frame.c 160 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Generic frame functions.
Glenn Morris's avatar
Glenn Morris committed
2

Paul Eggert's avatar
Paul Eggert committed
3
Copyright (C) 1993-1995, 1997, 1999-2015 Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
4 5 6

This file is part of GNU Emacs.

7
GNU Emacs is free software: you can redistribute it and/or modify
Jim Blandy's avatar
Jim Blandy committed
8
it under the terms of the GNU General Public License as published by
9 10
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jim Blandy's avatar
Jim Blandy committed
11 12 13 14 15 16 17

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
18
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Jim Blandy's avatar
Jim Blandy committed
19

20
#include <config.h>
21 22

#include <stdio.h>
23 24
#include <errno.h>
#include <limits.h>
25 26 27

#include <c-ctype.h>

28
#include "lisp.h"
29
#include "character.h"
30 31 32 33 34

#ifdef HAVE_WINDOW_SYSTEM
#include TERM_HEADER
#endif /* HAVE_WINDOW_SYSTEM */

35 36 37 38
#include "buffer.h"
/* These help us bind and responding to switch-frame events.  */
#include "commands.h"
#include "keyboard.h"
39
#include "frame.h"
Kim F. Storm's avatar
Kim F. Storm committed
40
#include "blockinput.h"
41
#include "termchar.h"
42
#include "termhooks.h"
Andreas Schwab's avatar
Andreas Schwab committed
43
#include "dispextern.h"
44
#include "window.h"
45
#include "font.h"
Andreas Schwab's avatar
Andreas Schwab committed
46
#ifdef HAVE_WINDOW_SYSTEM
47 48
#include "fontset.h"
#endif
49
#include "cm.h"
Morten Welinder's avatar
Morten Welinder committed
50 51
#ifdef MSDOS
#include "msdos.h"
52
#include "dosfns.h"
Morten Welinder's avatar
Morten Welinder committed
53
#endif
Paul Eggert's avatar
Paul Eggert committed
54 55 56
#ifdef USE_X_TOOLKIT
#include "widget.h"
#endif
Jim Blandy's avatar
Jim Blandy committed
57

58 59 60 61 62 63 64 65 66
/* The currently selected frame.  */

Lisp_Object selected_frame;

/* A frame which is not just a mini-buffer, or NULL if there are no such
   frames.  This is usually the most recent such frame that was selected.  */

static struct frame *last_nonminibuf_frame;

67
/* False means there are no visible garbaged frames.  */
68 69
bool frame_garbaged;

70 71 72
/* The default tool bar height for future frames.  */
int frame_default_tool_bar_height;

73 74 75 76
#ifdef HAVE_WINDOW_SYSTEM
static void x_report_frame_params (struct frame *, Lisp_Object *);
#endif

77
/* These setters are used only in this file, so they can be private.  */
78
static void
79 80 81 82
fset_buffer_predicate (struct frame *f, Lisp_Object val)
{
  f->buffer_predicate = val;
}
83
static void
84 85 86 87 88
fset_minibuffer_window (struct frame *f, Lisp_Object val)
{
  f->minibuffer_window = val;
}

89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
struct frame *
decode_live_frame (register Lisp_Object frame)
{
  if (NILP (frame))
    frame = selected_frame;
  CHECK_LIVE_FRAME (frame);
  return XFRAME (frame);
}

struct frame *
decode_any_frame (register Lisp_Object frame)
{
  if (NILP (frame))
    frame = selected_frame;
  CHECK_FRAME (frame);
  return XFRAME (frame);
}

107 108
#ifdef HAVE_WINDOW_SYSTEM

109 110 111
bool
window_system_available (struct frame *f)
{
112
  return f ? FRAME_WINDOW_P (f) || FRAME_MSDOS_P (f) : x_display_list != NULL;
113 114
}

115 116
#endif /* HAVE_WINDOW_SYSTEM */

117 118 119 120
struct frame *
decode_window_system_frame (Lisp_Object frame)
{
  struct frame *f = decode_live_frame (frame);
121

122 123 124 125 126 127 128 129 130 131 132 133 134
  if (!window_system_available (f))
    error ("Window system frame should be used");
  return f;
}

void
check_window_system (struct frame *f)
{
  if (!window_system_available (f))
    error (f ? "Window system frame should be used"
	   : "Window system is not in use or not initialized");
}

135
/* Return the value of frame parameter PROP in frame FRAME.  */
136

137 138 139 140 141 142 143 144 145 146 147 148 149
Lisp_Object
get_frame_param (register struct frame *frame, Lisp_Object prop)
{
  register Lisp_Object tem;

  tem = Fassq (prop, frame->param_alist);
  if (EQ (tem, Qnil))
    return tem;
  return Fcdr (tem);
}

/* Return 1 if `frame-inhibit-implied-resize' is non-nil or fullscreen
   state of frame F would be affected by a vertical (horizontal if
150 151
   HORIZONTAL is true) resize.  PARAMETER is the symbol of the frame
   parameter that is changed.  */
152
bool
153
frame_inhibit_resize (struct frame *f, bool horizontal, Lisp_Object parameter)
154
{
155 156 157
  return (EQ (frame_inhibit_implied_resize, Qt)
	  || (CONSP (frame_inhibit_implied_resize)
	      && !NILP (Fmemq (parameter, frame_inhibit_implied_resize)))
158 159
	  || !NILP (get_frame_param (f, Qfullscreen))
	  || FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f));
160 161
}

