Connection.h

#pragma once
 
#include <GuiFoundation/GuiFoundationDLL.h>
#include <GuiFoundation/NodeEditor/NodeScene.moc.h>
#include <QGraphicsPathItem>
 
class plPin;
 
class PL_GUIFOUNDATION_DLL plQtConnection : public QGraphicsPathItem
{
public:
  explicit plQtConnection(QGraphicsItem* pParent = 0);
  ~plQtConnection();
  virtual int type() const override { return plQtNodeScene::Connection; }
 
  const plDocumentObject* GetObject() const { return m_pObject; }
  const plConnection* GetConnection() const { return m_pConnection; }
  void InitConnection(const plDocumentObject* pObject, const plConnection* pConnection);
 
  void SetPosIn(const QPointF& point);
  void SetPosOut(const QPointF& point);
  void SetDirIn(const QPointF& dir);
  void SetDirOut(const QPointF& dir);
 
  virtual void UpdateGeometry();
  virtual QPen DeterminePen() const;
 
  const QPointF& GetInPos() const { return m_InPoint; }
  const QPointF& GetOutPos() const { return m_OutPoint; }
 
  bool m_bAdjacentNodeSelected = false;
 
  virtual void ExtendContextMenu(QMenu& ref_menu) {}
 
protected:
  virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) override;
 
  // Draws connections following the rules of subway maps (angles of 45 degrees only).
  void DrawSubwayPath(QPainterPath& path, const QPointF& startPoint, const QPointF& endPoint);
 
  const plDocumentObject* m_pObject = nullptr;
  const plConnection* m_pConnection = nullptr;
 
  QPointF m_InPoint;
  QPointF m_OutPoint;
  QPointF m_InDir;
  QPointF m_OutDir;
};