summaryrefslogtreecommitdiff
path: root/gdk/x11/gdkmain-x11.c
blob: e40866751eba1171ea9fb95eec4b0abb89a204a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
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
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
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
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
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
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
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
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
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
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
/* GDK - The GIMP Drawing Kit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include "config.h"

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>

#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* HAVE_SYS_SELECT_H_ */

#define XLIB_ILLEGAL_ACCESS
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xos.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>

#include "gdk.h"

#include "gdkprivate-x11.h"
#include "gdkinternals.h"
#include "gdkinputprivate.h"
#include <pango/pangox.h>

typedef struct _GdkPredicate  GdkPredicate;
typedef struct _GdkErrorTrap  GdkErrorTrap;

struct _GdkPredicate
{
  GdkEventFunc func;
  gpointer data;
};

struct _GdkErrorTrap
{
  gint error_warnings;
  gint error_code;
};

/* 
 * Private function declarations
 */

#ifndef HAVE_XCONVERTCASE
static void	 gdkx_XConvertCase	(KeySym	       symbol,
					 KeySym	      *lower,
					 KeySym	      *upper);
#define XConvertCase gdkx_XConvertCase
#endif

static int	    gdk_x_error			 (Display     *display, 
						  XErrorEvent *error);
static int	    gdk_x_io_error		 (Display     *display);

/* Private variable declarations
 */
static int gdk_initialized = 0;			    /* 1 if the library is initialized,
						     * 0 otherwise.
						     */

static gint autorepeat;
static gboolean gdk_synchronize = FALSE;

#ifdef G_ENABLE_DEBUG
static const GDebugKey gdk_debug_keys[] = {
  {"events",	    GDK_DEBUG_EVENTS},
  {"misc",	    GDK_DEBUG_MISC},
  {"dnd",	    GDK_DEBUG_DND},
  {"color-context", GDK_DEBUG_COLOR_CONTEXT},
  {"xim",	    GDK_DEBUG_XIM}
};

static const int gdk_ndebug_keys = sizeof(gdk_debug_keys)/sizeof(GDebugKey);

#endif /* G_ENABLE_DEBUG */

static void
gdk_arg_xim_preedit_cb (const gchar *arg, const gchar *value, gpointer cb_data)
{
  if (strcmp ("none", value) == 0)
    gdk_im_set_best_style (GDK_IM_PREEDIT_NONE);
  else if (strcmp ("nothing", value) == 0)
    gdk_im_set_best_style (GDK_IM_PREEDIT_NOTHING);
  else if (strcmp ("area", value) == 0)
    gdk_im_set_best_style (GDK_IM_PREEDIT_AREA);
  else if (strcmp ("position", value) == 0)
    gdk_im_set_best_style (GDK_IM_PREEDIT_POSITION);
  else if (strcmp ("callbacks", value) == 0)
    gdk_im_set_best_style (GDK_IM_PREEDIT_CALLBACKS);
}

static void
gdk_arg_xim_status_cb (const gchar *arg, const gchar *value, gpointer cb_data)
{
  if (strcmp ("none", value) == 0)
    gdk_im_set_best_style (GDK_IM_STATUS_NONE);
  else if (strcmp ("nothing", value) == 0)
    gdk_im_set_best_style (GDK_IM_STATUS_NOTHING);
  else if (strcmp ("area", value) == 0)
    gdk_im_set_best_style (GDK_IM_STATUS_AREA);
  else if (strcmp ("callbacks", value) == 0)
    gdk_im_set_best_style (GDK_IM_STATUS_CALLBACKS);
}

GdkArgDesc _gdk_windowing_args[] = {
  { "display",     GDK_ARG_STRING,   &gdk_display_name,    (GdkArgFunc)NULL   },
  { "sync",        GDK_ARG_BOOL,     &gdk_synchronize,     (GdkArgFunc)NULL   },
  { "no-xshm",     GDK_ARG_NOBOOL,   &gdk_use_xshm,        (GdkArgFunc)NULL   },
  { "class",       GDK_ARG_STRING,   &gdk_progclass,       (GdkArgFunc)NULL   },
  { "gxid-host",   GDK_ARG_STRING,   &gdk_input_gxid_host, (GdkArgFunc)NULL   },
  { "gxid-port",   GDK_ARG_INT,      &gdk_input_gxid_port, (GdkArgFunc)NULL   },
  { "xim-preedit", GDK_ARG_CALLBACK, NULL,                 gdk_arg_xim_preedit_cb },
  { "xim-status",  GDK_ARG_CALLBACK, NULL,                 gdk_arg_xim_status_cb  },
  { NULL }
};

gboolean
_gdk_windowing_init_check (int argc, char **argv)
{
  XKeyboardState keyboard_state;
  XClassHint *class_hint;
  
