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 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],