1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 grab.c for the Openbox window manager
4 Copyright (c) 2006 Mikael Magnusson
5 Copyright (c) 2003-2007 Dana Jansens
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
30 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | PointerMotionMask)
31 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
33 #define MASK_LIST_SIZE 8
35 /*! A list of all possible combinations of keyboard lock masks */
36 static guint mask_list[MASK_LIST_SIZE];
37 static guint kgrabs = 0;
38 static guint pgrabs = 0;
39 /*! The time at which the last grab was made */
40 static Time grab_time = CurrentTime;
42 static Time ungrab_time()
44 Time t = event_curtime;
45 if (!(t == CurrentTime || event_time_after(t, grab_time)))
46 /* When the time moves backward on the server, then we can't use
47 the grab time because that will be in the future. So instead we
48 have to use CurrentTime.
50 "XUngrabPointer does not release the pointer if the specified time
51 is earlier than the last-pointer-grab time or is later than the
52 current X server time."
54 t = CurrentTime; /*grab_time;*/
58 gboolean grab_on_keyboard()
63 gboolean grab_on_pointer()
68 gboolean grab_keyboard(gboolean grab)
74 ret = XGrabKeyboard(ob_display, RootWindow(ob_display, ob_screen),
75 False, GrabModeAsync, GrabModeAsync,
76 event_curtime) == Success;
80 grab_time = event_curtime;
83 } else if (kgrabs > 0) {
85 XUngrabKeyboard(ob_display, ungrab_time());
93 gboolean grab_pointer(gboolean grab, gboolean owner_events, ObCursor cur)
99 ret = XGrabPointer(ob_display, screen_support_win, owner_events,
101 GrabModeAsync, GrabModeAsync, None,
102 ob_cursor(cur), event_curtime) == Success;
106 grab_time = event_curtime;
109 } else if (pgrabs > 0) {
111 XUngrabPointer(ob_display, ungrab_time());
118 gint grab_server(gboolean grab)
120 static guint sgrabs = 0;
123 XGrabServer(ob_display);
124 XSync(ob_display, FALSE);
126 } else if (sgrabs > 0) {
128 XUngrabServer(ob_display);
135 void grab_startup(gboolean reconfig)
139 if (reconfig) return;
142 mask_list[i++] = LockMask;
143 mask_list[i++] = NumLockMask;
144 mask_list[i++] = LockMask | NumLockMask;
145 mask_list[i++] = ScrollLockMask;
146 mask_list[i++] = ScrollLockMask | LockMask;
147 mask_list[i++] = ScrollLockMask | NumLockMask;
148 mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
149 g_assert(i == MASK_LIST_SIZE);
152 void grab_shutdown(gboolean reconfig)
154 if (reconfig) return;
156 while (grab_keyboard(FALSE));
157 while (grab_pointer(FALSE, FALSE, OB_CURSOR_NONE));
158 while (grab_server(FALSE));
161 void grab_button_full(guint button, guint state, Window win, guint mask,
162 gint pointer_mode, ObCursor cur)
166 xerror_set_ignore(TRUE); /* can get BadAccess from these */
167 xerror_occured = FALSE;
168 for (i = 0; i < MASK_LIST_SIZE; ++i)
169 XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
170 pointer_mode, GrabModeSync, None, ob_cursor(cur));
171 xerror_set_ignore(FALSE);
173 ob_debug("Failed to grab button %d modifiers %d", button, state);
176 void grab_button(guint button, guint state, Window win, guint mask)
178 grab_button_full(button, state, win, mask, GrabModeAsync, OB_CURSOR_NONE);
181 void ungrab_button(guint button, guint state, Window win)
185 for (i = 0; i < MASK_LIST_SIZE; ++i)
186 XUngrabButton(ob_display, button, state | mask_list[i], win);
189 void grab_key(guint keycode, guint state, Window win, gint keyboard_mode)
193 xerror_set_ignore(TRUE); /* can get BadAccess' from these */
194 xerror_occured = FALSE;
195 for (i = 0; i < MASK_LIST_SIZE; ++i)
196 XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
197 GrabModeAsync, keyboard_mode);
198 xerror_set_ignore(FALSE);
200 ob_debug("Failed to grab keycode %d modifiers %d", keycode, state);
203 void ungrab_all_keys(Window win)
205 XUngrabKey(ob_display, AnyKey, AnyModifier, win);