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.
25 #include "obt/display.h"
26 #include "obt/keyboard.h"
31 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | PointerMotionMask)
32 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
34 #define MASK_LIST_SIZE 8
36 /*! A list of all possible combinations of keyboard lock masks */
37 static guint mask_list
[MASK_LIST_SIZE
];
38 static guint kgrabs
= 0;
39 static guint pgrabs
= 0;
40 /*! The time at which the last grab was made */
41 static Time grab_time
= CurrentTime
;
42 static gint passive_count
= 0;
44 static Time
ungrab_time(void)
46 Time t
= event_curtime
;
47 if (grab_time
== CurrentTime
||
48 !(t
== CurrentTime
|| event_time_after(t
, grab_time
)))
49 /* When the time moves backward on the server, then we can't use
50 the grab time because that will be in the future. So instead we
51 have to use CurrentTime.
53 "XUngrabPointer does not release the pointer if the specified time
54 is earlier than the last-pointer-grab time or is later than the
55 current X server time."
57 t
= CurrentTime
; /*grab_time;*/
61 gboolean
grab_on_keyboard(void)
66 gboolean
grab_on_pointer(void)
71 gboolean
grab_keyboard_full(gboolean grab
)
77 ret
= XGrabKeyboard(obt_display
,
78 RootWindow(obt_display
, ob_screen
),
79 False
, GrabModeAsync
, GrabModeAsync
,
80 event_curtime
) == Success
;
85 grab_time
= event_curtime
;
89 } else if (kgrabs
> 0) {
91 XUngrabKeyboard(obt_display
, ungrab_time());
99 gboolean
grab_pointer_full(gboolean grab
, gboolean owner_events
,
100 gboolean confine
, ObCursor cur
)
102 gboolean ret
= FALSE
;
106 ret
= XGrabPointer(obt_display
, screen_support_win
, owner_events
,
108 GrabModeAsync
, GrabModeAsync
,
109 (confine
? RootWindow(obt_display
, ob_screen
) :
111 ob_cursor(cur
), event_curtime
) == Success
;
115 grab_time
= event_curtime
;
118 } else if (pgrabs
> 0) {
120 XUngrabPointer(obt_display
, ungrab_time());
127 gint
grab_server(gboolean grab
)
129 static guint sgrabs
= 0;
132 XGrabServer(obt_display
);
133 XSync(obt_display
, FALSE
);
135 } else if (sgrabs
> 0) {
137 XUngrabServer(obt_display
);
144 void grab_startup(gboolean reconfig
)
147 guint num
, caps
, scroll
;
149 num
= obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_NUMLOCK
);
150 caps
= obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_CAPSLOCK
);
151 scroll
= obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_SCROLLLOCK
);
154 mask_list
[i
++] = num
;
155 mask_list
[i
++] = caps
;
156 mask_list
[i
++] = scroll
;
157 mask_list
[i
++] = num
| caps
;
158 mask_list
[i
++] = num
| scroll
;
159 mask_list
[i
++] = caps
| scroll
;
160 mask_list
[i
++] = num
| caps
| scroll
;
161 g_assert(i
== MASK_LIST_SIZE
);
164 void grab_shutdown(gboolean reconfig
)
166 if (reconfig
) return;
168 while (ungrab_keyboard());
169 while (ungrab_pointer());
170 while (grab_server(FALSE
));
173 void grab_button_full(guint button
, guint state
, Window win
, guint mask
,
174 gint pointer_mode
, ObCursor cur
)
178 /* can get BadAccess from these */
179 obt_display_ignore_errors(TRUE
);
180 for (i
= 0; i
< MASK_LIST_SIZE
; ++i
)
181 XGrabButton(obt_display
, button
, state
| mask_list
[i
], win
, False
,
182 mask
, pointer_mode
, GrabModeAsync
, None
, ob_cursor(cur
));
183 obt_display_ignore_errors(FALSE
);
184 if (obt_display_error_occured
)
185 ob_debug("Failed to grab button %d modifiers %d", button
, state
);
188 void ungrab_button(guint button
, guint state
, Window win
)
192 for (i
= 0; i
< MASK_LIST_SIZE
; ++i
)
193 XUngrabButton(obt_display
, button
, state
| mask_list
[i
], win
);
196 void grab_key(guint keycode
, guint state
, Window win
, gint keyboard_mode
)
200 /* can get BadAccess' from these */
201 obt_display_ignore_errors(TRUE
);
202 for (i
= 0; i
< MASK_LIST_SIZE
; ++i
)
203 XGrabKey(obt_display
, keycode
, state
| mask_list
[i
], win
, FALSE
,
204 GrabModeAsync
, keyboard_mode
);
205 obt_display_ignore_errors(FALSE
);
206 if (obt_display_error_occured
)
207 ob_debug("Failed to grab keycode %d modifiers %d", keycode
, state
);
210 void ungrab_all_keys(Window win
)
212 XUngrabKey(obt_display
, AnyKey
, AnyModifier
, win
);
215 void grab_key_passive_count(int change
)
217 if (grab_on_keyboard()) return;
218 passive_count
+= change
;
219 if (passive_count
< 0) passive_count
= 0;
222 void ungrab_passive_key(void)
224 /*ob_debug("ungrabbing %d passive grabs\n", passive_count);*/
226 /* kill out passive grab */
227 XUngrabKeyboard(obt_display
, event_curtime
);