lower the screen support win at startup. this way we don't map everything over top...
[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 "session.h"
32 #include "frame.h"
33 #include "event.h"
34 #include "focus.h"
35 #include "popup.h"
36 #include "extensions.h"
37 #include "render/render.h"
38 #include "gettext.h"
39
40 #include <X11/Xlib.h>
41 #ifdef HAVE_UNISTD_H
42 #  include <sys/types.h>
43 #  include <unistd.h>
44 #endif
45 #include <assert.h>
46
47 /*! The event mask to grab on the root window */
48 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
49                         EnterWindowMask | LeaveWindowMask | \
50                         SubstructureRedirectMask | FocusChangeMask | \
51                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
52
53 guint    screen_num_desktops;
54 guint    screen_num_monitors;
55 guint    screen_desktop;
56 guint    screen_last_desktop;
57 Size     screen_physical_size;
58 gboolean screen_showing_desktop;
59 DesktopLayout screen_desktop_layout;
60 gchar  **screen_desktop_names;
61 Window   screen_support_win;
62 Time     screen_desktop_user_time = CurrentTime;
63
64 static Rect  **area; /* array of desktop holding array of xinerama areas */
65 static Rect  *monitor_area;
66
67 static ObPagerPopup *desktop_cycle_popup;
68
69 static gboolean replace_wm()
70 {
71     gchar *wm_sn;
72     Atom wm_sn_atom;
73     Window current_wm_sn_owner;
74     Time timestamp;
75
76     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
77     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
78     g_free(wm_sn);
79
80     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
81     if (current_wm_sn_owner == screen_support_win)
82         current_wm_sn_owner = None;
83     if (current_wm_sn_owner) {
84         if (!ob_replace_wm) {
85             g_message(_("A window manager is already running on screen %d"),
86                       ob_screen);
87             return FALSE;
88         }
89         xerror_set_ignore(TRUE);
90         xerror_occured = FALSE;
91
92         /* We want to find out when the current selection owner dies */
93         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
94         XSync(ob_display, FALSE);
95
96         xerror_set_ignore(FALSE);
97         if (xerror_occured)
98             current_wm_sn_owner = None;
99     }
100
101     {
102         /* Generate a timestamp */
103         XEvent event;
104
105         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
106
107         XChangeProperty(ob_display, screen_support_win,
108                         prop_atoms.wm_class, prop_atoms.string,
109                         8, PropModeAppend, NULL, 0);
110         XWindowEvent(ob_display, screen_support_win,
111                      PropertyChangeMask, &event);
112
113         XSelectInput(ob_display, screen_support_win, NoEventMask);
114
115         timestamp = event.xproperty.time;
116     }
117
118     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
119                        timestamp);
120
121     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
122         g_message(_("Could not acquire window manager selection on screen %d"),
123                   ob_screen);
124         return FALSE;
125     }
126
127     /* Wait for old window manager to go away */
128     if (current_wm_sn_owner) {
129       XEvent event;
130       gulong wait = 0;
131       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
132
133       while (wait < timeout) {
134           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
135                                 StructureNotifyMask, &event) &&
136               event.type == DestroyNotify)
137               break;
138           g_usleep(G_USEC_PER_SEC / 10);
139           wait += G_USEC_PER_SEC / 10;
140       }
141
142       if (wait >= timeout) {
143           g_message(_("The WM on screen %d is not exiting"), ob_screen);
144           return FALSE;
145       }
146     }
147
148     /* Send client message indicating that we are now the WM */
149     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
150                  timestamp, wm_sn_atom, screen_support_win, 0,
151                  SubstructureNotifyMask);
152
153     return TRUE;
154 }
155
156 gboolean screen_annex()
157 {
158     XSetWindowAttributes attrib;
159     pid_t pid;
160     gint i, num_support;
161     Atom *prop_atoms_start, *wm_supported_pos;
162     gulong *supported;
163
164     /* create the netwm support window */
165     attrib.override_redirect = TRUE;
166     screen_support_win = XCreateWindow(ob_display,
167                                        RootWindow(ob_display, ob_screen),
168                                        -100, -100, 1, 1, 0,
169                                        CopyFromParent, InputOutput,
170                                        CopyFromParent,
171                                        CWOverrideRedirect, &attrib);
172     XMapWindow(ob_display, screen_support_win);
173     XLowerWindow(ob_display, screen_support_win);
174
175     if (!replace_wm()) {
176         XDestroyWindow(ob_display, screen_support_win);
177         return FALSE;
178     }
179
180     xerror_set_ignore(TRUE);
181     xerror_occured = FALSE;
182     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
183                  ROOT_EVENTMASK);
184     xerror_set_ignore(FALSE);
185     if (xerror_occured) {
186         g_message(_("A window manager is already running on screen %d"),
187                   ob_screen);
188
189         XDestroyWindow(ob_display, screen_support_win);
190         return FALSE;
191     }
192
193
194     screen_set_root_cursor();
195
196     /* set the OPENBOX_PID hint */
197     pid = getpid();
