window-actor: Don't do any special initialization in _new

https://bugzilla.gnome.org/show_bug.cgi?id=678989

src/compositor/compositor.c

@@ -150,10 +150,28 @@ add_win (MetaWindow *window)
 {
   MetaScreen		*screen = meta_window_get_screen (window);
   MetaCompScreen        *info = meta_screen_get_compositor_data (screen);
+  MetaWindowActor       *actor;
+  ClutterActor          *window_group;
 
   g_return_if_fail (info != NULL);
 
-  meta_window_actor_new (window);
+  actor = meta_window_actor_new (window);
+
+  window->core_actor = actor;
+
+  if (window->layer == META_LAYER_OVERRIDE_REDIRECT)
+    window_group = info->top_window_group;
+  else
+    window_group = info->window_group;
+  clutter_actor_add_child (window_group, CLUTTER_ACTOR (actor));
+
+  clutter_actor_set_reactive (CLUTTER_ACTOR (actor), TRUE);
+  clutter_actor_hide (CLUTTER_ACTOR (actor));
+
+  /* Initial position in the stack is arbitrary; stacking will be synced
+   * before we first paint.
+   */
+  info->windows = g_list_append (info->windows, actor);
 
   sync_actor_stacking (info);
 }
@@ -163,16 +181,13 @@ process_damage (MetaCompositor     *compositor,
                 XDamageNotifyEvent *event,
                 MetaWindow         *window)
 {
-  MetaWindowActor *window_actor;
+  GSList *iter;
 
   if (window == NULL)
     return;
 
-  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  if (window_actor == NULL)
-    return;
-
-  meta_window_actor_process_damage (window_actor, event);
+  for (iter = window->actors; iter != NULL; iter = iter->next)
+    meta_window_actor_process_damage (META_WINDOW_ACTOR (iter->data), event);
 }
 
 static void
@@ -180,24 +195,12 @@ process_property_notify (MetaCompositor	*compositor,
                          XPropertyEvent *event,
                          MetaWindow     *window)
 {
-  MetaWindowActor *window_actor;
-
-  if (window == NULL)
-    return;
-
-  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  if (window_actor == NULL)
+  if (window == NULL || window->core_actor == NULL)
     return;
 
   /* Check for the opacity changing */
   if (event->atom == compositor->atom_net_wm_window_opacity)
-    {
-      meta_window_actor_update_opacity (window_actor);
-      DEBUG_TRACE ("process_property_notify: net_wm_window_opacity\n");
-      return;
-    }
-
-  DEBUG_TRACE ("process_property_notify: unknown\n");
+    meta_window_actor_update_opacity (window->core_actor);
 }
 
 static Window
@@ -789,27 +792,30 @@ void
 meta_compositor_remove_window (MetaCompositor *compositor,
                                MetaWindow     *window)
 {
-  MetaWindowActor         *window_actor     = NULL;
   MetaScreen *screen;
   MetaCompScreen *info;
+  GSList *iter;
 
   DEBUG_TRACE ("meta_compositor_remove_window\n");
-  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  if (!window_actor)
-    return;
 
   screen = meta_window_get_screen (window);
   info = meta_screen_get_compositor_data (screen);
 
-  if (window_actor == info->unredirected_window)
+  if (window->core_actor == info->unredirected_window)
     {
-      meta_window_actor_set_redirected (window_actor, TRUE);
-      meta_shape_cow_for_window (meta_window_get_screen (meta_window_actor_get_meta_window (info->unredirected_window)),
-                                 NULL);
+      meta_window_actor_set_redirected (info->unredirected_window, TRUE);
+      meta_shape_cow_for_window (meta_window_get_screen (window), NULL);
       info->unredirected_window = NULL;
     }
 
