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 static guint kgrabs, pgrabs, sgrabs;
   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 void grab_keyboard(gboolean grab)
  16 {
  17     if (grab) {
  18         if (kgrabs++ == 0)
  19             XGrabKeyboard(ob_display, ob_root, 0, GrabModeAsync, GrabModeSync,
  20                           event_lasttime);
  21     } else if (kgrabs > 0) {
  22         if (--kgrabs == 0)
  23             XUngrabKeyboard(ob_display, event_lasttime);
  24     }
  25 }
  26
  27 void grab_pointer(gboolean grab, Cursor cur)
  28 {
  29     if (grab) {
  30         if (pgrabs++ == 0)
  31             XGrabPointer(ob_display, ob_root, False, 0, GrabModeAsync,
  32                          GrabModeAsync, FALSE, cur, event_lasttime);
  33     } else if (pgrabs > 0) {
  34         if (--pgrabs == 0)
  35             XUngrabPointer(ob_display, event_lasttime);
  36     }
  37 }
  38
  39 void grab_server(gboolean grab)
  40 {
  41     if (grab) {
  42         if (sgrabs++ == 0) {
  43             XGrabServer(ob_display);
  44             XSync(ob_display, FALSE);
  45         }
  46     } else if (sgrabs > 0) {
  47         if (--sgrabs == 0) {
  48             XUngrabServer(ob_display);
  49             XFlush(ob_display);
  50         }
  51     }
  52 }
  53
  54 void grab_startup()
  55 {
  56     guint i = 0;
  57
  58     kgrabs = pgrabs = sgrabs = 0;
  59
  60     mask_list[i++] = 0;
  61     mask_list[i++] = LockMask;
  62     mask_list[i++] = NumLockMask;
  63     mask_list[i++] = LockMask | NumLockMask;
  64     mask_list[i++] = ScrollLockMask;
  65     mask_list[i++] = ScrollLockMask | LockMask;
  66     mask_list[i++] = ScrollLockMask | NumLockMask;
  67     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
  68     g_assert(i == MASK_LIST_SIZE);
  69 }
  70
  71 void grab_shutdown()
  72 {
  73     while (kgrabs) grab_keyboard(FALSE);
  74     while (pgrabs) grab_pointer(FALSE, None);
  75     while (sgrabs) grab_server(FALSE);
  76 }
  77
  78 void grab_button(guint button, guint state, Window win, guint mask,
  79                  int pointer_mode)
  80 {
  81     guint i;
  82
  83     for (i = 0; i < MASK_LIST_SIZE; ++i)
  84         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
  85                     pointer_mode, GrabModeSync, None, None);
  86 }
  87
  88 void ungrab_button(guint button, guint state, Window win)
  89 {
  90     guint i;
  91
  92     for (i = 0; i < MASK_LIST_SIZE; ++i)
  93         XUngrabButton(ob_display, button, state | mask_list[i], win);
  94 }
  95
  96 void grab_key(guint keycode, guint state, int keyboard_mode)
  97 {
  98     guint i;
  99
 100     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 101     xerror_occured = FALSE;
 102     for (i = 0; i < MASK_LIST_SIZE; ++i)
 103         XGrabKey(ob_display, keycode, state | mask_list[i], ob_root, FALSE,
 104                  GrabModeSync, keyboard_mode);
 105     xerror_set_ignore(FALSE);
 106     if (xerror_occured)
 107         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 108 }
 109
 110 void ungrab_all_keys()
 111 {
 112     XUngrabKey(ob_display, AnyKey, AnyModifier, ob_root);
 113 }