButtonRelease |
| 445 | && dpyinfo->display == event.xbutton.display) |
| 446 | { |
| 447 | dpyinfo->grabbed &= ~(1 << event.xbutton.button); |
| 448 | #ifdef USE_MOTIF /* Pretending that the event came from a |
| 449 | Btn1Down seems the only way to convince Motif to |
| 450 | activate its callbacks; setting the XmNmenuPost |
| 451 | isn't working. --marcus@sysc.pdx.edu. */ |
| 452 | event.xbutton.button = 1; |
| 453 | /* Motif only pops down menus when no Ctrl, Alt or Mod |
| 454 | key is pressed and the button is released. So reset key state |
| 455 | so Motif thinks this is the case. */ |
| 456 | event.xbutton.state = 0; |
| 457 | #endif |
| 458 | } |
| 459 | /* Pop down on C-g and Escape. */ |
| 460 | else if (event.type == KeyPress |
| 461 | && dpyinfo->display == event.xbutton.display) |
| 462 | { |
| 463 | KeySym keysym = XLookupKeysym (&event.xkey, 0); |
| 464 | |
| 465 | if ((keysym == XK_g && (event.xkey.state & ControlMask) != 0) |
| 466 | || keysym == XK_Escape) /* Any escape, ignore modifiers. */ |
| 467 | popup_activated_flag = 0; |
| 468 | } |
| 469 | |
| 470 | x_dispatch_event (&event, event.xany.display); |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | DEFUN ("x-menu-bar-open-internal", Fx_menu_bar_open_internal, Sx_menu_bar_open_internal, 0, 1, "i", |
| 475 | doc: /* Start key navigation of the menu bar in FRAME. |
| 476 | This initially opens the first menu bar item and you can then navigate with the |
| 477 | arrow keys, select a menu entry with the return key or cancel with the |
| 478 | escape key. If FRAME has no menu bar this function does nothing. |
| 479 | |
| 480 | If FRAME is nil or not given, use the selected frame. */) |
| 481 | (Lisp_Object frame) |
| 482 | { |
| 483 | XEvent ev; |
| 484 | struct frame *f = decode_window_system_frame (frame); |
| 485 | Widget menubar; |
| 486 | block_input (); |
| 487 | |
| 488 | if (FRAME_EXTERNAL_MENU_BAR (f)) |
| 489 | set_frame_menubar (f, 0, 1); |
| 490 | |
| 491 | menubar = FRAME_X_OUTPUT (f)->menubar_widget; |
| 492 | if (menubar) |
| 493 | { |
| 494 | Window child; |
| 495 | bool error_p = 0; |
| 496 | |
| 497 | x_catch_errors (FRAME_X_DISPLAY (f)); |
| 498 | memset (&ev, 0, sizeof ev); |
| 499 | ev.xbutton.display = FRAME_X_DISPLAY (f); |
| 500 | ev.xbutton.window = XtWindow (menubar); |
| 501 | ev.xbutton.root = FRAME_X_DISPLAY_INFO (f)->root_window; |
| 502 | ev.xbutton.time = XtLastTimestampProcessed (FRAME_X_DISPLAY (f)); |
| 503 | ev.xbutton.button = Button1; |
| 504 | ev.xbutton.x = ev.xbutton.y = FRAME_MENUBAR_HEIGHT (f) / 2; |
| 505 | ev.xbutton.same_screen = True; |
| 506 | |
| 507 | #ifdef USE_MOTIF |
| 508 | { |
| 509 | Arg al[2]; |
| 510 | WidgetList list; |
| 511 | Cardinal nr; |
| 512 | XtSetArg (al[0], XtNchildren, &list); |
| 513 | XtSetArg (al[1], XtNnumChildren, &nr); |
| 514 | XtGetValues (menubar, al, 2); |
| 515 | ev.xbutton.window = XtWindow (list[0]); |
| 516 | } |
| 517 | #endif |
| 518 | |
| 519 | XTranslateCoordinates (FRAME_X_DISPLAY (f), |
| 520 | /* From-window, to-window. */ |
| 521 | ev.xbutton.window, ev.xbutton.root, |
| 522 | |
| 523 | /* From-position, to-position. */ |
| 524 | ev.xbutton.x, ev.xbutton.y, |
| 525 | &ev.xbutton.x_root, &ev.xbutton.y_root, |
| 526 | |
| 527 | /* Child of win. */ |
| 528 | &child); |
| 529 | error_p = x_had_errors_p (FRAME_X_DISPLAY (f)); |
| 530 | x_uncatch_errors (); |
| 531 | |
| 532 | if (! error_p) |
| 533 | { |
| 534 | ev.type = ButtonPress; |
| 535 | ev.xbutton.state = 0; |
| 536 | |
| 537 | XtDispatchEvent (&ev); |
| 538 | ev.xbutton.type = ButtonRelease; |
| 539 | ev.xbutton.state = Button1Mask; |
| 540 | XtDispatchEvent (&ev); |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | unblock_input (); |
| 545 | |
| 546 | return Qnil; |
| 547 | } |
| 548 | #endif /* USE_X_TOOLKIT */ |
| 549 | |
| 550 | |
| 551 | #ifdef USE_GTK |
| 552 | DEFUN ("x-menu-bar-open-internal", Fx_menu_bar_open_internal, Sx_menu_bar_open_internal, 0, 1, "i", |
| 553 | doc: /* Start key navigation of the menu bar in FRAME. |
| 554 | This initially opens the first menu bar item and you can then navigate with the |
| 555 | arrow keys, select a menu entry with the return key or cancel with the |
| 556 | escape key. If FRAME has no menu bar this function does nothing. |
| 557 | |
| 558 | If FRAME is nil or not given, use the selected frame. */) |
| 559 | (Lisp_Object frame) |
| 560 | { |
| 561 | GtkWidget *menubar; |
| 562 | struct frame *f; |
| 563 | |
| 564 | block_input (); |
| 565 | f = decode_window_system_frame (frame); |
| 566 | |
| 567 | if (FRAME_EXTERNAL_MENU_BAR (f)) |
| 568 | set_frame_menubar (f, 0, 1); |
| 569 | |
| 570 | menubar = FRAME_X_OUTPUT (f)->menubar_widget; |
| 571 | if (menubar) |
| 572 | { |
| 573 | /* Activate the first menu. */ |
| 574 | GList *children = gtk_container_get_children (GTK_CONTAINER (menubar)); |
| 575 | |
| 576 | if (children) |
| 577 | { |
| 578 | g_signal_emit_by_name (children->data, "activate_item"); |
| 579 | popup_activated_flag = 1; |
| 580 | g_list_free (children); |
| 581 | } |
| 582 | } |
| 583 | unblock_input (); |
| 584 | |
| 585 | return Qnil; |
| 586 | } |
| 587 | |
| 588 | /* Loop util popup_activated_flag is set to zero in a callback. |
| 589 | Used for popup menus and dialogs. */ |
| 590 | |
| 591 | static void |
| 592 | popup_widget_loop (int do_timers, GtkWidget *widget) |
| 593 | { |
| 594 | ++popup_activated_flag; |
| 595 | |
| 596 | /* Process events in the Gtk event loop until done. */ |
| 597 | while (popup_activated_flag) |
| 598 | { |
| 599 | if (do_timers) x_menu_wait_for_event (0); |
| 600 | gtk_main_iteration (); |
| 601 | } |
| 602 | } |
| 603 | #endif |
| 604 | |
| 605 | /* Activate the menu bar of frame F. |
| 606 | This is called from keyboard.c when it gets the |
| 607 | MENU_BAR_ACTIVATE_EVENT out of the Emacs event queue. |
| 608 | |
| 609 | To activate the menu bar, we use the X button-press event |
| 610 | that was saved in saved_menu_event. |
| 611 | That makes the toolkit do its thing. |
| 612 | |
| 613 | But first we recompute the menu bar contents (the whole tree). |
| 614 | |
| 615 | The reason for saving the button event until here, instead of |
| 616 | passing it to the toolkit right away, is that we can safely |
| 617 | execute Lisp code. */ |
| 618 | |
| 619 | void |
| 620 | x_activate_menubar (struct frame *f) |
| 621 | { |
| 622 | eassert (FRAME_X_P (f)); |
| 623 | |
| 624 | if (!f->output_data.x->saved_menu_event->type) |
| 625 | return; |
| 626 | |
| 627 | #ifdef USE_GTK |
| 628 | if (! xg_win_to_widget (FRAME_X_DISPLAY (f), |
| 629 | f->output_data.x->saved_menu_event->xany.window)) |
| 630 | return; |
| 631 | #endif |
| 632 | |
| 633 | set_frame_menubar (f, 0, 1); |
| 634 | block_input (); |
| 635 | popup_activated_flag = 1; |
| 636 | #ifdef USE_GTK |
| 637 | XPutBackEvent (f->output_data.x->display_info->display, |
| 638 | f->output_data.x->saved_menu_event); |
| 639 | #else |
| 640 | XtDispatchEvent (f->output_data.x->saved_menu_event); |
| 641 | #endif |
| 642 | unblock_input (); |
| 643 | |
| 644 | /* Ignore this if we get it a second time. */ |
| 645 | f->output_data.x->saved_menu_event->type = 0; |
| 646 | } |
| 647 | |
| 648 | /* This callback is invoked when the user selects a menubar cascade |
| 649 | pushbutton, but before the pulldown menu is posted. */ |
| 650 | |
| 651 | #ifndef USE_GTK |
| 652 | static void |
| 653 | popup_activate_callback (Widget widget, LWLIB_ID id, XtPointer client_data) |
| 654 | { |
| 655 | popup_activated_flag = 1; |
| 656 | #ifdef USE_X_TOOLKIT |
| 657 | x_activate_timeout_atimer (); |
| 658 | #endif |
| 659 | } |
| 660 | #endif |
| 661 | |
| 662 | /* This callback is invoked when a dialog or menu is finished being |
| 663 | used and has been unposted. */ |
| 664 | |
| 665 | static void |
| 666 | popup_deactivate_callback ( |
| 667 | #ifdef USE_GTK |
| 668 | GtkWidget *widget, gpointer client_data |
| 669 | #else |
| 670 | Widget widget, LWLIB_ID id, XtPointer client_data |
| 671 | #endif |
| 672 | ) |
| 673 | { |
| 674 | popup_activated_flag = 0; |
| 675 | } |
| 676 | |
| 677 | |
| 678 | /* Function that finds the frame for WIDGET and shows the HELP text |
| 679 | for that widget. |
| 680 | F is the frame if known, or NULL if not known. */ |
| 681 | static void |
| 682 | show_help_event (struct frame *f, xt_or_gtk_widget widget, Lisp_Object help) |
| 683 | { |
| 684 | Lisp_Object frame; |
| 685 | |
| 686 | if (f) |
| 687 | { |
| 688 | XSETFRAME (frame, f); |
| 689 | kbd_buffer_store_help_event (frame, help); |
| 690 | } |
| 691 | else |
| 692 | { |
| 693 | #if 0 /* This code doesn't do anything useful. ++kfs */ |
| 694 | /* WIDGET is the popup menu. It's parent is the frame's |
| 695 | widget. See which frame that is. */ |
| 696 | xt_or_gtk_widget frame_widget = XtParent (widget); |
| 697 | Lisp_Object tail; |
| 698 | |
| 699 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) |
| 700 | { |
| 701 | frame = XCAR (tail); |
| 702 | if (FRAMEP (frame) |
| 703 | && (f = XFRAME (frame), |
| 704 | FRAME_X_P (f) && f->output_data.x->widget == frame_widget)) |
| 705 | break; |
| 706 | } |
| 707 | #endif |
| 708 | show_help_echo (help, Qnil, Qnil, Qnil); |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | /* Callback called when menu items are highlighted/unhighlighted |
| 713 | while moving the mouse over them. WIDGET is the menu bar or menu |
| 714 | popup widget. ID is its LWLIB_ID. CALL_DATA contains a pointer to |
| 715 | the data structure for the menu item, or null in case of |
