frame.c 63.6 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Generic frame functions.
2
   Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation.
Jim Blandy's avatar
Jim Blandy committed
3 4 5 6 7

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Jim Blandy's avatar
Jim Blandy committed
8
the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
9 10 11 12 13 14 15 16 17
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
18 19
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */
Jim Blandy's avatar
Jim Blandy committed
20

21
#include <config.h>
22 23

#include <stdio.h>
24 25 26
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
27
#include "lisp.h"
Karl Heuer's avatar
Karl Heuer committed
28 29 30 31
#include "charset.h"
#ifdef HAVE_WINDOW_SYSTEM
#include "fontset.h"
#endif
32
#include "frame.h"
33
#include "termhooks.h"
34
#include "window.h"
Morten Welinder's avatar
Morten Welinder committed
35 36 37
#ifdef MSDOS
#include "msdos.h"
#endif
Jim Blandy's avatar
Jim Blandy committed
38

39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
/* Evaluate this expression to rebuild the section of syms_of_frame
   that initializes and staticpros the symbols declared below.  Note
   that Emacs 18 has a bug that keeps C-x C-e from being able to
   evaluate this expression.

(progn
  ;; Accumulate a list of the symbols we want to initialize from the
  ;; declarations at the top of the file.
  (goto-char (point-min))
  (search-forward "/\*&&& symbols declared here &&&*\/\n")
  (let (symbol-list)
    (while (looking-at "Lisp_Object \\(Q[a-z_]+\\)")
      (setq symbol-list
	    (cons (buffer-substring (match-beginning 1) (match-end 1))
		  symbol-list))
      (forward-line 1))
    (setq symbol-list (nreverse symbol-list))
    ;; Delete the section of syms_of_... where we initialize the symbols.
    (search-forward "\n  /\*&&& init symbols here &&&*\/\n")
    (let ((start (point)))
      (while (looking-at "^  Q")
	(forward-line 2))
      (kill-region start (point)))
    ;; Write a new symbol initialization section.
    (while symbol-list
      (insert (format "  %s = intern (\"" (car symbol-list)))
      (let ((start (point)))
	(insert (substring (car symbol-list) 1))
	(subst-char-in-region start (point) ?_ ?-))
      (insert (format "\");\n  staticpro (&%s);\n" (car symbol-list)))
      (setq symbol-list (cdr symbol-list)))))
  */        

/*&&& symbols declared here &&&*/
Lisp_Object Qframep;
Jim Blandy's avatar
Jim Blandy committed
74
Lisp_Object Qframe_live_p;
75 76
Lisp_Object Qheight;
Lisp_Object Qicon;
Jim Blandy's avatar
Jim Blandy committed
77
Lisp_Object Qminibuffer;
78 79 80 81
Lisp_Object Qmodeline;
Lisp_Object Qname;
Lisp_Object Qonly;
Lisp_Object Qunsplittable;
82
Lisp_Object Qmenu_bar_lines;
83 84
Lisp_Object Qwidth;
Lisp_Object Qx;
85
Lisp_Object Qw32;
86
Lisp_Object Qpc;
87
Lisp_Object Qvisible;
88
Lisp_Object Qbuffer_predicate;
89
Lisp_Object Qbuffer_list;
90
Lisp_Object Qtitle;
Jim Blandy's avatar
Jim Blandy committed
91

92
Lisp_Object Vterminal_frame;
93
Lisp_Object Vdefault_frame_alist;
94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122

static void
syms_of_frame_1 ()
{
  /*&&& init symbols here &&&*/
  Qframep = intern ("framep");
  staticpro (&Qframep);
  Qframe_live_p = intern ("frame-live-p");
  staticpro (&Qframe_live_p);
  Qheight = intern ("height");
  staticpro (&Qheight);
  Qicon = intern ("icon");
  staticpro (&Qicon);
  Qminibuffer = intern ("minibuffer");
  staticpro (&Qminibuffer);
  Qmodeline = intern ("modeline");
  staticpro (&Qmodeline);
  Qname = intern ("name");
  staticpro (&Qname);
  Qonly = intern ("only");
  staticpro (&Qonly);
  Qunsplittable = intern ("unsplittable");
  staticpro (&Qunsplittable);
  Qmenu_bar_lines = intern ("menu-bar-lines");
  staticpro (&Qmenu_bar_lines);
  Qwidth = intern ("width");
  staticpro (&Qwidth);
  Qx = intern ("x");
  staticpro (&Qx);
123 124
  Qw32 = intern ("w32");
  staticpro (&Qw32);
125 126
  Qpc = intern ("pc");
  staticpro (&Qpc);
127 128 129 130
  Qvisible = intern ("visible");
  staticpro (&Qvisible);
  Qbuffer_predicate = intern ("buffer-predicate");
  staticpro (&Qbuffer_predicate);
131 132
  Qbuffer_list = intern ("buffer-list");
  staticpro (&Qbuffer_list);
133 134
  Qtitle = intern ("title");
  staticpro (&Qtitle);
135