-  meta_window_actor_destroy (window_actor);
+  window->core_actor = NULL;
+
+  for (iter = window->actors; iter != NULL; iter = iter->next)
+    {
+      MetaWindowActor *actor = META_WINDOW_ACTOR (iter->data);
+      meta_window_actor_destroy (actor);
+      info->windows = g_list_remove (info->windows, (gconstpointer) actor);
+    }
 }
 
 void
@@ -869,12 +875,10 @@ void
 meta_compositor_window_shape_changed (MetaCompositor *compositor,
                                       MetaWindow     *window)
 {
-  MetaWindowActor *window_actor;
-  window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  if (!window_actor)
-    return;
+  GSList *iter;
 
-  meta_window_actor_update_shape (window_actor);
+  for (iter = window->actors; iter != NULL; iter = iter->next)
+    meta_window_actor_update_shape (META_WINDOW_ACTOR (iter->data));
 }
 
 /* Clutter makes the assumption that there is only one X window
@@ -1037,12 +1041,8 @@ meta_compositor_show_window (MetaCompositor *compositor,
 			     MetaWindow	    *window,
                              MetaCompEffect  effect)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_show_window\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_show (window_actor, effect);
+  if (window->core_actor != NULL)
+    meta_window_actor_show (window->core_actor, effect);
 }
 
 void
@@ -1050,12 +1050,8 @@ meta_compositor_hide_window (MetaCompositor *compositor,
                              MetaWindow     *window,
                              MetaCompEffect  effect)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_hide_window\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_hide (window_actor, effect);
+  if (window->core_actor != NULL)
+    meta_window_actor_hide (window->core_actor, effect);
 }
 
 void
@@ -1064,12 +1060,8 @@ meta_compositor_maximize_window (MetaCompositor    *compositor,
 				 MetaRectangle	   *old_rect,
 				 MetaRectangle	   *new_rect)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_maximize_window\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_maximize (window_actor, old_rect, new_rect);
+  if (window->core_actor != NULL)
+    meta_window_actor_maximize (window->core_actor, old_rect, new_rect);
 }
 
 void
@@ -1078,12 +1070,8 @@ meta_compositor_unmaximize_window (MetaCompositor    *compositor,
 				   MetaRectangle     *old_rect,
 				   MetaRectangle     *new_rect)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_unmaximize_window\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_unmaximize (window_actor, old_rect, new_rect);
+  if (window->core_actor != NULL)
+    meta_window_actor_unmaximize (window->core_actor, old_rect, new_rect);
 }
 
 void
@@ -1259,7 +1247,7 @@ meta_compositor_sync_stack (MetaCompositor  *compositor,
       while (stack)
         {
           stack_window = stack->data;
-          stack_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (stack_window));
+          stack_actor = stack_window->core_actor;
           if (!stack_actor)
             {
               meta_verbose ("Failed to find corresponding MetaWindowActor "
@@ -1308,24 +1296,16 @@ void
 meta_compositor_window_mapped (MetaCompositor *compositor,
                                MetaWindow     *window)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_window_mapped\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_mapped (window_actor);
+  if (window->core_actor != NULL)
+    meta_window_actor_mapped (window->core_actor);
 }
 
 void
 meta_compositor_window_unmapped (MetaCompositor *compositor,
                                  MetaWindow     *window)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  DEBUG_TRACE ("meta_compositor_window_unmapped\n");
-  if (!window_actor)
-    return;
-
-  meta_window_actor_unmapped (window_actor);
+  if (window->core_actor != NULL)
+    meta_window_actor_unmapped (window->core_actor);
 }
 
 void
@@ -1333,17 +1313,8 @@ meta_compositor_sync_window_geometry (MetaCompositor *compositor,
 				      MetaWindow *window,
                                       gboolean did_placement)
 {
-  MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (window));
-  MetaScreen      *screen = meta_window_get_screen (window);
-  MetaCompScreen  *info = meta_screen_get_compositor_data (screen);
-
-  DEBUG_TRACE ("meta_compositor_sync_window_geometry\n");
-  g_return_if_fail (info);
-
-  if (!window_actor)
-    return;
-
-  meta_window_actor_sync_actor_geometry (window_actor, did_placement);
+  if (window->core_actor != NULL)
+    meta_window_actor_sync_actor_geometry (window->core_actor, did_placement);
 }
 
 void

src/compositor/meta-window-actor.c

@@ -34,19 +34,11 @@
 #include "monitor-private.h"
 #include "meta-cullable.h"
 