198     PROP_SET32(RootWindow(ob_display, ob_screen),
199                openbox_pid, cardinal, pid);
200
201     /* set supporting window */
202     PROP_SET32(RootWindow(ob_display, ob_screen),
203                net_supporting_wm_check, window, screen_support_win);
204
205     /* set properties on the supporting window */
206     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
207     PROP_SET32(screen_support_win, net_supporting_wm_check,
208                window, screen_support_win);
209
210     /* set the _NET_SUPPORTED_ATOMS hint */
211
212     /* this is all the atoms after net_supported in the prop_atoms struct */
213     prop_atoms_start = (Atom*)&prop_atoms;
214     wm_supported_pos = (Atom*)&(prop_atoms.net_supported);
215     num_support = sizeof(prop_atoms) / sizeof(Atom) -
216         (wm_supported_pos - prop_atoms_start) - 1;
217     i = 0;
218     supported = g_new(gulong, num_support);
219     supported[i++] = prop_atoms.net_supporting_wm_check;
220     supported[i++] = prop_atoms.net_wm_full_placement;
221     supported[i++] = prop_atoms.net_current_desktop;
222     supported[i++] = prop_atoms.net_number_of_desktops;
223     supported[i++] = prop_atoms.net_desktop_geometry;
224     supported[i++] = prop_atoms.net_desktop_viewport;
225     supported[i++] = prop_atoms.net_active_window;
226     supported[i++] = prop_atoms.net_workarea;
227     supported[i++] = prop_atoms.net_client_list;
228     supported[i++] = prop_atoms.net_client_list_stacking;
229     supported[i++] = prop_atoms.net_desktop_names;
230     supported[i++] = prop_atoms.net_close_window;
231     supported[i++] = prop_atoms.net_desktop_layout;
232     supported[i++] = prop_atoms.net_showing_desktop;
233     supported[i++] = prop_atoms.net_wm_name;
234     supported[i++] = prop_atoms.net_wm_visible_name;
235     supported[i++] = prop_atoms.net_wm_icon_name;
236     supported[i++] = prop_atoms.net_wm_visible_icon_name;
237     supported[i++] = prop_atoms.net_wm_desktop;
238     supported[i++] = prop_atoms.net_wm_strut;
239     supported[i++] = prop_atoms.net_wm_strut_partial;
240     supported[i++] = prop_atoms.net_wm_icon;
241     supported[i++] = prop_atoms.net_wm_icon_geometry;
242     supported[i++] = prop_atoms.net_wm_window_type;
243     supported[i++] = prop_atoms.net_wm_window_type_desktop;
244     supported[i++] = prop_atoms.net_wm_window_type_dock;
245     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
246     supported[i++] = prop_atoms.net_wm_window_type_menu;
247     supported[i++] = prop_atoms.net_wm_window_type_utility;
248     supported[i++] = prop_atoms.net_wm_window_type_splash;
249     supported[i++] = prop_atoms.net_wm_window_type_dialog;
250     supported[i++] = prop_atoms.net_wm_window_type_normal;
251     supported[i++] = prop_atoms.net_wm_allowed_actions;
252     supported[i++] = prop_atoms.net_wm_action_move;
253     supported[i++] = prop_atoms.net_wm_action_resize;
254     supported[i++] = prop_atoms.net_wm_action_minimize;
255     supported[i++] = prop_atoms.net_wm_action_shade;
256     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
257     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
258     supported[i++] = prop_atoms.net_wm_action_fullscreen;
259     supported[i++] = prop_atoms.net_wm_action_change_desktop;
260     supported[i++] = prop_atoms.net_wm_action_close;
261     supported[i++] = prop_atoms.net_wm_state;
262     supported[i++] = prop_atoms.net_wm_state_modal;
263     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
264     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
265     supported[i++] = prop_atoms.net_wm_state_shaded;
266     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
267     supported[i++] = prop_atoms.net_wm_state_skip_pager;
268     supported[i++] = prop_atoms.net_wm_state_hidden;
269     supported[i++] = prop_atoms.net_wm_state_fullscreen;
270     supported[i++] = prop_atoms.net_wm_state_above;
271     supported[i++] = prop_atoms.net_wm_state_below;
272     supported[i++] = prop_atoms.net_wm_state_demands_attention;
273     supported[i++] = prop_atoms.net_moveresize_window;
274     supported[i++] = prop_atoms.net_wm_moveresize;
275     supported[i++] = prop_atoms.net_wm_user_time;
276     supported[i++] = prop_atoms.net_frame_extents;
277     supported[i++] = prop_atoms.net_startup_id;
278 #ifdef SYNC
279     supported[i++] = prop_atoms.net_wm_sync_request;
280     supported[i++] = prop_atoms.net_wm_sync_request_counter;
281 #endif
282
283     supported[i++] = prop_atoms.kde_wm_change_state;
284     supported[i++] = prop_atoms.kde_net_wm_frame_strut;
285     supported[i++] = prop_atoms.kde_net_wm_window_type_override;
286
287     supported[i++] = prop_atoms.openbox_wm_state_undecorated;
288     supported[i++] = prop_atoms.openbox_pid;
289     supported[i++] = prop_atoms.openbox_config;
290     supported[i++] = prop_atoms.openbox_control;
291     g_assert(i == num_support);
292
293     PROP_SETA32(RootWindow(ob_display, ob_screen),
294                 net_supported, atom, supported, num_support);
295     g_free(supported);
296
297     return TRUE;
298 }
299
300 void screen_startup(gboolean reconfig)
301 {
302     GSList *it;
303     guint i;
304
305     desktop_cycle_popup = pager_popup_new(FALSE);
306     pager_popup_height(desktop_cycle_popup, POPUP_HEIGHT);
307
308     if (!reconfig)
309         /* get the initial size */
310         screen_resize();
311
312     /* get the names */
313     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
314                    net_desktop_names, utf8, &screen_desktop_names))
315         for (i = 0; screen_desktop_names[i]; ++i);
316     else
317         i = 0;
318     for (it = g_slist_nth(config_desktops_names, i); it;