| 716 | unhighlighting. */ |
| 717 | |
| 718 | #ifdef USE_GTK |
| 719 | static void |
| 720 | menu_highlight_callback (GtkWidget *widget, gpointer call_data) |
| 721 | { |
| 722 | xg_menu_item_cb_data *cb_data; |
| 723 | Lisp_Object help; |
| 724 | |
| 725 | cb_data = (xg_menu_item_cb_data*) g_object_get_data (G_OBJECT (widget), |
| 726 | XG_ITEM_DATA); |
| 727 | if (! cb_data) return; |
| 728 | |
| 729 | help = call_data ? cb_data->help : Qnil; |
| 730 | |
| 731 | /* If popup_activated_flag is greater than 1 we are in a popup menu. |
| 732 | Don't pass the frame to show_help_event for those. |
| 733 | Passing frame creates an Emacs event. As we are looping in |
| 734 | popup_widget_loop, it won't be handled. Passing NULL shows the tip |
| 735 | directly without using an Emacs event. This is what the Lucid code |
| 736 | does below. */ |
| 737 | show_help_event (popup_activated_flag <= 1 ? cb_data->cl_data->f : NULL, |
| 738 | widget, help); |
| 739 | } |
| 740 | #else |
| 741 | static void |
| 742 | menu_highlight_callback (Widget widget, LWLIB_ID id, void *call_data) |
| 743 | { |
| 744 | struct frame *f; |
| 745 | Lisp_Object help; |
| 746 | |
| 747 | widget_value *wv = (widget_value *) call_data; |
| 748 | |
| 749 | help = wv ? wv->help : Qnil; |
| 750 | |
| 751 | /* Determine the frame for the help event. */ |
| 752 | f = menubar_id_to_frame (id); |
| 753 | |
| 754 | show_help_event (f, widget, help); |
| 755 | } |
| 756 | #endif |
| 757 | |
| 758 | #ifdef USE_GTK |
| 759 | /* Gtk calls callbacks just because we tell it what item should be |
| 760 | selected in a radio group. If this variable is set to a non-zero |
| 761 | value, we are creating menus and don't want callbacks right now. |
| 762 | */ |
| 763 | static int xg_crazy_callback_abort; |
| 764 | |
| 765 | /* This callback is called from the menu bar pulldown menu |
| 766 | when the user makes a selection. |
| 767 | Figure out what the user chose |
| 768 | and put the appropriate events into the keyboard buffer. */ |
| 769 | static void |
| 770 | menubar_selection_callback (GtkWidget *widget, gpointer client_data) |
| 771 | { |
| 772 | xg_menu_item_cb_data *cb_data = (xg_menu_item_cb_data*) client_data; |
| 773 | |
| 774 | if (xg_crazy_callback_abort) |
| 775 | return; |
| 776 | |
| 777 | if (! cb_data || ! cb_data->cl_data || ! cb_data->cl_data->f) |
| 778 | return; |
| 779 | |
| 780 | /* For a group of radio buttons, GTK calls the selection callback first |
| 781 | for the item that was active before the selection and then for the one that |
| 782 | is active after the selection. For C-h k this means we get the help on |
| 783 | the deselected item and then the selected item is executed. Prevent that |
| 784 | by ignoring the non-active item. */ |
| 785 | if (GTK_IS_RADIO_MENU_ITEM (widget) |
| 786 | && ! gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (widget))) |
| 787 | return; |
| 788 | |
| 789 | /* When a menu is popped down, X generates a focus event (i.e. focus |
| 790 | goes back to the frame below the menu). Since GTK buffers events, |
| 791 | we force it out here before the menu selection event. Otherwise |
| 792 | sit-for will exit at once if the focus event follows the menu selection |
| 793 | event. */ |
| 794 | |
| 795 | block_input (); |
| 796 | while (gtk_events_pending ()) |
| 797 | gtk_main_iteration (); |
| 798 | unblock_input (); |
| 799 | |
| 800 | find_and_call_menu_selection (cb_data->cl_data->f, |
| 801 | cb_data->cl_data->menu_bar_items_used, |
| 802 | cb_data->cl_data->menu_bar_vector, |
| 803 | cb_data->call_data); |
| 804 | } |
| 805 | |
| 806 | #else /* not USE_GTK */ |
| 807 | |
| 808 | /* This callback is called from the menu bar pulldown menu |
| 809 | when the user makes a selection. |
| 810 | Figure out what the user chose |
| 811 | and put the appropriate events into the keyboard buffer. */ |
| 812 | static void |
| 813 | menubar_selection_callback (Widget widget, LWLIB_ID id, XtPointer client_data) |
| 814 | { |
| 815 | struct frame *f; |
| 816 | |
| 817 | f = menubar_id_to_frame (id); |
| 818 | if (!f) |
| 819 | return; |
| 820 | find_and_call_menu_selection (f, f->menu_bar_items_used, |
| 821 | f->menu_bar_vector, client_data); |
| 822 | } |
| 823 | #endif /* not USE_GTK */ |
| 824 | \f |
| 825 | /* Recompute all the widgets of frame F, when the menu bar has been |
| 826 | changed. */ |
| 827 | |
| 828 | static void |
| 829 | update_frame_menubar (struct frame *f) |
| 830 | { |
| 831 | #ifdef USE_GTK |
| 832 | xg_update_frame_menubar (f); |
| 833 | #else |
| 834 | struct x_output *x; |
| 835 | int columns, rows; |
| 836 | |
| 837 | eassert (FRAME_X_P (f)); |
| 838 | |
| 839 | x = f->output_data.x; |
| 840 | |
| 841 | if (!x->menubar_widget || XtIsManaged (x->menubar_widget)) |
| 842 | return; |
| 843 | |
| 844 | block_input (); |
| 845 | /* Save the size of the frame because the pane widget doesn't accept |
| 846 | to resize itself. So force it. */ |
| 847 | columns = FRAME_COLS (f); |
| 848 | rows = FRAME_LINES (f); |
| 849 | |
| 850 | /* Do the voodoo which means "I'm changing lots of things, don't try |
| 851 | to refigure sizes until I'm done." */ |
| 852 | lw_refigure_widget (x->column_widget, False); |
| 853 | |
| 854 | /* The order in which children are managed is the top to bottom |
| 855 | order in which they are displayed in the paned window. First, |
| 856 | remove the text-area widget. */ |
| 857 | XtUnmanageChild (x->edit_widget); |
| 858 | |
| 859 | /* Remove the menubar that is there now, and put up the menubar that |
| 860 | should be there. */ |
| 861 | XtManageChild (x->menubar_widget); |
| 862 | XtMapWidget (x->menubar_widget); |
| 863 | XtVaSetValues (x->menubar_widget, XtNmappedWhenManaged, 1, NULL); |
| 864 | |
| 865 | /* Re-manage the text-area widget, and then thrash the sizes. */ |
| 866 | XtManageChild (x->edit_widget); |
| 867 | lw_refigure_widget (x->column_widget, True); |
| 868 | |
| 869 | /* Force the pane widget to resize itself with the right values. */ |
| 870 | EmacsFrameSetCharSize (x->edit_widget, columns, rows); |
| 871 | unblock_input (); |
| 872 | #endif |
| 873 | } |
| 874 | |
| 875 | #ifdef USE_LUCID |
| 876 | static void |
| 877 | apply_systemfont_to_dialog (Widget w) |
| 878 | { |
| 879 | const char *fn = xsettings_get_system_normal_font (); |
| 880 | if (fn) |
| 881 | { |
| 882 | XrmDatabase db = XtDatabase (XtDisplay (w)); |
| 883 | if (db) |
| 884 | XrmPutStringResource (&db, "*dialog.font", fn); |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | static void |
| 889 | apply_systemfont_to_menu (struct frame *f, Widget w) |
| 890 | { |
| 891 | const char *fn = xsettings_get_system_normal_font (); |
| 892 | |
| 893 | if (fn) |
| 894 | { |
| 895 | XrmDatabase db = XtDatabase (XtDisplay (w)); |
| 896 | if (db) |
| 897 | { |
| 898 | XrmPutStringResource (&db, "*menubar*font", fn); |
| 899 | XrmPutStringResource (&db, "*popup*font", fn); |
| 900 | } |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | #endif |
| 905 | |
| 906 | /* Set the contents of the menubar widgets of frame F. |
| 907 | The argument FIRST_TIME is currently ignored; |
| 908 | it is set the first time this is called, from initialize_frame_menubar. */ |
| 909 | |
| 910 | void |
| 911 | set_frame_menubar (struct frame *f, bool first_time, bool deep_p) |
| 912 | { |
| 913 | xt_or_gtk_widget menubar_widget; |
| 914 | #ifdef USE_X_TOOLKIT |
| 915 | LWLIB_ID id; |
| 916 | #endif |
| 917 | Lisp_Object items; |
| 918 | widget_value *wv, *first_wv, *prev_wv = 0; |
| 919 | int i; |
| 920 | int *submenu_start, *submenu_end; |
| 921 | bool *submenu_top_level_items; |
| 922 | int *submenu_n_panes; |
| 923 | |
| 924 | eassert (FRAME_X_P (f)); |
| 925 | |
| 926 | menubar_widget = f->output_data.x->menubar_widget; |
| 927 | |
| 928 | XSETFRAME (Vmenu_updating_frame, f); |
| 929 | |
| 930 | #ifdef USE_X_TOOLKIT |
| 931 | if (f->output_data.x->id == 0) |
| 932 | f->output_data.x->id = next_menubar_widget_id++; |
| 933 | id = f->output_data.x->id; |
| 934 | #endif |
| 935 | |
| 936 | if (! menubar_widget) |
| 937 | deep_p = 1; |
| 938 | /* Make the first call for any given frame always go deep. */ |
| 939 | else if (!f->output_data.x->saved_menu_event && !deep_p) |
| 940 | { |
| 941 | deep_p = 1; |
| 942 | f->output_data.x->saved_menu_event = xmalloc (sizeof (XEvent)); |
| 943 | f->output_data.x->saved_menu_event->type = 0; |
| 944 | } |
| 945 | |
| 946 | #ifdef USE_GTK |
| 947 | /* If we have detached menus, we must update deep so detached menus |
| 948 | also gets updated. */ |
| 949 | deep_p = deep_p || xg_have_tear_offs (); |
| 950 | #endif |
| 951 | |
| 952 | if (deep_p) |
| 953 | { |
| 954 | /* Make a widget-value tree representing the entire menu trees. */ |
| 955 | |
| 956 | struct buffer *prev = current_buffer; |
| 957 | Lisp_Object buffer; |
| 958 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 959 | int previous_menu_items_used = f->menu_bar_items_used; |
| 960 | Lisp_Object *previous_items |
| 961 | = alloca (previous_menu_items_used * sizeof *previous_items); |
| 962 | int subitems; |
| 963 | |
| 964 | /* If we are making a new widget, its contents are empty, |
| 965 | do always reinitialize them. */ |
| 966 | if (! menubar_widget) |
| 967 | previous_menu_items_used = 0; |
| 968 | |
| 969 | buffer = XWINDOW (FRAME_SELECTED_WINDOW (f))->contents; |
| 970 | specbind (Qinhibit_quit, Qt); |
| 971 | /* Don't let the debugger step into this code |
| 972 | because it is not reentrant. */ |
| 973 | specbind (Qdebug_on_next_call, Qnil); |
