]> Dogcows Code - chaz/openbox/blob - openbox/screen.c
erase the openbox_pid hint on the root window when we shutdown
[chaz/openbox] / 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
33 static void screen_update_area();
34
35 static gboolean running;
36 static int another_running(Display *d, XErrorEvent *e)
37 {
38 (void)d;(void)e;
39 g_message("A window manager is already running on screen %d",
40 ob_screen);
41 running = TRUE;
42 return -1;
43 }
44
45 gboolean screen_annex()
46 {
47 XErrorHandler old;
48 Window support;
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 = 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);
75
76 /* set properties on the supporting window */
77 PROP_SETS(support, net_wm_name, utf8, "Openbox");
78 PROP_SET32(support, net_supporting_wm_check, window, support);
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_set_num_desktops(4);
157 screen_set_desktop(0);
158
159 /* don't start in showing-desktop mode */
160 screen_showing_desktop = FALSE;
161 PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
162
163 screen_update_layout();
164 }
165
166 void screen_shutdown()
167 {
168 guint i;
169
170 PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
171
172 for (i = 0; i < screen_desktop_names->len; ++i)
173 g_free(g_ptr_array_index(screen_desktop_names, i));
174 g_ptr_array_free(screen_desktop_names, TRUE);
175 g_free(strut);
176 g_free(area);
177 }
178
179 void screen_resize()
180 {
181 /* Set the _NET_DESKTOP_GEOMETRY hint */
182 /* XXX RandR support here? */
183 int geometry[2];
184
185 geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
186 geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
187 PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
188 screen_physical_size.width = geometry[0];
189 screen_physical_size.height = geometry[1];
190
191 if (ob_state == State_Starting)
192 return;
193
194 screen_update_struts();
195
196 /* XXX adjust more stuff ? */
197 }
198
199 void screen_set_num_desktops(guint num)
200 {
201 guint i, old;
202 gulong *viewport;
203
204 g_assert(num > 0);
205
206 /* move windows on desktops that will no longer exist! */
207 /* XXX
208 std::list<Client*>::iterator it, end = clients.end();
209 for (it = clients.begin(); it != end; ++it) {
210 unsigned int d = (*it)->desktop();
211 if (d >= num && d != 0xffffffff) {
212 XEvent ce;
213 ce.xclient.type = ClientMessage;
214 ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
215 ce.xclient.display = **otk::display;
216 ce.xclient.window = (*it)->window();
217 ce.xclient.format = 32;
218 ce.xclient.data.l[0] = num - 1;
219 XSendEvent(**otk::display, _info->rootWindow(), false,
220 SubstructureNotifyMask | SubstructureRedirectMask, &ce);
221 }
222 }
223 */
224
225 old = screen_num_desktops;
226 screen_num_desktops = num;
227 PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
228
229 /* set the viewport hint */
230 viewport = g_new0(gulong, num * 2);
231 PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
232 g_free(viewport);
233
234 /* change our struts/area to match */
235 screen_update_struts();
236
237 /* the number of rows/columns will differ */
238 screen_update_layout();
239
240 /* may be some unnamed desktops that we need to fill in with names */
241 screen_update_desktop_names();
242
243 /* update the focus lists */
244 /* free our lists for the desktops which have disappeared */
245 for (i = num; i < old; ++i)
246 g_list_free(focus_order[i]);
247 /* realloc the array */
248 focus_order = g_renew(GList*, focus_order, num);
249 /* set the new lists to be empty */
250 for (i = old; i < num; ++i)
251 focus_order[i] = NULL;
252
253 dispatch_ob(Event_Ob_NumDesktops, num, old);
254
255 /* change our desktop if we're on one that no longer exists! */
256 if (screen_desktop >= screen_num_desktops)
257 screen_set_desktop(num - 1);
258 }
259
260 void screen_set_desktop(guint num)
261 {
262 GList *it;
263 guint old;
264
265 g_assert(num < screen_num_desktops);
266
267 g_message("Moving to desktop %u", num);
268
269 old = screen_desktop;
270 screen_desktop = num;
271 PROP_SET32(ob_root, net_current_desktop, cardinal, num);