162
static void
163
set_menu_bar_lines (struct frame *f, Lisp_Object value, Lisp_Object oldval)
164 165 166 167 168 169
{
  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
170
     frame itself, and get an error because you can't switch buffers
171 172 173 174
     in or split the minibuffer window.  */
  if (FRAME_MINIBUF_ONLY_P (f))
    return;

175
  if (TYPE_RANGED_INTEGERP (int, value))
176 177 178 179
    nlines = XINT (value);
  else
    nlines = 0;

180 181
  if (nlines != olines)
    {
182
      windows_or_buffers_changed = 14;
183
      FRAME_MENU_BAR_LINES (f) = nlines;
184
      FRAME_MENU_BAR_HEIGHT (f) = nlines * FRAME_LINE_HEIGHT (f);
185 186 187
      change_frame_size (f, FRAME_COLS (f),
			 FRAME_LINES (f) + olines - nlines,
			 0, 1, 0, 0);
188
    }
189 190 191 192
}

Lisp_Object Vframe_list;

Jim Blandy's avatar
Jim Blandy committed
193

Jim Blandy's avatar
Jim Blandy committed
194
DEFUN ("framep", Fframep, Sframep, 1, 1, 0,
195
       doc: /* Return non-nil if OBJECT is a frame.
196 197 198 199 200 201
Value is:
  t for a termcap frame (a character-only terminal),
 'x' for an Emacs frame that is really an X window,
 'w32' for an Emacs frame that is a window on MS-Windows display,
 'ns' for an Emacs frame on a GNUstep or Macintosh Cocoa display,
 'pc' for a direct-write MS-DOS frame.
202
See also `frame-live-p'.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
203
  (Lisp_Object object)
Jim Blandy's avatar
Jim Blandy committed
204
{
205
  if (!FRAMEP (object))
Jim Blandy's avatar
Jim Blandy committed
206
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
207
  switch (XFRAME (object)->output_method)
Jim Blandy's avatar
Jim Blandy committed
208
    {
209
    case output_initial: /* The initial frame is like a termcap frame. */
Jim Blandy's avatar
Jim Blandy committed
210 211 212
    case output_termcap:
      return Qt;
    case output_x_window:
213
      return Qx;
214 215
    case output_w32:
      return Qw32;
216 217
    case output_msdos_raw:
      return Qpc;
218 219
    case output_ns:
      return Qns;
Jim Blandy's avatar
Jim Blandy committed
220
    default:
221
      emacs_abort ();
Jim Blandy's avatar
Jim Blandy committed
222 223 224
    }
}

Jim Blandy's avatar
Jim Blandy committed
225
DEFUN ("frame-live-p", Fframe_live_p, Sframe_live_p, 1, 1, 0,
226 227
       doc: /* Return non-nil if OBJECT is a frame which has not been deleted.
Value is nil if OBJECT is not a live frame.  If object is a live
228
frame, the return value indicates what sort of terminal device it is
Pavel Janík's avatar
Pavel Janík committed
229
displayed on.  See the documentation of `framep' for possible
Pavel Janík's avatar
Pavel Janík committed
230
return values.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
231
  (Lisp_Object object)
Jim Blandy's avatar
Jim Blandy committed
232
{
Jim Blandy's avatar
Jim Blandy committed
233 234 235
  return ((FRAMEP (object)
	   && FRAME_LIVE_P (XFRAME (object)))
	  ? Fframep (object)
Jim Blandy's avatar
Jim Blandy committed
236 237 238
	  : Qnil);
}

Paul Eggert's avatar
Paul Eggert committed
239
DEFUN ("window-system", Fwindow_system, Swindow_system, 0, 1, 0,
240
       doc: /* The name of the window system that FRAME is displaying through.
241 242 243 244 245 246 247 248 249 250 251 252
The value is a symbol:
 nil for a termcap frame (a character-only terminal),
 'x' for an Emacs frame that is really an X window,
 'w32' for an Emacs frame that is a window on MS-Windows display,
 'ns' for an Emacs frame on a GNUstep or Macintosh Cocoa display,
 'pc' for a direct-write MS-DOS frame.

FRAME defaults to the currently selected frame.

Use of this function as a predicate is deprecated.  Instead,
use `display-graphic-p' or any of the other `display-*-p'
predicates which report frame's specific UI-related capabilities.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
253
  (Lisp_Object frame)
254 255 256 257 258 259 260 261 262 263 264 265 266 267
{
  Lisp_Object type;
  if (NILP (frame))
    frame = selected_frame;

  type = Fframep (frame);

  if (NILP (type))
    wrong_type_argument (Qframep, frame);

  if (EQ (type, Qt))
    return Qnil;
  else
    return type;
268
}
269

270 271 272
/* Placeholder used by temacs -nw before window.el is loaded.  */
DEFUN ("frame-windows-min-size", Fframe_windows_min_size,
       Sframe_windows_min_size, 4, 4, 0,
273 274
       doc: /* */
       attributes: const)
275 276 277 278 279 280
     (Lisp_Object frame, Lisp_Object horizontal,
      Lisp_Object ignore, Lisp_Object pixelwise)
{
  return make_number (0);
}

281
static int
282 283
frame_windows_min_size (Lisp_Object frame, Lisp_Object horizontal,
			Lisp_Object ignore, Lisp_Object pixelwise)
284
{
285 286
  return XINT (call4 (Qframe_windows_min_size, frame, horizontal,
		      ignore, pixelwise));
287 288 289 290 291
}