-enum {
-  POSITION_CHANGED,
-  SIZE_CHANGED,
-  LAST_SIGNAL
-};
-
-static guint signals[LAST_SIGNAL] = {0};
-
+static void meta_window_actor_queue_create_pixmap (MetaWindowActor *self);
 
 struct _MetaWindowActorPrivate
 {
   MetaWindow       *window;
-  Window            xwindow;
   MetaScreen       *screen;
 
   ClutterActor     *actor;
@@ -155,8 +147,6 @@ struct _FrameData
 enum
 {
   PROP_META_WINDOW = 1,
-  PROP_META_SCREEN,
-  PROP_X_WINDOW,
   PROP_NO_SHADOW,
   PROP_SHADOW_CLASS
 };
@@ -225,33 +215,12 @@ meta_window_actor_class_init (MetaWindowActorClass *klass)
                                "MetaWindow",
                                "The displayed MetaWindow",
                                META_TYPE_WINDOW,
-                               G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
+                               G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
 
   g_object_class_install_property (object_class,
                                    PROP_META_WINDOW,
                                    pspec);
 
-  pspec = g_param_spec_pointer ("meta-screen",
-				"MetaScreen",
-				"MetaScreen",
-				G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
-
-  g_object_class_install_property (object_class,
-                                   PROP_META_SCREEN,
-                                   pspec);
-
-  pspec = g_param_spec_ulong ("x-window",
-			      "Window",
-			      "Window",
-			      0,
-			      G_MAXULONG,
-			      0,
-			      G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
-
-  g_object_class_install_property (object_class,
-                                   PROP_X_WINDOW,
-                                   pspec);
-
   pspec = g_param_spec_boolean ("no-shadow",
                                 "No shadow",
                                 "Do not add shaddow to this window",
@@ -271,19 +240,6 @@ meta_window_actor_class_init (MetaWindowActorClass *klass)
   g_object_class_install_property (object_class,
                                    PROP_SHADOW_CLASS,
                                    pspec);
-
-  signals[POSITION_CHANGED] =
-    g_signal_new ("position-changed",
-                  G_TYPE_FROM_CLASS (klass),
-                  G_SIGNAL_RUN_LAST,
-                  0, NULL, NULL, NULL,
-                  G_TYPE_NONE, 0);
-  signals[SIZE_CHANGED] =
-    g_signal_new ("size-changed",
-                  G_TYPE_FROM_CLASS (klass),
-                  G_SIGNAL_RUN_LAST,
-                  0, NULL, NULL, NULL,
-                  G_TYPE_NONE, 0);
 }
 
 static void
@@ -296,6 +252,9 @@ meta_window_actor_init (MetaWindowActor *self)
 						   MetaWindowActorPrivate);
   priv->opacity = 0xff;
   priv->shadow_class = NULL;
+
+  priv->last_width = -1;
+  priv->last_height = -1;
 }
 
 static void
@@ -305,11 +264,9 @@ window_decorated_notify (MetaWindow *mw,
 {
   MetaWindowActor        *self     = META_WINDOW_ACTOR (data);
   MetaWindowActorPrivate *priv     = self->priv;
-  MetaFrame              *frame    = meta_window_get_frame (mw);
   MetaScreen             *screen   = priv->screen;
   MetaDisplay            *display  = meta_screen_get_display (screen);
   Display                *xdisplay = meta_display_get_xdisplay (display);
-  Window                  new_xwindow;
 
   /*
    * Basically, we have to reconstruct the the internals of this object
@@ -317,11 +274,6 @@ window_decorated_notify (MetaWindow *mw,
    */
   priv->redecorating = TRUE;
 
-  if (frame)
-    new_xwindow = meta_frame_get_xwindow (frame);
-  else
-    new_xwindow = meta_window_get_xwindow (mw);
-
   meta_window_actor_detach (self);
 
