use the new ptr cursor defn
[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 = 48;
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     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_SETA32(ob_root, net_supported, atom, supported, num_support);
144     g_free(supported);
145
146     return TRUE;
147 }
148
149 void screen_startup()
150 {
151     GSList *it;
152     guint i;
153
154     /* get the initial size */
155     screen_resize();
156
157     /* set the names */
158     screen_desktop_names = g_new(char*,
159                                  g_slist_length(config_desktops_names) + 1);
160     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
161         screen_desktop_names[i] = it->data; /* dont strdup */
162     screen_desktop_names[i] = NULL;
163     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
164     g_free(screen_desktop_names); /* dont free the individual strings */
165     screen_desktop_names = NULL;
166
167     screen_num_desktops = 0;
168     screen_set_num_desktops(config_desktops_num);
169     screen_desktop = 0;
170     screen_set_desktop(0);
171
172     /* don't start in showing-desktop mode */
173     screen_showing_desktop = FALSE;
174     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
175
176     screen_update_layout();
177 }
178
179 void screen_shutdown()
180 {
181     XSelectInput(ob_display, ob_root, NoEventMask);
182
183     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
184     PROP_ERASE(ob_root, net_supported); /* not without us */
185     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
186
187     XDestroyWindow(ob_display, support_window);
188
189     g_strfreev(screen_desktop_names);
190     g_free(strut);
191     g_free(area);
192 }
193
194 void screen_resize()
195 {
196     /* XXX RandR support here? */
197     guint32 geometry[2];
198
199     /* Set the _NET_DESKTOP_GEOMETRY hint */
200     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
201     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
202     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
203     screen_physical_size.width = geometry[0];
204     screen_physical_size.height = geometry[1];
205
206     if (ob_state == State_Starting)
207         return;
208
209     screen_update_struts();
210
211     /* XXX adjust more stuff ? */
212 }
213
214 void screen_set_num_desktops(guint num)
215 {
216     guint i, old;
217     guint32 *viewport;
218     GList *it;
219
220     g_assert(num > 0);
221
222     old = screen_num_desktops;
223     screen_num_desktops = num;
224     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
225
226     /* set the viewport hint */
227     viewport = g_new0(guint32, num * 2);
228     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
229     g_free(viewport);
230
231     /* change our struts/area to match */
232     screen_update_struts();
233
234     /* the number of rows/columns will differ */
235     screen_update_layout();
236
237     /* may be some unnamed desktops that we need to fill in with names */
238     screen_update_desktop_names();
239
240     /* update the focus lists */
241     /* free our lists for the desktops which have disappeared */
242     for (i = num; i < old; ++i)
243         g_list_free(focus_order[i]);
244     /* realloc the array */
245     focus_order = g_renew(GList*, focus_order, num);
246     /* set the new lists to be empty */
247     for (i = old; i < num; ++i)
248         focus_order[i] = NULL;
249
250     /* move windows on desktops that will no longer exist! */
251     for (it = client_list; it != NULL; it = it->next) {
252         Client *c = it->data;
253         if (c->desktop >= num)
254             client_set_desktop(c, num - 1, FALSE);
255     }
256
257     dispatch_ob(Event_Ob_NumDesktops, num, old);
258
259     /* change our desktop if we're on one that no longer exists! */
260     if (screen_desktop >= screen_num_desktops)
261         screen_set_desktop(num - 1);
262 }
263
264 void screen_set_desktop(guint num)
265 {
266     GList *it;
267     guint old;
268     XEvent e;
269      
270     g_assert(num < screen_num_desktops);
271
272     old = screen_desktop;
273     screen_desktop = num;
274     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
275
276     if (old == num) return;
277
278     g_message("Moving to desktop %d", num+1);
279
280     /* show windows before hiding the rest to lessen the enter/leave events */
281
282     /* show windows from top to bottom */
283     for (it = stacking_list; it != NULL; it = it->next) {
284         Client *c = it->data;
285         if (!c->frame->visible && client_should_show(c))
286             frame_show(c->frame);
287     }
288
289     /* hide windows from bottom to top */
290     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
291         Client *c = it->data;
292         if (c->frame->visible && !client_should_show(c))
293             frame_hide(c->frame);
294     }
295
296     /* focus the last focused window on the desktop, and ignore enter events