/* Make sure windows sizes of frame F are OK.  new_width and new_height
   are in pixels.  A value of -1 means no change is requested for that
Paul Eggert's avatar
Paul Eggert committed
292
   size (but the frame may still have to be resized to accommodate
293 294 295
   windows with their minimum sizes).  This can either issue a request
   to resize the frame externally (via x_set_window_size), to resize the
   frame internally (via resize_frame_windows) or do nothing at all.
296 297 298 299

   The argument INHIBIT can assume the following values:

   0 means to unconditionally call x_set_window_size even if sizes
300 301
     apparently do not change.  Fx_create_frame uses this to pass the
     initial size to the window manager.
302

303 304
   1 means to call x_set_window_size if the outer frame size really
     changes.  Fset_frame_size, Fset_frame_height, ... use this.
305

306 307 308 309
   2 means to call x_set_window_size provided frame_inhibit_resize
     allows it.  The menu and tool bar code use this ("3" won't work
     here in general because menu and tool bar are often not counted in
     the frame's text height).
310

311 312 313
   3 means call x_set_window_size if window minimum sizes must be
     preserved or frame_inhibit_resize allows it.  x_set_left_fringe,
     x_set_scroll_bar_width, x_new_font ... use (or should use) this.
314

315 316 317
   4 means call x_set_window_size only if window minimum sizes must be
     preserved.  x_set_right_divider_width, x_set_border_width and the
     code responsible for wrapping the tool bar use this.
318 319

   5 means to never call x_set_window_size.  change_frame_size uses
320
     this.
321

322 323 324
   Note that even when x_set_window_size is not called, individual
   windows may have to be resized (via `window--sanitize-window-sizes')
   in order to support minimum size constraints.
325

326 327 328 329
   PRETEND is as for change_frame_size.  PARAMETER, if non-nil, is the
   symbol of the parameter changed (like `menu-bar-lines', `font', ...).
   This is passed on to frame_inhibit_resize to let the latter decide on
   a case-by-case basis whether the frame may be resized externally.  */
330
void
331 332
adjust_frame_size (struct frame *f, int new_width, int new_height, int inhibit,
		   bool pretend, Lisp_Object parameter)
333 334 335 336 337
{
  int unit_width = FRAME_COLUMN_WIDTH (f);
  int unit_height = FRAME_LINE_HEIGHT (f);
  int old_pixel_width = FRAME_PIXEL_WIDTH (f);
  int old_pixel_height = FRAME_PIXEL_HEIGHT (f);
338 339
  int old_cols = FRAME_COLS (f);
  int old_lines = FRAME_LINES (f);
340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366
  int new_pixel_width, new_pixel_height;
  /* The following two values are calculated from the old frame pixel
     sizes and any "new" settings for tool bar, menu bar and internal
     borders.  We do it this way to detect whether we have to call
     x_set_window_size as consequence of the new settings.  */
  int windows_width = FRAME_WINDOWS_WIDTH (f);
  int windows_height = FRAME_WINDOWS_HEIGHT (f);
  int min_windows_width, min_windows_height;
  /* These are a bit tedious, maybe we should use a macro.  */
  struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f));
  int old_windows_width = WINDOW_PIXEL_WIDTH (r);
  int old_windows_height
    = (WINDOW_PIXEL_HEIGHT (r)
       + (FRAME_HAS_MINIBUF_P (f)
	  ? WINDOW_PIXEL_HEIGHT (XWINDOW (FRAME_MINIBUF_WINDOW (f)))
	  : 0));
  int new_windows_width, new_windows_height;
  int old_text_width = FRAME_TEXT_WIDTH (f);
  int old_text_height = FRAME_TEXT_HEIGHT (f);
  /* If a size is < 0 use the old value.  */
  int new_text_width = (new_width >= 0) ? new_width : old_text_width;
  int new_text_height = (new_height >= 0) ? new_height : old_text_height;
  int new_cols, new_lines;
  bool inhibit_horizontal, inhibit_vertical;
  Lisp_Object frame;

  XSETFRAME (frame, f);
367 368 369 370 371 372 373 374 375 376 377 378 379 380

  /* `make-frame' initializes Vframe_adjust_size_history to (Qt) and
     strips its car when exiting.  Just in case make sure its size never
     exceeds 100.  */
  if (!NILP (Fconsp (Vframe_adjust_size_history))
      && EQ (Fcar (Vframe_adjust_size_history), Qt)
      && XFASTINT (Fsafe_length (Vframe_adjust_size_history)) <= 100)
    Vframe_adjust_size_history =
      Fcons (Qt, Fcons (list5 (make_number (0),
			       make_number (new_text_width),
			       make_number (new_text_height),
			       make_number (inhibit), parameter),
			Fcdr (Vframe_adjust_size_history)));

