[gtk+] GtkStyleContext: store layout extents for animation purposes.

[Carlos Garnacho <carlosg src gnome org>]

commit 62e9188ff3bb6bd662a14658728da8c98d45e330
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Nov 24 22:57:18 2010 +0100

    GtkStyleContext: store layout extents for animation purposes.

 gtk/gtkstylecontext.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index ba72fb7..61d3b7b 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -3252,6 +3252,7 @@ gtk_render_layout (GtkStyleContext *context,
 {
   GtkStyleContextPrivate *priv;
   GtkThemingEngineClass *engine_class;
+  PangoRectangle extents;
 
   g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
   g_return_if_fail (cr != NULL);
@@ -3259,6 +3260,14 @@ gtk_render_layout (GtkStyleContext *context,
   priv = context->priv;
   engine_class = GTK_THEMING_ENGINE_GET_CLASS (priv->theming_engine);
 
+  pango_layout_get_extents (layout, &extents, NULL);
+
+  store_animation_region (context,
+                          x + extents.x,
+                          y + extents.y,
+                          extents.width,
+                          extents.height);
+
   _gtk_theming_engine_set_context (priv->theming_engine, context);
   engine_class->render_layout (priv->theming_engine, cr, x, y, layout);
 }