   /*
@@ -336,7 +288,7 @@ window_decorated_notify (MetaWindow *mw,
       priv->damage = None;
     }
 
-  priv->xwindow = new_xwindow;
+  priv->xwindow = meta_window_get_toplevel_xwindow (priv->window);
 
   /*
    * Recreate the contents.
@@ -357,13 +309,16 @@ meta_window_actor_constructed (GObject *object)
 {
   MetaWindowActor        *self     = META_WINDOW_ACTOR (object);
   MetaWindowActorPrivate *priv     = self->priv;
-  MetaScreen             *screen   = priv->screen;
-  MetaDisplay            *display  = meta_screen_get_display (screen);
-  Window                  xwindow  = priv->xwindow;
   MetaWindow             *window   = priv->window;
+  MetaScreen             *screen   = meta_window_get_screen (window);
+  MetaDisplay            *display  = meta_screen_get_display (screen);
   Display                *xdisplay = meta_display_get_xdisplay (display);
   XRenderPictFormat      *format;
+  Window                  xwindow;
 
+  xwindow = meta_window_get_toplevel_xwindow (window);
+
+  priv->screen = screen;
   priv->damage = XDamageCreate (xdisplay, xwindow,
                                 XDamageReportBoundingBox);
 
@@ -392,20 +347,28 @@ meta_window_actor_constructed (GObject *object)
       g_signal_connect_object (window, "notify::appears-focused",
                                G_CALLBACK (window_appears_focused_notify), self, 0);
     }
-  else
-    {
-      /*
-       * This is the case where existing window is gaining/loosing frame.
-       * Just ensure the actor is top most (i.e., above shadow).
-       */
-      clutter_actor_set_child_above_sibling (CLUTTER_ACTOR (self), priv->actor, NULL);
-    }
 
   meta_window_actor_update_opacity (self);
+  meta_window_actor_sync_actor_position (self);
+
+  priv->mapped = meta_window_toplevel_is_mapped (priv->window);
+  if (priv->mapped)
+    meta_window_actor_queue_create_pixmap (self);
+
+  meta_window_actor_set_updates_frozen (self,
+                                        meta_window_updates_are_frozen (priv->window));
+
+  /* If a window doesn't start off with updates frozen, we should
+   * we should send a _NET_WM_FRAME_DRAWN immediately after the first drawn.
+   */
+  if (priv->window->extended_sync_request_counter && !priv->updates_frozen)
+    meta_window_actor_queue_frame_drawn (self, FALSE);
 
   /* Start off with an empty region to maintain the invariant that
      the shape region is always set */
   priv->shape_region = cairo_region_create ();
+
+  G_OBJECT_CLASS (meta_window_actor_parent_class)->constructed (object);
 }
 
 static void
@@ -416,7 +379,6 @@ meta_window_actor_dispose (GObject *object)
   MetaScreen             *screen;
   MetaDisplay            *display;
   Display                *xdisplay;
-  MetaCompScreen         *info;
 
   if (priv->disposed)
     return;
@@ -426,7 +388,6 @@ meta_window_actor_dispose (GObject *object)
   screen   = priv->screen;
   display  = meta_screen_get_display (screen);
   xdisplay = meta_display_get_xdisplay (display);
-  info     = meta_screen_get_compositor_data (screen);
 
   meta_window_actor_detach (self);
 
@@ -456,8 +417,6 @@ meta_window_actor_dispose (GObject *object)
       priv->damage = None;
     }
 
-  info->windows = g_list_remove (info->windows, (gconstpointer) self);
-
   g_clear_object (&priv->window);
 