136 137 138 139 140 141 142 143 144 145 146 147
  DEFVAR_LISP ("default-frame-alist", &Vdefault_frame_alist,
    "Alist of default values for frame creation.\n\
These may be set in your init file, like this:\n\
  (setq default-frame-alist '((width . 80) (height . 55) (menu-bar-lines . 1))\n\
These override values given in window system configuration data,\n\
 including X Windows' defaults database.\n\
For values specific to the first Emacs frame, see `initial-frame-alist'.\n\
For values specific to the separate minibuffer frame, see\n\
 `minibuffer-frame-alist'.\n\
The `menu-bar-lines' element of the list controls whether new frames\n\
 have menu bars; `menu-bar-mode' works by altering this element.");
  Vdefault_frame_alist = Qnil;
148 149 150 151 152 153 154 155 156
}

static void
set_menu_bar_lines_1 (window, n)
  Lisp_Object window;
  int n;
{
  struct window *w = XWINDOW (window);

157
  XSETFASTINT (w->last_modified, 0);
158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
  XSETFASTINT (w->top, XFASTINT (w->top) + n);
  XSETFASTINT (w->height, XFASTINT (w->height) - n);

  /* Handle just the top child in a vertical split.  */
  if (!NILP (w->vchild))
    set_menu_bar_lines_1 (w->vchild, n);

  /* Adjust all children in a horizontal split.  */
  for (window = w->hchild; !NILP (window); window = w->next)
    {
      w = XWINDOW (window);
      set_menu_bar_lines_1 (window, n);
    }
}

173
void
174 175 176 177 178 179 180 181 182
set_menu_bar_lines (f, value, oldval)
     struct frame *f;
     Lisp_Object value, oldval;
{
  int nlines;
  int olines = FRAME_MENU_BAR_LINES (f);

  /* Right now, menu bars don't work properly in minibuf-only frames;
     most of the commands try to apply themselves to the minibuffer
Karl Heuer's avatar
Karl Heuer committed
183
     frame itself, and get an error because you can't switch buffers
184 185 186 187 188 189 190 191 192
     in or split the minibuffer window.  */
  if (FRAME_MINIBUF_ONLY_P (f))
    return;

  if (INTEGERP (value))
    nlines = XINT (value);
  else
    nlines = 0;

193 194 195 196 197 198 199
  if (nlines != olines)
    {
      windows_or_buffers_changed++;
      FRAME_WINDOW_SIZES_CHANGED (f) = 1;
      FRAME_MENU_BAR_LINES (f) = nlines;
      set_menu_bar_lines_1 (f->root_window, nlines - olines);
    }
200 201 202 203 204 205 206 207 208 209 210
}

#include "buffer.h"

/* These help us bind and responding to switch-frame events.  */
#include "commands.h"
#include "keyboard.h"

Lisp_Object Vemacs_iconified;
Lisp_Object Vframe_list;

Jim Blandy's avatar
Jim Blandy committed
211 212
extern Lisp_Object Vminibuffer_list;
extern Lisp_Object get_minibuffer ();
213 214
extern Lisp_Object Fhandle_switch_frame ();
extern Lisp_Object Fredirect_frame_focus ();
Karl Heuer's avatar
Karl Heuer committed
215
extern Lisp_Object x_get_focus_frame ();
Jim Blandy's avatar
Jim Blandy committed
216

Jim Blandy's avatar
Jim Blandy committed
217 218 219
DEFUN ("framep", Fframep, Sframep, 1, 1, 0,
  "Return non-nil if OBJECT is a frame.\n\
Value is t for a termcap frame (a character-only terminal),\n\
Morten Welinder's avatar
Morten Welinder committed
220 221
`x' for an Emacs frame that is really an X window,\n\
`pc' for a direct-write MS-DOS frame.\n\
Richard M. Stallman's avatar
Richard M. Stallman committed
222
See also `frame-live-p'.")
Jim Blandy's avatar
Jim Blandy committed
223 224
  (object)
     Lisp_Object object;
Jim Blandy's avatar
Jim Blandy committed
225
{
226
  if (!FRAMEP (object))
Jim Blandy's avatar
Jim Blandy committed
227
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
228
  switch (XFRAME (object)->output_method)
Jim Blandy's avatar
Jim Blandy committed
229 230 231 232
    {
    case output_termcap:
      return Qt;
    case output_x_window:
233
      return Qx;
234 235
    case output_w32:
      return Qw32;
236 237
    case output_msdos_raw:
      return Qpc;
Jim Blandy's avatar
Jim Blandy committed
238 239 240 241 242
    default:
      abort ();
    }
}

Jim Blandy's avatar
Jim Blandy committed
243
DEFUN ("frame-live-p", Fframe_live_p, Sframe_live_p, 1, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
244 245 246 247 248
  "Return non-nil if OBJECT is a frame which has not been deleted.\n\
Value is nil if OBJECT is not a live frame.  If object is a live\n\
frame, the return value indicates what sort of output device it is\n\
displayed on.  Value is t for a termcap frame (a character-only\n\
terminal), `x' for an Emacs frame being displayed in an X window.")
Jim Blandy's avatar
Jim Blandy committed
249 250 251
  (object)
     Lisp_Object object;
{
Jim Blandy's avatar
Jim Blandy committed
252 253 254
  return ((FRAMEP (object)
	   && FRAME_LIVE_P (XFRAME (object)))
	  ? Fframep (object)
Jim Blandy's avatar
Jim Blandy committed
255 256 257
	  : Qnil);
}

