From 2e85269368a815435f107f1b7dfbc15c7e806fa6 Mon Sep 17 00:00:00 2001
From: "Owen W. Taylor" <otaylor@fishsoup.net>
Date: Tue, 26 Nov 2013 11:04:27 -0500
Subject: [PATCH] Don't queue redraws when reallocating actor that haven't
 moved

When support for implicit animation of actor position was added,
the optimization for not queueing when allocating an actor back
to the same location was lost. This optimization is important
since when we are hierarchically allocating down from the top of
the stage we constantly reallocate the actors at the top of the
hierarchy back to the same place.

https://bugzilla.gnome.org/show_bug.cgi?id=719368
---
 clutter/clutter-actor.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/clutter/clutter-actor.c b/clutter/clutter-actor.c
index 4504ac6..b371183 100644
--- a/clutter/clutter-actor.c
+++ b/clutter/clutter-actor.c
@@ -9738,7 +9738,9 @@ clutter_actor_allocate_internal (ClutterActor           *self,
 
   CLUTTER_UNSET_PRIVATE_FLAGS (self, CLUTTER_IN_RELAYOUT);
 
-  clutter_actor_queue_redraw (self);
+  /* Caller should call clutter_actor_queue_redraw() if needed
+   * for that particular case.
+   */
 }
 
 /**
@@ -9847,6 +9849,14 @@ clutter_actor_allocate (ClutterActor           *self,
       return;
     }
 
+  if (!stage_allocation_changed)
+    {
+      /* If the actor didn't move but needs_allocation is set, we just
+       * need to allocate the children */
+      clutter_actor_allocate_internal (self, &real_allocation, flags);
+      return;
+    }
+
   /* When ABSOLUTE_ORIGIN_CHANGED is passed in to
    * clutter_actor_allocate(), it indicates whether the parent has its
    * absolute origin moved; when passed in to ClutterActor::allocate()
@@ -14718,6 +14728,7 @@ clutter_actor_set_animatable_property (ClutterActor *actor,
       clutter_actor_allocate_internal (actor,
                                        g_value_get_boxed (value),
                                        actor->priv->allocation_flags);
+      clutter_actor_queue_redraw (actor);
       break;
 
     case PROP_DEPTH:
-- 
1.8.5.3