]> Dogcows Code - chaz/openbox/blob - src/BaseDisplay.cc
projects / chaz / openbox / blob
? search:


901efea44f86343f6ae0d94e5ec5e71b31836319
[chaz/openbox] / src / BaseDisplay.cc
1 // BaseDisplay.cc for Openbox
2 // Copyright (c) 2001 Sean 'Shaleh' Perry <shaleh@debian.org>
3 // Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining a
6 // copy of this software and associated documentation files (the "Software"),
7 // to deal in the Software without restriction, including without limitation
8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 // and/or sell copies of the Software, and to permit persons to whom the
10 // Software is furnished to do so, subject to the following conditions:
11 //
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
14 //
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 // DEALINGS IN THE SOFTWARE.
22
23 // stupid macros needed to access some functions in version 2 of the GNU C
24 // library
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif // _GNU_SOURCE
28
29 #ifdef HAVE_CONFIG_H
30 # include "../config.h"
31 #endif // HAVE_CONFIG_H
32
33 #include <X11/Xlib.h>
34 #include <X11/Xatom.h>
35 #include <X11/Xutil.h>
36 #include <X11/cursorfont.h>
37 #include <X11/keysym.h>
38
39 #ifdef SHAPE
40 # include <X11/extensions/shape.h>
41 #endif // SHAPE
42
43 #ifdef HAVE_FCNTL_H
44 # include <fcntl.h>
45 #endif // HAVE_FCNTL_H
46
47 #ifdef HAVE_STDIO_H
48 # include <stdio.h>
49 #endif // HAVE_STDIO_H
50
51 #ifdef HAVE_STDLIB_H
52 # include <stdlib.h>
53 #endif // HAVE_STDLIB_H
54
55 #ifdef HAVE_STRING_H
56 # include <string.h>
57 #endif // HAVE_STRING_H
58
59 #ifdef HAVE_UNISTD_H
60 # include <sys/types.h>
61 # include <unistd.h>
62 #endif // HAVE_UNISTD_H
63
64 #ifdef HAVE_SYS_SELECT_H
65 # include <sys/select.h>
66 #endif // HAVE_SYS_SELECT_H
67
68 #ifdef HAVE_SIGNAL_H
69 # include <signal.h>
70 #endif // HAVE_SIGNAL_H
71
72 #ifndef SA_NODEFER
73 # ifdef SA_INTERRUPT
74 # define SA_NODEFER SA_INTERRUPT
75 # else // !SA_INTERRUPT
76 # define SA_NODEFER (0)
77 # endif // SA_INTERRUPT
78 #endif // SA_NODEFER
79
80 #ifdef HAVE_SYS_WAIT_H
81 # include <sys/types.h>
82 # include <sys/wait.h>
83 #endif // HAVE_SYS_WAIT_H
84
85 #if defined(HAVE_PROCESS_H) && defined(__EMX__)
86 # include <process.h>
87 #endif // HAVE_PROCESS_H __EMX__
88
89 #include "i18n.h"
90 #include "BaseDisplay.h"
91 #include "LinkedList.h"
92 #include "Timer.h"
93
94 #include <algorithm>
95
96 // X error handler to handle any and all X errors while the application is
97 // running
98 static Bool internal_error = False;
99 static Window last_bad_window = None;
100
101 BaseDisplay *base_display;
102
103 static int handleXErrors(Display *d, XErrorEvent *e) {
104 #ifdef DEBUG
105 char errtxt[128];
106
107 XGetErrorText(d, e->error_code, errtxt, 128);
108 fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayXError,
109 "%s: X error: %s(%d) opcodes %d/%d\n resource 0x%lx\n"),
110 base_display->getApplicationName(), errtxt, e->error_code,
111 e->request_code, e->minor_code, e->resourceid);
112 #endif // DEBUG
113
114 if (e->error_code == BadWindow) last_bad_window = e->resourceid;
115 if (internal_error) abort();
116
117 return(False);
118 }
119
120
121 // signal handler to allow for proper and gentle shutdown
122
123 #ifndef HAVE_SIGACTION
124 static RETSIGTYPE signalhandler(int sig) {
125 #else // HAVE_SIGACTION
126 static void signalhandler(int sig) {