Jim Blandy's avatar
Jim Blandy committed
258 259
struct frame *
make_frame (mini_p)
Jim Blandy's avatar
Jim Blandy committed
260 261
     int mini_p;
{
Jim Blandy's avatar
Jim Blandy committed
262 263
  Lisp_Object frame;
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
264 265
  register Lisp_Object root_window;
  register Lisp_Object mini_window;
266 267 268 269 270 271 272 273 274
  register struct Lisp_Vector *vec;
  int i;

  vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct frame));
  for (i = 0; i < VECSIZE (struct frame); i++)
    XSETFASTINT (vec->contents[i], 0);
  vec->size = VECSIZE (struct frame);
  f = (struct frame *)vec;
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
275 276 277 278 279 280

  f->cursor_x = 0;
  f->cursor_y = 0;
  f->current_glyphs = 0;
  f->desired_glyphs = 0;
  f->visible = 0;
281
  f->async_visible = 0;
282
  f->output_data.nothing = 0;
Jim Blandy's avatar
Jim Blandy committed
283
  f->iconified = 0;
284
  f->async_iconified = 0;
Jim Blandy's avatar
Jim Blandy committed
285 286 287 288 289 290
  f->wants_modeline = 1;
  f->auto_raise = 0;
  f->auto_lower = 0;
  f->no_split = 0;
  f->garbaged = 0;
  f->has_minibuffer = mini_p;
291
  f->focus_frame = Qnil;
292
  f->explicit_name = 0;
293
  f->can_have_scroll_bars = 0;
294
  f->vertical_scroll_bar_type = vertical_scroll_bar_none;
Jim Blandy's avatar
Jim Blandy committed
295
  f->param_alist = Qnil;
296 297
  f->scroll_bars = Qnil;
  f->condemned_scroll_bars = Qnil;
298
  f->face_alist = Qnil;
299
  f->menu_bar_items = Qnil;
300 301
  f->menu_bar_vector = Qnil;
  f->menu_bar_items_used = 0;
302
  f->buffer_predicate = Qnil;
303
  f->buffer_list = Qnil;
304 305 306
#ifdef MULTI_KBOARD
  f->kboard = initial_kboard;
#endif
307
  f->namebuf = 0;
308
  f->title = Qnil;
Jim Blandy's avatar
Jim Blandy committed
309

310
  root_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
311 312
  if (mini_p)
    {
313
      mini_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
314 315 316
      XWINDOW (root_window)->next = mini_window;
      XWINDOW (mini_window)->prev = root_window;
      XWINDOW (mini_window)->mini_p = Qt;
Jim Blandy's avatar
Jim Blandy committed
317 318
      XWINDOW (mini_window)->frame = frame;
      f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
319 320 321 322 323
    }
  else
    {
      mini_window = Qnil;
      XWINDOW (root_window)->next = Qnil;
Jim Blandy's avatar
Jim Blandy committed
324
      f->minibuffer_window = Qnil;
Jim Blandy's avatar
Jim Blandy committed
325 326
    }

Jim Blandy's avatar
Jim Blandy committed
327
  XWINDOW (root_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
328 329 330

  /* 10 is arbitrary,
     just so that there is "something there."
Jim Blandy's avatar
Jim Blandy committed
331
     Correct size will be set up later with change_frame_size.  */
Jim Blandy's avatar
Jim Blandy committed
332

333
  SET_FRAME_WIDTH (f, 10);
Jim Blandy's avatar
Jim Blandy committed
334
  f->height = 10;
Jim Blandy's avatar
Jim Blandy committed
335

336 337
  XSETFASTINT (XWINDOW (root_window)->width, 10);
  XSETFASTINT (XWINDOW (root_window)->height, (mini_p ? 9 : 10));
Jim Blandy's avatar
Jim Blandy committed
338 339 340

  if (mini_p)
    {
341 342 343
      XSETFASTINT (XWINDOW (mini_window)->width, 10);
      XSETFASTINT (XWINDOW (mini_window)->top, 9);
      XSETFASTINT (XWINDOW (mini_window)->height, 1);
Jim Blandy's avatar
Jim Blandy committed
344 345
    }

Jim Blandy's avatar
Jim Blandy committed
346
  /* Choose a buffer for the frame's root window.  */
Jim Blandy's avatar
Jim Blandy committed
347 348 349 350 351 352 353 354
  {
    Lisp_Object buf;

    XWINDOW (root_window)->buffer = Qt;
    buf = Fcurrent_buffer ();
    /* If buf is a 'hidden' buffer (i.e. one whose name starts with
       a space), try to find another one.  */
    if (XSTRING (Fbuffer_name (buf))->data[0] == ' ')
355
      buf = Fother_buffer (buf, Qnil);
Jim Blandy's avatar
Jim Blandy committed
356
    Fset_window_buffer (root_window, buf);
357 358

    f->buffer_list = Fcons (buf, Qnil);
Jim Blandy's avatar
Jim Blandy committed
359 360
  }

Jim Blandy's avatar
Jim Blandy committed
361 362 363 364
  if (mini_p)
    {
      XWINDOW (mini_window)->buffer = Qt;
      Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
365
			  (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
366 367 368 369
			   ? get_minibuffer (0)
			   : Fcar (Vminibuffer_list)));
    }

Jim Blandy's avatar
Jim Blandy committed
370 371
  f->root_window = root_window;
  f->selected_window = root_window;
Jim Blandy's avatar
Jim Blandy committed
372 373
  /* Make sure this window seems more recently used than
     a newly-created, never-selected window.  */
374
  XSETFASTINT (XWINDOW (f->selected_window)->use_time, ++window_select_count);
Jim Blandy's avatar
Jim Blandy committed
375

Karl Heuer's avatar
Karl Heuer committed
376 377 378 379
#ifdef HAVE_WINDOW_SYSTEM
  f->fontset_data = alloc_fontset_data ();
#endif

