screen.c 49.8 KB
Newer Older
rhp's avatar
...  
rhp committed
1
2
3
/* Metacity X screen handler */

/* 
Havoc Pennington's avatar
Havoc Pennington committed
4
5
6
 * Copyright (C) 2001, 2002 Havoc Pennington
 * Copyright (C) 2002 Red Hat Inc.
 * Some ICCCM manager selection code derived from fvwm2,
7
 * Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
rhp's avatar
...  
rhp committed
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
rhp's avatar
...  
rhp committed
24

25
#include <config.h>
rhp's avatar
...  
rhp committed
26
27
#include "screen.h"
#include "util.h"
rhp's avatar
...  
rhp committed
28
#include "errors.h"
rhp's avatar
...  
rhp committed
29
#include "window.h"
rhp's avatar
...  
rhp committed
30
#include "frame.h"
31
#include "prefs.h"
rhp's avatar
...  
rhp committed
32
33
#include "workspace.h"
#include "keybindings.h"
rhp's avatar
...  
rhp committed
34
#include "stack.h"
35
#include "xprops.h"
rhp's avatar
...  
rhp committed
36

37
38
39
40
#ifdef HAVE_SOLARIS_XINERAMA
#include <X11/extensions/xinerama.h>
#endif
#ifdef HAVE_XFREE_XINERAMA
41
42
43
#include <X11/extensions/Xinerama.h>
#endif

rhp's avatar
...  
rhp committed
44
#include <X11/Xatom.h>
rhp's avatar
...  
rhp committed
45
46
#include <locale.h>
#include <string.h>
Havoc Pennington's avatar
Havoc Pennington committed
47
#include <stdio.h>
rhp's avatar
...  
rhp committed
48

rhp's avatar
...  
rhp committed
49
50
51
static char* get_screen_name (MetaDisplay *display,
                              int          number);

52
static void update_num_workspaces  (MetaScreen *screen);
53
static void update_focus_mode      (MetaScreen *screen);
54
55
static void prefs_changed_callback (MetaPreference pref,
                                    gpointer       data);
rhp's avatar
...  
rhp committed
56

57
58
59
60
61
#ifdef HAVE_STARTUP_NOTIFICATION
static void meta_screen_sn_event   (SnMonitorEvent *event,
                                    void           *user_data);
#endif

rhp's avatar
...  
rhp committed
62
63
64
65
66
static int
set_wm_check_hint (MetaScreen *screen)
{
  unsigned long data[1];

rhp's avatar
...  
rhp committed
67
68
  g_return_val_if_fail (screen->display->leader_window != None, 0);
  
rhp's avatar
...  
rhp committed
69
70
71
72
73
74
  data[0] = screen->display->leader_window;

  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_supporting_wm_check,
                   XA_WINDOW,
                   32, PropModeReplace, (guchar*) data, 1);
rhp's avatar
...  
rhp committed
75

76
77
78
79
80
81
82
83
84
85
  /* Legacy GNOME hint (uses cardinal, dunno why) */

  /* do this after setting up window fully, to avoid races
   * with clients listening to property notify on root.
   */
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_win_supporting_wm_check,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 1);
  
rhp's avatar
...  
rhp committed
86
87
88
89
90
91
  return Success;
}

static int
set_supported_hint (MetaScreen *screen)
{
Havoc Pennington's avatar
Havoc Pennington committed
92
#define N_SUPPORTED 44
rhp's avatar
...  
rhp committed
93
#define N_WIN_SUPPORTED 1
rhp's avatar
...  
rhp committed
94
  Atom atoms[N_SUPPORTED];
rhp's avatar
...  
rhp committed
95
  
rhp's avatar
...  
rhp committed
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
  atoms[0] = screen->display->atom_net_wm_name;
  atoms[1] = screen->display->atom_net_close_window;
  atoms[2] = screen->display->atom_net_wm_state;
  atoms[3] = screen->display->atom_net_wm_state_shaded;
  atoms[4] = screen->display->atom_net_wm_state_maximized_vert;
  atoms[5] = screen->display->atom_net_wm_state_maximized_horz;
  atoms[6] = screen->display->atom_net_wm_desktop;
  atoms[7] = screen->display->atom_net_number_of_desktops;
  atoms[8] = screen->display->atom_net_current_desktop;
  atoms[9] = screen->display->atom_net_wm_window_type;
  atoms[10] = screen->display->atom_net_wm_window_type_desktop;
  atoms[11] = screen->display->atom_net_wm_window_type_dock;
  atoms[12] = screen->display->atom_net_wm_window_type_toolbar;
  atoms[13] = screen->display->atom_net_wm_window_type_menu;
  atoms[14] = screen->display->atom_net_wm_window_type_dialog;
  atoms[15] = screen->display->atom_net_wm_window_type_normal;
  atoms[16] = screen->display->atom_net_wm_state_modal;
rhp's avatar
...  
rhp committed
113
114
  atoms[17] = screen->display->atom_net_client_list;
  atoms[18] = screen->display->atom_net_client_list_stacking;
rhp's avatar
...  
rhp committed
115
116
  atoms[19] = screen->display->atom_net_wm_state_skip_taskbar;
  atoms[20] = screen->display->atom_net_wm_state_skip_pager;
Havoc Pennington's avatar
Havoc Pennington committed
117
  atoms[21] = screen->display->atom_net_wm_icon;
118
  atoms[22] = screen->display->atom_net_wm_moveresize;
119
  atoms[23] = screen->display->atom_net_wm_state_hidden;
120
121
  atoms[24] = screen->display->atom_net_wm_window_type_utility;
  atoms[25] = screen->display->atom_net_wm_window_type_splashscreen;
122
  atoms[26] = screen->display->atom_net_wm_state_fullscreen;
123
  atoms[27] = screen->display->atom_net_wm_ping;
124
  atoms[28] = screen->display->atom_net_active_window;
125
  atoms[29] = screen->display->atom_net_workarea;
126
  atoms[30] = screen->display->atom_net_showing_desktop;
127
  atoms[31] = screen->display->atom_net_desktop_layout;
Havoc Pennington's avatar
Havoc Pennington committed
128
  atoms[32] = screen->display->atom_net_desktop_names;
129
130
131
132
133
134
135
136
137
  atoms[33] = screen->display->atom_net_wm_allowed_actions;
  atoms[34] = screen->display->atom_net_wm_action_move;
  atoms[35] = screen->display->atom_net_wm_action_resize;
  atoms[36] = screen->display->atom_net_wm_action_shade;
  atoms[37] = screen->display->atom_net_wm_action_stick;
  atoms[38] = screen->display->atom_net_wm_action_maximize_horz;
  atoms[39] = screen->display->atom_net_wm_action_maximize_vert;
  atoms[40] = screen->display->atom_net_wm_action_change_desktop;
  atoms[41] = screen->display->atom_net_wm_action_close;
Havoc Pennington's avatar
Havoc Pennington committed
138
139
  atoms[42] = screen->display->atom_net_wm_state_above;
  atoms[43] = screen->display->atom_net_wm_state_below;
rhp's avatar
...  
rhp committed
140
141
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
142
                   screen->display->atom_net_supported,
rhp's avatar
...  
rhp committed
143
144
145
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) atoms, N_SUPPORTED);

