rm the debug print
[dana/openbox.git] / openbox / screen.c
1 #include "openbox.h"
2 #include "prop.h"
3 #include "screen.h"
4 #include "client.h"
5 #include "frame.h"
6 #include "engine.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 GPtrArray *screen_desktop_names;
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     Atom *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.left_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, utf8, "Openbox");
78     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
79
80     /* set the _NET_SUPPORTED_ATOMS hint */
81     num_support = 48;
82     i = 0;
83     supported = g_new(Atom, 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     g_assert(i == num_support);
133 /*
134   supported[] = prop_atoms.net_wm_moveresize;
135   supported[] = prop_atoms.net_wm_moveresize_size_topleft;
136   supported[] = prop_atoms.net_wm_moveresize_size_topright;
137   supported[] = prop_atoms.net_wm_moveresize_size_bottomleft;
138   supported[] = prop_atoms.net_wm_moveresize_size_bottomright;
139   supported[] = prop_atoms.net_wm_moveresize_move;
140   supported[] = prop_atoms.net_wm_action_stick;
141 */
142
143     PROP_SET32A(ob_root, net_supported, atom, supported, num_support);
144     g_free(supported);
145
146     return TRUE;
147 }
148
149 void screen_startup()
150 {
151     screen_desktop_names = g_ptr_array_new();
152      
153     /* get the initial size */
154     screen_resize();
155
156     screen_num_desktops = 0;
157     screen_set_num_desktops(4);
158     screen_desktop = 0;
159     screen_set_desktop(0);
160
161     /* don't start in showing-desktop mode */
162     screen_showing_desktop = FALSE;
163     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
164
165     screen_update_layout();
166 }
167
168 void screen_shutdown()
169 {
170     guint i;
171
172     XSelectInput(ob_display, ob_root, NoEventMask);
173
174     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
175     PROP_ERASE(ob_root, net_supported); /* not without us */
176     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
177
178     XDestroyWindow(ob_display, support_window);
179
180     for (i = 0; i < screen_desktop_names->len; ++i)
181         g_free(g_ptr_array_index(screen_desktop_names, i));
182     g_ptr_array_free(screen_desktop_names, TRUE);
183     g_free(strut);
184     g_free(area);
185 }
186
187 void screen_resize()
188 {
189     /* XXX RandR support here? */
190     int geometry[2];
191
192     /* Set the _NET_DESKTOP_GEOMETRY hint */
193     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
194     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
195     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
196     screen_physical_size.width = geometry[0];
197     screen_physical_size.height = geometry[1];
198
199     if (ob_state == State_Starting)
200         return;
201
202     screen_update_struts();
203
204     /* XXX adjust more stuff ? */
205 }
206
207 void screen_set_num_desktops(guint num)
208 {
209     guint i, old;
210     gulong *viewport;
211     GSList *it;
212
213     g_assert(num > 0);
214
215     old = screen_num_desktops;
216     screen_num_desktops = num;
217     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
218
219     /* set the viewport hint */
220     viewport = g_new0(gulong, num * 2);
221     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
222     g_free(viewport);
223
224     /* change our struts/area to match */
225     screen_update_struts();
226
227     /* the number of rows/columns will differ */
228     screen_update_layout();
229
230     /* may be some unnamed desktops that we need to fill in with names */
231     screen_update_desktop_names();
232
233     /* update the focus lists */
234     /* free our lists for the desktops which have disappeared */
235     for (i = num; i < old; ++i)
236         g_list_free(focus_order[i]);
237     /* realloc the array */
238     focus_order = g_renew(GList*, focus_order, num);
239     /* set the new lists to be empty */
240     for (i = old; i < num; ++i)
241         focus_order[i] = NULL;
242
243     /* move windows on desktops that will no longer exist! */
244     for (it = client_list; it != NULL; it = it->next) {
245         Client *c = it->data;
246         if (c->desktop >= num)
247             client_set_desktop(c, num - 1);
248     }
249
250     dispatch_ob(Event_Ob_NumDesktops, num, old);
251
252     /* change our desktop if we're on one that no longer exists! */
253     if (screen_desktop >= screen_num_desktops)
254         screen_set_desktop(num - 1);
255 }
256
257 void screen_set_desktop(guint num)
258 {
259     GList *it;
260     guint old;
261      
262     g_assert(num < screen_num_desktops);
263
264     old = screen_desktop;
265     screen_desktop = num;
266     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
267
268     if (old == num) return;
269