  XSetErrorHandler (gdk_x_error);
  XSetIOErrorHandler (gdk_x_io_error);
  
  gdk_display = XOpenDisplay (gdk_display_name);
  if (!gdk_display)
    return FALSE;
  
  if (gdk_synchronize)
    XSynchronize (gdk_display, True);
  
  gdk_screen = DefaultScreen (gdk_display);
  gdk_root_window = RootWindow (gdk_display, gdk_screen);
  
  gdk_leader_window = XCreateSimpleWindow(gdk_display, gdk_root_window,
					  10, 10, 10, 10, 0, 0 , 0);
  class_hint = XAllocClassHint();
  class_hint->res_name = g_get_prgname ();
  if (gdk_progclass == NULL)
    {
      gdk_progclass = g_strdup (g_get_prgname ());
      gdk_progclass[0] = toupper (gdk_progclass[0]);
    }
  class_hint->res_class = gdk_progclass;
  XmbSetWMProperties (gdk_display, gdk_leader_window,
                      NULL, NULL, argv, argc, 
                      NULL, NULL, class_hint);
  XFree (class_hint);
  
  gdk_wm_delete_window = XInternAtom (gdk_display, "WM_DELETE_WINDOW", False);
  gdk_wm_take_focus = XInternAtom (gdk_display, "WM_TAKE_FOCUS", False);
  gdk_wm_protocols = XInternAtom (gdk_display, "WM_PROTOCOLS", False);
  gdk_wm_window_protocols[0] = gdk_wm_delete_window;
  gdk_wm_window_protocols[1] = gdk_wm_take_focus;
  gdk_selection_property = XInternAtom (gdk_display, "GDK_SELECTION", False);
  
  XGetKeyboardControl (gdk_display, &keyboard_state);
  autorepeat = keyboard_state.global_auto_repeat;
  
  return TRUE;
}

void
gdk_set_use_xshm (gboolean use_xshm)
{
  gdk_use_xshm = use_xshm;
}

gboolean
gdk_get_use_xshm (void)
{
  return gdk_use_xshm;
}

static GdkGrabStatus
gdk_x11_convert_grab_status (gint status)
{
  switch (status)
    {
    case GrabSuccess:
      return GDK_GRAB_SUCCESS;
    case AlreadyGrabbed:
      return GDK_GRAB_ALREADY_GRABBED;
    case GrabInvalidTime:
      return GDK_GRAB_INVALID_TIME;
    case GrabNotViewable:
      return GDK_GRAB_NOT_VIEWABLE;
    case GrabFrozen:
      return GDK_GRAB_FROZEN;
    }

  g_assert_not_reached();
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_grab
 *
 *   Grabs the pointer to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "event_mask" masks only interesting events
 *   "confine_to" limits the cursor movement to the specified window
 *   "cursor" changes the cursor for the duration of the grab
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_pointer_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_pointer_grab (GdkWindow *	  window,
		  gboolean	  owner_events,
		  GdkEventMask	  event_mask,
		  GdkWindow *	  confine_to,
		  GdkCursor *	  cursor,
		  guint32	  time)
{
  gint return_val;
  GdkCursorPrivate *cursor_private;
  guint xevent_mask;
  Window xwindow;
  Window xconfine_to;
  Cursor xcursor;
  int i;
  