| 974 | |
| 975 | record_unwind_save_match_data (); |
| 976 | if (NILP (Voverriding_local_map_menu_flag)) |
| 977 | { |
| 978 | specbind (Qoverriding_terminal_local_map, Qnil); |
| 979 | specbind (Qoverriding_local_map, Qnil); |
| 980 | } |
| 981 | |
| 982 | set_buffer_internal_1 (XBUFFER (buffer)); |
| 983 | |
| 984 | /* Run the Lucid hook. */ |
| 985 | safe_run_hooks (Qactivate_menubar_hook); |
| 986 | |
| 987 | /* If it has changed current-menubar from previous value, |
| 988 | really recompute the menubar from the value. */ |
| 989 | if (! NILP (Vlucid_menu_bar_dirty_flag)) |
| 990 | call0 (Qrecompute_lucid_menubar); |
| 991 | safe_run_hooks (Qmenu_bar_update_hook); |
| 992 | fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f))); |
| 993 | |
| 994 | items = FRAME_MENU_BAR_ITEMS (f); |
| 995 | |
| 996 | /* Save the frame's previous menu bar contents data. */ |
| 997 | if (previous_menu_items_used) |
| 998 | memcpy (previous_items, XVECTOR (f->menu_bar_vector)->contents, |
| 999 | previous_menu_items_used * word_size); |
| 1000 | |
| 1001 | /* Fill in menu_items with the current menu bar contents. |
| 1002 | This can evaluate Lisp code. */ |
| 1003 | save_menu_items (); |
| 1004 | |
| 1005 | menu_items = f->menu_bar_vector; |
| 1006 | menu_items_allocated = VECTORP (menu_items) ? ASIZE (menu_items) : 0; |
| 1007 | subitems = ASIZE (items) / 4; |
| 1008 | submenu_start = alloca ((subitems + 1) * sizeof *submenu_start); |
| 1009 | submenu_end = alloca (subitems * sizeof *submenu_end); |
| 1010 | submenu_n_panes = alloca (subitems * sizeof *submenu_n_panes); |
| 1011 | submenu_top_level_items = alloca (subitems |
| 1012 | * sizeof *submenu_top_level_items); |
| 1013 | init_menu_items (); |
| 1014 | for (i = 0; i < subitems; i++) |
| 1015 | { |
| 1016 | Lisp_Object key, string, maps; |
| 1017 | |
| 1018 | key = AREF (items, 4 * i); |
| 1019 | string = AREF (items, 4 * i + 1); |
| 1020 | maps = AREF (items, 4 * i + 2); |
| 1021 | if (NILP (string)) |
| 1022 | break; |
| 1023 | |
| 1024 | submenu_start[i] = menu_items_used; |
| 1025 | |
| 1026 | menu_items_n_panes = 0; |
| 1027 | submenu_top_level_items[i] |
| 1028 | = parse_single_submenu (key, string, maps); |
| 1029 | submenu_n_panes[i] = menu_items_n_panes; |
| 1030 | |
| 1031 | submenu_end[i] = menu_items_used; |
| 1032 | } |
| 1033 | |
| 1034 | submenu_start[i] = -1; |
| 1035 | finish_menu_items (); |
| 1036 | |
| 1037 | /* Convert menu_items into widget_value trees |
| 1038 | to display the menu. This cannot evaluate Lisp code. */ |
| 1039 | |
| 1040 | wv = xmalloc_widget_value (); |
| 1041 | wv->name = "menubar"; |
| 1042 | wv->value = 0; |
| 1043 | wv->enabled = 1; |
| 1044 | wv->button_type = BUTTON_TYPE_NONE; |
| 1045 | wv->help = Qnil; |
| 1046 | first_wv = wv; |
| 1047 | |
| 1048 | for (i = 0; submenu_start[i] >= 0; i++) |
| 1049 | { |
| 1050 | menu_items_n_panes = submenu_n_panes[i]; |
| 1051 | wv = digest_single_submenu (submenu_start[i], submenu_end[i], |
| 1052 | submenu_top_level_items[i]); |
| 1053 | if (prev_wv) |
| 1054 | prev_wv->next = wv; |
| 1055 | else |
| 1056 | first_wv->contents = wv; |
| 1057 | /* Don't set wv->name here; GC during the loop might relocate it. */ |
| 1058 | wv->enabled = 1; |
| 1059 | wv->button_type = BUTTON_TYPE_NONE; |
| 1060 | prev_wv = wv; |
| 1061 | } |
| 1062 | |
| 1063 | set_buffer_internal_1 (prev); |
| 1064 | |
| 1065 | /* If there has been no change in the Lisp-level contents |
| 1066 | of the menu bar, skip redisplaying it. Just exit. */ |
| 1067 | |
| 1068 | /* Compare the new menu items with the ones computed last time. */ |
| 1069 | for (i = 0; i < previous_menu_items_used; i++) |
| 1070 | if (menu_items_used == i |
| 1071 | || (!EQ (previous_items[i], AREF (menu_items, i)))) |
| 1072 | break; |
| 1073 | if (i == menu_items_used && i == previous_menu_items_used && i != 0) |
| 1074 | { |
| 1075 | /* The menu items have not changed. Don't bother updating |
| 1076 | the menus in any form, since it would be a no-op. */ |
| 1077 | free_menubar_widget_value_tree (first_wv); |
| 1078 | discard_menu_items (); |
| 1079 | unbind_to (specpdl_count, Qnil); |
| 1080 | return; |
| 1081 | } |
| 1082 | |
| 1083 | /* The menu items are different, so store them in the frame. */ |
| 1084 | fset_menu_bar_vector (f, menu_items); |
| 1085 | f->menu_bar_items_used = menu_items_used; |
| 1086 | |
| 1087 | /* This undoes save_menu_items. */ |
| 1088 | unbind_to (specpdl_count, Qnil); |
| 1089 | |
| 1090 | /* Now GC cannot happen during the lifetime of the widget_value, |
| 1091 | so it's safe to store data from a Lisp_String. */ |
| 1092 | wv = first_wv->contents; |
| 1093 | for (i = 0; i < ASIZE (items); i += 4) |
| 1094 | { |
| 1095 | Lisp_Object string; |
| 1096 | string = AREF (items, i + 1); |
| 1097 | if (NILP (string)) |
| 1098 | break; |
| 1099 | wv->name = SSDATA (string); |
| 1100 | update_submenu_strings (wv->contents); |
| 1101 | wv = wv->next; |
| 1102 | } |
| 1103 | |
| 1104 | } |
| 1105 | else |
| 1106 | { |
| 1107 | /* Make a widget-value tree containing |
| 1108 | just the top level menu bar strings. */ |
| 1109 | |
| 1110 | wv = xmalloc_widget_value (); |
| 1111 | wv->name = "menubar"; |
| 1112 | wv->value = 0; |
| 1113 | wv->enabled = 1; |
| 1114 | wv->button_type = BUTTON_TYPE_NONE; |
| 1115 | wv->help = Qnil; |
| 1116 | first_wv = wv; |
| 1117 | |
| 1118 | items = FRAME_MENU_BAR_ITEMS (f); |
| 1119 | for (i = 0; i < ASIZE (items); i += 4) |
| 1120 | { |
| 1121 | Lisp_Object string; |
| 1122 | |
| 1123 | string = AREF (items, i + 1); |
| 1124 | if (NILP (string)) |
| 1125 | break; |
| 1126 | |
| 1127 | wv = xmalloc_widget_value (); |
| 1128 | wv->name = SSDATA (string); |
| 1129 | wv->value = 0; |
| 1130 | wv->enabled = 1; |
| 1131 | wv->button_type = BUTTON_TYPE_NONE; |
| 1132 | wv->help = Qnil; |
| 1133 | /* This prevents lwlib from assuming this |
| 1134 | menu item is really supposed to be empty. */ |
| 1135 | /* The intptr_t cast avoids a warning. |
| 1136 | This value just has to be different from small integers. */ |
| 1137 | wv->call_data = (void *) (intptr_t) (-1); |
| 1138 | |
| 1139 | if (prev_wv) |
| 1140 | prev_wv->next = wv; |
| 1141 | else |
| 1142 | first_wv->contents = wv; |
| 1143 | prev_wv = wv; |
| 1144 | } |
| 1145 | |
| 1146 | /* Forget what we thought we knew about what is in the |
| 1147 | detailed contents of the menu bar menus. |
| 1148 | Changing the top level always destroys the contents. */ |
| 1149 | f->menu_bar_items_used = 0; |
| 1150 | } |
| 1151 | |
| 1152 | /* Create or update the menu bar widget. */ |
| 1153 | |
| 1154 | block_input (); |
| 1155 | |
| 1156 | #ifdef USE_GTK |
| 1157 | xg_crazy_callback_abort = 1; |
| 1158 | if (menubar_widget) |
| 1159 | { |
| 1160 | /* The fourth arg is DEEP_P, which says to consider the entire |
| 1161 | menu trees we supply, rather than just the menu bar item names. */ |
| 1162 | xg_modify_menubar_widgets (menubar_widget, |
| 1163 | f, |
| 1164 | first_wv, |
| 1165 | deep_p, |
| 1166 | G_CALLBACK (menubar_selection_callback), |
| 1167 | G_CALLBACK (popup_deactivate_callback), |
| 1168 | G_CALLBACK (menu_highlight_callback)); |
| 1169 | } |
| 1170 | else |
| 1171 | { |
| 1172 | menubar_widget |
| 1173 | = xg_create_widget ("menubar", "menubar", f, first_wv, |
| 1174 | G_CALLBACK (menubar_selection_callback), |
| 1175 | G_CALLBACK (popup_deactivate_callback), |
| 1176 | G_CALLBACK (menu_highlight_callback)); |
| 1177 | |
| 1178 | f->output_data.x->menubar_widget = menubar_widget; |
| 1179 | } |
| 1180 | |
| 1181 | |
| 1182 | #else /* not USE_GTK */ |
| 1183 | if (menubar_widget) |
| 1184 | { |
| 1185 | /* Disable resizing (done for Motif!) */ |
| 1186 | lw_allow_resizing (f->output_data.x->widget, False); |
| 1187 | |
| 1188 | /* The third arg is DEEP_P, which says to consider the entire |
| 1189 | menu trees we supply, rather than just the menu bar item names. */ |
| 1190 | lw_modify_all_widgets (id, first_wv, deep_p); |
| 1191 | |
| 1192 | /* Re-enable the edit widget to resize. */ |
| 1193 | lw_allow_resizing (f->output_data.x->widget, True); |
| 1194 | } |
| 1195 | else |
| 1196 | { |
| 1197 | char menuOverride[] = "Ctrl<KeyPress>g: MenuGadgetEscape()"; |
| 1198 | XtTranslations override = XtParseTranslationTable (menuOverride); |
| 1199 | |
| 1200 | #ifdef USE_LUCID |
| 1201 | apply_systemfont_to_menu (f, f->output_data.x->column_widget); |
| 1202 | #endif |
| 1203 | menubar_widget = lw_create_widget ("menubar", "menubar", id, |
| 1204 | first_wv, |
| 1205 | f->output_data.x->column_widget, |
| 1206 | 0, |
| 1207 | popup_activate_callback, |
| 1208 | menubar_selection_callback, |
| 1209 | popup_deactivate_callback, |
| 1210 | menu_highlight_callback); |
| 1211 | f->output_data.x->menubar_widget = menubar_widget; |
| 1212 | |
| 1213 | /* Make menu pop down on C-g. */ |
| 1214 | XtOverrideTranslations (menubar_widget, override); |
| 1215 | } |
| 1216 | |
| 1217 | { |
| 1218 | int menubar_size; |
| 1219 | if (f->output_data.x->menubar_widget) |
| 1220 | XtRealizeWidget (f->output_data.x->menubar_widget); |
| 1221 | |
| 1222 | menubar_size |
| 1223 | = (f->output_data.x->menubar_widget |
| 1224 | ? (f->output_data.x->menubar_widget->core.height |
| 1225 | + f->output_data.x->menubar_widget->core.border_width) |
| 1226 | : 0); |
| 1227 | |
| 1228 | #if 1 /* Experimentally, we now get the right results |
| 1229 | for -geometry -0-0 without this. 24 Aug 96, rms. |
| 1230 | Maybe so, but the menu bar size is missing the pixels so the |