rhp's avatar
...  
rhp committed
146
147
148
149
150
151
152
153
  /* Set legacy GNOME hints */
  atoms[0] = screen->display->atom_win_layer;
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_win_protocols,
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) atoms, N_WIN_SUPPORTED);
  
rhp's avatar
...  
rhp committed
154
155
156
157
  return Success;
#undef N_SUPPORTED
}

Havoc Pennington's avatar
Havoc Pennington committed
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
static int
set_wm_icon_size_hint (MetaScreen *screen)
{
#define N_VALS 6
  gulong vals[N_VALS];

  /* min width, min height, max w, max h, width inc, height inc */
  vals[0] = META_ICON_WIDTH;
  vals[1] = META_ICON_HEIGHT;
  vals[2] = META_ICON_WIDTH;
  vals[3] = META_ICON_HEIGHT;
  vals[4] = 0;
  vals[5] = 0;
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_wm_icon_size,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) vals, N_VALS);
  
  return Success;
#undef N_VALS
}

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
static void
reload_xinerama_infos (MetaScreen *screen)
{
  MetaDisplay *display;

  display = screen->display;
  
  if (screen->xinerama_infos)
    g_free (screen->xinerama_infos);
  
  screen->xinerama_infos = NULL;
  screen->n_xinerama_infos = 0;
  screen->last_xinerama_index = 0;

  screen->display->xinerama_cache_invalidated = TRUE;
  
#ifdef HAVE_XFREE_XINERAMA
  if (XineramaIsActive (display->xdisplay))
    {
      XineramaScreenInfo *infos;
      int n_infos;
      int i;
      
      n_infos = 0;
      infos = XineramaQueryScreens (display->xdisplay, &n_infos);

      meta_topic (META_DEBUG_XINERAMA,
                  "Found %d Xinerama screens on display %s\n",
                  n_infos, display->name);

      if (n_infos > 0)
        {
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_infos);
          screen->n_xinerama_infos = n_infos;
          
          i = 0;
          while (i < n_infos)
            {
              screen->xinerama_infos[i].number = infos[i].screen_number;
              screen->xinerama_infos[i].x_origin = infos[i].x_org;
              screen->xinerama_infos[i].y_origin = infos[i].y_org;
              screen->xinerama_infos[i].width = infos[i].width;
              screen->xinerama_infos[i].height = infos[i].height;

              meta_topic (META_DEBUG_XINERAMA,
                          "Xinerama %d is %d,%d %d x %d\n",
                          screen->xinerama_infos[i].number,
                          screen->xinerama_infos[i].x_origin,
                          screen->xinerama_infos[i].y_origin,
                          screen->xinerama_infos[i].width,
                          screen->xinerama_infos[i].height);              
              
              ++i;
            }
        }
      
      meta_XFree (infos);
    }
  else
    {
      meta_topic (META_DEBUG_XINERAMA,
                  "No XFree86 Xinerama extension or XFree86 Xinerama inactive on display %s\n",
                  display->name);
    }
#else
  meta_topic (META_DEBUG_XINERAMA,
              "Metacity compiled without XFree86 Xinerama support\n");
#endif /* HAVE_XFREE_XINERAMA */

#ifdef HAVE_SOLARIS_XINERAMA
  /* This code from GDK, Copyright (C) 2002 Sun Microsystems */
  if (screen->n_xinerama_infos == 0 &&
      XineramaGetState (screen->display->xdisplay,
                        screen->number))
    {
      XRectangle monitors[MAXFRAMEBUFFERS];
      unsigned char hints[16];
      int result;
      int n_monitors;
      int i;

      n_monitors = 0;
263
      result = XineramaGetInfo (screen->display->xdisplay,
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
                                screen->number,
				monitors, hints,
                                &n_monitors);
      /* Yes I know it should be Success but the current implementation 
       * returns the num of monitor
       */
      if (result > 0)
	{
          g_assert (n_monitors > 0);
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_monitors);
          screen->n_xinerama_infos = n_monitors;
          
          i = 0;
          while (i < n_monitors)
            {
              screen->xinerama_infos[i].number = i;
              screen->xinerama_infos[i].x_origin = monitors[i].x;
	      screen->xinerama_infos[i].y_origin = monitors[i].y;
	      screen->xinerama_infos[i].width = monitors[i].width;
	      screen->xinerama_infos[i].height = monitors[i].height;

              meta_topic (META_DEBUG_XINERAMA,
                          "Xinerama %d is %d,%d %d x %d\n",
                          screen->xinerama_infos[i].number,
                          screen->xinerama_infos[i].x_origin,
                          screen->xinerama_infos[i].y_origin,
                          screen->xinerama_infos[i].width,
                          screen->xinerama_infos[i].height);              
              
              ++i;
            }
	}
    }
  else if (screen->n_xinerama_infos == 0)
    {
      meta_topic (META_DEBUG_XINERAMA,
                  "No Solaris Xinerama extension or Solaris Xinerama inactive on display %s\n",
                  display->name);
    }
#else
  meta_topic (META_DEBUG_XINERAMA,
              "Metacity compiled without Solaris Xinerama support\n");
#endif /* HAVE_SOLARIS_XINERAMA */

