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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
;
45 bool OBDisplay::_xinerama
= false;
46 int OBDisplay::_xinerama_event_basep
;
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 XGetErrorText(d
, e
->error_code
, errtxt
, 128);
58 printf("X Error: %s\n", errtxt
);
68 void OBDisplay::initialize(char *name
)
74 if (!(display
= XOpenDisplay(name
))) {
75 printf(_("Unable to open connection to the X server. Please set the \n\
76 DISPLAY environment variable approriately, or use the '-display' command \n\
77 line argument.\n\n"));
80 if (fcntl(ConnectionNumber(display
), F_SETFD
, 1) == -1) {
81 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
85 // set our error handler for X errors
86 XSetErrorHandler(xerrorHandler
);
88 // set the DISPLAY environment variable for any lauched children, to the
89 // display we're using, so they open in the right place.
90 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
91 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
92 DisplayString(display
)).c_str()))) {
93 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
97 // find the availability of X extensions we like to use
99 _shape
= XShapeQueryExtension(display
, &_shape_event_basep
, &junk
);
103 _xinerama
= XineramaQueryExtension(display
, &_xinerama_event_basep
, &junk
);
106 // get lock masks that are defined by the display (not constant)
107 XModifierKeymap
*modmap
;
108 unsigned int NumLockMask
= 0, ScrollLockMask
= 0;
110 modmap
= XGetModifierMapping(display
);
111 if (modmap
&& modmap
->max_keypermod
> 0) {
112 const int mask_table
[] = {
113 ShiftMask
, LockMask
, ControlMask
, Mod1Mask
,
114 Mod2Mask
, Mod3Mask
, Mod4Mask
, Mod5Mask
116 const size_t size
= (sizeof(mask_table
) / sizeof(mask_table
[0])) *
117 modmap
->max_keypermod
;
118 // get the values of the keyboard lock modifiers
119 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
120 // since it doesn't need to be.
121 const KeyCode num_lock
= XKeysymToKeycode(display
, XK_Num_Lock
);
122 const KeyCode scroll_lock
= XKeysymToKeycode(display
, XK_Scroll_Lock
);
124 for (size_t cnt
= 0; cnt
< size
; ++cnt
) {
125 if (! modmap
->modifiermap
[cnt
]) continue;
127 if (num_lock
== modmap
->modifiermap
[cnt
])
128 NumLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
129 if (scroll_lock
== modmap
->modifiermap
[cnt
])
130 ScrollLockMask
= mask_table
[cnt
/ modmap
->max_keypermod
];
134 if (modmap
) XFreeModifiermap(modmap
);
137 _mask_list
[1] = LockMask
;
138 _mask_list
[2] = NumLockMask
;
139 _mask_list
[3] = LockMask
| NumLockMask
;
140 _mask_list
[4] = ScrollLockMask
;
141 _mask_list
[5] = ScrollLockMask
| LockMask
;
142 _mask_list
[6] = ScrollLockMask
| NumLockMask
;
143 _mask_list
[7] = ScrollLockMask
| LockMask
| NumLockMask
;
145 // Get information on all the screens which are available.
146 _screenInfoList
.reserve(ScreenCount(display
));
147 for (int i
= 0; i
< ScreenCount(display
); ++i
)
148 _screenInfoList
.push_back(ScreenInfo(i
));
150 _gccache
= new BGCCache(_screenInfoList
.size());
154 void OBDisplay::destroy()
157 XCloseDisplay(display
);
161 const ScreenInfo
* OBDisplay::screenInfo(int snum
) {
163 assert(snum
< static_cast<int>(_screenInfoList
.size()));
164 return &_screenInfoList
[snum
];
176 * Grabs a button, but also grabs the button in every possible combination
177 * with the keyboard lock keys, so that they do not cancel out the event.
179 * if allow_scroll_lock is true then only the top half of the lock mask
180 * table is used and scroll lock is ignored. This value defaults to false.
182 void OBDisplay::grabButton(unsigned int button
, unsigned int modifiers
,
183 Window grab_window
, bool owner_events
,
184 unsigned int event_mask
, int pointer_mode
,
185 int keyboard_mode
, Window confine_to
,
186 Cursor cursor
, bool allow_scroll_lock
) {
187 unsigned int length
= (allow_scroll_lock
) ? 8 / 2:
189 for (size_t cnt
= 0; cnt
< length
; ++cnt
)
190 XGrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
191 grab_window
, owner_events
, event_mask
, pointer_mode
,
192 keyboard_mode
, confine_to
, cursor
);
197 * Releases the grab on a button, and ungrabs all possible combinations of the
198 * keyboard lock keys.
200 void OBDisplay::ungrabButton(unsigned int button
, unsigned int modifiers
,
201 Window grab_window
) {
202 for (size_t cnt
= 0; cnt
< 8; ++cnt
)
203 XUngrabButton(otk::OBDisplay::display
, button
, modifiers
| _mask_list
[cnt
],
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