more 64 bit fixes
[mikachu/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) 2004        Mikael Magnusson
5    Copyright (c) 2003        Ben 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                         SubstructureNotifyMask | 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 = 51;
208     i = 0;
209     supported = g_new(gulong, num_support);
210     supported[i++] = prop_atoms.net_current_desktop;
211     supported[i++] = prop_atoms.net_number_of_desktops;
212     supported[i++] = prop_atoms.net_desktop_geometry;
213     supported[i++] = prop_atoms.net_desktop_viewport;
214     supported[i++] = prop_atoms.net_active_window;
215     supported[i++] = prop_atoms.net_workarea;
216     supported[i++] = prop_atoms.net_client_list;
217     supported[i++] = prop_atoms.net_client_list_stacking;
218     supported[i++] = prop_atoms.net_desktop_names;
219     supported[i++] = prop_atoms.net_close_window;
220     supported[i++] = prop_atoms.net_desktop_layout;
221     supported[i++] = prop_atoms.net_showing_desktop;
222     supported[i++] = prop_atoms.net_wm_name;
223     supported[i++] = prop_atoms.net_wm_visible_name;
224     supported[i++] = prop_atoms.net_wm_icon_name;
225     supported[i++] = prop_atoms.net_wm_visible_icon_name;
226     supported[i++] = prop_atoms.net_wm_desktop;
227     supported[i++] = prop_atoms.net_wm_strut;
228     supported[i++] = prop_atoms.net_wm_window_type;
229     supported[i++] = prop_atoms.net_wm_window_type_desktop;
230     supported[i++] = prop_atoms.net_wm_window_type_dock;
231     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
232     supported[i++] = prop_atoms.net_wm_window_type_menu;
233     supported[i++] = prop_atoms.net_wm_window_type_utility;
234     supported[i++] = prop_atoms.net_wm_window_type_splash;
235     supported[i++] = prop_atoms.net_wm_window_type_dialog;
236     supported[i++] = prop_atoms.net_wm_window_type_normal;
237     supported[i++] = prop_atoms.net_wm_allowed_actions;
238     supported[i++] = prop_atoms.net_wm_action_move;
239     supported[i++] = prop_atoms.net_wm_action_resize;
240     supported[i++] = prop_atoms.net_wm_action_minimize;
241     supported[i++] = prop_atoms.net_wm_action_shade;
242     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
243     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
244     supported[i++] = prop_atoms.net_wm_action_fullscreen;
245     supported[i++] = prop_atoms.net_wm_action_change_desktop;
246     supported[i++] = prop_atoms.net_wm_action_close;
247     supported[i++] = prop_atoms.net_wm_state;
248     supported[i++] = prop_atoms.net_wm_state_modal;
249     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
250     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
251     supported[i++] = prop_atoms.net_wm_state_shaded;
252     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
253     supported[i++] = prop_atoms.net_wm_state_skip_pager;
254     supported[i++] = prop_atoms.net_wm_state_hidden;
255     supported[i++] = prop_atoms.net_wm_state_fullscreen;
256     supported[i++] = prop_atoms.net_wm_state_above;
257     supported[i++] = prop_atoms.net_wm_state_below;
258     supported[i++] = prop_atoms.net_moveresize_window;
259     supported[i++] = prop_atoms.net_wm_moveresize;
260     supported[i++] = prop_atoms.ob_wm_state_undecorated;
261     g_assert(i == num_support);
262 /*
263   supported[] = prop_atoms.net_wm_action_stick;
264 */
265
266     PROP_SETA32(RootWindow(ob_display, ob_screen),
267                 net_supported, atom, supported, num_support);
268     g_free(supported);
269
270     return TRUE;
271 }
272
273 void screen_startup(gboolean reconfig)
274 {
275     GSList *it;
276     guint i;
277
278     desktop_cycle_popup = pager_popup_new(FALSE);
279
280     if (!reconfig)
281         /* get the initial size */
282         screen_resize();
283
284     /* set the names */
285     screen_desktop_names = g_new(gchar*,
286                                  g_slist_length(config_desktops_names) + 1);
287     for (i = 0, it = config_desktops_names; it; ++i, it = g_slist_next(it))
288         screen_desktop_names[i] = it->data; /* dont strdup */
289     screen_desktop_names[i] = NULL;
290     PROP_SETSS(RootWindow(ob_display, ob_screen),
291                net_desktop_names, screen_desktop_names);
292     g_free(screen_desktop_names); /* dont free the individual strings */
293     screen_desktop_names = NULL;
294
295     if (!reconfig)
296         screen_num_desktops = 0;
297     screen_set_num_desktops(config_desktops_num);
298     if (!reconfig) {
299         screen_set_desktop(MIN(config_screen_firstdesk, screen_num_desktops) - 1);
300
301         /* don't start in showing-desktop mode */
302         screen_showing_desktop = FALSE;
303         PROP_SET32(RootWindow(ob_display, ob_screen),
304                    net_showing_desktop, cardinal, screen_showing_desktop);
305
306         screen_update_layout();
307     }
308 }
309
310 void screen_shutdown(gboolean reconfig)