319          it = g_slist_next(it), ++i)
320     {
321         screen_desktop_names = g_renew(gchar*, screen_desktop_names, i + 2);
322         screen_desktop_names[i+1] = NULL;
323         screen_desktop_names[i] = g_strdup(it->data);
324     }
325     /* then set the names */
326     PROP_SETSS(RootWindow(ob_display, ob_screen),
327                net_desktop_names, screen_desktop_names);
328     g_strfreev(screen_desktop_names);
329     screen_desktop_names = NULL;
330
331     if (!reconfig)
332         screen_num_desktops = 0;
333     screen_set_num_desktops(config_desktops_num);
334     if (!reconfig) {
335         guint32 d;
336         /* start on the current desktop when a wm was already running */
337         if (PROP_GET32(RootWindow(ob_display, ob_screen),
338                        net_current_desktop, cardinal, &d) &&
339             d < screen_num_desktops)
340         {
341             screen_set_desktop(d, FALSE);
342         } else if (session_desktop >= 0)
343             screen_set_desktop(MIN((guint)session_desktop,
344                                    screen_num_desktops), FALSE);
345         else
346             screen_set_desktop(MIN(config_screen_firstdesk,
347                                    screen_num_desktops) - 1, FALSE);
348
349         /* don't start in showing-desktop mode */
350         screen_showing_desktop = FALSE;
351         PROP_SET32(RootWindow(ob_display, ob_screen),
352                    net_showing_desktop, cardinal, screen_showing_desktop);
353
354         screen_update_layout();
355     }
356 }
357
358 void screen_shutdown(gboolean reconfig)
359 {
360     Rect **r;
361
362     pager_popup_free(desktop_cycle_popup);
363
364     if (!reconfig) {
365         XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
366                      NoEventMask);
367
368         /* we're not running here no more! */
369         PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
370         /* not without us */
371         PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
372         /* don't keep this mode */
373         PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
374
375         XDestroyWindow(ob_display, screen_support_win);
376     }
377
378     g_strfreev(screen_desktop_names);
379     screen_desktop_names = NULL;
380     for (r = area; *r; ++r)
381         g_free(*r);
382     g_free(area);
383     area = NULL;
384 }
385
386 void screen_resize()
387 {
388     static gint oldw = 0, oldh = 0;
389     gint w, h;
390     GList *it;
391     gulong geometry[2];
392
393     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
394     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
395
396     if (w == oldw && h == oldh) return;
397
398     oldw = w; oldh = h;
399
400     /* Set the _NET_DESKTOP_GEOMETRY hint */
401     screen_physical_size.width = geometry[0] = w;
402     screen_physical_size.height = geometry[1] = h;
403     PROP_SETA32(RootWindow(ob_display, ob_screen),
404                 net_desktop_geometry, cardinal, geometry, 2);
405
406     if (ob_state() == OB_STATE_STARTING)
407         return;
408
409     screen_update_areas();
410     dock_configure();
411
412     for (it = client_list; it; it = g_list_next(it))
413         client_move_onscreen(it->data, FALSE);
414 }
415
416 void screen_set_num_desktops(guint num)
417 {
418     guint old;
419     gulong *viewport;
420     GList *it;
421
422     g_assert(num > 0);
423
424     if (screen_num_desktops == num) return;
425
426     old = screen_num_desktops;
427     screen_num_desktops = num;
428     PROP_SET32(RootWindow(ob_display, ob_screen),
429                net_number_of_desktops, cardinal, num);
430
431     /* set the viewport hint */
432     viewport = g_new0(gulong, num * 2);
433     PROP_SETA32(RootWindow(ob_display, ob_screen),
434                 net_desktop_viewport, cardinal, viewport, num * 2);
435     g_free(viewport);
436
437     /* the number of rows/columns will differ */
438     screen_update_layout();
439
440     /* move windows on desktops that will no longer exist! */
441     for (it = client_list; it; it = g_list_next(it)) {
442         ObClient *c = it->data;
443         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
444             client_set_desktop(c, num - 1, FALSE);
445     }
446  
447     /* change our struts/area to match (after moving windows) */
448     screen_update_areas();
449
450     /* may be some unnamed desktops that we need to fill in with names
451      (after updating the areas so the popup can resize) */
452     screen_update_desktop_names();
453
454     /* change our desktop if we're on one that no longer exists! */
455     if (screen_desktop >= screen_num_desktops)
456         screen_set_desktop(num - 1, TRUE);
457 }
458
459 void screen_set_desktop(guint num, gboolean dofocus)
460 {
461     ObClient *c;
462     GList *it;
463     guint old;
464      
465     g_assert(num < screen_num_desktops);
466
467     old = screen_desktop;
468     screen_desktop = num;
469     PROP_SET32(RootWindow(ob_display, ob_screen),
470                net_current_desktop, cardinal, num);
471
472     if (old == num) return;
473
474     screen_last_desktop = old;
475
476     ob_debug("Moving to desktop %d\n", num+1);
477
478     if (moveresize_client)
479         client_set_desktop(moveresize_client, num, TRUE);
480
481     /* show windows before hiding the rest to lessen the enter/leave events */
482
483     /* show/hide windows from top to bottom */
484     for (it = stacking_list; it; it = g_list_next(it)) {
485         if (WINDOW_IS_CLIENT(it->data)) {
486             ObClient *c = it->data;
487             client_show(c);
488         }
489     }
490
