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