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/extensions/shape.h>
20 #endif // HAVE_STDIO_H
24 #endif // HAVE_STDLIB_H
28 #endif // HAVE_SIGNAL_H
32 #endif // HAVE_FCNTL_H
35 # include <sys/types.h>
37 #endif // HAVE_UNISTD_H
40 #define _(str) gettext(str)
46 Display *OBDisplay::display = (Display*) 0;
47 bool OBDisplay::_shape = false;
48 int OBDisplay::_shape_event_basep = 0;
49 bool OBDisplay::_xinerama = false;
50 int OBDisplay::_xinerama_event_basep = 0;
51 unsigned int OBDisplay::_mask_list[8];
52 unsigned int OBDisplay::_scrollLockMask = 0;
53 unsigned int OBDisplay::_numLockMask = 0;
54 OBDisplay::ScreenInfoList OBDisplay::_screenInfoList;
55 BGCCache *OBDisplay::_gccache = (BGCCache*) 0;
56 int OBDisplay::_grab_count = 0;
59 int OBDisplay::xerrorHandler(Display *d, XErrorEvent *e)
64 //if (e->error_code != BadWindow)
66 XGetErrorText(d, e->error_code, errtxt, 128);
67 printf("X Error: %s\n", errtxt);
68 if (e->error_code != BadWindow)
80 void OBDisplay::initialize(char *name)
86 if (!(display = XOpenDisplay(name))) {
87 printf(_("Unable to open connection to the X server. Please set the \n\
88 DISPLAY environment variable approriately, or use the '-display' command \n\
89 line argument.\n\n"));
92 if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) {
93 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
97 // set our error handler for X errors
98 XSetErrorHandler(xerrorHandler);
100 // set the DISPLAY environment variable for any lauched children, to the
101 // display we're using, so they open in the right place.
102 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
103 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
104 DisplayString(display)).c_str()))) {
105 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
109 // find the availability of X extensions we like to use
111 _shape = XShapeQueryExtension(display, &_shape_event_basep, &junk);
115 _xinerama = XineramaQueryExtension(display, &_xinerama_event_basep, &junk);
118 // get lock masks that are defined by the display (not constant)
119 XModifierKeymap *modmap;
121 modmap = XGetModifierMapping(display);
122 if (modmap && modmap->max_keypermod > 0) {
123 const int mask_table[] = {
124 ShiftMask, LockMask, ControlMask, Mod1Mask,
125 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
127 const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
128 modmap->max_keypermod;
129 // get the values of the keyboard lock modifiers
130 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
131 // since it doesn't need to be.
132 const KeyCode num_lock = XKeysymToKeycode(display, XK_Num_Lock);
133 const KeyCode scroll_lock = XKeysymToKeycode(display, XK_Scroll_Lock);
135 for (size_t cnt = 0; cnt < size; ++cnt) {
136 if (! modmap->modifiermap[cnt]) continue;
138 if (num_lock == modmap->modifiermap[cnt])
139 _numLockMask = mask_table[cnt / modmap->max_keypermod];
140 if (scroll_lock == modmap->modifiermap[cnt])
141 _scrollLockMask = mask_table[cnt / modmap->max_keypermod];
145 if (modmap) XFreeModifiermap(modmap);
148 _mask_list[1] = LockMask;
149 _mask_list[2] = _numLockMask;
150 _mask_list[3] = LockMask | _numLockMask;
151 _mask_list[4] = _scrollLockMask;
152 _mask_list[5] = _scrollLockMask | LockMask;
153 _mask_list[6] = _scrollLockMask | _numLockMask;
154 _mask_list[7] = _scrollLockMask | LockMask | _numLockMask;
156 // Get information on all the screens which are available.
157 _screenInfoList.reserve(ScreenCount(display));
158 for (int i = 0; i < ScreenCount(display); ++i)
159 _screenInfoList.push_back(ScreenInfo(i));
161 _gccache = new BGCCache(_screenInfoList.size());
165 void OBDisplay::destroy()
168 while (_grab_count > 0)
170 XCloseDisplay(display);
174 const ScreenInfo* OBDisplay::screenInfo(int snum) {
176 assert(snum < static_cast<int>(_screenInfoList.size()));
177 return &_screenInfoList[snum];
181 const ScreenInfo* OBDisplay::findScreen(Window root)
183 ScreenInfoList::iterator it, end = _screenInfoList.end();
184 for (it = _screenInfoList.begin(); it != end; ++it)
185 if (it->rootWindow() == root)
191 void OBDisplay::grab()
193 if (_grab_count == 0)
194 XGrabServer(display);
199 void OBDisplay::ungrab()
201 if (_grab_count == 0) return;
203 if (_grab_count == 0)
204 XUngrabServer(display);
214 * Grabs a button, but also grabs the button in every possible combination
215 * with the keyboard lock keys, so that they do not cancel out the event.
217 * if allow_scroll_lock is true then only the top half of the lock mask
218 * table is used and scroll lock is ignored. This value defaults to false.
220 void OBDisplay::grabButton(unsigned int button, unsigned int modifiers,
221 Window grab_window, bool owner_events,
222 unsigned int event_mask, int pointer_mode,
223 int keyboard_mode, Window confine_to,
224 Cursor cursor, bool allow_scroll_lock) {
225 unsigned int length = (allow_scroll_lock) ? 8 / 2:
227 for (size_t cnt = 0; cnt < length; ++cnt)
228 XGrabButton(otk::OBDisplay::display, button, modifiers | _mask_list[cnt],
229 grab_window, owner_events, event_mask, pointer_mode,
230 keyboard_mode, confine_to, cursor);
235 * Releases the grab on a button, and ungrabs all possible combinations of the
236 * keyboard lock keys.
238 void OBDisplay::ungrabButton(unsigned int button, unsigned int modifiers,
239 Window grab_window) {
240 for (size_t cnt = 0; cnt < 8; ++cnt)
241 XUngrabButton(otk::OBDisplay::display, button, modifiers | _mask_list[cnt],
245 void OBDisplay::grabKey(unsigned int keycode, unsigned int modifiers,
246 Window grab_window, bool owner_events,
247 int pointer_mode, int keyboard_mode,
248 bool allow_scroll_lock)
250 unsigned int length = (allow_scroll_lock) ? 8 / 2:
252 for (size_t cnt = 0; cnt < length; ++cnt)
253 XGrabKey(otk::OBDisplay::display, keycode, modifiers | _mask_list[cnt],
254 grab_window, owner_events, pointer_mode, keyboard_mode);
257 void OBDisplay::ungrabKey(unsigned int keycode, unsigned int modifiers,
260 for (size_t cnt = 0; cnt < 8; ++cnt)
261 XUngrabKey(otk::OBDisplay::display, keycode, modifiers | _mask_list[cnt],