3809e05aacac25e128b33020674dc4096051684a
[dana/openbox.git] / openbox / screen.c
1 #include "debug.h"
2 #include "openbox.h"
3 #include "mainloop.h"
4 #include "dock.h"
5 #include "xerror.h"
6 #include "prop.h"
7 #include "startup.h"
8 #include "grab.h"
9 #include "config.h"
10 #include "screen.h"
11 #include "client.h"
12 #include "frame.h"
13 #include "focus.h"
14 #include "popup.h"
15 #include "extensions.h"
16 #include "render/render.h"
17
18 #ifdef USE_LIBSN
19 #  define SN_API_NOT_YET_FROZEN
20 #  include <libsn/sn.h>
21 #endif
22
23 #include <X11/Xlib.h>
24 #ifdef HAVE_UNISTD_H
25 #  include <sys/types.h>
26 #  include <unistd.h>
27 #endif
28 #include <assert.h>
29
30 /*! The event mask to grab on the root window */
31 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
32                         EnterWindowMask | LeaveWindowMask | \
33                         SubstructureNotifyMask | SubstructureRedirectMask | \
34                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
35
36 guint    screen_num_desktops;
37 guint    screen_num_monitors;
38 guint    screen_desktop;
39 guint    screen_last_desktop;
40 Size     screen_physical_size;
41 gboolean screen_showing_desktop;
42 DesktopLayout screen_desktop_layout;
43 char   **screen_desktop_names;
44 Window   screen_support_win;
45
46 static Rect  **area; /* array of desktop holding array of xinerama areas */
47 static Rect  *monitor_area;
48
49 static Popup *desktop_cycle_popup;
50
51 #ifdef USE_LIBSN
52 static SnMonitorContext *sn_context;
53 static int sn_busy_cnt;
54
55 static void sn_event_func(SnMonitorEvent *event, void *data);
56 #endif
57
58 static void set_root_cursor();
59
60 static gboolean replace_wm()
61 {
62     char *wm_sn;
63     Atom wm_sn_atom;
64     Window current_wm_sn_owner;
65     Time timestamp;
66
67     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
68     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
69     g_free(wm_sn);
70
71     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
72     if (current_wm_sn_owner) {
73         if (!ob_replace_wm) {
74             g_warning("A window manager is already running on screen %d",
75                       ob_screen);
76             return FALSE;
77         }
78         xerror_set_ignore(TRUE);
79         xerror_occured = FALSE;
80
81         /* We want to find out when the current selection owner dies */
82         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
83         XSync(ob_display, FALSE);
84
85         xerror_set_ignore(FALSE);
86         if (xerror_occured)
87             current_wm_sn_owner = None;
88     }
89
90     {
91         /* Generate a timestamp */
92         XEvent event;
93
94         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
95
96         XChangeProperty(ob_display, screen_support_win,
97                         prop_atoms.wm_class, prop_atoms.string,
98                         8, PropModeAppend, NULL, 0);
99         XWindowEvent(ob_display, screen_support_win,
100                      PropertyChangeMask, &event);
101
102         XSelectInput(ob_display, screen_support_win, NoEventMask);
103
104         timestamp = event.xproperty.time;
105     }
106
107     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
108                        timestamp);
109
110     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
111         g_warning("Could not acquire window manager selection on screen %d",
112                   ob_screen);
113         return FALSE;
114     }
115
116     /* Wait for old window manager to go away */
117     if (current_wm_sn_owner) {
118       XEvent event;
119       gulong wait = 0;
120       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
121
122       while (wait < timeout) {
123           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
124                                 StructureNotifyMask, &event) &&
125               event.type == DestroyNotify)
126               break;
127           g_usleep(G_USEC_PER_SEC / 10);
128           wait += G_USEC_PER_SEC / 10;
129       }
130
131       if (wait >= timeout) {
132           g_warning("Timeout expired while waiting for the current WM to die "
133                     "on screen %d", ob_screen);
134           return FALSE;
135       }
136     }
137
138     /* Send client message indicating that we are now the WM */
139     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
140                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
141
142
143     return TRUE;
144 }
145
146 gboolean screen_annex()
147 {
148     XSetWindowAttributes attrib;
149     pid_t pid;
150     gint i, num_support;
151     guint32 *supported;
152
153     /* create the netwm support window */
154     attrib.override_redirect = TRUE;
155     screen_support_win = XCreateWindow(ob_display,
156                                        RootWindow(ob_display, ob_screen),
157                                        -100, -100, 1, 1, 0,
158                                        CopyFromParent, InputOutput,
159                                        CopyFromParent,