311 {
312     Rect **r;
313
314     pager_popup_free(desktop_cycle_popup);
315
316     if (!reconfig) {
317         XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
318                      NoEventMask);
319
320         /* we're not running here no more! */
321         PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
322         /* not without us */
323         PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
324         /* don't keep this mode */
325         PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
326
327         XDestroyWindow(ob_display, screen_support_win);
328     }
329
330     g_strfreev(screen_desktop_names);
331     screen_desktop_names = NULL;
332     for (r = area; *r; ++r)
333         g_free(*r);
334     g_free(area);
335     area = NULL;
336 }
337
338 void screen_resize()
339 {
340     static gint oldw = 0, oldh = 0;
341     gint w, h;
342     GList *it;
343     gulong geometry[2];
344
345     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
346     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
347
348     if (w == oldw && h == oldh) return;
349
350     oldw = w; oldh = h;
351
352     /* Set the _NET_DESKTOP_GEOMETRY hint */
353     screen_physical_size.width = geometry[0] = w;
354     screen_physical_size.height = geometry[1] = h;
355     PROP_SETA32(RootWindow(ob_display, ob_screen),
356                 net_desktop_geometry, cardinal, geometry, 2);
357
358     if (ob_state() == OB_STATE_STARTING)
359         return;
360
361     screen_update_areas();
362     dock_configure();
363
364     for (it = client_list; it; it = g_list_next(it))
365         client_move_onscreen(it->data, FALSE);
366 }
367
368 void screen_set_num_desktops(guint num)
369 {
370     guint i, old;
371     gulong *viewport;
372     GList *it;
373
374     g_assert(num > 0);
375
376     if (screen_num_desktops == num) return;
377
378     old = screen_num_desktops;
379     screen_num_desktops = num;
380     PROP_SET32(RootWindow(ob_display, ob_screen),
381                net_number_of_desktops, cardinal, num);
382
383     /* set the viewport hint */
384     viewport = g_new0(gulong, num * 2);
385     PROP_SETA32(RootWindow(ob_display, ob_screen),
386                 net_desktop_viewport, cardinal, viewport, num * 2);
387     g_free(viewport);
388
389     /* the number of rows/columns will differ */
390     screen_update_layout();
391
392     /* may be some unnamed desktops that we need to fill in with names */
393     screen_update_desktop_names();
394
395     /* move windows on desktops that will no longer exist! */
396     for (it = client_list; it; it = g_list_next(it)) {
397         ObClient *c = it->data;
398         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
399             client_set_desktop(c, num - 1, FALSE);
400     }
401  
402     /* change our struts/area to match (after moving windows) */
403     screen_update_areas();
404
405     /* change our desktop if we're on one that no longer exists! */
406     if (screen_desktop >= screen_num_desktops)
407         screen_set_desktop(num - 1);
408
409    /* update the focus lists */
410     /* free our lists for the desktops which have disappeared */
411     for (i = num; i < old; ++i)
412         g_list_free(focus_order[i]);
413     /* realloc the array */
414     focus_order = g_renew(GList*, focus_order, num);
415     /* set the new lists to be empty */
416     for (i = old; i < num; ++i)
417         focus_order[i] = NULL;
418 }
419
420 void screen_set_desktop(guint num)
421 {
422     GList *it;
423     guint old;
424      
425     g_assert(num < screen_num_desktops);
426
427     old = screen_desktop;
428     screen_desktop = num;
429     PROP_SET32(RootWindow(ob_display, ob_screen),
430                net_current_desktop, cardinal, num);
431
432     if (old == num) return;
433
434     screen_last_desktop = old;
435
436     ob_debug("Moving to desktop %d\n", num+1);
437
438     if (moveresize_client)
439         client_set_desktop(moveresize_client, num, TRUE);
440
441     /* show windows before hiding the rest to lessen the enter/leave events */
442
443     /* show windows from top to bottom */
444     for (it = stacking_list; it; it = g_list_next(it)) {
445         if (WINDOW_IS_CLIENT(it->data)) {
446             ObClient *c = it->data;
447             if (client_should_show(c))
448                 frame_show(c->frame);
449         }
450     }
451
452     /* hide windows from bottom to top */
453     for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
454         if (WINDOW_IS_CLIENT(it->data)) {
455             ObClient *c = it->data;
456             if (c->frame->visible && !client_should_show(c))
457                 frame_hide(c->frame);
458         }
459     }
460
461     event_ignore_queued_enters();
462
463     focus_hilite = focus_fallback_target(OB_FOCUS_FALLBACK_NOFOCUS);
464     if (focus_hilite) {
465         frame_adjust_focus(focus_hilite->frame, TRUE);
466
467         /*!
