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Dogcows Code - chaz/openbox/blob - src/basedisplay.cc
1 // -*- mode: C++; indent-tabs-mode: nil; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
10 #include <X11/Xutil.h>
11 #include <X11/keysym.h>
14 # include <X11/extensions/shape.h>
18 # include <X11/extensions/Xinerama.h>
23 #endif // HAVE_FCNTL_H
27 #endif // HAVE_STDIO_H
31 #endif // HAVE_STDLIB_H
35 #endif // HAVE_STRING_H
38 # include <sys/types.h>
40 #endif // HAVE_UNISTD_H
42 #ifdef HAVE_SYS_SELECT_H
43 # include <sys/select.h>
44 #endif // HAVE_SYS_SELECT_H
48 #endif // HAVE_SIGNAL_H
50 #ifdef HAVE_SYS_WAIT_H
51 # include <sys/types.h>
52 # include <sys/wait.h>
53 #endif // HAVE_SYS_WAIT_H
59 #include "basedisplay.hh"
62 #include "otk/util.hh"
65 // X error handler to handle any and all X errors while the application is
67 static bool internal_error
= False
;
69 BaseDisplay
*base_display
;
71 static int handleXErrors(Display
*d
, XErrorEvent
*e
) {
75 XGetErrorText(d
, e
->error_code
, errtxt
, 128); // XXX: use this!!
76 fprintf(stderr
, "%s: X error: %s(%d) opcodes %d/%d\n resource 0x%lx\n",
77 base_display
->getApplicationName(), errtxt
, e
->error_code
,
78 e
->request_code
, e
->minor_code
, e
->resourceid
);
85 if (internal_error
) abort();
91 // signal handler to allow for proper and gentle shutdown
93 static void signalhandler(int sig
) {
95 static int re_enter
= 0;
100 waitpid(-1, &status
, WNOHANG
| WUNTRACED
);
104 if (base_display
->handleSignal(sig
))
107 fprintf(stderr
, "%s: signal %d caught\n",
108 base_display
->getApplicationName(), sig
);
110 if (! base_display
->isStartup() && ! re_enter
) {
111 internal_error
= True
;
114 fprintf(stderr
, "shutting down\n");
115 base_display
->shutdown();
118 if (sig
!= SIGTERM
&& sig
!= SIGINT
) {
119 fprintf(stderr
, "aborting... dumping core\n");
130 BaseDisplay::BaseDisplay(const char *app_name
, const char *dpy_name
) {
131 application_name
= app_name
;
135 ::base_display
= this;
137 struct sigaction action
;
139 action
.sa_handler
= signalhandler
;
140 action
.sa_mask
= sigset_t();
141 action
.sa_flags
= SA_NOCLDSTOP
| SA_NODEFER
;
143 sigaction(SIGPIPE
, &action
, NULL
);
144 sigaction(SIGSEGV
, &action
, NULL
);
145 sigaction(SIGFPE
, &action
, NULL
);
146 sigaction(SIGTERM
, &action
, NULL
);
147 sigaction(SIGINT
, &action
, NULL
);
148 sigaction(SIGCHLD
, &action
, NULL
);
149 sigaction(SIGHUP
, &action
, NULL
);
150 sigaction(SIGUSR1
, &action
, NULL
);
151 sigaction(SIGUSR2
, &action
, NULL
);
153 if (! (display
= XOpenDisplay(dpy_name
))) {
155 "BaseDisplay::BaseDisplay: connection to X server failed.\n");
157 } else if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
159 "BaseDisplay::BaseDisplay: couldn't mark display connection "
160 "as close-on-exec\n");
164 display_name
= XDisplayName(dpy_name
);
167 shape
.extensions
= XShapeQueryExtension(display
, &shape
.event_basep
,
170 shape
.extensions
= False
;
174 if (XineramaQueryExtension(display
, &xinerama
.event_basep
,
175 &xinerama
.error_basep
) &&
176 XineramaQueryVersion(display
, &xinerama
.major
, &xinerama
.minor
)) {
179 "BaseDisplay::BaseDisplay: Found Xinerama version %d.%d\n",
180 xinerama
.major
, xinerama
.minor
);
182 xinerama
.extensions
= True
;
184 xinerama
.extensions
= False
;
188 XSetErrorHandler((XErrorHandler
) handleXErrors
);
190 screenInfoList
.reserve(ScreenCount(display
));
191 for (int i
= 0; i
< ScreenCount(display
); ++i
)
192 screenInfoList
.push_back(ScreenInfo(this, i
));
194 NumLockMask
= ScrollLockMask
= 0;
196 const XModifierKeymap
* const modmap
= XGetModifierMapping(display
);
197 if (modmap
&& modmap
->max_keypermod
> 0) {
198 const int mask_table
[] = {
199 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
200 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
202 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
203 modmap
->max_keypermod
;
204 // get the values of the keyboard lock modifiers
205 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
206 // since it doesn't need to be.