  
  /* If no Xinerama, fill in the single screen info so
   * we can use the field unconditionally
   */
  if (screen->n_xinerama_infos == 0)
    {
      if (g_getenv ("METACITY_DEBUG_XINERAMA"))
        {
          meta_topic (META_DEBUG_XINERAMA,
                      "Pretending a single monitor has two Xinerama screens\n");
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 2);
          screen->n_xinerama_infos = 2;
          
          screen->xinerama_infos[0].number = 0;
          screen->xinerama_infos[0].x_origin = 0;
          screen->xinerama_infos[0].y_origin = 0;
          screen->xinerama_infos[0].width = screen->width / 2;
          screen->xinerama_infos[0].height = screen->height;

          screen->xinerama_infos[1].number = 1;
          screen->xinerama_infos[1].x_origin = screen->width / 2;
          screen->xinerama_infos[1].y_origin = 0;
          screen->xinerama_infos[1].width = screen->width / 2 + screen->width % 2;
          screen->xinerama_infos[1].height = screen->height;
        }
      else
        {
          meta_topic (META_DEBUG_XINERAMA,
                      "No Xinerama screens, using default screen info\n");
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 1);
          screen->n_xinerama_infos = 1;
          
          screen->xinerama_infos[0].number = 0;
          screen->xinerama_infos[0].x_origin = 0;
          screen->xinerama_infos[0].y_origin = 0;
          screen->xinerama_infos[0].width = screen->width;
          screen->xinerama_infos[0].height = screen->height;
        }
    }

  g_assert (screen->n_xinerama_infos > 0);
  g_assert (screen->xinerama_infos != NULL);
}

rhp's avatar
...  
rhp committed
355
356
357
358
359
MetaScreen*
meta_screen_new (MetaDisplay *display,
                 int          number)
{
  MetaScreen *screen;
rhp's avatar
...  
rhp committed
360
361
  Window xroot;
  Display *xdisplay;
362
  XWindowAttributes attr;
Havoc Pennington's avatar
Havoc Pennington committed
363
364
365
366
367
368
369
370
  Window new_wm_sn_owner;
  Window current_wm_sn_owner;
  gboolean replace_current_wm;
  Atom wm_sn_atom;
  char buf[128];
  Time manager_timestamp;
  
  replace_current_wm = meta_get_replace_current_wm ();
rhp's avatar
...  
rhp committed
371
  
rhp's avatar
...  
rhp committed
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
  /* Only display->name, display->xdisplay, and display->error_traps
   * can really be used in this function, since normally screens are
   * created from the MetaDisplay constructor
   */
  
  xdisplay = display->xdisplay;
  
  meta_verbose ("Trying screen %d on display '%s'\n",
                number, display->name);

  xroot = RootWindow (xdisplay, number);

  /* FVWM checks for None here, I don't know if this
   * ever actually happens
   */
  if (xroot == None)
    {
      meta_warning (_("Screen %d on display '%s' is invalid\n"),
                    number, display->name);
      return NULL;
    }

Havoc Pennington's avatar
Havoc Pennington committed
394
395
396
397
398
399
400
401
402
403
404
  sprintf (buf, "WM_S%d", number);
  wm_sn_atom = XInternAtom (xdisplay, buf, False);  
  
  current_wm_sn_owner = XGetSelectionOwner (xdisplay, wm_sn_atom);

  if (current_wm_sn_owner != None)
    {
      XSetWindowAttributes attrs;
      
      if (!replace_current_wm)
        {
405
          meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"),
Havoc Pennington's avatar
Havoc Pennington committed
406
407
408
409
410
411
                        number, display->name);

          return NULL;
        }

      /* We want to find out when the current selection owner dies */
412
      meta_error_trap_push_with_return (display);
Havoc Pennington's avatar
Havoc Pennington committed
413
414
415
      attrs.event_mask = StructureNotifyMask;
      XChangeWindowAttributes (xdisplay,
                               current_wm_sn_owner, CWEventMask, &attrs);
416
      if (meta_error_trap_pop_with_return (display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
417
418
419
        current_wm_sn_owner = None; /* don't wait for it to die later on */
    }

420
  new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
Havoc Pennington's avatar
Havoc Pennington committed
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

  {
    /* Generate a timestamp */
    XSetWindowAttributes attrs;
    XEvent event;

    attrs.event_mask = PropertyChangeMask;
    XChangeWindowAttributes (xdisplay, new_wm_sn_owner, CWEventMask, &attrs);
    
    XChangeProperty (xdisplay,
                     new_wm_sn_owner, XA_WM_CLASS, XA_STRING, 8,
                     PropModeAppend, NULL, 0);
    XWindowEvent (xdisplay, new_wm_sn_owner, PropertyChangeMask, &event);
    attrs.event_mask = NoEventMask;
    XChangeWindowAttributes (display->xdisplay,
                             new_wm_sn_owner, CWEventMask, &attrs);

    manager_timestamp = event.xproperty.time;
  }
  
  XSetSelectionOwner (xdisplay, wm_sn_atom, new_wm_sn_owner,
                      manager_timestamp);

  if (XGetSelectionOwner (xdisplay, wm_sn_atom) != new_wm_sn_owner)
    {
      meta_warning (_("Could not acquire window manager selection on screen %d display \"%s\"\n"),
                    number, display->name);

      XDestroyWindow (xdisplay, new_wm_sn_owner);
      
      return NULL;
    }
  
  {
    /* Send client message indicating that we are now the WM */
    XClientMessageEvent ev;
    
    ev.type = ClientMessage;
    ev.window = xroot;
    ev.message_type = display->atom_manager;
    ev.format = 32;
    ev.data.l[0] = manager_timestamp;
    ev.data.l[1] = wm_sn_atom;

    XSendEvent (xdisplay, xroot, False, StructureNotifyMask, (XEvent*)&ev);
  }

  /* Wait for old window manager to go away */
  if (current_wm_sn_owner != None)
    {
      XEvent event;

      /* We sort of block infinitely here which is probably lame. */
      
      meta_verbose ("Waiting for old window manager to exit\n");
      do
        {
          XWindowEvent (xdisplay, current_wm_sn_owner,
                        StructureNotifyMask, &event);
        }
      while (event.type != DestroyNotify);
    }
  
  /* select our root window events */
485
  meta_error_trap_push_with_return (display);
486
487
488
489
490

  /* We need to or with the existing event mask since
   * gtk+ may be interested in other events.
   */
  XGetWindowAttributes (xdisplay, xroot, &attr);
rhp's avatar
...  
rhp committed
491
492
493
494
495
  XSelectInput (xdisplay,
                xroot,
                SubstructureRedirectMask | SubstructureNotifyMask |
                ColormapChangeMask | PropertyChangeMask |
                LeaveWindowMask | EnterWindowMask |
496
                ButtonPressMask | ButtonReleaseMask |
497
                KeyPressMask | KeyReleaseMask |
498
499
                FocusChangeMask | StructureNotifyMask |
		attr.your_event_mask);
500
  if (meta_error_trap_pop_with_return (display, FALSE) != Success)
rhp's avatar
...  
rhp committed
501
    {
Havoc Pennington's avatar
Havoc Pennington committed
502
      meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
rhp's avatar
...  
rhp committed
503
                    number, display->name);
Havoc Pennington's avatar
Havoc Pennington committed
504
505
506