491     /* hide windows from bottom to top */
492     for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
493         if (WINDOW_IS_CLIENT(it->data)) {
494             ObClient *c = it->data;
495             client_hide(c);
496         }
497     }
498
499     /* have to try focus here because when you leave an empty desktop
500        there is no focus out to watch for */
501     if (dofocus && (c = focus_fallback_target(TRUE, focus_client))) {
502         /* reduce flicker by hiliting now rather than waiting for the server
503            FocusIn event */
504         frame_adjust_focus(c->frame, TRUE);
505         client_focus(c);
506     }
507
508     event_ignore_queued_enters();
509
510     if (event_curtime != CurrentTime)
511         screen_desktop_user_time = event_curtime;
512 }
513
514 static void get_row_col(guint d, 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             *r = d / screen_desktop_layout.columns;
521             *c = d % screen_desktop_layout.columns;
522             break;
523         case OB_CORNER_BOTTOMLEFT:
524             *r = screen_desktop_layout.rows - 1 -
525                 d / screen_desktop_layout.columns;
526             *c = d % screen_desktop_layout.columns;
527             break;
528         case OB_CORNER_TOPRIGHT:
529             *r = d / screen_desktop_layout.columns;
530             *c = screen_desktop_layout.columns - 1 -
531                 d % screen_desktop_layout.columns;
532             break;
533         case OB_CORNER_BOTTOMRIGHT:
534             *r = screen_desktop_layout.rows - 1 -
535                 d / screen_desktop_layout.columns;
536             *c = screen_desktop_layout.columns - 1 -
537                 d % screen_desktop_layout.columns;
538             break;
539         }
540         break;
541     case OB_ORIENTATION_VERT:
542         switch (screen_desktop_layout.start_corner) {
543         case OB_CORNER_TOPLEFT:
544             *r = d % screen_desktop_layout.rows;
545             *c = d / screen_desktop_layout.rows;
546             break;
547         case OB_CORNER_BOTTOMLEFT:
548             *r = screen_desktop_layout.rows - 1 -
549                 d % screen_desktop_layout.rows;
550             *c = d / screen_desktop_layout.rows;
551             break;
552         case OB_CORNER_TOPRIGHT:
553             *r = d % screen_desktop_layout.rows;
554             *c = screen_desktop_layout.columns - 1 -
555                 d / screen_desktop_layout.rows;
556             break;
557         case OB_CORNER_BOTTOMRIGHT:
558             *r = screen_desktop_layout.rows - 1 -
559                 d % screen_desktop_layout.rows;
560             *c = screen_desktop_layout.columns - 1 -
561                 d / screen_desktop_layout.rows;
562             break;
563         }
564         break;
565     }
566 }
567
568 static guint translate_row_col(guint r, guint c)
569 {
570     switch (screen_desktop_layout.orientation) {
571     case OB_ORIENTATION_HORZ:
572         switch (screen_desktop_layout.start_corner) {
573         case OB_CORNER_TOPLEFT:
574             return r % screen_desktop_layout.rows *
575                 screen_desktop_layout.columns +
576                 c % screen_desktop_layout.columns;
577         case OB_CORNER_BOTTOMLEFT:
578             return (screen_desktop_layout.rows - 1 -
579                     r % screen_desktop_layout.rows) *
580                 screen_desktop_layout.columns +
581                 c % screen_desktop_layout.columns;
582         case OB_CORNER_TOPRIGHT:
583             return r % screen_desktop_layout.rows *
584                 screen_desktop_layout.columns +
585                 (screen_desktop_layout.columns - 1 -
586                  c % screen_desktop_layout.columns);
587         case OB_CORNER_BOTTOMRIGHT:
588             return (screen_desktop_layout.rows - 1 -
589                     r % screen_desktop_layout.rows) *
590                 screen_desktop_layout.columns +
591                 (screen_desktop_layout.columns - 1 -
592                  c % screen_desktop_layout.columns);
593         }
594     case OB_ORIENTATION_VERT:
595         switch (screen_desktop_layout.start_corner) {
596         case OB_CORNER_TOPLEFT:
597             return c % screen_desktop_layout.columns *
598                 screen_desktop_layout.rows +
599                 r % screen_desktop_layout.rows;
600         case OB_CORNER_BOTTOMLEFT:
601             return c % screen_desktop_layout.columns *
602                 screen_desktop_layout.rows +
603                 (screen_desktop_layout.rows - 1 -
604                  r % screen_desktop_layout.rows);
605         case OB_CORNER_TOPRIGHT:
606             return (screen_desktop_layout.columns - 1 -
607                     c % screen_desktop_layout.columns) *
608                 screen_desktop_layout.rows +
609                 r % screen_desktop_layout.rows;
610         case OB_CORNER_BOTTOMRIGHT:
611             return (screen_desktop_layout.columns - 1 -
612                     c % screen_desktop_layout.columns) *
613                 screen_desktop_layout.rows +
614                 (screen_desktop_layout.rows - 1 -
615                  r % screen_desktop_layout.rows);
616         }
617     }
618     g_assert_not_reached();
619     return 0;
620 }
621
622 void screen_desktop_popup(guint d, gboolean show)
623 {
624     Rect *a;
625
626     if (!show) {
627         pager_popup_hide(desktop_cycle_popup);
628     } else {
629         a = screen_physical_area_monitor(0);
630         pager_popup_position(desktop_cycle_popup, CenterGravity,
631                              a->x + a->width / 2, a->y + a->height / 2);
632         pager_popup_show(desktop_cycle_popup, screen_desktop_names[d], d);
633     }
