add <dialog><focus/><desktop/> to allow disabling popups
[dana/openbox.git] / openbox / screen.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    screen.c for the Openbox window manager
4    Copyright (c) 2003        Ben Jansens
5
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 2 of the License, or
9    (at your option) any later version.
10
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15
16    See the COPYING file for a copy of the GNU General Public License.
17 */
18
19 #include "debug.h"
20 #include "openbox.h"
21 #include "dock.h"
22 #include "xerror.h"
23 #include "prop.h"
24 #include "grab.h"
25 #include "startupnotify.h"
26 #include "moveresize.h"
27 #include "config.h"
28 #include "screen.h"
29 #include "client.h"
30 #include "frame.h"
31 #include "event.h"
32 #include "focus.h"
33 #include "popup.h"
34 #include "extensions.h"
35 #include "render/render.h"
36
37 #include <X11/Xlib.h>
38 #ifdef HAVE_UNISTD_H
39 #  include <sys/types.h>
40 #  include <unistd.h>
41 #endif
42 #include <assert.h>
43
44 /*! The event mask to grab on the root window */
45 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
46                         EnterWindowMask | LeaveWindowMask | \
47                         SubstructureNotifyMask | SubstructureRedirectMask | \
48                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
49
50 guint    screen_num_desktops;
51 guint    screen_num_monitors;
52 guint    screen_desktop;
53 guint    screen_last_desktop;
54 Size     screen_physical_size;
55 gboolean screen_showing_desktop;
56 DesktopLayout screen_desktop_layout;
57 char   **screen_desktop_names;
58 Window   screen_support_win;
59
60 static Rect  **area; /* array of desktop holding array of xinerama areas */
61 static Rect  *monitor_area;
62
63 static ObPagerPopup *desktop_cycle_popup;
64
65 static gboolean replace_wm()
66 {
67     char *wm_sn;
68     Atom wm_sn_atom;
69     Window current_wm_sn_owner;
70     Time timestamp;
71
72     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
73     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
74     g_free(wm_sn);
75
76     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
77     if (current_wm_sn_owner) {
78         if (!ob_replace_wm) {
79             g_warning("A window manager is already running on screen %d",
80                       ob_screen);
81             return FALSE;
82         }
83         xerror_set_ignore(TRUE);
84         xerror_occured = FALSE;
85
86         /* We want to find out when the current selection owner dies */
87         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
88         XSync(ob_display, FALSE);
89
90         xerror_set_ignore(FALSE);
91         if (xerror_occured)
92             current_wm_sn_owner = None;
93     }
94
95     {
96         /* Generate a timestamp */
97         XEvent event;
98
99         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
100
101         XChangeProperty(ob_display, screen_support_win,
102                         prop_atoms.wm_class, prop_atoms.string,
103                         8, PropModeAppend, NULL, 0);
104         XWindowEvent(ob_display, screen_support_win,
105                      PropertyChangeMask, &event);
106
107         XSelectInput(ob_display, screen_support_win, NoEventMask);
108
109         timestamp = event.xproperty.time;
110     }
111
112     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
113                        timestamp);
114
115     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
116         g_warning("Could not acquire window manager selection on screen %d",
117                   ob_screen);
118         return FALSE;
119     }
120
121     /* Wait for old window manager to go away */
122     if (current_wm_sn_owner) {
123       XEvent event;
124       gulong wait = 0;
125       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
126
127       while (wait < timeout) {
128           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
129                                 StructureNotifyMask, &event) &&
130               event.type == DestroyNotify)
131               break;
132           g_usleep(G_USEC_PER_SEC / 10);
133           wait += G_USEC_PER_SEC / 10;
134       }
135
136       if (wait >= timeout) {
137           g_warning("Timeout expired while waiting for the current WM to die "
138                     "on screen %d", ob_screen);
139           return FALSE;
140       }
141     }
142
143     /* Send client message indicating that we are now the WM */
144     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
145                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
146
147
148     return TRUE;
149 }
150
151 gboolean screen_annex()
152 {
153     XSetWindowAttributes attrib;
154     pid_t pid;
155     gint i, num_support;
156     guint32 *supported;
157
158     /* create the netwm support window */
159     attrib.override_redirect = TRUE;
160     screen_support_win = XCreateWindow(ob_display,
161                                        RootWindow(ob_display, ob_screen),
162                                        -100, -100, 1, 1, 0,
163                                        CopyFromParent, InputOutput,
164                                        CopyFromParent,
