make focus_order into one long list instead of having one per desktop. this actually...
[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) 2006        Mikael Magnusson
5    Copyright (c) 2003-2007   Dana Jansens
6
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16
17    See the COPYING file for a copy of the GNU General Public License.
18 */
19
20 #include "debug.h"
21 #include "openbox.h"
22 #include "dock.h"
23 #include "xerror.h"
24 #include "prop.h"
25 #include "grab.h"
26 #include "startupnotify.h"
27 #include "moveresize.h"
28 #include "config.h"
29 #include "screen.h"
30 #include "client.h"
31 #include "frame.h"
32 #include "event.h"
33 #include "focus.h"
34 #include "popup.h"
35 #include "extensions.h"
36 #include "render/render.h"
37
38 #include <X11/Xlib.h>
39 #ifdef HAVE_UNISTD_H
40 #  include <sys/types.h>
41 #  include <unistd.h>
42 #endif
43 #include <assert.h>
44
45 /*! The event mask to grab on the root window */
46 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
47                         EnterWindowMask | LeaveWindowMask | \
48                         SubstructureRedirectMask | \
49                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
50
51 guint    screen_num_desktops;
52 guint    screen_num_monitors;
53 guint    screen_desktop;
54 guint    screen_last_desktop;
55 Size     screen_physical_size;
56 gboolean screen_showing_desktop;
57 DesktopLayout screen_desktop_layout;
58 gchar  **screen_desktop_names;
59 Window   screen_support_win;
60
61 static Rect  **area; /* array of desktop holding array of xinerama areas */
62 static Rect  *monitor_area;
63
64 static ObPagerPopup *desktop_cycle_popup;
65
66 static gboolean replace_wm()
67 {
68     gchar *wm_sn;
69     Atom wm_sn_atom;
70     Window current_wm_sn_owner;
71     Time timestamp;
72
73     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
74     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
75     g_free(wm_sn);
76
77     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
78     if (current_wm_sn_owner == screen_support_win)
79         current_wm_sn_owner = None;
80     if (current_wm_sn_owner) {
81         if (!ob_replace_wm) {
82             g_warning("A window manager is already running on screen %d",
83                       ob_screen);
84             return FALSE;
85         }
86         xerror_set_ignore(TRUE);
87         xerror_occured = FALSE;
88
89         /* We want to find out when the current selection owner dies */
90         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
91         XSync(ob_display, FALSE);
92
93         xerror_set_ignore(FALSE);
94         if (xerror_occured)
95             current_wm_sn_owner = None;
96     }
97
98     {
99         /* Generate a timestamp */
100         XEvent event;
101
102         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
103
104         XChangeProperty(ob_display, screen_support_win,
105                         prop_atoms.wm_class, prop_atoms.string,
106                         8, PropModeAppend, NULL, 0);
107         XWindowEvent(ob_display, screen_support_win,
108                      PropertyChangeMask, &event);
109
110         XSelectInput(ob_display, screen_support_win, NoEventMask);
111
112         timestamp = event.xproperty.time;
113     }
114
115     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
116                        timestamp);
117
118     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
119         g_warning("Could not acquire window manager selection on screen %d",
120                   ob_screen);
121         return FALSE;
122     }
123
124     /* Wait for old window manager to go away */
125     if (current_wm_sn_owner) {
126       XEvent event;
127       gulong wait = 0;
128       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
129
130       while (wait < timeout) {
131           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
132                                 StructureNotifyMask, &event) &&
133               event.type == DestroyNotify)
134               break;
135           g_usleep(G_USEC_PER_SEC / 10);
136           wait += G_USEC_PER_SEC / 10;
137       }
138
139       if (wait >= timeout) {
140           g_warning("Timeout expired while waiting for the current WM to die "
141                     "on screen %d", ob_screen);
142           return FALSE;
143       }
144     }
145
146     /* Send client message indicating that we are now the WM */
147     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
148                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
149
150
151     return TRUE;
152 }
153
154 gboolean screen_annex()
155 {
156     XSetWindowAttributes attrib;
157     pid_t pid;
158     gint i, num_support;
159     gulong *supported;
160
161     /* create the netwm support window */
162     attrib.override_redirect = TRUE;
163     screen_support_win = XCreateWindow(ob_display,
164                                        RootWindow(ob_display, ob_screen),
165                                        -100, -100, 1, 1, 0,
166                                        CopyFromParent, InputOutput,
167                                        CopyFromParent,
168                                        CWOverrideRedirect, &attrib);
169     XMapRaised(ob_display, screen_support_win);
170
171     if (!replace_wm()) {
172         XDestroyWindow(ob_display, screen_support_win);
