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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 if (!(display
= XOpenDisplay(name
))) {
97 printf(_("Unable to open connection to the X server. Please set the \n\
98 DISPLAY environment variable approriately, or use the '-display' command \n\
99 line argument.\n\n"));
102 if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
103 printf(_("Couldn't mark display connection as close-on-exec.\n\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 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
113 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
114 DisplayString(display
)).c_str()))) {
115 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
119 // find the availability of X extensions we like to use
121 _xkb
= XkbQueryExtension(display
, &junk
, &_xkb_event_basep
, &junk
, NULL
,
126 _shape
= XShapeQueryExtension(display
, &_shape_event_basep
, &junk
);
130 _xinerama
= XineramaQueryExtension(display
, &_xinerama_event_basep
, &junk
);
133 // get lock masks that are defined by the display (not constant)
134 XModifierKeymap
*modmap
;
136 modmap
= XGetModifierMapping(display
);
137 if (modmap
&& modmap
->max_keypermod
> 0) {
138 const int mask_table
[] = {
139 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
140 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
142 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
143 modmap
->max_keypermod
;
144 // get the values of the keyboard lock modifiers
145 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
146 // since it doesn't need to be.
147 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
148 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
150 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
151 if (! modmap
->modifiermap
[cnt
]) continue;
153 if (num_lock
== modmap
->modifiermap
[cnt
])
154 _numLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
155 if (scroll_lock
== modmap
->modifiermap
[cnt
])
156 _scrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
160 if (modmap
) XFreeModifiermap(modmap
);
163 _mask_list
[1] = LockMask
;
164 _mask_list
[2] = _numLockMask
;
165 _mask_list
[3] = LockMask
| _numLockMask
;
166 _mask_list
[4] = _scrollLockMask
;
167 _mask_list
[5] = _scrollLockMask
| LockMask
;
168 _mask_list
[6] = _scrollLockMask
| _numLockMask
;
169 _mask_list
[7] = _scrollLockMask
| LockMask
| _numLockMask
;
171 // Get information on all the screens which are available.
172 _screenInfoList
.reserve(ScreenCount(display
));
173 for (int i
= 0; i
< ScreenCount(display
); ++i
)
174 _screenInfoList
.push_back(ScreenInfo(i
));
176 _gccache
= new BGCCache(_screenInfoList
.size());
180 void OBDisplay::destroy()
183 while (_grab_count
> 0)
185 XCloseDisplay(display
);
189 const ScreenInfo
* OBDisplay::screenInfo(int snum
) {
191 assert(snum
< static_cast<int>(_screenInfoList
.size()));
192 return &_screenInfoList
[snum
];
196 const ScreenInfo
* OBDisplay::findScreen(Window root
)
198 ScreenInfoList::iterator it
, end
= _screenInfoList
.end();
199 for (it
= _screenInfoList
.begin(); it
!= end
; ++it
)
200 if (it
->rootWindow() == root
)
206 void OBDisplay::grab()
208 if (_grab_count
== 0)
209 XGrabServer(display
);
214 void OBDisplay::ungrab()
216 if (_grab_count
== 0) return;
218 if (_grab_count
== 0)
219 XUngrabServer(display
);
229 * Grabs a button, but also grabs the button in every possible combination
230 * with the keyboard lock keys, so that they do not cancel out the event.
232 * if allow_scroll_lock is true then only the top half of the lock mask
233 * table is used and scroll lock is ignored. This value defaults to false.
235 void OBDisplay::grabButton(unsigned int button
, unsigned int modifiers
,
236 Window grab_window
, bool owner_events
,
237 unsigned int event_mask
, int pointer_mode
,
238 int keyboard_mode
, Window confine_to
,
239 Cursor cursor
, bool allow_scroll_lock
) {
240 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
242 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
243 XGrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
244 grab_window
, owner_events
, event_mask
, pointer_mode
,
245 keyboard_mode
, confine_to
, cursor
);
250 * Releases the grab on a button, and ungrabs all possible combinations of the
251 * keyboard lock keys.
253 void OBDisplay::ungrabButton(unsigned int button
, unsigned int modifiers
,
254 Window grab_window
) {
255 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
256 XUngrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
260 void OBDisplay::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
)
265 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
267 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
268 XGrabKey(otk::OBDisplay::display
, keycode
, modifiers
| _mask_list
[cnt
],
269 grab_window
, owner_events
, pointer_mode
, keyboard_mode
);
272 void OBDisplay::ungrabKey(unsigned int keycode
, unsigned int modifiers
,
275 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
276 XUngrabKey(otk::OBDisplay::display
, keycode
, modifiers
| _mask_list
[cnt
],
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