165                                        CWOverrideRedirect, &attrib);
166     XMapRaised(ob_display, screen_support_win);
167
168     if (!replace_wm()) {
169         XDestroyWindow(ob_display, screen_support_win);
170         return FALSE;
171     }
172
173     xerror_set_ignore(TRUE);
174     xerror_occured = FALSE;
175     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
176                  ROOT_EVENTMASK);
177     xerror_set_ignore(FALSE);
178     if (xerror_occured) {
179         g_warning("A window manager is already running on screen %d",
180                   ob_screen);
181
182         XDestroyWindow(ob_display, screen_support_win);
183         return FALSE;
184     }
185
186
187     screen_set_root_cursor();
188
189     /* set the OPENBOX_PID hint */
190     pid = getpid();
191     PROP_SET32(RootWindow(ob_display, ob_screen),
192                openbox_pid, cardinal, pid);
193
194     /* set supporting window */
195     PROP_SET32(RootWindow(ob_display, ob_screen),
196                net_supporting_wm_check, window, screen_support_win);
197
198     /* set properties on the supporting window */
199     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
200     PROP_SET32(screen_support_win, net_supporting_wm_check,
201                window, screen_support_win);
202
203     /* set the _NET_SUPPORTED_ATOMS hint */
204     num_support = 51;
205     i = 0;
206     supported = g_new(guint32, num_support);
207     supported[i++] = prop_atoms.net_current_desktop;
208     supported[i++] = prop_atoms.net_number_of_desktops;
209     supported[i++] = prop_atoms.net_desktop_geometry;
210     supported[i++] = prop_atoms.net_desktop_viewport;
211     supported[i++] = prop_atoms.net_active_window;
212     supported[i++] = prop_atoms.net_workarea;
213     supported[i++] = prop_atoms.net_client_list;
214     supported[i++] = prop_atoms.net_client_list_stacking;
215     supported[i++] = prop_atoms.net_desktop_names;
216     supported[i++] = prop_atoms.net_close_window;
217     supported[i++] = prop_atoms.net_desktop_layout;
218     supported[i++] = prop_atoms.net_showing_desktop;
219     supported[i++] = prop_atoms.net_wm_name;
220     supported[i++] = prop_atoms.net_wm_visible_name;
221     supported[i++] = prop_atoms.net_wm_icon_name;
222     supported[i++] = prop_atoms.net_wm_visible_icon_name;
223     supported[i++] = prop_atoms.net_wm_desktop;
224     supported[i++] = prop_atoms.net_wm_strut;
225     supported[i++] = prop_atoms.net_wm_window_type;
226     supported[i++] = prop_atoms.net_wm_window_type_desktop;
227     supported[i++] = prop_atoms.net_wm_window_type_dock;
228     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
229     supported[i++] = prop_atoms.net_wm_window_type_menu;
230     supported[i++] = prop_atoms.net_wm_window_type_utility;
231     supported[i++] = prop_atoms.net_wm_window_type_splash;
232     supported[i++] = prop_atoms.net_wm_window_type_dialog;
233     supported[i++] = prop_atoms.net_wm_window_type_normal;
234     supported[i++] = prop_atoms.net_wm_allowed_actions;
235     supported[i++] = prop_atoms.net_wm_action_move;
236     supported[i++] = prop_atoms.net_wm_action_resize;
237     supported[i++] = prop_atoms.net_wm_action_minimize;
238     supported[i++] = prop_atoms.net_wm_action_shade;
239     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
240     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
241     supported[i++] = prop_atoms.net_wm_action_fullscreen;
242     supported[i++] = prop_atoms.net_wm_action_change_desktop;
243     supported[i++] = prop_atoms.net_wm_action_close;
244     supported[i++] = prop_atoms.net_wm_state;
245     supported[i++] = prop_atoms.net_wm_state_modal;
246     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
247     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
248     supported[i++] = prop_atoms.net_wm_state_shaded;
249     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
250     supported[i++] = prop_atoms.net_wm_state_skip_pager;
251     supported[i++] = prop_atoms.net_wm_state_hidden;
252     supported[i++] = prop_atoms.net_wm_state_fullscreen;
253     supported[i++] = prop_atoms.net_wm_state_above;
254     supported[i++] = prop_atoms.net_wm_state_below;
255     supported[i++] = prop_atoms.net_moveresize_window;
256     supported[i++] = prop_atoms.net_wm_moveresize;
257     supported[i++] = prop_atoms.ob_wm_state_undecorated;
258     g_assert(i == num_support);
259 /*
260   supported[] = prop_atoms.net_wm_action_stick;
261 */
262
263     PROP_SETA32(RootWindow(ob_display, ob_screen),
264                 net_supported, atom, supported, num_support);
265     g_free(supported);
266
267     return TRUE;
268 }
269
270 void screen_startup(gboolean reconfig)
271 {
272     GSList *it;
273     guint i;
274
275     desktop_cycle_popup = pager_popup_new(FALSE);
276
277     if (!reconfig)
278         /* get the initial size */
279         screen_resize();
280
281     /* set the names */
282     screen_desktop_names = g_new(char*,
283                                  g_slist_length(config_desktops_names) + 1);
284     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
285         screen_desktop_names[i] = it->data; /* dont strdup */
286     screen_desktop_names[i] = NULL;
287     PROP_SETSS(RootWindow(ob_display, ob_screen),