   /*
@@ -491,17 +450,7 @@ meta_window_actor_set_property (GObject      *object,
   switch (prop_id)
     {
     case PROP_META_WINDOW:
-      {
-        if (priv->window)
-          g_object_unref (priv->window);
-        priv->window = g_value_dup_object (value);
-      }
-      break;
-    case PROP_META_SCREEN:
-      priv->screen = g_value_get_pointer (value);
-      break;
-    case PROP_X_WINDOW:
-      priv->xwindow = g_value_get_ulong (value);
+      priv->window = g_value_dup_object (value);
       break;
     case PROP_NO_SHADOW:
       {
@@ -547,12 +496,6 @@ meta_window_actor_get_property (GObject      *object,
     case PROP_META_WINDOW:
       g_value_set_object (value, priv->window);
       break;
-    case PROP_META_SCREEN:
-      g_value_set_pointer (value, priv->screen);
-      break;
-    case PROP_X_WINDOW:
-      g_value_set_ulong (value, priv->xwindow);
-      break;
     case PROP_NO_SHADOW:
       g_value_set_boolean (value, priv->no_shadow);
       break;
@@ -820,20 +763,6 @@ meta_window_actor_has_shadow (MetaWindowActor *self)
   return FALSE;
 }
 
-/**
- * meta_window_actor_get_x_window: (skip)
- * @self: a #MetaWindowActor
- *
- */
-Window
-meta_window_actor_get_x_window (MetaWindowActor *self)
-{
-  if (!self)
-    return None;
-
-  return self->priv->xwindow;
-}
-
 /**
  * meta_window_actor_get_meta_window:
  * @self: a #MetaWindowActor
@@ -876,59 +805,6 @@ meta_window_actor_is_destroyed (MetaWindowActor *self)
   return self->priv->disposed;
 }
 
-gboolean
-meta_window_actor_is_override_redirect (MetaWindowActor *self)
-{
-  return meta_window_is_override_redirect (self->priv->window);
-}
-
-/**
- * meta_window_actor_get_workspace:
- * @self: #MetaWindowActor
- *
- * Returns the index of workspace on which this window is located; if the
- * window is sticky, or is not currently located on any workspace, returns -1.
- * This function is deprecated  and should not be used in newly written code;
- * meta_window_get_workspace() instead.
- *
- * Return value: (transfer none): index of workspace on which this window is
- * located.
- */
-gint
-meta_window_actor_get_workspace (MetaWindowActor *self)
-{
-  MetaWindowActorPrivate *priv;
-  MetaWorkspace          *workspace;
-
-  if (!self)
-    return -1;
-
-  priv = self->priv;
-
-  if (!priv->window || meta_window_is_on_all_workspaces (priv->window))
-    return -1;
-
-  workspace = meta_window_get_workspace (priv->window);
-
-  if (!workspace)
-    return -1;
-
-  return meta_workspace_index (workspace);
-}
-
-gboolean
-meta_window_actor_showing_on_its_workspace (MetaWindowActor *self)
-{
-  if (!self)
-    return FALSE;
-
-  /* If override redirect: */
-  if (!self->priv->window)
-    return TRUE;
-
-  return meta_window_showing_on_its_workspace (self->priv->window);
-}
-
 static void
 meta_window_actor_freeze (MetaWindowActor *self)
 {
@@ -1369,7 +1245,7 @@ meta_window_actor_set_redirected (MetaWindowActor *self, gboolean state)
   MetaDisplay *display = meta_window_get_display (metaWindow);
 
   Display *xdisplay = meta_display_get_xdisplay (display);
-  Window  xwin = meta_window_actor_get_x_window (self);
+  Window  xwin = meta_window_get_toplevel_xwindow (metaWindow);
 
   if (state)
     {
@@ -1392,7 +1268,6 @@ void
 meta_window_actor_destroy (MetaWindowActor *self)
 {
   MetaWindow	      *window;
-  MetaCompScreen      *info;
   MetaWindowActorPrivate *priv;
   MetaWindowType window_type;
 
