xfns.c 176 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Functions for the X window system.
Glenn Morris's avatar
Glenn Morris committed
2

3
Copyright (C) 1989, 1992-2012  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

Richard M. Stallman's avatar
Richard M. Stallman committed
20
#include <config.h>
21
#include <stdio.h>
22
#include <math.h>
23 24
#include <unistd.h>

25
/* This makes the fields of a Display accessible, in Xlib header files.  */
26

27 28
#define XLIB_ILLEGAL_ACCESS

Jim Blandy's avatar
Jim Blandy committed
29 30
#include "lisp.h"
#include "xterm.h"
Jim Blandy's avatar
Jim Blandy committed
31
#include "frame.h"
Jim Blandy's avatar
Jim Blandy committed
32
#include "window.h"
33
#include "character.h"
Jim Blandy's avatar
Jim Blandy committed
34
#include "buffer.h"
Kenichi Handa's avatar
Kenichi Handa committed
35
#include "intervals.h"
Jim Blandy's avatar
Jim Blandy committed
36
#include "dispextern.h"
Jim Blandy's avatar
Jim Blandy committed
37
#include "keyboard.h"
38
#include "blockinput.h"
39
#include <epaths.h>
Karl Heuer's avatar
Karl Heuer committed
40
#include "charset.h"
Kenichi Handa's avatar
Kenichi Handa committed
41
#include "coding.h"
Karl Heuer's avatar
Karl Heuer committed
42
#include "fontset.h"
43 44
#include "systime.h"
#include "termhooks.h"
45
#include "atimer.h"
46
#include "termchar.h"
Kenichi Handa's avatar
Kenichi Handa committed
47 48
#include "font.h"

Jim Blandy's avatar
Jim Blandy committed
49
#ifdef HAVE_X_WINDOWS
50

51 52
#include <sys/types.h>
#include <sys/stat.h>
Jim Blandy's avatar
Jim Blandy committed
53

54
#if 1 /* Used to be #ifdef EMACS_BITMAP_FILES, but this should always work.  */
55 56
#include "bitmaps/gray.xbm"
#else
Jim Blandy's avatar
Jim Blandy committed
57
#include <X11/bitmaps/gray>
58
#endif
Jim Blandy's avatar
Jim Blandy committed
59

60 61
#include "xsettings.h"

Jan Djärv's avatar
Jan Djärv committed
62 63 64 65
#ifdef USE_GTK
#include "gtkutil.h"
#endif

66 67 68
#ifdef USE_X_TOOLKIT
#include <X11/Shell.h>

69
#ifndef USE_MOTIF
Chong Yidong's avatar
Chong Yidong committed
70 71
#ifdef HAVE_XAW3D
#include <X11/Xaw3d/Paned.h>
Chong Yidong's avatar
Chong Yidong committed
72
#include <X11/Xaw3d/Label.h>
Chong Yidong's avatar
Chong Yidong committed
73
#else /* !HAVE_XAW3D */
74 75
#include <X11/Xaw/Paned.h>
#include <X11/Xaw/Label.h>
Chong Yidong's avatar
Chong Yidong committed
76
#endif /* HAVE_XAW3D */
77
#endif /* USE_MOTIF */
78 79 80 81 82

#ifdef USG
#undef USG	/* ####KLUDGE for Solaris 2.2 and up */
#include <X11/Xos.h>
#define USG
83 84
#ifdef USG /* Pacify gcc -Wunused-macros.  */
#endif
85 86 87 88 89 90 91 92
#else
#include <X11/Xos.h>
#endif

#include "widget.h"

#include "../lwlib/lwlib.h"

93 94 95 96
#ifdef USE_MOTIF
#include <Xm/Xm.h>
#include <Xm/DialogS.h>
#include <Xm/FileSB.h>
Jan D's avatar
Jan D committed
97 98
#include <Xm/List.h>
#include <Xm/TextF.h>
99 100
#endif

101 102 103 104
#ifdef USE_LUCID
#include "../lwlib/xlwmenu.h"
#endif

Juanma Barranquero's avatar
Juanma Barranquero committed
105
#if !defined (NO_EDITRES)
106
#define HACK_EDITRES
107
extern void _XEditResCheckMessages (Widget, XtPointer, XEvent *, Boolean *);
Dan Nicolaescu's avatar
Dan Nicolaescu committed
108
#endif /* not defined NO_EDITRES */
109