288                net_desktop_names, screen_desktop_names);
289     g_free(screen_desktop_names); /* dont free the individual strings */
290     screen_desktop_names = NULL;
291
292     if (!reconfig)
293         screen_num_desktops = 0;
294     screen_set_num_desktops(config_desktops_num);
295     if (!reconfig) {
296         screen_set_desktop(0);
297
298         /* don't start in showing-desktop mode */
299         screen_showing_desktop = FALSE;
300         PROP_SET32(RootWindow(ob_display, ob_screen),
301                    net_showing_desktop, cardinal, screen_showing_desktop);
302
303         screen_update_layout();
304     }
305 }
306
307 void screen_shutdown(gboolean reconfig)
308 {
309     Rect **r;
310
311     pager_popup_free(desktop_cycle_popup);
312
313     if (!reconfig) {
314         XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
315                      NoEventMask);
316
317         /* we're not running here no more! */
318         PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
319         /* not without us */
320         PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
321         /* don't keep this mode */
322         PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
323
324         XDestroyWindow(ob_display, screen_support_win);
325     }
326
327     g_strfreev(screen_desktop_names);
328     screen_desktop_names = NULL;
329     for (r = area; *r; ++r)
330         g_free(*r);
331     g_free(area);
332     area = NULL;
333 }
334
335 void screen_resize()
336 {
337     static int oldw = 0, oldh = 0;
338     int w, h;
339     GList *it;
340     guint32 geometry[2];
341
342     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
343     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
344
345     if (w == oldw && h == oldh) return;
346
347     oldw = w; oldh = h;
348
349     /* Set the _NET_DESKTOP_GEOMETRY hint */
350     screen_physical_size.width = geometry[0] = w;
351     screen_physical_size.height = geometry[1] = h;
352     PROP_SETA32(RootWindow(ob_display, ob_screen),
353                 net_desktop_geometry, cardinal, geometry, 2);
354
355     if (ob_state() == OB_STATE_STARTING)
356         return;
357
358     screen_update_areas();
359     dock_configure();
360
361     for (it = client_list; it; it = it->next)
362         client_move_onscreen(it->data, FALSE);
363 }
364
365 void screen_set_num_desktops(guint num)
366 {
367     guint i, old;
368     guint32 *viewport;
369     GList *it;
370
371     g_assert(num > 0);
372
373     if (screen_num_desktops == num) return;
374
375     old = screen_num_desktops;
376     screen_num_desktops = num;
377     PROP_SET32(RootWindow(ob_display, ob_screen),
378                net_number_of_desktops, cardinal, num);
379
380     /* set the viewport hint */
381     viewport = g_new0(guint32, num * 2);
382     PROP_SETA32(RootWindow(ob_display, ob_screen),
383                 net_desktop_viewport, cardinal, viewport, num * 2);
384     g_free(viewport);
385
386     /* the number of rows/columns will differ */
387     screen_update_layout();
388
389     /* may be some unnamed desktops that we need to fill in with names */
390     screen_update_desktop_names();
391
392     /* move windows on desktops that will no longer exist! */
393     for (it = client_list; it != NULL; it = it->next) {
394         ObClient *c = it->data;
395         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
396             client_set_desktop(c, num - 1, FALSE);
397     }
398  
399     /* change our struts/area to match (after moving windows) */
400     screen_update_areas();
401
402     /* change our desktop if we're on one that no longer exists! */
403     if (screen_desktop >= screen_num_desktops)
404         screen_set_desktop(num - 1);
405
406    /* update the focus lists */
407     /* free our lists for the desktops which have disappeared */
408     for (i = num; i < old; ++i)
409         g_list_free(focus_order[i]);
410     /* realloc the array */
411     focus_order = g_renew(GList*, focus_order, num);
412     /* set the new lists to be empty */
413     for (i = old; i < num; ++i)
414         focus_order[i] = NULL;
415 }
416
417 void screen_set_desktop(guint num)
418 {
419     GList *it;
420     guint old;
421      
422     g_assert(num < screen_num_desktops);
423
424     old = screen_desktop;
425     screen_desktop = num;
426     PROP_SET32(RootWindow(ob_display, ob_screen),
427                net_current_desktop, cardinal, num);
428
429     if (old == num) return;
430
431     screen_last_desktop = old;
432
433     ob_debug("Moving to desktop %d\n", num+1);
434
435     if (moveresize_client)
436         client_set_desktop(moveresize_client, num, TRUE);
437
438     /* show windows before hiding the rest to lessen the enter/leave events */
439
440     /* show windows from top to bottom */
441     for (it = stacking_list; it != NULL; it = it->next) {
442         if (WINDOW_IS_CLIENT(it->data)) {
443             ObClient *c = it->data;
444             if (!c->frame->visible && client_should_show(c))
445                 frame_show(c->frame);
446         }
447     }
448
449     /* hide windows from bottom to top */
450     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
451         if (WINDOW_IS_CLIENT(it->data)) {
