add support for net_moveresize_window and net_wm_moveresize
[dana/openbox.git] / openbox / screen.c
1 #include "openbox.h"
2 #include "prop.h"
3 #include "config.h"
4 #include "screen.h"
5 #include "client.h"
6 #include "frame.h"
7 #include "focus.h"
8 #include "dispatch.h"
9 #include "../render/render.h"
10
11 #include <X11/Xlib.h>
12 #ifdef HAVE_UNISTD_H
13 #  include <sys/types.h>
14 #  include <unistd.h>
15 #endif
16
17 /*! The event mask to grab on the root window */
18 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
19                         EnterWindowMask | LeaveWindowMask | \
20                         SubstructureNotifyMask | SubstructureRedirectMask | \
21                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
22
23 guint    screen_num_desktops    = 0;
24 guint    screen_desktop         = 0;
25 Size     screen_physical_size;
26 gboolean screen_showing_desktop;
27 DesktopLayout screen_desktop_layout;
28 char   **screen_desktop_names = NULL;
29
30 static Rect  *area = NULL;
31 static Strut *strut = NULL;
32 static Window support_window = None;
33
34 static void screen_update_area();
35
36 static gboolean running;
37 static int another_running(Display *d, XErrorEvent *e)
38 {
39     (void)d;(void)e;
40     g_message("A window manager is already running on screen %d",
41               ob_screen);
42     running = TRUE;
43     return -1;
44 }
45
46 gboolean screen_annex()
47 {
48     XErrorHandler old;
49     pid_t pid;
50     int i, num_support;
51     guint32 *supported;
52
53     running = FALSE;
54     old = XSetErrorHandler(another_running);
55     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
56     XSync(ob_display, FALSE);
57     XSetErrorHandler(old);
58     if (running)
59         return FALSE;
60
61     g_message("Managing screen %d", ob_screen);
62
63     /* set the mouse cursor for the root window (the default cursor) */
64     XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
65
66     /* set the OPENBOX_PID hint */
67     pid = getpid();
68     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
69
70     /* create the netwm support window */
71     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
72
73     /* set supporting window */
74     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
75
76     /* set properties on the supporting window */
77     PROP_SETS(support_window, net_wm_name, "Openbox");
78     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
79
80     /* set the _NET_SUPPORTED_ATOMS hint */
81     num_support = 61;
82     i = 0;
83     supported = g_new(guint32, num_support);
84     supported[i++] = prop_atoms.net_current_desktop;
85     supported[i++] = prop_atoms.net_number_of_desktops;
86     supported[i++] = prop_atoms.net_desktop_geometry;
87     supported[i++] = prop_atoms.net_desktop_viewport;
88     supported[i++] = prop_atoms.net_active_window;
89     supported[i++] = prop_atoms.net_workarea;
90     supported[i++] = prop_atoms.net_client_list;
91     supported[i++] = prop_atoms.net_client_list_stacking;
92     supported[i++] = prop_atoms.net_desktop_names;
93     supported[i++] = prop_atoms.net_close_window;
94     supported[i++] = prop_atoms.net_desktop_layout;
95     supported[i++] = prop_atoms.net_showing_desktop;
96     supported[i++] = prop_atoms.net_wm_name;
97     supported[i++] = prop_atoms.net_wm_visible_name;
98     supported[i++] = prop_atoms.net_wm_icon_name;
99     supported[i++] = prop_atoms.net_wm_visible_icon_name;
100     supported[i++] = prop_atoms.net_wm_desktop;
101     supported[i++] = prop_atoms.net_wm_strut;
102     supported[i++] = prop_atoms.net_wm_window_type;
103     supported[i++] = prop_atoms.net_wm_window_type_desktop;
104     supported[i++] = prop_atoms.net_wm_window_type_dock;
105     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
106     supported[i++] = prop_atoms.net_wm_window_type_menu;
107     supported[i++] = prop_atoms.net_wm_window_type_utility;
108     supported[i++] = prop_atoms.net_wm_window_type_splash;
109     supported[i++] = prop_atoms.net_wm_window_type_dialog;
110     supported[i++] = prop_atoms.net_wm_window_type_normal;
111     supported[i++] = prop_atoms.net_wm_allowed_actions;
112     supported[i++] = prop_atoms.net_wm_action_move;
113     supported[i++] = prop_atoms.net_wm_action_resize;
114     supported[i++] = prop_atoms.net_wm_action_minimize;
115     supported[i++] = prop_atoms.net_wm_action_shade;
116     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
117     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
118     supported[i++] = prop_atoms.net_wm_action_fullscreen;
119     supported[i++] = prop_atoms.net_wm_action_change_desktop;
120     supported[i++] = prop_atoms.net_wm_action_close;
121     supported[i++] = prop_atoms.net_wm_state;
122     supported[i++] = prop_atoms.net_wm_state_modal;
123     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
124     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
125     supported[i++] = prop_atoms.net_wm_state_shaded;
126     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
127     supported[i++] = prop_atoms.net_wm_state_skip_pager;
128     supported[i++] = prop_atoms.net_wm_state_hidden;
129     supported[i++] = prop_atoms.net_wm_state_fullscreen;