173         return FALSE;
174     }
175
176     xerror_set_ignore(TRUE);
177     xerror_occured = FALSE;
178     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
179                  ROOT_EVENTMASK);
180     xerror_set_ignore(FALSE);
181     if (xerror_occured) {
182         g_warning("A window manager is already running on screen %d",
183                   ob_screen);
184
185         XDestroyWindow(ob_display, screen_support_win);
186         return FALSE;
187     }
188
189
190     screen_set_root_cursor();
191
192     /* set the OPENBOX_PID hint */
193     pid = getpid();
194     PROP_SET32(RootWindow(ob_display, ob_screen),
195                openbox_pid, cardinal, pid);
196
197     /* set supporting window */
198     PROP_SET32(RootWindow(ob_display, ob_screen),
199                net_supporting_wm_check, window, screen_support_win);
200
201     /* set properties on the supporting window */
202     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
203     PROP_SET32(screen_support_win, net_supporting_wm_check,
204                window, screen_support_win);
205
206     /* set the _NET_SUPPORTED_ATOMS hint */
207     num_support = 55;
208     i = 0;
209     supported = g_new(gulong, num_support);
210     supported[i++] = prop_atoms.net_wm_full_placement;
211     supported[i++] = prop_atoms.net_current_desktop;
212     supported[i++] = prop_atoms.net_number_of_desktops;
213     supported[i++] = prop_atoms.net_desktop_geometry;
214     supported[i++] = prop_atoms.net_desktop_viewport;
215     supported[i++] = prop_atoms.net_active_window;
216     supported[i++] = prop_atoms.net_workarea;
217     supported[i++] = prop_atoms.net_client_list;
218     supported[i++] = prop_atoms.net_client_list_stacking;
219     supported[i++] = prop_atoms.net_desktop_names;
220     supported[i++] = prop_atoms.net_close_window;
221     supported[i++] = prop_atoms.net_desktop_layout;
222     supported[i++] = prop_atoms.net_showing_desktop;
223     supported[i++] = prop_atoms.net_wm_name;
224     supported[i++] = prop_atoms.net_wm_visible_name;
225     supported[i++] = prop_atoms.net_wm_icon_name;
226     supported[i++] = prop_atoms.net_wm_visible_icon_name;
227     supported[i++] = prop_atoms.net_wm_desktop;
228     supported[i++] = prop_atoms.net_wm_strut;
229     supported[i++] = prop_atoms.net_wm_window_type;
230     supported[i++] = prop_atoms.net_wm_window_type_desktop;
231     supported[i++] = prop_atoms.net_wm_window_type_dock;
232     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
233     supported[i++] = prop_atoms.net_wm_window_type_menu;
234     supported[i++] = prop_atoms.net_wm_window_type_utility;
235     supported[i++] = prop_atoms.net_wm_window_type_splash;
236     supported[i++] = prop_atoms.net_wm_window_type_dialog;
237     supported[i++] = prop_atoms.net_wm_window_type_normal;
238     supported[i++] = prop_atoms.net_wm_allowed_actions;
239     supported[i++] = prop_atoms.net_wm_action_move;
240     supported[i++] = prop_atoms.net_wm_action_resize;
241     supported[i++] = prop_atoms.net_wm_action_minimize;
242     supported[i++] = prop_atoms.net_wm_action_shade;
243     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
244     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
245     supported[i++] = prop_atoms.net_wm_action_fullscreen;
246     supported[i++] = prop_atoms.net_wm_action_change_desktop;
247     supported[i++] = prop_atoms.net_wm_action_close;
248     supported[i++] = prop_atoms.net_wm_state;
249     supported[i++] = prop_atoms.net_wm_state_modal;
250     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
251     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
252     supported[i++] = prop_atoms.net_wm_state_shaded;
253     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
254     supported[i++] = prop_atoms.net_wm_state_skip_pager;
255     supported[i++] = prop_atoms.net_wm_state_hidden;
256     supported[i++] = prop_atoms.net_wm_state_fullscreen;
257     supported[i++] = prop_atoms.net_wm_state_above;
258     supported[i++] = prop_atoms.net_wm_state_below;
259     supported[i++] = prop_atoms.net_wm_state_demands_attention;
260     supported[i++] = prop_atoms.net_moveresize_window;
261     supported[i++] = prop_atoms.net_wm_moveresize;
262     supported[i++] = prop_atoms.net_wm_user_time;
263     supported[i++] = prop_atoms.net_frame_extents;
264     supported[i++] = prop_atoms.ob_wm_state_undecorated;
265     g_assert(i == num_support);
266 /*
267   supported[] = prop_atoms.net_wm_action_stick;
268 */
269
270     PROP_SETA32(RootWindow(ob_display, ob_screen),
271                 net_supported, atom, supported, num_support);
272     g_free(supported);
273
274     return TRUE;
275 }
276
277 void screen_startup(gboolean reconfig)
278 {
279     GSList *it;
280     guint i;
281
282     desktop_cycle_popup = pager_popup_new(FALSE);
283
284     if (!reconfig)
285         /* get the initial size */
286         screen_resize();
287
288     /* set the names */
289     screen_desktop_names = g_new(gchar*,
290                                  g_slist_length(config_desktops_names) + 1);
291     for (i = 0, it = config_desktops_names; it; ++i, it = g_slist_next(it))
292         screen_desktop_names[i] = it->data; /* dont strdup */
293     screen_desktop_names[i] = NULL;
294     PROP_SETSS(RootWindow(ob_display, ob_screen),
295                net_desktop_names, screen_desktop_names);