@@ -1400,14 +1275,6 @@ meta_window_actor_destroy (MetaWindowActor *self)
 
   window = priv->window;
   window_type = meta_window_get_window_type (window);
-  meta_window_set_compositor_private (window, NULL);
-
-  /*
-   * We remove the window from internal lookup hashes and thus any other
-   * unmap events etc fail
-   */
-  info = meta_screen_get_compositor_data (priv->screen);
-  info->windows = g_list_remove (info->windows, (gconstpointer) self);
 
   if (window_type == META_WINDOW_DROPDOWN_MENU ||
       window_type == META_WINDOW_POPUP_MENU ||
@@ -1470,8 +1337,6 @@ meta_window_actor_sync_actor_geometry (MetaWindowActor *self,
                               window_rect.x, window_rect.y);
   clutter_actor_set_size (CLUTTER_ACTOR (self),
                           window_rect.width, window_rect.height);
-
-  g_signal_emit (self, signals[POSITION_CHANGED], 0);
 }
 
 void
@@ -1619,68 +1484,9 @@ meta_window_actor_unmaximize (MetaWindowActor   *self,
 MetaWindowActor *
 meta_window_actor_new (MetaWindow *window)
 {
-  MetaScreen	 	 *screen = meta_window_get_screen (window);
-  MetaCompScreen         *info = meta_screen_get_compositor_data (screen);
-  MetaWindowActor        *self;
-  MetaWindowActorPrivate *priv;
-  MetaFrame		 *frame;
-  Window		  top_window;
-  ClutterActor           *window_group;
-
-  frame = meta_window_get_frame (window);
-  if (frame)
-    top_window = meta_frame_get_xwindow (frame);
-  else
-    top_window = meta_window_get_xwindow (window);
-
-  meta_verbose ("add window: Meta %p, xwin 0x%x\n", window, (guint)top_window);
-
-  self = g_object_new (META_TYPE_WINDOW_ACTOR,
-                       "meta-window",         window,
-                       "x-window",            top_window,
-                       "meta-screen",         screen,
+  return g_object_new (META_TYPE_WINDOW_ACTOR,
+                       "meta-window", window,
                        NULL);
-
-  priv = self->priv;
-
-  priv->last_width = -1;
-  priv->last_height = -1;
-
-  priv->mapped = meta_window_toplevel_is_mapped (priv->window);
-  if (priv->mapped)
-    meta_window_actor_queue_create_pixmap (self);
-
-  meta_window_actor_set_updates_frozen (self,
-                                        meta_window_updates_are_frozen (priv->window));
-
-  /* If a window doesn't start off with updates frozen, we should
-   * we should send a _NET_WM_FRAME_DRAWN immediately after the first drawn.
-   */
-  if (priv->window->extended_sync_request_counter && !priv->updates_frozen)
-    meta_window_actor_queue_frame_drawn (self, FALSE);
-
-  meta_window_actor_sync_actor_geometry (self, priv->window->placed);
-
-  /* Hang our compositor window state off the MetaWindow for fast retrieval */
-  meta_window_set_compositor_private (window, G_OBJECT (self));
-
-  if (window->layer == META_LAYER_OVERRIDE_REDIRECT)
-    window_group = info->top_window_group;
-  else
-    window_group = info->window_group;
-
-  clutter_actor_add_child (window_group, CLUTTER_ACTOR (self));
-
-  clutter_actor_hide (CLUTTER_ACTOR (self));
-
-  clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE);
-
-  /* Initial position in the stack is arbitrary; stacking will be synced
-   * before we first paint.
-   */
-  info->windows = g_list_append (info->windows, self);
-
-  return self;
 }
 
 void
@@ -1906,8 +1712,8 @@ check_needs_pixmap (MetaWindowActor *self)
   MetaDisplay         *display  = meta_screen_get_display (screen);
   Display             *xdisplay = meta_display_get_xdisplay (display);
   MetaCompScreen      *info     = meta_screen_get_compositor_data (screen);
+  Window               xwindow  = meta_window_get_toplevel_xwindow (priv->window);
   MetaCompositor      *compositor;
-  Window               xwindow  = priv->xwindow;
 