127 #endif // HAVE_SIGACTION
128
129 static int re_enter = 0;
130
131 switch (sig) {
132 case SIGCHLD:
133 int status;
134 waitpid(-1, &status, WNOHANG | WUNTRACED);
135
136 #ifndef HAVE_SIGACTION
137 // assume broken, braindead sysv signal semantics
138 signal(SIGCHLD, (RETSIGTYPE (*)(int)) signalhandler);
139 #endif // HAVE_SIGACTION
140
141 break;
142
143 default:
144 if (base_display->handleSignal(sig)) {
145
146 #ifndef HAVE_SIGACTION
147 // assume broken, braindead sysv signal semantics
148 signal(sig, (RETSIGTYPE (*)(int)) signalhandler);
149 #endif // HAVE_SIGACTION
150
151 return;
152 }
153
154 fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplaySignalCaught,
155 "%s: signal %d caught\n"),
156 base_display->getApplicationName(), sig);
157
158 if (! base_display->isStartup() && ! re_enter) {
159 internal_error = True;
160
161 re_enter = 1;
162 fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayShuttingDown,
163 "shutting down\n"));
164 base_display->shutdown();
165 }
166
167 if (sig != SIGTERM && sig != SIGINT) {
168 fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayAborting,
169 "aborting... dumping core\n"));
170 abort();
171 }
172
173 exit(0);
174
175 break;
176 }
177 }
178
179
180 // convenience functions
181 #ifndef __EMX__
182 void bexec(const char *command, char* displaystring) {
183 if (! fork()) {
184 setsid();
185 putenv(displaystring);
186 execl("/bin/sh", "/bin/sh", "-c", command, NULL);
187 exit(0);
188 }
189 }
190 #endif // !__EMX__
191
192 char *bstrdup(const char *s) {
193 const int l = strlen(s) + 1;
194 char *n = new char[l];
195 strncpy(n, s, l);
196 return n;
197 }
198
199 BaseDisplay::BaseDisplay(const char *app_name, char *dpy_name) {
200 application_name = bstrdup(app_name);
201
202 _startup = True;
203 _shutdown = False;
204 server_grabs = 0;
205 last_bad_window = None;
206
207 ::base_display = this;
208
209 #ifdef HAVE_SIGACTION
210 struct sigaction action;
211
212 action.sa_handler = signalhandler;
213 action.sa_mask = sigset_t();
214 action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
215
216 sigaction(SIGPIPE, &action, NULL);
217 sigaction(SIGSEGV, &action, NULL);
218 sigaction(SIGFPE, &action, NULL);
219 sigaction(SIGTERM, &action, NULL);
220 sigaction(SIGINT, &action, NULL);
221 sigaction(SIGCHLD, &action, NULL);
222 sigaction(SIGHUP, &action, NULL);
223 sigaction(SIGUSR1, &action, NULL);
224 sigaction(SIGUSR2, &action, NULL);
225 #else // !HAVE_SIGACTION
226 signal(SIGPIPE, (RETSIGTYPE (*)(int)) signalhandler);
227 signal(SIGSEGV, (RETSIGTYPE (*)(int)) signalhandler);
228 signal(SIGFPE, (RETSIGTYPE (*)(int)) signalhandler);
229 signal(SIGTERM, (RETSIGTYPE (*)(int)) signalhandler);
230 signal(SIGINT, (RETSIGTYPE (*)(int)) signalhandler);
231 signal(SIGUSR1, (RETSIGTYPE (*)(int)) signalhandler);
232 signal(SIGUSR2, (RETSIGTYPE (*)(int)) signalhandler);
233 signal(SIGHUP, (RETSIGTYPE (*)(int)) signalhandler);
234 signal(SIGCHLD, (RETSIGTYPE (*)(int)) signalhandler);
235 #endif // HAVE_SIGACTION
236
237 if (! (display = XOpenDisplay(dpy_name))) {
238 fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayXConnectFail,
239 "BaseDisplay::BaseDisplay: connection to X server failed.\n"));
240 ::exit(2);
241 } else if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) {
242 fprintf(stderr,
243 i18n->getMessage(BaseDisplaySet, BaseDisplayCloseOnExecFail,