296     g_free(screen_desktop_names); /* dont free the individual strings */
297     screen_desktop_names = NULL;
298
299     if (!reconfig)
300         screen_num_desktops = 0;
301     screen_set_num_desktops(config_desktops_num);
302     if (!reconfig) {
303         screen_set_desktop(MIN(config_screen_firstdesk, screen_num_desktops)
304                            - 1);
305
306         /* don't start in showing-desktop mode */
307         screen_showing_desktop = FALSE;
308         PROP_SET32(RootWindow(ob_display, ob_screen),
309                    net_showing_desktop, cardinal, screen_showing_desktop);
310
311         screen_update_layout();
312     }
313 }
314
315 void screen_shutdown(gboolean reconfig)
316 {
317     Rect **r;
318
319     pager_popup_free(desktop_cycle_popup);
320
321     if (!reconfig) {
322         XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
323                      NoEventMask);
324
325         /* we're not running here no more! */
326         PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
327         /* not without us */
328         PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
329         /* don't keep this mode */
330         PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
331
332         XDestroyWindow(ob_display, screen_support_win);
333     }
334
335     g_strfreev(screen_desktop_names);
336     screen_desktop_names = NULL;
337     for (r = area; *r; ++r)
338         g_free(*r);
339     g_free(area);
340     area = NULL;
341 }
342
343 void screen_resize()
344 {
345     static gint oldw = 0, oldh = 0;
346     gint w, h;
347     GList *it;
348     gulong geometry[2];
349
350     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
351     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
352
353     if (w == oldw && h == oldh) return;
354
355     oldw = w; oldh = h;
356
357     /* Set the _NET_DESKTOP_GEOMETRY hint */
358     screen_physical_size.width = geometry[0] = w;
359     screen_physical_size.height = geometry[1] = h;
360     PROP_SETA32(RootWindow(ob_display, ob_screen),
361                 net_desktop_geometry, cardinal, geometry, 2);
362
363     if (ob_state() == OB_STATE_STARTING)
364         return;
365
366     screen_update_areas();
367     dock_configure();
368
369     for (it = client_list; it; it = g_list_next(it))
370         client_move_onscreen(it->data, FALSE);
371 }
372
373 void screen_set_num_desktops(guint num)
374 {
375     guint old;
376     gulong *viewport;
377     GList *it;
378
379     g_assert(num > 0);
380
381     if (screen_num_desktops == num) return;
382
383     old = screen_num_desktops;
384     screen_num_desktops = num;
385     PROP_SET32(RootWindow(ob_display, ob_screen),
386                net_number_of_desktops, cardinal, num);
387
388     /* set the viewport hint */
389     viewport = g_new0(gulong, num * 2);
390     PROP_SETA32(RootWindow(ob_display, ob_screen),
391                 net_desktop_viewport, cardinal, viewport, num * 2);
392     g_free(viewport);
393
394     /* the number of rows/columns will differ */
395     screen_update_layout();
396
397     /* may be some unnamed desktops that we need to fill in with names */
398     screen_update_desktop_names();
399
400     /* move windows on desktops that will no longer exist! */
401     for (it = client_list; it; it = g_list_next(it)) {
402         ObClient *c = it->data;
403         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
404             client_set_desktop(c, num - 1, FALSE);
405     }
406  
407     /* change our struts/area to match (after moving windows) */
408     screen_update_areas();
409
410     /* change our desktop if we're on one that no longer exists! */
411     if (screen_desktop >= screen_num_desktops)
412         screen_set_desktop(num - 1);
413 }
414
415 void screen_set_desktop(guint num)
416 {
417     GList *it;
418     guint old;
419      
420     g_assert(num < screen_num_desktops);
421
422     old = screen_desktop;
423     screen_desktop = num;
424     PROP_SET32(RootWindow(ob_display, ob_screen),
425                net_current_desktop, cardinal, num);
426
427     if (old == num) return;
428
429     screen_last_desktop = old;
430
431     ob_debug("Moving to desktop %d\n", num+1);
432
433     if (moveresize_client)
434         client_set_desktop(moveresize_client, num, TRUE);
435
436     /* show windows before hiding the rest to lessen the enter/leave events */
437
438     /* show windows from top to bottom */
439     for (it = stacking_list; it; it = g_list_next(it)) {
440         if (WINDOW_IS_CLIENT(it->data)) {
441             ObClient *c = it->data;
442             client_showhide(c);
443         }
444     }
445
446     /* hide windows from bottom to top */
447     for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
448         if (WINDOW_IS_CLIENT(it->data)) {
449             ObClient *c = it->data;
450             client_showhide(c);
451         }
452     }
453
454     event_ignore_queued_enters();
455
456     focus_hilite = focus_fallback_target(TRUE, focus_client);
457     if (focus_hilite) {
458         frame_adjust_focus(focus_hilite->frame, TRUE);
459
460         /*!
461           When this focus_client check is not used, you can end up with races,
462           as demonstrated with gnome-panel, sometmies the window you click on
463           another desktop ends up losing focus cuz of the focus change here.