272
273 if (old == num) return;
274
275 /* hide windows from bottom to top */
276 for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
277 Client *c = it->data;
278 if (c->frame->visible && !client_should_show(c))
279 engine_frame_hide(c->frame);
280 }
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 engine_frame_show(c->frame);
287 }
288
289 dispatch_ob(Event_Ob_Desktop, num, old);
290 }
291
292 void screen_update_layout()
293 {
294 unsigned long *data = NULL;
295
296 /* defaults */
297 screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
298 screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
299 screen_desktop_layout.rows = 1;
300 screen_desktop_layout.columns = screen_num_desktops;
301
302 if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
303 if (data[0] == prop_atoms.net_wm_orientation_vert)
304 screen_desktop_layout.orientation = data[0];
305 if (data[3] == prop_atoms.net_wm_topright)
306 screen_desktop_layout.start_corner = data[3];
307 else if (data[3] == prop_atoms.net_wm_bottomright)
308 screen_desktop_layout.start_corner = data[3];
309 else if (data[3] == prop_atoms.net_wm_bottomleft)
310 screen_desktop_layout.start_corner = data[3];
311
312 /* fill in a zero rows/columns */
313 if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
314 if (data[1] == 0) {
315 data[1] = (screen_num_desktops +
316 screen_num_desktops % data[2]) / data[2];
317 } else if (data[2] == 0) {
318 data[2] = (screen_num_desktops +
319 screen_num_desktops % data[1]) / data[1];
320 }
321 screen_desktop_layout.columns = data[1];
322 screen_desktop_layout.rows = data[2];
323 }
324
325 /* bounds checking */
326 if (screen_desktop_layout.orientation ==
327 prop_atoms.net_wm_orientation_horz) {
328 if (screen_desktop_layout.rows > screen_num_desktops)
329 screen_desktop_layout.rows = screen_num_desktops;
330 if (screen_desktop_layout.columns > ((screen_num_desktops +
331 screen_num_desktops %
332 screen_desktop_layout.rows) /
333 screen_desktop_layout.rows))
334 screen_desktop_layout.columns =
335 (screen_num_desktops + screen_num_desktops %
336 screen_desktop_layout.rows) /
337 screen_desktop_layout.rows;
338 } else {
339 if (screen_desktop_layout.columns > screen_num_desktops)
340 screen_desktop_layout.columns = screen_num_desktops;
341 if (screen_desktop_layout.rows > ((screen_num_desktops +
342 screen_num_desktops %
343 screen_desktop_layout.columns) /
344 screen_desktop_layout.columns))
345 screen_desktop_layout.rows =
346 (screen_num_desktops + screen_num_desktops %
347 screen_desktop_layout.columns) /
348 screen_desktop_layout.columns;
349 }
350 g_free(data);
351 }
352 }
353
354 void screen_update_desktop_names()
355 {
356 guint i;
357
358 /* empty the array */
359 for (i = 0; i < screen_desktop_names->len; ++i)
360 g_free(g_ptr_array_index(screen_desktop_names, i));
361 g_ptr_array_set_size(screen_desktop_names, 0);
362
363 PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
364
365 while (screen_desktop_names->len < screen_num_desktops)
366 g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
367 }
368
369 void screen_show_desktop(gboolean show)
370 {
371 GList *it;
372 static Window saved_focus = 0;
373
374 if (show == screen_showing_desktop) return; /* no change */
375
376 /* save the window focus, and restore it when leaving the show-desktop
377 mode */
378 if (show && focus_client)
379 saved_focus = focus_client->window;
380
381 screen_showing_desktop = show;
382
383 if (show) {
384 /* bottom to top */
385 for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
386 Client *client = it->data;
387 if (client->type == Type_Desktop)
388 client_focus(client);
389 else if (client->frame->visible && !client_should_show(client))
390 engine_frame_hide(client->frame);
391 }
392 } else {
393 /* top to bottom */
394 for (it = stacking_list; it != NULL; it = it->next) {
395 Client *client = it->data;
396 if (!client->frame->visible && client_should_show(client))
397 engine_frame_show(client->frame);
398 }
399 }
400
401 if (!show) {
402 Client *f = focus_client;
403 if (!f || f->type == Type_Desktop) {