381 382 383
  /* The following two values are calculated from the old window body
     sizes and any "new" settings for scroll bars, dividers, fringes and
     margins (though the latter should have been processed already).  */
384 385 386 387
  min_windows_width
    = frame_windows_min_size (frame, Qt, (inhibit == 5) ? Qt : Qnil, Qt);
  min_windows_height
    = frame_windows_min_size (frame, Qnil, (inhibit == 5) ? Qt : Qnil, Qt);
388 389 390 391 392 393 394

  if (inhibit >= 2 && inhibit <= 4)
    /* If INHIBIT is in [2..4] inhibit if the "old" window sizes stay
       within the limits and either frame_inhibit_resize tells us to do
       so or INHIBIT equals 4.  */
    {
      inhibit_horizontal = ((windows_width >= min_windows_width
395 396
			     && (inhibit == 4
				 || frame_inhibit_resize (f, true, parameter)))
397 398
			    ? true : false);
      inhibit_vertical = ((windows_height >= min_windows_height
399 400
			   && (inhibit == 4
			       || frame_inhibit_resize (f, false, parameter)))
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428
			  ? true : false);
    }
  else
    /* Otherwise inhibit if INHIBIT equals 5.  */
    inhibit_horizontal = inhibit_vertical = inhibit == 5;

  new_pixel_width = ((inhibit_horizontal && (inhibit < 5))
		     ? old_pixel_width
		     : max (FRAME_TEXT_TO_PIXEL_WIDTH (f, new_text_width),
			    min_windows_width
			    + 2 * FRAME_INTERNAL_BORDER_WIDTH (f)));
  new_windows_width = new_pixel_width - 2 * FRAME_INTERNAL_BORDER_WIDTH (f);
  new_text_width = FRAME_PIXEL_TO_TEXT_WIDTH (f, new_pixel_width);
  new_cols = new_text_width / unit_width;

  new_pixel_height = ((inhibit_vertical && (inhibit < 5))
		      ? old_pixel_height
		      : max (FRAME_TEXT_TO_PIXEL_HEIGHT (f, new_text_height),
			     min_windows_height
			     + FRAME_TOP_MARGIN_HEIGHT (f)
			     + 2 * FRAME_INTERNAL_BORDER_WIDTH (f)));
  new_windows_height = (new_pixel_height
			- FRAME_TOP_MARGIN_HEIGHT (f)
			- 2 * FRAME_INTERNAL_BORDER_WIDTH (f));
  new_text_height = FRAME_PIXEL_TO_TEXT_HEIGHT (f, new_pixel_height);
  new_lines = new_text_height / unit_height;

#ifdef HAVE_WINDOW_SYSTEM
429
  if (FRAME_WINDOW_P (f)
430
      && f->can_x_set_window_size
431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447
      && ((!inhibit_horizontal
	   && (new_pixel_width != old_pixel_width
	       || inhibit == 0 || inhibit == 2))
	  || (!inhibit_vertical
	      && (new_pixel_height != old_pixel_height
		  || inhibit == 0 || inhibit == 2))))
    /* We are either allowed to change the frame size or the minimum
       sizes request such a change.  Do not care for fixing minimum
       sizes here, we do that eventually when we're called from
       change_frame_size.  */
    {
      /* Make sure we respect fullheight and fullwidth.  */
      if (inhibit_horizontal)
	new_text_width = old_text_width;
      else if (inhibit_vertical)
	new_text_height = old_text_height;

448 449 450 451 452 453 454 455 456 457 458
      if (!NILP (Fconsp (Vframe_adjust_size_history))
	  && EQ (Fcar (Vframe_adjust_size_history), Qt)
	  && XFASTINT (Fsafe_length (Vframe_adjust_size_history)) <= 100)
	Vframe_adjust_size_history =
	  Fcons (Qt, Fcons (list5 (make_number (1),
				   make_number (new_text_width),
				   make_number (new_text_height),
				   make_number (new_cols),
				   make_number (new_lines)),
			    Fcdr (Vframe_adjust_size_history)));

459 460 461 462 463 464 465 466 467 468 469 470
      x_set_window_size (f, 0, new_text_width, new_text_height, 1);
      f->resized_p = true;

      return;
    }
#endif

  if (new_text_width == old_text_width
      && new_text_height == old_text_height
      && new_windows_width == old_windows_width
      && new_windows_height == old_windows_height
      && new_pixel_width == old_pixel_width
471 472 473
      && new_pixel_height == old_pixel_height
      && new_cols == old_cols
      && new_lines == old_lines)
474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
    /* No change.  Sanitize window sizes and return.  */
    {
      sanitize_window_sizes (frame, Qt);
      sanitize_window_sizes (frame, Qnil);

      return;
    }

  block_input ();

#ifdef MSDOS
  /* We only can set screen dimensions to certain values supported
     by our video hardware.  Try to find the smallest size greater
     or equal to the requested dimensions.  */
  dos_set_window_size (&new_lines, &new_cols);
#endif

  if (new_windows_width != old_windows_width)
    {
      resize_frame_windows (f, new_windows_width, 1, 1);

      /* MSDOS frames cannot PRETEND, as they change frame size by
	 manipulating video hardware.  */
      if ((FRAME_TERMCAP_P (f) && !pretend) || FRAME_MSDOS_P (f))
	FrameCols (FRAME_TTY (f)) = new_cols;

#if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS)
      if (WINDOWP (f->tool_bar_window))
	{
	  XWINDOW (f->tool_bar_window)->pixel_width = new_windows_width;
	  XWINDOW (f->tool_bar_window)->total_cols
	    = new_windows_width / unit_width;
	}
#endif
    }

  if (new_windows_height != old_windows_height
      /* When the top margin has changed we have to recalculate the top
	 edges of all windows.  No such calculation is necessary for the
	 left edges.  */
      || WINDOW_TOP_PIXEL_EDGE (r) != FRAME_TOP_MARGIN_HEIGHT (f))
    {
      resize_frame_windows (f, new_windows_height, 0, 1);

      /* MSDOS frames cannot PRETEND, as they change frame size by
	 manipulating video hardware.  */
      if ((FRAME_TERMCAP_P (f) && !pretend) || FRAME_MSDOS_P (f))
521
	FrameRows (FRAME_TTY (f)) = new_lines + FRAME_TOP_MARGIN (f);
522 523 524 525 526 527 528 529 530 531
    }