464         */
465         /*if (!focus_client)*/
466         client_focus(focus_hilite);
467     }
468 }
469
470 static void get_row_col(guint d, guint *r, guint *c)
471 {
472     switch (screen_desktop_layout.orientation) {
473     case OB_ORIENTATION_HORZ:
474         switch (screen_desktop_layout.start_corner) {
475         case OB_CORNER_TOPLEFT:
476             *r = d / screen_desktop_layout.columns;
477             *c = d % screen_desktop_layout.columns;
478             break;
479         case OB_CORNER_BOTTOMLEFT:
480             *r = screen_desktop_layout.rows - 1 -
481                 d / screen_desktop_layout.columns;
482             *c = d % screen_desktop_layout.columns;
483             break;
484         case OB_CORNER_TOPRIGHT:
485             *r = d / screen_desktop_layout.columns;
486             *c = screen_desktop_layout.columns - 1 -
487                 d % screen_desktop_layout.columns;
488             break;
489         case OB_CORNER_BOTTOMRIGHT:
490             *r = screen_desktop_layout.rows - 1 -
491                 d / screen_desktop_layout.columns;
492             *c = screen_desktop_layout.columns - 1 -
493                 d % screen_desktop_layout.columns;
494             break;
495         }
496         break;
497     case OB_ORIENTATION_VERT:
498         switch (screen_desktop_layout.start_corner) {
499         case OB_CORNER_TOPLEFT:
500             *r = d % screen_desktop_layout.rows;
501             *c = d / screen_desktop_layout.rows;
502             break;
503         case OB_CORNER_BOTTOMLEFT:
504             *r = screen_desktop_layout.rows - 1 -
505                 d % screen_desktop_layout.rows;
506             *c = d / screen_desktop_layout.rows;
507             break;
508         case OB_CORNER_TOPRIGHT:
509             *r = d % screen_desktop_layout.rows;
510             *c = screen_desktop_layout.columns - 1 -
511                 d / screen_desktop_layout.rows;
512             break;
513         case OB_CORNER_BOTTOMRIGHT:
514             *r = screen_desktop_layout.rows - 1 -
515                 d % screen_desktop_layout.rows;
516             *c = screen_desktop_layout.columns - 1 -
517                 d / screen_desktop_layout.rows;
518             break;
519         }
520         break;
521     }
522 }
523
524 static guint translate_row_col(guint r, guint c)
525 {
526     switch (screen_desktop_layout.orientation) {
527     case OB_ORIENTATION_HORZ:
528         switch (screen_desktop_layout.start_corner) {
529         case OB_CORNER_TOPLEFT:
530             return r % screen_desktop_layout.rows *
531                 screen_desktop_layout.columns +
532                 c % screen_desktop_layout.columns;
533         case OB_CORNER_BOTTOMLEFT:
534             return (screen_desktop_layout.rows - 1 -
535                     r % screen_desktop_layout.rows) *
536                 screen_desktop_layout.columns +
537                 c % screen_desktop_layout.columns;
538         case OB_CORNER_TOPRIGHT:
539             return r % screen_desktop_layout.rows *
540                 screen_desktop_layout.columns +
541                 (screen_desktop_layout.columns - 1 -
542                  c % screen_desktop_layout.columns);
543         case OB_CORNER_BOTTOMRIGHT:
544             return (screen_desktop_layout.rows - 1 -
545                     r % screen_desktop_layout.rows) *
546                 screen_desktop_layout.columns +
547                 (screen_desktop_layout.columns - 1 -
548                  c % screen_desktop_layout.columns);
549         }
550     case OB_ORIENTATION_VERT:
551         switch (screen_desktop_layout.start_corner) {
552         case OB_CORNER_TOPLEFT:
553             return c % screen_desktop_layout.columns *
554                 screen_desktop_layout.rows +
555                 r % screen_desktop_layout.rows;
556         case OB_CORNER_BOTTOMLEFT:
557             return c % screen_desktop_layout.columns *
558                 screen_desktop_layout.rows +
559                 (screen_desktop_layout.rows - 1 -
560                  r % screen_desktop_layout.rows);
561         case OB_CORNER_TOPRIGHT:
562             return (screen_desktop_layout.columns - 1 -
563                     c % screen_desktop_layout.columns) *
564                 screen_desktop_layout.rows +
565                 r % screen_desktop_layout.rows;
566         case OB_CORNER_BOTTOMRIGHT:
567             return (screen_desktop_layout.columns - 1 -
568                     c % screen_desktop_layout.columns) *
569                 screen_desktop_layout.rows +
570                 (screen_desktop_layout.rows - 1 -
571                  r % screen_desktop_layout.rows);
572         }
573     }
574     g_assert_not_reached();
575     return 0;
576 }
577
578 void screen_desktop_popup(guint d, gboolean show)
579 {
580     Rect *a;
581
582     if (!show) {
583         pager_popup_hide(desktop_cycle_popup);
584     } else {
585         a = screen_physical_area_monitor(0);
586         pager_popup_position(desktop_cycle_popup, CenterGravity,
587                              a->x + a->width / 2, a->y + a->height / 2);
588         /* XXX the size and the font extents need to be related on some level
589          */
590         pager_popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
591
592         pager_popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
593
594         pager_popup_show(desktop_cycle_popup, screen_desktop_names[d], d);
595     }
596 }
597
598 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