244 "BaseDisplay::BaseDisplay: couldn't mark display connection "
245 "as close-on-exec\n"));
246 ::exit(2);
247 }
248
249 number_of_screens = ScreenCount(display);
250 display_name = XDisplayName(dpy_name);
251
252 #ifdef SHAPE
253 shape.extensions = XShapeQueryExtension(display, &shape.event_basep,
254 &shape.error_basep);
255 #else // !SHAPE
256 shape.extensions = False;
257 #endif // SHAPE
258
259 xa_wm_colormap_windows =
260 XInternAtom(display, "WM_COLORMAP_WINDOWS", False);
261 xa_wm_protocols = XInternAtom(display, "WM_PROTOCOLS", False);
262 xa_wm_state = XInternAtom(display, "WM_STATE", False);
263 xa_wm_change_state = XInternAtom(display, "WM_CHANGE_STATE", False);
264 xa_wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False);
265 xa_wm_take_focus = XInternAtom(display, "WM_TAKE_FOCUS", False);
266 motif_wm_hints = XInternAtom(display, "_MOTIF_WM_HINTS", False);
267
268 openbox_hints = XInternAtom(display, "_BLACKBOX_HINTS", False);
269 openbox_attributes = XInternAtom(display, "_BLACKBOX_ATTRIBUTES", False);
270 openbox_change_attributes =
271 XInternAtom(display, "_BLACKBOX_CHANGE_ATTRIBUTES", False);
272
273 openbox_structure_messages =
274 XInternAtom(display, "_BLACKBOX_STRUCTURE_MESSAGES", False);
275 openbox_notify_startup =
276 XInternAtom(display, "_BLACKBOX_NOTIFY_STARTUP", False);
277 openbox_notify_window_add =
278 XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_ADD", False);
279 openbox_notify_window_del =
280 XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_DEL", False);
281 openbox_notify_current_workspace =
282 XInternAtom(display, "_BLACKBOX_NOTIFY_CURRENT_WORKSPACE", False);
283 openbox_notify_workspace_count =
284 XInternAtom(display, "_BLACKBOX_NOTIFY_WORKSPACE_COUNT", False);
285 openbox_notify_window_focus =
286 XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_FOCUS", False);
287 openbox_notify_window_raise =
288 XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_RAISE", False);
289 openbox_notify_window_lower =
290 XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_LOWER", False);
291
292 openbox_change_workspace =
293 XInternAtom(display, "_BLACKBOX_CHANGE_WORKSPACE", False);
294 openbox_change_window_focus =
295 XInternAtom(display, "_BLACKBOX_CHANGE_WINDOW_FOCUS", False);
296 openbox_cycle_window_focus =
297 XInternAtom(display, "_BLACKBOX_CYCLE_WINDOW_FOCUS", False);
298
299 #ifdef NEWWMSPEC
300
301 net_supported = XInternAtom(display, "_NET_SUPPORTED", False);
302 net_client_list = XInternAtom(display, "_NET_CLIENT_LIST", False);
303 net_client_list_stacking = XInternAtom(display, "_NET_CLIENT_LIST_STACKING", False);
304 net_number_of_desktops = XInternAtom(display, "_NET_NUMBER_OF_DESKTOPS", False);
305 net_desktop_geometry = XInternAtom(display, "_NET_DESKTOP_GEOMETRY", False);
306 net_desktop_viewport = XInternAtom(display, "_NET_DESKTOP_VIEWPORT", False);
307 net_current_desktop = XInternAtom(display, "_NET_CURRENT_DESKTOP", False);
308 net_desktop_names = XInternAtom(display, "_NET_DESKTOP_NAMES", False);
309 net_active_window = XInternAtom(display, "_NET_ACTIVE_WINDOW", False);
310 net_workarea = XInternAtom(display, "_NET_WORKAREA", False);
311 net_supporting_wm_check = XInternAtom(display, "_NET_SUPPORTING_WM_CHECK", False);
312 net_virtual_roots = XInternAtom(display, "_NET_VIRTUAL_ROOTS", False);
313
314 net_close_window = XInternAtom(display, "_NET_CLOSE_WINDOW", False);