468           When this focus_client check is not used, you can end up with races,
469           as demonstrated with gnome-panel, sometmies the window you click on
470           another desktop ends up losing focus cuz of the focus change here.
471         */
472         /*if (!focus_client)*/
473         client_focus(focus_hilite);
474     }
475 }
476
477 static void get_row_col(guint d, guint *r, guint *c)
478 {
479     switch (screen_desktop_layout.orientation) {
480     case OB_ORIENTATION_HORZ:
481         switch (screen_desktop_layout.start_corner) {
482         case OB_CORNER_TOPLEFT:
483             *r = d / screen_desktop_layout.columns;
484             *c = d % screen_desktop_layout.columns;
485             break;
486         case OB_CORNER_BOTTOMLEFT:
487             *r = screen_desktop_layout.rows - 1 -
488                 d / screen_desktop_layout.columns;
489             *c = d % screen_desktop_layout.columns;
490             break;
491         case OB_CORNER_TOPRIGHT:
492             *r = d / screen_desktop_layout.columns;
493             *c = screen_desktop_layout.columns - 1 -
494                 d % screen_desktop_layout.columns;
495             break;
496         case OB_CORNER_BOTTOMRIGHT:
497             *r = screen_desktop_layout.rows - 1 -
498                 d / screen_desktop_layout.columns;
499             *c = screen_desktop_layout.columns - 1 -
500                 d % screen_desktop_layout.columns;
501             break;
502         }
503         break;
504     case OB_ORIENTATION_VERT:
505         switch (screen_desktop_layout.start_corner) {
506         case OB_CORNER_TOPLEFT:
507             *r = d % screen_desktop_layout.rows;
508             *c = d / screen_desktop_layout.rows;
509             break;
510         case OB_CORNER_BOTTOMLEFT:
511             *r = screen_desktop_layout.rows - 1 -
512                 d % screen_desktop_layout.rows;
513             *c = d / screen_desktop_layout.rows;
514             break;
515         case OB_CORNER_TOPRIGHT:
516             *r = d % screen_desktop_layout.rows;
517             *c = screen_desktop_layout.columns - 1 -
518                 d / screen_desktop_layout.rows;
519             break;
520         case OB_CORNER_BOTTOMRIGHT:
521             *r = screen_desktop_layout.rows - 1 -
522                 d % screen_desktop_layout.rows;
523             *c = screen_desktop_layout.columns - 1 -
524                 d / screen_desktop_layout.rows;
525             break;
526         }
527         break;
528     }
529 }
530
531 static guint translate_row_col(guint r, guint c)
532 {
533     switch (screen_desktop_layout.orientation) {
534     case OB_ORIENTATION_HORZ:
535         switch (screen_desktop_layout.start_corner) {
536         case OB_CORNER_TOPLEFT:
537             return r % screen_desktop_layout.rows *
538                 screen_desktop_layout.columns +
539                 c % screen_desktop_layout.columns;
540         case OB_CORNER_BOTTOMLEFT:
541             return (screen_desktop_layout.rows - 1 -
542                     r % screen_desktop_layout.rows) *
543                 screen_desktop_layout.columns +
544                 c % screen_desktop_layout.columns;
545         case OB_CORNER_TOPRIGHT:
546             return r % screen_desktop_layout.rows *
547                 screen_desktop_layout.columns +
548                 (screen_desktop_layout.columns - 1 -
549                  c % screen_desktop_layout.columns);
550         case OB_CORNER_BOTTOMRIGHT:
551             return (screen_desktop_layout.rows - 1 -
552                     r % screen_desktop_layout.rows) *
553                 screen_desktop_layout.columns +
554                 (screen_desktop_layout.columns - 1 -
555                  c % screen_desktop_layout.columns);
556         }
557     case OB_ORIENTATION_VERT:
558         switch (screen_desktop_layout.start_corner) {
559         case OB_CORNER_TOPLEFT:
560             return c % screen_desktop_layout.columns *
561                 screen_desktop_layout.rows +
562                 r % screen_desktop_layout.rows;
563         case OB_CORNER_BOTTOMLEFT:
564             return c % screen_desktop_layout.columns *
565                 screen_desktop_layout.rows +
566                 (screen_desktop_layout.rows - 1 -
567                  r % screen_desktop_layout.rows);
568         case OB_CORNER_TOPRIGHT:
569             return (screen_desktop_layout.columns - 1 -
570                     c % screen_desktop_layout.columns) *
571                 screen_desktop_layout.rows +
572                 r % screen_desktop_layout.rows;
