nodes can now be connected through the node editor

panels/nodeeditor.h

@@ -6,6 +6,7 @@
 #include "effectspanel.h"
 #include "ui/nodeview.h"
 #include "ui/nodeui.h"
+#include "ui/nodeedgeui.h"
 
 class NodeEditor : public EffectsPanel {
   Q_OBJECT
@@ -22,6 +23,10 @@ private:
   QGraphicsScene scene_;
   NodeView view_;
   QVector<NodeUI*> nodes_;
+  QVector<NodeEdgeUI*> edges_;
+
+private slots:
+  void ItemsChanged();
 
 };