      XDestroyWindow (xdisplay, new_wm_sn_owner);
      
rhp's avatar
...  
rhp committed
507
508
      return NULL;
    }
rhp's avatar
...  
rhp committed
509
510
  
  screen = g_new (MetaScreen, 1);
511
  screen->closing = 0;
Havoc Pennington's avatar
Havoc Pennington committed
512
  
rhp's avatar
...  
rhp committed
513
  screen->display = display;
rhp's avatar
...  
rhp committed
514
  screen->number = number;
rhp's avatar
...  
rhp committed
515
  screen->screen_name = get_screen_name (display, number);
rhp's avatar
...  
rhp committed
516
  screen->xscreen = ScreenOfDisplay (xdisplay, number);
rhp's avatar
...  
rhp committed
517
  screen->xroot = xroot;
rhp's avatar
...  
rhp committed
518
519
  screen->width = WidthOfScreen (screen->xscreen);
  screen->height = HeightOfScreen (screen->xscreen);
rhp's avatar
...  
rhp committed
520
  screen->current_cursor = -1; /* invalid/unset */
Havoc Pennington's avatar
Havoc Pennington committed
521
522
  screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
  screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
523

Havoc Pennington's avatar
Havoc Pennington committed
524
525
526
527
  screen->wm_sn_selection_window = new_wm_sn_owner;
  screen->wm_sn_atom = wm_sn_atom;
  screen->wm_sn_timestamp = manager_timestamp;
  
528
  screen->work_area_idle = 0;
529

530
  screen->active_workspace = NULL;
531
  screen->workspaces = NULL;
532
533
534
  screen->rows_of_workspaces = 1;
  screen->columns_of_workspaces = -1;
  screen->vertical_workspaces = FALSE;
535
  screen->starting_corner = META_SCREEN_TOPLEFT;
536

537
538
  screen->showing_desktop = FALSE;
  
539
540
  screen->xinerama_infos = NULL;
  screen->n_xinerama_infos = 0;
Havoc Pennington's avatar
Havoc Pennington committed
541
  screen->last_xinerama_index = 0;
542
  
543
  reload_xinerama_infos (screen);
rhp's avatar
...  
rhp committed
544
545
  
  meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
rhp's avatar
...  
rhp committed
546
  
rhp's avatar
...  
rhp committed
547
  if (display->leader_window == None)
548
549
550
    display->leader_window = meta_create_offscreen_window (display->xdisplay,
                                                           screen->xroot);
  
551
552
  if (display->no_focus_window == None)
    {
553
554
555
      display->no_focus_window = meta_create_offscreen_window (display->xdisplay,
                                                               screen->xroot);

556
      XSelectInput (display->xdisplay, display->no_focus_window,
557
                    FocusChangeMask | KeyPressMask | KeyReleaseMask);
558
559
560
      XMapWindow (display->xdisplay, display->no_focus_window);
    }
  
Havoc Pennington's avatar
Havoc Pennington committed
561
  set_wm_icon_size_hint (screen);
rhp's avatar
...  
rhp committed
562
  
rhp's avatar
...  
rhp committed
563
564
565
  set_supported_hint (screen);
  
  set_wm_check_hint (screen);
566
567

  meta_screen_update_workspace_layout (screen);
Havoc Pennington's avatar
Havoc Pennington committed
568
  meta_screen_update_workspace_names (screen);
rhp's avatar
...  
rhp committed
569
  
rhp's avatar
...  
rhp committed
570
571
572
  /* Screens must have at least one workspace at all times,
   * so create that required workspace.
   */
573
  meta_workspace_activate (meta_workspace_new (screen));
574
  update_num_workspaces (screen);
575

576
  screen->all_keys_grabbed = FALSE;
577
  screen->keys_grabbed = FALSE;
rhp's avatar
...  
rhp committed
578
  meta_screen_grab_keys (screen);
rhp's avatar
...  
rhp committed
579

rhp's avatar
...  
rhp committed
580
  screen->ui = meta_ui_new (screen->display->xdisplay,
rhp's avatar
...  
rhp committed
581
                            screen->xscreen);
rhp's avatar
...  
rhp committed
582

583
584
  screen->tab_popup = NULL;
  
rhp's avatar
...  
rhp committed
585
  screen->stack = meta_stack_new (screen);
586
587

  meta_prefs_add_listener (prefs_changed_callback, screen);
588
589
590
591
592
593
594
595
596
597
598

#ifdef HAVE_STARTUP_NOTIFICATION
  screen->sn_context =
    sn_monitor_context_new (screen->display->sn_display,
                            screen->number,
                            meta_screen_sn_event,
                            screen,
                            NULL);
  screen->startup_sequences = NULL;
  screen->startup_sequence_timeout = 0;
#endif
rhp's avatar
...  
rhp committed
599
  
rhp's avatar
...  
rhp committed
600
601
  meta_verbose ("Added screen %d ('%s') root 0x%lx\n",
                screen->number, screen->screen_name, screen->xroot);  
rhp's avatar
...  
rhp committed
602
603
604
605
606
607
  
  return screen;
}

void
meta_screen_free (MetaScreen *screen)
Havoc Pennington's avatar
Havoc Pennington committed
608
609
610
611
{
  MetaDisplay *display;

  display = screen->display;
612
613

  screen->closing += 1;
Havoc Pennington's avatar
Havoc Pennington committed
614
615
616
617
618
  
  meta_display_grab (display);

  meta_display_unmanage_windows_for_screen (display, screen);
  
