VP1GraphicsView.h

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/

//                                                         //
//  Header file for class VP1GraphicsView                  //
//                                                         //
//  Author: Thomas Kittelmann <Thomas.Kittelmann@cern.ch>  //
//                                                         //
//  Initial version: April 2007                            //
//                                                         //
 
#ifndef VP1GRAPHICSVIEW_H
#define VP1GRAPHICSVIEW_H
 
#include <QGraphicsView>
 
class VP1GraphicsItemCollection;
 
class VP1GraphicsView : public QGraphicsView {
 
  Q_OBJECT
 
public:

 
  VP1GraphicsView ( QWidget * parent = 0 );
  VP1GraphicsView ( QGraphicsScene * scene, QWidget * parent = 0 );
 
  //Get interaction mode:
  enum Mode { PICK, CHANGEVIEW, SEEK, DRAGZOOM, DRAGZOOMHOLD };
  Mode mode() const;
 
public Q_SLOTS:
 
  //What collections to show:
  void addItemCollection(VP1GraphicsItemCollection*);
  void removeItemCollection(VP1GraphicsItemCollection*);
 
  //Set interaction mode for the view:
  void setMode(const Mode&);
 
  //Potentially limit the interactive capabilities of given itemcollections:
  void setDisallowInteractions(VP1GraphicsItemCollection*, const bool& disallow=true );//If true, the ic will act as INERT
  void setDisallowMovable(VP1GraphicsItemCollection*, const bool& disallow=true );//If true, items will never be movable.
 
  //Zoom:
  void scaleView(qreal scaleFactor);
  void fitViewToContents();
  void viewHome();
  void setHome();
 
  //Animated zoom:
  void initiateAnimatedZoomTo(QRectF);
  void setAnimatedZoomSteps(int);
  void setAnimatedZoomTime(double);//ms
  void setZoomFactorOnSeek(double);
  void abortZoomAnimation();
  void seekToPoint(QPointF);
 
  //Selections:
  void clearSelections();
 
  //Print:
  void print();
  void saveImage();

 
public:
  virtual ~VP1GraphicsView();
 
protected:
  void keyPressEvent(QKeyEvent *);
  void wheelEvent(QWheelEvent *);
  void mouseDoubleClickEvent(QMouseEvent * event);
  void mousePressEvent(QMouseEvent *);
  void mouseReleaseEvent(QMouseEvent *);
  void mouseMoveEvent(QMouseEvent *);
  void drawItems(QPainter *painter, int numItems,
         QGraphicsItem *items[],
         const QStyleOptionGraphicsItem options[]);
  void drawForeground ( QPainter * painter, const QRectF & rect );
private:
 
  class Imp;
  Imp * m_d;
  class HighLightItem;
  friend class HighLightItem;
  void emitSelectionChanged(VP1GraphicsItemCollection*);
 
private Q_SLOTS:
  void updateZoomAnimation();
};
 
#endif