634 }
635
636 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
637                            gboolean dialog, gboolean done, gboolean cancel)
638 {
639     static gboolean first = TRUE;
640     static guint origd, d;
641     guint r, c;
642
643     if (cancel) {
644         d = origd;
645         goto done_cycle;
646     } else if (done && dialog) {
647         goto done_cycle;
648     }
649     if (first) {
650         first = FALSE;
651         d = origd = screen_desktop;
652     }
653
654     get_row_col(d, &r, &c);
655
656     if (linear) {
657         switch (dir) {
658         case OB_DIRECTION_EAST:
659             if (d < screen_num_desktops - 1)
660                 ++d;
661             else if (wrap)
662                 d = 0;
663             break;
664         case OB_DIRECTION_WEST:
665             if (d > 0)
666                 --d;
667             else if (wrap)
668                 d = screen_num_desktops - 1;
669             break;
670         default:
671             assert(0);
672             return screen_desktop;
673         }
674     } else {
675         switch (dir) {
676         case OB_DIRECTION_EAST:
677             ++c;
678             if (c >= screen_desktop_layout.columns) {
679                 if (wrap) {
680                     c = 0;
681                 } else {
682                     d = screen_desktop;
683                     goto show_cycle_dialog;
684                 }
685             }
686             d = translate_row_col(r, c);
687             if (d >= screen_num_desktops) {
688                 if (wrap) {
689                     ++c;
690                 } else {
691                     d = screen_desktop;
692                     goto show_cycle_dialog;
693                 }
694             }
695             break;
696         case OB_DIRECTION_WEST:
697             --c;
698             if (c >= screen_desktop_layout.columns) {
699                 if (wrap) {
700                     c = screen_desktop_layout.columns - 1;
701                 } else {
702                     d = screen_desktop;
703                     goto show_cycle_dialog;
704                 }
705             }
706             d = translate_row_col(r, c);
707             if (d >= screen_num_desktops) {
708                 if (wrap) {
709                     --c;
710                 } else {
711                     d = screen_desktop;
712                     goto show_cycle_dialog;
713                 }
714             }
715             break;
716         case OB_DIRECTION_SOUTH:
717             ++r;
718             if (r >= screen_desktop_layout.rows) {
719                 if (wrap) {
720                     r = 0;
721                 } else {
722                     d = screen_desktop;
723                     goto show_cycle_dialog;
724                 }
725             }
726             d = translate_row_col(r, c);
727             if (d >= screen_num_desktops) {
728                 if (wrap) {
729                     ++r;
730                 } else {
731                     d = screen_desktop;
732                     goto show_cycle_dialog;
733                 }
734             }
735             break;
736         case OB_DIRECTION_NORTH:
737             --r;
738             if (r >= screen_desktop_layout.rows) {
739                 if (wrap) {
740                     r = screen_desktop_layout.rows - 1;
741                 } else {
742                     d = screen_desktop;
743                     goto show_cycle_dialog;
744                 }
745             }
746             d = translate_row_col(r, c);
747             if (d >= screen_num_desktops) {
748                 if (wrap) {
749                     --r;
750                 } else {
751                     d = screen_desktop;
752                     goto show_cycle_dialog;
753                 }
754             }
755             break;
756         default:
757             assert(0);
758             return d = screen_desktop;
759         }
760
761         d = translate_row_col(r, c);
762     }
763
764 show_cycle_dialog:
765     if (dialog) {
766         screen_desktop_popup(d, TRUE);
767         return d;
768     }
769
770 done_cycle:
771     first = TRUE;
772
773     screen_desktop_popup(0, FALSE);
774
775     return d;
776 }
777
778 void screen_update_layout()
779 {
780     ObOrientation orient;
781     ObCorner corner;
782     guint rows;
783     guint cols;
784     guint32 *data;
785     guint num;
786     gboolean valid = FALSE;
787
788     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
789                     net_desktop_layout, cardinal, &data, &num)) {
790         if (num == 3 || num == 4) {
791
792             if (data[0] == prop_atoms.net_wm_orientation_vert)
793                 orient = OB_ORIENTATION_VERT;
794             else if (data[0] == prop_atoms.net_wm_orientation_horz)
795                 orient = OB_ORIENTATION_HORZ;
796             else
797                 goto screen_update_layout_bail;
798
799             if (num < 4)
800                 corner = OB_CORNER_TOPLEFT;
801             else {
802                 if (data[3] == prop_atoms.net_wm_topleft)
803                     corner = OB_CORNER_TOPLEFT;
804                 else if (data[3] == prop_atoms.net_wm_topright)
805                     corner = OB_CORNER_TOPRIGHT;
806                 else if (data[3] == prop_atoms.net_wm_bottomright)
807                     corner = OB_CORNER_BOTTOMRIGHT;
808                 else if (data[3] == prop_atoms.net_wm_bottomleft)
809                     corner = OB_CORNER_BOTTOMLEFT;
810                 else
811                     goto screen_update_layout_bail;
812             }
813
814             cols = data[1];
815             rows = data[2];