110 111
/* Unique id counter for widgets created by the Lucid Widget Library.  */

112 113
extern LWLIB_ID widget_id_tick;

114 115 116 117
#ifdef USE_MOTIF

#endif /* USE_MOTIF */

118 119
#endif /* USE_X_TOOLKIT */

Kenichi Handa's avatar
Kenichi Handa committed
120 121 122 123
#ifdef USE_GTK

#endif /* USE_GTK */

Richard M. Stallman's avatar
Richard M. Stallman committed
124 125
#define MAXREQUEST(dpy) (XMaxRequestSize (dpy))

126
/* Nonzero if using X.  */
127

128
int x_in_use;
Jim Blandy's avatar
Jim Blandy committed
129

130 131 132
static Lisp_Object Qsuppress_icon;
static Lisp_Object Qundefined_color;
static Lisp_Object Qcompound_text, Qcancel_timer;
133
Lisp_Object Qfont_param;
Jim Blandy's avatar
Jim Blandy committed
134

135
#ifdef GLYPH_DEBUG
136 137
static ptrdiff_t image_cache_refcount;
static int dpyinfo_refcount;
138 139
#endif

140 141
static struct x_display_info *x_display_info_for_name (Lisp_Object);

Jim Blandy's avatar
Jim Blandy committed
142

Richard M. Stallman's avatar
Richard M. Stallman committed
143
/* Error if we are not connected to X.  */
144

Karl Heuer's avatar
Karl Heuer committed
145
void
146
check_x (void)
Richard M. Stallman's avatar
Richard M. Stallman committed
147
{
148
  if (! x_in_use)
Richard M. Stallman's avatar
Richard M. Stallman committed
149 150 151
    error ("X windows are not in use or not initialized");
}

152 153
/* Nonzero if we can use mouse menus.
   You should not call this unless HAVE_MENUS is defined.  */
154 155

int
156
have_menus_p (void)
157
{
158 159 160 161 162 163 164
  return x_in_use;
}

/* Extract a frame as a FRAME_PTR, defaulting to the selected frame
   and checking validity for X.  */

FRAME_PTR
165
check_x_frame (Lisp_Object frame)
166 167 168 169
{
  FRAME_PTR f;

  if (NILP (frame))
Gerd Moellmann's avatar
Gerd Moellmann committed
170
    frame = selected_frame;
171
  CHECK_LIVE_FRAME (frame);
Gerd Moellmann's avatar
Gerd Moellmann committed
172
  f = XFRAME (frame);
173
  if (! FRAME_X_P (f))
174
    error ("Non-X frame used");
175
  return f;
176 177
}

178
/* Let the user specify an X display with a Lisp object.
179
   OBJECT may be nil, a frame or a terminal object.
180 181 182
   nil stands for the selected frame--or, if that is not an X frame,
   the first X display on the list.  */

183
struct x_display_info *
184
check_x_display_info (Lisp_Object object)
185
{
186
  struct x_display_info *dpyinfo = NULL;
187

188
  if (NILP (object))
189
    {
Gerd Moellmann's avatar
Gerd Moellmann committed
190
      struct frame *sf = XFRAME (selected_frame);
191

Gerd Moellmann's avatar
Gerd Moellmann committed
192
      if (FRAME_X_P (sf) && FRAME_LIVE_P (sf))
193
	dpyinfo = FRAME_X_DISPLAY_INFO (sf);
194
      else if (x_display_list != 0)
195
	dpyinfo = x_display_list;
196 197 198
      else
	error ("X windows are not in use or not initialized");
    }
199
  else if (TERMINALP (object))
200
    {
201
      struct terminal *t = get_terminal (object, 1);
202

203
      if (t->type != output_x_window)
204
        error ("Terminal %"pI"d is not an X display", XINT (object));
205

206
      dpyinfo = t->display_info.x;
207
    }
208 209
  else if (STRINGP (object))
    dpyinfo = x_display_info_for_name (object);
210 211
  else
    {
212
      FRAME_PTR f = check_x_frame (object);
213
      dpyinfo = FRAME_X_DISPLAY_INFO (f);
214
    }
215 216

  return dpyinfo;
217
}
218

219

Jim Blandy's avatar
Jim Blandy committed
220 221
/* Return the Emacs frame-object corresponding to an X window.
   It could be the frame's main window or an icon window.  */
Jim Blandy's avatar
Jim Blandy committed
222