452             ObClient *c = it->data;
453             if (c->frame->visible && !client_should_show(c))
454                 frame_hide(c->frame);
455         }
456     }
457
458     event_ignore_queued_enters();
459
460     focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
461 }
462
463 static void get_row_col(guint d, guint *r, guint *c)
464 {
465     switch (screen_desktop_layout.orientation) {
466     case OB_ORIENTATION_HORZ:
467         switch (screen_desktop_layout.start_corner) {
468         case OB_CORNER_TOPLEFT:
469             *r = d / screen_desktop_layout.columns;
470             *c = d % screen_desktop_layout.columns;
471             break;
472         case OB_CORNER_BOTTOMLEFT:
473             *r = screen_desktop_layout.rows - 1 -
474                 d / screen_desktop_layout.columns;
475             *c = d % screen_desktop_layout.columns;
476             break;
477         case OB_CORNER_TOPRIGHT:
478             *r = d / screen_desktop_layout.columns;
479             *c = screen_desktop_layout.columns - 1 -
480                 d % screen_desktop_layout.columns;
481             break;
482         case OB_CORNER_BOTTOMRIGHT:
483             *r = screen_desktop_layout.rows - 1 -
484                 d / screen_desktop_layout.columns;
485             *c = screen_desktop_layout.columns - 1 -
486                 d % screen_desktop_layout.columns;
487             break;
488         }
489         break;
490     case OB_ORIENTATION_VERT:
491         switch (screen_desktop_layout.start_corner) {
492         case OB_CORNER_TOPLEFT:
493             *r = d % screen_desktop_layout.rows;
494             *c = d / screen_desktop_layout.rows;
495             break;
496         case OB_CORNER_BOTTOMLEFT:
497             *r = screen_desktop_layout.rows - 1 -
498                 d % screen_desktop_layout.rows;
499             *c = d / screen_desktop_layout.rows;
500             break;
501         case OB_CORNER_TOPRIGHT:
502             *r = d % screen_desktop_layout.rows;
503             *c = screen_desktop_layout.columns - 1 -
504                 d / screen_desktop_layout.rows;
505             break;
506         case OB_CORNER_BOTTOMRIGHT:
507             *r = screen_desktop_layout.rows - 1 -
508                 d % screen_desktop_layout.rows;
509             *c = screen_desktop_layout.columns - 1 -
510                 d / screen_desktop_layout.rows;
511             break;
512         }
513         break;
514     }
515 }
516
517 static guint translate_row_col(guint r, guint c)
518 {
519     switch (screen_desktop_layout.orientation) {
520     case OB_ORIENTATION_HORZ:
521         switch (screen_desktop_layout.start_corner) {
522         case OB_CORNER_TOPLEFT:
523             return r % screen_desktop_layout.rows *
524                 screen_desktop_layout.columns +
525                 c % screen_desktop_layout.columns;
526         case OB_CORNER_BOTTOMLEFT:
527             return (screen_desktop_layout.rows - 1 -
528                     r % screen_desktop_layout.rows) *
529                 screen_desktop_layout.columns +
530                 c % screen_desktop_layout.columns;
531         case OB_CORNER_TOPRIGHT:
532             return r % screen_desktop_layout.rows *
533                 screen_desktop_layout.columns +
534                 (screen_desktop_layout.columns - 1 -
535                  c % screen_desktop_layout.columns);
536         case OB_CORNER_BOTTOMRIGHT:
537             return (screen_desktop_layout.rows - 1 -
538                     r % screen_desktop_layout.rows) *
539                 screen_desktop_layout.columns +
540                 (screen_desktop_layout.columns - 1 -
541                  c % screen_desktop_layout.columns);
542         }
543     case OB_ORIENTATION_VERT:
544         switch (screen_desktop_layout.start_corner) {
545         case OB_CORNER_TOPLEFT:
546             return c % screen_desktop_layout.columns *
547                 screen_desktop_layout.rows +
548                 r % screen_desktop_layout.rows;
549         case OB_CORNER_BOTTOMLEFT:
550             return c % screen_desktop_layout.columns *
551                 screen_desktop_layout.rows +
552                 (screen_desktop_layout.rows - 1 -
553                  r % screen_desktop_layout.rows);
554         case OB_CORNER_TOPRIGHT:
555             return (screen_desktop_layout.columns - 1 -
556                     c % screen_desktop_layout.columns) *
557                 screen_desktop_layout.rows +
558                 r % screen_desktop_layout.rows;
559         case OB_CORNER_BOTTOMRIGHT:
560             return (screen_desktop_layout.columns - 1 -
561                     c % screen_desktop_layout.columns) *
562                 screen_desktop_layout.rows +
563                 (screen_desktop_layout.rows - 1 -
564                  r % screen_desktop_layout.rows);
565         }
566     }
567     g_assert_not_reached();
568     return 0;
569 }
570
571 void screen_desktop_popup(guint d, gboolean show)
572 {
573     Rect *a;
574
575     if (!show || !config_dialog_desktop) {
576         pager_popup_hide(desktop_cycle_popup);
577     } else {
578         a = screen_physical_area_monitor(0);
579         pager_popup_position(desktop_cycle_popup, CenterGravity,