Jim Blandy's avatar
Jim Blandy committed
380
  return f;
Jim Blandy's avatar
Jim Blandy committed
381 382
}

383
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
384
/* Make a frame using a separate minibuffer window on another frame.
Jim Blandy's avatar
Jim Blandy committed
385 386 387
   MINI_WINDOW is the minibuffer window to use.  nil means use the
   default (the global minibuffer).  */

Jim Blandy's avatar
Jim Blandy committed
388
struct frame *
389
make_frame_without_minibuffer (mini_window, kb, display)
Jim Blandy's avatar
Jim Blandy committed
390
     register Lisp_Object mini_window;
391
     KBOARD *kb;
392
     Lisp_Object display;
Jim Blandy's avatar
Jim Blandy committed
393
{
Jim Blandy's avatar
Jim Blandy committed
394
  register struct frame *f;
395
  struct gcpro gcpro1;
Jim Blandy's avatar
Jim Blandy committed
396

397 398
  if (!NILP (mini_window))
    CHECK_LIVE_WINDOW (mini_window, 0);
Jim Blandy's avatar
Jim Blandy committed
399

400
#ifdef MULTI_KBOARD
401 402
  if (!NILP (mini_window)
      && XFRAME (XWINDOW (mini_window)->frame)->kboard != kb)
403 404 405
    error ("frame and minibuffer must be on the same display");
#endif

Jim Blandy's avatar
Jim Blandy committed
406 407
  /* Make a frame containing just a root window.  */
  f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
408

409 410 411 412 413 414
  if (NILP (mini_window))
    {
      /* Use default-minibuffer-frame if possible.  */
      if (!FRAMEP (kb->Vdefault_minibuffer_frame)
	  || ! FRAME_LIVE_P (XFRAME (kb->Vdefault_minibuffer_frame)))
	{
415 416 417 418
          Lisp_Object frame_dummy;

          XSETFRAME (frame_dummy, f);
          GCPRO1 (frame_dummy);
419
	  /* If there's no minibuffer frame to use, create one.  */
420 421 422
	  kb->Vdefault_minibuffer_frame =
	    call1 (intern ("make-initial-minibuffer-frame"), display);
          UNGCPRO;
423
	}
424
   
425 426
      mini_window = XFRAME (kb->Vdefault_minibuffer_frame)->minibuffer_window;
    }
427

Jim Blandy's avatar
Jim Blandy committed
428
  f->minibuffer_window = mini_window;
429 430 431 432 433 434 435 436

  /* Make the chosen minibuffer window display the proper minibuffer,
     unless it is already showing a minibuffer.  */
  if (NILP (Fmemq (XWINDOW (mini_window)->buffer, Vminibuffer_list)))
    Fset_window_buffer (mini_window,
			(NILP (Vminibuffer_list)
			 ? get_minibuffer (0)
			 : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
437
  return f;
Jim Blandy's avatar
Jim Blandy committed
438 439
}

Jim Blandy's avatar
Jim Blandy committed
440
/* Make a frame containing only a minibuffer window.  */
Jim Blandy's avatar
Jim Blandy committed
441

Jim Blandy's avatar
Jim Blandy committed
442 443
struct frame *
make_minibuffer_frame ()
Jim Blandy's avatar
Jim Blandy committed
444
{
Jim Blandy's avatar
Jim Blandy committed
445
  /* First make a frame containing just a root window, no minibuffer.  */
Jim Blandy's avatar
Jim Blandy committed
446

Jim Blandy's avatar
Jim Blandy committed
447
  register struct frame *f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
448
  register Lisp_Object mini_window;
Jim Blandy's avatar
Jim Blandy committed
449
  register Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
450

451
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
452

453
  f->auto_raise = 0;
Jim Blandy's avatar
Jim Blandy committed
454 455 456 457
  f->auto_lower = 0;
  f->no_split = 1;
  f->wants_modeline = 0;
  f->has_minibuffer = 1;
Jim Blandy's avatar
Jim Blandy committed
458 459 460 461 462

  /* Now label the root window as also being the minibuffer.
     Avoid infinite looping on the window chain by marking next pointer
     as nil. */

Jim Blandy's avatar
Jim Blandy committed
463
  mini_window = f->minibuffer_window = f->root_window;
Jim Blandy's avatar
Jim Blandy committed
464 465
  XWINDOW (mini_window)->mini_p = Qt;
  XWINDOW (mini_window)->next = Qnil;
466
  XWINDOW (mini_window)->prev = Qnil;
Jim Blandy's avatar
Jim Blandy committed
467
  XWINDOW (mini_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
468 469 470 471

  /* Put the proper buffer in that window.  */

  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
472
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
473 474
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
475
  return f;
Jim Blandy's avatar
Jim Blandy committed
476
}
477
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
478

Jim Blandy's avatar
Jim Blandy committed
479
/* Construct a frame that refers to the terminal (stdin and stdout).  */
Jim Blandy's avatar
Jim Blandy committed
480

481 482
static int terminal_frame_count;

Jim Blandy's avatar
Jim Blandy committed
483 484
struct frame *
make_terminal_frame ()
Jim Blandy's avatar
Jim Blandy committed
485
{
Jim Blandy's avatar
Jim Blandy committed
486
  register struct frame *f;
487
  Lisp_Object frame;
488 489
  char name[20];