| 1231 | WM size hints are off by these pixels. Jan D, oct 2009. */ |
| 1232 | #ifdef USE_LUCID |
| 1233 | if (FRAME_EXTERNAL_MENU_BAR (f)) |
| 1234 | { |
| 1235 | Dimension ibw = 0; |
| 1236 | XtVaGetValues (f->output_data.x->column_widget, |
| 1237 | XtNinternalBorderWidth, &ibw, NULL); |
| 1238 | menubar_size += ibw; |
| 1239 | } |
| 1240 | #endif /* USE_LUCID */ |
| 1241 | #endif /* 1 */ |
| 1242 | |
| 1243 | f->output_data.x->menubar_height = menubar_size; |
| 1244 | } |
| 1245 | #endif /* not USE_GTK */ |
| 1246 | |
| 1247 | free_menubar_widget_value_tree (first_wv); |
| 1248 | update_frame_menubar (f); |
| 1249 | |
| 1250 | #ifdef USE_GTK |
| 1251 | xg_crazy_callback_abort = 0; |
| 1252 | #endif |
| 1253 | |
| 1254 | unblock_input (); |
| 1255 | } |
| 1256 | |
| 1257 | /* Called from Fx_create_frame to create the initial menubar of a frame |
| 1258 | before it is mapped, so that the window is mapped with the menubar already |
| 1259 | there instead of us tacking it on later and thrashing the window after it |
| 1260 | is visible. */ |
| 1261 | |
| 1262 | void |
| 1263 | initialize_frame_menubar (struct frame *f) |
| 1264 | { |
| 1265 | /* This function is called before the first chance to redisplay |
| 1266 | the frame. It has to be, so the frame will have the right size. */ |
| 1267 | fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f))); |
| 1268 | set_frame_menubar (f, 1, 1); |
| 1269 | } |
| 1270 | |
| 1271 | |
| 1272 | /* Get rid of the menu bar of frame F, and free its storage. |
| 1273 | This is used when deleting a frame, and when turning off the menu bar. |
| 1274 | For GTK this function is in gtkutil.c. */ |
| 1275 | |
| 1276 | #ifndef USE_GTK |
| 1277 | void |
| 1278 | free_frame_menubar (struct frame *f) |
| 1279 | { |
| 1280 | Widget menubar_widget; |
| 1281 | |
| 1282 | eassert (FRAME_X_P (f)); |
| 1283 | |
| 1284 | menubar_widget = f->output_data.x->menubar_widget; |
| 1285 | |
| 1286 | f->output_data.x->menubar_height = 0; |
| 1287 | |
| 1288 | if (menubar_widget) |
| 1289 | { |
| 1290 | #ifdef USE_MOTIF |
| 1291 | /* Removing the menu bar magically changes the shell widget's x |
| 1292 | and y position of (0, 0) which, when the menu bar is turned |
| 1293 | on again, leads to pull-down menus appearing in strange |
| 1294 | positions near the upper-left corner of the display. This |
| 1295 | happens only with some window managers like twm and ctwm, |
| 1296 | but not with other like Motif's mwm or kwm, because the |
| 1297 | latter generate ConfigureNotify events when the menu bar |
| 1298 | is switched off, which fixes the shell position. */ |
| 1299 | Position x0, y0, x1, y1; |
| 1300 | #endif |
| 1301 | |
| 1302 | block_input (); |
| 1303 | |
| 1304 | #ifdef USE_MOTIF |
| 1305 | if (f->output_data.x->widget) |
| 1306 | XtVaGetValues (f->output_data.x->widget, XtNx, &x0, XtNy, &y0, NULL); |
| 1307 | #endif |
| 1308 | |
| 1309 | lw_destroy_all_widgets ((LWLIB_ID) f->output_data.x->id); |
| 1310 | f->output_data.x->menubar_widget = NULL; |
| 1311 | |
| 1312 | if (f->output_data.x->widget) |
| 1313 | { |
| 1314 | #ifdef USE_MOTIF |
| 1315 | XtVaGetValues (f->output_data.x->widget, XtNx, &x1, XtNy, &y1, NULL); |
| 1316 | if (x1 == 0 && y1 == 0) |
| 1317 | XtVaSetValues (f->output_data.x->widget, XtNx, x0, XtNy, y0, NULL); |
| 1318 | #endif |
| 1319 | x_set_window_size (f, 0, FRAME_COLS (f), FRAME_LINES (f)); |
| 1320 | } |
| 1321 | unblock_input (); |
| 1322 | } |
| 1323 | } |
| 1324 | #endif /* not USE_GTK */ |
| 1325 | |
| 1326 | #endif /* USE_X_TOOLKIT || USE_GTK */ |
| 1327 | \f |
| 1328 | /* xmenu_show actually displays a menu using the panes and items in menu_items |
| 1329 | and returns the value selected from it. |
| 1330 | There are two versions of xmenu_show, one for Xt and one for Xlib. |
| 1331 | Both assume input is blocked by the caller. */ |
| 1332 | |
| 1333 | /* F is the frame the menu is for. |
| 1334 | X and Y are the frame-relative specified position, |
| 1335 | relative to the inside upper left corner of the frame F. |
| 1336 | FOR_CLICK is true if this menu was invoked for a mouse click. |
| 1337 | KEYMAPS is true if this menu was specified with keymaps; |
| 1338 | in that case, we return a list containing the chosen item's value |
| 1339 | and perhaps also the pane's prefix. |
| 1340 | TITLE is the specified menu title. |
| 1341 | ERROR is a place to store an error message string in case of failure. |
| 1342 | (We return nil on failure, but the value doesn't actually matter.) */ |
| 1343 | |
| 1344 | #if defined (USE_X_TOOLKIT) || defined (USE_GTK) |
| 1345 | |
| 1346 | /* The item selected in the popup menu. */ |
| 1347 | static Lisp_Object *volatile menu_item_selection; |
| 1348 | |
| 1349 | #ifdef USE_GTK |
| 1350 | |
| 1351 | /* Used when position a popup menu. See menu_position_func and |
| 1352 | create_and_show_popup_menu below. */ |
| 1353 | struct next_popup_x_y |
| 1354 | { |
| 1355 | struct frame *f; |
| 1356 | int x; |
| 1357 | int y; |
| 1358 | }; |
| 1359 | |
| 1360 | /* The menu position function to use if we are not putting a popup |
| 1361 | menu where the pointer is. |
| 1362 | MENU is the menu to pop up. |
| 1363 | X and Y shall on exit contain x/y where the menu shall pop up. |
| 1364 | PUSH_IN is not documented in the GTK manual. |
| 1365 | USER_DATA is any data passed in when calling gtk_menu_popup. |
| 1366 | Here it points to a struct next_popup_x_y where the coordinates |
| 1367 | to store in *X and *Y are as well as the frame for the popup. |
| 1368 | |
| 1369 | Here only X and Y are used. */ |
| 1370 | static void |
| 1371 | menu_position_func (GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer user_data) |
| 1372 | { |
| 1373 | struct next_popup_x_y* data = (struct next_popup_x_y*)user_data; |
| 1374 | GtkRequisition req; |
| 1375 | struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (data->f); |
| 1376 | int disp_width = x_display_pixel_width (dpyinfo); |
| 1377 | int disp_height = x_display_pixel_height (dpyinfo); |
| 1378 | |
| 1379 | *x = data->x; |
| 1380 | *y = data->y; |
| 1381 | |
| 1382 | /* Check if there is room for the menu. If not, adjust x/y so that |
| 1383 | the menu is fully visible. */ |
| 1384 | gtk_widget_get_preferred_size (GTK_WIDGET (menu), NULL, &req); |
| 1385 | if (data->x + req.width > disp_width) |
| 1386 | *x -= data->x + req.width - disp_width; |
| 1387 | if (data->y + req.height > disp_height) |
| 1388 | *y -= data->y + req.height - disp_height; |
| 1389 | } |
| 1390 | |
| 1391 | static void |
| 1392 | popup_selection_callback (GtkWidget *widget, gpointer client_data) |
| 1393 | { |
| 1394 | xg_menu_item_cb_data *cb_data = (xg_menu_item_cb_data*) client_data; |
| 1395 | |
| 1396 | if (xg_crazy_callback_abort) return; |
| 1397 | if (cb_data) menu_item_selection = (Lisp_Object *) cb_data->call_data; |
| 1398 | } |
| 1399 | |
| 1400 | static void |
| 1401 | pop_down_menu (void *arg) |
| 1402 | { |
| 1403 | popup_activated_flag = 0; |
| 1404 | block_input (); |
| 1405 | gtk_widget_destroy (GTK_WIDGET (arg)); |
| 1406 | unblock_input (); |
| 1407 | } |
| 1408 | |
| 1409 | /* Pop up the menu for frame F defined by FIRST_WV at X/Y and loop until the |
| 1410 | menu pops down. |
| 1411 | menu_item_selection will be set to the selection. */ |
| 1412 | static void |
| 1413 | create_and_show_popup_menu (struct frame *f, widget_value *first_wv, int x, int y, |
| 1414 | bool for_click, Time timestamp) |
| 1415 | { |
| 1416 | int i; |
| 1417 | GtkWidget *menu; |
| 1418 | GtkMenuPositionFunc pos_func = 0; /* Pop up at pointer. */ |
| 1419 | struct next_popup_x_y popup_x_y; |
| 1420 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 1421 | bool use_pos_func = ! for_click; |
| 1422 | |
| 1423 | #ifdef HAVE_GTK3 |
| 1424 | /* Always use position function for Gtk3. Otherwise menus may become |
| 1425 | too small to show anything. */ |
| 1426 | use_pos_func = 1; |
| 1427 | #endif |
| 1428 | |
| 1429 | eassert (FRAME_X_P (f)); |
| 1430 | |
| 1431 | xg_crazy_callback_abort = 1; |
| 1432 | menu = xg_create_widget ("popup", first_wv->name, f, first_wv, |
| 1433 | G_CALLBACK (popup_selection_callback), |
| 1434 | G_CALLBACK (popup_deactivate_callback), |
| 1435 | G_CALLBACK (menu_highlight_callback)); |
| 1436 | xg_crazy_callback_abort = 0; |
| 1437 | |
| 1438 | if (use_pos_func) |
| 1439 | { |
| 1440 | /* Not invoked by a click. pop up at x/y. */ |
| 1441 | pos_func = menu_position_func; |
| 1442 | |
| 1443 | /* Adjust coordinates to be root-window-relative. */ |
| 1444 | x += f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); |
| 1445 | y += f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); |
| 1446 | |
| 1447 | popup_x_y.x = x; |
| 1448 | popup_x_y.y = y; |
| 1449 | popup_x_y.f = f; |
| 1450 | |
| 1451 | i = 0; /* gtk_menu_popup needs this to be 0 for a non-button popup. */ |
| 1452 | } |
| 1453 | |
| 1454 | if (for_click) |
| 1455 | { |
| 1456 | for (i = 0; i < 5; i++) |
| 1457 | if (FRAME_X_DISPLAY_INFO (f)->grabbed & (1 << i)) |
| 1458 | break; |
| 1459 | } |
| 1460 | |
| 1461 | /* Display the menu. */ |
| 1462 | gtk_widget_show_all (menu); |
| 1463 | |
| 1464 | gtk_menu_popup (GTK_MENU (menu), 0, 0, pos_func, &popup_x_y, i, |
| 1465 | timestamp ? timestamp : gtk_get_current_event_time ()); |
| 1466 | |
| 1467 | record_unwind_protect_ptr (pop_down_menu, menu); |
| 1468 | |
| 1469 | if (gtk_widget_get_mapped (menu)) |
| 1470 | { |
| 1471 | /* Set this to one. popup_widget_loop increases it by one, so it becomes |