619
620
  meta_prefs_remove_listener (prefs_changed_callback, screen);
  
rhp's avatar
...  
rhp committed
621
  meta_screen_ungrab_keys (screen);
622

623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
#ifdef HAVE_STARTUP_NOTIFICATION
  g_slist_foreach (screen->startup_sequences,
                   (GFunc) sn_startup_sequence_unref, NULL);
  g_slist_free (screen->startup_sequences);
  screen->startup_sequences = NULL;

  if (screen->startup_sequence_timeout != 0)
    {
      g_source_remove (screen->startup_sequence_timeout);
      screen->startup_sequence_timeout = 0;
    }
  if (screen->sn_context)
    {
      sn_monitor_context_unref (screen->sn_context);
      screen->sn_context = NULL;
    }
#endif
  
rhp's avatar
...  
rhp committed
641
  meta_ui_free (screen->ui);
rhp's avatar
...  
rhp committed
642

rhp's avatar
...  
rhp committed
643
  meta_stack_free (screen->stack);
644

645
  meta_error_trap_push_with_return (screen->display);
646
  XSelectInput (screen->display->xdisplay, screen->xroot, 0);
647
  if (meta_error_trap_pop_with_return (screen->display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
648
    meta_warning (_("Could not release screen %d on display \"%s\"\n"),
649
                  screen->number, screen->display->name);
650

Havoc Pennington's avatar
Havoc Pennington committed
651
652
653
  XDestroyWindow (screen->display->xdisplay,
                  screen->wm_sn_selection_window);
  
654
655
  if (screen->work_area_idle != 0)
    g_source_remove (screen->work_area_idle);
rhp's avatar
...  
rhp committed
656
  
rhp's avatar
...  
rhp committed
657
  g_free (screen->screen_name);
rhp's avatar
...  
rhp committed
658
  g_free (screen);
Havoc Pennington's avatar
Havoc Pennington committed
659

660
  XFlush (display->xdisplay);
Havoc Pennington's avatar
Havoc Pennington committed
661
  meta_display_ungrab (display);
rhp's avatar
...  
rhp committed
662
663
}

rhp's avatar
...  
rhp committed
664
665
666
667
668
void
meta_screen_manage_all_windows (MetaScreen *screen)
{
  Window ignored1, ignored2;
  Window *children;
669
  int n_children;
rhp's avatar
...  
rhp committed
670
671
672
673
674
  int i;

  /* Must grab server to avoid obvious race condition */
  meta_display_grab (screen->display);

675
  meta_error_trap_push_with_return (screen->display);
rhp's avatar
...  
rhp committed
676
677
678
679
  
  XQueryTree (screen->display->xdisplay,
              screen->xroot,
              &ignored1, &ignored2, &children, &n_children);
rhp's avatar
...  
rhp committed
680

681
  if (meta_error_trap_pop_with_return (screen->display, TRUE) != Success)
rhp's avatar
...  
rhp committed
682
683
684
685
    {
      meta_display_ungrab (screen->display);
      return;
    }
rhp's avatar
...  
rhp committed
686
687

  meta_stack_freeze (screen->stack);
rhp's avatar
...  
rhp committed
688
689
690
  i = 0;
  while (i < n_children)
    {
rhp's avatar
...  
rhp committed
691
      meta_window_new (screen->display, children[i], TRUE);
rhp's avatar
...  
rhp committed
692
693
694

      ++i;
    }
rhp's avatar
...  
rhp committed
695
  meta_stack_thaw (screen->stack);
rhp's avatar
...  
rhp committed
696
697
698
699
700
701

  meta_display_ungrab (screen->display);
  
  if (children)
    XFree (children);
}
rhp's avatar
...  
rhp committed
702
703
704
705
706
707
708
709
710
711
712
713
714

MetaScreen*
meta_screen_for_x_screen (Screen *xscreen)
{
  MetaDisplay *display;
  
  display = meta_display_for_x_display (DisplayOfScreen (xscreen));

  if (display == NULL)
    return NULL;
  
  return meta_display_screen_for_x_screen (display, xscreen);
}
rhp's avatar
...  
rhp committed
715

716
717
718
719
720
721
722
723
724
725
static void
prefs_changed_callback (MetaPreference pref,
                        gpointer       data)
{
  MetaScreen *screen = data;
  
  if (pref == META_PREF_NUM_WORKSPACES)
    {
      update_num_workspaces (screen);
    }
726
727
728
729
  else if (pref == META_PREF_FOCUS_MODE)
    {
      update_focus_mode (screen);
    }
730
731
732
}


rhp's avatar
...  
rhp committed
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
static char*
get_screen_name (MetaDisplay *display,
                 int          number)
{
  char *p;
  char *dname;
  char *scr;
  
  /* DisplayString gives us a sort of canonical display,
   * vs. the user-entered name from XDisplayName()
   */
  dname = g_strdup (DisplayString (display->xdisplay));

  /* Change display name to specify this screen.
   */
  p = strrchr (dname, ':');
  if (p)
    {
      p = strchr (p, '.');
      if (p)
        *p = '\0';
    }
  
  scr = g_strdup_printf ("%s.%d", dname, number);

  g_free (dname);

  return scr;
}
rhp's avatar
...  
rhp committed
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817

static gint
ptrcmp (gconstpointer a, gconstpointer b)
{
  if (a < b)
    return -1;
  else if (a > b)
    return 1;
  else
    return 0;
}

static void
listify_func (gpointer key, gpointer value, gpointer data)
{
  GSList **listp;
  
  listp = data;

  *listp = g_slist_prepend (*listp, value);
}

void
meta_screen_foreach_window (MetaScreen *screen,
                            MetaScreenWindowFunc func,
                            gpointer data)
{
  GSList *winlist;
  GSList *tmp;

  /* If we end up doing this often, just keeping a list
   * of windows might be sensible.
   */
  
  winlist = NULL;
  g_hash_table_foreach (screen->display->window_ids,
                        listify_func,
                        &winlist);
  
  winlist = g_slist_sort (winlist, ptrcmp);
  
  tmp = winlist;
  while (tmp != NULL)
    {
      /* If the next node doesn't contain this window
       * a second time, delete the window.
       */
      if (tmp->next == NULL ||
          (tmp->next && tmp->next->data != tmp->data))
        {
          MetaWindow *window = tmp->data;

          if (window->screen == screen)
            (* func) (screen, window, data);
        }
      