580                              a->x + a->width / 2, a->y + a->height / 2);
581         /* XXX the size and the font extents need to be related on some level
582          */
583         pager_popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
584
585         pager_popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
586
587         pager_popup_show(desktop_cycle_popup, screen_desktop_names[d], d);
588     }
589 }
590
591 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
592                            gboolean dialog, gboolean done, gboolean cancel)
593 {
594     static gboolean first = TRUE;
595     static gboolean lin;
596     static guint origd, d;
597     guint r, c;
598
599     if (cancel) {
600         d = origd;
601         goto done_cycle;
602     } else if (done && dialog) {
603         goto done_cycle;
604     }
605     if (first) {
606         first = FALSE;
607         lin = linear;
608         d = origd = screen_desktop;
609     }
610
611     get_row_col(d, &r, &c);
612
613     if (lin) {
614         switch (dir) {
615         case OB_DIRECTION_EAST:
616             if (d < screen_num_desktops - 1)
617                 ++d;
618             else if (wrap)
619                 d = 0;
620             break;
621         case OB_DIRECTION_WEST:
622             if (d > 0)
623                 --d;
624             else if (wrap)
625                 d = screen_num_desktops - 1;
626             break;
627         default:
628             assert(0);
629             return screen_desktop;
630         }
631     } else {
632         switch (dir) {
633         case OB_DIRECTION_EAST:
634             ++c;
635             if (c >= screen_desktop_layout.columns) {
636                 if (!wrap) return d = screen_desktop;
637                 c = 0;
638             }
639             d = translate_row_col(r, c);
640             if (d >= screen_num_desktops) {
641                 if (!wrap) return d = screen_desktop;
642                 ++c;
643             }
644             break;
645         case OB_DIRECTION_WEST:
646             --c;
647             if (c >= screen_desktop_layout.columns) {
648                 if (!wrap) return d = screen_desktop;
649                 c = screen_desktop_layout.columns - 1;
650             }
651             d = translate_row_col(r, c);
652             if (d >= screen_num_desktops) {
653                 if (!wrap) return d = screen_desktop;
654                 --c;
655             }
656             break;
657         case OB_DIRECTION_SOUTH:
658             ++r;
659             if (r >= screen_desktop_layout.rows) {
660                 if (!wrap) return d = screen_desktop;
661                 r = 0;
662             }
663             d = translate_row_col(r, c);
664             if (d >= screen_num_desktops) {
665                 if (!wrap) return d = screen_desktop;
666                 ++r;
667             }
668             break;
669         case OB_DIRECTION_NORTH:
670             --r;
671             if (r >= screen_desktop_layout.rows) {
672                 if (!wrap) return d = screen_desktop;
673                 r = screen_desktop_layout.rows - 1;
674             }
675             d = translate_row_col(r, c);
676             if (d >= screen_num_desktops) {
677                 if (!wrap) return d = screen_desktop;
678                 --r;
679             }
680             break;
681         default:
682             assert(0);
683             return d = screen_desktop;
684         }
685
686         d = translate_row_col(r, c);
687     }
688
689     if (dialog) {
690         screen_desktop_popup(d, TRUE);
691         return d;
692     }
693
694 done_cycle:
695     first = TRUE;
696
697     screen_desktop_popup(0, FALSE);
698
699     return d;
700 }
701
702 void screen_update_layout()
703 {
704     ObOrientation orient;
705     ObCorner corner;
706     guint rows;
707     guint cols;
708     guint32 *data;
709     guint num;
710     gboolean valid = FALSE;
711
712     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
713                     net_desktop_layout, cardinal, &data, &num)) {
714         if (num == 3 || num == 4) {
715
716             if (data[0] == prop_atoms.net_wm_orientation_vert)
717                 orient = OB_ORIENTATION_VERT;
718             else if (data[0] == prop_atoms.net_wm_orientation_horz)
719                 orient = OB_ORIENTATION_HORZ;
720             else
721                 goto screen_update_layout_bail;
722
723             if (num < 4)
724                 corner = OB_CORNER_TOPLEFT;
725             else {
726                 if (data[3] == prop_atoms.net_wm_topleft)
727                     corner = OB_CORNER_TOPLEFT;
728                 else if (data[3] == prop_atoms.net_wm_topright)
729                     corner = OB_CORNER_TOPRIGHT;
730                 else if (data[3] == prop_atoms.net_wm_bottomright)
731                     corner = OB_CORNER_BOTTOMRIGHT;
732                 else if (data[3] == prop_atoms.net_wm_bottomleft)
733                     corner = OB_CORNER_BOTTOMLEFT;
734                 else
735                     goto screen_update_layout_bail;
736             }
737
738             cols = data[1];
739             rows = data[2];
740
741             /* fill in a zero rows/columns */
742             if ((cols == 0 && rows == 0)) { /* both 0's is bad data.. */
