[gtk+/wip/css: 10/28] styleproperties: Add a hacky function to redirect color lookups

[Benjamin Otte <otte src gnome org>]

commit 58f402d9148e8d3e0f94deb7fb832a457f7e8f76
Author: Benjamin Otte <otte redhat com>
Date:   Wed Dec 28 22:05:35 2011 +0100

    styleproperties: Add a hacky function to redirect color lookups
    
    This will soon be necessary.
    FIXME: Make sure this gets removed again.

 gtk/gtkstyleproperties.c        |   21 +++++++++++++++++++++
 gtk/gtkstylepropertiesprivate.h |    3 +++
 2 files changed, 24 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkstyleproperties.c b/gtk/gtkstyleproperties.c
index 906ded7..5470bf5 100644
--- a/gtk/gtkstyleproperties.c
+++ b/gtk/gtkstyleproperties.c
@@ -379,6 +379,23 @@ gtk_style_properties_new (void)
   return g_object_new (GTK_TYPE_STYLE_PROPERTIES, NULL);
 }
 
+void
+_gtk_style_properties_set_color_lookup_func (GtkStyleProperties         *props,
+                                             GtkSymbolicColorLookupFunc  func,
+                                             gpointer                    data)
+{
+  GtkStylePropertiesPrivate *priv;
+
+  g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
+  g_return_if_fail (func != NULL);
+
+  priv = props->priv;
+  g_return_if_fail (priv->color_map == NULL);
+
+  priv->color_lookup_func = func;
+  priv->color_lookup_data = data;
+}
+
 /**
  * gtk_style_properties_map_color:
  * @props: a #GtkStyleProperties
@@ -402,6 +419,7 @@ gtk_style_properties_map_color (GtkStyleProperties *props,
   g_return_if_fail (color != NULL);
 
   priv = props->priv;
+  g_return_if_fail (priv->color_lookup_func == NULL);
 
   if (G_UNLIKELY (!priv->color_map))
     priv->color_map = g_hash_table_new_full (g_str_hash,
@@ -437,6 +455,9 @@ gtk_style_properties_lookup_color (GtkStyleProperties *props,
 
   priv = props->priv;
 
+  if (priv->color_lookup_func)
+    return priv->color_lookup_func (priv->color_lookup_data, name);
+
   if (!priv->color_map)
     return NULL;
 
diff --git a/gtk/gtkstylepropertiesprivate.h b/gtk/gtkstylepropertiesprivate.h
index b7242c0..3465270 100644
--- a/gtk/gtkstylepropertiesprivate.h
+++ b/gtk/gtkstylepropertiesprivate.h
@@ -30,6 +30,9 @@ void           _gtk_style_properties_get                      (GtkStylePropertie
 							       GtkStateFlags            state,
 							       GtkStylePropertyContext *context,
 							       ...);
+void           _gtk_style_properties_set_color_lookup_func    (GtkStyleProperties      *props,
+                                                               GtkSymbolicColorLookupFunc func,
+                                                               gpointer                 data);
 void           _gtk_style_properties_get_valist               (GtkStyleProperties      *props,
 							       GtkStateFlags            state,
 							       GtkStylePropertyContext *context,