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Dogcows Code - chaz/openbox/blob - otk/display.cc
1 // -*- mode: C++; indent-tabs-mode: nil; -*-
4 # include "../config.h"
8 #include "screeninfo.hh"
12 #include <X11/keysym.h>
16 #endif // HAVE_STDIO_H
20 #endif // HAVE_STDLIB_H
24 #endif // HAVE_SIGNAL_H
28 #endif // HAVE_FCNTL_H
31 # include <sys/types.h>
33 #endif // HAVE_UNISTD_H
36 #define _(str) gettext(str)
42 Display
*OBDisplay::display
= (Display
*) 0;
43 bool OBDisplay::_shape
= false;
44 int OBDisplay::_shape_event_basep
= 0;
45 bool OBDisplay::_xinerama
= false;
46 int OBDisplay::_xinerama_event_basep
= 0;
47 unsigned int OBDisplay::_mask_list
[8];
48 OBDisplay::ScreenInfoList
OBDisplay::_screenInfoList
;
49 BGCCache
*OBDisplay::_gccache
= (BGCCache
*) 0;
52 int OBDisplay::xerrorHandler(Display
*d
, XErrorEvent
*e
)
57 //if (e->error_code != BadWindow)
59 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
60 printf("X Error: %s\n", errtxt
);
71 void OBDisplay::initialize(char *name
)
77 if (!(display
= XOpenDisplay(name
))) {
78 printf(_("Unable to open connection to the X server. Please set the \n\
79 DISPLAY environment variable approriately, or use the '-display' command \n\
80 line argument.\n\n"));
83 if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
84 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
88 // set our error handler for X errors
89 XSetErrorHandler(xerrorHandler
);
91 // set the DISPLAY environment variable for any lauched children, to the
92 // display we're using, so they open in the right place.
93 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
94 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
95 DisplayString(display
)).c_str()))) {
96 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
100 // find the availability of X extensions we like to use
102 _shape
= XShapeQueryExtension(display
, &_shape_event_basep
, &junk
);
106 _xinerama
= XineramaQueryExtension(display
, &_xinerama_event_basep
, &junk
);
109 // get lock masks that are defined by the display (not constant)
110 XModifierKeymap
*modmap
;
111 unsigned int NumLockMask
= 0, ScrollLockMask
= 0;
113 modmap
= XGetModifierMapping(display
);
114 if (modmap
&& modmap
->max_keypermod
> 0) {
115 const int mask_table
[] = {
116 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
117 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
119 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
120 modmap
->max_keypermod
;
121 // get the values of the keyboard lock modifiers
122 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
123 // since it doesn't need to be.
124 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
125 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
127 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
128 if (! modmap
->modifiermap
[cnt
]) continue;
130 if (num_lock
== modmap
->modifiermap
[cnt
])
131 NumLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
132 if (scroll_lock
== modmap
->modifiermap
[cnt
])
133 ScrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
137 if (modmap
) XFreeModifiermap(modmap
);
140 _mask_list
[1] = LockMask
;
141 _mask_list
[2] = NumLockMask
;
142 _mask_list
[3] = LockMask
| NumLockMask
;
143 _mask_list
[4] = ScrollLockMask
;
144 _mask_list
[5] = ScrollLockMask
| LockMask
;
145 _mask_list
[6] = ScrollLockMask
| NumLockMask
;
146 _mask_list
[7] = ScrollLockMask
| LockMask
| NumLockMask
;
148 // Get information on all the screens which are available.
149 _screenInfoList
.reserve(ScreenCount(display
));
150 for (int i
= 0; i
< ScreenCount(display
); ++i
)
151 _screenInfoList
.push_back(ScreenInfo(i
));
153 _gccache
= new BGCCache(_screenInfoList
.size());
157 void OBDisplay::destroy()
160 XCloseDisplay(display
);
164 const ScreenInfo
* OBDisplay::screenInfo(int snum
) {
166 assert(snum
< static_cast<int>(_screenInfoList
.size()));
167 return &_screenInfoList
[snum
];
179 * Grabs a button, but also grabs the button in every possible combination
180 * with the keyboard lock keys, so that they do not cancel out the event.
182 * if allow_scroll_lock is true then only the top half of the lock mask
183 * table is used and scroll lock is ignored. This value defaults to false.
185 void OBDisplay::grabButton(unsigned int button
, unsigned int modifiers
,
186 Window grab_window
, bool owner_events
,
187 unsigned int event_mask
, int pointer_mode
,
188 int keyboard_mode
, Window confine_to
,
189 Cursor cursor
, bool allow_scroll_lock
) {
190 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
192 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
193 XGrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
194 grab_window
, owner_events
, event_mask
, pointer_mode
,
195 keyboard_mode
, confine_to
, cursor
);
200 * Releases the grab on a button, and ungrabs all possible combinations of the
201 * keyboard lock keys.
203 void OBDisplay::ungrabButton(unsigned int button
, unsigned int modifiers
,
204 Window grab_window
) {
205 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
206 XUngrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
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