315 net_wm_moveresize = XInternAtom(display, "_NET_WM_MOVERESIZE", False);
316
317 net_properties = XInternAtom(display, "_NET_PROPERTIES", False);
318 net_wm_name = XInternAtom(display, "_NET_WM_NAME", False);
319 net_wm_desktop = XInternAtom(display, "_NET_WM_DESKTOP", False);
320 net_wm_window_type = XInternAtom(display, "_NET_WM_WINDOW_TYPE", False);
321 net_wm_state = XInternAtom(display, "_NET_WM_STATE", False);
322 net_wm_strut = XInternAtom(display, "_NET_WM_STRUT", False);
323 net_wm_icon_geometry = XInternAtom(display, "_NET_WM_ICON_GEOMETRY", False);
324 net_wm_icon = XInternAtom(display, "_NET_WM_ICON", False);
325 net_wm_pid = XInternAtom(display, "_NET_WM_PID", False);
326 net_wm_handled_icons = XInternAtom(display, "_NET_WM_HANDLED_ICONS", False);
327
328 net_wm_ping = XInternAtom(display, "_NET_WM_PING", False);
329
330 #endif // NEWWMSPEC
331
332 cursor.session = XCreateFontCursor(display, XC_left_ptr);
333 cursor.move = XCreateFontCursor(display, XC_fleur);
334 cursor.ll_angle = XCreateFontCursor(display, XC_ll_angle);
335 cursor.lr_angle = XCreateFontCursor(display, XC_lr_angle);
336 cursor.ul_angle = XCreateFontCursor(display, XC_ul_angle);
337 cursor.ur_angle = XCreateFontCursor(display, XC_ur_angle);
338
339 XSetErrorHandler((XErrorHandler) handleXErrors);
340
341 screenInfoList.reserve(ScreenCount(display));
342 for (int i = 0; i < number_of_screens; i++)
343 screenInfoList.push_back(new ScreenInfo(*this, i));
344
345 #ifndef NOCLOBBER
346 NumLockMask = ScrollLockMask = 0;
347
348 const XModifierKeymap* const modmap = XGetModifierMapping(display);
349 if (modmap && modmap->max_keypermod > 0) {
350 const int mask_table[] = {
351 ShiftMask, LockMask, ControlMask, Mod1Mask,
352 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
353 };
354 const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
355 modmap->max_keypermod;
356 // get the values of the keyboard lock modifiers
357 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
358 // since it doesn't need to be.
359 const KeyCode num_lock_code = XKeysymToKeycode(display, XK_Num_Lock);
360 const KeyCode scroll_lock_code = XKeysymToKeycode(display, XK_Scroll_Lock);
361
362 for (size_t cnt = 0; cnt < size; ++cnt) {
363 if (! modmap->modifiermap[cnt]) continue;
364
365 if (num_lock_code == modmap->modifiermap[cnt])
366 NumLockMask = mask_table[cnt / modmap->max_keypermod];
367 if (scroll_lock_code == modmap->modifiermap[cnt])
368 ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
369 }
370 }
371
372 MaskList[0] = 0;
373 MaskList[1] = LockMask;
374 MaskList[2] = NumLockMask;
375 MaskList[3] = ScrollLockMask;
376 MaskList[4] = LockMask | NumLockMask;
377 MaskList[5] = NumLockMask | ScrollLockMask;
378 MaskList[6] = LockMask | ScrollLockMask;
379 MaskList[7] = LockMask | NumLockMask | ScrollLockMask;
380 MaskListLength = sizeof(MaskList) / sizeof(MaskList[0]);
381
382 if (modmap) XFreeModifiermap(const_cast<XModifierKeymap*>(modmap));
383 #else
384 NumLockMask = Mod2Mask;
385 ScrollLockMask = Mod5Mask;
386 #endif // NOCLOBBER
387 }
388
389
390 BaseDisplay::~BaseDisplay(void) {
391 std::for_each(screenInfoList.begin(), screenInfoList.end(),
392 PointerAssassin());
393 // we don't create the BTimers, we don't delete them
394
395 if (application_name != NULL)
396 delete [] application_name;
397
398 XCloseDisplay(display);
399 }
400
401
402 void BaseDisplay::eventLoop(void) {
403 run();
404
