Example #1
0
static gboolean
gdk_x11_device_manager_core_translate_event (GdkEventTranslator *translator,
                                             GdkDisplay         *display,
                                             GdkEvent           *event,
                                             XEvent             *xevent)
{
  GdkX11DeviceManagerCore *device_manager;
  GdkWindow *window;
  gboolean return_val;
  GdkToplevelX11 *toplevel = NULL;
  GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);

  device_manager = GDK_X11_DEVICE_MANAGER_CORE (translator);
  return_val = FALSE;

  window = get_event_window (translator, xevent);

  if (window)
    {
      if (GDK_WINDOW_DESTROYED (window) || !GDK_IS_WINDOW (window))
        return FALSE;

      toplevel = _gdk_x11_window_get_toplevel (window);
      g_object_ref (window);
    }

  event->any.window = window;
  event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;

  if (window && GDK_WINDOW_DESTROYED (window))
    {
      if (xevent->type != DestroyNotify)
        {
          return_val = FALSE;
          goto done;
        }
    }

  if (window &&
      (xevent->type == MotionNotify ||
       xevent->type == ButtonRelease))
    {
      if (_gdk_x11_moveresize_handle_event (xevent))
        {
          return_val = FALSE;
          goto done;
        }
    }

  /* We do a "manual" conversion of the XEvent to a
   *  GdkEvent. The structures are mostly the same so
   *  the conversion is fairly straightforward. We also
   *  optionally print debugging info regarding events
   *  received.
   */

  return_val = TRUE;

  switch (xevent->type)
    {
    case KeyPress:
      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }
      translate_key_event (display, device_manager, event, xevent);
      set_user_time (window, event);
      break;

    case KeyRelease:
      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* Emulate detectable auto-repeat by checking to see
       * if the next event is a key press with the same
       * keycode and timestamp, and if so, ignoring the event.
       */

      if (!display_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
        {
          XEvent next_event;

          XPeekEvent (xevent->xkey.display, &next_event);

          if (next_event.type == KeyPress &&
              next_event.xkey.keycode == xevent->xkey.keycode &&
              next_event.xkey.time == xevent->xkey.time)
            {
              return_val = FALSE;
              break;
            }
        }

      translate_key_event (display, device_manager, event, xevent);
      break;

    case ButtonPress:
      GDK_NOTE (EVENTS,
                g_message ("button press:\t\twindow: %ld  x,y: %d %d  button: %d",
                           xevent->xbutton.window,
                           xevent->xbutton.x, xevent->xbutton.y,
                           xevent->xbutton.button));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* If we get a ButtonPress event where the button is 4 or 5,
         it's a Scroll event */
      switch (xevent->xbutton.button)
        {
        case 4: /* up */
        case 5: /* down */
        case 6: /* left */
        case 7: /* right */
          event->scroll.type = GDK_SCROLL;

          if (xevent->xbutton.button == 4)
            event->scroll.direction = GDK_SCROLL_UP;
          else if (xevent->xbutton.button == 5)
            event->scroll.direction = GDK_SCROLL_DOWN;
          else if (xevent->xbutton.button == 6)
            event->scroll.direction = GDK_SCROLL_LEFT;
          else
            event->scroll.direction = GDK_SCROLL_RIGHT;

          event->scroll.window = window;
          event->scroll.time = xevent->xbutton.time;
          event->scroll.x = (gdouble) xevent->xbutton.x;
          event->scroll.y = (gdouble) xevent->xbutton.y;
          event->scroll.x_root = (gdouble) xevent->xbutton.x_root;
          event->scroll.y_root = (gdouble) xevent->xbutton.y_root;
          event->scroll.state = (GdkModifierType) xevent->xbutton.state;
          event->scroll.device = device_manager->core_pointer;

          if (!set_screen_from_root (display, event, xevent->xbutton.root))
            {
              return_val = FALSE;
              break;
            }

          break;