404 Client *c = g_hash_table_lookup(client_map,
405 (gpointer)saved_focus);
406 if (c) client_focus(c);
407 }
408 }
409
410 show = !!show; /* make it boolean */
411 PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
412
413 dispatch_ob(Event_Ob_ShowDesktop, show, 0);
414 }
415
416 void screen_install_colormap(Client *client, gboolean install)
417 {
418 if (client == NULL) {
419 if (install)
420 XInstallColormap(ob_display, render_colormap);
421 else
422 XUninstallColormap(ob_display, render_colormap);
423 } else {
424 XWindowAttributes wa;
425 if (XGetWindowAttributes(ob_display, client->window, &wa)) {
426 if (install)
427 XInstallColormap(ob_display, wa.colormap);
428 else
429 XUninstallColormap(ob_display, wa.colormap);
430 }
431 }
432 }
433
434 void screen_update_struts()
435 {
436 GSList *it;
437 guint i;
438
439 if (strut != NULL)
440 g_free(strut);
441 strut = g_new0(Strut, screen_num_desktops + 1);
442
443 for (it = client_list; it; it = it->next) {
444 Client *c = it->data;
445 if (c->iconic) continue; /* these dont count in the strut */
446
447 if (c->desktop == 0xffffffff) {
448 for (i = 0; i < screen_num_desktops; ++i)
449 STRUT_ADD(strut[i], c->strut);
450 } else {
451 g_assert(c->desktop < screen_num_desktops);
452 STRUT_ADD(strut[c->desktop], c->strut);
453 }
454 /* apply to the 'all desktops' strut */
455 STRUT_ADD(strut[screen_num_desktops], c->strut);
456 }
457 screen_update_area();
458 }
459
460 static void screen_update_area()
461 {
462 guint i;
463 gulong *dims;
464
465 if (area != NULL)
466 g_free(area);
467 area = g_new0(Rect, screen_num_desktops + 1);
468
469 dims = g_new(unsigned long, 4 * screen_num_desktops);
470 for (i = 0; i < screen_num_desktops + 1; ++i) {
471 Rect old_area = area[i];
472 /*
473 #ifdef XINERAMA
474 // reset to the full areas
475 if (isXineramaActive())
476 xineramaUsableArea = getXineramaAreas();
477 #endif // XINERAMA
478 */
479
480 RECT_SET(area[i], strut[i].left, strut[i].top,
481 screen_physical_size.width - (strut[i].left +
482 strut[i].right),
483 screen_physical_size.height - (strut[i].top +
484 strut[i].bottom));
485
486 /*
487 #ifdef XINERAMA
488 if (isXineramaActive()) {
489 // keep each of the ximerama-defined areas inside the strut
490 RectList::iterator xit, xend = xineramaUsableArea.end();
491 for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
492 if (xit->x() < usableArea.x()) {
493 xit->setX(usableArea.x());
494 xit->setWidth(xit->width() - usableArea.x());
495 }
496 if (xit->y() < usableArea.y()) {
497 xit->setY(usableArea.y());
498 xit->setHeight(xit->height() - usableArea.y());
499 }
500 if (xit->x() + xit->width() > usableArea.width())
501 xit->setWidth(usableArea.width() - xit->x());
502 if (xit->y() + xit->height() > usableArea.height())
503 xit->setHeight(usableArea.height() - xit->y());
504 }
505 }
506 #endif // XINERAMA
507 */
508 if (!RECT_EQUAL(old_area, area[i])) {
509 /* the area has changed, adjust all the maximized windows */
510 GSList *it;
511 for (it = client_list; it; it = it->next) {
512 Client *c = it->data;
513 if (i < screen_num_desktops) {
514 if (c->desktop == i)
515 client_remaximize(c);
516 } else {
517 /* the 'all desktops' size */
518 if (c->desktop == DESKTOP_ALL)
519 client_remaximize(c);
520 }
521 }
522 }
523
524 /* don't set these for the 'all desktops' area */
525 if (i < screen_num_desktops) {
526 dims[(i * 4) + 0] = area[i].x;
527 dims[(i * 4) + 1] = area[i].y;
528 dims[(i * 4) + 2] = area[i].width;
529 dims[(i * 4) + 3] = area[i].height;
530 }
531 }
532 PROP_SET32A(ob_root, net_workarea, cardinal,
533 dims, 4 * screen_num_desktops);
534 g_free(dims);
535 }
536
537 Rect *screen_area(guint desktop)
538 {
539 if (desktop >= screen_num_desktops) {
540 if (desktop == DESKTOP_ALL)
541 return &area[screen_num_desktops];
542 return NULL;
543 }
544 return &area[desktop];
545 }
546
547 Strut *screen_strut(guint desktop)
548 {
549 if (desktop >= screen_num_desktops) {
550 if (desktop == DESKTOP_ALL)
551 return &strut[screen_num_desktops];
552 return NULL;
553 }
554 return &strut[desktop];
555 }
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