490 491 492 493 494
#ifdef MULTI_KBOARD
  if (!initial_kboard)
    {
      initial_kboard = (KBOARD *) xmalloc (sizeof (KBOARD));
      init_kboard (initial_kboard);
495 496
      initial_kboard->next_kboard = all_kboards;
      all_kboards = initial_kboard;
497 498 499
    }
#endif

500 501 502
  /* The first call must initialize Vframe_list.  */
  if (! (NILP (Vframe_list) || CONSP (Vframe_list)))
    Vframe_list = Qnil;
Jim Blandy's avatar
Jim Blandy committed
503 504

  f = make_frame (1);
505

506
  XSETFRAME (frame, f);
507 508
  Vframe_list = Fcons (frame, Vframe_list);

509
  terminal_frame_count++;
510 511
  sprintf (name, "F%d", terminal_frame_count);
  f->name = build_string (name);
512 513 514

  f->visible = 1;		/* FRAME_SET_VISIBLE wd set frame_garbaged. */
  f->async_visible = 1;		/* Don't let visible be cleared later. */
515 516 517 518 519
#ifdef MSDOS
  f->output_data.x = &the_only_x_display;
  f->output_method = output_msdos_raw;
  init_frame_faces (f);
#else /* not MSDOS */
520
  f->output_data.nothing = 1;	/* Nonzero means frame isn't deleted.  */
521
#endif
Jim Blandy's avatar
Jim Blandy committed
522
  return f;
Jim Blandy's avatar
Jim Blandy committed
523
}
524 525

DEFUN ("make-terminal-frame", Fmake_terminal_frame, Smake_terminal_frame,
526 527 528 529 530 531
       1, 1, 0, "Create an additional terminal frame.\n\
You can create multiple frames on a text-only terminal in this way.\n\
Only the selected terminal frame is actually displayed.\n\
This function takes one argument, an alist specifying frame parameters.\n\
In practice, generally you don't need to specify any parameters.\n\
Note that changing the size of one terminal frame automatically affects all.")
532 533 534 535 536 537
  (parms)
     Lisp_Object parms;
{
  struct frame *f;
  Lisp_Object frame;

538
#ifdef MSDOS
539 540 541
  if (selected_frame->output_method != output_msdos_raw)
    abort ();
#else
542 543
  if (selected_frame->output_method != output_termcap)
    error ("Not using an ASCII terminal now; cannot make a new ASCII frame");
544
#endif
545 546 547 548 549 550 551

  f = make_terminal_frame ();
  change_frame_size (f, FRAME_HEIGHT (selected_frame),
		     FRAME_WIDTH (selected_frame), 0, 0);
  remake_frame_glyphs (f);
  calculate_costs (f);
  XSETFRAME (frame, f);
552
  Fmodify_frame_parameters (frame, Vdefault_frame_alist);
553
  Fmodify_frame_parameters (frame, parms);
554
  f->face_alist = selected_frame->face_alist;
555 556
  return frame;
}
Jim Blandy's avatar
Jim Blandy committed
557

558
Lisp_Object
559
do_switch_frame (frame, no_enter, track)
Jim Blandy's avatar
Jim Blandy committed
560
     Lisp_Object frame, no_enter;
561
     int track;
Jim Blandy's avatar
Jim Blandy committed
562
{
563 564 565 566 567 568 569
  /* If FRAME is a switch-frame event, extract the frame we should
     switch to.  */
  if (CONSP (frame)
      && EQ (XCONS (frame)->car, Qswitch_frame)
      && CONSP (XCONS (frame)->cdr))
    frame = XCONS (XCONS (frame)->cdr)->car;

570 571 572 573 574 575
  /* This used to say CHECK_LIVE_FRAME, but apparently it's possible for
     a switch-frame event to arrive after a frame is no longer live,
     especially when deleting the initial frame during startup.  */
  CHECK_FRAME (frame, 0);
  if (! FRAME_LIVE_P (XFRAME (frame)))
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
576

Jim Blandy's avatar
Jim Blandy committed
577 578
  if (selected_frame == XFRAME (frame))
    return frame;
Jim Blandy's avatar
Jim Blandy committed
579

580 581 582
  /* This is too greedy; it causes inappropriate focus redirection
     that's hard to get rid of.  */
#if 0
583 584 585 586 587 588 589
  /* If a frame's focus has been redirected toward the currently
     selected frame, we should change the redirection to point to the
     newly selected frame.  This means that if the focus is redirected
     from a minibufferless frame to a surrogate minibuffer frame, we
     can use `other-window' to switch between all the frames using
     that minibuffer frame, and the focus redirection will follow us
     around.  */
590 591 592
  if (track)
    {
      Lisp_Object tail;
593

594 595 596
      for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
	{
	  Lisp_Object focus;
597

598
	  if (!FRAMEP (XCONS (tail)->car))
599
	    abort ();
600

601
	  focus = FRAME_FOCUS_FRAME (XFRAME (XCONS (tail)->car));
602

603
	  if (FRAMEP (focus) && XFRAME (focus) == selected_frame)
604 605 606 607 608
	    Fredirect_frame_focus (XCONS (tail)->car, frame);
	}
    }
#else /* ! 0 */
  /* Instead, apply it only to the frame we're pointing to.  */
609 610
#ifdef HAVE_WINDOW_SYSTEM
  if (track && (FRAME_WINDOW_P (XFRAME (frame))))
611 612 613
    {
      Lisp_Object focus, xfocus;