599                            gboolean dialog, gboolean done, gboolean cancel)
600 {
601     static gboolean first = TRUE;
602     static guint origd, d;
603     guint r, c;
604
605     if (cancel) {
606         d = origd;
607         goto done_cycle;
608     } else if (done && dialog) {
609         goto done_cycle;
610     }
611     if (first) {
612         first = FALSE;
613         d = origd = screen_desktop;
614     }
615
616     get_row_col(d, &r, &c);
617
618     if (linear) {
619         switch (dir) {
620         case OB_DIRECTION_EAST:
621             if (d < screen_num_desktops - 1)
622                 ++d;
623             else if (wrap)
624                 d = 0;
625             break;
626         case OB_DIRECTION_WEST:
627             if (d > 0)
628                 --d;
629             else if (wrap)
630                 d = screen_num_desktops - 1;
631             break;
632         default:
633             assert(0);
634             return screen_desktop;
635         }
636     } else {
637         switch (dir) {
638         case OB_DIRECTION_EAST:
639             ++c;
640             if (c >= screen_desktop_layout.columns) {
641                 if (wrap) {
642                     c = 0;
643                 } else {
644                     d = screen_desktop;
645                     goto show_cycle_dialog;
646                 }
647             }
648             d = translate_row_col(r, c);
649             if (d >= screen_num_desktops) {
650                 if (wrap) {
651                     ++c;
652                 } else {
653                     d = screen_desktop;
654                     goto show_cycle_dialog;
655                 }
656             }
657             break;
658         case OB_DIRECTION_WEST:
659             --c;
660             if (c >= screen_desktop_layout.columns) {
661                 if (wrap) {
662                     c = screen_desktop_layout.columns - 1;
663                 } else {
664                     d = screen_desktop;
665                     goto show_cycle_dialog;
666                 }
667             }
668             d = translate_row_col(r, c);
669             if (d >= screen_num_desktops) {
670                 if (wrap) {
671                     --c;
672                 } else {
673                     d = screen_desktop;
674                     goto show_cycle_dialog;
675                 }
676             }
677             break;
678         case OB_DIRECTION_SOUTH:
679             ++r;
680             if (r >= screen_desktop_layout.rows) {
681                 if (wrap) {
682                     r = 0;
683                 } else {
684                     d = screen_desktop;
685                     goto show_cycle_dialog;
686                 }
687             }
688             d = translate_row_col(r, c);
689             if (d >= screen_num_desktops) {
690                 if (wrap) {
691                     ++r;
692                 } else {
693                     d = screen_desktop;
694                     goto show_cycle_dialog;
695                 }
696             }
697             break;
698         case OB_DIRECTION_NORTH:
699             --r;
700             if (r >= screen_desktop_layout.rows) {
701                 if (wrap) {
702                     r = screen_desktop_layout.rows - 1;
703                 } else {
704                     d = screen_desktop;
705                     goto show_cycle_dialog;
706                 }
707             }
708             d = translate_row_col(r, c);
709             if (d >= screen_num_desktops) {
710                 if (wrap) {
711                     --r;
712                 } else {
713                     d = screen_desktop;
714                     goto show_cycle_dialog;
715                 }
716             }
717             break;
718         default:
719             assert(0);
720             return d = screen_desktop;
721         }
722
723         d = translate_row_col(r, c);
724     }
725
726 show_cycle_dialog:
727     if (dialog) {
728         screen_desktop_popup(d, TRUE);
729         return d;
730     }
731
732 done_cycle:
733     first = TRUE;
734
735     screen_desktop_popup(0, FALSE);
736
737     return d;
738 }
739
740 void screen_update_layout()
741 {
742     ObOrientation orient;
743     ObCorner corner;
744     guint rows;
745     guint cols;
746     guint32 *data;
747     guint num;
748     gboolean valid = FALSE;
749
750     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
751                     net_desktop_layout, cardinal, &data, &num)) {
752         if (num == 3 || num == 4) {
753
754             if (data[0] == prop_atoms.net_wm_orientation_vert)
755                 orient = OB_ORIENTATION_VERT;
756             else if (data[0] == prop_atoms.net_wm_orientation_horz)
757                 orient = OB_ORIENTATION_HORZ;
758             else
759                 goto screen_update_layout_bail;
760
761             if (num < 4)
762                 corner = OB_CORNER_TOPLEFT;
763             else {
764                 if (data[3] == prop_atoms.net_wm_topleft)
765                     corner = OB_CORNER_TOPLEFT;
766                 else if (data[3] == prop_atoms.net_wm_topright)
767                     corner = OB_CORNER_TOPRIGHT;
768                 else if (data[3] == prop_atoms.net_wm_bottomright)
769                     corner = OB_CORNER_BOTTOMRIGHT;
770                 else if (data[3] == prop_atoms.net_wm_bottomleft)
771                     corner = OB_CORNER_BOTTOMLEFT;
772                 else
773                     goto screen_update_layout_bail;
774             }
775
