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)
95 if (!(_display = XOpenDisplay(NULL))) {
96 printf(_("Unable to open connection to the X server. Please set the \n\
97 DISPLAY environment variable approriately.\n\n"));
100 if (fcntl(ConnectionNumber(_display), F_SETFD, 1) == -1) {
101 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
104 if (!XSupportsLocale())
105 printf(_("X server does not support locale.\n"));
106 if (!XSetLocaleModifiers(""))
107 printf(_("Cannot set locale modifiers for the X server.\n"));
109 // set our error handler for X errors
110 XSetErrorHandler(xerrorHandler);
112 // set the DISPLAY environment variable for any lauched children, to the
113 // display we're using, so they open in the right place.
114 putenv(std::string("DISPLAY=") + DisplayString(_display));
116 // find the availability of X extensions we like to use
118 _xkb = XkbQueryExtension(_display, &junk, &_xkb_event_basep, &junk, NULL,
123 _shape = XShapeQueryExtension(_display, &_shape_event_basep, &junk);
127 _xinerama = XineramaQueryExtension(_display, &_xinerama_event_basep, &junk);
130 // get lock masks that are defined by the display (not constant)
131 XModifierKeymap *modmap;
133 modmap = XGetModifierMapping(_display);
134 if (modmap && modmap->max_keypermod > 0) {
135 const int mask_table[] = {
136 ShiftMask, LockMask, ControlMask, Mod1Mask,
137 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
139 const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
140 modmap->max_keypermod;
141 // get the values of the keyboard lock modifiers
142 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
143 // since it doesn't need to be.
144 const KeyCode num_lock = XKeysymToKeycode(_display, XK_Num_Lock);
145 const KeyCode scroll_lock = XKeysymToKeycode(_display, XK_Scroll_Lock);
147 for (size_t cnt = 0; cnt < size; ++cnt) {
148 if (! modmap->modifiermap[cnt]) continue;
150 if (num_lock == modmap->modifiermap[cnt])
151 _num_lock_mask = mask_table[cnt / modmap->max_keypermod];
152 if (scroll_lock == modmap->modifiermap[cnt])
153 _scroll_lock_mask = mask_table[cnt / modmap->max_keypermod];
157 if (modmap) XFreeModifiermap(modmap);
160 _mask_list[1] = LockMask;
161 _mask_list[2] = _num_lock_mask;
162 _mask_list[3] = LockMask | _num_lock_mask;
163 _mask_list[4] = _scroll_lock_mask;
164 _mask_list[5] = _scroll_lock_mask | LockMask;
165 _mask_list[6] = _scroll_lock_mask | _num_lock_mask;
166 _mask_list[7] = _scroll_lock_mask | LockMask | _num_lock_mask;
168 // Get information on all the screens which are available.
169 _screenInfoList.reserve(ScreenCount(_display));
170 for (int i = 0; i < ScreenCount(_display); ++i)
171 _screenInfoList.push_back(ScreenInfo(i));
173 _gccache = new GCCache(_screenInfoList.size());
180 while (_grab_count > 0)
182 XCloseDisplay(_display);
186 const ScreenInfo* Display::screenInfo(int snum)
189 assert(snum < static_cast<int>(_screenInfoList.size()));
190 return &_screenInfoList[snum];
194 const ScreenInfo* Display::findScreen(Window root)
196 ScreenInfoList::iterator it, end = _screenInfoList.end();
197 for (it = _screenInfoList.begin(); it != end; ++it)
198 if (it->rootWindow() == root)
206 if (_grab_count == 0)
207 XGrabServer(_display);
212 void Display::ungrab()
214 if (_grab_count == 0) return;
216 if (_grab_count == 0)
217 XUngrabServer(_display);
227 * Grabs a button, but also grabs the button in every possible combination
228 * with the keyboard lock keys, so that they do not cancel out the event.
230 * if allow_scroll_lock is true then only the top half of the lock mask
231 * table is used and scroll lock is ignored. This value defaults to false.
233 void Display::grabButton(unsigned int button, unsigned int modifiers,
234 Window grab_window, bool owner_events,
235 unsigned int event_mask, int pointer_mode,
236 int keyboard_mode, Window confine_to,
237 Cursor cursor, bool allow_scroll_lock) const
239 unsigned int length = (allow_scroll_lock) ? 8 / 2:
241 for (size_t cnt = 0; cnt < length; ++cnt)
242 XGrabButton(_display, button, modifiers | _mask_list[cnt],
243 grab_window, owner_events, event_mask, pointer_mode,
244 keyboard_mode, confine_to, cursor);
249 * Releases the grab on a button, and ungrabs all possible combinations of the
250 * keyboard lock keys.
252 void Display::ungrabButton(unsigned int button, unsigned int modifiers,
253 Window grab_window) const
255 for (size_t cnt = 0; cnt < 8; ++cnt)
256 XUngrabButton(_display, button, modifiers | _mask_list[cnt],
260 void Display::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) const
265 unsigned int length = (allow_scroll_lock) ? 8 / 2:
267 for (size_t cnt = 0; cnt < length; ++cnt)
268 XGrabKey(_display, keycode, modifiers | _mask_list[cnt],
269 grab_window, owner_events, pointer_mode, keyboard_mode);
272 void Display::ungrabKey(unsigned int keycode, unsigned int modifiers,
273 Window grab_window) const
275 for (size_t cnt = 0; cnt < 8; ++cnt)
276 XUngrabKey(_display, keycode, modifiers | _mask_list[cnt],