818
      tmp = tmp->next;
rhp's avatar
...  
rhp committed
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
    }
  g_slist_free (winlist);
}

static void
queue_draw (MetaScreen *screen, MetaWindow *window, gpointer data)
{
  if (window->frame)
    meta_frame_queue_draw (window->frame);
}

void
meta_screen_queue_frame_redraws (MetaScreen *screen)
{
  meta_screen_foreach_window (screen, queue_draw, NULL);
}
rhp's avatar
...  
rhp committed
835

rhp's avatar
...  
rhp committed
836
837
838
839
840
841
842
843
844
845
846
static void
queue_resize (MetaScreen *screen, MetaWindow *window, gpointer data)
{
  meta_window_queue_move_resize (window);
}

void
meta_screen_queue_window_resizes (MetaScreen *screen)
{
  meta_screen_foreach_window (screen, queue_resize, NULL);
}
rhp's avatar
...  
rhp committed
847

rhp's avatar
rhp committed
848
849
int
meta_screen_get_n_workspaces (MetaScreen *screen)
850
851
852
853
854
855
856
{
  return g_list_length (screen->workspaces);
}

MetaWorkspace*
meta_screen_get_workspace_by_index (MetaScreen  *screen,
                                    int          idx)
rhp's avatar
rhp committed
857
858
859
860
{
  GList *tmp;
  int i;

861
862
863
864
  /* should be robust, idx is maybe from an app */
  if (idx < 0)
    return NULL;
  
rhp's avatar
rhp committed
865
  i = 0;
866
  tmp = screen->workspaces;
rhp's avatar
rhp committed
867
868
869
870
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

871
872
873
874
      if (i == idx)
        return w;

      ++i;
rhp's avatar
rhp committed
875
876
877
      tmp = tmp->next;
    }

878
  return NULL;
879
}
rhp's avatar
rhp committed
880

881
static void
882
883
884
885
886
887
set_number_of_spaces_hint (MetaScreen *screen,
			   int         n_spaces)
{
  unsigned long data[1];

  if (screen->closing > 0)
888
    return;
889
890
891
892
893
894
895
896
897
898

  data[0] = n_spaces;

  meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %ld\n", data[0]);

  meta_error_trap_push (screen->display);
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_number_of_desktops,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 1);
899
  meta_error_trap_pop (screen->display, FALSE);
900
901
}

902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
static void
update_num_workspaces (MetaScreen *screen)
{
  int new_num;
  GList *tmp;
  int i;
  GList *extras;
  MetaWorkspace *last_remaining;
  gboolean need_change_space;
  
  new_num = meta_prefs_get_num_workspaces ();

  g_assert (new_num > 0);

  last_remaining = NULL;
  extras = NULL;
  i = 0;
919
  tmp = screen->workspaces;
920
921
922
923
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

924
925
926
927
928
929
      if (i > new_num)
        extras = g_list_prepend (extras, w);
      else
        last_remaining = w;
          
      ++i;
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
      tmp = tmp->next;
    }

  g_assert (last_remaining);
  
  /* Get rid of the extra workspaces by moving all their windows
   * to last_remaining, then activating last_remaining if
   * one of the removed workspaces was active. This will be a bit
   * wacky if the config tool for changing number of workspaces
   * is on a removed workspace ;-)
   */
  need_change_space = FALSE;
  tmp = extras;
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

      meta_workspace_relocate_windows (w, last_remaining);      

      if (w == screen->active_workspace)
        need_change_space = TRUE;
      
      tmp = tmp->next;
    }

  if (need_change_space)
    meta_workspace_activate (last_remaining);

  /* Should now be safe to free the workspaces */
  tmp = extras;
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

      g_assert (w->windows == NULL);
      meta_workspace_free (w);
      
      tmp = tmp->next;
    }
  
  g_list_free (extras);
  
  while (i < new_num)
    {
      meta_workspace_new (screen);
      ++i;
    }
977

978
979
  set_number_of_spaces_hint (screen, new_num);

980
  meta_screen_queue_workarea_recalc (screen);
rhp's avatar
rhp committed
981
}
rhp's avatar
...  
rhp committed
982

983
984
985
static void
update_focus_mode (MetaScreen *screen)
{
986
  /* nothing to do anymore */ ;
987
988
}

rhp's avatar
...  
rhp committed
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
void
meta_screen_set_cursor (MetaScreen *screen,
                        MetaCursor  cursor)
{
  Cursor xcursor;

  if (cursor == screen->current_cursor)
    return;

  screen->current_cursor = cursor;
  
  xcursor = meta_display_create_x_cursor (screen->display, cursor);
  XDefineCursor (screen->display->xdisplay, screen->xroot, xcursor);
  XFreeCursor (screen->display->xdisplay, xcursor);
}
1004
1005

void
Havoc Pennington's avatar
Havoc Pennington committed
1006
1007
meta_screen_ensure_tab_popup (MetaScreen *screen,
                              MetaTabList type)
1008
1009
1010
1011
1012
1013
{
  MetaTabEntry *entries;
  GSList *tab_list;
  GSList *tmp;
  int len;
  int i;
1014

1015
1016
1017
  if (screen->tab_popup)
    return;

Havoc Pennington's avatar
Havoc Pennington committed
1018
  tab_list = meta_display_get_tab_list (screen->display,
Havoc Pennington's avatar
Havoc Pennington committed
1019
                                        type,
Havoc Pennington's avatar
Havoc Pennington committed
1020
1021
1022
                                        screen,
                                        screen->active_workspace);
  
1023
1024
1025
  len = g_slist_length (tab_list);

  entries = g_new (MetaTabEntry, len + 1);
1026
  entries[len].key = NULL;
1027
1028
1029
1030
1031
1032
1033
1034
  entries[len].title = NULL;
  entries[len].icon = NULL;
  
  i = 0;
  tmp = tab_list;
  while (i < len)
    {
      MetaWindow *window;
1035
1036
      MetaRectangle r;
      
1037
1038
      window = tmp->data;
      
1039
      entries[i].key = (MetaTabEntryKey) window->xwindow;
1040
1041
      entries[i].title = window->title;
      entries[i].icon = window->icon;
Havoc Pennington's avatar
Havoc Pennington committed
1042
1043
1044
1045

      if (!window->minimized || !meta_window_get_icon_geometry (window, &r))
        meta_window_get_outer_rect (window, &r);
      
1046
1047
1048
1049
      entries[i].x = r.x;
      entries[i].y = r.y;
      entries[i].width = r.width;
      entries[i].height = r.height;
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076

