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Dogcows Code - chaz/openbox/blob - display.cc
97e77de1830c92f9370d03eb7b709d253d1b485a
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
8 #include "screeninfo.hh"
13 #include <X11/keysym.h>
16 #include <X11/XKBlib.h>
20 #include <X11/extensions/shape.h>
24 #include <X11/extensions/Xinerama.h>
29 #endif // HAVE_STDIO_H
33 #endif // HAVE_SIGNAL_H
37 #endif // HAVE_FCNTL_H
40 # include <sys/types.h>
42 #endif // HAVE_UNISTD_H
45 #define _(str) gettext(str)
51 ::Display
*Display::display
= (::Display
*) 0;
52 bool Display::_xkb
= false;
53 int Display::_xkb_event_basep
= 0;
54 bool Display::_shape
= false;
55 int Display::_shape_event_basep
= 0;
56 bool Display::_xinerama
= false;
57 int Display::_xinerama_event_basep
= 0;
58 unsigned int Display::_mask_list
[8];
59 unsigned int Display::_scrollLockMask
= 0;
60 unsigned int Display::_numLockMask
= 0;
61 Display::ScreenInfoList
Display::_screenInfoList
;
62 GCCache
*Display::_gccache
= (GCCache
*) 0;
63 int Display::_grab_count
= 0;
66 static int xerrorHandler(::Display
*d
, XErrorEvent
*e
)
71 //if (e->error_code != BadWindow)
73 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
74 printf("X Error: %s\n", errtxt
);
75 if (e
->error_code
!= BadWindow
)
87 void Display::initialize(char *name
)
93 if (!(display
= XOpenDisplay(name
))) {
94 printf(_("Unable to open connection to the X server. Please set the \n\
95 DISPLAY environment variable approriately, or use the '-display' command \n\
96 line argument.\n\n"));
99 if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
100 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
104 // set our error handler for X errors
105 XSetErrorHandler(xerrorHandler
);
107 // set the DISPLAY environment variable for any lauched children, to the
108 // display we're using, so they open in the right place.
109 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
110 putenv(std::string("DISPLAY=") + DisplayString(display
));
112 // find the availability of X extensions we like to use
114 _xkb
= XkbQueryExtension(display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
119 _shape
= XShapeQueryExtension(display
, &_shape_event_basep
, &junk
);
123 _xinerama
= XineramaQueryExtension(display
, &_xinerama_event_basep
, &junk
);
126 // get lock masks that are defined by the display (not constant)
127 XModifierKeymap
*modmap
;
129 modmap
= XGetModifierMapping(display
);
130 if (modmap
&& modmap
->max_keypermod
> 0) {
131 const int mask_table
[] = {
132 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
133 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
135 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
136 modmap
->max_keypermod
;
137 // get the values of the keyboard lock modifiers
138 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
139 // since it doesn't need to be.
140 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
141 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
143 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
144 if (! modmap
->modifiermap
[cnt
]) continue;
146 if (num_lock
== modmap
->modifiermap
[cnt
])
147 _numLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
148 if (scroll_lock
== modmap
->modifiermap
[cnt
])
149 _scrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
153 if (modmap
) XFreeModifiermap(modmap
);
156 _mask_list
[1] = LockMask
;
157 _mask_list
[2] = _numLockMask
;
158 _mask_list
[3] = LockMask
| _numLockMask
;
159 _mask_list
[4] = _scrollLockMask
;
160 _mask_list
[5] = _scrollLockMask
| LockMask
;
161 _mask_list
[6] = _scrollLockMask
| _numLockMask
;
162 _mask_list
[7] = _scrollLockMask
| LockMask
| _numLockMask
;
164 // Get information on all the screens which are available.
165 _screenInfoList
.reserve(ScreenCount(display
));
166 for (int i
= 0; i
< ScreenCount(display
); ++i
)
167 _screenInfoList
.push_back(ScreenInfo(i
));
169 _gccache
= new GCCache(_screenInfoList
.size());
173 void Display::destroy()
176 while (_grab_count
> 0)
178 XCloseDisplay(display
);
182 const ScreenInfo
* Display::screenInfo(int snum
) {
184 assert(snum
< static_cast<int>(_screenInfoList
.size()));
185 return &_screenInfoList
[snum
];
189 const ScreenInfo
* Display::findScreen(Window root
)
191 ScreenInfoList::iterator it
, end
= _screenInfoList
.end();
192 for (it
= _screenInfoList
.begin(); it
!= end
; ++it
)
193 if (it
->rootWindow() == root
)
201 if (_grab_count
== 0)
202 XGrabServer(display
);
207 void Display::ungrab()
209 if (_grab_count
== 0) return;
211 if (_grab_count
== 0)
212 XUngrabServer(display
);
222 * Grabs a button, but also grabs the button in every possible combination
223 * with the keyboard lock keys, so that they do not cancel out the event.
225 * if allow_scroll_lock is true then only the top half of the lock mask
226 * table is used and scroll lock is ignored. This value defaults to false.
228 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
229 Window grab_window
, bool owner_events
,
230 unsigned int event_mask
, int pointer_mode
,
231 int keyboard_mode
, Window confine_to
,
232 Cursor cursor
, bool allow_scroll_lock
) {
233 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
235 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
236 XGrabButton(Display::display
, button
, modifiers
| _mask_list
[cnt
],
237 grab_window
, owner_events
, event_mask
, pointer_mode
,
238 keyboard_mode
, confine_to
, cursor
);
243 * Releases the grab on a button, and ungrabs all possible combinations of the
244 * keyboard lock keys.
246 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
247 Window grab_window
) {
248 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
249 XUngrabButton(Display::display
, button
, modifiers
| _mask_list
[cnt
],
253 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
254 Window grab_window
, bool owner_events
,
255 int pointer_mode
, int keyboard_mode
,
256 bool allow_scroll_lock
)
258 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
260 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
261 XGrabKey(Display::display
, keycode
, modifiers
| _mask_list
[cnt
],
262 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
265 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
268 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
269 XUngrabKey(Display::display
, keycode
, modifiers
| _mask_list
[cnt
],
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