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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"
10 #include "rendercontrol.hh"
14 #include <X11/keysym.h>
17 #include <X11/XKBlib.h>
21 #include <X11/extensions/shape.h>
25 #include <X11/extensions/Xinerama.h>
30 #endif // HAVE_STDIO_H
34 #endif // HAVE_SIGNAL_H
38 #endif // HAVE_FCNTL_H
41 # include <sys/types.h>
43 #endif // HAVE_UNISTD_H
46 #define _(str) gettext(str)
52 Display
*display
= (Display
*) 0;
54 static int xerrorHandler(::Display
*d
, XErrorEvent
*e
)
59 //if (e->error_code != BadWindow)
61 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
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),
89 _gccache((GCCache
*) 0)
97 if (!(_display
= XOpenDisplay(NULL
))) {
98 printf(_("Unable to open connection to the X server. Please set the \n\
99 DISPLAY environment variable approriately.\n\n"));
102 if (fcntl(ConnectionNumber(_display
), F_SETFD
, 1) == -1) {
103 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
106 if (!XSupportsLocale())
107 printf(_("X server does not support locale.\n"));
108 if (!XSetLocaleModifiers(""))
109 printf(_("Cannot set locale modifiers for the X server.\n"));
111 // set our error handler for X errors
112 XSetErrorHandler(xerrorHandler
);
114 // set the DISPLAY environment variable for any lauched children, to the
115 // display we're using, so they open in the right place.
116 putenv(std::string("DISPLAY=") + DisplayString(_display
));
118 // find the availability of X extensions we like to use
120 _xkb
= XkbQueryExtension(_display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
125 _shape
= XShapeQueryExtension(_display
, &_shape_event_basep
, &junk
);
129 _xinerama
= XineramaQueryExtension(_display
, &_xinerama_event_basep
, &junk
);
132 // get lock masks that are defined by the display (not constant)
133 XModifierKeymap
*modmap
;
135 modmap
= XGetModifierMapping(_display
);
136 if (modmap
&& modmap
->max_keypermod
> 0) {
137 const int mask_table
[] = {
138 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
139 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
141 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
142 modmap
->max_keypermod
;
143 // get the values of the keyboard lock modifiers
144 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
145 // since it doesn't need to be.
146 const KeyCode num_lock
= XKeysymToKeycode(_display
, XK_Num_Lock
);
147 const KeyCode scroll_lock
= XKeysymToKeycode(_display
, XK_Scroll_Lock
);
149 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
150 if (! modmap
->modifiermap
[cnt
]) continue;
152 if (num_lock
== modmap
->modifiermap
[cnt
])
153 _num_lock_mask
= mask_table
[cnt
/ modmap
->max_keypermod
];
154 if (scroll_lock
== modmap
->modifiermap
[cnt
])
155 _scroll_lock_mask
= mask_table
[cnt
/ modmap
->max_keypermod
];
159 if (modmap
) XFreeModifiermap(modmap
);
162 _mask_list
[1] = LockMask
;
163 _mask_list
[2] = _num_lock_mask
;
164 _mask_list
[3] = LockMask
| _num_lock_mask
;
165 _mask_list
[4] = _scroll_lock_mask
;
166 _mask_list
[5] = _scroll_lock_mask
| LockMask
;
167 _mask_list
[6] = _scroll_lock_mask
| _num_lock_mask
;
168 _mask_list
[7] = _scroll_lock_mask
| LockMask
| _num_lock_mask
;
170 // Get information on all the screens which are available, and create their
172 _screeninfo_list
= new ScreenInfo
*[ScreenCount(_display
)];
173 _rendercontrol_list
= new RenderControl
*[ScreenCount(_display
)];
174 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
175 _screeninfo_list
[i
] = new ScreenInfo(i
);
176 _rendercontrol_list
[i
] = RenderControl::getRenderControl(i
);
179 _gccache
= new GCCache(ScreenCount(_display
));
186 while (_grab_count
> 0)
189 for (int i
= 0; i
< ScreenCount(_display
); ++i
) {
190 delete _rendercontrol_list
[i
];
191 delete _screeninfo_list
[i
];
193 delete [] _rendercontrol_list
;
194 delete [] _screeninfo_list
;
196 XCloseDisplay(_display
);
200 const ScreenInfo
* Display::screenInfo(int snum
) const
203 assert(snum
< (signed) ScreenCount(_display
));
204 return _screeninfo_list
[snum
];
208 const ScreenInfo
* Display::findScreen(Window root
) const
210 for (int i
= 0; i
< ScreenCount(_display
); ++i
)
211 if (_screeninfo_list
[i
]->rootWindow() == root
)
212 return _screeninfo_list
[i
];
217 const RenderControl
*Display::renderControl(int snum
) const
220 assert(snum
< (signed) ScreenCount(_display
));
221 return _rendercontrol_list
[snum
];
227 if (_grab_count
== 0)
228 XGrabServer(_display
);
233 void Display::ungrab()
235 if (_grab_count
== 0) return;
237 if (_grab_count
== 0)
238 XUngrabServer(_display
);
248 * Grabs a button, but also grabs the button in every possible combination
249 * with the keyboard lock keys, so that they do not cancel out the event.
251 * if allow_scroll_lock is true then only the top half of the lock mask
252 * table is used and scroll lock is ignored. This value defaults to false.
254 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
255 Window grab_window
, bool owner_events
,
256 unsigned int event_mask
, int pointer_mode
,
257 int keyboard_mode
, Window confine_to
,
258 Cursor cursor
, bool allow_scroll_lock
) const
260 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
262 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
263 XGrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
264 grab_window
, owner_events
, event_mask
, pointer_mode
,
265 keyboard_mode
, confine_to
, cursor
);
270 * Releases the grab on a button, and ungrabs all possible combinations of the
271 * keyboard lock keys.
273 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
274 Window grab_window
) const
276 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
277 XUngrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
281 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
282 Window grab_window
, bool owner_events
,
283 int pointer_mode
, int keyboard_mode
,
284 bool allow_scroll_lock
) const
286 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
288 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
289 XGrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
290 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
293 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
294 Window grab_window
) const
296 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
297 XUngrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
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