160                                        CWOverrideRedirect, &attrib);
161     XMapRaised(ob_display, screen_support_win);
162
163     if (!replace_wm()) {
164         XDestroyWindow(ob_display, screen_support_win);
165         return FALSE;
166     }
167
168     xerror_set_ignore(TRUE);
169     xerror_occured = FALSE;
170     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
171                  ROOT_EVENTMASK);
172     xerror_set_ignore(FALSE);
173     if (xerror_occured) {
174         g_warning("A window manager is already running on screen %d",
175                   ob_screen);
176
177         XDestroyWindow(ob_display, screen_support_win);
178         return FALSE;
179     }
180
181
182     set_root_cursor();
183
184     /* set the OPENBOX_PID hint */
185     pid = getpid();
186     PROP_SET32(RootWindow(ob_display, ob_screen),
187                openbox_pid, cardinal, pid);
188
189     /* set supporting window */
190     PROP_SET32(RootWindow(ob_display, ob_screen),
191                net_supporting_wm_check, window, screen_support_win);
192
193     /* set properties on the supporting window */
194     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
195     PROP_SET32(screen_support_win, net_supporting_wm_check,
196                window, screen_support_win);
197
198     /* set the _NET_SUPPORTED_ATOMS hint */
199     num_support = 50;
200     i = 0;
201     supported = g_new(guint32, num_support);
202     supported[i++] = prop_atoms.net_current_desktop;
203     supported[i++] = prop_atoms.net_number_of_desktops;
204     supported[i++] = prop_atoms.net_desktop_geometry;
205     supported[i++] = prop_atoms.net_desktop_viewport;
206     supported[i++] = prop_atoms.net_active_window;
207     supported[i++] = prop_atoms.net_workarea;
208     supported[i++] = prop_atoms.net_client_list;
209     supported[i++] = prop_atoms.net_client_list_stacking;
210     supported[i++] = prop_atoms.net_desktop_names;
211     supported[i++] = prop_atoms.net_close_window;
212     supported[i++] = prop_atoms.net_desktop_layout;
213     supported[i++] = prop_atoms.net_showing_desktop;
214     supported[i++] = prop_atoms.net_wm_name;
215     supported[i++] = prop_atoms.net_wm_visible_name;
216     supported[i++] = prop_atoms.net_wm_icon_name;
217     supported[i++] = prop_atoms.net_wm_visible_icon_name;
218     supported[i++] = prop_atoms.net_wm_desktop;
219     supported[i++] = prop_atoms.net_wm_strut;
220     supported[i++] = prop_atoms.net_wm_window_type;
221     supported[i++] = prop_atoms.net_wm_window_type_desktop;
222     supported[i++] = prop_atoms.net_wm_window_type_dock;
223     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
224     supported[i++] = prop_atoms.net_wm_window_type_menu;
225     supported[i++] = prop_atoms.net_wm_window_type_utility;
226     supported[i++] = prop_atoms.net_wm_window_type_splash;
227     supported[i++] = prop_atoms.net_wm_window_type_dialog;
228     supported[i++] = prop_atoms.net_wm_window_type_normal;
229     supported[i++] = prop_atoms.net_wm_allowed_actions;
230     supported[i++] = prop_atoms.net_wm_action_move;
231     supported[i++] = prop_atoms.net_wm_action_resize;
232     supported[i++] = prop_atoms.net_wm_action_minimize;
233     supported[i++] = prop_atoms.net_wm_action_shade;
234     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
235     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
236     supported[i++] = prop_atoms.net_wm_action_fullscreen;
237     supported[i++] = prop_atoms.net_wm_action_change_desktop;
238     supported[i++] = prop_atoms.net_wm_action_close;
239     supported[i++] = prop_atoms.net_wm_state;
240     supported[i++] = prop_atoms.net_wm_state_modal;
241     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
242     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
243     supported[i++] = prop_atoms.net_wm_state_shaded;
244     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
245     supported[i++] = prop_atoms.net_wm_state_skip_pager;
246     supported[i++] = prop_atoms.net_wm_state_hidden;
247     supported[i++] = prop_atoms.net_wm_state_fullscreen;
248     supported[i++] = prop_atoms.net_wm_state_above;
249     supported[i++] = prop_atoms.net_wm_state_below;
250     supported[i++] = prop_atoms.net_moveresize_window;
251     supported[i++] = prop_atoms.net_wm_moveresize;
252     g_assert(i == num_support);
253 /*
254   supported[] = prop_atoms.net_wm_action_stick;
255 */
256
257     PROP_SETA32(RootWindow(ob_display, ob_screen),
258                 net_supported, atom, supported, num_support);
259     g_free(supported);
260
261     return TRUE;
262 }
263
264 void screen_startup()
265 {
266     GSList *it;
267     guint i;
268
269     desktop_cycle_popup = popup_new(FALSE);
270
271     /* get the initial size */
272     screen_resize();
273
274     /* set the names */
275     screen_desktop_names = g_new(char*,
276                                  g_slist_length(config_desktops_names) + 1);
277     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
278         screen_desktop_names[i] = it->data; /* dont strdup */
279     screen_desktop_names[i] = NULL;