405 int xfd = ConnectionNumber(display);
406
407 while ((! _shutdown) && (! internal_error)) {
408 if (XPending(display)) {
409 XEvent e;
410 XNextEvent(display, &e);
411
412 if (last_bad_window != None && e.xany.window == last_bad_window) {
413 #ifdef DEBUG
414 fprintf(stderr, i18n->getMessage(BaseDisplaySet,
415 BaseDisplayBadWindowRemove,
416 "BaseDisplay::eventLoop(): removing bad window "
417 "from event queue\n"));
418 #endif // DEBUG
419 } else {
420 last_bad_window = None;
421 process_event(&e);
422 }
423 } else {
424 fd_set rfds;
425 timeval now, tm, *timeout = (timeval *) 0;
426
427 FD_ZERO(&rfds);
428 FD_SET(xfd, &rfds);
429
430 if (!timerList.empty()) {
431 gettimeofday(&now, 0);
432
433 tm.tv_sec = tm.tv_usec = 0l;
434
435 BTimer *timer = timerList.front();
436 ASSERT(timer != NULL);
437
438 tm.tv_sec = timer->getStartTime().tv_sec +
439 timer->getTimeout().tv_sec - now.tv_sec;
440 tm.tv_usec = timer->getStartTime().tv_usec +
441 timer->getTimeout().tv_usec - now.tv_usec;
442
443 while (tm.tv_usec >= 1000000) {
444 tm.tv_sec++;
445 tm.tv_usec -= 1000000;
446 }
447
448 while (tm.tv_usec < 0) {
449 if (tm.tv_sec > 0) {
450 tm.tv_sec--;
451 tm.tv_usec += 1000000;
452 } else {
453 tm.tv_usec = 0;
454 break;
455 }
456 }
457
458 timeout = &tm;
459 }
460
461 select(xfd + 1, &rfds, 0, 0, timeout);
462
463 // check for timer timeout
464 gettimeofday(&now, 0);
465
466 TimerList::iterator it;
467 for (it = timerList.begin(); it != timerList.end(); ) {
468 BTimer *timer = *it;
469 ++it; // the timer may be removed from the list, so move ahead now
470 ASSERT(timer != NULL);
471 tm.tv_sec = timer->getStartTime().tv_sec +
472 timer->getTimeout().tv_sec;
473 tm.tv_usec = timer->getStartTime().tv_usec +
474 timer->getTimeout().tv_usec;
475
476 if ((now.tv_sec < tm.tv_sec) ||
477 (now.tv_sec == tm.tv_sec && now.tv_usec < tm.tv_usec))
478 break;
479
480 timer->fireTimeout();
481
482 // restart the current timer so that the start time is updated
483 if (! timer->doOnce())
484 timer->start();
485 else {
486 timer->stop();
487 // delete timer; // USE THIS?
488 }
489 }
490 }
491 }
492 }
493
494
495 const Bool BaseDisplay::validateWindow(Window window) {
496 XEvent event;
497 if (XCheckTypedWindowEvent(display, window, DestroyNotify, &event)) {
498 XPutBackEvent(display, &event);
499
500 return False;
501 }
502
503 return True;
504 }
505
506
507 void BaseDisplay::grab(void) {
508 if (! server_grabs++)
509 XGrabServer(display);
510 }
511
512
513 void BaseDisplay::ungrab(void) {
514 if (! --server_grabs)
515 XUngrabServer(display);
516
517 if (server_grabs < 0) server_grabs = 0;
518 }
519
520
521 void BaseDisplay::addTimer(BTimer *timer) {
522 ASSERT(timer != (BTimer *) 0);
523 printf("ADDING TIMER\n");
524
525 TimerList::iterator it;
526 for (it = timerList.begin(); it != timerList.end(); ++it) {
527 BTimer *tmp = *it;
528 if ((tmp->getTimeout().tv_sec > timer->getTimeout().tv_sec) ||
529 ((tmp->getTimeout().tv_sec == timer->getTimeout().tv_sec) &&
530 (tmp->getTimeout().tv_usec >= timer->getTimeout().tv_usec)))
531 break;
532 }
533
534 timerList.insert(it, timer);
535 }
536
537
538 void BaseDisplay::removeTimer(BTimer *timer) {
539 printf("REMOVING TIMER\n");
540 timerList.remove(timer);
541 }
542
543
544 /*
545 * Grabs a button, but also grabs the button in every possible combination with
546 * the keyboard lock keys, so that they do not cancel out the event.
