Set vertical/horizontal class on all widgets overriding GtkOrientable::orientation

This is so g_object_set() on that property leaves widgets' style in
a meaningful state. Fully fixes bug 639157.

1 files changed, 20 insertions, 0 deletions

diff --git a/gtk/gtkseparator.c b/gtk/gtkseparator.c
index 1de28a1a58..b30292fc50 100644
--- a/gtk/gtkseparator.c
+++ b/gtk/gtkseparator.c
@@ -113,6 +113,25 @@ gtk_separator_init (GtkSeparator *separator)
 }
 
 static void
+reset_orientation_style (GtkSeparator *separator)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (separator));
+
+  if (separator->priv->orientation == GTK_ORIENTATION_VERTICAL)
+    {
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_VERTICAL);
+      gtk_style_context_remove_class (context, GTK_STYLE_CLASS_HORIZONTAL);
+    }
+  else
+    {
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_HORIZONTAL);
+      gtk_style_context_remove_class (context, GTK_STYLE_CLASS_VERTICAL);
+    }
+}
+
+static void
 gtk_separator_set_property (GObject      *object,
                             guint         prop_id,
                             const GValue *value,
@@ -125,6 +144,7 @@ gtk_separator_set_property (GObject      *object,
     {
     case PROP_ORIENTATION:
       private->orientation = g_value_get_enum (value);
+      reset_orientation_style (separator);
       gtk_widget_queue_resize (GTK_WIDGET (object));
       break;
     default: