Fix 1796068: when a valuenode changes, ValueNode::on_changed() will now signal all...

[synfig.git] / synfig-core / trunk / src / synfig / valuenode.cpp

diff --git a/synfig-core/trunk/src/synfig/valuenode.cpp b/synfig-core/trunk/src/synfig/valuenode.cpp
index cd7a7b5..5e23fc7 100644 (file)
--- a/synfig-core/trunk/src/synfig/valuenode.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode.cpp
@@ -235,9 +235,12 @@ ValueNode::~ValueNode()
 void
 ValueNode::on_changed()
 {
-       if(get_parent_canvas())
-               get_parent_canvas()->signal_value_node_changed()(this);
-       else if(get_root_canvas() && get_parent_canvas())
+       etl::loose_handle<Canvas> parent_canvas = get_parent_canvas();
+       if(parent_canvas)
+               do                                              // signal to all the ancestor canvases
+                       parent_canvas->signal_value_node_changed()(this);
+               while (parent_canvas = parent_canvas->parent());
+       else if(get_root_canvas())
                get_root_canvas()->signal_value_node_changed()(this);
 
        Node::on_changed();