573         case OB_CORNER_BOTTOMRIGHT:
574             return (screen_desktop_layout.columns - 1 -
575                     c % screen_desktop_layout.columns) *
576                 screen_desktop_layout.rows +
577                 (screen_desktop_layout.rows - 1 -
578                  r % screen_desktop_layout.rows);
579         }
580     }
581     g_assert_not_reached();
582     return 0;
583 }
584
585 void screen_desktop_popup(guint d, gboolean show)
586 {
587     Rect *a;
588
589     if (!show) {
590         pager_popup_hide(desktop_cycle_popup);
591     } else {
592         a = screen_physical_area_monitor(0);
593         pager_popup_position(desktop_cycle_popup, CenterGravity,
594                              a->x + a->width / 2, a->y + a->height / 2);
595         /* XXX the size and the font extents need to be related on some level
596          */
597         pager_popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
598
599         pager_popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
600
601         pager_popup_show(desktop_cycle_popup, screen_desktop_names[d], d);
602     }
603 }
604
605 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
606                            gboolean dialog, gboolean done, gboolean cancel)
607 {
608     static gboolean first = TRUE;
609     static guint origd, d;
610     guint r, c;
611
612     if (cancel) {
613         d = origd;
614         goto done_cycle;
615     } else if (done && dialog) {
616         goto done_cycle;
617     }
618     if (first) {
619         first = FALSE;
620         d = origd = screen_desktop;
621     }
622
623     get_row_col(d, &r, &c);
624
625     if (linear) {
626         switch (dir) {
627         case OB_DIRECTION_EAST:
628             if (d < screen_num_desktops - 1)
629                 ++d;
630             else if (wrap)
631                 d = 0;
632             break;
633         case OB_DIRECTION_WEST:
634             if (d > 0)
635                 --d;
636             else if (wrap)
637                 d = screen_num_desktops - 1;
638             break;
639         default:
640             assert(0);
641             return screen_desktop;
642         }
643     } else {
644         switch (dir) {
645         case OB_DIRECTION_EAST:
646             ++c;
647             if (c >= screen_desktop_layout.columns) {
648                 if (wrap) {
649                     c = 0;
650                 } else {
651                     d = screen_desktop;
652                     goto show_cycle_dialog;
653                 }
654             }
655             d = translate_row_col(r, c);
656             if (d >= screen_num_desktops) {
657                 if (wrap) {
658                     ++c;
659                 } else {
660                     d = screen_desktop;
661                     goto show_cycle_dialog;
662                 }
663             }
664             break;
665         case OB_DIRECTION_WEST:
666             --c;
667             if (c >= screen_desktop_layout.columns) {
668                 if (wrap) {
669                     c = screen_desktop_layout.columns - 1;
670                 } else {
671                     d = screen_desktop;
672                     goto show_cycle_dialog;
673                 }
674             }
675             d = translate_row_col(r, c);
676             if (d >= screen_num_desktops) {
677                 if (wrap) {
678                     --c;
679                 } else {
680                     d = screen_desktop;
681                     goto show_cycle_dialog;
682                 }
683             }
684             break;
685         case OB_DIRECTION_SOUTH:
686             ++r;
687             if (r >= screen_desktop_layout.rows) {
688                 if (wrap) {
689                     r = 0;
690                 } else {
691                     d = screen_desktop;
692                     goto show_cycle_dialog;
693                 }
694             }
695             d = translate_row_col(r, c);
696             if (d >= screen_num_desktops) {
697                 if (wrap) {
698                     ++r;
699                 } else {
700                     d = screen_desktop;
701                     goto show_cycle_dialog;
702                 }
703             }
704             break;
705         case OB_DIRECTION_NORTH:
706             --r;
707             if (r >= screen_desktop_layout.rows) {
708                 if (wrap) {
709                     r = screen_desktop_layout.rows - 1;
710                 } else {
711                     d = screen_desktop;