        default:
          event->button.type = GDK_BUTTON_PRESS;
          event->button.window = window;
          event->button.time = xevent->xbutton.time;
          event->button.x = (gdouble) xevent->xbutton.x;
          event->button.y = (gdouble) xevent->xbutton.y;
          event->button.x_root = (gdouble) xevent->xbutton.x_root;
          event->button.y_root = (gdouble) xevent->xbutton.y_root;
          event->button.axes = NULL;
          event->button.state = (GdkModifierType) xevent->xbutton.state;
          event->button.button = xevent->xbutton.button;
          event->button.device = device_manager->core_pointer;

          if (!set_screen_from_root (display, event, xevent->xbutton.root))
            return_val = FALSE;

          break;
        }

      set_user_time (window, event);

      break;

    case ButtonRelease:
      GDK_NOTE (EVENTS,
                g_message ("button release:\twindow: %ld  x,y: %d %d  button: %d",
                           xevent->xbutton.window,
                           xevent->xbutton.x, xevent->xbutton.y,
                           xevent->xbutton.button));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* We treat button presses as scroll wheel events, so ignore the release */
      if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5 ||
          xevent->xbutton.button == 6 || xevent->xbutton.button == 7)
        {
          return_val = FALSE;
          break;
        }

      event->button.type = GDK_BUTTON_RELEASE;
      event->button.window = window;
      event->button.time = xevent->xbutton.time;
      event->button.x = (gdouble) xevent->xbutton.x;
      event->button.y = (gdouble) xevent->xbutton.y;
      event->button.x_root = (gdouble) xevent->xbutton.x_root;
      event->button.y_root = (gdouble) xevent->xbutton.y_root;
      event->button.axes = NULL;
      event->button.state = (GdkModifierType) xevent->xbutton.state;
      event->button.button = xevent->xbutton.button;
      event->button.device = device_manager->core_pointer;

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        return_val = FALSE;

      break;

    case MotionNotify:
      GDK_NOTE (EVENTS,
                g_message ("motion notify:\t\twindow: %ld  x,y: %d %d  hint: %s",
                           xevent->xmotion.window,
                           xevent->xmotion.x, xevent->xmotion.y,
                           (xevent->xmotion.is_hint) ? "true" : "false"));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      event->motion.type = GDK_MOTION_NOTIFY;
      event->motion.window = window;
      event->motion.time = xevent->xmotion.time;
      event->motion.x = (gdouble) xevent->xmotion.x;
      event->motion.y = (gdouble) xevent->xmotion.y;
      event->motion.x_root = (gdouble) xevent->xmotion.x_root;
      event->motion.y_root = (gdouble) xevent->xmotion.y_root;
      event->motion.axes = NULL;
      event->motion.state = (GdkModifierType) xevent->xmotion.state;
      event->motion.is_hint = xevent->xmotion.is_hint;
      event->motion.device = device_manager->core_pointer;

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      break;

    case EnterNotify:
      GDK_NOTE (EVENTS,
                g_message ("enter notify:\t\twindow: %ld  detail: %d subwin: %ld",
                           xevent->xcrossing.window,
                           xevent->xcrossing.detail,
                           xevent->xcrossing.subwindow));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      event->crossing.type = GDK_ENTER_NOTIFY;
      event->crossing.window = window;
      gdk_event_set_device (event, device_manager->core_pointer);

      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
        event->crossing.subwindow = gdk_x11_window_lookup_for_display (display, xevent->xcrossing.subwindow);
      else
        event->crossing.subwindow = NULL;

      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = (gdouble) xevent->xcrossing.x;
      event->crossing.y = (gdouble) xevent->xcrossing.y;
      event->crossing.x_root = (gdouble) xevent->xcrossing.x_root;
      event->crossing.y_root = (gdouble) xevent->xcrossing.y_root;

      event->crossing.mode = translate_crossing_mode (xevent->xcrossing.mode);
      event->crossing.detail = translate_notify_type (xevent->xcrossing.detail);

      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;

      break;

    case LeaveNotify:
      GDK_NOTE (EVENTS,
                g_message ("leave notify:\t\twindow: %ld  detail: %d subwin: %ld",
                           xevent->xcrossing.window,
                           xevent->xcrossing.detail, xevent->xcrossing.subwindow));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      event->crossing.type = GDK_LEAVE_NOTIFY;
      event->crossing.window = window;
      gdk_event_set_device (event, device_manager->core_pointer);

      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
        event->crossing.subwindow = gdk_x11_window_lookup_for_display (display, xevent->xcrossing.subwindow);
      else
        event->crossing.subwindow = NULL;

      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = (gdouble) xevent->xcrossing.x;
      event->crossing.y = (gdouble) xevent->xcrossing.y;
      event->crossing.x_root = (gdouble) xevent->xcrossing.x_root;
      event->crossing.y_root = (gdouble) xevent->xcrossing.y_root;

      event->crossing.mode = translate_crossing_mode (xevent->xcrossing.mode);
      event->crossing.detail = translate_notify_type (xevent->xcrossing.detail);

      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;

      break;

      /* We only care about focus events that indicate that _this_
       * window (not a ancestor or child) got or lost the focus
       */
    case FocusIn:
      GDK_NOTE (EVENTS,
                g_message ("focus in:\t\twindow: %ld, detail: %s, mode: %s",
                           xevent->xfocus.window,
                           notify_details[xevent->xfocus.detail],
                           notify_modes[xevent->xfocus.mode]));

      if (toplevel)
        {
          gboolean had_focus = HAS_FOCUS (toplevel);

          switch (xevent->xfocus.detail)
            {
            case NotifyAncestor:
            case NotifyVirtual:
              /* When the focus moves from an ancestor of the window to
               * the window or a descendent of the window, *and* the
               * pointer is inside the window, then we were previously
               * receiving keystroke events in the has_pointer_focus
               * case and are now receiving them in the
               * has_focus_window case.
               */
              if (toplevel->has_pointer &&
                  xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_pointer_focus = FALSE;

              /* fall through */
            case NotifyNonlinear:
            case NotifyNonlinearVirtual:
              if (xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_focus_window = TRUE;
              /* We pretend that the focus moves to the grab
               * window, so we pay attention to NotifyGrab
               * NotifyUngrab, and ignore NotifyWhileGrabbed
               */
              if (xevent->xfocus.mode != NotifyWhileGrabbed)
                toplevel->has_focus = TRUE;
              break;
            case NotifyPointer:
              /* The X server sends NotifyPointer/NotifyGrab,
               * but the pointer focus is ignored while a
               * grab is in effect
               */
              if (xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_pointer_focus = TRUE;
              break;
            case NotifyInferior:
            case NotifyPointerRoot:
            case NotifyDetailNone:
              break;
            }

          if (HAS_FOCUS (toplevel) != had_focus)
            generate_focus_event (device_manager, window, TRUE);
        }
      break;
    case FocusOut:
      GDK_NOTE (EVENTS,
                g_message ("focus out:\t\twindow: %ld, detail: %s, mode: %s",
                           xevent->xfocus.window,
                           notify_details[xevent->xfocus.detail],
                           notify_modes[xevent->xfocus.mode]));

      if (toplevel)
        {
          gboolean had_focus = HAS_FOCUS (toplevel);

          switch (xevent->xfocus.detail)
            {
            case NotifyAncestor:
            case NotifyVirtual:
              /* When the focus moves from the window or a descendent
               * of the window to an ancestor of the window, *and* the
               * pointer is inside the window, then we were previously
               * receiving keystroke events in the has_focus_window
               * case and are now receiving them in the
               * has_pointer_focus case.
               */
              if (toplevel->has_pointer &&
                  xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_pointer_focus = TRUE;

              /* fall through */
            case NotifyNonlinear:
            case NotifyNonlinearVirtual:
              if (xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_focus_window = FALSE;
              if (xevent->xfocus.mode != NotifyWhileGrabbed)
                toplevel->has_focus = FALSE;
              break;
            case NotifyPointer:
              if (xevent->xfocus.mode != NotifyGrab &&
                  xevent->xfocus.mode != NotifyUngrab)
                toplevel->has_pointer_focus = FALSE;
            break;
            case NotifyInferior:
            case NotifyPointerRoot:
            case NotifyDetailNone:
              break;
            }

          if (HAS_FOCUS (toplevel) != had_focus)
            generate_focus_event (device_manager, window, FALSE);
        }
      break;

    default:
        return_val = FALSE;
    }

 done:
  if (return_val)
    {
      if (event->any.window)
        g_object_ref (event->any.window);

      if (((event->any.type == GDK_ENTER_NOTIFY) ||
           (event->any.type == GDK_LEAVE_NOTIFY)) &&
          (event->crossing.subwindow != NULL))
        g_object_ref (event->crossing.subwindow);
    }
  else
    {
      /* Mark this event as having no resources to be freed */
      event->any.window = NULL;
      event->any.type = GDK_NOTHING;
    }

  if (window)
    g_object_unref (window);

  return return_val;
}
Example #2
0
static gboolean
gdk_x11_device_manager_core_translate_event (GdkEventTranslator *translator,
                                             GdkDisplay         *display,
                                             GdkEvent           *event,
                                             XEvent             *xevent)
{
  GdkWindowImplX11 *impl;
  GdkX11DeviceManagerCore *device_manager;
  GdkWindow *window;
  gboolean return_val;
  int scale;
  GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);

  device_manager = GDK_X11_DEVICE_MANAGER_CORE (translator);

  window = get_event_window (translator, xevent);

  scale = 1;
  if (window)
    {
      if (GDK_WINDOW_DESTROYED (window) || !GDK_IS_WINDOW (window))
        return FALSE;

      g_object_ref (window);
      impl = GDK_WINDOW_IMPL_X11 (window->impl);
      scale = impl->window_scale;
    }

  event->any.window = window;
  event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;

  if (window && GDK_WINDOW_DESTROYED (window))
    {
      if (xevent->type != DestroyNotify)
        {
          return_val = FALSE;
          goto done;
        }
    }

  if (window &&
      (xevent->type == MotionNotify ||
       xevent->type == ButtonRelease))
    {
      if (_gdk_x11_moveresize_handle_event (xevent))
        {
          return_val = FALSE;
          goto done;
        }
    }

  /* We do a "manual" conversion of the XEvent to a
   *  GdkEvent. The structures are mostly the same so
   *  the conversion is fairly straightforward. We also
   *  optionally print debugging info regarding events
   *  received.
   */

  return_val = TRUE;

  switch (xevent->type)
    {
    case KeyPress:
      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }
      translate_key_event (display, device_manager, event, xevent);
      set_user_time (window, event);
      break;

    case KeyRelease:
      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* Emulate detectable auto-repeat by checking to see
       * if the next event is a key press with the same
       * keycode and timestamp, and if so, ignoring the event.
       */

      if (!display_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
        {
          XEvent next_event;

          XPeekEvent (xevent->xkey.display, &next_event);

          if (next_event.type == KeyPress &&
              next_event.xkey.keycode == xevent->xkey.keycode &&
              next_event.xkey.time == xevent->xkey.time)
            {
              return_val = FALSE;
              break;
            }
        }

      translate_key_event (display, device_manager, event, xevent);
      break;

    case ButtonPress:
      GDK_NOTE (EVENTS,
                g_message ("button press:\t\twindow: %ld  x,y: %d %d  button: %d",
                           xevent->xbutton.window,
                           xevent->xbutton.x, xevent->xbutton.y,
                           xevent->xbutton.button));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* If we get a ButtonPress event where the button is 4 or 5,
         it's a Scroll event */
      switch (xevent->xbutton.button)
        {
        case 4: /* up */
        case 5: /* down */
        case 6: /* left */
        case 7: /* right */
          event->scroll.type = GDK_SCROLL;