280     PROP_SETSS(RootWindow(ob_display, ob_screen),
281                net_desktop_names, screen_desktop_names);
282     g_free(screen_desktop_names); /* dont free the individual strings */
283     screen_desktop_names = NULL;
284
285     screen_num_desktops = 0;
286     screen_set_num_desktops(config_desktops_num);
287     if (startup_desktop >= screen_num_desktops)
288         startup_desktop = 0;
289     screen_desktop = startup_desktop;
290     screen_set_desktop(startup_desktop);
291
292     /* don't start in showing-desktop mode */
293     screen_showing_desktop = FALSE;
294     PROP_SET32(RootWindow(ob_display, ob_screen),
295                net_showing_desktop, cardinal, screen_showing_desktop);
296
297     screen_update_layout();
298
299 #ifdef USE_LIBSN
300     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
301                                         sn_event_func, NULL, NULL);
302     sn_busy_cnt = 0;
303 #endif
304 }
305
306 void screen_shutdown()
307 {
308     Rect **r;
309
310     popup_free(desktop_cycle_popup);
311
312     XSelectInput(ob_display, RootWindow(ob_display, ob_screen), NoEventMask);
313
314     /* we're not running here no more! */
315     PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
316     /* not without us */
317     PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
318     /* don't keep this mode */
319     PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
320
321     XDestroyWindow(ob_display, screen_support_win);
322
323     g_strfreev(screen_desktop_names);
324     for (r = area; *r; ++r)
325         g_free(*r);
326     g_free(area);
327 }
328
329 void screen_resize()
330 {
331     static int oldw = 0, oldh = 0;
332     int w, h;
333     GList *it;
334     guint32 geometry[2];
335
336     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
337     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
338
339     if (w == oldw && h == oldh) return;
340
341     oldw = w; oldh = h;
342
343     /* Set the _NET_DESKTOP_GEOMETRY hint */
344     screen_physical_size.width = geometry[0] = w;
345     screen_physical_size.height = geometry[1] = h;
346     PROP_SETA32(RootWindow(ob_display, ob_screen),
347                 net_desktop_geometry, cardinal, geometry, 2);
348
349     if (ob_state() == OB_STATE_STARTING)
350         return;
351
352     screen_update_areas();
353     dock_configure();
354
355     for (it = client_list; it; it = it->next)
356         client_move_onscreen(it->data, FALSE);
357 }
358
359 void screen_set_num_desktops(guint num)
360 {
361     guint i, old;
362     guint32 *viewport;
363     GList *it;
364
365     g_assert(num > 0);
366
367     old = screen_num_desktops;
368     screen_num_desktops = num;
369     PROP_SET32(RootWindow(ob_display, ob_screen),
370                net_number_of_desktops, cardinal, num);
371
372     /* set the viewport hint */
373     viewport = g_new0(guint32, num * 2);
374     PROP_SETA32(RootWindow(ob_display, ob_screen),
375                 net_desktop_viewport, cardinal, viewport, num * 2);
376     g_free(viewport);
377
378     /* the number of rows/columns will differ */
379     screen_update_layout();
380
381     /* may be some unnamed desktops that we need to fill in with names */
382     screen_update_desktop_names();
383
384     /* update the focus lists */
385     /* free our lists for the desktops which have disappeared */
386     for (i = num; i < old; ++i)
387         g_list_free(focus_order[i]);
388     /* realloc the array */
389     focus_order = g_renew(GList*, focus_order, num);
390     /* set the new lists to be empty */
391     for (i = old; i < num; ++i)
392         focus_order[i] = NULL;
393
394     /* move windows on desktops that will no longer exist! */
395     for (it = client_list; it != NULL; it = it->next) {
396         ObClient *c = it->data;
397         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
398             client_set_desktop(c, num - 1, FALSE);
399     }
400
401     /* change our struts/area to match (after moving windows) */
402     screen_update_areas();
403
404     /* change our desktop if we're on one that no longer exists! */
405     if (screen_desktop >= screen_num_desktops)
406         screen_set_desktop(num - 1);
407 }
408
409 void screen_set_desktop(guint num)
410 {
411     GList *it;
412     guint old;
413     XEvent e;
414      
415     g_assert(num < screen_num_desktops);
416
417     old = screen_desktop;
418     screen_desktop = num;
419     PROP_SET32(RootWindow(ob_display, ob_screen),
420                net_current_desktop, cardinal, num);
421
422     if (old == num) return;
423
424     screen_last_desktop = old;
425
426     ob_debug("Moving to desktop %d\n", num+1);
427
428     /* show windows before hiding the rest to lessen the enter/leave events */
429
430     /* show windows from top to bottom */
431     for (it = stacking_list; it != NULL; it = it->next) {
432         if (WINDOW_IS_CLIENT(it->data)) {
433             ObClient *c = it->data;
434             if (!c->frame->visible && client_should_show(c))
435                 frame_show(c->frame);