297        from the switch so it doesnt mess with the focus */
298     XSync(ob_display, FALSE);
299     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
300     focus_fallback(Fallback_Desktop);
301
302     dispatch_ob(Event_Ob_Desktop, num, old);
303 }
304
305 void screen_update_layout()
306 {
307     guint32 *data = NULL;
308     guint num;
309
310     /* defaults */
311     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
312     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
313     screen_desktop_layout.rows = 1;
314     screen_desktop_layout.columns = screen_num_desktops;
315
316     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
317         if (num == 3 || num == 4) {
318             if (data[0] == prop_atoms.net_wm_orientation_vert)
319                 screen_desktop_layout.orientation = data[0];
320             if (num == 3)
321                 screen_desktop_layout.start_corner =
322                     prop_atoms.net_wm_topright;
323             else {
324                 if (data[3] == prop_atoms.net_wm_topright)
325                     screen_desktop_layout.start_corner = data[3];
326                 else if (data[3] == prop_atoms.net_wm_bottomright)
327                     screen_desktop_layout.start_corner = data[3];
328                 else if (data[3] == prop_atoms.net_wm_bottomleft)
329                     screen_desktop_layout.start_corner = data[3];
330             }
331
332             /* fill in a zero rows/columns */
333             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
334                 if (data[1] == 0) {
335                     data[1] = (screen_num_desktops +
336                                screen_num_desktops % data[2]) / data[2];
337                 } else if (data[2] == 0) {
338                     data[2] = (screen_num_desktops +
339                                screen_num_desktops % data[1]) / data[1];
340                 }
341                 screen_desktop_layout.columns = data[1];
342                 screen_desktop_layout.rows = data[2];
343             }
344
345             /* bounds checking */
346             if (screen_desktop_layout.orientation ==
347                 prop_atoms.net_wm_orientation_horz) {
348                 if (screen_desktop_layout.rows > screen_num_desktops)
349                     screen_desktop_layout.rows = screen_num_desktops;
350                 if (screen_desktop_layout.columns >
351                     ((screen_num_desktops + screen_num_desktops %
352                       screen_desktop_layout.rows) /
353                      screen_desktop_layout.rows))
354                     screen_desktop_layout.columns =
355                         (screen_num_desktops + screen_num_desktops %
356                          screen_desktop_layout.rows) /
357                         screen_desktop_layout.rows;
358             } else {
359                 if (screen_desktop_layout.columns > screen_num_desktops)
360                     screen_desktop_layout.columns = screen_num_desktops;
361                 if (screen_desktop_layout.rows >
362                     ((screen_num_desktops + screen_num_desktops %
363                       screen_desktop_layout.columns) /
364                      screen_desktop_layout.columns))
365                     screen_desktop_layout.rows =
366                         (screen_num_desktops + screen_num_desktops %
367                          screen_desktop_layout.columns) /
368                         screen_desktop_layout.columns;
369             }
370         }
371         g_free(data);
372     }
373 }
374
375 void screen_update_desktop_names()
376 {
377     guint i;
378
379     /* empty the array */
380     g_strfreev(screen_desktop_names);
381     screen_desktop_names = NULL;
382
383     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
384         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
385     else
386         i = 0;
387     if (i <= screen_num_desktops) {
388         screen_desktop_names = g_renew(char*, screen_desktop_names,
389                                        screen_num_desktops + 1);
390         screen_desktop_names[screen_num_desktops] = NULL;
391         for (; i < screen_num_desktops; ++i)
392             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
393     }
394 }
395
396 void screen_show_desktop(gboolean show)
397 {
398     GList *it;
399      
400     if (show == screen_showing_desktop) return; /* no change */
401
402     screen_showing_desktop = show;
403
404     if (show) {
405         /* bottom to top */
406         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
407             Client *client = it->data;
408             if (client->frame->visible && !client_should_show(client))
409                 frame_hide(client->frame);
410         }
411     } else {
412         /* top to bottom */
413         for (it = stacking_list; it != NULL; it = it->next) {
414             Client *client = it->data;