   if (!priv->needs_pixmap)
     return;
@@ -1971,17 +1777,6 @@ check_needs_pixmap (MetaWindowActor *self)
        */
       if (G_UNLIKELY (!cogl_texture_pixmap_x11_is_using_tfp_extension (COGL_TEXTURE_PIXMAP_X11 (texture))))
         g_warning ("NOTE: Not using GLX TFP!\n");
-
-      /* ::size-changed is supposed to refer to meta_window_get_frame_rect().
-       * Emitting it here works pretty much OK because a new value of the
-       * *input* rect (which is the outer rect with the addition of invisible
-       * borders) forces a new pixmap and we get here. In the rare case where
-       * a change to the window size was exactly balanced by a change to the
-       * invisible borders, we would miss emitting the signal. We would also
-       * emit spurious signals when we get a new pixmap without a new size,
-       * but that should be mostly harmless.
-       */
-      g_signal_emit (self, signals[SIZE_CHANGED], 0);
     }
 
   priv->needs_pixmap = FALSE;

src/compositor/plugins/default.c

@@ -412,7 +412,7 @@ switch_workspace (MetaPlugin *plugin,
       ClutterActor    *actor	    = CLUTTER_ACTOR (window_actor);
       gint             win_workspace;
 
-      win_workspace = meta_window_actor_get_workspace (window_actor);
+      win_workspace = meta_window_get_workspace (meta_window_actor_get_meta_window (window_actor));
 
       if (win_workspace == to || win_workspace == from)
         {

src/core/core.c

@@ -280,8 +280,7 @@ meta_core_lower_beneath_grab_window (Display *xdisplay,
     return;
 
   changes.stack_mode = Below;
-  changes.sibling = grab_window->frame ? grab_window->frame->xwindow
-                                       : grab_window->xwindow;
+  changes.sibling = meta_window_get_toplevel_xwindow (grab_window);
 
   meta_stack_tracker_record_lower_below (screen->stack_tracker,
                                          xwindow,

src/core/display.c

@@ -4008,7 +4008,7 @@ meta_display_begin_grab_op (MetaDisplay *display,
    *   key grab on the RootWindow.
    */
   if (grab_window)
-    grab_xwindow = grab_window->frame ? grab_window->frame->xwindow : grab_window->xwindow;
+    grab_xwindow = meta_window_get_toplevel_xwindow (grab_window);
   else
     grab_xwindow = screen->xroot;
 

src/core/keybindings.c

@@ -1277,7 +1277,7 @@ meta_window_grab_keys (MetaWindow  *window)
     }
 
   meta_window_change_keygrabs (window,
-                               window->frame ? window->frame->xwindow : window->xwindow,
+                               meta_window_get_toplevel_xwindow (window),
                                TRUE);
 
   window->keys_grabbed = TRUE;
@@ -1580,7 +1580,7 @@ meta_window_grab_all_keys (MetaWindow  *window,
               window->desc);
   meta_window_focus (window, timestamp);
 
-  grabwindow = window->frame ? window->frame->xwindow : window->xwindow;
+  grabwindow = meta_window_get_toplevel_xwindow (window);
 
   meta_topic (META_DEBUG_KEYBINDINGS,
               "Grabbing all keys on window %s\n", window->desc);

src/core/window-private.h

@@ -36,6 +36,7 @@
 
 #include <config.h>
 #include <meta/compositor.h>
+#include <meta/meta-window-actor.h>
 #include <meta/window.h>
 #include "screen-private.h"
 #include <meta/util.h>
@@ -438,7 +439,10 @@ struct _MetaWindow
   /* maintained by group.c */
   MetaGroup *group;
 
-  GObject *compositor_private;
+  GSList *actors;
+
+  /* The core actor is the one in the window group. */
+  MetaWindowActor *core_actor;
 
   /* Focused window that is (directly or indirectly) attached to this one */
   MetaWindow *attached_focus_window;
@@ -696,4 +700,6 @@ void meta_window_set_shape_region         (MetaWindow     *window,
                                            cairo_region_t *region);
 void meta_window_update_shape_region_x11  (MetaWindow *window);
 