270     /* show windows before hiding the rest to lessen the enter/leave events */
271
272     /* show windows from top to bottom */
273     for (it = stacking_list; it != NULL; it = it->next) {
274         Client *c = it->data;
275         if (!c->frame->visible && client_should_show(c))
276             engine_frame_show(c->frame);
277     }
278
279     /* hide windows from bottom to top */
280     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
281         Client *c = it->data;
282         if (c->frame->visible && !client_should_show(c))
283             engine_frame_hide(c->frame);
284     }
285
286     dispatch_ob(Event_Ob_Desktop, num, old);
287 }
288
289 void screen_update_layout()
290 {
291     unsigned long *data = NULL;
292
293     /* defaults */
294     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
295     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
296     screen_desktop_layout.rows = 1;
297     screen_desktop_layout.columns = screen_num_desktops;
298
299     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
300         if (data[0] == prop_atoms.net_wm_orientation_vert)
301             screen_desktop_layout.orientation = data[0];
302         if (data[3] == prop_atoms.net_wm_topright)
303             screen_desktop_layout.start_corner = data[3];
304         else if (data[3] == prop_atoms.net_wm_bottomright)
305             screen_desktop_layout.start_corner = data[3];
306         else if (data[3] == prop_atoms.net_wm_bottomleft)
307             screen_desktop_layout.start_corner = data[3];
308
309         /* fill in a zero rows/columns */
310         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
311             if (data[1] == 0) {
312                 data[1] = (screen_num_desktops +
313                            screen_num_desktops % data[2]) / data[2];
314             } else if (data[2] == 0) {
315                 data[2] = (screen_num_desktops +
316                            screen_num_desktops % data[1]) / data[1];
317             }
318             screen_desktop_layout.columns = data[1];
319             screen_desktop_layout.rows = data[2];
320         }
321
322         /* bounds checking */
323         if (screen_desktop_layout.orientation ==
324             prop_atoms.net_wm_orientation_horz) {
325             if (screen_desktop_layout.rows > screen_num_desktops)
326                 screen_desktop_layout.rows = screen_num_desktops;
327             if (screen_desktop_layout.columns > ((screen_num_desktops +
328                                                   screen_num_desktops %
329                                                   screen_desktop_layout.rows) /
330                                                  screen_desktop_layout.rows))
331                 screen_desktop_layout.columns =
332                     (screen_num_desktops + screen_num_desktops %
333                      screen_desktop_layout.rows) /
334                     screen_desktop_layout.rows;
335         } else {
336             if (screen_desktop_layout.columns > screen_num_desktops)
337                 screen_desktop_layout.columns = screen_num_desktops;
338             if (screen_desktop_layout.rows > ((screen_num_desktops +
339                                                screen_num_desktops %
340                                                screen_desktop_layout.columns) /
341                                               screen_desktop_layout.columns))
342                 screen_desktop_layout.rows =
343                     (screen_num_desktops + screen_num_desktops %
344                      screen_desktop_layout.columns) /
345                     screen_desktop_layout.columns;
346         }
347         g_free(data);
348     }
349 }
350
351 void screen_update_desktop_names()
352 {
353     guint i;
354
355     /* empty the array */
356     for (i = 0; i < screen_desktop_names->len; ++i)
357         g_free(g_ptr_array_index(screen_desktop_names, i));
358     g_ptr_array_set_size(screen_desktop_names, 0);
359
360     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
361
362     while (screen_desktop_names->len < screen_num_desktops)
363         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
364 }
365
366 void screen_show_desktop(gboolean show)
367 {
368     GList *it;
369      
370     if (show == screen_showing_desktop) return; /* no change */
371
372     screen_showing_desktop = show;
373
374     if (show) {
375         /* bottom to top */
376         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
377             Client *client = it->data;
378             if (client->frame->visible && !client_should_show(client))
379                 engine_frame_hide(client->frame);
380         }
381     } else {
382         /* top to bottom */
383         for (it = stacking_list; it != NULL; it = it->next) {
384             Client *client = it->data;
385             if (!client->frame->visible && client_should_show(client))
386                 engine_frame_show(client->frame);