436         }
437     }
438
439     /* hide windows from bottom to top */
440     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
441         if (WINDOW_IS_CLIENT(it->data)) {
442             ObClient *c = it->data;
443             if (c->frame->visible && !client_should_show(c))
444                 frame_hide(c->frame);
445         }
446     }
447
448     /* focus the last focused window on the desktop, and ignore enter events
449        from the switch so it doesnt mess with the focus */
450     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
451 #ifdef DEBUG_FOCUS
452     ob_debug("switch fallback\n");
453 #endif
454     focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
455 #ifdef DEBUG_FOCUS
456     ob_debug("/switch fallback\n");
457 #endif
458 }
459
460 static void get_row_col(guint d, guint *r, guint *c)
461 {
462     switch (screen_desktop_layout.orientation) {
463     case OB_ORIENTATION_HORZ:
464         switch (screen_desktop_layout.start_corner) {
465         case OB_CORNER_TOPLEFT:
466             *r = d / screen_desktop_layout.columns;
467             *c = d % screen_desktop_layout.columns;
468             break;
469         case OB_CORNER_BOTTOMLEFT:
470             *r = screen_desktop_layout.rows - 1 -
471                 d / screen_desktop_layout.columns;
472             *c = d % screen_desktop_layout.columns;
473             break;
474         case OB_CORNER_TOPRIGHT:
475             *r = d / screen_desktop_layout.columns;
476             *c = screen_desktop_layout.columns - 1 -
477                 d % screen_desktop_layout.columns;
478             break;
479         case OB_CORNER_BOTTOMRIGHT:
480             *r = screen_desktop_layout.rows - 1 -
481                 d / screen_desktop_layout.columns;
482             *c = screen_desktop_layout.columns - 1 -
483                 d % screen_desktop_layout.columns;
484             break;
485         }
486         break;
487     case OB_ORIENTATION_VERT:
488         switch (screen_desktop_layout.start_corner) {
489         case OB_CORNER_TOPLEFT:
490             *r = d % screen_desktop_layout.rows;
491             *c = d / screen_desktop_layout.rows;
492             break;
493         case OB_CORNER_BOTTOMLEFT:
494             *r = screen_desktop_layout.rows - 1 -
495                 d % screen_desktop_layout.rows;
496             *c = d / screen_desktop_layout.rows;
497             break;
498         case OB_CORNER_TOPRIGHT:
499             *r = d % screen_desktop_layout.rows;
500             *c = screen_desktop_layout.columns - 1 -
501                 d / screen_desktop_layout.rows;
502             break;
503         case OB_CORNER_BOTTOMRIGHT:
504             *r = screen_desktop_layout.rows - 1 -
505                 d % screen_desktop_layout.rows;
506             *c = screen_desktop_layout.columns - 1 -
507                 d / screen_desktop_layout.rows;
508             break;
509         }
510         break;
511     }
512 }
513
514 static guint translate_row_col(guint r, guint c)
515 {
516     switch (screen_desktop_layout.orientation) {
517     case OB_ORIENTATION_HORZ:
518         switch (screen_desktop_layout.start_corner) {
519         case OB_CORNER_TOPLEFT:
520             return r % screen_desktop_layout.rows *
521                 screen_desktop_layout.columns +
522                 c % screen_desktop_layout.columns;
523         case OB_CORNER_BOTTOMLEFT:
524             return (screen_desktop_layout.rows - 1 -
525                     r % screen_desktop_layout.rows) *
526                 screen_desktop_layout.columns +
527                 c % screen_desktop_layout.columns;
528         case OB_CORNER_TOPRIGHT:
529             return r % screen_desktop_layout.rows *
530                 screen_desktop_layout.columns +
531                 (screen_desktop_layout.columns - 1 -
532                  c % screen_desktop_layout.columns);
533         case OB_CORNER_BOTTOMRIGHT:
534             return (screen_desktop_layout.rows - 1 -
535                     r % screen_desktop_layout.rows) *
536                 screen_desktop_layout.columns +
537                 (screen_desktop_layout.columns - 1 -
538                  c % screen_desktop_layout.columns);
539         }
540     case OB_ORIENTATION_VERT:
541         switch (screen_desktop_layout.start_corner) {
542         case OB_CORNER_TOPLEFT:
543             return c % screen_desktop_layout.columns *
544                 screen_desktop_layout.rows +
545                 r % screen_desktop_layout.rows;
546         case OB_CORNER_BOTTOMLEFT:
547             return c % screen_desktop_layout.columns *
548                 screen_desktop_layout.rows +
549                 (screen_desktop_layout.rows - 1 -
550                  r % screen_desktop_layout.rows);
551         case OB_CORNER_TOPRIGHT:
552             return (screen_desktop_layout.columns - 1 -
553                     c % screen_desktop_layout.columns) *
554                 screen_desktop_layout.rows +
555                 r % screen_desktop_layout.rows;
556         case OB_CORNER_BOTTOMRIGHT:
557             return (screen_desktop_layout.columns - 1 -
