[gimp] Don't forget to add added drawables' GeglNodes to the stack's GeglNode

[Michael Natterer <mitch src gnome org>]

commit fe84af9fd98feef46cb5448b898610e1ab7d24ec
Author: Michael Natterer <mitch gimp org>
Date:   Tue Aug 25 23:10:31 2009 +0200

    Don't forget to add added drawables' GeglNodes to the stack's GeglNode
    
    I have no clue how this could work before, but fixing it fixes
    projection of nested groups. The goat can be evil.

 app/core/gimpdrawablestack.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/app/core/gimpdrawablestack.c b/app/core/gimpdrawablestack.c
index d54102c..beec703 100644
--- a/app/core/gimpdrawablestack.c
+++ b/app/core/gimpdrawablestack.c
@@ -158,7 +158,12 @@ gimp_drawable_stack_add (GimpContainer *container,
   GIMP_CONTAINER_CLASS (parent_class)->add (container, object);
 
   if (stack->graph)
-    gimp_drawable_stack_add_node (stack, GIMP_DRAWABLE (object));
+    {
+      gegl_node_add_child (stack->graph,
+                           gimp_item_get_node (GIMP_ITEM (object)));
+
+      gimp_drawable_stack_add_node (stack, GIMP_DRAWABLE (object));
+    }
 
   if (gimp_item_get_visible (GIMP_ITEM (object)))
     gimp_drawable_stack_drawable_visible (GIMP_ITEM (object), stack);