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 | PointerMotionMask)
   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 gboolean grab_keyboard(gboolean grab)
  17 {
  18     static guint kgrabs = 0;
  19     gboolean ret = FALSE;
  20
  21     if (grab) {
  22         if (kgrabs++ == 0)
  23             ret = XGrabKeyboard(ob_display, ob_root, FALSE, GrabModeAsync,
  24                                 GrabModeAsync, event_lasttime) == Success;
  25         else
  26             ret = TRUE;
  27     } else if (kgrabs > 0) {
  28         if (--kgrabs == 0)
  29             XUngrabKeyboard(ob_display, event_lasttime);
  30         ret = TRUE;
  31     }
  32     return ret;
  33 }
  34
  35 gboolean grab_pointer(gboolean grab, ObCursor cur)
  36 {
  37     static guint pgrabs = 0;
  38     gboolean ret = FALSE;
  39
  40     if (grab) {
  41         if (pgrabs++ == 0)
  42             ret = XGrabPointer(ob_display, ob_root, False, GRAB_PTR_MASK,
  43                                GrabModeAsync, GrabModeAsync, FALSE,
  44                                ob_cursor(cur),
  45                                event_lasttime) == Success;
  46         else
  47             ret = TRUE;
  48     } else if (pgrabs > 0) {
  49         if (--pgrabs == 0)
  50             XUngrabPointer(ob_display, event_lasttime);
  51         ret = TRUE;
  52     }
  53     return ret;
  54 }
  55
  56 gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
  57 {
  58     static guint pgrabs = 0;
  59     gboolean ret = FALSE;
  60
  61     if (grab) {
  62         if (pgrabs++ == 0)
  63             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
  64                                GrabModeAsync, GrabModeAsync, TRUE,
  65                                ob_cursor(cur),
  66                                event_lasttime) == Success;
  67         else
  68             ret = TRUE;
  69     } else if (pgrabs > 0) {
  70         if (--pgrabs == 0)
  71             XUngrabPointer(ob_display, event_lasttime);
  72         ret = TRUE;
  73     }
  74     return ret;
  75 }
  76
  77 int grab_server(gboolean grab)
  78 {
  79     static guint sgrabs = 0;
  80     if (grab) {
  81         if (sgrabs++ == 0) {
  82             XGrabServer(ob_display);
  83             XSync(ob_display, FALSE);
  84         }
  85     } else if (sgrabs > 0) {
  86         if (--sgrabs == 0) {
  87             XUngrabServer(ob_display);
  88             XFlush(ob_display);
  89         }
  90     }
  91     return sgrabs;
  92 }
  93
  94 void grab_startup()
  95 {
  96     guint i = 0;
  97
  98     mask_list[i++] = 0;
  99     mask_list[i++] = LockMask;
 100     mask_list[i++] = NumLockMask;
 101     mask_list[i++] = LockMask | NumLockMask;
 102     mask_list[i++] = ScrollLockMask;
 103     mask_list[i++] = ScrollLockMask | LockMask;
 104     mask_list[i++] = ScrollLockMask | NumLockMask;
 105     mask_list[i++] = ScrollLockMask | LockMask | NumLockMask;
 106     g_assert(i == MASK_LIST_SIZE);
 107 }
 108
 109 void grab_shutdown()
 110 {
 111     while (grab_keyboard(FALSE));
 112     while (grab_pointer(FALSE, None));
 113     while (grab_pointer_window(FALSE, None, None));
 114     while (grab_server(FALSE));
 115 }
 116
 117 void grab_button_full(guint button, guint state, Window win, guint mask,
 118                       int pointer_mode, ObCursor cur)
 119 {
 120     guint i;
 121
 122     for (i = 0; i < MASK_LIST_SIZE; ++i)
 123         XGrabButton(ob_display, button, state | mask_list[i], win, FALSE, mask,
 124                     pointer_mode, GrabModeSync, None, ob_cursor(cur));
 125 }
 126
 127 void grab_button(guint button, guint state, Window win, guint mask)
 128 {
 129     grab_button_full(button, state, win, mask, GrabModeAsync, None);
 130 }
 131
 132 void ungrab_button(guint button, guint state, Window win)
 133 {
 134     guint i;
 135
 136     for (i = 0; i < MASK_LIST_SIZE; ++i)
 137         XUngrabButton(ob_display, button, state | mask_list[i], win);
 138 }
 139
 140 void grab_key(guint keycode, guint state, Window win, int keyboard_mode)
 141 {
 142     guint i;
 143
 144     xerror_set_ignore(TRUE); /* can get BadAccess' from these */
 145     xerror_occured = FALSE;
 146     for (i = 0; i < MASK_LIST_SIZE; ++i)
 147         XGrabKey(ob_display, keycode, state | mask_list[i], win, FALSE,
 148                  GrabModeSync, keyboard_mode);
 149     xerror_set_ignore(FALSE);
 150     if (xerror_occured)
 151         g_warning("failed to grab keycode %d modifiers %d", keycode, state);
 152 }
 153
 154 void ungrab_all_keys(Window win)
 155 {
 156     XUngrabKey(ob_display, AnyKey, AnyModifier, win);
 157 }