| 1472 | two. show_help_echo uses this to detect popup menus. */ |
| 1473 | popup_activated_flag = 1; |
| 1474 | /* Process events that apply to the menu. */ |
| 1475 | popup_widget_loop (1, menu); |
| 1476 | } |
| 1477 | |
| 1478 | unbind_to (specpdl_count, Qnil); |
| 1479 | |
| 1480 | /* Must reset this manually because the button release event is not passed |
| 1481 | to Emacs event loop. */ |
| 1482 | FRAME_X_DISPLAY_INFO (f)->grabbed = 0; |
| 1483 | } |
| 1484 | |
| 1485 | #else /* not USE_GTK */ |
| 1486 | |
| 1487 | /* We need a unique id for each widget handled by the Lucid Widget |
| 1488 | library. |
| 1489 | |
| 1490 | For the main windows, and popup menus, we use this counter, |
| 1491 | which we increment each time after use. This starts from 1<<16. |
| 1492 | |
| 1493 | For menu bars, we use numbers starting at 0, counted in |
| 1494 | next_menubar_widget_id. */ |
| 1495 | LWLIB_ID widget_id_tick; |
| 1496 | |
| 1497 | static void |
| 1498 | popup_selection_callback (Widget widget, LWLIB_ID id, XtPointer client_data) |
| 1499 | { |
| 1500 | menu_item_selection = (Lisp_Object *) client_data; |
| 1501 | } |
| 1502 | |
| 1503 | /* ARG is the LWLIB ID of the dialog box, represented |
| 1504 | as a Lisp object as (HIGHPART . LOWPART). */ |
| 1505 | |
| 1506 | static void |
| 1507 | pop_down_menu (Lisp_Object arg) |
| 1508 | { |
| 1509 | LWLIB_ID id = (XINT (XCAR (arg)) << 4 * sizeof (LWLIB_ID) |
| 1510 | | XINT (XCDR (arg))); |
| 1511 | |
| 1512 | block_input (); |
| 1513 | lw_destroy_all_widgets (id); |
| 1514 | unblock_input (); |
| 1515 | popup_activated_flag = 0; |
| 1516 | } |
| 1517 | |
| 1518 | /* Pop up the menu for frame F defined by FIRST_WV at X/Y and loop until the |
| 1519 | menu pops down. |
| 1520 | menu_item_selection will be set to the selection. */ |
| 1521 | static void |
| 1522 | create_and_show_popup_menu (struct frame *f, widget_value *first_wv, |
| 1523 | int x, int y, bool for_click, Time timestamp) |
| 1524 | { |
| 1525 | int i; |
| 1526 | Arg av[2]; |
| 1527 | int ac = 0; |
| 1528 | XEvent dummy; |
| 1529 | XButtonPressedEvent *event = &(dummy.xbutton); |
| 1530 | LWLIB_ID menu_id; |
| 1531 | Widget menu; |
| 1532 | |
| 1533 | eassert (FRAME_X_P (f)); |
| 1534 | |
| 1535 | #ifdef USE_LUCID |
| 1536 | apply_systemfont_to_menu (f, f->output_data.x->widget); |
| 1537 | #endif |
| 1538 | |
| 1539 | menu_id = widget_id_tick++; |
| 1540 | menu = lw_create_widget ("popup", first_wv->name, menu_id, first_wv, |
| 1541 | f->output_data.x->widget, 1, 0, |
| 1542 | popup_selection_callback, |
| 1543 | popup_deactivate_callback, |
| 1544 | menu_highlight_callback); |
| 1545 | |
| 1546 | event->type = ButtonPress; |
| 1547 | event->serial = 0; |
| 1548 | event->send_event = 0; |
| 1549 | event->display = FRAME_X_DISPLAY (f); |
| 1550 | event->time = CurrentTime; |
| 1551 | event->root = FRAME_X_DISPLAY_INFO (f)->root_window; |
| 1552 | event->window = event->subwindow = event->root; |
| 1553 | event->x = x; |
| 1554 | event->y = y; |
| 1555 | |
| 1556 | /* Adjust coordinates to be root-window-relative. */ |
| 1557 | x += f->left_pos + FRAME_OUTER_TO_INNER_DIFF_X (f); |
| 1558 | y += f->top_pos + FRAME_OUTER_TO_INNER_DIFF_Y (f); |
| 1559 | |
| 1560 | event->x_root = x; |
| 1561 | event->y_root = y; |
| 1562 | |
| 1563 | event->state = 0; |
| 1564 | event->button = 0; |
| 1565 | for (i = 0; i < 5; i++) |
| 1566 | if (FRAME_X_DISPLAY_INFO (f)->grabbed & (1 << i)) |
| 1567 | event->button = i; |
| 1568 | |
| 1569 | /* Don't allow any geometry request from the user. */ |
| 1570 | XtSetArg (av[ac], XtNgeometry, 0); ac++; |
| 1571 | XtSetValues (menu, av, ac); |
| 1572 | |
| 1573 | /* Display the menu. */ |
| 1574 | lw_popup_menu (menu, &dummy); |
| 1575 | popup_activated_flag = 1; |
| 1576 | x_activate_timeout_atimer (); |
| 1577 | |
| 1578 | { |
| 1579 | int fact = 4 * sizeof (LWLIB_ID); |
| 1580 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 1581 | record_unwind_protect (pop_down_menu, |
| 1582 | Fcons (make_number (menu_id >> (fact)), |
| 1583 | make_number (menu_id & ~(-1 << (fact))))); |
| 1584 | |
| 1585 | /* Process events that apply to the menu. */ |
| 1586 | popup_get_selection ((XEvent *) 0, FRAME_X_DISPLAY_INFO (f), menu_id, 1); |
| 1587 | |
| 1588 | unbind_to (specpdl_count, Qnil); |
| 1589 | } |
| 1590 | } |
| 1591 | |
| 1592 | #endif /* not USE_GTK */ |
| 1593 | |
| 1594 | static void |
| 1595 | cleanup_widget_value_tree (void *arg) |
| 1596 | { |
| 1597 | free_menubar_widget_value_tree (arg); |
| 1598 | } |
| 1599 | |
| 1600 | Lisp_Object |
| 1601 | xmenu_show (struct frame *f, int x, int y, bool for_click, bool keymaps, |
| 1602 | Lisp_Object title, const char **error_name, Time timestamp) |
| 1603 | { |
| 1604 | int i; |
| 1605 | widget_value *wv, *save_wv = 0, *first_wv = 0, *prev_wv = 0; |
| 1606 | widget_value **submenu_stack |
| 1607 | = alloca (menu_items_used * sizeof *submenu_stack); |
| 1608 | Lisp_Object *subprefix_stack |
| 1609 | = alloca (menu_items_used * sizeof *subprefix_stack); |
| 1610 | int submenu_depth = 0; |
| 1611 | |
| 1612 | int first_pane; |
| 1613 | |
| 1614 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 1615 | |
| 1616 | eassert (FRAME_X_P (f)); |
| 1617 | |
| 1618 | *error_name = NULL; |
| 1619 | |
| 1620 | if (menu_items_used <= MENU_ITEMS_PANE_LENGTH) |
| 1621 | { |
| 1622 | *error_name = "Empty menu"; |
| 1623 | return Qnil; |
| 1624 | } |
| 1625 | |
| 1626 | /* Create a tree of widget_value objects |
| 1627 | representing the panes and their items. */ |
| 1628 | wv = xmalloc_widget_value (); |
| 1629 | wv->name = "menu"; |
| 1630 | wv->value = 0; |
| 1631 | wv->enabled = 1; |
| 1632 | wv->button_type = BUTTON_TYPE_NONE; |
| 1633 | wv->help =Qnil; |
| 1634 | first_wv = wv; |
| 1635 | first_pane = 1; |
| 1636 | |
| 1637 | /* Loop over all panes and items, filling in the tree. */ |
| 1638 | i = 0; |
| 1639 | while (i < menu_items_used) |
| 1640 | { |
| 1641 | if (EQ (AREF (menu_items, i), Qnil)) |
| 1642 | { |
| 1643 | submenu_stack[submenu_depth++] = save_wv; |
| 1644 | save_wv = prev_wv; |
| 1645 | prev_wv = 0; |
| 1646 | first_pane = 1; |
| 1647 | i++; |
| 1648 | } |
| 1649 | else if (EQ (AREF (menu_items, i), Qlambda)) |
| 1650 | { |
| 1651 | prev_wv = save_wv; |
| 1652 | save_wv = submenu_stack[--submenu_depth]; |
| 1653 | first_pane = 0; |
| 1654 | i++; |
| 1655 | } |
| 1656 | else if (EQ (AREF (menu_items, i), Qt) |
| 1657 | && submenu_depth != 0) |
| 1658 | i += MENU_ITEMS_PANE_LENGTH; |
| 1659 | /* Ignore a nil in the item list. |
| 1660 | It's meaningful only for dialog boxes. */ |
| 1661 | else if (EQ (AREF (menu_items, i), Qquote)) |
| 1662 | i += 1; |
| 1663 | else if (EQ (AREF (menu_items, i), Qt)) |
| 1664 | { |
| 1665 | /* Create a new pane. */ |
| 1666 | Lisp_Object pane_name, prefix; |
| 1667 | const char *pane_string; |
| 1668 | |
| 1669 | pane_name = AREF (menu_items, i + MENU_ITEMS_PANE_NAME); |
| 1670 | prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 1671 | |
| 1672 | #ifndef HAVE_MULTILINGUAL_MENU |
| 1673 | if (STRINGP (pane_name) && STRING_MULTIBYTE (pane_name)) |
| 1674 | { |
| 1675 | pane_name = ENCODE_MENU_STRING (pane_name); |
| 1676 | ASET (menu_items, i + MENU_ITEMS_PANE_NAME, pane_name); |
| 1677 | } |
| 1678 | #endif |
| 1679 | pane_string = (NILP (pane_name) |
| 1680 | ? "" : SSDATA (pane_name)); |
| 1681 | /* If there is just one top-level pane, put all its items directly |
| 1682 | under the top-level menu. */ |
| 1683 | if (menu_items_n_panes == 1) |
| 1684 | pane_string = ""; |
| 1685 | |
| 1686 | /* If the pane has a meaningful name, |
| 1687 | make the pane a top-level menu item |
| 1688 | with its items as a submenu beneath it. */ |
| 1689 | if (!keymaps && strcmp (pane_string, "")) |
| 1690 | { |
| 1691 | wv = xmalloc_widget_value (); |
| 1692 | if (save_wv) |
| 1693 | save_wv->next = wv; |
| 1694 | else |
| 1695 | first_wv->contents = wv; |
| 1696 | wv->name = (char *) pane_string; |
| 1697 | if (keymaps && !NILP (prefix)) |
| 1698 | wv->name++; |
| 1699 | wv->value = 0; |
| 1700 | wv->enabled = 1; |
| 1701 | wv->button_type = BUTTON_TYPE_NONE; |
| 1702 | wv->help = Qnil; |
| 1703 | save_wv = wv; |
| 1704 | prev_wv = 0; |
| 1705 | } |
| 1706 | else if (first_pane) |
| 1707 | { |
| 1708 | save_wv = wv; |
| 1709 | prev_wv = 0; |
| 1710 | } |
| 1711 | first_pane = 0; |
| 1712 | i += MENU_ITEMS_PANE_LENGTH; |
| 1713 | } |
| 1714 | else |
| 1715 | { |
| 1716 | /* Create a new item within current pane. */ |
| 1717 | Lisp_Object item_name, enable, descrip, def, type, selected, help; |
| 1718 | item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME); |
| 1719 | enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE); |
| 1720 | descrip = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY); |
| 1721 | def = AREF (menu_items, i + MENU_ITEMS_ITEM_DEFINITION); |
| 1722 | type = AREF (menu_items, i + MENU_ITEMS_ITEM_TYPE); |
| 1723 | selected = AREF (menu_items, i + MENU_ITEMS_ITEM_SELECTED); |
| 1724 | help = AREF (menu_items, i + MENU_ITEMS_ITEM_HELP); |
| 1725 | |
| 1726 | #ifndef HAVE_MULTILINGUAL_MENU |
| 1727 | if (STRINGP (item_name) && STRING_MULTIBYTE (item_name)) |
| 1728 | { |
| 1729 | item_name = ENCODE_MENU_STRING (item_name); |
| 1730 | ASET (menu_items, i + MENU_ITEMS_ITEM_NAME, item_name); |
| 1731 | } |
| 1732 | |
| 1733 | if (STRINGP (descrip) && STRING_MULTIBYTE (descrip)) |
| 1734 | { |
| 1735 | descrip = ENCODE_MENU_STRING (descrip); |
| 1736 | ASET (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY, descrip); |