223
/* This function can be called during GC, so use GC_xxx type test macros.  */
224

Jim Blandy's avatar
Jim Blandy committed
225
struct frame *
226
x_window_to_frame (struct x_display_info *dpyinfo, int wdesc)
Jim Blandy's avatar
Jim Blandy committed
227
{
Jim Blandy's avatar
Jim Blandy committed
228 229
  Lisp_Object tail, frame;
  struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
230

231 232
  if (wdesc == None) return 0;

233
  for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail))
Jim Blandy's avatar
Jim Blandy committed
234
    {
235
      frame = XCAR (tail);
236
      if (!FRAMEP (frame))
Jim Blandy's avatar
Jim Blandy committed
237
        continue;
Jim Blandy's avatar
Jim Blandy committed
238
      f = XFRAME (frame);
239
      if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
240
	continue;
241
      if (f->output_data.x->hourglass_window == wdesc)
242
	return f;
243
#ifdef USE_X_TOOLKIT
244
      if ((f->output_data.x->edit_widget
245
	   && XtWindow (f->output_data.x->edit_widget) == wdesc)
246 247 248
	  /* A tooltip frame?  */
	  || (!f->output_data.x->edit_widget
	      && FRAME_X_WINDOW (f) == wdesc)
249
          || f->output_data.x->icon_desc == wdesc)
250 251
        return f;
#else /* not USE_X_TOOLKIT */
Jan Djärv's avatar
Jan Djärv committed
252 253 254
#ifdef USE_GTK
      if (f->output_data.x->edit_widget)
      {
Kenichi Handa's avatar
Kenichi Handa committed
255
        GtkWidget *gwdesc = xg_win_to_widget (dpyinfo->display, wdesc);
Jan Djärv's avatar
Jan Djärv committed
256 257 258 259 260
        struct x_output *x = f->output_data.x;
        if (gwdesc != 0 && gwdesc == x->edit_widget)
          return f;
      }
#endif /* USE_GTK */
261
      if (FRAME_X_WINDOW (f) == wdesc
262
          || f->output_data.x->icon_desc == wdesc)
Jim Blandy's avatar
Jim Blandy committed
263
        return f;
264 265 266 267 268
#endif /* not USE_X_TOOLKIT */
    }
  return 0;
}

Jan Djärv's avatar
Jan Djärv committed
269
#if defined (USE_X_TOOLKIT) || defined (USE_GTK)
270 271 272 273
/* Like x_window_to_frame but also compares the window with the widget's
   windows.  */

struct frame *
274
x_any_window_to_frame (struct x_display_info *dpyinfo, int wdesc)
275 276
{
  Lisp_Object tail, frame;
277
  struct frame *f, *found;
278
  struct x_output *x;
279

280 281
  if (wdesc == None) return NULL;

282
  found = NULL;
283
  for (tail = Vframe_list; CONSP (tail) && !found; tail = XCDR (tail))
284
    {
285
      frame = XCAR (tail);
286
      if (!FRAMEP (frame))
287
        continue;
288

289
      f = XFRAME (frame);
290
      if (FRAME_X_P (f) && FRAME_X_DISPLAY_INFO (f) == dpyinfo)
291
	{
292 293
	  /* This frame matches if the window is any of its widgets.  */
	  x = f->output_data.x;
294
	  if (x->hourglass_window == wdesc)
295 296 297
	    found = f;
	  else if (x->widget)
	    {
Jan Djärv's avatar
Jan Djärv committed
298
#ifdef USE_GTK
Kenichi Handa's avatar
Kenichi Handa committed
299
              GtkWidget *gwdesc = xg_win_to_widget (dpyinfo->display, wdesc);
Jan Djärv's avatar
Jan Djärv committed
300
              if (gwdesc != 0
301
                  && gtk_widget_get_toplevel (gwdesc) == x->widget)
Jan Djärv's avatar
Jan Djärv committed
302 303
                found = f;
#else
304 305
	      if (wdesc == XtWindow (x->widget)
		  || wdesc == XtWindow (x->column_widget)
306 307 308 309 310
		  || wdesc == XtWindow (x->edit_widget))
		found = f;
	      /* Match if the window is this frame's menubar.  */
	      else if (lw_window_is_in_menubar (wdesc, x->menubar_widget))
		found = f;
Jan Djärv's avatar
Jan Djärv committed
311
#endif
312 313 314 315
	    }
	  else if (FRAME_X_WINDOW (f) == wdesc)
	    /* A tooltip frame.  */
	    found = f;
316
	}
Jim Blandy's avatar
Jim Blandy committed
317
    }
318

