[clutter] wayland: Only process enter and leave events Clutter created surfaces

[Rob Bradford <rbradford src gnome org>]

commit b6a931c8d9aefece78866f3f5fab0c9131fa0fc4
Author: Rob Bradford <rob linux intel com>
Date:   Sun Aug 4 15:38:40 2013 +0100

    wayland: Only process enter and leave events Clutter created surfaces
    
    When combining with GTK we will receive enter and leave events for surfaces
    from both toolkits therefore we must filter our events appropriately.

 clutter/wayland/clutter-input-device-wayland.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/clutter/wayland/clutter-input-device-wayland.c b/clutter/wayland/clutter-input-device-wayland.c
index fbfaf11..05331d9 100644
--- a/clutter/wayland/clutter-input-device-wayland.c
+++ b/clutter/wayland/clutter-input-device-wayland.c
@@ -356,6 +356,9 @@ clutter_wayland_handle_pointer_enter (void *data,
   ClutterBackend            *backend;
   ClutterBackendWayland     *backend_wayland;
 
+  if (!CLUTTER_IS_STAGE_COGL (wl_surface_get_user_data (surface)))
+    return;
+
   stage_cogl = wl_surface_get_user_data (surface);
 
   device->pointer_focus = stage_cogl;
@@ -407,6 +410,9 @@ clutter_wayland_handle_pointer_leave (void *data,
   ClutterStageCogl          *stage_cogl;
   ClutterEvent              *event;
 
+  if (!CLUTTER_IS_STAGE_COGL (wl_surface_get_user_data (surface)))
+    return;
+
   stage_cogl = wl_surface_get_user_data (surface);
   g_assert (device->pointer_focus == stage_cogl);
 
@@ -434,6 +440,9 @@ clutter_wayland_handle_keyboard_enter (void *data,
   ClutterInputDeviceWayland *device = data;
   ClutterStageCogl          *stage_cogl;
 
+  if (!CLUTTER_IS_STAGE_COGL (wl_surface_get_user_data (surface)))
+    return;
+
   stage_cogl = wl_surface_get_user_data (surface);
   g_assert (device->keyboard_focus == NULL);
   device->keyboard_focus = stage_cogl;
@@ -452,6 +461,11 @@ clutter_wayland_handle_keyboard_leave (void *data,
   ClutterInputDeviceWayland *device = data;
   ClutterStageCogl          *stage_cogl;
 
+  if (!surface)
+    return;
+  if (!CLUTTER_IS_STAGE_COGL (wl_surface_get_user_data (surface)))
+    return;
+
   stage_cogl = wl_surface_get_user_data (surface);
   g_assert (device->keyboard_focus == stage_cogl);