712                     goto show_cycle_dialog;
713                 }
714             }
715             d = translate_row_col(r, c);
716             if (d >= screen_num_desktops) {
717                 if (wrap) {
718                     --r;
719                 } else {
720                     d = screen_desktop;
721                     goto show_cycle_dialog;
722                 }
723             }
724             break;
725         default:
726             assert(0);
727             return d = screen_desktop;
728         }
729
730         d = translate_row_col(r, c);
731     }
732
733 show_cycle_dialog:
734     if (dialog) {
735         screen_desktop_popup(d, TRUE);
736         return d;
737     }
738
739 done_cycle:
740     first = TRUE;
741
742     screen_desktop_popup(0, FALSE);
743
744     return d;
745 }
746
747 void screen_update_layout()
748 {
749     ObOrientation orient;
750     ObCorner corner;
751     guint rows;
752     guint cols;
753     guint32 *data;
754     guint num;
755     gboolean valid = FALSE;
756
757     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
758                     net_desktop_layout, cardinal, &data, &num)) {
759         if (num == 3 || num == 4) {
760
761             if (data[0] == prop_atoms.net_wm_orientation_vert)
762                 orient = OB_ORIENTATION_VERT;
763             else if (data[0] == prop_atoms.net_wm_orientation_horz)
764                 orient = OB_ORIENTATION_HORZ;
765             else
766                 goto screen_update_layout_bail;
767
768             if (num < 4)
769                 corner = OB_CORNER_TOPLEFT;
770             else {
771                 if (data[3] == prop_atoms.net_wm_topleft)
772                     corner = OB_CORNER_TOPLEFT;
773                 else if (data[3] == prop_atoms.net_wm_topright)
774                     corner = OB_CORNER_TOPRIGHT;
775                 else if (data[3] == prop_atoms.net_wm_bottomright)
776                     corner = OB_CORNER_BOTTOMRIGHT;
777                 else if (data[3] == prop_atoms.net_wm_bottomleft)
778                     corner = OB_CORNER_BOTTOMLEFT;
779                 else
780                     goto screen_update_layout_bail;
781             }
782
783             cols = data[1];
784             rows = data[2];
785
786             /* fill in a zero rows/columns */
787             if ((cols == 0 && rows == 0)) { /* both 0's is bad data.. */
788                 goto screen_update_layout_bail;
789             } else {
790                 if (cols == 0) {
791                     cols = screen_num_desktops / rows;
792                     if (rows * cols < screen_num_desktops)
793                         cols++;
794                     if (rows * cols >= screen_num_desktops + cols)
795                         rows--;
796                 } else if (rows == 0) {
797                     rows = screen_num_desktops / cols;
798                     if (cols * rows < screen_num_desktops)
799                         rows++;
800                     if (cols * rows >= screen_num_desktops + rows)
801                         cols--;
802                 }
803             }
804
805             /* bounds checking */
806             if (orient == OB_ORIENTATION_HORZ) {
807                 cols = MIN(screen_num_desktops, cols);
808                 rows = MIN(rows, (screen_num_desktops + cols - 1) / cols);
809                 cols = screen_num_desktops / rows +
810                     !!(screen_num_desktops % rows);
811             } else {
812                 rows = MIN(screen_num_desktops, rows);
813                 cols = MIN(cols, (screen_num_desktops + rows - 1) / rows);
814                 rows = screen_num_desktops / cols +
815                     !!(screen_num_desktops % cols);
816             }
817
818             valid = TRUE;
819         }
820     screen_update_layout_bail:
821         g_free(data);
822     }
823
824     if (!valid) {
825         /* defaults */
826         orient = OB_ORIENTATION_HORZ;
827         corner = OB_CORNER_TOPLEFT;
828         rows = 1;
829         cols = screen_num_desktops;
830     }
831
832     screen_desktop_layout.orientation = orient;
833     screen_desktop_layout.start_corner = corner;
834     screen_desktop_layout.rows = rows;
835     screen_desktop_layout.columns = cols;
836 }
837
838 void screen_update_desktop_names()
839 {
840     guint i;
841
842     /* empty the array */
843     g_strfreev(screen_desktop_names);
844     screen_desktop_names = NULL;
845
846     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
847                    net_desktop_names, utf8, &screen_desktop_names))
