restored nodeview

app/widget/nodeview/nodeview.h

@@ -22,47 +22,143 @@
 #define NODEVIEW_H
 
 #include <QGraphicsView>
+#include <QTimer>
 
 #include "node/graph.h"
 #include "node/nodecopypaste.h"
+#include "nodeviewedge.h"
+#include "nodeviewscene.h"
 #include "widget/handmovableview/handmovableview.h"
 
 namespace olive {
 
+/**
+ * @brief A widget for viewing and editing node graphs
+ *
+ * This widget takes a NodeGraph object and constructs a QGraphicsScene representing its data, viewing and allowing
+ * the user to make modifications to it.
+ */
 class NodeView : public HandMovableView, public NodeCopyPasteService
 {
   Q_OBJECT
 public:
   NodeView(QWidget* parent);
 
+  virtual ~NodeView() override;
+
   /**
    * @brief Sets the graph to view
    */
-  void SetGraph(NodeGraph* graph){}
+  void SetGraph(NodeGraph* graph);
 
   /**
    * @brief Delete selected nodes from graph (user-friendly/undoable)
    */
-  void DeleteSelected(){}
+  void DeleteSelected();
 
-  void SelectAll(){}
-  void DeselectAll(){}
+  void SelectAll();
+  void DeselectAll();
 
-  void Select(const QVector<Node*>& nodes){}
-  void SelectWithDependencies(QVector<Node *> nodes){}
+  void Select(const QVector<Node*>& nodes);
+  void SelectWithDependencies(QVector<Node *> nodes);
 
-  void CopySelected(bool cut){}
-  void Paste(){}
+  void CopySelected(bool cut);
+  void Paste();
 
-  void Duplicate(){}
+  void Duplicate();
 
-  void SelectBlocks(const QVector<Block*>& blocks){}
+signals:
+  void NodesSelected(const QVector<Node*>& nodes);
 
-  void DeselectBlocks(const QVector<Block*>& blocks){}
+  void NodesDeselected(const QVector<Node*>& nodes);
+
+protected:
+  virtual void keyPressEvent(QKeyEvent *event) override;
+
+  virtual void mousePressEvent(QMouseEvent *event) override;
+  virtual void mouseMoveEvent(QMouseEvent *event) override;
+  virtual void mouseReleaseEvent(QMouseEvent* event) override;
+
+  virtual void wheelEvent(QWheelEvent* event) override;
 
 private:
+  void AttachNodesToCursor(const QVector<Node *> &nodes);
+
+  void AttachItemsToCursor(const QVector<NodeViewItem *> &items);
+
+  void DetachItemsFromCursor();
+
+  void SetFlowDirection(NodeViewCommon::FlowDirection dir);
+
+  void MoveAttachedNodesToCursor(const QPoint &p);
+
+  void ConnectSelectionChangedSignal();
+  void DisconnectSelectionChangedSignal();
+
   NodeGraph* graph_;
 
+  struct AttachedItem {
+    NodeViewItem* item;
+    QPointF original_pos;
+  };
+
+  QList<AttachedItem> attached_items_;
+
+  NodeViewEdge* drop_edge_;
+  NodeInput* drop_input_;
+
+  NodeViewEdge* create_edge_;
+  NodeViewItem* create_edge_src_;
+  NodeViewItem* create_edge_dst_;
+  NodeInput* create_edge_dst_input_;
+  bool create_edge_dst_temp_expanded_;
+
+  NodeViewScene scene_;
+
+  QVector<Node*> selected_nodes_;
+
+  QVector<Block*> selected_blocks_;
+
+  enum FilterMode {
+    kFilterShowAll,
+    kFilterShowSelectedBlocks
+  };
+
+  FilterMode filter_mode_;
+
+  double scale_;
+
+private slots:
+  /**
+   * @brief Receiver for when the scene's selected items change
+   */
+  void SceneSelectionChangedSlot();
+
+  /**
+   * @brief Receiver for when the user right clicks (or otherwise requests a context menu)
+   */
+  void ShowContextMenu(const QPoint &pos);
+
+  /**
+   * @brief Receiver for when the user requests a new node from the add menu
+   */
+  void CreateNodeSlot(QAction* action);
+
+  /**
+   * @brief Receiver for setting the direction from the context menu
+   */
+  void ContextMenuSetDirection(QAction* action);
+
+  /**
+   * @brief Receiver for auto-position descendents menu action
+   */
+  void AutoPositionDescendents();
+
+  /**
+   * @brief Receiver for the user changing the filter
+   */
+  void ContextMenuFilterChanged(QAction* action);
+
 };
 
 }