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);
78 void OBDisplay::initialize(char *name)
84 if (!(display = XOpenDisplay(name))) {
85 printf(_("Unable to open connection to the X server. Please set the \n\
86 DISPLAY environment variable approriately, or use the '-display' command \n\
87 line argument.\n\n"));
90 if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) {
91 printf(_("Couldn't mark display connection as close-on-exec.\n\n"));
95 // set our error handler for X errors
96 XSetErrorHandler(xerrorHandler);
98 // set the DISPLAY environment variable for any lauched children, to the
99 // display we're using, so they open in the right place.
100 // XXX rm -> std::string dtmp = "DISPLAY=" + DisplayString(display);
101 if (putenv(const_cast<char*>((std::string("DISPLAY=") +
102 DisplayString(display)).c_str()))) {
103 printf(_("warning: couldn't set environment variable 'DISPLAY'\n"));
107 // find the availability of X extensions we like to use
109 _shape = XShapeQueryExtension(display, &_shape_event_basep, &junk);
113 _xinerama = XineramaQueryExtension(display, &_xinerama_event_basep, &junk);
116 // get lock masks that are defined by the display (not constant)
117 XModifierKeymap *modmap;
119 modmap = XGetModifierMapping(display);
120 if (modmap && modmap->max_keypermod > 0) {
121 const int mask_table[] = {
122 ShiftMask, LockMask, ControlMask, Mod1Mask,
123 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
125 const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
126 modmap->max_keypermod;
127 // get the values of the keyboard lock modifiers
128 // Note: Caps lock is not retrieved the same way as Scroll and Num lock
129 // since it doesn't need to be.
130 const KeyCode num_lock = XKeysymToKeycode(display, XK_Num_Lock);
131 const KeyCode scroll_lock = XKeysymToKeycode(display, XK_Scroll_Lock);
133 for (size_t cnt = 0; cnt < size; ++cnt) {
134 if (! modmap->modifiermap[cnt]) continue;
136 if (num_lock == modmap->modifiermap[cnt])
137 _numLockMask = mask_table[cnt / modmap->max_keypermod];
138 if (scroll_lock == modmap->modifiermap[cnt])
139 _scrollLockMask = mask_table[cnt / modmap->max_keypermod];
143 if (modmap) XFreeModifiermap(modmap);
146 _mask_list[1] = LockMask;
147 _mask_list[2] = _numLockMask;
148 _mask_list[3] = LockMask | _numLockMask;
149 _mask_list[4] = _scrollLockMask;
150 _mask_list[5] = _scrollLockMask | LockMask;
151 _mask_list[6] = _scrollLockMask | _numLockMask;
152 _mask_list[7] = _scrollLockMask | LockMask | _numLockMask;
154 // Get information on all the screens which are available.
155 _screenInfoList.reserve(ScreenCount(display));
156 for (int i = 0; i < ScreenCount(display); ++i)
157 _screenInfoList.push_back(ScreenInfo(i));
159 _gccache = new BGCCache(_screenInfoList.size());
163 void OBDisplay::destroy()
166 while (_grab_count > 0)
168 XCloseDisplay(display);
172 const ScreenInfo* OBDisplay::screenInfo(int snum) {
174 assert(snum < static_cast<int>(_screenInfoList.size()));
175 return &_screenInfoList[snum];
179 void OBDisplay::grab()
181 if (_grab_count == 0)
182 XGrabServer(display);
187 void OBDisplay::ungrab()
189 if (_grab_count == 0) return;
191 if (_grab_count == 0)
192 XUngrabServer(display);
202 * Grabs a button, but also grabs the button in every possible combination
203 * with the keyboard lock keys, so that they do not cancel out the event.
205 * if allow_scroll_lock is true then only the top half of the lock mask
206 * table is used and scroll lock is ignored. This value defaults to false.
208 void OBDisplay::grabButton(unsigned int button, unsigned int modifiers,
209 Window grab_window, bool owner_events,
210 unsigned int event_mask, int pointer_mode,
211 int keyboard_mode, Window confine_to,
212 Cursor cursor, bool allow_scroll_lock) {
213 unsigned int length = (allow_scroll_lock) ? 8 / 2:
215 for (size_t cnt = 0; cnt < length; ++cnt)
216 XGrabButton(otk::OBDisplay::display, button, modifiers | _mask_list[cnt],
217 grab_window, owner_events, event_mask, pointer_mode,
218 keyboard_mode, confine_to, cursor);
223 * Releases the grab on a button, and ungrabs all possible combinations of the
224 * keyboard lock keys.
226 void OBDisplay::ungrabButton(unsigned int button, unsigned int modifiers,
227 Window grab_window) {
228 for (size_t cnt = 0; cnt < 8; ++cnt)
229 XUngrabButton(otk::OBDisplay::display, button, modifiers | _mask_list[cnt],
233 void OBDisplay::grabKey(unsigned int keycode, unsigned int modifiers,
234 Window grab_window, bool owner_events,
235 int pointer_mode, int keyboard_mode,
236 bool allow_scroll_lock)
238 unsigned int length = (allow_scroll_lock) ? 8 / 2:
240 for (size_t cnt = 0; cnt < length; ++cnt)
241 XGrabKey(otk::OBDisplay::display, keycode, modifiers | _mask_list[cnt],
242 grab_window, owner_events, pointer_mode, keyboard_mode);
245 void OBDisplay::ungrabKey(unsigned int keycode, unsigned int modifiers,
248 for (size_t cnt = 0; cnt < 8; ++cnt)
249 XUngrabKey(otk::OBDisplay::display, keycode, modifiers | _mask_list[cnt],