614
      xfocus = x_get_focus_frame (XFRAME (frame));
615 616 617 618 619 620 621 622 623
      if (FRAMEP (xfocus))
	{
	  focus = FRAME_FOCUS_FRAME (XFRAME (xfocus));
	  if (FRAMEP (focus) && XFRAME (focus) == selected_frame)
	    Fredirect_frame_focus (xfocus, frame);
	}
    }
#endif /* HAVE_X_WINDOWS */
#endif /* ! 0 */
624

Jim Blandy's avatar
Jim Blandy committed
625 626 627
  selected_frame = XFRAME (frame);
  if (! FRAME_MINIBUF_ONLY_P (selected_frame))
    last_nonminibuf_frame = selected_frame;
Jim Blandy's avatar
Jim Blandy committed
628

Jim Blandy's avatar
Jim Blandy committed
629
  Fselect_window (XFRAME (frame)->selected_window);
Jim Blandy's avatar
Jim Blandy committed
630

631
  /* We want to make sure that the next event generates a frame-switch
632
     event to the appropriate frame.  This seems kludgy to me, but
633 634 635 636
     before you take it out, make sure that evaluating something like
     (select-window (frame-root-window (new-frame))) doesn't end up
     with your typing being interpreted in the new frame instead of
     the one you're actually typing in.  */
637
  internal_last_event_frame = Qnil;
638

Jim Blandy's avatar
Jim Blandy committed
639
  return frame;
Jim Blandy's avatar
Jim Blandy committed
640 641
}

642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663
DEFUN ("select-frame", Fselect_frame, Sselect_frame, 1, 2, "e",
  "Select the frame FRAME.\n\
Subsequent editing commands apply to its selected window.\n\
The selection of FRAME lasts until the next time the user does\n\
something to select a different frame, or until the next time this\n\
function is called.")
  (frame, no_enter)
    Lisp_Object frame, no_enter;
{
  return do_switch_frame (frame, no_enter, 1);
}


DEFUN ("handle-switch-frame", Fhandle_switch_frame, Shandle_switch_frame, 1, 2, "e",
  "Handle a switch-frame event EVENT.\n\
Switch-frame events are usually bound to this function.\n\
A switch-frame event tells Emacs that the window manager has requested\n\
that the user's events be directed to the frame mentioned in the event.\n\
This function selects the selected window of the frame of EVENT.\n\
\n\
If EVENT is frame object, handle it as if it were a switch-frame event\n\
to that frame.")
664 665
  (event, no_enter)
     Lisp_Object event, no_enter;
666
{
667 668
  /* Preserve prefix arg that the command loop just cleared.  */
  current_kboard->Vprefix_arg = Vcurrent_prefix_arg;
669
  call1 (Vrun_hooks, Qmouse_leave_buffer_hook);
670
  return do_switch_frame (event, no_enter, 0);
671 672
}

673 674 675 676 677 678 679 680
DEFUN ("ignore-event", Fignore_event, Signore_event, 0, 0, "",
  "Do nothing, but preserve any prefix argument already specified.\n\
This is a suitable binding for iconify-frame and make-frame-visible.")
     ()
{
  current_kboard->Vprefix_arg = Vcurrent_prefix_arg;
  return Qnil;
}
681

Jim Blandy's avatar
Jim Blandy committed
682 683
DEFUN ("selected-frame", Fselected_frame, Sselected_frame, 0, 0, 0,
  "Return the frame that is now selected.")
Jim Blandy's avatar
Jim Blandy committed
684 685 686
  ()
{
  Lisp_Object tem;
687
  XSETFRAME (tem, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
688 689
  return tem;
}
690

Jim Blandy's avatar
Jim Blandy committed
691 692
DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0,
  "Return the frame object that window WINDOW is on.")
Jim Blandy's avatar
Jim Blandy committed
693 694 695
  (window)
     Lisp_Object window;
{
696
  CHECK_LIVE_WINDOW (window, 0);
Jim Blandy's avatar
Jim Blandy committed
697
  return XWINDOW (window)->frame;
Jim Blandy's avatar
Jim Blandy committed
698 699
}

700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726
DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0,
  "Returns the topmost, leftmost window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
  (frame)
     Lisp_Object frame;
{
  Lisp_Object w;

  if (NILP (frame))
    w = selected_frame->root_window;
  else
    {
      CHECK_LIVE_FRAME (frame, 0);
      w = XFRAME (frame)->root_window;
    }
  while (NILP (XWINDOW (w)->buffer))
    {
      if (! NILP (XWINDOW (w)->hchild))
	w = XWINDOW (w)->hchild;
      else if (! NILP (XWINDOW (w)->vchild))
	w = XWINDOW (w)->vchild;
      else
	abort ();
    }
  return w;
}

727 728 729 730 731 732 733 734
DEFUN ("active-minibuffer-window", Factive_minibuffer_window,
       Sactive_minibuffer_window, 0, 0, 0,
       "Return the currently active minibuffer window, or nil if none.")
  ()
{
  return minibuf_level ? minibuf_window : Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
735
DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0,
736 737
       "Returns the root-window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
738 739
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
740
{
Jim Blandy's avatar
Jim Blandy committed
741
  if (NILP (frame))
742
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
743
  else
Jim Blandy's avatar
Jim Blandy committed
744
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
745

Jim Blandy's avatar
Jim Blandy committed
746
  return XFRAME (frame)->root_window;
Jim Blandy's avatar
Jim Blandy committed
747 748
}