547 */
548 void BaseDisplay::grabButton(unsigned int button, unsigned int modifiers,
549 Window grab_window, Bool owner_events,
550 unsigned int event_mask, int pointer_mode,
551 int keybaord_mode, Window confine_to,
552 Cursor cursor) const
553 {
554 #ifndef NOCLOBBER
555 for (size_t cnt = 0; cnt < MaskListLength; ++cnt)
556 XGrabButton(display, button, modifiers | MaskList[cnt], grab_window,
557 owner_events, event_mask, pointer_mode, keybaord_mode,
558 confine_to, cursor);
559 #else // NOCLOBBER
560 XGrabButton(display, button, modifiers, grab_window,
561 owner_events, event_mask, pointer_mode, keybaord_mode,
562 confine_to, cursor);
563 #endif // NOCLOBBER
564 }
565
566 /*
567 * Releases the grab on a button, and ungrabs all possible combinations of the
568 * keyboard lock keys.
569 */
570 void BaseDisplay::ungrabButton(unsigned int button, unsigned int modifiers,
571 Window grab_window) const {
572 #ifndef NOCLOBBER
573 for (size_t cnt = 0; cnt < MaskListLength; ++cnt)
574 XUngrabButton(display, button, modifiers | MaskList[cnt], grab_window);
575 #else // NOCLOBBER
576 XUngrabButton(display, button, modifiers, grab_window);
577 #endif // NOCLOBBER
578 }
579
580
581 ScreenInfo::ScreenInfo(BaseDisplay &d, int num) : basedisplay(d),
582 screen_number(num)
583 {
584
585 root_window = RootWindow(basedisplay.getXDisplay(), screen_number);
586 depth = DefaultDepth(basedisplay.getXDisplay(), screen_number);
587
588 m_size = Size(WidthOfScreen(ScreenOfDisplay(basedisplay.getXDisplay(),
589 screen_number)),
590 HeightOfScreen(ScreenOfDisplay(basedisplay.getXDisplay(),
591 screen_number)));
592
593 // search for a TrueColor Visual... if we can't find one... we will use the
594 // default visual for the screen
595 XVisualInfo vinfo_template, *vinfo_return;
596 int vinfo_nitems;
597
598 vinfo_template.screen = screen_number;
599 vinfo_template.c_class = TrueColor;
600
601 visual = (Visual *) 0;
602
603 if ((vinfo_return = XGetVisualInfo(basedisplay.getXDisplay(),
604 VisualScreenMask | VisualClassMask,
605 &vinfo_template, &vinfo_nitems)) &&
606 vinfo_nitems > 0) {
607 for (int i = 0; i < vinfo_nitems; i++) {
608 if (depth < (vinfo_return + i)->depth) {
609 depth = (vinfo_return + i)->depth;
610 visual = (vinfo_return + i)->visual;
611 }
612 }
613
614 XFree(vinfo_return);
615 }
616
617 if (visual) {
618 colormap = XCreateColormap(basedisplay.getXDisplay(), root_window,
619 visual, AllocNone);
620 } else {
621 visual = DefaultVisual(basedisplay.getXDisplay(), screen_number);
622 colormap = DefaultColormap(basedisplay.getXDisplay(), screen_number);
623 }
624 }
my patches for the openbox window manager
This page took 0.058538 seconds and 4 git commands to generate.