848         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
849     else
850         i = 0;
851     if (i <= screen_num_desktops) {
852         screen_desktop_names = g_renew(gchar*, screen_desktop_names,
853                                        screen_num_desktops + 1);
854         screen_desktop_names[screen_num_desktops] = NULL;
855         for (; i < screen_num_desktops; ++i)
856             screen_desktop_names[i] = g_strdup_printf("Desktop %i", i + 1);
857     }
858 }
859
860 void screen_show_desktop(gboolean show)
861 {
862     GList *it;
863      
864     if (show == screen_showing_desktop) return; /* no change */
865
866     screen_showing_desktop = show;
867
868     if (show) {
869         /* bottom to top */
870         for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
871             if (WINDOW_IS_CLIENT(it->data)) {
872                 ObClient *client = it->data;
873                 if (client->frame->visible && !client_should_show(client))
874                     frame_hide(client->frame);
875             }
876         }
877     } else {
878         /* top to bottom */
879         for (it = stacking_list; it; it = g_list_next(it)) {
880             if (WINDOW_IS_CLIENT(it->data)) {
881                 ObClient *client = it->data;
882                 if (!client->frame->visible && client_should_show(client))
883                     frame_show(client->frame);
884             }
885         }
886     }
887
888     if (show) {
889         /* focus desktop */
890         for (it = focus_order[screen_desktop]; it; it = g_list_next(it))
891             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
892                 client_focus(it->data))
893                 break;
894     } else {
895         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
896     }
897
898     show = !!show; /* make it boolean */
899     PROP_SET32(RootWindow(ob_display, ob_screen),
900                net_showing_desktop, cardinal, show);
901 }
902
903 void screen_install_colormap(ObClient *client, gboolean install)
904 {
905     XWindowAttributes wa;
906
907     if (client == NULL) {
908         if (install)
909             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
910         else
911             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
912     } else {
913         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
914             wa.colormap != None) {
915             xerror_set_ignore(TRUE);
916             if (install)
917                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
918             else
919                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
920             xerror_set_ignore(FALSE);
921         }
922     }
923 }
924
925 static inline void
926 screen_area_add_strut_left(const StrutPartial *s, const Rect *monitor_area,
927                            gint edge, Strut *ret)
928 {
929     if (s->left &&
930         ((s->left_end <= s->left_start) ||
931          (RECT_TOP(*monitor_area) < s->left_end &&
932           RECT_BOTTOM(*monitor_area) > s->left_start)))
933         ret->left = MAX(ret->left, edge);
934 }
935
936 static inline void
937 screen_area_add_strut_top(const StrutPartial *s, const Rect *monitor_area,
938                           gint edge, Strut *ret)
939 {
940     if (s->top &&
941         ((s->top_end <= s->top_start) ||
942          (RECT_LEFT(*monitor_area) < s->top_end &&
943           RECT_RIGHT(*monitor_area) > s->top_start)))
944         ret->top = MAX(ret->top, edge);
945 }
946
947 static inline void
948 screen_area_add_strut_right(const StrutPartial *s, const Rect *monitor_area,
949                             gint edge, Strut *ret)
950 {
951     if (s->right &&
952         ((s->right_end <= s->right_start) ||
953          (RECT_TOP(*monitor_area) < s->right_end &&
954           RECT_BOTTOM(*monitor_area) > s->right_start)))
955         ret->right = MAX(ret->right, edge);
956 }
957
958 static inline void
959 screen_area_add_strut_bottom(const StrutPartial *s, const Rect *monitor_area,
960                              gint edge, Strut *ret)
961 {
962     if (s->bottom &&
963         ((s->bottom_end <= s->bottom_start) ||
964          (RECT_LEFT(*monitor_area) < s->bottom_end &&
965           RECT_RIGHT(*monitor_area) > s->bottom_start)))
966         ret->bottom = MAX(ret->bottom, edge);
967 }
968
969 void screen_update_areas()
970 {
971     guint i, x;
972     gulong *dims;
973     GList *it;
974     gint o;
975
976     g_free(monitor_area);
977     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