          if (xevent->xbutton.button == 4)
            event->scroll.direction = GDK_SCROLL_UP;
          else if (xevent->xbutton.button == 5)
            event->scroll.direction = GDK_SCROLL_DOWN;
          else if (xevent->xbutton.button == 6)
            event->scroll.direction = GDK_SCROLL_LEFT;
          else
            event->scroll.direction = GDK_SCROLL_RIGHT;

          event->scroll.window = window;
          event->scroll.time = xevent->xbutton.time;
          event->scroll.x = (gdouble) xevent->xbutton.x / scale;
          event->scroll.y = (gdouble) xevent->xbutton.y / scale;
          event->scroll.x_root = (gdouble) xevent->xbutton.x_root / scale;
          event->scroll.y_root = (gdouble) xevent->xbutton.y_root / scale;
          event->scroll.state = (GdkModifierType) xevent->xbutton.state;
          event->scroll.device = device_manager->core_pointer;

          event->scroll.delta_x = 0;
          event->scroll.delta_y = 0;

          if (!set_screen_from_root (display, event, xevent->xbutton.root))
            {
              return_val = FALSE;
              break;
            }

          break;

        default:
          event->button.type = GDK_BUTTON_PRESS;
          event->button.window = window;
          event->button.time = xevent->xbutton.time;
          event->button.x = (gdouble) xevent->xbutton.x / scale;
          event->button.y = (gdouble) xevent->xbutton.y / scale;
          event->button.x_root = (gdouble) xevent->xbutton.x_root / scale;
          event->button.y_root = (gdouble) xevent->xbutton.y_root / scale;
          event->button.axes = NULL;
          event->button.state = (GdkModifierType) xevent->xbutton.state;
          event->button.button = xevent->xbutton.button;
          event->button.device = device_manager->core_pointer;

          if (!set_screen_from_root (display, event, xevent->xbutton.root))
            return_val = FALSE;

          break;
        }

      set_user_time (window, event);

      break;

    case ButtonRelease:
      GDK_NOTE (EVENTS,
                g_message ("button release:\twindow: %ld  x,y: %d %d  button: %d",
                           xevent->xbutton.window,
                           xevent->xbutton.x, xevent->xbutton.y,
                           xevent->xbutton.button));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      /* We treat button presses as scroll wheel events, so ignore the release */
      if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5 ||
          xevent->xbutton.button == 6 || xevent->xbutton.button == 7)
        {
          return_val = FALSE;
          break;
        }

      event->button.type = GDK_BUTTON_RELEASE;
      event->button.window = window;
      event->button.time = xevent->xbutton.time;
      event->button.x = (gdouble) xevent->xbutton.x / scale;
      event->button.y = (gdouble) xevent->xbutton.y / scale;
      event->button.x_root = (gdouble) xevent->xbutton.x_root / scale;
      event->button.y_root = (gdouble) xevent->xbutton.y_root / scale;
      event->button.axes = NULL;
      event->button.state = (GdkModifierType) xevent->xbutton.state;
      event->button.button = xevent->xbutton.button;
      event->button.device = device_manager->core_pointer;

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        return_val = FALSE;

      break;

    case MotionNotify:
      GDK_NOTE (EVENTS,
                g_message ("motion notify:\t\twindow: %ld  x,y: %d %d  hint: %s",
                           xevent->xmotion.window,
                           xevent->xmotion.x, xevent->xmotion.y,
                           (xevent->xmotion.is_hint) ? "true" : "false"));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      event->motion.type = GDK_MOTION_NOTIFY;
      event->motion.window = window;
      event->motion.time = xevent->xmotion.time;
      event->motion.x = (gdouble) xevent->xmotion.x / scale;
      event->motion.y = (gdouble) xevent->xmotion.y / scale;
      event->motion.x_root = (gdouble) xevent->xmotion.x_root / scale;
      event->motion.y_root = (gdouble) xevent->xmotion.y_root / scale;
      event->motion.axes = NULL;
      event->motion.state = (GdkModifierType) xevent->xmotion.state;
      event->motion.is_hint = xevent->xmotion.is_hint;
      event->motion.device = device_manager->core_pointer;