558                     c % screen_desktop_layout.columns) *
559                 screen_desktop_layout.rows +
560                 (screen_desktop_layout.rows - 1 -
561                  r % screen_desktop_layout.rows);
562         }
563     }
564     g_assert_not_reached();
565     return 0;
566 }
567
568 static void popup_cycle(guint d, gboolean show)
569 {
570     Rect *a;
571
572     if (!show) {
573         popup_hide(desktop_cycle_popup);
574     } else {
575         a = screen_physical_area_monitor(0);
576         popup_position(desktop_cycle_popup, CenterGravity,
577                        a->x + a->width / 2, a->y + a->height / 2);
578         /* XXX the size and the font extents need to be related on some level
579          */
580         popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
581
582         popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
583
584         popup_show(desktop_cycle_popup,
585                    screen_desktop_names[d], NULL);
586     }
587 }
588
589 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
590                            gboolean dialog, gboolean done, gboolean cancel)
591 {
592     static gboolean first = TRUE;
593     static gboolean lin;
594     static guint origd, d;
595     guint r, c;
596
597     if (cancel) {
598         d = origd;
599         goto done_cycle;
600     } else if (done && dialog) {
601         goto done_cycle;
602     }
603     if (first) {
604         first = FALSE;
605         lin = linear;
606         d = origd = screen_desktop;
607     }
608
609     get_row_col(d, &r, &c);
610
611     if (lin) {
612         switch (dir) {
613         case OB_DIRECTION_EAST:
614             if (d < screen_num_desktops - 1)
615                 ++d;
616             else if (wrap)
617                 d = 0;
618             break;
619         case OB_DIRECTION_WEST:
620             if (d > 0)
621                 --d;
622             else if (wrap)
623                 d = screen_num_desktops - 1;
624             break;
625         default:
626             assert(0);
627             return screen_desktop;
628         }
629     } else {
630         switch (dir) {
631         case OB_DIRECTION_EAST:
632             ++c;
633             if (c >= screen_desktop_layout.columns) {
634                 if (!wrap) return d = screen_desktop;
635                 c = 0;
636             }
637             d = translate_row_col(r, c);
638             if (d >= screen_num_desktops) {
639                 if (!wrap) return d = screen_desktop;
640                 ++c;
641             }
642             break;
643         case OB_DIRECTION_WEST:
644             --c;
645             if (c >= screen_desktop_layout.columns) {
646                 if (!wrap) return d = screen_desktop;
647                 c = screen_desktop_layout.columns - 1;
648             }
649             d = translate_row_col(r, c);
650             if (d >= screen_num_desktops) {
651                 if (!wrap) return d = screen_desktop;
652                 --c;
653             }
654             break;
655         case OB_DIRECTION_SOUTH:
656             ++r;
657             if (r >= screen_desktop_layout.rows) {
658                 if (!wrap) return d = screen_desktop;
659                 r = 0;
660             }
661             d = translate_row_col(r, c);
662             if (d >= screen_num_desktops) {
663                 if (!wrap) return d = screen_desktop;
664                 ++r;
665             }
666             break;
667         case OB_DIRECTION_NORTH:
668             --r;
669             if (r >= screen_desktop_layout.rows) {
670                 if (!wrap) return d = screen_desktop;
671                 r = screen_desktop_layout.rows - 1;
672             }
673             d = translate_row_col(r, c);
674             if (d >= screen_num_desktops) {
675                 if (!wrap) return d = screen_desktop;
676                 --r;
677             }
678             break;
679         default:
680             assert(0);
681             return d = screen_desktop;
682         }
683
684         d = translate_row_col(r, c);
685     }
686
687     if (dialog) {
688         popup_cycle(d, TRUE);
689         return d;
690     }
691
692 done_cycle:
693     first = TRUE;
694
695     popup_cycle(0, FALSE);
696
697     return d;
698 }
699
700 void screen_update_layout()
701 {
702     ObOrientation orient;
703     ObCorner corner;
704     guint rows;
705     guint cols;
706     guint32 *data;
707     guint num;
708     gboolean valid = FALSE;
709
710     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
711                     net_desktop_layout, cardinal, &data, &num)) {
712         if (num == 3 || num == 4) {
713
714             if (data[0] == prop_atoms.net_wm_orientation_vert)
715                 orient = OB_ORIENTATION_VERT;
716             else if (data[0] == prop_atoms.net_wm_orientation_horz)
717                 orient = OB_ORIENTATION_HORZ;
718             else
719                 goto screen_update_layout_bail;
720
721             if (num < 4)
722                 corner = OB_CORNER_TOPLEFT;