319
  return found;
Jim Blandy's avatar
Jim Blandy committed
320
}
321

322 323 324
/* Likewise, but consider only the menu bar widget.  */

struct frame *
325
x_menubar_window_to_frame (struct x_display_info *dpyinfo, XEvent *event)
326
{
Jan D's avatar
Jan D committed
327
  Window wdesc = event->xany.window;
328 329
  Lisp_Object tail, frame;
  struct frame *f;
330
  struct x_output *x;
331

332 333
  if (wdesc == None) return 0;

334
  for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail))
335
    {
336
      frame = XCAR (tail);
337
      if (!FRAMEP (frame))
338 339
        continue;
      f = XFRAME (frame);
340
      if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
341
	continue;
342
      x = f->output_data.x;
Jan Djärv's avatar
Jan Djärv committed
343
#ifdef USE_GTK
Jan D's avatar
Jan D committed
344 345
      if (x->menubar_widget && xg_event_is_for_menubar (f, event))
        return f;
Jan Djärv's avatar
Jan Djärv committed
346
#else
Jan D's avatar
Jan D committed
347
      /* Match if the window is this frame's menubar.  */
348 349
      if (x->menubar_widget
	  && lw_window_is_in_menubar (wdesc, x->menubar_widget))
350
	return f;
Jan Djärv's avatar
Jan Djärv committed
351
#endif
352 353 354 355
    }
  return 0;
}

356 357 358 359
/* Return the frame whose principal (outermost) window is WDESC.
   If WDESC is some other (smaller) window, we return 0.  */

struct frame *
360
x_top_window_to_frame (struct x_display_info *dpyinfo, int wdesc)
361 362 363
{
  Lisp_Object tail, frame;
  struct frame *f;
364
  struct x_output *x;
365

366 367
  if (wdesc == None) return 0;

368
  for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail))
369
    {
370
      frame = XCAR (tail);
371
      if (!FRAMEP (frame))
372 373
        continue;
      f = XFRAME (frame);
374
      if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
375
	continue;
376
      x = f->output_data.x;
377 378 379 380

      if (x->widget)
	{
	  /* This frame matches if the window is its topmost widget.  */
Jan Djärv's avatar
Jan Djärv committed
381
#ifdef USE_GTK
Kenichi Handa's avatar
Kenichi Handa committed
382
          GtkWidget *gwdesc = xg_win_to_widget (dpyinfo->display, wdesc);
Jan Djärv's avatar
Jan Djärv committed
383 384 385
          if (gwdesc == x->widget)
            return f;
#else
386 387
	  if (wdesc == XtWindow (x->widget))
	    return f;
388 389 390
#if 0 /* I don't know why it did this,
	 but it seems logically wrong,
	 and it causes trouble for MapNotify events.  */
391
	  /* Match if the window is this frame's menubar.  */
392
	  if (x->menubar_widget
393 394
	      && wdesc == XtWindow (x->menubar_widget))
	    return f;
Jan Djärv's avatar
Jan Djärv committed
395
#endif
396
#endif
397 398 399 400
	}
      else if (FRAME_X_WINDOW (f) == wdesc)
	/* Tooltip frame.  */
	return f;
401 402 403
    }
  return 0;
}
Jan Djärv's avatar
Jan Djärv committed
404
#endif /* USE_X_TOOLKIT || USE_GTK */
Jim Blandy's avatar
Jim Blandy committed
405

406 407


408
/* Store the screen positions of frame F into XPTR and YPTR.
409 410 411 412
   These are the positions of the containing window manager window,
   not Emacs's own window.  */

void
413
x_real_positions (FRAME_PTR f, int *xptr, int *yptr)
414
{
415
  int win_x, win_y, outer_x IF_LINT (= 0), outer_y IF_LINT (= 0);
416 417 418
  int real_x = 0, real_y = 0;
  int had_errors = 0;
  Window win = f->output_data.x->parent_desc;
419 420
  Atom actual_type;
  unsigned long actual_size, bytes_remaining;
421
  int rc, actual_format;
422 423 424 425 426
  struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
  long max_len = 400;
  Display *dpy = FRAME_X_DISPLAY (f);
  unsigned char *tmp_data = NULL;
  Atom target_type = XA_CARDINAL;
427

