[clutter] text: Prevent a relayout if font descriptions or attrs are equal

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

commit 80eeac71f98ec387b141cbaa540d67619bc954b4
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri Nov 30 20:21:23 2012 -0500

    text: Prevent a relayout if font descriptions or attrs are equal
    
    https://bugzilla.gnome.org/show_bug.cgi?id=689399

 clutter/clutter-text.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/clutter/clutter-text.c b/clutter/clutter-text.c
index 3cefa83..4f27d72 100644
--- a/clutter/clutter-text.c
+++ b/clutter/clutter-text.c
@@ -571,7 +571,8 @@ clutter_text_set_font_description_internal (ClutterText          *self,
 {
   ClutterTextPrivate *priv = self->priv;
 
-  if (priv->font_desc == desc)
+  if (priv->font_desc == desc ||
+      pango_font_description_equal (priv->font_desc, desc))
     return;
 
   if (priv->font_desc != NULL)
@@ -5423,6 +5424,12 @@ clutter_text_set_attributes (ClutterText   *self,
 
   priv = self->priv;
 
+  /* While we should probably test for equality, Pango doesn't
+   * provide us an easy method to check for AttrList equality.
+   */
+  if (priv->attrs == attrs)
+    return;
+
   if (attrs)
     pango_attr_list_ref (attrs);