+Window meta_window_get_toplevel_xwindow (MetaWindow *window);
+
 #endif

src/core/window.c

@@ -194,6 +194,8 @@ enum
   FOCUS,
   RAISED,
   UNMANAGED,
+  SIZE_CHANGED,
+  POSITION_CHANGED,
 
   LAST_SIGNAL
 };
@@ -587,6 +589,22 @@ meta_window_class_init (MetaWindowClass *klass)
                   G_STRUCT_OFFSET (MetaWindowClass, unmanaged),
                   NULL, NULL, NULL,
                   G_TYPE_NONE, 0);
+
+  window_signals[POSITION_CHANGED] =
+    g_signal_new ("position-changed",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
+
+  window_signals[SIZE_CHANGED] =
+    g_signal_new ("size-changed",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
 }
 
 static void
@@ -1175,7 +1193,8 @@ meta_window_new_with_attrs (MetaDisplay       *display,
   window->initial_workspace = 0; /* not used */
   window->initial_timestamp = 0; /* not used */
 
-  window->compositor_private = NULL;
+  window->core_actor = NULL;
+  window->actors = NULL;
 
   window->monitor = meta_screen_get_monitor_for_window (window->screen, window);
 
@@ -5283,6 +5302,12 @@ meta_window_move_resize_internal (MetaWindow          *window,
   else if (is_user_action)
     save_user_window_placement (window);
 
+  if (need_move_frame)
+    g_signal_emit (window, window_signals[POSITION_CHANGED], 0);
+
+  if (need_resize_client)
+    g_signal_emit (window, window_signals[SIZE_CHANGED], 0);
+
   if (need_move_frame || need_resize_frame ||
       need_move_client || need_resize_client ||
       did_placement)
@@ -11040,24 +11065,15 @@ meta_window_get_gtk_menubar_object_path (MetaWindow *window)
  * meta_window_get_compositor_private:
  * @window: a #MetaWindow
  *
- * Gets the compositor's wrapper object for @window.
- *
- * Return value: (transfer none): the wrapper object.
- **/
+ * Return value: (transfer none):
+ */
 GObject *
 meta_window_get_compositor_private (MetaWindow *window)
 {
   if (!window)
     return NULL;
-  return window->compositor_private;
-}
 
-void
-meta_window_set_compositor_private (MetaWindow *window, GObject *priv)
-{
-  if (!window)
-    return;
-  window->compositor_private = priv;
+  return G_OBJECT (window->core_actor);
 }
 
 const char *
@@ -11438,3 +11454,9 @@ meta_window_can_close (MetaWindow *window)
 {
   return window->has_close_func;
 }
+
+Window
+meta_window_get_toplevel_xwindow (MetaWindow *window)
+{
+  return window->frame ? window->frame->xwindow : window->xwindow;
+}

src/meta/meta-window-actor.h

@@ -60,11 +60,8 @@ struct _MetaWindowActor
 GType meta_window_actor_get_type (void);
 
 Window             meta_window_actor_get_x_window         (MetaWindowActor *self);
-gint               meta_window_actor_get_workspace        (MetaWindowActor *self);
 MetaWindow *       meta_window_actor_get_meta_window      (MetaWindowActor *self);
 ClutterActor *     meta_window_actor_get_texture          (MetaWindowActor *self);
-gboolean           meta_window_actor_is_override_redirect (MetaWindowActor *self);
-gboolean       meta_window_actor_showing_on_its_workspace (MetaWindowActor *self);
 gboolean       meta_window_actor_is_destroyed (MetaWindowActor *self);
 
 #endif /* META_WINDOW_ACTOR_H */

src/meta/window.h

@@ -154,7 +154,6 @@ void meta_window_change_workspace_by_index (MetaWindow *window,
 void meta_window_change_workspace          (MetaWindow  *window,
                                             MetaWorkspace *workspace);
 GObject *meta_window_get_compositor_private (MetaWindow *window);
-void meta_window_set_compositor_private (MetaWindow *window, GObject *priv);
 void meta_window_configure_notify (MetaWindow *window, XConfigureEvent *event);
 const char *meta_window_get_role (MetaWindow *window);
 MetaStackLayer meta_window_get_layer (MetaWindow *window);