[totem/gnome-3-8] backend: prevent excessive relayouts stopping animations

[Bastien Nocera <hadess src gnome org>]

commit 487510bd742b33b31e8cff8c06bba503f8d3a382
Author: Lionel Landwerlin <llandwerlin gmail com>
Date:   Tue Jul 2 18:19:40 2013 +0100

    backend: prevent excessive relayouts stopping animations
    
    Every time the elapsed time widget is updating its content, this
    triggers a relayout that propagates to the toplevel actor (ie the
    stage). Because of the way constraints work, when a relayout is queued
    on an actor that is the source of a constraint, it will automatically
    queue a relayout on the destination of the constraint too. And because
    of the constraints applied between the stage and some of the children,
    any relayout triggered by any actor within the scene was relayouting
    almost everything, and therefore stopping animations.
    
    This patch removes the usage of constraints in favor of layout
    managers that don't have the annoying property of triggering relayouts
    on everything.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700051
    
    Conflicts:
        src/backend/bacon-video-widget.c

 src/backend/bacon-video-widget.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/src/backend/bacon-video-widget.c b/src/backend/bacon-video-widget.c
index 335c417..fc2f5bf 100644
--- a/src/backend/bacon-video-widget.c
+++ b/src/backend/bacon-video-widget.c
@@ -5889,7 +5889,6 @@ bacon_video_widget_initable_init (GInitable     *initable,
   GstElement *audio_sink = NULL, *video_sink = NULL;
   gchar *version_str;
   GstPlayFlags flags;
-  ClutterConstraint *constraint;
   GstElement *audio_bin, *audio_converter;
   GstPad *audio_pad;
 
@@ -5961,7 +5960,10 @@ bacon_video_widget_initable_init (GInitable     *initable,
   bvw->priv->auto_resize = FALSE;
 
   bvw->priv->stage = gtk_clutter_embed_get_stage (GTK_CLUTTER_EMBED (bvw));
-  clutter_actor_set_background_color (CLUTTER_ACTOR (bvw->priv->stage), CLUTTER_COLOR_Black);
+  clutter_actor_set_layout_manager (bvw->priv->stage,
+                                    clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_FILL, 
CLUTTER_BIN_ALIGNMENT_FILL));
+  clutter_actor_set_name (bvw->priv->stage, "stage");
+  clutter_actor_set_background_color (bvw->priv->stage, CLUTTER_COLOR_Black);
 
   /* Video sink, with aspect frame */
   bvw->priv->texture = g_object_new (CLUTTER_TYPE_TEXTURE,
@@ -5975,8 +5977,6 @@ bacon_video_widget_initable_init (GInitable     *initable,
   bvw->priv->logo = clutter_texture_new ();
   totem_aspect_frame_set_child (TOTEM_ASPECT_FRAME (bvw->priv->logo_frame), bvw->priv->logo);
   clutter_actor_add_child (CLUTTER_ACTOR (bvw->priv->stage), bvw->priv->logo_frame);
-  constraint = clutter_bind_constraint_new (bvw->priv->stage, CLUTTER_BIND_SIZE, 0.0);
-  clutter_actor_add_constraint_with_name (bvw->priv->logo_frame, "size", constraint);
   clutter_actor_hide (CLUTTER_ACTOR (bvw->priv->logo_frame));
 
   /* The video */
@@ -5985,8 +5985,6 @@ bacon_video_widget_initable_init (GInitable     *initable,
   totem_aspect_frame_set_child (TOTEM_ASPECT_FRAME (bvw->priv->frame), bvw->priv->texture);
 
   clutter_actor_add_child (CLUTTER_ACTOR (bvw->priv->stage), bvw->priv->frame);
-  constraint = clutter_bind_constraint_new (bvw->priv->stage, CLUTTER_BIND_SIZE, 0.0);
-  clutter_actor_add_constraint_with_name (bvw->priv->frame, "size", constraint);
 
   clutter_actor_set_child_above_sibling (CLUTTER_ACTOR (bvw->priv->stage),
                                         CLUTTER_ACTOR (bvw->priv->logo_frame),