428
  block_input ();
429

430
  x_catch_errors (dpy);
431

432
  if (win == dpyinfo->root_window)
433 434 435 436 437 438 439
    win = FRAME_OUTER_WINDOW (f);

  /* This loop traverses up the containment tree until we hit the root
     window.  Window managers may intersect many windows between our window
     and the root window.  The window we find just before the root window
     should be the outer WM window. */
  for (;;)
440
    {
441 442 443
      Window wm_window, rootw;
      Window *tmp_children;
      unsigned int tmp_nchildren;
444
      int success;
445

446 447
      success = XQueryTree (FRAME_X_DISPLAY (f), win, &rootw,
			    &wm_window, &tmp_children, &tmp_nchildren);
448

449
      had_errors = x_had_errors_p (FRAME_X_DISPLAY (f));
450

451 452 453 454
      /* Don't free tmp_children if XQueryTree failed.  */
      if (! success)
	break;

455
      XFree (tmp_children);
456

457 458
      if (wm_window == rootw || had_errors)
        break;
459

460 461
      win = wm_window;
    }
462

463 464
  if (! had_errors)
    {
465
      unsigned int ign;
466
      Window child, rootw;
467

468 469 470 471 472 473 474 475 476 477 478 479 480 481
      /* Get the real coordinates for the WM window upper left corner */
      XGetGeometry (FRAME_X_DISPLAY (f), win,
                    &rootw, &real_x, &real_y, &ign, &ign, &ign, &ign);

      /* Translate real coordinates to coordinates relative to our
         window.  For our window, the upper left corner is 0, 0.
         Since the upper left corner of the WM window is outside
         our window, win_x and win_y will be negative:

         ------------------          ---> x
         |      title                |
         | -----------------         v y
         | |  our window
      */
482
      XTranslateCoordinates (FRAME_X_DISPLAY (f),
483

484 485
			     /* From-window, to-window.  */
			     FRAME_X_DISPLAY_INFO (f)->root_window,
486
                             FRAME_X_WINDOW (f),
487

488
			     /* From-position, to-position.  */
489
                             real_x, real_y, &win_x, &win_y,
490

491 492
			     /* Child of win.  */
			     &child);
493

494
      if (FRAME_X_WINDOW (f) == FRAME_OUTER_WINDOW (f))
495
	{
496 497
          outer_x = win_x;
          outer_y = win_y;
498
	}
499 500 501
      else
        {
          XTranslateCoordinates (FRAME_X_DISPLAY (f),
502

503 504 505
                                 /* From-window, to-window.  */
                                 FRAME_X_DISPLAY_INFO (f)->root_window,
                                 FRAME_OUTER_WINDOW (f),
506

507 508
                                 /* From-position, to-position.  */
                                 real_x, real_y, &outer_x, &outer_y,
509

510 511
                                 /* Child of win.  */
                                 &child);
512
	}
513

514 515
      had_errors = x_had_errors_p (FRAME_X_DISPLAY (f));
    }
516

517 518 519 520 521 522 523 524 525 526 527 528

  if (dpyinfo->root_window == f->output_data.x->parent_desc)
    {
      /* Try _NET_FRAME_EXTENTS if our parent is the root window.  */
      rc = XGetWindowProperty (dpy, win, dpyinfo->Xatom_net_frame_extents,
                               0, max_len, False, target_type,
                               &actual_type, &actual_format, &actual_size,
                               &bytes_remaining, &tmp_data);

      if (rc == Success && actual_type == target_type && !x_had_errors_p (dpy)
          && actual_size == 4 && actual_format == 32)
        {
529
          unsigned int ign;
530
          Window rootw;
531
          long *fe = (long *)tmp_data;
532 533 534 535 536 537 538 539 540 541 542 543

          XGetGeometry (FRAME_X_DISPLAY (f), win,
                        &rootw, &real_x, &real_y, &ign, &ign, &ign, &ign);
          outer_x = -fe[0];
          outer_y = -fe[2];
          real_x -= fe[0];
          real_y -= fe[2];
        }
    }

  if (tmp_data) XFree (tmp_data);