Jim Blandy's avatar
Jim Blandy committed
749 750
DEFUN ("frame-selected-window", Fframe_selected_window,
       Sframe_selected_window, 0, 1, 0,
751 752
  "Return the selected window of frame object FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
753 754
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
755
{
Jim Blandy's avatar
Jim Blandy committed
756
  if (NILP (frame))
757
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
758
  else
Jim Blandy's avatar
Jim Blandy committed
759
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
760

Jim Blandy's avatar
Jim Blandy committed
761
  return XFRAME (frame)->selected_window;
Jim Blandy's avatar
Jim Blandy committed
762 763
}

764 765 766 767 768 769 770 771 772
DEFUN ("set-frame-selected-window", Fset_frame_selected_window,
       Sset_frame_selected_window, 2, 2, 0,
  "Set the selected window of frame object FRAME to WINDOW.\n\
If FRAME is nil, the selected frame is used.\n\
If FRAME is the selected frame, this makes WINDOW the selected window.")
  (frame, window)
     Lisp_Object frame, window;
{
  if (NILP (frame))
773
    XSETFRAME (frame, selected_frame);
774 775 776 777 778 779 780 781 782 783 784 785 786 787
  else
    CHECK_LIVE_FRAME (frame, 0);

  CHECK_LIVE_WINDOW (window, 1);

  if (! EQ (frame, WINDOW_FRAME (XWINDOW (window))))
    error ("In `set-frame-selected-window', WINDOW is not on FRAME");

  if (XFRAME (frame) == selected_frame)
    return Fselect_window (window);

  return XFRAME (frame)->selected_window = window;
}

Jim Blandy's avatar
Jim Blandy committed
788
DEFUN ("frame-list", Fframe_list, Sframe_list,
Jim Blandy's avatar
Jim Blandy committed
789
       0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
790
       "Return a list of all frames.")
Jim Blandy's avatar
Jim Blandy committed
791 792
  ()
{
Jim Blandy's avatar
Jim Blandy committed
793
  return Fcopy_sequence (Vframe_list);
Jim Blandy's avatar
Jim Blandy committed
794 795
}

Jim Blandy's avatar
Jim Blandy committed
796 797
/* Return the next frame in the frame list after FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
798 799
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
800
   If MINIBUF is `visible', include all visible frames.
801
   If MINIBUF is 0, include all visible and iconified frames.
802 803
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
804
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
805 806
next_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
807
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
808 809 810 811
{
  Lisp_Object tail;
  int passed = 0;

Jim Blandy's avatar
Jim Blandy committed
812 813
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
814 815
    abort ();

Jim Blandy's avatar
Jim Blandy committed
816 817 818 819
  /* If this frame is dead, it won't be in Vframe_list, and we'll loop
     forever.  Forestall that.  */
  CHECK_LIVE_FRAME (frame, 0);

Jim Blandy's avatar
Jim Blandy committed
820
  while (1)
Jim Blandy's avatar
Jim Blandy committed
821
    for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
822
      {
823
	Lisp_Object f;
824

825
	f = XCONS (tail)->car;
826 827 828

	if (passed
	    && FRAME_KBOARD (XFRAME (f)) == FRAME_KBOARD (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
829
	  {
830 831 832 833 834 835 836 837 838 839 840 841 842
	    /* Decide whether this frame is eligible to be returned.  */

	    /* If we've looped all the way around without finding any
	       eligible frames, return the original frame.  */
	    if (EQ (f, frame))
	      return f;

	    /* Let minibuf decide if this frame is acceptable.  */
	    if (NILP (minibuf))
	      {
		if (! FRAME_MINIBUF_ONLY_P (XFRAME (f)))
		  return f;
	      }
843 844 845 846 847 848
	    else if (EQ (minibuf, Qvisible))
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f)))
		  return f;
	      }
849 850 851 852 853 854 855
	    else if (XFASTINT (minibuf) == 0)
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f))
		    || FRAME_ICONIFIED_P (XFRAME (f)))
		  return f;
	      }
856
	    else if (WINDOWP (minibuf))
857
	      {
858 859 860 861 862 863
		if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf)
		    /* Check that F either is, or has forwarded its focus to,
		       MINIBUF's frame.  */
		    && (EQ (WINDOW_FRAME (XWINDOW (minibuf)), f)
			|| EQ (WINDOW_FRAME (XWINDOW (minibuf)),
			       FRAME_FOCUS_FRAME (XFRAME (f)))))
864 865 866
		  return f;
	      }
	    else
Jim Blandy's avatar
Jim Blandy committed
867
	      return f;
Jim Blandy's avatar
Jim Blandy committed
868
	  }
Jim Blandy's avatar
Jim Blandy committed
869

870
	if (EQ (frame, f))
Jim Blandy's avatar
Jim Blandy committed
871 872 873 874
	  passed++;
      }
}

Jim Blandy's avatar
Jim Blandy committed
875 876
/* Return the previous frame in the frame list before FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
877 878
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
879
   If MINIBUF is `visible', include all visible frames.
880
   If MINIBUF is 0, include all visible and iconified frames.
881 882
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
883
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
884 885
prev_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
886
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
887 888 889 890
{
  Lisp_Object tail;
  Lisp_Object prev;

Jim Blandy's avatar
Jim Blandy committed
891 892
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
893 894
    abort ();

Jim Blandy's avatar
Jim Blandy committed
895
  prev = Qnil;
896
  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
897
    {
898
      Lisp_Object f;
Jim Blandy's avatar
Jim Blandy committed
899