723             else {
724                 if (data[3] == prop_atoms.net_wm_topleft)
725                     corner = OB_CORNER_TOPLEFT;
726                 else if (data[3] == prop_atoms.net_wm_topright)
727                     corner = OB_CORNER_TOPRIGHT;
728                 else if (data[3] == prop_atoms.net_wm_bottomright)
729                     corner = OB_CORNER_BOTTOMRIGHT;
730                 else if (data[3] == prop_atoms.net_wm_bottomleft)
731                     corner = OB_CORNER_BOTTOMLEFT;
732                 else
733                     goto screen_update_layout_bail;
734             }
735
736             /* fill in a zero rows/columns */
737             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
738                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
739                 goto screen_update_layout_bail;
740             } else {
741                 if (data[1] == 0) {
742                     data[1] = (screen_num_desktops +
743                                screen_num_desktops % data[2]) / data[2];
744                 } else if (data[2] == 0) {
745                     data[2] = (screen_num_desktops +
746                                screen_num_desktops % data[1]) / data[1];
747                 }
748                 cols = data[1];
749                 rows = data[2];
750             }
751
752             /* bounds checking */
753             if (orient == OB_ORIENTATION_HORZ) {
754                 rows = MIN(rows, screen_num_desktops);
755                 cols = MIN(cols, ((screen_num_desktops +
756                                      (screen_num_desktops % rows)) / rows));
757             } else {
758                 cols = MIN(cols, screen_num_desktops);
759                 rows = MIN(rows, ((screen_num_desktops +
760                                      (screen_num_desktops % cols)) / cols));
761             }
762
763             valid = TRUE;
764         }
765     screen_update_layout_bail:
766         g_free(data);
767     }
768
769     if (!valid) {
770         /* defaults */
771         orient = OB_ORIENTATION_HORZ;
772         corner = OB_CORNER_TOPLEFT;
773         rows = 1;
774         cols = screen_num_desktops;
775     }
776
777     screen_desktop_layout.orientation = orient;
778     screen_desktop_layout.start_corner = corner;
779     screen_desktop_layout.rows = rows;
780     screen_desktop_layout.columns = cols;
781 }
782
783 void screen_update_desktop_names()
784 {
785     guint i;
786
787     /* empty the array */
788     g_strfreev(screen_desktop_names);
789     screen_desktop_names = NULL;
790
791     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
792                    net_desktop_names, utf8, &screen_desktop_names))
793         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
794     else
795         i = 0;
796     if (i <= screen_num_desktops) {
797         screen_desktop_names = g_renew(char*, screen_desktop_names,
798                                        screen_num_desktops + 1);
799         screen_desktop_names[screen_num_desktops] = NULL;
800         for (; i < screen_num_desktops; ++i)
801             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
802     }
803 }
804
805 void screen_show_desktop(gboolean show)
806 {
807     GList *it;
808      
809     if (show == screen_showing_desktop) return; /* no change */
810
811     screen_showing_desktop = show;
812
813     if (show) {
814         /* bottom to top */
815         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
816             if (WINDOW_IS_CLIENT(it->data)) {
817                 ObClient *client = it->data;
818                 if (client->frame->visible && !client_should_show(client))
819                     frame_hide(client->frame);
820             }
821         }
822     } else {
823         /* top to bottom */
824         for (it = stacking_list; it != NULL; it = it->next) {
825             if (WINDOW_IS_CLIENT(it->data)) {
826                 ObClient *client = it->data;
827                 if (!client->frame->visible && client_should_show(client))
828                     frame_show(client->frame);
829             }
830         }
831     }
832
833     if (show) {
834         /* focus desktop */
835         for (it = focus_order[screen_desktop]; it; it = it->next)
836             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
837                 client_focus(it->data))
838                 break;
839     } else {
840         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
841     }
842
843     show = !!show; /* make it boolean */
844     PROP_SET32(RootWindow(ob_display, ob_screen),
845                net_showing_desktop, cardinal, show);
846 }
847
848 void screen_install_colormap(ObClient *client, gboolean install)
849 {
850     XWindowAttributes wa;
851
852     if (client == NULL) {
853         if (install)
854             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
855         else
856             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
857     } else {
858         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