130     supported[i++] = prop_atoms.net_wm_state_above;
131     supported[i++] = prop_atoms.net_wm_state_below;
132     supported[i++] = prop_atoms.net_moveresize_window;
133     supported[i++] = prop_atoms.net_wm_moveresize;
134     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
135     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
136     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
137     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
138     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
139     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
140     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
141     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
142     supported[i++] = prop_atoms.net_wm_moveresize_move;
143     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
144     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
145     g_assert(i == num_support);
146 /*
147   supported[] = prop_atoms.net_wm_action_stick;
148 */
149
150     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
151     g_free(supported);
152
153     return TRUE;
154 }
155
156 void screen_startup()
157 {
158     GSList *it;
159     guint i;
160
161     /* get the initial size */
162     screen_resize();
163
164     /* set the names */
165     screen_desktop_names = g_new(char*,
166                                  g_slist_length(config_desktops_names) + 1);
167     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
168         screen_desktop_names[i] = it->data; /* dont strdup */
169     screen_desktop_names[i] = NULL;
170     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
171     g_free(screen_desktop_names); /* dont free the individual strings */
172     screen_desktop_names = NULL;
173
174     screen_num_desktops = 0;
175     screen_set_num_desktops(config_desktops_num);
176     screen_desktop = 0;
177     screen_set_desktop(0);
178
179     /* don't start in showing-desktop mode */
180     screen_showing_desktop = FALSE;
181     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
182
183     screen_update_layout();
184 }
185
186 void screen_shutdown()
187 {
188     XSelectInput(ob_display, ob_root, NoEventMask);
189
190     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
191     PROP_ERASE(ob_root, net_supported); /* not without us */
192     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
193
194     XDestroyWindow(ob_display, support_window);
195
196     g_strfreev(screen_desktop_names);
197     g_free(strut);
198     g_free(area);
199 }
200
201 void screen_resize()
202 {
203     /* XXX RandR support here? */
204     guint32 geometry[2];
205
206     /* Set the _NET_DESKTOP_GEOMETRY hint */
207     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
208     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
209     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
210     screen_physical_size.width = geometry[0];
211     screen_physical_size.height = geometry[1];
212
213     if (ob_state == State_Starting)
214         return;
215
216     screen_update_struts();
217
218     /* XXX adjust more stuff ? */
219 }
220
221 void screen_set_num_desktops(guint num)
222 {
223     guint i, old;
224     guint32 *viewport;
225     GList *it;
226
227     g_assert(num > 0);
228
229     old = screen_num_desktops;
230     screen_num_desktops = num;
231     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
232
233     /* set the viewport hint */
234     viewport = g_new0(guint32, num * 2);
235     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
236     g_free(viewport);
237
238     /* change our struts/area to match */
239     screen_update_struts();
240
241     /* the number of rows/columns will differ */
242     screen_update_layout();
243
244     /* may be some unnamed desktops that we need to fill in with names */
245     screen_update_desktop_names();
246
247     /* update the focus lists */
248     /* free our lists for the desktops which have disappeared */
249     for (i = num; i < old; ++i)
250         g_list_free(focus_order[i]);
251     /* realloc the array */
252     focus_order = g_renew(GList*, focus_order, num);
253     /* set the new lists to be empty */
254     for (i = old; i < num; ++i)
255         focus_order[i] = NULL;
256
257     /* move windows on desktops that will no longer exist! */
258     for (it = client_list; it != NULL; it = it->next) {
259         Client *c = it->data;
260         if (c->desktop >= num)
261             client_set_desktop(c, num - 1, FALSE);
262     }
263
264     dispatch_ob(Event_Ob_NumDesktops, num, old);
265
266     /* change our desktop if we're on one that no longer exists! */
267     if (screen_desktop >= screen_num_desktops)
268         screen_set_desktop(num - 1);
269 }
270
271 void screen_set_desktop(guint num)
272 {
273     GList *it;
274     guint old;
275     XEvent e;
276      
277     g_assert(num < screen_num_desktops);
278
279     old = screen_desktop;
280     screen_desktop = num;
281     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
282
283     if (old == num) return;
284
285     g_message("Moving to desktop %d", num+1);
286
287     /* show windows before hiding the rest to lessen the enter/leave events */
288
289     /* show windows from top to bottom */
