GtkStyleSet: Add method to register font properties.

gtk/gtkstyleset.c

@@ -68,6 +68,7 @@ gtk_style_set_class_init (GtkStyleSetClass *klass)
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GdkColor black = { 0, 0, 0, 0 };
   GdkColor white = { 0, 65535, 65535, 65535 };
+  PangoFontDescription *font_desc;
 
   object_class->finalize = gtk_style_set_finalize;
 
@@ -77,6 +78,10 @@ gtk_style_set_class_init (GtkStyleSetClass *klass)
   gtk_style_set_register_property_color ("text-color", &white);
   gtk_style_set_register_property_color ("base-color", &white);
 
+  font_desc = pango_font_description_from_string ("Sans 10");
+  gtk_style_set_register_property_font ("font", font_desc);
+  pango_font_description_free (font_desc);
+
   g_type_class_add_private (object_class, sizeof (GtkStyleSetPrivate));
 }
 
@@ -227,6 +232,23 @@ gtk_style_set_register_property_color (const gchar *property_name,
   g_value_unset (&value);
 }
 
+void
+gtk_style_set_register_property_font (const gchar          *property_name,
+                                      PangoFontDescription *initial_value)
+{
+  GValue value = { 0 };
+
+  g_return_if_fail (property_name != NULL);
+  g_return_if_fail (initial_value != NULL);
+
+  g_value_init (&value, PANGO_TYPE_FONT_DESCRIPTION);
+  g_value_set_boxed (&value, initial_value);
+
+  gtk_style_set_register_property (property_name, PANGO_TYPE_FONT_DESCRIPTION, &value);
+
+  g_value_unset (&value);
+}
+
 void
 gtk_style_set_register_property_int (const gchar *property_name,
                                      gint         initial_value)

gtk/gtkstyleset.h

@@ -55,6 +55,8 @@ void gtk_style_set_register_property (const gchar *property_name,
 
 void gtk_style_set_register_property_color  (const gchar *property_name,
                                              GdkColor    *default_value);
+void gtk_style_set_register_property_font   (const gchar          *property_name,
+                                             PangoFontDescription *initial_value);
 void gtk_style_set_register_property_int    (const gchar *property_name,
                                              gint         default_value);
 void gtk_style_set_register_property_uint   (const gchar *property_name,