387         }
388     }
389
390     show = !!show; /* make it boolean */
391     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
392
393     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
394 }
395
396 void screen_install_colormap(Client *client, gboolean install)
397 {
398     XWindowAttributes wa;
399
400     if (client == NULL) {
401         if (install)
402             XInstallColormap(ob_display, render_colormap);
403         else
404             XUninstallColormap(ob_display, render_colormap);
405     } else {
406         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
407             wa.colormap != None) {
408             if (install)
409                 XInstallColormap(ob_display, wa.colormap);
410             else
411                 XUninstallColormap(ob_display, wa.colormap);
412         }
413     }
414 }
415
416 void screen_update_struts()
417 {
418     GSList *it;
419     guint i;
420      
421     g_free(strut);
422     strut = g_new0(Strut, screen_num_desktops + 1);
423
424     for (it = client_list; it != NULL; it = it->next) {
425         Client *c = it->data;
426         if (c->iconic) continue; /* these dont count in the strut */
427     
428         if (c->desktop == 0xffffffff) {
429             for (i = 0; i < screen_num_desktops; ++i)
430                 STRUT_ADD(strut[i], c->strut);
431         } else {
432             g_assert(c->desktop < screen_num_desktops);
433             STRUT_ADD(strut[c->desktop], c->strut);
434         }
435         /* apply to the 'all desktops' strut */
436         STRUT_ADD(strut[screen_num_desktops], c->strut);
437     }
438     screen_update_area();
439 }
440
441 static void screen_update_area()
442 {
443     guint i;
444     gulong *dims;
445
446     g_free(area);
447     area = g_new0(Rect, screen_num_desktops + 1);
448      
449     dims = g_new(unsigned long, 4 * screen_num_desktops);
450     for (i = 0; i < screen_num_desktops + 1; ++i) {
451         Rect old_area = area[i];
452 /*
453   #ifdef    XINERAMA
454   // reset to the full areas
455   if (isXineramaActive())
456   xineramaUsableArea = getXineramaAreas();
457   #endif // XINERAMA
458 */
459
460         RECT_SET(area[i], strut[i].left, strut[i].top,
461                  screen_physical_size.width - (strut[i].left +
462                                                strut[i].right),
463                  screen_physical_size.height - (strut[i].top +
464                                                 strut[i].bottom));
465     
466 /*
467   #ifdef    XINERAMA
468   if (isXineramaActive()) {
469   // keep each of the ximerama-defined areas inside the strut
470   RectList::iterator xit, xend = xineramaUsableArea.end();
471   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
472   if (xit->x() < usableArea.x()) {
473   xit->setX(usableArea.x());
474   xit->setWidth(xit->width() - usableArea.x());
475   }
476   if (xit->y() < usableArea.y()) {
477   xit->setY(usableArea.y());
478   xit->setHeight(xit->height() - usableArea.y());
479   }
480   if (xit->x() + xit->width() > usableArea.width())
481   xit->setWidth(usableArea.width() - xit->x());
482   if (xit->y() + xit->height() > usableArea.height())
483   xit->setHeight(usableArea.height() - xit->y());
484   }
485   }
486   #endif // XINERAMA
487 */
488         if (!RECT_EQUAL(old_area, area[i])) {
489             /* the area has changed, adjust all the maximized windows */
490             GSList *it;
491             for (it = client_list; it; it = it->next) {
492                 Client *c = it->data;
493                 if (i < screen_num_desktops) {
494                     if (c->desktop == i)
495                         client_remaximize(c);
496                 } else {
497                     /* the 'all desktops' size */
498                     if (c->desktop == DESKTOP_ALL)
499                         client_remaximize(c);
500                 }
501             }
502         }
503
504         /* don't set these for the 'all desktops' area */
505         if (i < screen_num_desktops) {
506             dims[(i * 4) + 0] = area[i].x;
507             dims[(i * 4) + 1] = area[i].y;
508             dims[(i * 4) + 2] = area[i].width;
509             dims[(i * 4) + 3] = area[i].height;
510         }
511     }
512     PROP_SET32A(ob_root, net_workarea, cardinal,
513                 dims, 4 * screen_num_desktops);
514     g_free(dims);
515 }
516
517 Rect *screen_area(guint desktop)
518 {
519     if (desktop >= screen_num_desktops) {
520         if (desktop == DESKTOP_ALL)
521             return &area[screen_num_desktops];
522         return NULL;
523     }
524     return &area[desktop];
525 }
526
527 Strut *screen_strut(guint desktop)
528 {
529     if (desktop >= screen_num_desktops) {
530         if (desktop == DESKTOP_ALL)
531             return &strut[screen_num_desktops];
532         return NULL;
533     }
534     return &strut[desktop];
535 }