544
  x_uncatch_errors ();
545

546
  unblock_input ();
547 548

  if (had_errors) return;
549

550 551 552 553 554
  f->x_pixels_diff = -win_x;
  f->y_pixels_diff = -win_y;

  FRAME_X_OUTPUT (f)->x_pixels_outer_diff = -outer_x;
  FRAME_X_OUTPUT (f)->y_pixels_outer_diff = -outer_y;
555 556 557

  *xptr = real_x;
  *yptr = real_y;
558 559
}

Jim Blandy's avatar
Jim Blandy committed
560

561

562 563 564 565

/* Gamma-correct COLOR on frame F.  */

void
566
gamma_correct (struct frame *f, XColor *color)
567 568 569 570 571 572 573 574 575 576
{
  if (f->gamma)
    {
      color->red = pow (color->red / 65535.0, f->gamma) * 65535.0 + 0.5;
      color->green = pow (color->green / 65535.0, f->gamma) * 65535.0 + 0.5;
      color->blue = pow (color->blue / 65535.0, f->gamma) * 65535.0 + 0.5;
    }
}


577
/* Decide if color named COLOR_NAME is valid for use on frame F.  If
578 579
   so, return the RGB values in COLOR.  If ALLOC_P,
   allocate the color.  Value is false if COLOR_NAME is invalid, or
580
   no color could be allocated.  */
581

582
bool
583
x_defined_color (struct frame *f, const char *color_name,
584
		 XColor *color, bool alloc_p)
Jim Blandy's avatar
Jim Blandy committed
585
{
586
  bool success_p = 0;
587 588
  Display *dpy = FRAME_X_DISPLAY (f);
  Colormap cmap = FRAME_X_COLORMAP (f);
Jim Blandy's avatar
Jim Blandy committed
589

590
  block_input ();
591 592 593 594
#ifdef USE_GTK
  success_p = xg_check_special_colors (f, color_name, color);
#endif
  if (!success_p)
595
    success_p = XParseColor (dpy, cmap, color_name, color) != 0;
596 597
  if (success_p && alloc_p)
    success_p = x_alloc_nearest_color (f, cmap, color);
598
  unblock_input ();
Jim Blandy's avatar
Jim Blandy committed
599

600
  return success_p;
Jim Blandy's avatar
Jim Blandy committed
601 602
}

603 604 605 606

/* Return the pixel color value for color COLOR_NAME on frame F.  If F
   is a monochrome frame, return MONO_COLOR regardless of what ARG says.
   Signal an error if color can't be allocated.  */
Jim Blandy's avatar
Jim Blandy committed
607

608
static int
609
x_decode_color (FRAME_PTR f, Lisp_Object color_name, int mono_color)
Jim Blandy's avatar
Jim Blandy committed
610
{
611
  XColor cdef;
Jim Blandy's avatar
Jim Blandy committed
612

613
  CHECK_STRING (color_name);
Jim Blandy's avatar
Jim Blandy committed
614

615 616 617
#if 0 /* Don't do this.  It's wrong when we're not using the default
	 colormap, it makes freeing difficult, and it's probably not
	 an important optimization.  */
618
  if (strcmp (SDATA (color_name), "black") == 0)
619
    return BLACK_PIX_DEFAULT (f);
620
  else if (strcmp (SDATA (color_name), "white") == 0)
621
    return WHITE_PIX_DEFAULT (f);
622
#endif
Jim Blandy's avatar
Jim Blandy committed
623

624
  /* Return MONO_COLOR for monochrome frames.  */
625
  if (FRAME_X_DISPLAY_INFO (f)->n_planes == 1)
626
    return mono_color;
Jim Blandy's avatar
Jim Blandy committed
627

628
  /* x_defined_color is responsible for coping with failures
629
     by looking for a near-miss.  */
630
  if (x_defined_color (f, SSDATA (color_name), &cdef, 1))
631 632
    return cdef.pixel;

633
  signal_error ("Undefined color", color_name);
Jim Blandy's avatar
Jim Blandy committed
634
}
635 636