816
817             /* fill in a zero rows/columns */
818             if ((cols == 0 && rows == 0)) { /* both 0's is bad data.. */
819                 goto screen_update_layout_bail;
820             } else {
821                 if (cols == 0) {
822                     cols = screen_num_desktops / rows;
823                     if (rows * cols < screen_num_desktops)
824                         cols++;
825                     if (rows * cols >= screen_num_desktops + cols)
826                         rows--;
827                 } else if (rows == 0) {
828                     rows = screen_num_desktops / cols;
829                     if (cols * rows < screen_num_desktops)
830                         rows++;
831                     if (cols * rows >= screen_num_desktops + rows)
832                         cols--;
833                 }
834             }
835
836             /* bounds checking */
837             if (orient == OB_ORIENTATION_HORZ) {
838                 cols = MIN(screen_num_desktops, cols);
839                 rows = MIN(rows, (screen_num_desktops + cols - 1) / cols);
840                 cols = screen_num_desktops / rows +
841                     !!(screen_num_desktops % rows);
842             } else {
843                 rows = MIN(screen_num_desktops, rows);
844                 cols = MIN(cols, (screen_num_desktops + rows - 1) / rows);
845                 rows = screen_num_desktops / cols +
846                     !!(screen_num_desktops % cols);
847             }
848
849             valid = TRUE;
850         }
851     screen_update_layout_bail:
852         g_free(data);
853     }
854
855     if (!valid) {
856         /* defaults */
857         orient = OB_ORIENTATION_HORZ;
858         corner = OB_CORNER_TOPLEFT;
859         rows = 1;
860         cols = screen_num_desktops;
861     }
862
863     screen_desktop_layout.orientation = orient;
864     screen_desktop_layout.start_corner = corner;
865     screen_desktop_layout.rows = rows;
866     screen_desktop_layout.columns = cols;
867 }
868
869 void screen_update_desktop_names()
870 {
871     guint i;
872
873     /* empty the array */
874     g_strfreev(screen_desktop_names);
875     screen_desktop_names = NULL;
876
877     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
878                    net_desktop_names, utf8, &screen_desktop_names))
879         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
880     else
881         i = 0;
882     if (i <= screen_num_desktops) {
883         screen_desktop_names = g_renew(gchar*, screen_desktop_names,
884                                        screen_num_desktops + 1);
885         screen_desktop_names[screen_num_desktops] = NULL;
886         for (; i < screen_num_desktops; ++i)
887             screen_desktop_names[i] = g_strdup_printf("desktop %i", i + 1);
888     }
889
890     /* resize the pager for these names */
891     pager_popup_width_to_strings(desktop_cycle_popup,
892                                  screen_desktop_names,
893                                  screen_num_desktops,
894                                  MAX(screen_physical_area_monitor(0)->width/3,
895                                      POPUP_WIDTH));
896 }
897
898 void screen_show_desktop(gboolean show, gboolean restore_focus)
899 {
900     GList *it;
901      
902     if (show == screen_showing_desktop) return; /* no change */
903
904     screen_showing_desktop = show;
905
906     if (show) {
907         /* bottom to top */
908         for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
909             if (WINDOW_IS_CLIENT(it->data)) {
910                 ObClient *client = it->data;
911                 client_showhide(client);
912             }
913         }
914     } else {
915         /* top to bottom */
916         for (it = stacking_list; it; it = g_list_next(it)) {
917             if (WINDOW_IS_CLIENT(it->data)) {
918                 ObClient *client = it->data;
919                 client_showhide(client);
920             }
921         }
922     }
923
924     if (show) {
925         /* focus desktop */
926         for (it = focus_order; it; it = g_list_next(it)) {
927             ObClient *c = it->data;
928             if (c->type == OB_CLIENT_TYPE_DESKTOP &&
929                 (c->desktop == screen_desktop || c->desktop == DESKTOP_ALL) &&
930                 client_focus(it->data))
931                 break;
932         }
933     } else if (restore_focus) {
934         ObClient *c;
935
936         /* use NULL for the "old" argument because the desktop was focused
937            and we don't want to fallback to the desktop by default */
938         if ((c = focus_fallback_target(TRUE, NULL)))
939             client_focus(c);
940     }
941
942     show = !!show; /* make it boolean */
943     PROP_SET32(RootWindow(ob_display, ob_screen),
944                net_showing_desktop, cardinal, show);
945 }
946
947 void screen_install_colormap(ObClient *client, gboolean install)
948 {
949     if (client == NULL) {
950         if (install)
951             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
952         else
953             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
954     } else {
955         xerror_set_ignore(TRUE);
956         if (install) {
957             if (client->colormap != None)
958                 XInstallColormap(RrDisplay(ob_rr_inst), client->colormap);
959         } else
960             XUninstallColormap(RrDisplay(ob_rr_inst), client->colormap);
961         xerror_set_ignore(FALSE);
962     }
963 }
964
965 static inline void
966 screen_area_add_strut_left(const StrutPartial *s, const Rect *monitor_area,
967                            gint edge, Strut *ret)
968 {
969     if (s->left &&
