work towards timeline/nodeview interactivity

app/widget/nodeview/nodeviewitem.h

@@ -136,6 +136,11 @@ private:
    */
   QPointF GetInputPointInternal(int index, const QPointF &source_pos) const;
 
+  /**
+   * @brief Internal update function when logical position changes
+   */
+  void UpdateNodePosition();
+
   /**
    * @brief Reference to attached Node
    */
@@ -167,6 +172,8 @@ private:
 
   QVector<NodeViewEdge*> edges_;
 
+  QPointF cached_node_pos_;
+
 };
 
 }