| 1737 | } |
| 1738 | #endif /* not HAVE_MULTILINGUAL_MENU */ |
| 1739 | |
| 1740 | wv = xmalloc_widget_value (); |
| 1741 | if (prev_wv) |
| 1742 | prev_wv->next = wv; |
| 1743 | else |
| 1744 | save_wv->contents = wv; |
| 1745 | wv->name = SSDATA (item_name); |
| 1746 | if (!NILP (descrip)) |
| 1747 | wv->key = SSDATA (descrip); |
| 1748 | wv->value = 0; |
| 1749 | /* If this item has a null value, |
| 1750 | make the call_data null so that it won't display a box |
| 1751 | when the mouse is on it. */ |
| 1752 | wv->call_data = !NILP (def) ? aref_addr (menu_items, i) : 0; |
| 1753 | wv->enabled = !NILP (enable); |
| 1754 | |
| 1755 | if (NILP (type)) |
| 1756 | wv->button_type = BUTTON_TYPE_NONE; |
| 1757 | else if (EQ (type, QCtoggle)) |
| 1758 | wv->button_type = BUTTON_TYPE_TOGGLE; |
| 1759 | else if (EQ (type, QCradio)) |
| 1760 | wv->button_type = BUTTON_TYPE_RADIO; |
| 1761 | else |
| 1762 | emacs_abort (); |
| 1763 | |
| 1764 | wv->selected = !NILP (selected); |
| 1765 | |
| 1766 | if (! STRINGP (help)) |
| 1767 | help = Qnil; |
| 1768 | |
| 1769 | wv->help = help; |
| 1770 | |
| 1771 | prev_wv = wv; |
| 1772 | |
| 1773 | i += MENU_ITEMS_ITEM_LENGTH; |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | /* Deal with the title, if it is non-nil. */ |
| 1778 | if (!NILP (title)) |
| 1779 | { |
| 1780 | widget_value *wv_title = xmalloc_widget_value (); |
| 1781 | widget_value *wv_sep1 = xmalloc_widget_value (); |
| 1782 | widget_value *wv_sep2 = xmalloc_widget_value (); |
| 1783 | |
| 1784 | wv_sep2->name = "--"; |
| 1785 | wv_sep2->next = first_wv->contents; |
| 1786 | wv_sep2->help = Qnil; |
| 1787 | |
| 1788 | wv_sep1->name = "--"; |
| 1789 | wv_sep1->next = wv_sep2; |
| 1790 | wv_sep1->help = Qnil; |
| 1791 | |
| 1792 | #ifndef HAVE_MULTILINGUAL_MENU |
| 1793 | if (STRING_MULTIBYTE (title)) |
| 1794 | title = ENCODE_MENU_STRING (title); |
| 1795 | #endif |
| 1796 | |
| 1797 | wv_title->name = SSDATA (title); |
| 1798 | wv_title->enabled = TRUE; |
| 1799 | wv_title->button_type = BUTTON_TYPE_NONE; |
| 1800 | wv_title->help = Qnil; |
| 1801 | wv_title->next = wv_sep1; |
| 1802 | first_wv->contents = wv_title; |
| 1803 | } |
| 1804 | |
| 1805 | /* No selection has been chosen yet. */ |
| 1806 | menu_item_selection = 0; |
| 1807 | |
| 1808 | /* Make sure to free the widget_value objects we used to specify the |
| 1809 | contents even with longjmp. */ |
| 1810 | record_unwind_protect_ptr (cleanup_widget_value_tree, first_wv); |
| 1811 | |
| 1812 | /* Actually create and show the menu until popped down. */ |
| 1813 | create_and_show_popup_menu (f, first_wv, x, y, for_click, timestamp); |
| 1814 | |
| 1815 | unbind_to (specpdl_count, Qnil); |
| 1816 | |
| 1817 | /* Find the selected item, and its pane, to return |
| 1818 | the proper value. */ |
| 1819 | if (menu_item_selection != 0) |
| 1820 | { |
| 1821 | Lisp_Object prefix, entry; |
| 1822 | |
| 1823 | prefix = entry = Qnil; |
| 1824 | i = 0; |
| 1825 | while (i < menu_items_used) |
| 1826 | { |
| 1827 | if (EQ (AREF (menu_items, i), Qnil)) |
| 1828 | { |
| 1829 | subprefix_stack[submenu_depth++] = prefix; |
| 1830 | prefix = entry; |
| 1831 | i++; |
| 1832 | } |
| 1833 | else if (EQ (AREF (menu_items, i), Qlambda)) |
| 1834 | { |
| 1835 | prefix = subprefix_stack[--submenu_depth]; |
| 1836 | i++; |
| 1837 | } |
| 1838 | else if (EQ (AREF (menu_items, i), Qt)) |
| 1839 | { |
| 1840 | prefix |
| 1841 | = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 1842 | i += MENU_ITEMS_PANE_LENGTH; |
| 1843 | } |
| 1844 | /* Ignore a nil in the item list. |
| 1845 | It's meaningful only for dialog boxes. */ |
| 1846 | else if (EQ (AREF (menu_items, i), Qquote)) |
| 1847 | i += 1; |
| 1848 | else |
| 1849 | { |
| 1850 | entry |
| 1851 | = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE); |
| 1852 | if (menu_item_selection == aref_addr (menu_items, i)) |
| 1853 | { |
| 1854 | if (keymaps) |
| 1855 | { |
| 1856 | int j; |
| 1857 | |
| 1858 | entry = list1 (entry); |
| 1859 | if (!NILP (prefix)) |
| 1860 | entry = Fcons (prefix, entry); |
| 1861 | for (j = submenu_depth - 1; j >= 0; j--) |
| 1862 | if (!NILP (subprefix_stack[j])) |
| 1863 | entry = Fcons (subprefix_stack[j], entry); |
| 1864 | } |
| 1865 | return entry; |
| 1866 | } |
| 1867 | i += MENU_ITEMS_ITEM_LENGTH; |
| 1868 | } |
| 1869 | } |
| 1870 | } |
| 1871 | else if (!for_click) |
| 1872 | /* Make "Cancel" equivalent to C-g. */ |
| 1873 | Fsignal (Qquit, Qnil); |
| 1874 | |
| 1875 | return Qnil; |
| 1876 | } |
| 1877 | \f |
| 1878 | #ifdef USE_GTK |
| 1879 | static void |
| 1880 | dialog_selection_callback (GtkWidget *widget, gpointer client_data) |
| 1881 | { |
| 1882 | /* Treat the pointer as an integer. There's no problem |
| 1883 | as long as pointers have enough bits to hold small integers. */ |
| 1884 | if ((intptr_t) client_data != -1) |
| 1885 | menu_item_selection = (Lisp_Object *) client_data; |
| 1886 | |
| 1887 | popup_activated_flag = 0; |
| 1888 | } |
| 1889 | |
| 1890 | /* Pop up the dialog for frame F defined by FIRST_WV and loop until the |
| 1891 | dialog pops down. |
| 1892 | menu_item_selection will be set to the selection. */ |
| 1893 | static void |
| 1894 | create_and_show_dialog (struct frame *f, widget_value *first_wv) |
| 1895 | { |
| 1896 | GtkWidget *menu; |
| 1897 | |
| 1898 | eassert (FRAME_X_P (f)); |
| 1899 | |
| 1900 | menu = xg_create_widget ("dialog", first_wv->name, f, first_wv, |
| 1901 | G_CALLBACK (dialog_selection_callback), |
| 1902 | G_CALLBACK (popup_deactivate_callback), |
| 1903 | 0); |
| 1904 | |
| 1905 | if (menu) |
| 1906 | { |
| 1907 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 1908 | record_unwind_protect_ptr (pop_down_menu, menu); |
| 1909 | |
| 1910 | /* Display the menu. */ |
| 1911 | gtk_widget_show_all (menu); |
| 1912 | |
| 1913 | /* Process events that apply to the menu. */ |
| 1914 | popup_widget_loop (1, menu); |
| 1915 | |
| 1916 | unbind_to (specpdl_count, Qnil); |
| 1917 | } |
| 1918 | } |
| 1919 | |
| 1920 | #else /* not USE_GTK */ |
| 1921 | static void |
| 1922 | dialog_selection_callback (Widget widget, LWLIB_ID id, XtPointer client_data) |
| 1923 | { |
| 1924 | /* Treat the pointer as an integer. There's no problem |
| 1925 | as long as pointers have enough bits to hold small integers. */ |
| 1926 | if ((intptr_t) client_data != -1) |
| 1927 | menu_item_selection = (Lisp_Object *) client_data; |
| 1928 | |
| 1929 | block_input (); |
| 1930 | lw_destroy_all_widgets (id); |
| 1931 | unblock_input (); |
| 1932 | popup_activated_flag = 0; |
| 1933 | } |
| 1934 | |
| 1935 | |
| 1936 | /* Pop up the dialog for frame F defined by FIRST_WV and loop until the |
| 1937 | dialog pops down. |
| 1938 | menu_item_selection will be set to the selection. */ |
| 1939 | static void |
| 1940 | create_and_show_dialog (struct frame *f, widget_value *first_wv) |
| 1941 | { |
| 1942 | LWLIB_ID dialog_id; |
| 1943 | |
| 1944 | eassert (FRAME_X_P (f)); |
| 1945 | |
| 1946 | dialog_id = widget_id_tick++; |
| 1947 | #ifdef USE_LUCID |
| 1948 | apply_systemfont_to_dialog (f->output_data.x->widget); |
| 1949 | #endif |
| 1950 | lw_create_widget (first_wv->name, "dialog", dialog_id, first_wv, |
| 1951 | f->output_data.x->widget, 1, 0, |
| 1952 | dialog_selection_callback, 0, 0); |
| 1953 | lw_modify_all_widgets (dialog_id, first_wv->contents, True); |
| 1954 | /* Display the dialog box. */ |
| 1955 | lw_pop_up_all_widgets (dialog_id); |
| 1956 | popup_activated_flag = 1; |
| 1957 | x_activate_timeout_atimer (); |
| 1958 | |
| 1959 | /* Process events that apply to the dialog box. |
| 1960 | Also handle timers. */ |
| 1961 | { |
| 1962 | ptrdiff_t count = SPECPDL_INDEX (); |
| 1963 | int fact = 4 * sizeof (LWLIB_ID); |
| 1964 | |
| 1965 | /* xdialog_show_unwind is responsible for popping the dialog box down. */ |
| 1966 | record_unwind_protect (pop_down_menu, |
| 1967 | Fcons (make_number (dialog_id >> (fact)), |
| 1968 | make_number (dialog_id & ~(-1 << (fact))))); |
| 1969 | |
| 1970 | popup_get_selection ((XEvent *) 0, FRAME_X_DISPLAY_INFO (f), |
| 1971 | dialog_id, 1); |
| 1972 | |
| 1973 | unbind_to (count, Qnil); |
| 1974 | } |
| 1975 | } |
| 1976 | |
| 1977 | #endif /* not USE_GTK */ |
| 1978 | |
| 1979 | static const char * button_names [] = { |
| 1980 | "button1", "button2", "button3", "button4", "button5", |
| 1981 | "button6", "button7", "button8", "button9", "button10" }; |
| 1982 | |
| 1983 | static Lisp_Object |
| 1984 | xdialog_show (struct frame *f, |
| 1985 | bool keymaps, |
| 1986 | Lisp_Object title, |
| 1987 | Lisp_Object header, |
| 1988 | const char **error_name) |
| 1989 | { |
| 1990 | int i, nb_buttons=0; |
| 1991 | char dialog_name[6]; |
| 1992 | |
| 1993 | widget_value *wv, *first_wv = 0, *prev_wv = 0; |
| 1994 | |
| 1995 | /* Number of elements seen so far, before boundary. */ |
| 1996 | int left_count = 0; |
| 1997 | /* 1 means we've seen the boundary between left-hand elts and right-hand. */ |
| 1998 | int boundary_seen = 0; |
| 1999 | |
| 2000 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 2001 | |
| 2002 | eassert (FRAME_X_P (f)); |
| 2003 | |
| 2004 | *error_name = NULL; |
| 2005 | |
| 2006 | if (menu_items_n_panes > 1) |
| 2007 | { |
| 2008 | *error_name = "Multiple panes in dialog box"; |
| 2009 | return Qnil; |
| 2010 | } |
| 2011 | |
| 2012 | /* Create a tree of widget_value objects |
| 2013 | representing the text label and buttons. */ |
| 2014 | { |
| 2015 | Lisp_Object pane_name, prefix; |
| 2016 | const char *pane_string; |