207 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
208 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
210 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
211 if (! modmap
->modifiermap
[cnt
]) continue;
213 if (num_lock
== modmap
->modifiermap
[cnt
])
214 NumLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
215 if (scroll_lock
== modmap
->modifiermap
[cnt
])
216 ScrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
221 MaskList
[1] = LockMask
;
222 MaskList
[2] = NumLockMask
;
223 MaskList
[3] = LockMask
| NumLockMask
;
224 MaskList
[4] = ScrollLockMask
;
225 MaskList
[5] = ScrollLockMask
| LockMask
;
226 MaskList
[6] = ScrollLockMask
| NumLockMask
;
227 MaskList
[7] = ScrollLockMask
| LockMask
| NumLockMask
;
228 MaskListLength
= sizeof(MaskList
) / sizeof(MaskList
[0]);
230 if (modmap
) XFreeModifiermap(const_cast<XModifierKeymap
*>(modmap
));
232 gccache
= (BGCCache
*) 0;
236 BaseDisplay::~BaseDisplay(void) {
239 XCloseDisplay(display
);
243 void BaseDisplay::eventLoop(void) {
246 const int xfd
= ConnectionNumber(display
);
248 while (run_state
== RUNNING
&& ! internal_error
) {
249 if (XPending(display
)) {
251 XNextEvent(display
, &e
);
255 timeval now
, tm
, *timeout
= (timeval
*) 0;
260 if (! timerList
.empty()) {
261 const BTimer
* const timer
= timerList
.top();
263 gettimeofday(&now
, 0);
264 tm
= timer
->timeRemaining(now
);
269 select(xfd
+ 1, &rfds
, 0, 0, timeout
);
271 // check for timer timeout
272 gettimeofday(&now
, 0);
274 // there is a small chance for deadlock here:
275 // *IF* the timer list keeps getting refreshed *AND* the time between
276 // timer->start() and timer->shouldFire() is within the timer's period
277 // then the timer will keep firing. This should be VERY near impossible.
278 while (! timerList
.empty()) {
279 BTimer
*timer
= timerList
.top();
280 if (! timer
->shouldFire(now
))
285 timer
->fireTimeout();
287 if (timer
->isRecurring())
295 void BaseDisplay::addTimer(BTimer
*timer
) {
298 timerList
.push(timer
);
302 void BaseDisplay::removeTimer(BTimer
*timer
) {
303 timerList
.release(timer
);
308 * Grabs a button, but also grabs the button in every possible combination
309 * with the keyboard lock keys, so that they do not cancel out the event.
311 * if allow_scroll_lock is true then only the top half of the lock mask
312 * table is used and scroll lock is ignored. This value defaults to false.
314 void BaseDisplay::grabButton(unsigned int button
, unsigned int modifiers
,
315 Window grab_window
, bool owner_events
,
316 unsigned int event_mask
, int pointer_mode
,
317 int keyboard_mode
, Window confine_to
,
318 Cursor cursor
, bool allow_scroll_lock
) const {
319 unsigned int length
= (allow_scroll_lock
) ? MaskListLength
/ 2:
321 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
322 XGrabButton(display
, button
, modifiers
| MaskList
[cnt
], grab_window
,
323 owner_events
, event_mask
, pointer_mode
, keyboard_mode
,
329 * Releases the grab on a button, and ungrabs all possible combinations of the
330 * keyboard lock keys.
332 void BaseDisplay::ungrabButton(unsigned int button
, unsigned int modifiers
,
333 Window grab_window
) const {
334 for (size_t cnt
= 0; cnt
< MaskListLength
; ++cnt
)
335 XUngrabButton(display
, button
, modifiers
| MaskList
[cnt
], grab_window
);
339 const ScreenInfo
* BaseDisplay::getScreenInfo(unsigned int s
) const {
340 if (s
< screenInfoList
.size())
341 return &screenInfoList
[s
];
342 return (const ScreenInfo
*) 0;
346 BGCCache
* BaseDisplay::gcCache(void) const {
348 gccache
= new BGCCache(this, screenInfoList
.size());
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