900
      f = XCONS (tail)->car;
901
      if (!FRAMEP (f))
902
	abort ();
Jim Blandy's avatar
Jim Blandy committed
903

904 905
      if (EQ (frame, f) && !NILP (prev))
	return prev;
Jim Blandy's avatar
Jim Blandy committed
906

907
      if (FRAME_KBOARD (XFRAME (f)) == FRAME_KBOARD (XFRAME (frame)))
908
	{
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939
	  /* Decide whether this frame is eligible to be returned,
	     according to minibuf.  */
	  if (NILP (minibuf))
	    {
	      if (! FRAME_MINIBUF_ONLY_P (XFRAME (f)))
		prev = f;
	    }
	  else if (WINDOWP (minibuf))
	    {
	      if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf)
		  /* Check that F either is, or has forwarded its focus to,
		     MINIBUF's frame.  */
		  && (EQ (WINDOW_FRAME (XWINDOW (minibuf)), f)
		      || EQ (WINDOW_FRAME (XWINDOW (minibuf)),
			     FRAME_FOCUS_FRAME (XFRAME (f)))))
		prev = f;
	    }
	  else if (EQ (minibuf, Qvisible))
	    {
	      FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	      if (FRAME_VISIBLE_P (XFRAME (f)))
		prev = f;
	    }
	  else if (XFASTINT (minibuf) == 0)
	    {
	      FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	      if (FRAME_VISIBLE_P (XFRAME (f))
		  || FRAME_ICONIFIED_P (XFRAME (f)))
		prev = f;
	    }
	  else
940 941
	    prev = f;
	}
Jim Blandy's avatar
Jim Blandy committed
942
    }
943 944 945 946 947 948 949 950 951 952 953

  /* We've scanned the entire list.  */
  if (NILP (prev))
    /* We went through the whole frame list without finding a single
       acceptable frame.  Return the original frame.  */
    return frame;
  else
    /* There were no acceptable frames in the list before FRAME; otherwise,
       we would have returned directly from the loop.  Since PREV is the last
       acceptable frame in the list, return it.  */
    return prev;
Jim Blandy's avatar
Jim Blandy committed
954 955
}

956

Jim Blandy's avatar
Jim Blandy committed
957 958
DEFUN ("next-frame", Fnext_frame, Snext_frame, 0, 2, 0,
  "Return the next frame in the frame list after FRAME.\n\
959
It considers only frames on the same terminal as FRAME.\n\
960
By default, skip minibuffer-only frames.\n\
961
If omitted, FRAME defaults to the selected frame.\n\
962
If optional argument MINIFRAME is nil, exclude minibuffer-only frames.\n\
963
If MINIFRAME is a window, include only its own frame\n\
964
and any frame now using that window as the minibuffer.\n\
965
If MINIFRAME is `visible', include all visible frames.\n\
966
If MINIFRAME is 0, include all visible and iconified frames.\n\
967
Otherwise, include all frames.")
Jim Blandy's avatar
Jim Blandy committed
968
  (frame, miniframe)
969
     Lisp_Object frame, miniframe;
Jim Blandy's avatar
Jim Blandy committed
970 971 972
{
  Lisp_Object tail;

Jim Blandy's avatar
Jim Blandy committed
973
  if (NILP (frame))
974
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
975
  else
Jim Blandy's avatar
Jim Blandy committed
976
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
977

Jim Blandy's avatar
Jim Blandy committed
978
  return next_frame (frame, miniframe);
Jim Blandy's avatar
Jim Blandy committed
979
}
Jim Blandy's avatar
Jim Blandy committed
980

981 982
DEFUN ("previous-frame", Fprevious_frame, Sprevious_frame, 0, 2, 0,
  "Return the previous frame in the frame list before FRAME.\n\
983
It considers only frames on the same terminal as FRAME.\n\
984 985 986
By default, skip minibuffer-only frames.\n\
If omitted, FRAME defaults to the selected frame.\n\
If optional argument MINIFRAME is nil, exclude minibuffer-only frames.\n\
987
If MINIFRAME is a window, include only its own frame\n\
988
and any frame now using that window as the minibuffer.\n\
989
If MINIFRAME is `visible', include all visible frames.\n\
990
If MINIFRAME is 0, include all visible and iconified frames.\n\
991
Otherwise, include all frames.")
992 993 994 995 996 997
  (frame, miniframe)
     Lisp_Object frame, miniframe;
{
  Lisp_Object tail;

  if (NILP (frame))
998
    XSETFRAME (frame, selected_frame);
999 1000 1001 1002 1003
  else
    CHECK_LIVE_FRAME (frame, 0);

  return prev_frame (frame, miniframe);
}
Jim Blandy's avatar
Jim Blandy committed
1004

1005 1006 1007
/* Return 1 if it is ok to delete frame F;
   0 if all frames aside from F are invisible.
   (Exception: if F is the terminal frame, and we are using X, return 1.)  */
Jim Blandy's avatar
Jim Blandy committed
1008

1009
int
1010 1011 1012 1013 1014 1015
other_visible_frames (f)
     FRAME_PTR f;
{
  /* We know the selected frame is visible,
     so if F is some other frame, it can't be the sole visible one.  */
  if (f == selected_frame)
1016 1017 1018 1019 1020 1021 1022 1023
    {
      Lisp_Object frames;
      int count = 0;

      for (frames = Vfr