290     for (it = stacking_list; it != NULL; it = it->next) {
291         Client *c = it->data;
292         if (!c->frame->visible && client_should_show(c))
293             frame_show(c->frame);
294     }
295
296     /* hide windows from bottom to top */
297     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
298         Client *c = it->data;
299         if (c->frame->visible && !client_should_show(c))
300             frame_hide(c->frame);
301     }
302
303     /* focus the last focused window on the desktop, and ignore enter events
304        from the switch so it doesnt mess with the focus */
305     XSync(ob_display, FALSE);
306     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
307     focus_fallback(Fallback_Desktop);
308
309     dispatch_ob(Event_Ob_Desktop, num, old);
310 }
311
312 void screen_update_layout()
313 {
314     guint32 *data = NULL;
315     guint num;
316
317     /* defaults */
318     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
319     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
320     screen_desktop_layout.rows = 1;
321     screen_desktop_layout.columns = screen_num_desktops;
322
323     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
324         if (num == 3 || num == 4) {
325             if (data[0] == prop_atoms.net_wm_orientation_vert)
326                 screen_desktop_layout.orientation = data[0];
327             if (num == 3)
328                 screen_desktop_layout.start_corner =
329                     prop_atoms.net_wm_topright;
330             else {
331                 if (data[3] == prop_atoms.net_wm_topright)
332                     screen_desktop_layout.start_corner = data[3];
333                 else if (data[3] == prop_atoms.net_wm_bottomright)
334                     screen_desktop_layout.start_corner = data[3];
335                 else if (data[3] == prop_atoms.net_wm_bottomleft)
336                     screen_desktop_layout.start_corner = data[3];
337             }
338
339             /* fill in a zero rows/columns */
340             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
341                 if (data[1] == 0) {
342                     data[1] = (screen_num_desktops +
343                                screen_num_desktops % data[2]) / data[2];
344                 } else if (data[2] == 0) {
345                     data[2] = (screen_num_desktops +
346                                screen_num_desktops % data[1]) / data[1];
347                 }
348                 screen_desktop_layout.columns = data[1];
349                 screen_desktop_layout.rows = data[2];
350             }
351
352             /* bounds checking */
353             if (screen_desktop_layout.orientation ==
354                 prop_atoms.net_wm_orientation_horz) {
355                 if (screen_desktop_layout.rows > screen_num_desktops)
356                     screen_desktop_layout.rows = screen_num_desktops;
357                 if (screen_desktop_layout.columns >
358                     ((screen_num_desktops + screen_num_desktops %
359                       screen_desktop_layout.rows) /
360                      screen_desktop_layout.rows))
361                     screen_desktop_layout.columns =
362                         (screen_num_desktops + screen_num_desktops %
363                          screen_desktop_layout.rows) /
364                         screen_desktop_layout.rows;
365             } else {
366                 if (screen_desktop_layout.columns > screen_num_desktops)
367                     screen_desktop_layout.columns = screen_num_desktops;
368                 if (screen_desktop_layout.rows >
369                     ((screen_num_desktops + screen_num_desktops %
370                       screen_desktop_layout.columns) /
371                      screen_desktop_layout.columns))
372                     screen_desktop_layout.rows =
373                         (screen_num_desktops + screen_num_desktops %
374                          screen_desktop_layout.columns) /
375                         screen_desktop_layout.columns;
376             }
377         }
378         g_free(data);
379     }
380 }
381
382 void screen_update_desktop_names()
383 {
384     guint i;
385
386     /* empty the array */
387     g_strfreev(screen_desktop_names);
388     screen_desktop_names = NULL;
389
390     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
391         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
392     else
393         i = 0;
394     if (i <= screen_num_desktops) {
395         screen_desktop_names = g_renew(char*, screen_desktop_names,
396                                        screen_num_desktops + 1);
397         screen_desktop_names[screen_num_desktops] = NULL;
398         for (; i < screen_num_desktops; ++i)
399             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
400     }
401 }
402
403 void screen_show_desktop(gboolean show)
404 {
405     GList *it;
406      
407     if (show == screen_showing_desktop) return; /* no change */
408
409     screen_showing_desktop = show;
410
411     if (show) {
412         /* bottom to top */
413         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
414             Client *client = it->data;
415             if (client->frame->visible && !client_should_show(client))