  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
  g_return_val_if_fail (confine_to == NULL || GDK_IS_WINDOW (confine_to), 0);
  
  cursor_private = (GdkCursorPrivate*) cursor;
  
  xwindow = GDK_WINDOW_XID (window);
  
  if (!confine_to || GDK_WINDOW_DESTROYED (confine_to))
    xconfine_to = None;
  else
    xconfine_to = GDK_WINDOW_XID (confine_to);
  
  if (!cursor)
    xcursor = None;
  else
    xcursor = cursor_private->xcursor;
  
  
  xevent_mask = 0;
  for (i = 0; i < gdk_nevent_masks; i++)
    {
      if (event_mask & (1 << (i + 1)))
	xevent_mask |= gdk_event_mask_table[i];
    }
  
  return_val = _gdk_input_grab_pointer (window,
					owner_events,
					event_mask,
					confine_to,
					time);

  if (return_val == GrabSuccess)
    {
      if (!GDK_WINDOW_DESTROYED (window))
	return_val = XGrabPointer (GDK_WINDOW_XDISPLAY (window),
				   xwindow,
				   owner_events,
				   xevent_mask,
				   GrabModeAsync, GrabModeAsync,
				   xconfine_to,
				   xcursor,
				   time);
      else
	return_val = AlreadyGrabbed;
    }
  
  if (return_val == GrabSuccess)
    gdk_xgrab_window = (GdkWindowObject *)window;

  return gdk_x11_convert_grab_status (return_val);
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_ungrab
 *
 *   Releases any pointer grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_pointer_ungrab (guint32 time)
{
  _gdk_input_ungrab_pointer (time);
  
  XUngrabPointer (gdk_display, time);
  gdk_xgrab_window = NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_is_grabbed
 *
 *   Tell wether there is an active x pointer grab in effect
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gboolean
gdk_pointer_is_grabbed (void)
{
  return gdk_xgrab_window != NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_grab
 *
 *   Grabs the keyboard to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_keyboard_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_keyboard_grab (GdkWindow *	   window,
		   gboolean	   owner_events,
		   guint32	   time)
{
  gint return_val;
  
  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
  
  if (!GDK_WINDOW_DESTROYED (window))
    return_val = XGrabKeyboard (GDK_WINDOW_XDISPLAY (window),
				GDK_WINDOW_XID (window),
				owner_events,
				GrabModeAsync, GrabModeAsync,
				time);
  else
    return_val = AlreadyGrabbed;

  return gdk_x11_convert_grab_status (return_val);
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_ungrab
 *
 *   Releases any keyboard grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_keyboard_ungrab (guint32 time)
{
  XUngrabKeyboard (gdk_display, time);
}

/*
 *--------------------------------------------------------------
 * gdk_screen_width
 *
 *   Return the width of the screen.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_width (void)
{
  gint return_val;
  
  return_val = DisplayWidth (gdk_display, gdk_screen);
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_height
 *
 *   Return the height of the screen.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_height (void)
{
  gint return_val;
  
  return_val = DisplayHeight (gdk_display, gdk_screen);
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_width_mm
 *
 *   Return the width of the screen in millimeters.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_width_mm (void)
{
  gint return_val;
  
  return_val = DisplayWidthMM (gdk_display, gdk_screen);
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_height
 *
 *   Return the height of the screen in millimeters.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_height_mm (void)
{
  gint return_val;
  
  return_val = DisplayHeightMM (gdk_display, gdk_screen);
  
  return return_val;
}

/*
 *--------------------------------------------------------------
 * gdk_set_sm_client_id
 *
 *   Set the SM_CLIENT_ID property on the WM_CLIENT_LEADER window
 *   so that the window manager can save our state using the
 *   X11R6 ICCCM session management protocol. A NULL value should 
 *   be set following disconnection from the session manager to
 *   remove the SM_CLIENT_ID property.
 *
 * Arguments:
 * 
 *   "sm_client_id" specifies the client id assigned to us by the
 *   session manager or NULL to remove the property.
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_set_sm_client_id (const gchar* sm_client_id)
{
  if (sm_client_id && strcmp (sm_client_id, ""))
    {
      XChangeProperty (gdk_display, gdk_leader_window,
	   	       gdk_atom_intern ("SM_CLIENT_ID", FALSE),
		       XA_STRING, 8, PropModeReplace,
		       sm_client_id, strlen(sm_client_id));
    }
  else
     XDeleteProperty (gdk_display, gdk_leader_window,
	   	      gdk_atom_intern ("SM_CLIENT_ID", FALSE));
}

void
gdk_key_repeat_disable (void)
{
  XAutoRepeatOff (gdk_display);
}

void
gdk_key_repeat_restore (void)
{
  if (autorepeat)
    XAutoRepeatOn (gdk_display);
  else
    XAutoRepeatOff (gdk_display);
}


void
gdk_beep (void)
{
  XBell(gdk_display, 0);
}

void
gdk_windowing_exit (void)
{
  pango_x_shutdown_display (gdk_display);
  