970         ((s->left_end <= s->left_start) ||
971          (RECT_TOP(*monitor_area) < s->left_end &&
972           RECT_BOTTOM(*monitor_area) > s->left_start)))
973         ret->left = MAX(ret->left, edge);
974 }
975
976 static inline void
977 screen_area_add_strut_top(const StrutPartial *s, const Rect *monitor_area,
978                           gint edge, Strut *ret)
979 {
980     if (s->top &&
981         ((s->top_end <= s->top_start) ||
982          (RECT_LEFT(*monitor_area) < s->top_end &&
983           RECT_RIGHT(*monitor_area) > s->top_start)))
984         ret->top = MAX(ret->top, edge);
985 }
986
987 static inline void
988 screen_area_add_strut_right(const StrutPartial *s, const Rect *monitor_area,
989                             gint edge, Strut *ret)
990 {
991     if (s->right &&
992         ((s->right_end <= s->right_start) ||
993          (RECT_TOP(*monitor_area) < s->right_end &&
994           RECT_BOTTOM(*monitor_area) > s->right_start)))
995         ret->right = MAX(ret->right, edge);
996 }
997
998 static inline void
999 screen_area_add_strut_bottom(const StrutPartial *s, const Rect *monitor_area,
1000                              gint edge, Strut *ret)
1001 {
1002     if (s->bottom &&
1003         ((s->bottom_end <= s->bottom_start) ||
1004          (RECT_LEFT(*monitor_area) < s->bottom_end &&
1005           RECT_RIGHT(*monitor_area) > s->bottom_start)))
1006         ret->bottom = MAX(ret->bottom, edge);
1007 }
1008
1009 void screen_update_areas()
1010 {
1011     guint i, x;
1012     gulong *dims;
1013     GList *it;
1014     gint o;
1015
1016     g_free(monitor_area);
1017     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
1018
1019     if (area) {
1020         for (i = 0; area[i]; ++i)
1021             g_free(area[i]);
1022         g_free(area);
1023     }
1024
1025     area = g_new(Rect*, screen_num_desktops + 2);
1026     for (i = 0; i < screen_num_desktops + 1; ++i)
1027         area[i] = g_new0(Rect, screen_num_monitors + 1);
1028     area[i] = NULL;
1029      
1030     dims = g_new(gulong, 4 * screen_num_desktops);
1031
1032     for (i = 0; i < screen_num_desktops + 1; ++i) {
1033         Strut *struts;
1034         gint l, r, t, b;
1035
1036         struts = g_new0(Strut, screen_num_monitors);
1037
1038         /* calc the xinerama areas */
1039         for (x = 0; x < screen_num_monitors; ++x) {
1040             area[i][x] = monitor_area[x];
1041             if (x == 0) {
1042                 l = monitor_area[x].x;
1043                 t = monitor_area[x].y;
1044                 r = monitor_area[x].x + monitor_area[x].width - 1;
1045                 b = monitor_area[x].y + monitor_area[x].height - 1;
1046             } else {
1047                 l = MIN(l, monitor_area[x].x);
1048                 t = MIN(t, monitor_area[x].y);
1049                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
1050                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
1051             }
1052         }
1053         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
1054
1055         /* apply the struts */
1056
1057         /* find the left-most xin heads, i do this in 2 loops :| */
1058         o = area[i][0].x;
1059         for (x = 1; x < screen_num_monitors; ++x)
1060             o = MIN(o, area[i][x].x);
1061
1062         for (x = 0; x < screen_num_monitors; ++x) {
1063             for (it = client_list; it; it = g_list_next(it)) {
1064                 ObClient *c = it->data;
1065                 screen_area_add_strut_left(&c->strut,
1066                                            &monitor_area[x],
1067                                            o + c->strut.left - area[i][x].x,
1068                                            &struts[x]);
1069             }
1070             screen_area_add_strut_left(&dock_strut,
1071                                        &monitor_area[x],
1072                                        o + dock_strut.left - area[i][x].x,
1073                                        &struts[x]);
1074
1075             area[i][x].x += struts[x].left;
1076             area[i][x].width -= struts[x].left;
1077         }
1078
1079         /* find the top-most xin heads, i do this in 2 loops :| */
1080         o = area[i][0].y;
1081         for (x = 1; x < screen_num_monitors; ++x)
1082             o = MIN(o, area[i][x].y);
1083
1084         for (x = 0; x < screen_num_monitors; ++x) {
1085             for (it = client_list; it; it = g_list_next(it)) {
1086                 ObClient *c = it->data;
1087                 screen_area_add_strut_top(&c->strut,
1088                                            &monitor_area[x],
1089                                            o + c->strut.top - area[i][x].y,
1090                                            &struts[x]);
1091             }
1092             screen_area_add_strut_top(&dock_strut,
1093                                       &monitor_area[x],
1094                                       o + dock_strut.top - area[i][x].y,
1095                                       &struts[x]);
1096
1097             area[i][x].y += struts[x].top;
1098             area[i][x].height -= struts[x].top;
1099         }
1100
1101         /* find the right-most xin heads, i do this in 2 loops :| */
1102         o = area[i][0].x + area[i][0].width - 1;
1103         for (x = 1; x < screen_num_monitors; ++x)
1104             o = MAX(o, area[i][x].x + area[i][x].width - 1);
1105
1106         for (x = 0; x < screen_num_monitors; ++x) {
1107             for (it = client_list; it; it = g_list_next(it)) {
1108                 ObClient *c = it->data;
1109                 screen_area_add_strut_right(&c->strut,
1110                                            &monitor_area[x],