743                 goto screen_update_layout_bail;
744             } else {
745                 if (cols == 0) {
746                     cols = screen_num_desktops / rows;
747                     if (rows * cols < screen_num_desktops)
748                         cols++;
749                     if (rows * cols >= screen_num_desktops + cols)
750                         rows--;
751                 } else if (rows == 0) {
752                     rows = screen_num_desktops / cols;
753                     if (cols * rows < screen_num_desktops)
754                         rows++;
755                     if (cols * rows >= screen_num_desktops + rows)
756                         cols--;
757                 }
758             }
759
760             /* bounds checking */
761             if (orient == OB_ORIENTATION_HORZ) {
762                 cols = MIN(screen_num_desktops, cols);
763                 rows = MIN(rows, (screen_num_desktops + cols - 1) / cols);
764                 cols = screen_num_desktops / rows +
765                     !!(screen_num_desktops % rows);
766             } else {
767                 rows = MIN(screen_num_desktops, rows);
768                 cols = MIN(cols, (screen_num_desktops + rows - 1) / rows);
769                 rows = screen_num_desktops / cols +
770                     !!(screen_num_desktops % cols);
771             }
772
773             valid = TRUE;
774         }
775     screen_update_layout_bail:
776         g_free(data);
777     }
778
779     if (!valid) {
780         /* defaults */
781         orient = OB_ORIENTATION_HORZ;
782         corner = OB_CORNER_TOPLEFT;
783         rows = 1;
784         cols = screen_num_desktops;
785     }
786
787     screen_desktop_layout.orientation = orient;
788     screen_desktop_layout.start_corner = corner;
789     screen_desktop_layout.rows = rows;
790     screen_desktop_layout.columns = cols;
791 }
792
793 void screen_update_desktop_names()
794 {
795     guint i;
796
797     /* empty the array */
798     g_strfreev(screen_desktop_names);
799     screen_desktop_names = NULL;
800
801     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
802                    net_desktop_names, utf8, &screen_desktop_names))
803         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
804     else
805         i = 0;
806     if (i <= screen_num_desktops) {
807         screen_desktop_names = g_renew(char*, screen_desktop_names,
808                                        screen_num_desktops + 1);
809         screen_desktop_names[screen_num_desktops] = NULL;
810         for (; i < screen_num_desktops; ++i)
811             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
812     }
813 }
814
815 void screen_show_desktop(gboolean show)
816 {
817     GList *it;
818      
819     if (show == screen_showing_desktop) return; /* no change */
820
821     screen_showing_desktop = show;
822
823     if (show) {
824         /* bottom to top */
825         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
826             if (WINDOW_IS_CLIENT(it->data)) {
827                 ObClient *client = it->data;
828                 if (client->frame->visible && !client_should_show(client))
829                     frame_hide(client->frame);
830             }
831         }
832     } else {
833         /* top to bottom */
834         for (it = stacking_list; it != NULL; it = it->next) {
835             if (WINDOW_IS_CLIENT(it->data)) {
836                 ObClient *client = it->data;
837                 if (!client->frame->visible && client_should_show(client))
838                     frame_show(client->frame);
839             }
840         }
841     }
842
843     if (show) {
844         /* focus desktop */
845         for (it = focus_order[screen_desktop]; it; it = it->next)
846             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
847                 client_focus(it->data))
848                 break;
849     } else {
850         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
851     }
852
853     show = !!show; /* make it boolean */
854     PROP_SET32(RootWindow(ob_display, ob_screen),
855                net_showing_desktop, cardinal, show);
856 }
857
858 void screen_install_colormap(ObClient *client, gboolean install)
859 {
860     XWindowAttributes wa;
861
862     if (client == NULL) {
863         if (install)
864             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
865         else
866             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
867     } else {
868         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
869             wa.colormap != None) {
870             xerror_set_ignore(TRUE);
871             if (install)
872                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
873             else
874                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
875             xerror_set_ignore(FALSE);
876         }
877     }
878 }
879
880 static inline void
881 screen_area_add_strut_left(const StrutPartial *s, const Rect *monitor_area,
882                            gint edge, Strut *ret)
883 {
884     if (s->left &&
885         ((s->left_end <= s->left_start) ||
886          (RECT_TOP(*monitor_area) < s->left_end &&
887           RECT_BOTTOM(*monitor_area) > s->left_start)))