859             wa.colormap != None) {
860             xerror_set_ignore(TRUE);
861             if (install)
862                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
863             else
864                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
865             xerror_set_ignore(FALSE);
866         }
867     }
868 }
869
870 void screen_update_areas()
871 {
872     guint i, x;
873     guint32 *dims;
874     GList *it;
875
876     g_free(monitor_area);
877     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
878
879     if (area) {
880         for (i = 0; area[i]; ++i)
881             g_free(area[i]);
882         g_free(area);
883     }
884
885     area = g_new(Rect*, screen_num_desktops + 2);
886     for (i = 0; i < screen_num_desktops + 1; ++i)
887         area[i] = g_new(Rect, screen_num_monitors + 1);
888     area[i] = NULL;
889      
890     dims = g_new(guint32, 4 * screen_num_desktops);
891
892     for (i = 0; i < screen_num_desktops + 1; ++i) {
893         Strut s;
894         int l, r, t, b;
895
896         /* calc the xinerama areas */
897         for (x = 0; x < screen_num_monitors; ++x) {
898             area[i][x] = monitor_area[x];
899             if (x == 0) {
900                 l = monitor_area[x].x;
901                 t = monitor_area[x].y;
902                 r = monitor_area[x].x + monitor_area[x].width - 1;
903                 b = monitor_area[x].y + monitor_area[x].height - 1;
904             } else {
905                 l = MIN(l, monitor_area[x].x);
906                 t = MIN(t, monitor_area[x].y);
907                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
908                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
909             }
910         }
911         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
912
913         /* apply struts */
914         STRUT_SET(s, 0, 0, 0, 0);
915         for (it = client_list; it; it = it->next)
916             STRUT_ADD(s, ((ObClient*)it->data)->strut);
917         STRUT_ADD(s, dock_strut);
918
919         if (s.left) {
920             int o;
921
922             /* find the left-most xin heads, i do this in 2 loops :| */
923             o = area[i][0].x;
924             for (x = 1; x < screen_num_monitors; ++x)
925                 o = MIN(o, area[i][x].x);
926
927             for (x = 0; x < screen_num_monitors; ++x) {
928                 int edge = o + s.left - area[i][x].x;
929                 if (edge > 0) {
930                     area[i][x].x += edge;
931                     area[i][x].width -= edge;
932                 }
933             }
934
935             area[i][screen_num_monitors].x += s.left;
936             area[i][screen_num_monitors].width -= s.left;
937         }
938         if (s.top) {
939             int o;
940
941             /* find the left-most xin heads, i do this in 2 loops :| */
942             o = area[i][0].y;
943             for (x = 1; x < screen_num_monitors; ++x)
944                 o = MIN(o, area[i][x].y);
945
946             for (x = 0; x < screen_num_monitors; ++x) {
947                 int edge = o + s.top - area[i][x].y;
948                 if (edge > 0) {
949                     area[i][x].y += edge;
950                     area[i][x].height -= edge;
951                 }
952             }
953
954             area[i][screen_num_monitors].y += s.top;
955             area[i][screen_num_monitors].height -= s.top;
956         }
957         if (s.right) {
958             int o;
959
960             /* find the bottom-most xin heads, i do this in 2 loops :| */
961             o = area[i][0].x + area[i][0].width - 1;
962             for (x = 1; x < screen_num_monitors; ++x)
963                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
964
965             for (x = 0; x < screen_num_monitors; ++x) {
966                 int edge = (area[i][x].x + area[i][x].width - 1) -
967                     (o - s.right);
968                 if (edge > 0)
969                     area[i][x].width -= edge;
970             }
971
972             area[i][screen_num_monitors].width -= s.right;
973         }
974         if (s.bottom) {
975             int o;
976
977             /* find the bottom-most xin heads, i do this in 2 loops :| */
978             o = area[i][0].y + area[i][0].height - 1;
979             for (x = 1; x < screen_num_monitors; ++x)
980                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
981
982             for (x = 0; x < screen_num_monitors; ++x) {
983                 int edge = (area[i][x].y + area[i][x].height - 1) -
984                     (o - s.bottom);
985                 if (edge > 0)
986                     area[i][x].height -= edge;
987             }
988
989             area[i][screen_num_monitors].height -= s.bottom;
990         }
991
992         /* XXX when dealing with partial struts, if its in a single
993            xinerama area, then only subtract it from that area's space
994         for (x = 0; x < screen_num_monitors; ++x) {
995             GList *it;
996
997
998                do something smart with it for the 'all xinerama areas' one...