      /* Find inside of highlight rectangle to be used
       * when window is outlined for tabbing.
       * This should be the size of the east/west frame,
       * and the size of the south frame, on those sides.
       * on the top it should be the size of the south frame
       * edge.
       */
      if (window->frame)
        {
          int south = window->frame->rect.height - window->frame->child_y -
            window->rect.height;
          int east = window->frame->child_x;
          entries[i].inner_x = east;
          entries[i].inner_y = south;
          entries[i].inner_width = window->rect.width;
          entries[i].inner_height = window->frame->rect.height - south * 2;
        }
      else
        {
          /* Use an arbitrary border size */
#define OUTLINE_WIDTH 5
          entries[i].inner_x = OUTLINE_WIDTH;
          entries[i].inner_y = OUTLINE_WIDTH;
          entries[i].inner_width = window->rect.width - OUTLINE_WIDTH * 2;
          entries[i].inner_height = window->rect.height - OUTLINE_WIDTH * 2;
        }
1077
1078
1079
1080
      
      ++i;
      tmp = tmp->next;
    }
1081

1082
1083
1084
1085
1086
  screen->tab_popup = meta_ui_tab_popup_new (entries, 
                                             screen->number,
                                             len,
                                             5, /* FIXME */
                                             TRUE);
1087
1088
  g_free (entries);

1089
1090
  g_slist_free (tab_list);
  
1091
1092
  /* don't show tab popup, since proper window isn't selected yet */
}
1093

1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
void
meta_screen_ensure_workspace_popup (MetaScreen *screen)
{
  MetaTabEntry *entries;
  int len, rows, cols;
  int i;

  if (screen->tab_popup)
    return;

  len = meta_screen_get_n_workspaces (screen);

  entries = g_new (MetaTabEntry, len + 1);
  entries[len].key = NULL;
  entries[len].title = NULL;
  entries[len].icon = NULL;
  
  meta_screen_calc_workspace_layout (screen, len, &rows, &cols);
1112

1113
1114
  /* FIXME: handle screen->starting_corner
   */
1115
1116
  if (screen->vertical_workspaces)
    {
1117
      int j, k, iter;
1118

1119
      for (i = 0, iter = 0; i < rows; ++i)
1120
1121
1122
1123
1124
1125
        {
          for (j = 0; j < cols; ++j)
            {
              MetaWorkspace *workspace;

              k = i + (j * rows);
1126
1127
              if (k >= len)
                break;
1128

1129
              workspace = meta_screen_get_workspace_by_index (screen, k);
1130
1131
              g_assert (workspace);

1132
1133
1134
1135
              entries[iter].key = (MetaTabEntryKey) workspace;
              entries[iter].title = workspace->name;
              entries[iter].icon = NULL;
              iter++;
1136
1137
            }
        }
1138
1139

      g_assert (iter == len);
1140
1141
1142
1143
1144
1145
1146
    }
  else
    {
      for (i = 0; i < len; ++i)
        {
          MetaWorkspace *workspace;

1147
          workspace = meta_screen_get_workspace_by_index (screen, i);
1148
1149
1150
1151
1152

          g_assert (workspace);

          entries[i].key = (MetaTabEntryKey) workspace;
          entries[i].title = workspace->name;
1153
          entries[i].icon = NULL;
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
        }
    }

  screen->tab_popup = meta_ui_tab_popup_new (entries, 
                                             screen->number,
                                             len,
                                             cols,
                                             FALSE);      

  g_free (entries);

  /* don't show tab popup, since proper window isn't selected yet */
}

1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
/* Focus top window on active workspace */
void
meta_screen_focus_top_window (MetaScreen *screen,
                              MetaWindow *not_this_one)
{
  MetaWindow *window;

  if (not_this_one)
    meta_topic (META_DEBUG_FOCUS,
                "Focusing top window excluding %s\n", not_this_one->desc);
  
  window = meta_stack_get_default_focus_window (screen->stack,
                                                screen->active_workspace,
                                                not_this_one);

  /* FIXME I'm a loser on the CurrentTime front */
  if (window)
    {
      meta_topic (META_DEBUG_FOCUS,
                  "Focusing top window %s\n", window->desc);

      meta_window_focus (window, meta_display_get_current_time (screen->display));
1190
1191
1192
1193

      /* Also raise the window if in click-to-focus */
      if (meta_prefs_get_focus_mode () == META_FOCUS_MODE_CLICK)
        meta_window_raise (window);
1194
1195
1196
1197
1198
1199
    }
  else
    {
      meta_topic (META_DEBUG_FOCUS, "No top window to focus found\n");
    }
}
1200

1201
1202
1203
1204
1205
1206
const MetaXineramaScreenInfo*
meta_screen_get_xinerama_for_window (MetaScreen *screen,
				     MetaWindow *window)
{
  int i;
  int best_xinerama, xinerama_score;
1207
  MetaRectangle window_rect;
1208

1209
1210
1211
1212
1213
  if (screen->n_xinerama_infos == 1)
    return &screen->xinerama_infos[0];
  
  meta_window_get_outer_rect (window, &window_rect);
  
1214
1215
1216
  best_xinerama = 0;
  xinerama_score = 0;

Havoc Pennington's avatar
Havoc Pennington committed
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
  i = 0;
  while (i < screen->n_xinerama_infos)
    {
      MetaRectangle dest, screen_info;
      
      screen_info.x = screen->xinerama_infos[i].x_origin;
      screen_info.y = screen->xinerama_infos[i].y_origin;
      screen_info.width = screen->xinerama_infos[i].width;
      screen_info.height = screen->xinerama_infos[i].height;
      
1227
      if (meta_rectangle_intersect (&screen_info, &window_rect, &dest))
Havoc Pennington's avatar
Havoc Pennington committed
1228
1229
1230
1231
1232
1233
1234
        {
          if (dest.width * dest.height > xinerama_score)
            {
              xinerama_score = dest.width * dest.height;
              best_xinerama = i;
            }
        }
1235

Havoc Pennington's avatar
Havoc Pennington committed
1236
1237
      ++i;
    }
1238
1239
1240
1241

  return &screen->xinerama_infos[best_xinerama];
}

1242
1243
1244
const MetaXineramaScreenInfo*
meta_screen_get_current_xinerama (MetaScreen *screen)
{
Havoc Pennington's avatar
Havoc Pennington committed
1245
  if (screen->n_xinerama_infos == 1)
1246
    return &screen->xinerama_infos[0];
Havoc Pennington's avatar
Havoc Pennington committed
1247
1248
1249

  /* Sadly, we have to do it this way. Yuck.
   */
1250
  
Havoc Pennington's avatar
Havoc Pennington committed
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
  if (screen->display->xinerama_cache_invalidated)
    {
      Window root_return, child_return;
      int root_x_return, root_y_return;
      int win_x_return, win_y_return;
      unsigned int mask_return;
      int i;
      
      screen->display->xinerama_cache_invalidated = FALSE;
      