  XCloseDisplay (gdk_display);
}

/*
 *--------------------------------------------------------------
 * gdk_x_error
 *
 *   The X error handling routine.
 *
 * Arguments:
 *   "display" is the X display the error orignated from.
 *   "error" is the XErrorEvent that we are handling.
 *
 * Results:
 *   Either we were expecting some sort of error to occur,
 *   in which case we set the "gdk_error_code" flag, or this
 *   error was unexpected, in which case we will print an
 *   error message and exit. (Since trying to continue will
 *   most likely simply lead to more errors).
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

static int
gdk_x_error (Display	 *display,
	     XErrorEvent *error)
{
  if (error->error_code)
    {
      if (gdk_error_warnings)
	{
	  char buf[64];
	  
	  XGetErrorText (display, error->error_code, buf, 63);

#ifdef G_ENABLE_DEBUG	  
	  g_error ("%s\n  serial %ld error_code %d request_code %d minor_code %d\n", 
		   buf, 
		   error->serial, 
		   error->error_code, 
		   error->request_code,
		   error->minor_code);
#else /* !G_ENABLE_DEBUG */
	  fprintf (stderr, "Gdk-ERROR **: %s\n  serial %ld error_code %d request_code %d minor_code %d\n",
		   buf, 
		   error->serial, 
		   error->error_code, 
		   error->request_code,
		   error->minor_code);

	  exit(1);
#endif /* G_ENABLE_DEBUG */
	}
      gdk_error_code = error->error_code;
    }
  
  return 0;
}

/*
 *--------------------------------------------------------------
 * gdk_x_io_error
 *
 *   The X I/O error handling routine.
 *
 * Arguments:
 *   "display" is the X display the error orignated from.
 *
 * Results:
 *   An X I/O error basically means we lost our connection
 *   to the X server. There is not much we can do to
 *   continue, so simply print an error message and exit.
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

static int
gdk_x_io_error (Display *display)
{
  /* This is basically modelled after the code in XLib. We need
   * an explicit error handler here, so we can disable our atexit()
   * which would otherwise cause a nice segfault.
   * We fprintf(stderr, instead of g_warning() because g_warning()
   * could possibly be redirected to a dialog
   */
  if (errno == EPIPE)
    {
      fprintf (stderr, "Gdk-ERROR **: X connection to %s broken (explicit kill or server shutdown).\n", gdk_display ? DisplayString (gdk_display) : gdk_get_display());
    }
  else
    {
      fprintf (stderr, "Gdk-ERROR **: Fatal IO error %d (%s) on X server %s.\n",
	       errno, g_strerror (errno),
	       gdk_display ? DisplayString (gdk_display) : gdk_get_display());
    }

  /* Disable the atexit shutdown for GDK */
  gdk_initialized = 0;
  
  exit(1);
}

gchar *
gdk_get_display (void)
{
  return (gchar *)XDisplayName (gdk_display_name);
}

gint 
gdk_send_xevent (Window window, gboolean propagate, glong event_mask,
		 XEvent *event_send)
{
  Status result;
  gint old_warnings = gdk_error_warnings;
  
  gdk_error_code = 0;
  
  gdk_error_warnings = 0;
  result = XSendEvent (gdk_display, window, propagate, event_mask, event_send);
  XSync (gdk_display, False);
  gdk_error_warnings = old_warnings;
  
  return result && !gdk_error_code;
}

gchar*
gdk_keyval_name (guint	      keyval)
{
  return XKeysymToString (keyval);
}

guint
gdk_keyval_from_name (const gchar *keyval_name)
{
  g_return_val_if_fail (keyval_name != NULL, 0);
  
  return XStringToKeysym (keyval_name);
}

#ifdef HAVE_XCONVERTCASE
void
gdk_keyval_convert_case (guint symbol,
			 guint *lower,
			 guint *upper)
{
  KeySym xlower = 0;
  KeySym xupper = 0;

  if (symbol)
    XConvertCase (symbol, &xlower, &xupper);

  if (lower)
    *lower = xlower;
  if (upper)
    *upper = xupper;
}  
#endif HAVE_XCONVERTCASE