  /* Assign new sizes.  */
  FRAME_TEXT_WIDTH (f) = new_text_width;
  FRAME_TEXT_HEIGHT (f) = new_text_height;
  FRAME_PIXEL_WIDTH (f) = new_pixel_width;
  FRAME_PIXEL_HEIGHT (f) = new_pixel_height;
  SET_FRAME_COLS (f, new_cols);
  SET_FRAME_LINES (f, new_lines);

532 533 534 535 536 537 538 539 540 541 542
  if (!NILP (Fconsp (Vframe_adjust_size_history))
      && EQ (Fcar (Vframe_adjust_size_history), Qt)
      && XFASTINT (Fsafe_length (Vframe_adjust_size_history)) <= 100)
    Vframe_adjust_size_history =
      Fcons (Qt, Fcons (list5 (make_number (2),
			       make_number (new_text_width),
			       make_number (new_text_height),
			       make_number (new_cols),
			       make_number (new_lines)),
			Fcdr (Vframe_adjust_size_history)));

543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572
  {
    struct window *w = XWINDOW (FRAME_SELECTED_WINDOW (f));
    int text_area_x, text_area_y, text_area_width, text_area_height;

    window_box (w, TEXT_AREA, &text_area_x, &text_area_y, &text_area_width,
		&text_area_height);
    if (w->cursor.x >= text_area_x + text_area_width)
      w->cursor.hpos = w->cursor.x = 0;
    if (w->cursor.y >= text_area_y + text_area_height)
      w->cursor.vpos = w->cursor.y = 0;
  }

  /* Sanitize window sizes.  */
  sanitize_window_sizes (frame, Qt);
  sanitize_window_sizes (frame, Qnil);

  adjust_frame_glyphs (f);
  calculate_costs (f);
  SET_FRAME_GARBAGED (f);

  /* A frame was "resized" if one of its pixelsizes changed, even if its
     X window wasn't resized at all.  */
  f->resized_p = (new_pixel_width != old_pixel_width
		  || new_pixel_height != old_pixel_height);

  unblock_input ();

  run_window_configuration_change_hook (f);
}

573 574 575 576 577 578 579
/* Allocate basically initialized frame.  */

static struct frame *
allocate_frame (void)
{
  return ALLOCATE_ZEROED_PSEUDOVECTOR (struct frame, face_cache, PVEC_FRAME);
}
580

Jim Blandy's avatar
Jim Blandy committed
581
struct frame *
582
make_frame (bool mini_p)
Jim Blandy's avatar
Jim Blandy committed
583
{
Jim Blandy's avatar
Jim Blandy committed
584 585
  Lisp_Object frame;
  register struct frame *f;
586
  register struct window *rw, *mw;
Jim Blandy's avatar
Jim Blandy committed
587 588
  register Lisp_Object root_window;
  register Lisp_Object mini_window;
589 590

  f = allocate_frame ();
591
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
592

593
#ifdef USE_GTK
594 595
  /* Initialize Lisp data.  Note that allocate_frame initializes all
     Lisp data to nil, so do it only for slots which should not be nil.  */
596
  fset_tool_bar_position (f, Qtop);
597
#endif
598 599 600 601 602

  /* Initialize non-Lisp data.  Note that allocate_frame zeroes out all
     non-Lisp data, so do it only for slots which should not be zero.
     To avoid subtle bugs and for the sake of readability, it's better to
     initialize enum members explicitly even if their values are zero.  */
603 604 605
  f->wants_modeline = true;
  f->redisplay = true;
  f->garbaged = true;
606 607
  f->can_x_set_window_size = false;
  f->can_run_window_configuration_change_hook = false;
608
  f->tool_bar_redisplayed_once = false;
609 610
  f->column_width = 1;  /* !FRAME_WINDOW_P value.  */
  f->line_height = 1;  /* !FRAME_WINDOW_P value.  */
611
#ifdef HAVE_WINDOW_SYSTEM
612
  f->vertical_scroll_bar_type = vertical_scroll_bar_none;
613
  f->horizontal_scroll_bars = false;
614
  f->want_fullscreen = FULLSCREEN_NONE;
615 616 617
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
  f->last_tool_bar_item = -1;
#endif
618
#endif
Jim Blandy's avatar
Jim Blandy committed
619

620
  root_window = make_window ();
621
  rw = XWINDOW (root_window);
Jim Blandy's avatar
Jim Blandy committed
622 623
  if (mini_p)
    {
624
      mini_window = make_window ();
625 626 627 628 629
      mw = XWINDOW (mini_window);
      wset_next (rw, mini_window);
      wset_prev (mw, root_window);
      mw->mini = 1;
      wset_frame (mw, frame);
630
      fset_minibuffer_window (f, mini_window);
Jim Blandy's avatar
Jim Blandy committed
631 632 633 634
    }
  else
    {
      mini_window = Qnil;
635
      wset_next (rw, Qnil);
636
      fset_minibuffer_window (f, Qnil);
Jim Blandy's avatar
Jim Blandy committed
637 638
    }

639
  wset_frame (rw, frame);
Jim Blandy's avatar
Jim Blandy committed
640 641 642

  /* 10 is arbitrary,
     just so that there is "something there."
643
     Correct size will be set up later with adjust_frame_size.  */
Jim Blandy's avatar
Jim Blandy committed
644

