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Dogcows Code - chaz/openbox/blob - display.cc
0f76a1cdbe667fed8a41dc3c9576e329c0a75ada
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
*) 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 _gccache((GCCache
*) 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 XModifierKeymap
*modmap
;
133 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
];
157 if (modmap
) XFreeModifiermap(modmap
);
160 _mask_list
[1] = LockMask
;
161 _mask_list
[2] = _num_lock_mask
;
162 _mask_list
[3] = LockMask
| _num_lock_mask
;
163 _mask_list
[4] = _scroll_lock_mask
;
164 _mask_list
[5] = _scroll_lock_mask
| LockMask
;
165 _mask_list
[6] = _scroll_lock_mask
| _num_lock_mask
;
166 _mask_list
[7] = _scroll_lock_mask
| LockMask
| _num_lock_mask
;
168 // Get information on all the screens which are available.
169 _screenInfoList
.reserve(ScreenCount(_display
));
170 for (int i
= 0; i
< ScreenCount(_display
); ++i
)
171 _screenInfoList
.push_back(ScreenInfo(i
));
173 _gccache
= new GCCache(_screenInfoList
.size());
180 while (_grab_count
> 0)
182 XCloseDisplay(_display
);
186 const ScreenInfo
* Display::screenInfo(int snum
)
189 assert(snum
< static_cast<int>(_screenInfoList
.size()));
190 return &_screenInfoList
[snum
];
194 const ScreenInfo
* Display::findScreen(Window root
)
196 ScreenInfoList::iterator it
, end
= _screenInfoList
.end();
197 for (it
= _screenInfoList
.begin(); it
!= end
; ++it
)
198 if (it
->rootWindow() == root
)
206 if (_grab_count
== 0)
207 XGrabServer(_display
);
212 void Display::ungrab()
214 if (_grab_count
== 0) return;
216 if (_grab_count
== 0)
217 XUngrabServer(_display
);
227 * Grabs a button, but also grabs the button in every possible combination
228 * with the keyboard lock keys, so that they do not cancel out the event.
230 * if allow_scroll_lock is true then only the top half of the lock mask
231 * table is used and scroll lock is ignored. This value defaults to false.
233 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
234 Window grab_window
, bool owner_events
,
235 unsigned int event_mask
, int pointer_mode
,
236 int keyboard_mode
, Window confine_to
,
237 Cursor cursor
, bool allow_scroll_lock
) const
239 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
241 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
242 XGrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
243 grab_window
, owner_events
, event_mask
, pointer_mode
,
244 keyboard_mode
, confine_to
, cursor
);
249 * Releases the grab on a button, and ungrabs all possible combinations of the
250 * keyboard lock keys.
252 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
253 Window grab_window
) const
255 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
256 XUngrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
260 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
261 Window grab_window
, bool owner_events
,
262 int pointer_mode
, int keyboard_mode
,
263 bool allow_scroll_lock
) const
265 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
267 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
268 XGrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
269 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
272 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
273 Window grab_window
) const
275 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
276 XUngrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
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