999
1000             for (it = client_list; it; it = it->next) {
1001
1002                 XXX if gunna test this shit, then gotta worry about when
1003                 the client moves between xinerama heads..
1004
1005                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
1006                                        area[i][x])) {
1007
1008                 }            
1009             }
1010         }
1011         */
1012
1013         /* XXX optimize when this is run? */
1014
1015         /* the area has changed, adjust all the maximized 
1016            windows */
1017         for (it = client_list; it; it = it->next) {
1018             ObClient *c = it->data; 
1019             if (i < screen_num_desktops) {
1020                 if (c->desktop == i)
1021                     client_reconfigure(c);
1022             } else if (c->desktop == DESKTOP_ALL)
1023                 client_reconfigure(c);
1024         }
1025         if (i < screen_num_desktops) {
1026             /* don't set these for the 'all desktops' area */
1027             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1028             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1029             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1030             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1031         }
1032     }
1033     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1034                 dims, 4 * screen_num_desktops);
1035
1036     g_free(dims);
1037 }
1038
1039 Rect *screen_area(guint desktop)
1040 {
1041     return screen_area_monitor(desktop, screen_num_monitors);
1042 }
1043
1044 Rect *screen_area_monitor(guint desktop, guint head)
1045 {
1046     if (head > screen_num_monitors)
1047         return NULL;
1048     if (desktop >= screen_num_desktops) {
1049         if (desktop == DESKTOP_ALL)
1050             return &area[screen_num_desktops][head];
1051         return NULL;
1052     }
1053     return &area[desktop][head];
1054 }
1055
1056 Rect *screen_physical_area()
1057 {
1058     return screen_physical_area_monitor(screen_num_monitors);
1059 }
1060
1061 Rect *screen_physical_area_monitor(guint head)
1062 {
1063     if (head > screen_num_monitors)
1064         return NULL;
1065     return &monitor_area[head];
1066 }
1067
1068 static void set_root_cursor()
1069 {
1070 #ifdef USE_LIBSN
1071         if (sn_busy_cnt)
1072             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1073                           ob_cursor(OB_CURSOR_BUSY));
1074         else
1075 #endif
1076             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1077                           ob_cursor(OB_CURSOR_POINTER));
1078 }
1079
1080 #ifdef USE_LIBSN
1081 static gboolean sn_timeout(gpointer data)
1082 {
1083     sn_busy_cnt = 0;
1084
1085     set_root_cursor();
1086
1087     return FALSE; /* don't repeat */
1088 }
1089
1090 static void sn_event_func(SnMonitorEvent *ev, void *data)
1091 {
1092     SnStartupSequence *seq;
1093     const char *seq_id, *bin_name;
1094     int cnt = sn_busy_cnt;
1095
1096     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
1097         return;
1098
1099     seq_id = sn_startup_sequence_get_id(seq);
1100     bin_name = sn_startup_sequence_get_binary_name(seq);
1101     
1102     if (!(seq_id && bin_name))
1103         return;
1104
1105     switch (sn_monitor_event_get_type(ev)) {
1106     case SN_MONITOR_EVENT_INITIATED:
1107         ++sn_busy_cnt;
1108         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1109         /* 30 second timeout for apps to start */
1110         ob_main_loop_timeout_add(ob_main_loop, 30 * G_USEC_PER_SEC,
1111                                  sn_timeout, NULL, NULL);
1112         break;
1113     case SN_MONITOR_EVENT_CHANGED:
1114         break;
1115     case SN_MONITOR_EVENT_COMPLETED:
1116         if (sn_busy_cnt) --sn_busy_cnt;
1117         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1118         break;
1119     case SN_MONITOR_EVENT_CANCELED:
1120         if (sn_busy_cnt) --sn_busy_cnt;
1121         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1122     };
1123
1124     if (sn_busy_cnt != cnt)
1125         set_root_cursor();
1126 }
1127 #endif
1128
1129 gboolean screen_pointer_pos(int *x, int *y)
1130 {
1131     Window w;
1132     int i;
1133     guint u;
1134
1135     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1136                            &w, &w, x, y, &i, &i, &u);
1137 }