[mutter/wip/surface-content: 17/18] xwayland: Update the surface actor for the window on set_window_id

[Jasper St. Pierre <jstpierre src gnome org>]

commit c7925c0d07d17cf80a7d71ccdb5c86f1bd06a386
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Dec 9 13:47:55 2013 -0500

    xwayland: Update the surface actor for the window on set_window_id
    
    We need to do this for XWayland windows, since we only get the event
    telling us they're an XWayland window after the compositor knows about
    the window.

 src/compositor/compositor.c                |   12 ++++++
 src/compositor/meta-window-actor-private.h |    1 +
 src/compositor/meta-window-actor.c         |   60 ++++++++++++++++++++-------
 src/meta/compositor.h                      |    2 +
 src/wayland/meta-xwayland.c                |    3 +
 5 files changed, 62 insertions(+), 16 deletions(-)
---
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index 4f96830..19a8657 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -992,6 +992,18 @@ meta_compositor_window_opacity_changed (MetaCompositor *compositor,
   meta_window_actor_update_opacity (window_actor);
 }
 
+void
+meta_compositor_window_surface_changed (MetaCompositor *compositor,
+                                        MetaWindow     *window)
+{
+  MetaWindowActor *window_actor;
+  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
+  if (!window_actor)
+    return;
+
+  meta_window_actor_sync_surface_actor (window_actor);
+}
+
 /* Clutter makes the assumption that there is only one X window
  * per stage, which is a valid assumption to make for a generic
  * application toolkit. As such, it will ignore any events sent
diff --git a/src/compositor/meta-window-actor-private.h b/src/compositor/meta-window-actor-private.h
index 9c6a847..70c3f4b 100644
--- a/src/compositor/meta-window-actor-private.h
+++ b/src/compositor/meta-window-actor-private.h
@@ -50,6 +50,7 @@ gboolean meta_window_actor_effect_in_progress  (MetaWindowActor *self);
 void     meta_window_actor_sync_actor_geometry (MetaWindowActor *self,
                                                 gboolean         did_placement);
 void     meta_window_actor_sync_visibility     (MetaWindowActor *self);
+void     meta_window_actor_sync_surface_actor  (MetaWindowActor *self);
 void     meta_window_actor_update_shape        (MetaWindowActor *self);
 void     meta_window_actor_update_opacity      (MetaWindowActor *self);
 void     meta_window_actor_mapped              (MetaWindowActor *self);
diff --git a/src/compositor/meta-window-actor.c b/src/compositor/meta-window-actor.c
index 79fe3b1..9f43f61 100644
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -306,29 +306,60 @@ meta_window_actor_thaw (MetaWindowActor *self)
 }
 
 static void
-meta_window_actor_constructed (GObject *object)
+set_surface_actor (MetaWindowActor  *self,
+                   MetaSurfaceActor *surface)
 {
-  MetaWindowActor        *self     = META_WINDOW_ACTOR (object);
-  MetaWindowActorPrivate *priv     = self->priv;
-  MetaWindow             *window   = priv->window;
+  MetaWindowActorPrivate *priv = self->priv;
 
-  priv->screen = window->screen;
+  if (priv->surface)
+    {
+      g_object_unref (priv->surface);
+      clutter_actor_remove_child (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface));
+    }
 
-  if (!priv->surface)
+  priv->surface = surface;
+
+  if (priv->surface)
     {
-      if (window->surface)
-        priv->surface = window->surface->surface_actor;
-      else
-        priv->surface = meta_surface_actor_x11_new (window);
       g_object_ref_sink (priv->surface);
-
       clutter_actor_add_child (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface));
 
       g_signal_connect_object (priv->surface, "allocation-changed",
                                G_CALLBACK (surface_allocation_changed_notify), self, 0);
-      meta_window_actor_update_shape (self);
     }
 
+  meta_window_actor_update_shape (self);
+}
+
+void
+meta_window_actor_sync_surface_actor (MetaWindowActor *self)
+{
+  MetaWindowActorPrivate *priv = self->priv;
+  MetaWindow *window = priv->window;
+
+  MetaSurfaceActor *surface = NULL;
+
+  if (window)
+    {
+      if (window->surface)
+        surface = window->surface->surface_actor;
+      else
+        surface = meta_surface_actor_x11_new (window);
+    }
+
+  set_surface_actor (self, surface);
+}
+
+static void
+meta_window_actor_constructed (GObject *object)
+{
+  MetaWindowActor        *self     = META_WINDOW_ACTOR (object);
+  MetaWindowActorPrivate *priv     = self->priv;
+  MetaWindow             *window   = priv->window;
+
+  priv->screen = window->screen;
+
+  meta_window_actor_sync_surface_actor (self);
   meta_window_actor_update_opacity (self);
 
   /* Start off with an empty shape region to maintain the invariant
@@ -370,10 +401,7 @@ meta_window_actor_dispose (GObject *object)
 
   g_clear_object (&priv->window);
 
-  /*
-   * Release the extra reference we took on the actor.
-   */
-  g_clear_object (&priv->surface);
+  meta_window_actor_sync_surface_actor (self);
 
   G_OBJECT_CLASS (meta_window_actor_parent_class)->dispose (object);
 }
diff --git a/src/meta/compositor.h b/src/meta/compositor.h
index f3f2a7d..778561b 100644
--- a/src/meta/compositor.h
+++ b/src/meta/compositor.h
@@ -68,6 +68,8 @@ void meta_compositor_window_shape_changed (MetaCompositor *compositor,
                                            MetaWindow     *window);
 void meta_compositor_window_opacity_changed (MetaCompositor *compositor,
                                              MetaWindow     *window);
+void meta_compositor_window_surface_changed (MetaCompositor *compositor,
+                                             MetaWindow     *window);
 
 gboolean meta_compositor_process_event (MetaCompositor *compositor,
                                         XEvent         *event,
diff --git a/src/wayland/meta-xwayland.c b/src/wayland/meta-xwayland.c
index 02c5b7b..7872b05 100644
--- a/src/wayland/meta-xwayland.c
+++ b/src/wayland/meta-xwayland.c
@@ -48,6 +48,9 @@ xserver_set_window_id (struct wl_client *client,
     {
       surface->window = window;
       window->surface = surface;
+
+      if (display->compositor)
+        meta_compositor_window_surface_changed (display->compositor, window);
     }
 }