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 #define GRAB_KEY_MASK (KeyPressMask | KeyReleaseMask)
  10
  11 #define MASK_LIST_SIZE 8
  12
  13 /*! A list of all possible combinations of keyboard lock masks */
  14 static unsigned int mask_list[MASK_LIST_SIZE];
  15
  16 int grab_keyboard(gboolean grab)
  17 {
  18     static guint kgrabs = 0;
  19     if (grab) {
  20         if (kgrabs++ == 0)
  21             XGrabKeyboard(ob_display, ob_root, FALSE, GrabModeAsync,
  22                           GrabModeAsync, event_lasttime);
  23     } else if (kgrabs > 0) {
  24         if (--kgrabs == 0)
  25             XUngrabKeyboard(ob_display, event_lasttime);
  26     }
  27     return kgrabs;
  28 }
  29
  30 int grab_pointer(gboolean grab, Cursor cur)
  31 {
  32     static guint pgrabs = 0;
  33     if (grab) {
  34         if (pgrabs++ == 0)
  35             XGrabPointer(ob_display, ob_root, False, GRAB_PTR_MASK,
  36                          GrabModeAsync, GrabModeAsync, FALSE, cur,
  37                          event_lasttime);
  38     } else if (pgrabs > 0) {
  39         if (--pgrabs == 0)
  40             XUngrabPointer(ob_display, event_lasttime);
  41     }
  42     return pgrabs;
  43 }
  44
  45 int grab_pointer_window(gboolean grab, Cursor cur, Window win)
  46 {
  47     static guint pgrabs = 0;
  48     if (grab) {
  49         if (pgrabs++ == 0)
  50             XGrabPointer(ob_display, win, False, GRAB_PTR_MASK, GrabModeAsync,
  51                          GrabModeAsync, TRUE, cur, event_lasttime);
  52     } else if (pgrabs > 0) {
  53         if (--pgrabs == 0)
  54             XUngrabPointer(ob_display, event_lasttime);
  55     }
  56     return pgrabs;
  57 }
  58
  59 int grab_server(gboolean grab)
  60 {
  61     static guint sgrabs = 0;
  62     if (grab) {
  63         if (sgrabs++ == 0) {
  64             XGrabServer(ob_display);
  65             XSync(ob_display, FALSE);
  66         }
  67     } else if (sgrabs > 0) {
  68         if (--sgrabs == 0) {
  69             XUngrabServer(ob_display);
  70             XFlush(ob_display);
  71         }
  72     }
  73     return sgrabs;
  74 }
  75
  76 void grab_startup()
  77 {
  78     guint i = 0;
  79
  80     mask_list[i++] = 0;
  81     mask_list[i++] = LockMask;
  82     mask_list[i++] = NumLockMask;
  83     mask_list[i++] = LockMask | NumLockMask;
  84     mask_list[i++] = ScrollLockMask;
  85     mask_list[i++] = ScrollLockMask | LockMask;
  86     mask_list[i++] = ScrollLockMask | NumLockMask;
  87     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
  88     g_assert(i == MASK_LIST_SIZE);
  89 }
  90
  91 void grab_shutdown()
  92 {
  93     while (grab_keyboard(FALSE));
  94     while (grab_pointer(FALSE, None));
  95     while (grab_pointer_window(FALSE, None, None));
  96     while (grab_server(FALSE));
  97 }
  98
  99 void grab_button_full(guint button, guint state, Window win, guint mask,
 100                       int pointer_mode, Cursor cursor)
 101 {
 102     guint i;
 103
 104     for (i = 0; i < MASK_LIST_SIZE; ++i)
 105         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 106                     pointer_mode, GrabModeSync, None, cursor);
 107 }
 108
 109 void grab_button(guint button, guint state, Window win, guint mask)
 110 {
 111     grab_button_full(button, state, win, mask, GrabModeAsync, None);
 112 }
 113
 114 void ungrab_button(guint button, guint state, Window win)
 115 {
 116     guint i;
 117
 118     for (i = 0; i < MASK_LIST_SIZE; ++i)
 119         XUngrabButton(ob_display, button, state | mask_list[i], win);
 120 }
 121
 122 void grab_key(guint keycode, guint state, int keyboard_mode)
 123 {
 124     guint i;
 125
 126     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 127     xerror_occured = FALSE;
 128     for (i = 0; i < MASK_LIST_SIZE; ++i)
 129         XGrabKey(ob_display, keycode, state | mask_list[i], ob_root, FALSE,
 130                  GrabModeSync, keyboard_mode);
 131     xerror_set_ignore(FALSE);
 132     if (xerror_occured)
 133         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 134 }
 135
 136 void ungrab_all_keys()
 137 {
 138     XUngrabKey(ob_display, AnyKey, AnyModifier, ob_root);
 139 }