776             cols = data[1];
777             rows = data[2];
778
779             /* fill in a zero rows/columns */
780             if ((cols == 0 && rows == 0)) { /* both 0's is bad data.. */
781                 goto screen_update_layout_bail;
782             } else {
783                 if (cols == 0) {
784                     cols = screen_num_desktops / rows;
785                     if (rows * cols < screen_num_desktops)
786                         cols++;
787                     if (rows * cols >= screen_num_desktops + cols)
788                         rows--;
789                 } else if (rows == 0) {
790                     rows = screen_num_desktops / cols;
791                     if (cols * rows < screen_num_desktops)
792                         rows++;
793                     if (cols * rows >= screen_num_desktops + rows)
794                         cols--;
795                 }
796             }
797
798             /* bounds checking */
799             if (orient == OB_ORIENTATION_HORZ) {
800                 cols = MIN(screen_num_desktops, cols);
801                 rows = MIN(rows, (screen_num_desktops + cols - 1) / cols);
802                 cols = screen_num_desktops / rows +
803                     !!(screen_num_desktops % rows);
804             } else {
805                 rows = MIN(screen_num_desktops, rows);
806                 cols = MIN(cols, (screen_num_desktops + rows - 1) / rows);
807                 rows = screen_num_desktops / cols +
808                     !!(screen_num_desktops % cols);
809             }
810
811             valid = TRUE;
812         }
813     screen_update_layout_bail:
814         g_free(data);
815     }
816
817     if (!valid) {
818         /* defaults */
819         orient = OB_ORIENTATION_HORZ;
820         corner = OB_CORNER_TOPLEFT;
821         rows = 1;
822         cols = screen_num_desktops;
823     }
824
825     screen_desktop_layout.orientation = orient;
826     screen_desktop_layout.start_corner = corner;
827     screen_desktop_layout.rows = rows;
828     screen_desktop_layout.columns = cols;
829 }
830
831 void screen_update_desktop_names()
832 {
833     guint i;
834
835     /* empty the array */
836     g_strfreev(screen_desktop_names);
837     screen_desktop_names = NULL;
838
839     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
840                    net_desktop_names, utf8, &screen_desktop_names))
841         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
842     else
843         i = 0;
844     if (i <= screen_num_desktops) {
845         screen_desktop_names = g_renew(gchar*, screen_desktop_names,
846                                        screen_num_desktops + 1);
847         screen_desktop_names[screen_num_desktops] = NULL;
848         for (; i < screen_num_desktops; ++i)
849             screen_desktop_names[i] = g_strdup_printf("Desktop %i", i + 1);
850     }
851 }
852
853 void screen_show_desktop(gboolean show)
854 {
855     GList *it;
856      
857     if (show == screen_showing_desktop) return; /* no change */
858
859     screen_showing_desktop = show;
860
861     if (show) {
862         /* bottom to top */
863         for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
864             if (WINDOW_IS_CLIENT(it->data)) {
865                 ObClient *client = it->data;
866                 client_showhide(client);
867             }
868         }
869     } else {
870         /* top to bottom */
871         for (it = stacking_list; it; it = g_list_next(it)) {
872             if (WINDOW_IS_CLIENT(it->data)) {
873                 ObClient *client = it->data;
874                 client_showhide(client);
875             }
876         }
877     }
878
879     if (show) {
880         /* focus desktop */
881         for (it = focus_order; it; it = g_list_next(it)) {
882             ObClient *c = it->data;
883             if (c->type == OB_CLIENT_TYPE_DESKTOP &&
884                 (c->desktop == screen_desktop || c->desktop == DESKTOP_ALL) &&
885                 client_validate(it->data) && client_focus(it->data))
886                 break;
887         }
888     } else {
889         focus_fallback(TRUE);
890     }
891
892     show = !!show; /* make it boolean */
893     PROP_SET32(RootWindow(ob_display, ob_screen),
894                net_showing_desktop, cardinal, show);
895 }
896
897 void screen_install_colormap(ObClient *client, gboolean install)
898 {
899     XWindowAttributes wa;
900
901     if (client == NULL) {
902         if (install)
903             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
904         else
905             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
906     } else {
907         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
908             wa.colormap != None) {
909             xerror_set_ignore(TRUE);
910             if (install)
911                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
912             else
913                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
914             xerror_set_ignore(FALSE);
915         }
916     }
917 }
918
919 static inline void
920 screen_area_add_strut_left(const StrutPartial *s, const Rect *monitor_area,
921                            gint edge, Strut *ret)
922 {
923     if (s->left &&
924         ((s->left_end <= s->left_start) ||
925          (RECT_TOP(*monitor_area) < s->left_end &&
926           RECT_BOTTOM(*monitor_area) > s->left_start)))
927         ret->left = MAX(ret->left, edge);
928 }
929
930 static inline void
931 screen_area_add_strut_top(const StrutPartial *s, const Rect *monitor_area,