415             if (!client->frame->visible && client_should_show(client))
416                 frame_show(client->frame);
417         }
418     }
419
420     show = !!show; /* make it boolean */
421     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
422
423     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
424 }
425
426 void screen_install_colormap(Client *client, gboolean install)
427 {
428     XWindowAttributes wa;
429
430     if (client == NULL) {
431         if (install)
432             XInstallColormap(ob_display, render_colormap);
433         else
434             XUninstallColormap(ob_display, render_colormap);
435     } else {
436         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
437             wa.colormap != None) {
438             if (install)
439                 XInstallColormap(ob_display, wa.colormap);
440             else
441                 XUninstallColormap(ob_display, wa.colormap);
442         }
443     }
444 }
445
446 void screen_update_struts()
447 {
448     GList *it;
449     guint i;
450      
451     g_free(strut);
452     strut = g_new0(Strut, screen_num_desktops + 1);
453
454     for (it = client_list; it != NULL; it = it->next) {
455         Client *c = it->data;
456         if (c->iconic) continue; /* these dont count in the strut */
457     
458         if (c->desktop == 0xffffffff) {
459             for (i = 0; i < screen_num_desktops; ++i)
460                 STRUT_ADD(strut[i], c->strut);
461         } else {
462             g_assert(c->desktop < screen_num_desktops);
463             STRUT_ADD(strut[c->desktop], c->strut);
464         }
465         /* apply to the 'all desktops' strut */
466         STRUT_ADD(strut[screen_num_desktops], c->strut);
467     }
468     screen_update_area();
469 }
470
471 static void screen_update_area()
472 {
473     guint i;
474     guint32 *dims;
475
476     g_free(area);
477     area = g_new0(Rect, screen_num_desktops + 1);
478      
479     dims = g_new(guint32, 4 * screen_num_desktops);
480     for (i = 0; i < screen_num_desktops + 1; ++i) {
481         Rect old_area = area[i];
482 /*
483   #ifdef    XINERAMA
484   // reset to the full areas
485   if (isXineramaActive())
486   xineramaUsableArea = getXineramaAreas();
487   #endif // XINERAMA
488 */
489
490         RECT_SET(area[i], strut[i].left, strut[i].top,
491                  screen_physical_size.width - (strut[i].left +
492                                                strut[i].right),
493                  screen_physical_size.height - (strut[i].top +
494                                                 strut[i].bottom));
495     
496 /*
497   #ifdef    XINERAMA
498   if (isXineramaActive()) {
499   // keep each of the ximerama-defined areas inside the strut
500   RectList::iterator xit, xend = xineramaUsableArea.end();
501   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
502   if (xit->x() < usableArea.x()) {
503   xit->setX(usableArea.x());
504   xit->setWidth(xit->width() - usableArea.x());
505   }
506   if (xit->y() < usableArea.y()) {
507   xit->setY(usableArea.y());
508   xit->setHeight(xit->height() - usableArea.y());
509   }
510   if (xit->x() + xit->width() > usableArea.width())
511   xit->setWidth(usableArea.width() - xit->x());
512   if (xit->y() + xit->height() > usableArea.height())
513   xit->setHeight(usableArea.height() - xit->y());
514   }
515   }
516   #endif // XINERAMA
517 */
518         if (!RECT_EQUAL(old_area, area[i])) {
519             /* the area has changed, adjust all the maximized windows */
520             GList *it;
521             for (it = client_list; it; it = it->next) {
522                 Client *c = it->data;
523                 if (i < screen_num_desktops) {
524                     if (c->desktop == i)
525                         client_remaximize(c);
526                 } else {
527                     /* the 'all desktops' size */
528                     if (c->desktop == DESKTOP_ALL)
529                         client_remaximize(c);
530                 }
531             }
532         }
533
534         /* don't set these for the 'all desktops' area */
535         if (i < screen_num_desktops) {
536             dims[(i * 4) + 0] = area[i].x;
537             dims[(i * 4) + 1] = area[i].y;
538             dims[(i * 4) + 2] = area[i].width;
539             dims[(i * 4) + 3] = area[i].height;
540         }
541     }
542     PROP_SETA32(ob_root, net_workarea, cardinal,
543                 dims, 4 * screen_num_desktops);
544     g_free(dims);
545 }
546
547 Rect *screen_area(guint desktop)
548 {
549     if (desktop >= screen_num_desktops) {
550         if (desktop == DESKTOP_ALL)
551             return &area[screen_num_desktops];
552         return NULL;
553     }
554     return &area[desktop];
555 }
556
557 Strut *screen_strut(guint desktop)
558 {
559     if (desktop >= screen_num_desktops) {
560         if (desktop == DESKTOP_ALL)
561             return &strut[screen_num_desktops];
562         return NULL;
563     }
564     return &strut[desktop];
565 }