888         ret->left = MAX(ret->left, edge);
889 }
890
891 static inline void
892 screen_area_add_strut_top(const StrutPartial *s, const Rect *monitor_area,
893                           gint edge, Strut *ret)
894 {
895     if (s->top &&
896         ((s->top_end <= s->top_start) ||
897          (RECT_LEFT(*monitor_area) < s->top_end &&
898           RECT_RIGHT(*monitor_area) > s->top_start)))
899         ret->top = MAX(ret->top, edge);
900 }
901
902 static inline void
903 screen_area_add_strut_right(const StrutPartial *s, const Rect *monitor_area,
904                             gint edge, Strut *ret)
905 {
906     if (s->right &&
907         ((s->right_end <= s->right_start) ||
908          (RECT_TOP(*monitor_area) < s->right_end &&
909           RECT_BOTTOM(*monitor_area) > s->right_start)))
910         ret->right = MAX(ret->right, edge);
911 }
912
913 static inline void
914 screen_area_add_strut_bottom(const StrutPartial *s, const Rect *monitor_area,
915                              gint edge, Strut *ret)
916 {
917     if (s->bottom &&
918         ((s->bottom_end <= s->bottom_start) ||
919          (RECT_LEFT(*monitor_area) < s->bottom_end &&
920           RECT_RIGHT(*monitor_area) > s->bottom_start)))
921         ret->bottom = MAX(ret->bottom, edge);
922 }
923
924 void screen_update_areas()
925 {
926     guint i, x;
927     guint32 *dims;
928     GList *it;
929     gint o;
930
931     g_free(monitor_area);
932     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
933
934     if (area) {
935         for (i = 0; area[i]; ++i)
936             g_free(area[i]);
937         g_free(area);
938     }
939
940     area = g_new(Rect*, screen_num_desktops + 2);
941     for (i = 0; i < screen_num_desktops + 1; ++i)
942         area[i] = g_new0(Rect, screen_num_monitors + 1);
943     area[i] = NULL;
944      
945     dims = g_new(guint32, 4 * screen_num_desktops);
946
947     for (i = 0; i < screen_num_desktops + 1; ++i) {
948         Strut *struts;
949         gint l, r, t, b;
950
951         struts = g_new0(Strut, screen_num_monitors);
952
953         /* calc the xinerama areas */
954         for (x = 0; x < screen_num_monitors; ++x) {
955             area[i][x] = monitor_area[x];
956             if (x == 0) {
957                 l = monitor_area[x].x;
958                 t = monitor_area[x].y;
959                 r = monitor_area[x].x + monitor_area[x].width - 1;
960                 b = monitor_area[x].y + monitor_area[x].height - 1;
961             } else {
962                 l = MIN(l, monitor_area[x].x);
963                 t = MIN(t, monitor_area[x].y);
964                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
965                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
966             }
967         }
968         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
969
970         /* apply the struts */
971
972         /* find the left-most xin heads, i do this in 2 loops :| */
973         o = area[i][0].x;
974         for (x = 1; x < screen_num_monitors; ++x)
975             o = MIN(o, area[i][x].x);
976
977         for (x = 0; x < screen_num_monitors; ++x) {
978             for (it = client_list; it; it = it->next) {
979                 ObClient *c = it->data;
980                 screen_area_add_strut_left(&c->strut,
981                                            &monitor_area[x],
982                                            o + c->strut.left - area[i][x].x,
983                                            &struts[x]);
984             }
985             screen_area_add_strut_left(&dock_strut,
986                                        &monitor_area[x],
987                                        o + dock_strut.left - area[i][x].x,
988                                        &struts[x]);
989
990             area[i][x].x += struts[x].left;
991             area[i][x].width -= struts[x].left;
992         }
993
994         /* find the top-most xin heads, i do this in 2 loops :| */
995         o = area[i][0].y;
996         for (x = 1; x < screen_num_monitors; ++x)
997             o = MIN(o, area[i][x].y);
998
999         for (x = 0; x < screen_num_monitors; ++x) {
1000             for (it = client_list; it; it = it->next) {
1001                 ObClient *c = it->data;
1002                 screen_area_add_strut_top(&c->strut,
1003                                            &monitor_area[x],
1004                                            o + c->strut.top - area[i][x].y,
1005                                            &struts[x]);
1006             }
1007             screen_area_add_strut_top(&dock_strut,
1008                                       &monitor_area[x],
1009                                       o + dock_strut.top - area[i][x].y,
1010                                       &struts[x]);
1011
1012             area[i][x].y += struts[x].top;
1013             area[i][x].height -= struts[x].top;
1014         }
1015
1016         /* find the right-most xin heads, i do this in 2 loops :| */
1017         o = area[i][0].x + area[i][0].width - 1;
1018         for (x = 1; x < screen_num_monitors; ++x)
1019             o = MAX(o, area[i][x].x + area[i][x].width - 1);
1020
1021         for (x = 0; x < screen_num_monitors; ++x) {
1022             for (it = client_list; it; it = it->next) {