645
  SET_FRAME_COLS (f, 10);
646
  SET_FRAME_LINES (f, 10);
647 648
  SET_FRAME_WIDTH (f, FRAME_COLS (f) * FRAME_COLUMN_WIDTH (f));
  SET_FRAME_HEIGHT (f, FRAME_LINES (f) * FRAME_LINE_HEIGHT (f));
Jim Blandy's avatar
Jim Blandy committed
649

650 651 652 653
  rw->total_cols = 10;
  rw->pixel_width = rw->total_cols * FRAME_COLUMN_WIDTH (f);
  rw->total_lines = mini_p ? 9 : 10;
  rw->pixel_height = rw->total_lines * FRAME_LINE_HEIGHT (f);
Jim Blandy's avatar
Jim Blandy committed
654 655 656

  if (mini_p)
    {
657 658 659 660 661 662
      mw->top_line = rw->total_lines;
      mw->pixel_top = rw->pixel_height;
      mw->total_cols = rw->total_cols;
      mw->pixel_width = rw->pixel_width;
      mw->total_lines = 1;
      mw->pixel_height = FRAME_LINE_HEIGHT (f);
Jim Blandy's avatar
Jim Blandy committed
663 664
    }

Jim Blandy's avatar
Jim Blandy committed
665
  /* Choose a buffer for the frame's root window.  */
Jim Blandy's avatar
Jim Blandy committed
666
  {
667
    Lisp_Object buf = Fcurrent_buffer ();
Jim Blandy's avatar
Jim Blandy committed
668

669 670
    /* If current buffer is hidden, try to find another one.  */
    if (BUFFER_HIDDEN_P (XBUFFER (buf)))
671
      buf = other_buffer_safely (buf);
672

673 674
    /* Use set_window_buffer, not Fset_window_buffer, and don't let
       hooks be run by it.  The reason is that the whole frame/window
Juanma Barranquero's avatar
Juanma Barranquero committed
675
       arrangement is not yet fully initialized at this point.  Windows
676 677 678
       don't have the right size, glyph matrices aren't initialized
       etc.  Running Lisp functions at this point surely ends in a
       SEGV.  */
679
    set_window_buffer (root_window, buf, 0, 0);
680
    fset_buffer_list (f, list1 (buf));
Jim Blandy's avatar
Jim Blandy committed
681 682
  }

Jim Blandy's avatar
Jim Blandy committed
683
  if (mini_p)
684 685 686 687 688 689 690 691 692
    {
      set_window_buffer (mini_window,
			 (NILP (Vminibuffer_list)
			  ? get_minibuffer (0)
			  : Fcar (Vminibuffer_list)),
			 0, 0);
      /* No horizontal scroll bars in minibuffers.  */
      wset_horizontal_scroll_bar (mw, Qnil);
    }
Jim Blandy's avatar
Jim Blandy committed
693

694 695
  fset_root_window (f, root_window);
  fset_selected_window (f, root_window);
Jim Blandy's avatar
Jim Blandy committed
696 697
  /* Make sure this window seems more recently used than
     a newly-created, never-selected window.  */
698
  XWINDOW (f->selected_window)->use_time = ++window_select_count;
Jim Blandy's avatar
Jim Blandy committed
699

Jim Blandy's avatar
Jim Blandy committed
700
  return f;
Jim Blandy's avatar
Jim Blandy committed
701 702
}

703
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
704
/* Make a frame using a separate minibuffer window on another frame.
Jim Blandy's avatar
Jim Blandy committed
705 706 707
   MINI_WINDOW is the minibuffer window to use.  nil means use the
   default (the global minibuffer).  */

Jim Blandy's avatar
Jim Blandy committed
708
struct frame *
709
make_frame_without_minibuffer (register Lisp_Object mini_window, KBOARD *kb, Lisp_Object display)
Jim Blandy's avatar
Jim Blandy committed
710
{
Jim Blandy's avatar
Jim Blandy committed
711
  register struct frame *f;
712
  struct gcpro gcpro1;
Jim Blandy's avatar
Jim Blandy committed
713

714
  if (!NILP (mini_window))
715
    CHECK_LIVE_WINDOW (mini_window);
Jim Blandy's avatar
Jim Blandy committed
716

717
  if (!NILP (mini_window)
718
      && FRAME_KBOARD (XFRAME (XWINDOW (mini_window)->frame)) != kb)
719
    error ("Frame and minibuffer must be on the same terminal");
720

Jim Blandy's avatar
Jim Blandy committed
721 722
  /* Make a frame containing just a root window.  */
  f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
723

724 725 726
  if (NILP (mini_window))
    {
      /* Use default-minibuffer-frame if possible.  */
727 728
      if (!FRAMEP (KVAR (kb, Vdefault_minibuffer_frame))
	  || ! FRAME_LIVE_P (XFRAME (KVAR (kb, Vdefault_minibuffer_frame))))
729
	{
730 731 732 733
          Lisp_Object frame_dummy;

          XSETFRAME (frame_dummy, f);
          GCPRO1 (frame_dummy);
734
	  /* If there's no minibuffer frame to use, create one.  */
Paul Eggert's avatar
Paul Eggert committed
735 736
	  kset_default_minibuffer_frame
	    (kb, call1 (intern ("make-initial-minibuffer-frame"), display));
737
          UNGCPRO;
738
	}
739

740 741
      mini_window
	= XFRAME (KVAR (kb, Vdefault_minibuffer_frame))->minibuffer_window;
742
    }
743

