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             g_message("GRABBING KEYBOARD %d", kgrabs);
  20             XGrabKeyboard(ob_display, ob_root, 0, GrabModeAsync, GrabModeSync,
  21                           event_lasttime);
  22         } else
  23             g_message("NOT GRABBING KEYBOARD %d", kgrabs);
  24     } else if (kgrabs > 0) {
  25         if (--kgrabs == 0) {
  26             g_message("UNGRABBING KEYBOARD %d", kgrabs);
  27             XUngrabKeyboard(ob_display, event_lasttime);
  28         } else
  29             g_message("NOT UNGRABBING KEYBOARD %d", kgrabs);
  30     }
  31 }
  32
  33 void grab_pointer(gboolean grab, Cursor cur)
  34 {
  35     if (grab) {
  36         if (pgrabs++ == 0)
  37             XGrabPointer(ob_display, ob_root, False, 0, GrabModeAsync,
  38                          GrabModeAsync, FALSE, cur, event_lasttime);
  39     } else if (pgrabs > 0) {
  40         if (--pgrabs == 0)
  41             XUngrabPointer(ob_display, event_lasttime);
  42     }
  43 }
  44
  45 void grab_server(gboolean grab)
  46 {
  47     if (grab) {
  48         if (sgrabs++ == 0) {
  49             XGrabServer(ob_display);
  50             XSync(ob_display, FALSE);
  51         }
  52     } else if (sgrabs > 0) {
  53         if (--sgrabs == 0) {
  54             XUngrabServer(ob_display);
  55             XFlush(ob_display);
  56         }
  57     }
  58 }
  59
  60 void grab_startup()
  61 {
  62     guint i = 0;
  63
  64     kgrabs = pgrabs = sgrabs = 0;
  65
  66     mask_list[i++] = 0;
  67     mask_list[i++] = LockMask;
  68     mask_list[i++] = NumLockMask;
  69     mask_list[i++] = LockMask | NumLockMask;
  70     mask_list[i++] = ScrollLockMask;
  71     mask_list[i++] = ScrollLockMask | LockMask;
  72     mask_list[i++] = ScrollLockMask | NumLockMask;
  73     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
  74     g_assert(i == MASK_LIST_SIZE);
  75 }
  76
  77 void grab_shutdown()
  78 {
  79     while (kgrabs) grab_keyboard(FALSE);
  80     while (pgrabs) grab_pointer(FALSE, None);
  81     while (sgrabs) grab_server(FALSE);
  82 }
  83
  84 void grab_button(guint button, guint state, Window win, guint mask,
  85                  int pointer_mode)
  86 {
  87     guint i;
  88
  89     for (i = 0; i < MASK_LIST_SIZE; ++i)
  90         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
  91                     pointer_mode, GrabModeAsync, None, None);
  92 }
  93
  94 void ungrab_button(guint button, guint state, Window win)
  95 {
  96     guint i;
  97
  98     for (i = 0; i < MASK_LIST_SIZE; ++i)
  99         XUngrabButton(ob_display, button, state | mask_list[i], win);
 100 }
 101
 102 void grab_key(guint keycode, guint state, int keyboard_mode)
 103 {
 104     guint i;
 105
 106     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 107     xerror_occured = FALSE;
 108     for (i = 0; i < MASK_LIST_SIZE; ++i)
 109         XGrabKey(ob_display, keycode, state | mask_list[i], ob_root, FALSE,
 110                  GrabModeAsync, keyboard_mode);
 111     xerror_set_ignore(FALSE);
 112     if (xerror_occured)
 113         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 114 }
 115
 116 void ungrab_all_keys()
 117 {
 118     XUngrabKey(ob_display, AnyKey, AnyModifier, ob_root);
 119 }