[clutter] cally: Avoid clone spamming state changes

[Emmanuele Bassi <ebassi src gnome org>]

commit 2b0ff2f2ba0af6f3baf094759c72615af9e5918f
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Feb 23 15:12:57 2016 +0000

    cally: Avoid clone spamming state changes
    
    Clones may generate a temporary map/unmap on their source when painting;
    this, in turn, will generate unnecessary ATK state changes.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756371

 clutter/cally/cally-actor.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/clutter/cally/cally-actor.c b/clutter/cally/cally-actor.c
index 8163e79..375b7db 100644
--- a/clutter/cally/cally-actor.c
+++ b/clutter/cally/cally-actor.c
@@ -1017,6 +1017,13 @@ cally_actor_real_notify_clutter (GObject    *obj,
     }
   else if (g_strcmp0 (pspec->name, "mapped") == 0)
     {
+      /* Clones may temporarily map an actor in order to
+       * paint it; we don't want this to generate an ATK
+       * state change
+       */
+      if (clutter_actor_is_in_clone_paint (actor))
+        return;
+
       state = ATK_STATE_SHOWING;
       value = clutter_actor_is_mapped (actor);
     }