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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
45 #define _(str) gettext(str)
51 Display
*display
= (Display
*) 0;
53 static int xerrorHandler(::Display
*d
, XErrorEvent
*e
)
58 //if (e->error_code != BadWindow)
60 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
61 printf("X Error: %s\n", errtxt
);
62 if (e
->error_code
!= BadWindow
)
79 _shape_event_basep(0),
81 _xinerama_event_basep(0),
87 _rendercontrol_list(0)
95 if (!(_display
= XOpenDisplay(NULL
))) {
96 printf(_("Unable to open connection to the X server. Please set the \n\
97 DISPLAY environment variable approriately.\n\n"));
100 if (fcntl(ConnectionNumber(_display
), F_SETFD
, 1) == -1) {
101 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
104 if (!XSupportsLocale())
105 printf(_("X server does not support locale.\n"));
106 if (!XSetLocaleModifiers(""))
107 printf(_("Cannot set locale modifiers for the X server.\n"));
109 // set our error handler for X errors
110 XSetErrorHandler(xerrorHandler
);
112 // set the DISPLAY environment variable for any lauched children, to the
113 // display we're using, so they open in the right place.
114 putenv(std::string("DISPLAY=") + DisplayString(_display
));
116 // find the availability of X extensions we like to use
118 _xkb
= XkbQueryExtension(_display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
123 _shape
= XShapeQueryExtension(_display
, &_shape_event_basep
, &junk
);
127 _xinerama
= XineramaQueryExtension(_display
, &_xinerama_event_basep
, &junk
);
130 // get lock masks that are defined by the display (not constant)
131 _modmap
= XGetModifierMapping(_display
);
133 if (_modmap
&& _modmap
->max_keypermod
> 0) {
134 const int mask_table
[] = {
135 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
136 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
138 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
139 _modmap
->max_keypermod
;
140 // get the values of the keyboard lock modifiers
141 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
142 // since it doesn't need to be.
143 const KeyCode num_lock
= XKeysymToKeycode(_display
, XK_Num_Lock
);
144 const KeyCode scroll_lock
= XKeysymToKeycode(_display
, XK_Scroll_Lock
);
146 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
147 if (! _modmap
->modifiermap
[cnt
]) continue;
149 if (num_lock
== _modmap
->modifiermap
[cnt
])
150 _num_lock_mask
= mask_table
[cnt
/ _modmap
->max_keypermod
];
151 if (scroll_lock
== _modmap
->modifiermap
[cnt
])
152 _scroll_lock_mask
= mask_table
[cnt
/ _modmap
->max_keypermod
];
157 _mask_list
[1] = LockMask
;
158 _mask_list
[2] = _num_lock_mask
;
159 _mask_list
[3] = LockMask
| _num_lock_mask
;
160 _mask_list
[4] = _scroll_lock_mask
;
161 _mask_list
[5] = _scroll_lock_mask
| LockMask
;
162 _mask_list
[6] = _scroll_lock_mask
| _num_lock_mask
;
163 _mask_list
[7] = _scroll_lock_mask
| LockMask
| _num_lock_mask
;
165 // Get information on all the screens which are available, and create their
167 _screeninfo_list
= new ScreenInfo
*[ScreenCount(_display
)];
168 _rendercontrol_list
= new RenderControl
*[ScreenCount(_display
)];
169 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
170 _screeninfo_list
[i
] = new ScreenInfo(i
);
171 _rendercontrol_list
[i
] = RenderControl::getRenderControl(i
);
178 while (_grab_count
> 0)
181 XFreeModifiermap(_modmap
);
183 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
184 delete _rendercontrol_list
[i
];
185 delete _screeninfo_list
[i
];
187 delete [] _rendercontrol_list
;
188 delete [] _screeninfo_list
;
190 XCloseDisplay(_display
);
194 const ScreenInfo
* Display::screenInfo(int snum
) const
197 assert(snum
< (signed) ScreenCount(_display
));
198 return _screeninfo_list
[snum
];
202 const ScreenInfo
* Display::findScreen(Window root
) const
204 for (int i
= 0; i
< ScreenCount(_display
); ++i
)
205 if (_screeninfo_list
[i
]->rootWindow() == root
)
206 return _screeninfo_list
[i
];
211 const RenderControl
*Display::renderControl(int snum
) const
214 assert(snum
< (signed) ScreenCount(_display
));
215 return _rendercontrol_list
[snum
];
221 if (_grab_count
== 0)
222 XGrabServer(_display
);
227 void Display::ungrab()
229 if (_grab_count
== 0) return;
231 if (_grab_count
== 0)
232 XUngrabServer(_display
);
242 * Grabs a button, but also grabs the button in every possible combination
243 * with the keyboard lock keys, so that they do not cancel out the event.
245 * if allow_scroll_lock is true then only the top half of the lock mask
246 * table is used and scroll lock is ignored. This value defaults to false.
248 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
249 Window grab_window
, bool owner_events
,
250 unsigned int event_mask
, int pointer_mode
,
251 int keyboard_mode
, Window confine_to
,
252 Cursor cursor
, bool allow_scroll_lock
) const
254 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
256 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
257 XGrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
258 grab_window
, owner_events
, event_mask
, pointer_mode
,
259 keyboard_mode
, confine_to
, cursor
);
264 * Releases the grab on a button, and ungrabs all possible combinations of the
265 * keyboard lock keys.
267 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
268 Window grab_window
) const
270 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
271 XUngrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
275 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
276 Window grab_window
, bool owner_events
,
277 int pointer_mode
, int keyboard_mode
,
278 bool allow_scroll_lock
) const
280 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
282 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
283 XGrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
284 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
287 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
288 Window grab_window
) const
290 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
291 XUngrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
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