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      break;

    case EnterNotify:
      GDK_NOTE (EVENTS,
                g_message ("enter notify:\t\twindow: %ld  detail: %d subwin: %ld",
                           xevent->xcrossing.window,
                           xevent->xcrossing.detail,
                           xevent->xcrossing.subwindow));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      event->crossing.type = GDK_ENTER_NOTIFY;
      event->crossing.window = window;
      gdk_event_set_device (event, device_manager->core_pointer);

      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
        event->crossing.subwindow = gdk_x11_window_lookup_for_display (display, xevent->xcrossing.subwindow);
      else
        event->crossing.subwindow = NULL;

      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = (gdouble) xevent->xcrossing.x / scale;
      event->crossing.y = (gdouble) xevent->xcrossing.y / scale;
      event->crossing.x_root = (gdouble) xevent->xcrossing.x_root / scale;
      event->crossing.y_root = (gdouble) xevent->xcrossing.y_root / scale;

      event->crossing.mode = translate_crossing_mode (xevent->xcrossing.mode);
      event->crossing.detail = translate_notify_type (xevent->xcrossing.detail);

      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;

      break;

    case LeaveNotify:
      GDK_NOTE (EVENTS,
                g_message ("leave notify:\t\twindow: %ld  detail: %d subwin: %ld",
                           xevent->xcrossing.window,
                           xevent->xcrossing.detail, xevent->xcrossing.subwindow));

      if (window == NULL)
        {
          return_val = FALSE;
          break;
        }

      if (!set_screen_from_root (display, event, xevent->xbutton.root))
        {
          return_val = FALSE;
          break;
        }

      event->crossing.type = GDK_LEAVE_NOTIFY;
      event->crossing.window = window;
      gdk_event_set_device (event, device_manager->core_pointer);

      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
        event->crossing.subwindow = gdk_x11_window_lookup_for_display (display, xevent->xcrossing.subwindow);
      else
        event->crossing.subwindow = NULL;

      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = (gdouble) xevent->xcrossing.x / scale;
      event->crossing.y = (gdouble) xevent->xcrossing.y / scale;
      event->crossing.x_root = (gdouble) xevent->xcrossing.x_root / scale;
      event->crossing.y_root = (gdouble) xevent->xcrossing.y_root / scale;

      event->crossing.mode = translate_crossing_mode (xevent->xcrossing.mode);
      event->crossing.detail = translate_notify_type (xevent->xcrossing.detail);

      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;

      break;

    case FocusIn:
    case FocusOut:
      if (window)
        _gdk_device_manager_core_handle_focus (window,
                                               xevent->xfocus.window,
                                               device_manager->core_keyboard,
                                               NULL,
                                               xevent->type == FocusIn,
                                               xevent->xfocus.detail,
                                               xevent->xfocus.mode);
      return_val = FALSE;
      break;
                                              
    default:
        return_val = FALSE;
    }

 done:
  if (return_val)
    {
      if (event->any.window)
        g_object_ref (event->any.window);

      if (((event->any.type == GDK_ENTER_NOTIFY) ||
           (event->any.type == GDK_LEAVE_NOTIFY)) &&
          (event->crossing.subwindow != NULL))
        g_object_ref (event->crossing.subwindow);
    }
  else
    {
      /* Mark this event as having no resources to be freed */
      event->any.window = NULL;
      event->any.type = GDK_NOTHING;
    }

  if (window)
    g_object_unref (window);

  return return_val;
}