[gtk+/wip/cssvalue: 162/165] stylecontext: Avoid style_context_save() calls

[Benjamin Otte <otte src gnome org>]

commit 674889ba059262dfd98af3a7f0a21d3eaf4d5c41
Author: Benjamin Otte <otte redhat com>
Date:   Wed Apr 11 16:36:48 2012 +0200

    stylecontext: Avoid style_context_save() calls
    
    Introduce style_data_lookup_for_state() that does this.

 gtk/gtkstylecontext.c |   32 ++++++++++++++++++++------------
 1 files changed, 20 insertions(+), 12 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 2d5015f..cf79e11 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -994,6 +994,23 @@ style_data_lookup (GtkStyleContext *context)
   return data;
 }
 
+static StyleData *
+style_data_lookup_for_state (GtkStyleContext *context,
+                             GtkStateFlags    state)
+{
+  StyleData *data;
+
+  if (context->priv->info->state_flags == state)
+    return style_data_lookup (context);
+
+  gtk_style_context_save (context);
+  gtk_style_context_set_state (context, state);
+  data = style_data_lookup (context);
+  gtk_style_context_restore (context);
+
+  return data;
+}
+
 static void
 gtk_style_context_set_invalid (GtkStyleContext *context,
                                gboolean         invalid)
@@ -1338,11 +1355,8 @@ gtk_style_context_get_property (GtkStyleContext *context,
       return;
     }
 
-  gtk_style_context_save (context);
-  gtk_style_context_set_state (context, state);
-  data = style_data_lookup (context);
+  data = style_data_lookup_for_state (context, state);
   _gtk_style_property_query (prop, value, gtk_style_context_query_func, data->store);
-  gtk_style_context_restore (context);
 }
 
 /**
@@ -2195,10 +2209,7 @@ _gtk_style_context_peek_style_property (GtkStyleContext *context,
 
   priv = context->priv;
 
-  gtk_style_context_save (context);
-  gtk_style_context_set_state (context, state);
-  data = style_data_lookup (context);
-  gtk_style_context_restore (context);
+  data = style_data_lookup_for_state (context, state);
 
   key.widget_type = widget_type;
   key.state = state;
@@ -3421,10 +3432,7 @@ gtk_style_context_get_font (GtkStyleContext *context,
   priv = context->priv;
   g_return_val_if_fail (priv->widget != NULL || priv->widget_path != NULL, NULL);
 
-  gtk_style_context_save (context);
-  gtk_style_context_set_state (context, state);
-  data = style_data_lookup (context);
-  gtk_style_context_restore (context);
+  data = style_data_lookup_for_state (context, state);
 
   /* Yuck, fonts are created on-demand but we don't return a ref.
    * Do bad things to achieve this requirement */