978
979     if (area) {
980         for (i = 0; area[i]; ++i)
981             g_free(area[i]);
982         g_free(area);
983     }
984
985     area = g_new(Rect*, screen_num_desktops + 2);
986     for (i = 0; i < screen_num_desktops + 1; ++i)
987         area[i] = g_new0(Rect, screen_num_monitors + 1);
988     area[i] = NULL;
989      
990     dims = g_new(gulong, 4 * screen_num_desktops);
991
992     for (i = 0; i < screen_num_desktops + 1; ++i) {
993         Strut *struts;
994         gint l, r, t, b;
995
996         struts = g_new0(Strut, screen_num_monitors);
997
998         /* calc the xinerama areas */
999         for (x = 0; x < screen_num_monitors; ++x) {
1000             area[i][x] = monitor_area[x];
1001             if (x == 0) {
1002                 l = monitor_area[x].x;
1003                 t = monitor_area[x].y;
1004                 r = monitor_area[x].x + monitor_area[x].width - 1;
1005                 b = monitor_area[x].y + monitor_area[x].height - 1;
1006             } else {
1007                 l = MIN(l, monitor_area[x].x);
1008                 t = MIN(t, monitor_area[x].y);
1009                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
1010                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
1011             }
1012         }
1013         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
1014
1015         /* apply the struts */
1016
1017         /* find the left-most xin heads, i do this in 2 loops :| */
1018         o = area[i][0].x;
1019         for (x = 1; x < screen_num_monitors; ++x)
1020             o = MIN(o, area[i][x].x);
1021
1022         for (x = 0; x < screen_num_monitors; ++x) {
1023             for (it = client_list; it; it = g_list_next(it)) {
1024                 ObClient *c = it->data;
1025                 screen_area_add_strut_left(&c->strut,
1026                                            &monitor_area[x],
1027                                            o + c->strut.left - area[i][x].x,
1028                                            &struts[x]);
1029             }
1030             screen_area_add_strut_left(&dock_strut,
1031                                        &monitor_area[x],
1032                                        o + dock_strut.left - area[i][x].x,
1033                                        &struts[x]);
1034
1035             area[i][x].x += struts[x].left;
1036             area[i][x].width -= struts[x].left;
1037         }
1038
1039         /* find the top-most xin heads, i do this in 2 loops :| */
1040         o = area[i][0].y;
1041         for (x = 1; x < screen_num_monitors; ++x)
1042             o = MIN(o, area[i][x].y);
1043
1044         for (x = 0; x < screen_num_monitors; ++x) {
1045             for (it = client_list; it; it = g_list_next(it)) {
1046                 ObClient *c = it->data;
1047                 screen_area_add_strut_top(&c->strut,
1048                                            &monitor_area[x],
1049                                            o + c->strut.top - area[i][x].y,
1050                                            &struts[x]);
1051             }
1052             screen_area_add_strut_top(&dock_strut,
1053                                       &monitor_area[x],
1054                                       o + dock_strut.top - area[i][x].y,
1055                                       &struts[x]);
1056
1057             area[i][x].y += struts[x].top;
1058             area[i][x].height -= struts[x].top;
1059         }
1060
1061         /* find the right-most xin heads, i do this in 2 loops :| */
1062         o = area[i][0].x + area[i][0].width - 1;
1063         for (x = 1; x < screen_num_monitors; ++x)
1064             o = MAX(o, area[i][x].x + area[i][x].width - 1);
1065
1066         for (x = 0; x < screen_num_monitors; ++x) {
1067             for (it = client_list; it; it = g_list_next(it)) {
1068                 ObClient *c = it->data;
1069                 screen_area_add_strut_right(&c->strut,
1070                                            &monitor_area[x],
1071                                            (area[i][x].x +
1072                                             area[i][x].width - 1) -
1073                                             (o - c->strut.right),
1074                                             &struts[x]);
1075             }
1076             screen_area_add_strut_right(&dock_strut,
1077                                         &monitor_area[x],
1078                                         (area[i][x].x +
1079                                          area[i][x].width - 1) -