932                           gint edge, Strut *ret)
933 {
934     if (s->top &&
935         ((s->top_end <= s->top_start) ||
936          (RECT_LEFT(*monitor_area) < s->top_end &&
937           RECT_RIGHT(*monitor_area) > s->top_start)))
938         ret->top = MAX(ret->top, edge);
939 }
940
941 static inline void
942 screen_area_add_strut_right(const StrutPartial *s, const Rect *monitor_area,
943                             gint edge, Strut *ret)
944 {
945     if (s->right &&
946         ((s->right_end <= s->right_start) ||
947          (RECT_TOP(*monitor_area) < s->right_end &&
948           RECT_BOTTOM(*monitor_area) > s->right_start)))
949         ret->right = MAX(ret->right, edge);
950 }
951
952 static inline void
953 screen_area_add_strut_bottom(const StrutPartial *s, const Rect *monitor_area,
954                              gint edge, Strut *ret)
955 {
956     if (s->bottom &&
957         ((s->bottom_end <= s->bottom_start) ||
958          (RECT_LEFT(*monitor_area) < s->bottom_end &&
959           RECT_RIGHT(*monitor_area) > s->bottom_start)))
960         ret->bottom = MAX(ret->bottom, edge);
961 }
962
963 void screen_update_areas()
964 {
965     guint i, x;
966     gulong *dims;
967     GList *it;
968     gint o;
969
970     g_free(monitor_area);
971     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
972
973     if (area) {
974         for (i = 0; area[i]; ++i)
975             g_free(area[i]);
976         g_free(area);
977     }
978
979     area = g_new(Rect*, screen_num_desktops + 2);
980     for (i = 0; i < screen_num_desktops + 1; ++i)
981         area[i] = g_new0(Rect, screen_num_monitors + 1);
982     area[i] = NULL;
983      
984     dims = g_new(gulong, 4 * screen_num_desktops);
985
986     for (i = 0; i < screen_num_desktops + 1; ++i) {
987         Strut *struts;
988         gint l, r, t, b;
989
990         struts = g_new0(Strut, screen_num_monitors);
991
992         /* calc the xinerama areas */
993         for (x = 0; x < screen_num_monitors; ++x) {
994             area[i][x] = monitor_area[x];
995             if (x == 0) {
996                 l = monitor_area[x].x;
997                 t = monitor_area[x].y;
998                 r = monitor_area[x].x + monitor_area[x].width - 1;
999                 b = monitor_area[x].y + monitor_area[x].height - 1;
1000             } else {
1001                 l = MIN(l, monitor_area[x].x);
1002                 t = MIN(t, monitor_area[x].y);
1003                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
1004                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
1005             }
1006         }
1007         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
1008
1009         /* apply the struts */
1010
1011         /* find the left-most xin heads, i do this in 2 loops :| */
1012         o = area[i][0].x;
1013         for (x = 1; x < screen_num_monitors; ++x)
1014             o = MIN(o, area[i][x].x);
1015
1016         for (x = 0; x < screen_num_monitors; ++x) {
1017             for (it = client_list; it; it = g_list_next(it)) {
1018                 ObClient *c = it->data;
1019                 screen_area_add_strut_left(&c->strut,
1020                                            &monitor_area[x],
1021                                            o + c->strut.left - area[i][x].x,
1022                                            &struts[x]);
1023             }
1024             screen_area_add_strut_left(&dock_strut,
1025                                        &monitor_area[x],
1026                                        o + dock_strut.left - area[i][x].x,
1027                                        &struts[x]);
1028
1029             area[i][x].x += struts[x].left;
1030             area[i][x].width -= struts[x].left;
1031         }
1032
1033         /* find the top-most xin heads, i do this in 2 loops :| */
1034         o = area[i][0].y;
1035         for (x = 1; x < screen_num_monitors; ++x)
1036             o = MIN(o, area[i][x].y);
1037
1038         for (x = 0; x < screen_num_monitors; ++x) {
1039             for (it = client_list; it; it = g_list_next(it)) {
1040                 ObClient *c = it->data;
1041                 screen_area_add_strut_top(&c->strut,
1042                                            &monitor_area[x],
1043                                            o + c->strut.top - area[i][x].y,
1044                                            &struts[x]);
1045             }
1046             screen_area_add_strut_top(&dock_strut,
1047                                       &monitor_area[x],
1048                                       o + dock_strut.top - area[i][x].y,
1049                                       &struts[x]);
1050
1051             area[i][x].y += struts[x].top;
1052             area[i][x].height -= struts[x].top;
1053         }
1054
1055         /* find the right-most xin heads, i do this in 2 loops :| */
1056         o = area[i][0].x + area[i][0].width - 1;
1057         for (x = 1; x < screen_num_monitors; ++x)
1058             o = MAX(o, area[i][x].x + area[i][x].width - 1);
1059
1060         for (x = 0; x < screen_num_monitors; ++x) {
1061             for (it = client_list; it; it = g_list_next(it)) {
1062                 ObClient *c = it->data;
1063                 screen_area_add_strut_right(&c->strut,
1064                                            &monitor_area[x],
1065                                            (area[i][x].x +
1066                                             area[i][x].width - 1) -
1067                                             (o - c->strut.right),