744
  fset_minibuffer_window (f, mini_window);
745 746 747

  /* Make the chosen minibuffer window display the proper minibuffer,
     unless it is already showing a minibuffer.  */
748
  if (NILP (Fmemq (XWINDOW (mini_window)->contents, Vminibuffer_list)))
749 750 751 752 753 754
    /* Use set_window_buffer instead of Fset_window_buffer (see
       discussion of bug#11984, bug#12025, bug#12026).  */
    set_window_buffer (mini_window,
		       (NILP (Vminibuffer_list)
			? get_minibuffer (0)
			: Fcar (Vminibuffer_list)), 0, 0);
Jim Blandy's avatar
Jim Blandy committed
755
  return f;
Jim Blandy's avatar
Jim Blandy committed
756 757
}

Jim Blandy's avatar
Jim Blandy committed
758
/* Make a frame containing only a minibuffer window.  */
Jim Blandy's avatar
Jim Blandy committed
759

Jim Blandy's avatar
Jim Blandy committed
760
struct frame *
761
make_minibuffer_frame (void)
Jim Blandy's avatar
Jim Blandy committed
762
{
Jim Blandy's avatar
Jim Blandy committed
763
  /* First make a frame containing just a root window, no minibuffer.  */
Jim Blandy's avatar
Jim Blandy committed
764

Jim Blandy's avatar
Jim Blandy committed
765
  register struct frame *f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
766
  register Lisp_Object mini_window;
Jim Blandy's avatar
Jim Blandy committed
767
  register Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
768

769
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
770

771
  f->auto_raise = 0;
Jim Blandy's avatar
Jim Blandy committed
772 773 774
  f->auto_lower = 0;
  f->no_split = 1;
  f->wants_modeline = 0;
Jim Blandy's avatar
Jim Blandy committed
775 776 777 778 779

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

780 781
  mini_window = f->root_window;
  fset_minibuffer_window (f, mini_window);
782
  XWINDOW (mini_window)->mini = 1;
Paul Eggert's avatar
Paul Eggert committed
783 784 785
  wset_next (XWINDOW (mini_window), Qnil);
  wset_prev (XWINDOW (mini_window), Qnil);
  wset_frame (XWINDOW (mini_window), frame);
Jim Blandy's avatar
Jim Blandy committed
786 787 788

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

789 790 791 792 793 794
  /* Use set_window_buffer instead of Fset_window_buffer (see
     discussion of bug#11984, bug#12025, bug#12026).  */
  set_window_buffer (mini_window,
		     (NILP (Vminibuffer_list)
		      ? get_minibuffer (0)
		      : Fcar (Vminibuffer_list)), 0, 0);
Jim Blandy's avatar
Jim Blandy committed
795
  return f;
Jim Blandy's avatar
Jim Blandy committed
796
}
797
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
798

799
/* Construct a frame that refers to a terminal.  */
Jim Blandy's avatar
Jim Blandy committed
800

801
static printmax_t tty_frame_count;
802

Jim Blandy's avatar
Jim Blandy committed
803
struct frame *
804
make_initial_frame (void)
Jim Blandy's avatar
Jim Blandy committed
805
{
806
  struct frame *f;
807
  struct terminal *terminal;
808
  Lisp_Object frame;
809

810
  eassert (initial_kboard);
811

812 813 814
  /* The first call must initialize Vframe_list.  */
  if (! (NILP (Vframe_list) || CONSP (Vframe_list)))
    Vframe_list = Qnil;
Jim Blandy's avatar
Jim Blandy committed
815

816
  terminal = init_initial_terminal ();
817 818 819 820 821 822

  f = make_frame (1);
  XSETFRAME (frame, f);

  Vframe_list = Fcons (frame, Vframe_list);

823
  tty_frame_count = 1;
824
  fset_name (f, build_pure_c_string ("F1"));
825

826
  SET_FRAME_VISIBLE (f, 1);
827

828 829 830
  f->output_method = terminal->type;
  f->terminal = terminal;
  f->terminal->reference_count++;
831
  f->output_data.nothing = 0;
832

833 834
  FRAME_FOREGROUND_PIXEL (f) = FACE_TTY_DEFAULT_FG_COLOR;
  FRAME_BACKGROUND_PIXEL (f) = FACE_TTY_DEFAULT_BG_COLOR;
835

836 837
#ifdef HAVE_WINDOW_SYSTEM
  f->vertical_scroll_bar_type = vertical_scroll_bar_none;
838
  f->horizontal_scroll_bars = false;
839
#endif
840 841 842

  /* The default value of menu-bar-mode is t.  */
  set_menu_bar_lines (f, make_number (1), Qnil);
843

844 845 846
  if (!noninteractive)
    init_frame_faces (f);

847 848
  last_nonminibuf_frame = f;

849 850 851 852
  return f;
}


853
static struct frame *
854
make_terminal_frame (struct terminal *terminal)
855 856 857
{
  register struct frame *f;
  Lisp_Object frame;
858
  char name[sizeof "F" + INT_STRLEN_BOUND (printmax_t)];
859

860 861
  if (!terminal->name)
    error ("Terminal is not live, can't create new frames on it");
862

Jim Blandy's avatar
Jim Blandy committed
863
  f = make_frame (1);
864

865
  XSETFRAME (frame, f);
866 867
  Vframe_list = Fcons (frame, Vframe_list);

868
  fset_name (f, make_formatted_string (name, "F%"pMd, ++tty_frame_count));
869

870 871
  SET_FRAME_VISIBLE (f, 1);