| 2017 | pane_name = AREF (menu_items, MENU_ITEMS_PANE_NAME); |
| 2018 | prefix = AREF (menu_items, MENU_ITEMS_PANE_PREFIX); |
| 2019 | pane_string = (NILP (pane_name) |
| 2020 | ? "" : SSDATA (pane_name)); |
| 2021 | prev_wv = xmalloc_widget_value (); |
| 2022 | prev_wv->value = (char *) pane_string; |
| 2023 | if (keymaps && !NILP (prefix)) |
| 2024 | prev_wv->name++; |
| 2025 | prev_wv->enabled = 1; |
| 2026 | prev_wv->name = "message"; |
| 2027 | prev_wv->help = Qnil; |
| 2028 | first_wv = prev_wv; |
| 2029 | |
| 2030 | /* Loop over all panes and items, filling in the tree. */ |
| 2031 | i = MENU_ITEMS_PANE_LENGTH; |
| 2032 | while (i < menu_items_used) |
| 2033 | { |
| 2034 | |
| 2035 | /* Create a new item within current pane. */ |
| 2036 | Lisp_Object item_name, enable, descrip; |
| 2037 | item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME); |
| 2038 | enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE); |
| 2039 | descrip |
| 2040 | = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY); |
| 2041 | |
| 2042 | if (NILP (item_name)) |
| 2043 | { |
| 2044 | free_menubar_widget_value_tree (first_wv); |
| 2045 | *error_name = "Submenu in dialog items"; |
| 2046 | return Qnil; |
| 2047 | } |
| 2048 | if (EQ (item_name, Qquote)) |
| 2049 | { |
| 2050 | /* This is the boundary between left-side elts |
| 2051 | and right-side elts. Stop incrementing right_count. */ |
| 2052 | boundary_seen = 1; |
| 2053 | i++; |
| 2054 | continue; |
| 2055 | } |
| 2056 | if (nb_buttons >= 9) |
| 2057 | { |
| 2058 | free_menubar_widget_value_tree (first_wv); |
| 2059 | *error_name = "Too many dialog items"; |
| 2060 | return Qnil; |
| 2061 | } |
| 2062 | |
| 2063 | wv = xmalloc_widget_value (); |
| 2064 | prev_wv->next = wv; |
| 2065 | wv->name = (char *) button_names[nb_buttons]; |
| 2066 | if (!NILP (descrip)) |
| 2067 | wv->key = SSDATA (descrip); |
| 2068 | wv->value = SSDATA (item_name); |
| 2069 | wv->call_data = aref_addr (menu_items, i); |
| 2070 | wv->enabled = !NILP (enable); |
| 2071 | wv->help = Qnil; |
| 2072 | prev_wv = wv; |
| 2073 | |
| 2074 | if (! boundary_seen) |
| 2075 | left_count++; |
| 2076 | |
| 2077 | nb_buttons++; |
| 2078 | i += MENU_ITEMS_ITEM_LENGTH; |
| 2079 | } |
| 2080 | |
| 2081 | /* If the boundary was not specified, |
| 2082 | by default put half on the left and half on the right. */ |
| 2083 | if (! boundary_seen) |
| 2084 | left_count = nb_buttons - nb_buttons / 2; |
| 2085 | |
| 2086 | wv = xmalloc_widget_value (); |
| 2087 | wv->name = dialog_name; |
| 2088 | wv->help = Qnil; |
| 2089 | |
| 2090 | /* Frame title: 'Q' = Question, 'I' = Information. |
| 2091 | Can also have 'E' = Error if, one day, we want |
| 2092 | a popup for errors. */ |
| 2093 | if (NILP (header)) |
| 2094 | dialog_name[0] = 'Q'; |
| 2095 | else |
| 2096 | dialog_name[0] = 'I'; |
| 2097 | |
| 2098 | /* Dialog boxes use a really stupid name encoding |
| 2099 | which specifies how many buttons to use |
| 2100 | and how many buttons are on the right. */ |
| 2101 | dialog_name[1] = '0' + nb_buttons; |
| 2102 | dialog_name[2] = 'B'; |
| 2103 | dialog_name[3] = 'R'; |
| 2104 | /* Number of buttons to put on the right. */ |
| 2105 | dialog_name[4] = '0' + nb_buttons - left_count; |
| 2106 | dialog_name[5] = 0; |
| 2107 | wv->contents = first_wv; |
| 2108 | first_wv = wv; |
| 2109 | } |
| 2110 | |
| 2111 | /* No selection has been chosen yet. */ |
| 2112 | menu_item_selection = 0; |
| 2113 | |
| 2114 | /* Make sure to free the widget_value objects we used to specify the |
| 2115 | contents even with longjmp. */ |
| 2116 | record_unwind_protect_ptr (cleanup_widget_value_tree, first_wv); |
| 2117 | |
| 2118 | /* Actually create and show the dialog. */ |
| 2119 | create_and_show_dialog (f, first_wv); |
| 2120 | |
| 2121 | unbind_to (specpdl_count, Qnil); |
| 2122 | |
| 2123 | /* Find the selected item, and its pane, to return |
| 2124 | the proper value. */ |
| 2125 | if (menu_item_selection != 0) |
| 2126 | { |
| 2127 | Lisp_Object prefix; |
| 2128 | |
| 2129 | prefix = Qnil; |
| 2130 | i = 0; |
| 2131 | while (i < menu_items_used) |
| 2132 | { |
| 2133 | Lisp_Object entry; |
| 2134 | |
| 2135 | if (EQ (AREF (menu_items, i), Qt)) |
| 2136 | { |
| 2137 | prefix |
| 2138 | = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 2139 | i += MENU_ITEMS_PANE_LENGTH; |
| 2140 | } |
| 2141 | else if (EQ (AREF (menu_items, i), Qquote)) |
| 2142 | { |
| 2143 | /* This is the boundary between left-side elts and |
| 2144 | right-side elts. */ |
| 2145 | ++i; |
| 2146 | } |
| 2147 | else |
| 2148 | { |
| 2149 | entry |
| 2150 | = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE); |
| 2151 | if (menu_item_selection == aref_addr (menu_items, i)) |
| 2152 | { |
| 2153 | if (keymaps != 0) |
| 2154 | { |
| 2155 | entry = list1 (entry); |
| 2156 | if (!NILP (prefix)) |
| 2157 | entry = Fcons (prefix, entry); |
| 2158 | } |
| 2159 | return entry; |
| 2160 | } |
| 2161 | i += MENU_ITEMS_ITEM_LENGTH; |
| 2162 | } |
| 2163 | } |
| 2164 | } |
| 2165 | else |
| 2166 | /* Make "Cancel" equivalent to C-g. */ |
| 2167 | Fsignal (Qquit, Qnil); |
| 2168 | |
| 2169 | return Qnil; |
| 2170 | } |
| 2171 | |
| 2172 | #else /* not USE_X_TOOLKIT && not USE_GTK */ |
| 2173 | |
| 2174 | /* The frame of the last activated non-toolkit menu bar. |
| 2175 | Used to generate menu help events. */ |
| 2176 | |
| 2177 | static struct frame *menu_help_frame; |
| 2178 | |
| 2179 | |
| 2180 | /* Show help HELP_STRING, or clear help if HELP_STRING is null. |
| 2181 | |
| 2182 | PANE is the pane number, and ITEM is the menu item number in |
| 2183 | the menu (currently not used). |
| 2184 | |
| 2185 | This cannot be done with generating a HELP_EVENT because |
| 2186 | XMenuActivate contains a loop that doesn't let Emacs process |
| 2187 | keyboard events. */ |
| 2188 | |
| 2189 | static void |
| 2190 | menu_help_callback (char const *help_string, int pane, int item) |
| 2191 | { |
| 2192 | Lisp_Object *first_item; |
| 2193 | Lisp_Object pane_name; |
| 2194 | Lisp_Object menu_object; |
| 2195 | |
| 2196 | first_item = XVECTOR (menu_items)->contents; |
| 2197 | if (EQ (first_item[0], Qt)) |
| 2198 | pane_name = first_item[MENU_ITEMS_PANE_NAME]; |
| 2199 | else if (EQ (first_item[0], Qquote)) |
| 2200 | /* This shouldn't happen, see xmenu_show. */ |
| 2201 | pane_name = empty_unibyte_string; |
| 2202 | else |
| 2203 | pane_name = first_item[MENU_ITEMS_ITEM_NAME]; |
| 2204 | |
| 2205 | /* (menu-item MENU-NAME PANE-NUMBER) */ |
| 2206 | menu_object = list3 (Qmenu_item, pane_name, make_number (pane)); |
| 2207 | show_help_echo (help_string ? build_string (help_string) : Qnil, |
| 2208 | Qnil, menu_object, make_number (item)); |
| 2209 | } |
| 2210 | |
| 2211 | static void |
| 2212 | pop_down_menu (Lisp_Object arg) |
| 2213 | { |
| 2214 | struct frame *f = XSAVE_POINTER (arg, 0); |
| 2215 | XMenu *menu = XSAVE_POINTER (arg, 1); |
| 2216 | |
| 2217 | block_input (); |
| 2218 | #ifndef MSDOS |
| 2219 | XUngrabPointer (FRAME_X_DISPLAY (f), CurrentTime); |
| 2220 | XUngrabKeyboard (FRAME_X_DISPLAY (f), CurrentTime); |
| 2221 | #endif |
| 2222 | XMenuDestroy (FRAME_X_DISPLAY (f), menu); |
| 2223 | |
| 2224 | #ifdef HAVE_X_WINDOWS |
| 2225 | /* Assume the mouse has moved out of the X window. |
| 2226 | If it has actually moved in, we will get an EnterNotify. */ |
| 2227 | x_mouse_leave (FRAME_X_DISPLAY_INFO (f)); |
| 2228 | |
| 2229 | /* State that no mouse buttons are now held. |
| 2230 | (The oldXMenu code doesn't track this info for us.) |
| 2231 | That is not necessarily true, but the fiction leads to reasonable |
| 2232 | results, and it is a pain to ask which are actually held now. */ |
| 2233 | FRAME_X_DISPLAY_INFO (f)->grabbed = 0; |
| 2234 | |
| 2235 | #endif /* HAVE_X_WINDOWS */ |
| 2236 | |
| 2237 | unblock_input (); |
| 2238 | } |
| 2239 | |
| 2240 | |
| 2241 | Lisp_Object |
| 2242 | xmenu_show (struct frame *f, int x, int y, bool for_click, bool keymaps, |
| 2243 | Lisp_Object title, const char **error_name, Time timestamp) |
| 2244 | { |
| 2245 | Window root; |
| 2246 | XMenu *menu; |
| 2247 | int pane, selidx, lpane, status; |
| 2248 | Lisp_Object entry, pane_prefix; |
| 2249 | char *datap; |
| 2250 | int ulx, uly, width, height; |
| 2251 | int dispwidth, dispheight; |
| 2252 | int i, j, lines, maxlines; |
| 2253 | int maxwidth; |
| 2254 | int dummy_int; |
| 2255 | unsigned int dummy_uint; |
| 2256 | ptrdiff_t specpdl_count = SPECPDL_INDEX (); |
| 2257 | |
| 2258 | eassert (FRAME_X_P (f) || FRAME_MSDOS_P (f)); |
| 2259 | |
| 2260 | *error_name = 0; |
| 2261 | if (menu_items_n_panes == 0) |
| 2262 | return Qnil; |
| 2263 | |
| 2264 | if (menu_items_used <= MENU_ITEMS_PANE_LENGTH) |
| 2265 | { |
| 2266 | *error_name = "Empty menu"; |
| 2267 | return Qnil; |
| 2268 | } |
| 2269 | |
| 2270 | /* Figure out which root window F is on. */ |
| 2271 | XGetGeometry (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), &root, |
| 2272 | &dummy_int, &dummy_int, &dummy_uint, &dummy_uint, |
| 2273 | &dummy_uint, &dummy_uint); |
| 2274 | |
| 2275 | /* Make the menu on that window. */ |
| 2276 | menu = XMenuCreate (FRAME_X_DISPLAY (f), root, "emacs"); |
| 2277 | if (menu == NULL) |
| 2278 | { |
| 2279 | *error_name = "Can't create menu"; |
| 2280 | return Qnil; |
| 2281 | } |
| 2282 | |
| 2283 | /* Don't GC while we prepare and show the menu, |
| 2284 | because we give the oldxmenu library pointers to the |
| 2285 | contents of strings. */ |
| 2286 | inhibit_garbage_collection (); |
| 2287 | |
| 2288 | #ifdef HAVE_X_WINDOWS |