1068                                             &struts[x]);
1069             }
1070             screen_area_add_strut_right(&dock_strut,
1071                                         &monitor_area[x],
1072                                         (area[i][x].x +
1073                                          area[i][x].width - 1) -
1074                                         (o - dock_strut.right),
1075                                         &struts[x]);
1076
1077             area[i][x].width -= struts[x].right;
1078         }
1079
1080         /* find the bottom-most xin heads, i do this in 2 loops :| */
1081         o = area[i][0].y + area[i][0].height - 1;
1082         for (x = 1; x < screen_num_monitors; ++x)
1083             o = MAX(o, area[i][x].y + area[i][x].height - 1);
1084
1085         for (x = 0; x < screen_num_monitors; ++x) {
1086             for (it = client_list; it; it = g_list_next(it)) {
1087                 ObClient *c = it->data;
1088                 screen_area_add_strut_bottom(&c->strut,
1089                                              &monitor_area[x],
1090                                              (area[i][x].y +
1091                                               area[i][x].height - 1) - \
1092                                              (o - c->strut.bottom),
1093                                              &struts[x]);
1094             }
1095             screen_area_add_strut_bottom(&dock_strut,
1096                                          &monitor_area[x],
1097                                          (area[i][x].y +
1098                                           area[i][x].height - 1) - \
1099                                          (o - dock_strut.bottom),
1100                                          &struts[x]);
1101
1102             area[i][x].height -= struts[x].bottom;
1103         }
1104
1105         l = RECT_LEFT(area[i][0]);
1106         t = RECT_TOP(area[i][0]);
1107         r = RECT_RIGHT(area[i][0]);
1108         b = RECT_BOTTOM(area[i][0]);
1109         for (x = 1; x < screen_num_monitors; ++x) {
1110             l = MIN(l, RECT_LEFT(area[i][x]));
1111             t = MIN(l, RECT_TOP(area[i][x]));
1112             r = MAX(r, RECT_RIGHT(area[i][x]));
1113             b = MAX(b, RECT_BOTTOM(area[i][x]));
1114         }
1115         RECT_SET(area[i][screen_num_monitors], l, t,
1116                  r - l + 1, b - t + 1);
1117
1118         /* XXX optimize when this is run? */
1119
1120         /* the area has changed, adjust all the maximized 
1121            windows */
1122         for (it = client_list; it; it = g_list_next(it)) {
1123             ObClient *c = it->data; 
1124             if (i < screen_num_desktops) {
1125                 if (c->desktop == i)
1126                     client_reconfigure(c);
1127             } else if (c->desktop == DESKTOP_ALL)
1128                 client_reconfigure(c);
1129         }
1130         if (i < screen_num_desktops) {
1131             /* don't set these for the 'all desktops' area */
1132             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1133             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1134             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1135             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1136         }
1137
1138         g_free(struts);
1139     }
1140
1141     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1142                 dims, 4 * screen_num_desktops);
1143
1144     g_free(dims);
1145 }
1146
1147 Rect *screen_area(guint desktop)
1148 {
1149     return screen_area_monitor(desktop, screen_num_monitors);
1150 }
1151
1152 Rect *screen_area_monitor(guint desktop, guint head)
1153 {
1154     if (head > screen_num_monitors)
1155         return NULL;
1156     if (desktop >= screen_num_desktops) {
1157         if (desktop == DESKTOP_ALL)
1158             return &area[screen_num_desktops][head];
1159         return NULL;
1160     }
1161     return &area[desktop][head];
1162 }
1163
1164 guint screen_find_monitor(Rect *search)
1165 {
1166     guint i;
1167     guint most = 0;
1168     guint mostv = 0;
1169
1170     for (i = 0; i < screen_num_monitors; ++i) {
1171         Rect *area = screen_physical_area_monitor(i);
1172         if (RECT_INTERSECTS_RECT(*area, *search)) {
1173             Rect r;
1174             guint v;
1175
1176             RECT_SET_INTERSECTION(r, *area, *search);
1177             v = r.width * r.height;
1178
1179             if (v > mostv) {
1180                 mostv = v;
1181                 most = i;
1182             }
1183         }
1184     }
1185     return most;
1186 }
1187
1188 Rect *screen_physical_area()
1189 {
1190     return screen_physical_area_monitor(screen_num_monitors);
1191 }
1192
1193 Rect *screen_physical_area_monitor(guint head)
1194 {
1195     if (head > screen_num_monitors)
1196         return NULL;
1197     return &monitor_area[head];
1198 }
1199
1200 void screen_set_root_cursor()
1201 {
1202     if (sn_app_starting())
1203         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1204                       ob_cursor(OB_CURSOR_BUSY));
1205     else
1206         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1207                       ob_cursor(OB_CURSOR_POINTER));
1208 }
1209
1210 gboolean screen_pointer_pos(gint *x, gint *y)
1211 {
1212     Window w;
1213     gint i;
1214     guint u;
1215
1216     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1217                            &w, &w, x, y, &i, &i, &u);
1218 }