1111                                            (area[i][x].x +
1112                                             area[i][x].width - 1) -
1113                                             (o - c->strut.right),
1114                                             &struts[x]);
1115             }
1116             screen_area_add_strut_right(&dock_strut,
1117                                         &monitor_area[x],
1118                                         (area[i][x].x +
1119                                          area[i][x].width - 1) -
1120                                         (o - dock_strut.right),
1121                                         &struts[x]);
1122
1123             area[i][x].width -= struts[x].right;
1124         }
1125
1126         /* find the bottom-most xin heads, i do this in 2 loops :| */
1127         o = area[i][0].y + area[i][0].height - 1;
1128         for (x = 1; x < screen_num_monitors; ++x)
1129             o = MAX(o, area[i][x].y + area[i][x].height - 1);
1130
1131         for (x = 0; x < screen_num_monitors; ++x) {
1132             for (it = client_list; it; it = g_list_next(it)) {
1133                 ObClient *c = it->data;
1134                 screen_area_add_strut_bottom(&c->strut,
1135                                              &monitor_area[x],
1136                                              (area[i][x].y +
1137                                               area[i][x].height - 1) - \
1138                                              (o - c->strut.bottom),
1139                                              &struts[x]);
1140             }
1141             screen_area_add_strut_bottom(&dock_strut,
1142                                          &monitor_area[x],
1143                                          (area[i][x].y +
1144                                           area[i][x].height - 1) - \
1145                                          (o - dock_strut.bottom),
1146                                          &struts[x]);
1147
1148             area[i][x].height -= struts[x].bottom;
1149         }
1150
1151         l = RECT_LEFT(area[i][0]);
1152         t = RECT_TOP(area[i][0]);
1153         r = RECT_RIGHT(area[i][0]);
1154         b = RECT_BOTTOM(area[i][0]);
1155         for (x = 1; x < screen_num_monitors; ++x) {
1156             l = MIN(l, RECT_LEFT(area[i][x]));
1157             t = MIN(l, RECT_TOP(area[i][x]));
1158             r = MAX(r, RECT_RIGHT(area[i][x]));
1159             b = MAX(b, RECT_BOTTOM(area[i][x]));
1160         }
1161         RECT_SET(area[i][screen_num_monitors], l, t,
1162                  r - l + 1, b - t + 1);
1163
1164         /* XXX optimize when this is run? */
1165
1166         /* the area has changed, adjust all the maximized 
1167            windows */
1168         for (it = client_list; it; it = g_list_next(it)) {
1169             ObClient *c = it->data; 
1170             if (i < screen_num_desktops) {
1171                 if (c->desktop == i)
1172                     client_reconfigure(c);
1173             } else if (c->desktop == DESKTOP_ALL)
1174                 client_reconfigure(c);
1175         }
1176         if (i < screen_num_desktops) {
1177             /* don't set these for the 'all desktops' area */
1178             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1179             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1180             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1181             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1182         }
1183
1184         g_free(struts);
1185     }
1186
1187     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1188                 dims, 4 * screen_num_desktops);
1189
1190     g_free(dims);
1191 }
1192
1193 Rect *screen_area(guint desktop)
1194 {
1195     return screen_area_monitor(desktop, screen_num_monitors);
1196 }
1197
1198 Rect *screen_area_monitor(guint desktop, guint head)
1199 {
1200     if (head > screen_num_monitors)
1201         return NULL;
1202     if (desktop >= screen_num_desktops) {
1203         if (desktop == DESKTOP_ALL)
1204             return &area[screen_num_desktops][head];
1205         return NULL;
1206     }
1207     return &area[desktop][head];
1208 }
1209
1210 guint screen_find_monitor(Rect *search)
1211 {
1212     guint i;
1213     guint most = 0;
1214     guint mostv = 0;
1215
1216     for (i = 0; i < screen_num_monitors; ++i) {
1217         Rect *area = screen_physical_area_monitor(i);
1218         if (RECT_INTERSECTS_RECT(*area, *search)) {
1219             Rect r;
1220             guint v;
1221
1222             RECT_SET_INTERSECTION(r, *area, *search);
1223             v = r.width * r.height;
1224
1225             if (v > mostv) {
1226                 mostv = v;
1227                 most = i;
1228             }
1229         }
1230     }
1231     return most;
1232 }
1233
1234 Rect *screen_physical_area()
1235 {
1236     return screen_physical_area_monitor(screen_num_monitors);
1237 }
1238
1239 Rect *screen_physical_area_monitor(guint head)
1240 {
1241     if (head > screen_num_monitors)
1242         return NULL;
1243     return &monitor_area[head];
1244 }
1245
1246 void screen_set_root_cursor()
1247 {
1248     if (sn_app_starting())
1249         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1250                       ob_cursor(OB_CURSOR_BUSY));
1251     else
1252         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1253                       ob_cursor(OB_CURSOR_POINTER));
1254 }
1255
1256 gboolean screen_pointer_pos(gint *x, gint *y)
1257 {
1258     Window w;
1259     gint i;
1260     guint u;
1261
1262     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1263                            &w, &w, x, y, &i, &i, &u);
1264 }