Jim Blandy's avatar
Jim Blandy committed
637

Gerd Moellmann's avatar
Gerd Moellmann committed
638 639 640 641 642
/* Change the `wait-for-wm' frame parameter of frame F.  OLD_VALUE is
   the previous value of that parameter, NEW_VALUE is the new value.
   See also the comment of wait_for_wm in struct x_output.  */

static void
643
x_set_wait_for_wm (struct frame *f, Lisp_Object new_value, Lisp_Object old_value)
Gerd Moellmann's avatar
Gerd Moellmann committed
644 645 646 647
{
  f->output_data.x->wait_for_wm = !NILP (new_value);
}

648 649 650 651 652 653 654 655 656 657 658
static void
x_set_tool_bar_position (struct frame *f,
                         Lisp_Object new_value,
                         Lisp_Object old_value)
{
  if (! EQ (new_value, Qleft) && ! EQ (new_value, Qright)
      && ! EQ (new_value, Qbottom) && ! EQ (new_value, Qtop))
    return;
  if (EQ (new_value, old_value)) return;

#ifdef USE_GTK
659 660
  xg_change_toolbar_position (f, new_value);
  fset_tool_bar_position (f, new_value);
661 662 663
#endif
}

664 665
#ifdef USE_GTK

666 667
/* Set icon from FILE for frame F.  By using GTK functions the icon
   may be any format that GdkPixbuf knows about, i.e. not just bitmaps.  */
668 669

int
670
xg_set_icon (FRAME_PTR f, Lisp_Object file)
671
{
672 673
  int result = 0;
  Lisp_Object found;
674

675 676 677 678 679 680
  found = x_find_image_file (file);

  if (! NILP (found))
    {
      GdkPixbuf *pixbuf;
      GError *err = NULL;
681
      char *filename = SSDATA (found);
682
      block_input ();
683 684 685 686 687 688 689 690 691 692 693 694 695 696

      pixbuf = gdk_pixbuf_new_from_file (filename, &err);

      if (pixbuf)
	{
	  gtk_window_set_icon (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)),
			       pixbuf);
	  g_object_unref (pixbuf);

	  result = 1;
	}
      else
	g_error_free (err);

697
      unblock_input ();
698 699 700
    }

  return result;
701
}
702 703

int
704
xg_set_icon_from_xpm_data (FRAME_PTR f, const char **data)
705
{
706
  GdkPixbuf *pixbuf = gdk_pixbuf_new_from_xpm_data (data);
707 708

  if (!pixbuf)
709
    return 0;
710

711
  gtk_window_set_icon (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)), pixbuf);
712 713 714
  g_object_unref (pixbuf);
  return 1;
}
715 716
#endif /* USE_GTK */

Gerd Moellmann's avatar
Gerd Moellmann committed
717

Jim Blandy's avatar
Jim Blandy committed
718
/* Functions called only from `x_set_frame_param'
Jim Blandy's avatar
Jim Blandy committed
719 720
   to set individual parameters.

721
   If FRAME_X_WINDOW (f) is 0,
Jim Blandy's avatar
Jim Blandy committed
722
   the frame is being created and its X-window does not exist yet.
Jim Blandy's avatar
Jim Blandy committed
723 724 725
   In that case, just record the parameter's new value
   in the standard place; do not attempt to change the window.  */

726
static void
727
x_set_foreground_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
Jim Blandy's avatar
Jim Blandy committed
728
{
729 730
  struct x_output *x = f->output_data.x;
  unsigned long fg, old_fg;
731

732
  fg = x_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
Karoly Lorentey's avatar
Karoly Lorentey committed
733 734
  old_fg = FRAME_FOREGROUND_PIXEL (f);
  FRAME_FOREGROUND_PIXEL (f) = fg;
735

736
  if (FRAME_X_WINDOW (f) != 0)
Jim Blandy's avatar
Jim Blandy committed
737
    {
738
      Display *dpy = FRAME_X_DISPLAY (f);
739

740
      block_input ();
741 742
      XSetForeground (dpy, x->normal_gc, fg);
      XSetBackground (dpy, x->reverse_gc, fg);
743

744 745 746 747 748 749
      if (x->cursor_pixel == old_fg)
	{
	  unload_color (f, x->cursor_pixel);
	  x->cursor_pixel = x_copy_color (f, fg);
	  XSetBackground (dpy, x->cursor_gc, x->cursor_pixel);
	}
750

751
      unblock_input ();
752

753
      update_face_from_frame_parameter (f, Qforeground_color, arg);
754