872 873
  f->terminal = terminal;
  f->terminal->reference_count++;
874
#ifdef MSDOS
875
  f->output_data.tty->display_info = &the_only_display_info;
876 877 878
  if (!inhibit_window_system
      && (!FRAMEP (selected_frame) || !FRAME_LIVE_P (XFRAME (selected_frame))
	  || XFRAME (selected_frame)->output_method == output_msdos_raw))
879
    f->output_method = output_msdos_raw;
880 881
  else
    f->output_method = output_termcap;
882 883 884 885 886 887
#else /* not MSDOS */
  f->output_method = output_termcap;
  create_tty_output (f);
  FRAME_FOREGROUND_PIXEL (f) = FACE_TTY_DEFAULT_FG_COLOR;
  FRAME_BACKGROUND_PIXEL (f) = FACE_TTY_DEFAULT_BG_COLOR;
#endif /* not MSDOS */
888

889
#ifdef HAVE_WINDOW_SYSTEM
890
  f->vertical_scroll_bar_type = vertical_scroll_bar_none;
891
  f->horizontal_scroll_bars = false;
892
#endif
893

894
  FRAME_MENU_BAR_LINES (f) = NILP (Vmenu_bar_mode) ? 0 : 1;
895
  FRAME_LINES (f) = FRAME_LINES (f) - FRAME_MENU_BAR_LINES (f);
896
  FRAME_MENU_BAR_HEIGHT (f) = FRAME_MENU_BAR_LINES (f) * FRAME_LINE_HEIGHT (f);
897
  FRAME_TEXT_HEIGHT (f) = FRAME_TEXT_HEIGHT (f) - FRAME_MENU_BAR_HEIGHT (f);
898

899
  /* Set the top frame to the newly created frame.  */
900 901
  if (FRAMEP (FRAME_TTY (f)->top_frame)
      && FRAME_LIVE_P (XFRAME (FRAME_TTY (f)->top_frame)))
902
    SET_FRAME_VISIBLE (XFRAME (FRAME_TTY (f)->top_frame), 2); /* obscured */
903 904 905

  FRAME_TTY (f)->top_frame = frame;

906 907
  if (!noninteractive)
    init_frame_faces (f);
908

Jim Blandy's avatar
Jim Blandy committed
909
  return f;
Jim Blandy's avatar
Jim Blandy committed
910
}
911

912 913
/* Get a suitable value for frame parameter PARAMETER for a newly
   created frame, based on (1) the user-supplied frame parameter
914
   alist SUPPLIED_PARMS, and (2) CURRENT_VALUE.  */
915 916 917 918 919 920 921 922 923 924

static Lisp_Object
get_future_frame_param (Lisp_Object parameter,
                        Lisp_Object supplied_parms,
                        char *current_value)
{
  Lisp_Object result;

  result = Fassq (parameter, supplied_parms);
  if (NILP (result))
925
    result = Fassq (parameter, XFRAME (selected_frame)->param_alist);
926 927 928 929 930 931 932 933 934 935
  if (NILP (result) && current_value != NULL)
    result = build_string (current_value);
  if (!NILP (result) && !STRINGP (result))
    result = XCDR (result);
  if (NILP (result) || !STRINGP (result))
    result = Qnil;

  return result;
}

936
DEFUN ("make-terminal-frame", Fmake_terminal_frame, Smake_terminal_frame,
937
       1, 1, 0,
938
       doc: /* Create an additional terminal frame, possibly on another terminal.
939
This function takes one argument, an alist specifying frame parameters.
940

941 942
You can create multiple frames on a single text terminal, but only one
of them (the selected terminal frame) is actually displayed.
943 944 945 946 947 948 949 950

In practice, generally you don't need to specify any parameters,
except when you want to create a new frame on another terminal.
In that case, the `tty' parameter specifies the device file to open,
and the `tty-type' parameter specifies the terminal type.  Example:

   (make-terminal-frame '((tty . "/dev/pts/5") (tty-type . "xterm")))

951 952
Note that changing the size of one terminal frame automatically
affects all frames on the same terminal device.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
953
  (Lisp_Object parms)
954 955
{
  struct frame *f;
956
  struct terminal *t = NULL;
957
  Lisp_Object frame, tem;
958
  struct frame *sf = SELECTED_FRAME ();
959

960
#ifdef MSDOS
961 962
  if (sf->output_method != output_msdos_raw
      && sf->output_method != output_termcap)
963
    emacs_abort ();
964 965
#else /* not MSDOS */

966
#ifdef WINDOWSNT                           /* This should work now! */
967
  if (sf->output_method != output_termcap)
968
    error ("Not using an ASCII terminal now; cannot make a new ASCII frame");
969
#endif
970
#endif /* not MSDOS */
971

972
  {
973
    Lisp_Object terminal;
974

975
    terminal = Fassq (Qterminal, parms);
976
    if (CONSP (terminal))
977
      {
978
        terminal = XCDR (terminal);
979
        t = decode_live_terminal (terminal);
980
      }
981 982 983 984 985 986 987
#ifdef MSDOS
    if (t && t != the_only_display_info.terminal)
      /* msdos.c assumes a single tty_display_info object.  */
      error ("Multiple terminals are not supported on this platform");
    if (!t)
      t = the_only_display_info.terminal;
#endif
988
  }
989

990
  if (!t)
991
    {
992
      char *name = 0, *type = 0;
993
      Lisp_Object tty, tty_type;
994
      USE_SAFE_ALLOCA;