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Dogcows Code - chaz/openbox/blob - otk/display.cc
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
8 #include "screeninfo.hh"
9 #include "rendercontrol.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
44 #include "../src/gettext.h"
45 #define _(str) gettext(str)
51 Display
*display
= (Display
*) 0;
53 static int xerrorHandler(::Display
*d
, XErrorEvent
*e
)
55 if (!display
->ignoreErrors()) {
59 //if (e->error_code != BadWindow)
61 XGetErrorText(d
, e
->error_code
, errtxt
, 127);
62 printf("X Error: %s\n", errtxt
);
63 if (e
->error_code
!= BadWindow
)
80 _shape_event_basep(0),
82 _xinerama_event_basep(0),
88 _rendercontrol_list(0)
96 if (!(_display
= XOpenDisplay(NULL
))) {
97 printf(_("Unable to open connection to the X server. Please set the \n\
98 DISPLAY environment variable approriately.\n\n"));
101 if (fcntl(ConnectionNumber(_display
), F_SETFD
, 1) == -1) {
102 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
105 if (!XSupportsLocale())
106 printf(_("X server does not support locale.\n"));
107 if (!XSetLocaleModifiers(""))
108 printf(_("Cannot set locale modifiers for the X server.\n"));
110 // set our error handler for X errors
111 XSetErrorHandler(xerrorHandler
);
113 // set the DISPLAY environment variable for any lauched children, to the
114 // display we're using, so they open in the right place.
115 putenv(std::string("DISPLAY=") + DisplayString(_display
));
117 // find the availability of X extensions we like to use
119 _xkb
= XkbQueryExtension(_display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
124 _shape
= XShapeQueryExtension(_display
, &_shape_event_basep
, &junk
);
128 _xinerama
= XineramaQueryExtension(_display
, &_xinerama_event_basep
, &junk
);
131 // get lock masks that are defined by the display (not constant)
132 _modmap
= XGetModifierMapping(_display
);
134 if (_modmap
&& _modmap
->max_keypermod
> 0) {
135 const int mask_table
[] = {
136 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
137 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
139 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
140 _modmap
->max_keypermod
;
141 // get the values of the keyboard lock modifiers
142 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
143 // since it doesn't need to be.
144 const KeyCode num_lock
= XKeysymToKeycode(_display
, XK_Num_Lock
);
145 const KeyCode scroll_lock
= XKeysymToKeycode(_display
, XK_Scroll_Lock
);
147 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
148 if (! _modmap
->modifiermap
[cnt
]) continue;
150 if (num_lock
== _modmap
->modifiermap
[cnt
])
151 _num_lock_mask
= mask_table
[cnt
/ _modmap
->max_keypermod
];
152 if (scroll_lock
== _modmap
->modifiermap
[cnt
])
153 _scroll_lock_mask
= mask_table
[cnt
/ _modmap
->max_keypermod
];
158 _mask_list
[1] = LockMask
;
159 _mask_list
[2] = _num_lock_mask
;
160 _mask_list
[3] = LockMask
| _num_lock_mask
;
161 _mask_list
[4] = _scroll_lock_mask
;
162 _mask_list
[5] = _scroll_lock_mask
| LockMask
;
163 _mask_list
[6] = _scroll_lock_mask
| _num_lock_mask
;
164 _mask_list
[7] = _scroll_lock_mask
| LockMask
| _num_lock_mask
;
166 // Get information on all the screens which are available, and create their
168 _screeninfo_list
= new ScreenInfo
*[ScreenCount(_display
)];
169 _rendercontrol_list
= new RenderControl
*[ScreenCount(_display
)];
170 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
171 _screeninfo_list
[i
] = new ScreenInfo(i
);
172 _rendercontrol_list
[i
] = RenderControl::getRenderControl(i
);
179 while (_grab_count
> 0)
182 XFreeModifiermap(_modmap
);
184 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
185 delete _rendercontrol_list
[i
];
186 delete _screeninfo_list
[i
];
188 delete [] _rendercontrol_list
;
189 delete [] _screeninfo_list
;
191 XCloseDisplay(_display
);
195 const ScreenInfo
* Display::screenInfo(int snum
) const
198 assert(snum
< (signed) ScreenCount(_display
));
199 return _screeninfo_list
[snum
];
203 const ScreenInfo
* Display::findScreen(Window root
) const
205 for (int i
= 0; i
< ScreenCount(_display
); ++i
)
206 if (_screeninfo_list
[i
]->rootWindow() == root
)
207 return _screeninfo_list
[i
];
212 const RenderControl
*Display::renderControl(int snum
) const
215 assert(snum
< (signed) ScreenCount(_display
));
216 return _rendercontrol_list
[snum
];
220 void Display::setIgnoreErrors(bool t
)
223 // sync up so that anything already sent is/isn't ignored!
224 XSync(_display
, false);
229 if (_grab_count
== 0) {
230 XGrabServer(_display
);
231 XSync(_display
, false); // make sure it kicks in
237 void Display::ungrab()
239 if (_grab_count
== 0) return;
241 if (_grab_count
== 0) {
242 XUngrabServer(_display
);
243 XFlush(_display
); // ungrab as soon as possible
254 * Grabs a button, but also grabs the button in every possible combination
255 * with the keyboard lock keys, so that they do not cancel out the event.
257 * if allow_scroll_lock is true then only the top half of the lock mask
258 * table is used and scroll lock is ignored. This value defaults to false.
260 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
261 Window grab_window
, bool owner_events
,
262 unsigned int event_mask
, int pointer_mode
,
263 int keyboard_mode
, Window confine_to
,
264 Cursor cursor
, bool allow_scroll_lock
) const
266 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
268 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
269 XGrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
270 grab_window
, owner_events
, event_mask
, pointer_mode
,
271 keyboard_mode
, confine_to
, cursor
);
276 * Releases the grab on a button, and ungrabs all possible combinations of the
277 * keyboard lock keys.
279 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
280 Window grab_window
) const
282 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
283 XUngrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
287 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
288 Window grab_window
, bool owner_events
,
289 int pointer_mode
, int keyboard_mode
,
290 bool allow_scroll_lock
) const
292 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
294 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
295 XGrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
296 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
299 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
300 Window grab_window
) const
302 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
303 XUngrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
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