1080                                         (o - dock_strut.right),
1081                                         &struts[x]);
1082
1083             area[i][x].width -= struts[x].right;
1084         }
1085
1086         /* find the bottom-most xin heads, i do this in 2 loops :| */
1087         o = area[i][0].y + area[i][0].height - 1;
1088         for (x = 1; x < screen_num_monitors; ++x)
1089             o = MAX(o, area[i][x].y + area[i][x].height - 1);
1090
1091         for (x = 0; x < screen_num_monitors; ++x) {
1092             for (it = client_list; it; it = g_list_next(it)) {
1093                 ObClient *c = it->data;
1094                 screen_area_add_strut_bottom(&c->strut,
1095                                              &monitor_area[x],
1096                                              (area[i][x].y +
1097                                               area[i][x].height - 1) - \
1098                                              (o - c->strut.bottom),
1099                                              &struts[x]);
1100             }
1101             screen_area_add_strut_bottom(&dock_strut,
1102                                          &monitor_area[x],
1103                                          (area[i][x].y +
1104                                           area[i][x].height - 1) - \
1105                                          (o - dock_strut.bottom),
1106                                          &struts[x]);
1107
1108             area[i][x].height -= struts[x].bottom;
1109         }
1110
1111         l = RECT_LEFT(area[i][0]);
1112         t = RECT_TOP(area[i][0]);
1113         r = RECT_RIGHT(area[i][0]);
1114         b = RECT_BOTTOM(area[i][0]);
1115         for (x = 1; x < screen_num_monitors; ++x) {
1116             l = MIN(l, RECT_LEFT(area[i][x]));
1117             t = MIN(l, RECT_TOP(area[i][x]));
1118             r = MAX(r, RECT_RIGHT(area[i][x]));
1119             b = MAX(b, RECT_BOTTOM(area[i][x]));
1120         }
1121         RECT_SET(area[i][screen_num_monitors], l, t,
1122                  r - l + 1, b - t + 1);
1123
1124         /* XXX optimize when this is run? */
1125
1126         /* the area has changed, adjust all the maximized 
1127            windows */
1128         for (it = client_list; it; it = g_list_next(it)) {
1129             ObClient *c = it->data; 
1130             if (i < screen_num_desktops) {
1131                 if (c->desktop == i)
1132                     client_reconfigure(c);
1133             } else if (c->desktop == DESKTOP_ALL)
1134                 client_reconfigure(c);
1135         }
1136         if (i < screen_num_desktops) {
1137             /* don't set these for the 'all desktops' area */
1138             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1139             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1140             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1141             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1142         }
1143
1144         g_free(struts);
1145     }
1146
1147     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1148                 dims, 4 * screen_num_desktops);
1149
1150     g_free(dims);
1151 }
1152
1153 Rect *screen_area(guint desktop)
1154 {
1155     return screen_area_monitor(desktop, screen_num_monitors);
1156 }
1157
1158 Rect *screen_area_monitor(guint desktop, guint head)
1159 {
1160     if (head > screen_num_monitors)
1161         return NULL;
1162     if (desktop >= screen_num_desktops) {
1163         if (desktop == DESKTOP_ALL)
1164             return &area[screen_num_desktops][head];
1165         return NULL;
1166     }
1167     return &area[desktop][head];
1168 }
1169
1170 Rect *screen_physical_area()
1171 {
1172     return screen_physical_area_monitor(screen_num_monitors);
1173 }
1174
1175 Rect *screen_physical_area_monitor(guint head)
1176 {
1177     if (head > screen_num_monitors)
1178         return NULL;
1179     return &monitor_area[head];
1180 }
1181
1182 void screen_set_root_cursor()
1183 {
1184     if (sn_app_starting())
1185         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1186                       ob_cursor(OB_CURSOR_BUSY));
1187     else
1188         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1189                       ob_cursor(OB_CURSOR_POINTER));
1190 }
1191
1192 gboolean screen_pointer_pos(gint *x, gint *y)
1193 {
1194     Window w;
1195     gint i;
1196     guint u;
1197
1198     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1199                            &w, &w, x, y, &i, &i, &u);
1200 }