416                 frame_hide(client->frame);
417         }
418     } else {
419         /* top to bottom */
420         for (it = stacking_list; it != NULL; it = it->next) {
421             Client *client = it->data;
422             if (!client->frame->visible && client_should_show(client))
423                 frame_show(client->frame);
424         }
425     }
426
427     show = !!show; /* make it boolean */
428     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
429
430     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
431 }
432
433 void screen_install_colormap(Client *client, gboolean install)
434 {
435     XWindowAttributes wa;
436
437     if (client == NULL) {
438         if (install)
439             XInstallColormap(ob_display, render_colormap);
440         else
441             XUninstallColormap(ob_display, render_colormap);
442     } else {
443         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
444             wa.colormap != None) {
445             if (install)
446                 XInstallColormap(ob_display, wa.colormap);
447             else
448                 XUninstallColormap(ob_display, wa.colormap);
449         }
450     }
451 }
452
453 void screen_update_struts()
454 {
455     GList *it;
456     guint i;
457      
458     g_free(strut);
459     strut = g_new0(Strut, screen_num_desktops + 1);
460
461     for (it = client_list; it != NULL; it = it->next) {
462         Client *c = it->data;
463         if (c->iconic) continue; /* these dont count in the strut */
464     
465         if (c->desktop == 0xffffffff) {
466             for (i = 0; i < screen_num_desktops; ++i)
467                 STRUT_ADD(strut[i], c->strut);
468         } else {
469             g_assert(c->desktop < screen_num_desktops);
470             STRUT_ADD(strut[c->desktop], c->strut);
471         }
472         /* apply to the 'all desktops' strut */
473         STRUT_ADD(strut[screen_num_desktops], c->strut);
474     }
475     screen_update_area();
476 }
477
478 static void screen_update_area()
479 {
480     guint i;
481     guint32 *dims;
482
483     g_free(area);
484     area = g_new0(Rect, screen_num_desktops + 1);
485      
486     dims = g_new(guint32, 4 * screen_num_desktops);
487     for (i = 0; i < screen_num_desktops + 1; ++i) {
488         Rect old_area = area[i];
489 /*
490   #ifdef    XINERAMA
491   // reset to the full areas
492   if (isXineramaActive())
493   xineramaUsableArea = getXineramaAreas();
494   #endif // XINERAMA
495 */
496
497         RECT_SET(area[i], strut[i].left, strut[i].top,
498                  screen_physical_size.width - (strut[i].left +
499                                                strut[i].right),
500                  screen_physical_size.height - (strut[i].top +
501                                                 strut[i].bottom));
502     
503 /*
504   #ifdef    XINERAMA
505   if (isXineramaActive()) {
506   // keep each of the ximerama-defined areas inside the strut
507   RectList::iterator xit, xend = xineramaUsableArea.end();
508   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
509   if (xit->x() < usableArea.x()) {
510   xit->setX(usableArea.x());
511   xit->setWidth(xit->width() - usableArea.x());
512   }
513   if (xit->y() < usableArea.y()) {
514   xit->setY(usableArea.y());
515   xit->setHeight(xit->height() - usableArea.y());
516   }
517   if (xit->x() + xit->width() > usableArea.width())
518   xit->setWidth(usableArea.width() - xit->x());
519   if (xit->y() + xit->height() > usableArea.height())
520   xit->setHeight(usableArea.height() - xit->y());
521   }
522   }
523   #endif // XINERAMA
524 */
525         if (!RECT_EQUAL(old_area, area[i])) {
526             /* the area has changed, adjust all the maximized windows */
527             GList *it;
528             for (it = client_list; it; it = it->next) {
529                 Client *c = it->data;
530                 if (i < screen_num_desktops) {
531                     if (c->desktop == i)
532                         client_remaximize(c);
533                 } else {
534                     /* the 'all desktops' size */
535                     if (c->desktop == DESKTOP_ALL)
536                         client_remaximize(c);
537                 }
538             }
539         }
540
541         /* don't set these for the 'all desktops' area */
542         if (i < screen_num_desktops) {
543             dims[(i * 4) + 0] = area[i].x;
544             dims[(i * 4) + 1] = area[i].y;
545             dims[(i * 4) + 2] = area[i].width;
546             dims[(i * 4) + 3] = area[i].height;
547         }
548     }
549     PROP_SETA32(ob_root, net_workarea, cardinal,
550                 dims, 4 * screen_num_desktops);
551     g_free(dims);
552 }
553
554 Rect *screen_area(guint desktop)
555 {
556     if (desktop >= screen_num_desktops) {
557         if (desktop == DESKTOP_ALL)
558             return &area[screen_num_desktops];
559         return NULL;
560     }
561     return &area[desktop];
562 }
563
564 Strut *screen_strut(guint desktop)
565 {
566     if (desktop >= screen_num_desktops) {
567         if (desktop == DESKTOP_ALL)
568             return &strut[screen_num_desktops];
569         return NULL;
570     }
571     return &strut[desktop];
572 }