1023                 ObClient *c = it->data;
1024                 screen_area_add_strut_right(&c->strut,
1025                                            &monitor_area[x],
1026                                            (area[i][x].x +
1027                                             area[i][x].width - 1) -
1028                                             (o - c->strut.right),
1029                                             &struts[x]);
1030             }
1031             screen_area_add_strut_right(&dock_strut,
1032                                         &monitor_area[x],
1033                                         (area[i][x].x +
1034                                          area[i][x].width - 1) -
1035                                         (o - dock_strut.right),
1036                                         &struts[x]);
1037
1038             area[i][x].width -= struts[x].right;
1039         }
1040
1041         /* find the bottom-most xin heads, i do this in 2 loops :| */
1042         o = area[i][0].y + area[i][0].height - 1;
1043         for (x = 1; x < screen_num_monitors; ++x)
1044             o = MAX(o, area[i][x].y + area[i][x].height - 1);
1045
1046         for (x = 0; x < screen_num_monitors; ++x) {
1047             for (it = client_list; it; it = it->next) {
1048                 ObClient *c = it->data;
1049                 screen_area_add_strut_bottom(&c->strut,
1050                                              &monitor_area[x],
1051                                              (area[i][x].y +
1052                                               area[i][x].height - 1) - \
1053                                              (o - c->strut.bottom),
1054                                              &struts[x]);
1055             }
1056             screen_area_add_strut_bottom(&dock_strut,
1057                                          &monitor_area[x],
1058                                          (area[i][x].y +
1059                                           area[i][x].height - 1) - \
1060                                          (o - dock_strut.bottom),
1061                                          &struts[x]);
1062
1063             area[i][x].height -= struts[x].bottom;
1064         }
1065
1066         l = RECT_LEFT(area[i][0]);
1067         t = RECT_TOP(area[i][0]);
1068         r = RECT_RIGHT(area[i][0]);
1069         b = RECT_BOTTOM(area[i][0]);
1070         for (x = 1; x < screen_num_monitors; ++x) {
1071             l = MIN(l, RECT_LEFT(area[i][x]));
1072             t = MIN(l, RECT_TOP(area[i][x]));
1073             r = MAX(r, RECT_RIGHT(area[i][x]));
1074             b = MAX(b, RECT_BOTTOM(area[i][x]));
1075         }
1076         RECT_SET(area[i][screen_num_monitors], l, t,
1077                  r - l + 1, b - t + 1);
1078
1079         /* XXX optimize when this is run? */
1080
1081         /* the area has changed, adjust all the maximized 
1082            windows */
1083         for (it = client_list; it; it = it->next) {
1084             ObClient *c = it->data; 
1085             if (i < screen_num_desktops) {
1086                 if (c->desktop == i)
1087                     client_reconfigure(c);
1088             } else if (c->desktop == DESKTOP_ALL)
1089                 client_reconfigure(c);
1090         }
1091         if (i < screen_num_desktops) {
1092             /* don't set these for the 'all desktops' area */
1093             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1094             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1095             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1096             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1097         }
1098
1099         g_free(struts);
1100     }
1101
1102     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1103                 dims, 4 * screen_num_desktops);
1104
1105     g_free(dims);
1106 }
1107
1108 Rect *screen_area(guint desktop)
1109 {
1110     return screen_area_monitor(desktop, screen_num_monitors);
1111 }
1112
1113 Rect *screen_area_monitor(guint desktop, guint head)
1114 {
1115     if (head > screen_num_monitors)
1116         return NULL;
1117     if (desktop >= screen_num_desktops) {
1118         if (desktop == DESKTOP_ALL)
1119             return &area[screen_num_desktops][head];
1120         return NULL;
1121     }
1122     return &area[desktop][head];
1123 }
1124
1125 Rect *screen_physical_area()
1126 {
1127     return screen_physical_area_monitor(screen_num_monitors);
1128 }
1129
1130 Rect *screen_physical_area_monitor(guint head)
1131 {
1132     if (head > screen_num_monitors)
1133         return NULL;
1134     return &monitor_area[head];
1135 }
1136
1137 void screen_set_root_cursor()
1138 {
1139     if (sn_app_starting())
1140         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1141                       ob_cursor(OB_CURSOR_BUSY));
1142     else
1143         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1144                       ob_cursor(OB_CURSOR_POINTER));
1145 }
1146
1147 gboolean screen_pointer_pos(int *x, int *y)
1148 {
1149     Window w;
1150     int i;
1151     guint u;
1152
1153     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1154                            &w, &w, x, y, &i, &i, &u);
1155 }