Dogcows Code - chaz/openbox/blob - openbox/grab.c

   1 #include "openbox.h"
   2 #include "event.h"
   3 #include "xerror.h"
   4
   5 #include <glib.h>
   6 #include <X11/Xlib.h>
   7
   8 #define GRAB_PTR_MASK (ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
   9
  10 #define MASK_LIST_SIZE 8
  11
  12 /*! A list of all possible combinations of keyboard lock masks */
  13 static unsigned int mask_list[MASK_LIST_SIZE];
  14
  15 int grab_keyboard(gboolean grab)
  16 {
  17     static guint kgrabs = 0;
  18     if (grab) {
  19         if (kgrabs++ == 0)
  20             XGrabKeyboard(ob_display, ob_root, 0, GrabModeAsync, GrabModeSync,
  21                           event_lasttime);
  22     } else if (kgrabs > 0) {
  23         if (--kgrabs == 0)
  24             XUngrabKeyboard(ob_display, event_lasttime);
  25     }
  26     return kgrabs;
  27 }
  28
  29 int grab_pointer(gboolean grab, Cursor cur)
  30 {
  31     static guint pgrabs = 0;
  32     if (grab) {
  33         if (pgrabs++ == 0)
  34             XGrabPointer(ob_display, ob_root, False, GRAB_PTR_MASK,
  35                          GrabModeAsync, GrabModeAsync, FALSE, cur,
  36                          event_lasttime);
  37     } else if (pgrabs > 0) {
  38         if (--pgrabs == 0)
  39             XUngrabPointer(ob_display, event_lasttime);
  40     }
  41     return pgrabs;
  42 }
  43
  44 int grab_pointer_window(gboolean grab, Cursor cur, Window win)
  45 {
  46     static guint pgrabs = 0;
  47     if (grab) {
  48         if (pgrabs++ == 0)
  49             XGrabPointer(ob_display, win, False, GRAB_PTR_MASK, GrabModeAsync,
  50                          GrabModeAsync, TRUE, cur, event_lasttime);
  51     } else if (pgrabs > 0) {
  52         if (--pgrabs == 0)
  53             XUngrabPointer(ob_display, event_lasttime);
  54     }
  55     return pgrabs;
  56 }
  57
  58 int grab_server(gboolean grab)
  59 {
  60     static guint sgrabs = 0;
  61     if (grab) {
  62         if (sgrabs++ == 0) {
  63             XGrabServer(ob_display);
  64             XSync(ob_display, FALSE);
  65         }
  66     } else if (sgrabs > 0) {
  67         if (--sgrabs == 0) {
  68             XUngrabServer(ob_display);
  69             XFlush(ob_display);
  70         }
  71     }
  72     return sgrabs;
  73 }
  74
  75 void grab_startup()
  76 {
  77     guint i = 0;
  78
  79     mask_list[i++] = 0;
  80     mask_list[i++] = LockMask;
  81     mask_list[i++] = NumLockMask;
  82     mask_list[i++] = LockMask | NumLockMask;
  83     mask_list[i++] = ScrollLockMask;
  84     mask_list[i++] = ScrollLockMask | LockMask;
  85     mask_list[i++] = ScrollLockMask | NumLockMask;
  86     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
  87     g_assert(i == MASK_LIST_SIZE);
  88 }
  89
  90 void grab_shutdown()
  91 {
  92     while (grab_keyboard(FALSE));
  93     while (grab_pointer(FALSE, None));
  94     while (grab_pointer_window(FALSE, None, None));
  95     while (grab_server(FALSE));
  96 }
  97
  98 void grab_button(guint button, guint state, Window win, guint mask,
  99                  int pointer_mode)
 100 {
 101     guint i;
 102
 103     for (i = 0; i < MASK_LIST_SIZE; ++i)
 104         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 105                     pointer_mode, GrabModeSync, None, None);
 106 }
 107
 108 void ungrab_button(guint button, guint state, Window win)
 109 {
 110     guint i;
 111
 112     for (i = 0; i < MASK_LIST_SIZE; ++i)
 113         XUngrabButton(ob_display, button, state | mask_list[i], win);
 114 }
 115
 116 void grab_key(guint keycode, guint state, int keyboard_mode)
 117 {
 118     guint i;
 119
 120     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 121     xerror_occured = FALSE;
 122     for (i = 0; i < MASK_LIST_SIZE; ++i)
 123         XGrabKey(ob_display, keycode, state | mask_list[i], ob_root, FALSE,
 124                  GrabModeSync, keyboard_mode);
 125     xerror_set_ignore(FALSE);
 126     if (xerror_occured)
 127         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 128 }
 129
 130 void ungrab_all_keys()
 131 {
 132     XUngrabKey(ob_display, AnyKey, AnyModifier, ob_root);
 133 }