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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"
12 #include <X11/keysym.h>
15 #include <X11/XKBlib.h>
19 #include <X11/extensions/shape.h>
23 #include <X11/extensions/Xinerama.h>
28 #endif // HAVE_STDIO_H
32 #endif // HAVE_STDLIB_H
36 #endif // HAVE_SIGNAL_H
40 #endif // HAVE_FCNTL_H
43 # include <sys/types.h>
45 #endif // HAVE_UNISTD_H
48 #define _(str) gettext(str)
54 Display
*OBDisplay::display
= (Display
*) 0;
55 bool OBDisplay::_xkb
= false;
56 int OBDisplay::_xkb_event_basep
= 0;
57 bool OBDisplay::_shape
= false;
58 int OBDisplay::_shape_event_basep
= 0;
59 bool OBDisplay::_xinerama
= false;
60 int OBDisplay::_xinerama_event_basep
= 0;
61 unsigned int OBDisplay::_mask_list
[8];
62 unsigned int OBDisplay::_scrollLockMask
= 0;
63 unsigned int OBDisplay::_numLockMask
= 0;
64 OBDisplay::ScreenInfoList
OBDisplay::_screenInfoList
;
65 BGCCache
*OBDisplay::_gccache
= (BGCCache
*) 0;
66 int OBDisplay::_grab_count
= 0;
69 int OBDisplay::xerrorHandler(Display
*d
, XErrorEvent
*e
)
74 //if (e->error_code != BadWindow)
76 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
77 printf("X Error: %s\n", errtxt
);
78 if (e
->error_code
!= BadWindow
)
90 void OBDisplay::initialize(char *name
)
96 printf("getenv(DISPLAY)=%s\n", getenv("DISPLAY"));
97 if (!(display
= XOpenDisplay(name
))) {
98 printf(_("Unable to open connection to the X server. Please set the \n\
99 DISPLAY environment variable approriately, or use the '-display' command \n\
100 line argument.\n\n"));
103 if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
104 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
108 // set our error handler for X errors
109 XSetErrorHandler(xerrorHandler
);
111 // set the DISPLAY environment variable for any lauched children, to the
112 // display we're using, so they open in the right place.
113 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
114 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
115 DisplayString(display
)).c_str()))) {
116 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
120 // find the availability of X extensions we like to use
122 _xkb
= XkbQueryExtension(display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
127 _shape
= XShapeQueryExtension(display
, &_shape_event_basep
, &junk
);
131 _xinerama
= XineramaQueryExtension(display
, &_xinerama_event_basep
, &junk
);
134 // get lock masks that are defined by the display (not constant)
135 XModifierKeymap
*modmap
;
137 modmap
= XGetModifierMapping(display
);
138 if (modmap
&& modmap
->max_keypermod
> 0) {
139 const int mask_table
[] = {
140 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
141 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
143 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
144 modmap
->max_keypermod
;
145 // get the values of the keyboard lock modifiers
146 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
147 // since it doesn't need to be.
148 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
149 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
151 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
152 if (! modmap
->modifiermap
[cnt
]) continue;
154 if (num_lock
== modmap
->modifiermap
[cnt
])
155 _numLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
156 if (scroll_lock
== modmap
->modifiermap
[cnt
])
157 _scrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
161 if (modmap
) XFreeModifiermap(modmap
);
164 _mask_list
[1] = LockMask
;
165 _mask_list
[2] = _numLockMask
;
166 _mask_list
[3] = LockMask
| _numLockMask
;
167 _mask_list
[4] = _scrollLockMask
;
168 _mask_list
[5] = _scrollLockMask
| LockMask
;
169 _mask_list
[6] = _scrollLockMask
| _numLockMask
;
170 _mask_list
[7] = _scrollLockMask
| LockMask
| _numLockMask
;
172 // Get information on all the screens which are available.
173 _screenInfoList
.reserve(ScreenCount(display
));
174 for (int i
= 0; i
< ScreenCount(display
); ++i
)
175 _screenInfoList
.push_back(ScreenInfo(i
));
177 _gccache
= new BGCCache(_screenInfoList
.size());
181 void OBDisplay::destroy()
184 while (_grab_count
> 0)
186 XCloseDisplay(display
);
190 const ScreenInfo
* OBDisplay::screenInfo(int snum
) {
192 assert(snum
< static_cast<int>(_screenInfoList
.size()));
193 return &_screenInfoList
[snum
];
197 const ScreenInfo
* OBDisplay::findScreen(Window root
)
199 ScreenInfoList::iterator it
, end
= _screenInfoList
.end();
200 for (it
= _screenInfoList
.begin(); it
!= end
; ++it
)
201 if (it
->rootWindow() == root
)
207 void OBDisplay::grab()
209 if (_grab_count
== 0)
210 XGrabServer(display
);
215 void OBDisplay::ungrab()
217 if (_grab_count
== 0) return;
219 if (_grab_count
== 0)
220 XUngrabServer(display
);
230 * Grabs a button, but also grabs the button in every possible combination
231 * with the keyboard lock keys, so that they do not cancel out the event.
233 * if allow_scroll_lock is true then only the top half of the lock mask
234 * table is used and scroll lock is ignored. This value defaults to false.
236 void OBDisplay::grabButton(unsigned int button
, unsigned int modifiers
,
237 Window grab_window
, bool owner_events
,
238 unsigned int event_mask
, int pointer_mode
,
239 int keyboard_mode
, Window confine_to
,
240 Cursor cursor
, bool allow_scroll_lock
) {
241 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
243 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
244 XGrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
245 grab_window
, owner_events
, event_mask
, pointer_mode
,
246 keyboard_mode
, confine_to
, cursor
);
251 * Releases the grab on a button, and ungrabs all possible combinations of the
252 * keyboard lock keys.
254 void OBDisplay::ungrabButton(unsigned int button
, unsigned int modifiers
,
255 Window grab_window
) {
256 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
257 XUngrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
261 void OBDisplay::grabKey(unsigned int keycode
, unsigned int modifiers
,
262 Window grab_window
, bool owner_events
,
263 int pointer_mode
, int keyboard_mode
,
264 bool allow_scroll_lock
)
266 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
268 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
269 XGrabKey(otk::OBDisplay::display
, keycode
, modifiers
| _mask_list
[cnt
],
270 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
273 void OBDisplay::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
276 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
277 XUngrabKey(otk::OBDisplay::display
, keycode
, modifiers
| _mask_list
[cnt
],
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