| 2289 | /* Adjust coordinates to relative to the outer (window manager) window. */ |
| 2290 | x += FRAME_OUTER_TO_INNER_DIFF_X (f); |
| 2291 | y += FRAME_OUTER_TO_INNER_DIFF_Y (f); |
| 2292 | #endif /* HAVE_X_WINDOWS */ |
| 2293 | |
| 2294 | /* Adjust coordinates to be root-window-relative. */ |
| 2295 | x += f->left_pos; |
| 2296 | y += f->top_pos; |
| 2297 | |
| 2298 | /* Create all the necessary panes and their items. */ |
| 2299 | maxwidth = maxlines = lines = i = 0; |
| 2300 | lpane = XM_FAILURE; |
| 2301 | while (i < menu_items_used) |
| 2302 | { |
| 2303 | if (EQ (AREF (menu_items, i), Qt)) |
| 2304 | { |
| 2305 | /* Create a new pane. */ |
| 2306 | Lisp_Object pane_name, prefix; |
| 2307 | const char *pane_string; |
| 2308 | |
| 2309 | maxlines = max (maxlines, lines); |
| 2310 | lines = 0; |
| 2311 | pane_name = AREF (menu_items, i + MENU_ITEMS_PANE_NAME); |
| 2312 | prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 2313 | pane_string = (NILP (pane_name) |
| 2314 | ? "" : SSDATA (pane_name)); |
| 2315 | if (keymaps && !NILP (prefix)) |
| 2316 | pane_string++; |
| 2317 | |
| 2318 | lpane = XMenuAddPane (FRAME_X_DISPLAY (f), menu, pane_string, TRUE); |
| 2319 | if (lpane == XM_FAILURE) |
| 2320 | { |
| 2321 | XMenuDestroy (FRAME_X_DISPLAY (f), menu); |
| 2322 | *error_name = "Can't create pane"; |
| 2323 | return Qnil; |
| 2324 | } |
| 2325 | i += MENU_ITEMS_PANE_LENGTH; |
| 2326 | |
| 2327 | /* Find the width of the widest item in this pane. */ |
| 2328 | j = i; |
| 2329 | while (j < menu_items_used) |
| 2330 | { |
| 2331 | Lisp_Object item; |
| 2332 | item = AREF (menu_items, j); |
| 2333 | if (EQ (item, Qt)) |
| 2334 | break; |
| 2335 | if (NILP (item)) |
| 2336 | { |
| 2337 | j++; |
| 2338 | continue; |
| 2339 | } |
| 2340 | width = SBYTES (item); |
| 2341 | if (width > maxwidth) |
| 2342 | maxwidth = width; |
| 2343 | |
| 2344 | j += MENU_ITEMS_ITEM_LENGTH; |
| 2345 | } |
| 2346 | } |
| 2347 | /* Ignore a nil in the item list. |
| 2348 | It's meaningful only for dialog boxes. */ |
| 2349 | else if (EQ (AREF (menu_items, i), Qquote)) |
| 2350 | i += 1; |
| 2351 | else |
| 2352 | { |
| 2353 | /* Create a new item within current pane. */ |
| 2354 | Lisp_Object item_name, enable, descrip, help; |
| 2355 | char *item_data; |
| 2356 | char const *help_string; |
| 2357 | |
| 2358 | item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME); |
| 2359 | enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE); |
| 2360 | descrip |
| 2361 | = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY); |
| 2362 | help = AREF (menu_items, i + MENU_ITEMS_ITEM_HELP); |
| 2363 | help_string = STRINGP (help) ? SSDATA (help) : NULL; |
| 2364 | |
| 2365 | if (!NILP (descrip)) |
| 2366 | { |
| 2367 | /* if alloca is fast, use that to make the space, |
| 2368 | to reduce gc needs. */ |
| 2369 | item_data = alloca (maxwidth + SBYTES (descrip) + 1); |
| 2370 | memcpy (item_data, SSDATA (item_name), SBYTES (item_name)); |
| 2371 | for (j = SCHARS (item_name); j < maxwidth; j++) |
| 2372 | item_data[j] = ' '; |
| 2373 | memcpy (item_data + j, SSDATA (descrip), SBYTES (descrip)); |
| 2374 | item_data[j + SBYTES (descrip)] = 0; |
| 2375 | } |
| 2376 | else |
| 2377 | item_data = SSDATA (item_name); |
| 2378 | |
| 2379 | if (lpane == XM_FAILURE |
| 2380 | || (XMenuAddSelection (FRAME_X_DISPLAY (f), |
| 2381 | menu, lpane, 0, item_data, |
| 2382 | !NILP (enable), help_string) |
| 2383 | == XM_FAILURE)) |
| 2384 | { |
| 2385 | XMenuDestroy (FRAME_X_DISPLAY (f), menu); |
| 2386 | *error_name = "Can't add selection to menu"; |
| 2387 | return Qnil; |
| 2388 | } |
| 2389 | i += MENU_ITEMS_ITEM_LENGTH; |
| 2390 | lines++; |
| 2391 | } |
| 2392 | } |
| 2393 | |
| 2394 | maxlines = max (maxlines, lines); |
| 2395 | |
| 2396 | /* All set and ready to fly. */ |
| 2397 | XMenuRecompute (FRAME_X_DISPLAY (f), menu); |
| 2398 | dispwidth = DisplayWidth (FRAME_X_DISPLAY (f), FRAME_X_SCREEN_NUMBER (f)); |
| 2399 | dispheight = DisplayHeight (FRAME_X_DISPLAY (f), FRAME_X_SCREEN_NUMBER (f)); |
| 2400 | x = min (x, dispwidth); |
| 2401 | y = min (y, dispheight); |
| 2402 | x = max (x, 1); |
| 2403 | y = max (y, 1); |
| 2404 | XMenuLocate (FRAME_X_DISPLAY (f), menu, 0, 0, x, y, |
| 2405 | &ulx, &uly, &width, &height); |
| 2406 | if (ulx+width > dispwidth) |
| 2407 | { |
| 2408 | x -= (ulx + width) - dispwidth; |
| 2409 | ulx = dispwidth - width; |
| 2410 | } |
| 2411 | if (uly+height > dispheight) |
| 2412 | { |
| 2413 | y -= (uly + height) - dispheight; |
| 2414 | uly = dispheight - height; |
| 2415 | } |
| 2416 | #ifndef HAVE_X_WINDOWS |
| 2417 | if (FRAME_HAS_MINIBUF_P (f) && uly+height > dispheight - 1) |
| 2418 | { |
| 2419 | /* Move the menu away of the echo area, to avoid overwriting the |
| 2420 | menu with help echo messages or vice versa. */ |
| 2421 | if (BUFFERP (echo_area_buffer[0]) && WINDOWP (echo_area_window)) |
| 2422 | { |
| 2423 | y -= WINDOW_TOTAL_LINES (XWINDOW (echo_area_window)); |
| 2424 | uly -= WINDOW_TOTAL_LINES (XWINDOW (echo_area_window)); |
| 2425 | } |
| 2426 | else |
| 2427 | { |
| 2428 | y--; |
| 2429 | uly--; |
| 2430 | } |
| 2431 | } |
| 2432 | #endif |
| 2433 | if (ulx < 0) x -= ulx; |
| 2434 | if (uly < 0) y -= uly; |
| 2435 | |
| 2436 | if (! for_click) |
| 2437 | { |
| 2438 | /* If position was not given by a mouse click, adjust so upper left |
| 2439 | corner of the menu as a whole ends up at given coordinates. This |
| 2440 | is what x-popup-menu says in its documentation. */ |
| 2441 | x += width/2; |
| 2442 | y += 1.5*height/(maxlines+2); |
| 2443 | } |
| 2444 | |
| 2445 | XMenuSetAEQ (menu, TRUE); |
| 2446 | XMenuSetFreeze (menu, TRUE); |
| 2447 | pane = selidx = 0; |
| 2448 | |
| 2449 | #ifndef MSDOS |
| 2450 | XMenuActivateSetWaitFunction (x_menu_wait_for_event, FRAME_X_DISPLAY (f)); |
| 2451 | #endif |
| 2452 | |
| 2453 | record_unwind_protect (pop_down_menu, make_save_ptr_ptr (f, menu)); |
| 2454 | |
| 2455 | /* Help display under X won't work because XMenuActivate contains |
| 2456 | a loop that doesn't give Emacs a chance to process it. */ |
| 2457 | menu_help_frame = f; |
| 2458 | status = XMenuActivate (FRAME_X_DISPLAY (f), menu, &pane, &selidx, |
| 2459 | x, y, ButtonReleaseMask, &datap, |
| 2460 | menu_help_callback); |
| 2461 | entry = pane_prefix = Qnil; |
| 2462 | |
| 2463 | switch (status) |
| 2464 | { |
| 2465 | case XM_SUCCESS: |
| 2466 | #ifdef XDEBUG |
| 2467 | fprintf (stderr, "pane= %d line = %d\n", panes, selidx); |
| 2468 | #endif |
| 2469 | |
| 2470 | /* Find the item number SELIDX in pane number PANE. */ |
| 2471 | i = 0; |
| 2472 | while (i < menu_items_used) |
| 2473 | { |
| 2474 | if (EQ (AREF (menu_items, i), Qt)) |
| 2475 | { |
| 2476 | if (pane == 0) |
| 2477 | pane_prefix |
| 2478 | = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX); |
| 2479 | pane--; |
| 2480 | i += MENU_ITEMS_PANE_LENGTH; |
| 2481 | } |
| 2482 | else |
| 2483 | { |
| 2484 | if (pane == -1) |
| 2485 | { |
| 2486 | if (selidx == 0) |
| 2487 | { |
| 2488 | entry |
| 2489 | = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE); |
| 2490 | if (keymaps) |
| 2491 | { |
| 2492 | entry = list1 (entry); |
| 2493 | if (!NILP (pane_prefix)) |
| 2494 | entry = Fcons (pane_prefix, entry); |
| 2495 | } |
| 2496 | break; |
| 2497 | } |
| 2498 | selidx--; |
| 2499 | } |
| 2500 | i += MENU_ITEMS_ITEM_LENGTH; |
| 2501 | } |
| 2502 | } |
| 2503 | break; |
| 2504 | |
| 2505 | case XM_FAILURE: |
| 2506 | *error_name = "Can't activate menu"; |
| 2507 | case XM_IA_SELECT: |
| 2508 | break; |
| 2509 | case XM_NO_SELECT: |
| 2510 | /* Make "Cancel" equivalent to C-g unless FOR_CLICK (which means |
| 2511 | the menu was invoked with a mouse event as POSITION). */ |
| 2512 | if (! for_click) |
| 2513 | Fsignal (Qquit, Qnil); |
| 2514 | break; |
| 2515 | } |
| 2516 | |
| 2517 | unbind_to (specpdl_count, Qnil); |
| 2518 | |
| 2519 | return entry; |
| 2520 | } |
| 2521 | |
| 2522 | #endif /* not USE_X_TOOLKIT */ |
| 2523 | |
| 2524 | #endif /* HAVE_MENUS */ |
| 2525 | |
| 2526 | #ifndef MSDOS |
| 2527 | /* Detect if a dialog or menu has been posted. MSDOS has its own |
| 2528 | implementation on msdos.c. */ |
| 2529 | |
| 2530 | int ATTRIBUTE_CONST |
| 2531 | popup_activated (void) |
| 2532 | { |
| 2533 | return popup_activated_flag; |
| 2534 | } |
| 2535 | #endif /* not MSDOS */ |
| 2536 | |
| 2537 | /* The following is used by delayed window autoselection. */ |
| 2538 | |
| 2539 | DEFUN ("menu-or-popup-active-p", Fmenu_or_popup_active_p, Smenu_or_popup_active_p, 0, 0, 0, |
| 2540 | doc: /* Return t if a menu or popup dialog is active. */) |
| 2541 | (void) |
| 2542 | { |
| 2543 | #ifdef HAVE_MENUS |
| 2544 | return (popup_activated ()) ? Qt : Qnil; |
| 2545 | #else |
| 2546 | return Qnil; |
| 2547 | #endif /* HAVE_MENUS */ |
| 2548 | } |
| 2549 | \f |
| 2550 | void |
| 2551 | syms_of_xmenu (void) |
| 2552 | { |
| 2553 | DEFSYM (Qdebug_on_next_call, "debug-on-next-call"); |
| 2554 | |
| 2555 | #ifdef USE_X_TOOLKIT |
| 2556 | widget_id_tick = (1<<16); |
| 2557 | next_menubar_widget_id = 1; |
| 2558 | #endif |
| 2559 | |
| 2560 | defsubr (&Smenu_or_popup_active_p); |
| 2561 | |
| 2562 | #if defined (USE_GTK) || defined (USE_X_TOOLKIT) |
| 2563 | defsubr (&Sx_menu_bar_open_internal); |
| 2564 | Ffset (intern_c_string ("accelerate-menu"), |
| 2565 | intern_c_string (Sx_menu_bar_open_internal.symbol_name)); |
| 2566 | #endif |
| 2567 | |
| 2568 | #ifdef HAVE_MENUS |
| 2569 | defsubr (&Sx_popup_dialog); |
| 2570 | #endif |
| 2571 | } |