      XQueryPointer (screen->display->xdisplay,
                     screen->xroot,
                     &root_return,
                     &child_return,
                     &root_x_return,
                     &root_y_return,
                     &win_x_return,
                     &win_y_return,
                     &mask_return);

      screen->last_xinerama_index = 0;
      i = 0;
      while (i < screen->n_xinerama_infos)
        {
          if ((root_x_return >= screen->xinerama_infos[i].x_origin &&
               root_x_return < (screen->xinerama_infos[i].x_origin + screen->xinerama_infos[i].width) &&
               root_y_return >= screen->xinerama_infos[i].y_origin &&
               root_y_return < (screen->xinerama_infos[i].y_origin + screen->xinerama_infos[i].height)))
          {
            screen->last_xinerama_index = i;
            break;
          }
          
          ++i;
        }
      
      meta_topic (META_DEBUG_XINERAMA,
                  "Rechecked current Xinerama, now %d\n",
                  screen->last_xinerama_index);
    }

  return &screen->xinerama_infos[screen->last_xinerama_index];
1293
}
1294
1295
1296
1297

#define _NET_WM_ORIENTATION_HORZ 0
#define _NET_WM_ORIENTATION_VERT 1

1298
1299
1300
1301
1302
#define _NET_WM_TOPLEFT     0
#define _NET_WM_TOPRIGHT    1
#define _NET_WM_BOTTOMRIGHT 2
#define _NET_WM_BOTTOMLEFT  3

1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
void
meta_screen_update_workspace_layout (MetaScreen *screen)
{
  gulong *list;
  int n_items;
  
  list = NULL;
  n_items = 0;

  if (meta_prop_get_cardinal_list (screen->display,
                                   screen->xroot,
                                   screen->display->atom_net_desktop_layout,
                                   &list, &n_items))
    {
1317
      if (n_items == 3 || n_items == 4)
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
        {
          int cols, rows;
          
          switch (list[0])
            {
            case _NET_WM_ORIENTATION_HORZ:
              screen->vertical_workspaces = FALSE;
              break;
            case _NET_WM_ORIENTATION_VERT:
              screen->vertical_workspaces = TRUE;
              break;
            default:
              meta_warning ("Someone set a weird orientation in _NET_DESKTOP_LAYOUT\n");
              break;
            }

1334
1335
          cols = list[1];
          rows = list[2];
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352

          if (rows <= 0 && cols <= 0)
            {
              meta_warning ("Columns = %d rows = %d in _NET_DESKTOP_LAYOUT makes no sense\n", rows, cols);
            }
          else
            {
              if (rows > 0)
                screen->rows_of_workspaces = rows;
              else
                screen->rows_of_workspaces = -1;
              
              if (cols > 0)
                screen->columns_of_workspaces = cols;
              else
                screen->columns_of_workspaces = -1;
            }
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374

          if (n_items == 4)
            {
              switch (list[3])
                {
                  case _NET_WM_TOPLEFT:
                    screen->starting_corner = META_SCREEN_TOPLEFT;
                    break;
                  case _NET_WM_TOPRIGHT:
                    screen->starting_corner = META_SCREEN_TOPRIGHT;
                    break;
                  case _NET_WM_BOTTOMRIGHT:
                    screen->starting_corner = META_SCREEN_BOTTOMRIGHT;
                    break;
                  case _NET_WM_BOTTOMLEFT:
                    screen->starting_corner = META_SCREEN_BOTTOMLEFT;
                    break;
                  default:
                    meta_warning ("Someone set a weird starting corner in _NET_DESKTOP_LAYOUT\n");
                    break;
                }
            }
1375
1376
1377
        }
      else
        {
1378
1379
          meta_warning ("Someone set _NET_DESKTOP_LAYOUT to %d integers instead of 4 "
                        "(3 is accepted for backwards compat)\n", n_items);
1380
1381
1382
1383
1384
        }

      meta_XFree (list);
    }

1385
  meta_verbose ("Workspace layout rows = %d cols = %d orientation = %d starting corner = %d\n",
1386
1387
                screen->rows_of_workspaces,
                screen->columns_of_workspaces,
1388
1389
                screen->vertical_workspaces,
                screen->starting_corner);
1390
}
1391

Havoc Pennington's avatar
Havoc Pennington committed
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
void
meta_screen_update_workspace_names (MetaScreen *screen)
{
  char **names;
  int n_names;
  int i;
  GList *tmp;
  
  names = NULL;
  n_names = 0;
  if (!meta_prop_get_utf8_list (screen->display,
                                screen->xroot,
                                screen->display->atom_net_desktop_names,
                                &names, &n_names))
    {
      meta_verbose ("Failed to get workspace names from root window %d\n",
                    screen->number);
      return;
    }

  i = 0;
1413
  tmp = screen->workspaces;
Havoc Pennington's avatar
Havoc Pennington committed
1414
1415
1416
1417
  while (tmp != NULL && i < n_names)
    {
      MetaWorkspace *w = tmp->data;

1418
      meta_workspace_set_name (w, names[i]);
Havoc Pennington's avatar
Havoc Pennington committed
1419
          
1420
      ++i;
Havoc Pennington's avatar
Havoc Pennington committed
1421
1422
1423
1424
1425
1426
1427
      
      tmp = tmp->next;
    }
  
  g_strfreev (names);
}

1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
Window
meta_create_offscreen_window (Display *xdisplay,
                              Window   parent)
{
  XSetWindowAttributes attrs;

  /* we want to be override redirect because sometimes we
   * create a window on a screen we aren't managing.
   * (but on a display we are managing at least one screen for)
   */
  attrs.override_redirect = True;
  
  return XCreateWindow (xdisplay,
                        parent,
                        -100, -100, 1, 1,
                        0,
                        CopyFromParent,
                        CopyFromParent,
                        CopyFromParent,
                        CWOverrideRedirect,
                        &attrs);
}
1450

1451
static void
1452
1453
1454
1455
1456
1457
1458
1459
1460
set_work_area_hint (MetaScreen *screen)
{
  int num_workspaces;
  GList *tmp_list;
  unsigned long *data, *tmp;
  MetaRectangle area;
  
  num_workspaces = meta_screen_get_n_workspaces (screen);
  data = g_new (unsigned long, num_workspaces * 4);
1461
  tmp_list = screen->workspaces;
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486 </