]>
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"
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)
93 if (!(_display
= XOpenDisplay(NULL
))) {
94 printf(_("Unable to open connection to the X server. Please set the \n\
95 DISPLAY environment variable approriately.\n\n"));
98 if (fcntl(ConnectionNumber(_display
), F_SETFD
, 1) == -1) {
99 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
102 if (!XSupportsLocale())
103 printf(_("X server does not support locale.\n"));
104 if (!XSetLocaleModifiers(""))
105 printf(_("Cannot set locale modifiers for the X server.\n"));
107 // set our error handler for X errors
108 XSetErrorHandler(xerrorHandler
);
110 // set the DISPLAY environment variable for any lauched children, to the
111 // display we're using, so they open in the right place.
112 putenv(std::string("DISPLAY=") + DisplayString(_display
));
114 // find the availability of X extensions we like to use
116 _xkb
= XkbQueryExtension(_display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
121 _shape
= XShapeQueryExtension(_display
, &_shape_event_basep
, &junk
);
125 _xinerama
= XineramaQueryExtension(_display
, &_xinerama_event_basep
, &junk
);
128 // get lock masks that are defined by the display (not constant)
129 XModifierKeymap
*modmap
;
131 modmap
= XGetModifierMapping(_display
);
132 if (modmap
&& modmap
->max_keypermod
> 0) {
133 const int mask_table
[] = {
134 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
135 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
137 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
138 modmap
->max_keypermod
;
139 // get the values of the keyboard lock modifiers
140 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
141 // since it doesn't need to be.
142 const KeyCode num_lock
= XKeysymToKeycode(_display
, XK_Num_Lock
);
143 const KeyCode scroll_lock
= XKeysymToKeycode(_display
, XK_Scroll_Lock
);
145 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
146 if (! modmap
->modifiermap
[cnt
]) continue;
148 if (num_lock
== modmap
->modifiermap
[cnt
])
149 _num_lock_mask
= mask_table
[cnt
/ modmap
->max_keypermod
];
150 if (scroll_lock
== modmap
->modifiermap
[cnt
])
151 _scroll_lock_mask
= mask_table
[cnt
/ modmap
->max_keypermod
];
155 if (modmap
) XFreeModifiermap(modmap
);
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.
167 _screenInfoList
.reserve(ScreenCount(_display
));
168 for (int i
= 0; i
< ScreenCount(_display
); ++i
)
169 _screenInfoList
.push_back(ScreenInfo(i
));
171 _gccache
= new GCCache(_screenInfoList
.size());
178 while (_grab_count
> 0)
180 XCloseDisplay(_display
);
184 const ScreenInfo
* Display::screenInfo(int snum
)
187 assert(snum
< static_cast<int>(_screenInfoList
.size()));
188 return &_screenInfoList
[snum
];
192 const ScreenInfo
* Display::findScreen(Window root
)
194 ScreenInfoList::iterator it
, end
= _screenInfoList
.end();
195 for (it
= _screenInfoList
.begin(); it
!= end
; ++it
)
196 if (it
->rootWindow() == root
)
204 if (_grab_count
== 0)
205 XGrabServer(_display
);
210 void Display::ungrab()
212 if (_grab_count
== 0) return;
214 if (_grab_count
== 0)
215 XUngrabServer(_display
);
225 * Grabs a button, but also grabs the button in every possible combination
226 * with the keyboard lock keys, so that they do not cancel out the event.
228 * if allow_scroll_lock is true then only the top half of the lock mask
229 * table is used and scroll lock is ignored. This value defaults to false.
231 void Display::grabButton(unsigned int button
, unsigned int modifiers
,
232 Window grab_window
, bool owner_events
,
233 unsigned int event_mask
, int pointer_mode
,
234 int keyboard_mode
, Window confine_to
,
235 Cursor cursor
, bool allow_scroll_lock
) const
237 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
239 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
240 XGrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
241 grab_window
, owner_events
, event_mask
, pointer_mode
,
242 keyboard_mode
, confine_to
, cursor
);
247 * Releases the grab on a button, and ungrabs all possible combinations of the
248 * keyboard lock keys.
250 void Display::ungrabButton(unsigned int button
, unsigned int modifiers
,
251 Window grab_window
) const
253 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
254 XUngrabButton(_display
, button
, modifiers
| _mask_list
[cnt
],
258 void Display::grabKey(unsigned int keycode
, unsigned int modifiers
,
259 Window grab_window
, bool owner_events
,
260 int pointer_mode
, int keyboard_mode
,
261 bool allow_scroll_lock
) const
263 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
265 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
266 XGrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
267 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
270 void Display::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
271 Window grab_window
) const
273 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
274 XUngrabKey(_display
, keycode
, modifiers
| _mask_list
[cnt
],
This page took 0.047423 seconds and 4 git commands to generate.