nodes can now be connected through the node editor

nodes/node.h

@@ -127,7 +127,7 @@ public:
   virtual NodePtr Create(Clip *c) = 0;
 
   void AddRow(EffectRow* row);
-
+  int IndexOfRow(EffectRow* row);
   EffectRow* row(int i);
   int row_count();
 
@@ -135,6 +135,8 @@ public:
   EffectGizmo* gizmo(int i);
   int gizmo_count();
 
+  QVector<NodeEdge*> GetAllEdges();
+
   bool IsEnabled();
   bool IsExpanded();
 
@@ -168,6 +170,8 @@ public:
   int getIterations();
   void setIterations(int i);
 
+  const QPointF& pos();
+
   virtual void process_image(double timecode, uint8_t* input, uint8_t* output, int size);
   virtual void process_shader(double timecode, GLTextureCoords&, int iteration);
   virtual void process_coords(double timecode, GLTextureCoords& coords, int data);
@@ -225,6 +229,7 @@ public slots:
   void FieldChanged();
   void SetEnabled(bool b);
   void SetExpanded(bool e);
+  void SetPos(const QPointF& pos);
 signals:
   void EnabledChanged(bool);
 private slots:
@@ -264,6 +269,8 @@ private:
 
   QVector<KeyframeDataChange*> gizmo_dragging_actions_;
 
+  QPointF pos_;
+
   // superimpose functions
   virtual void redraw(double timecode);
   bool valueHasChanged(double timecode);