SoView2DSlicer.h

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/*************************************************************************************
**
** Copyright 2007, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 

 
#pragma once
 
#include "SoView2DInteractionExtension.h"
#include <Inventor/fields/SoSFInt32.h>
 
class SoView2DSlicerOffsetAction;

class SOVIEW2D_API SoView2DSlicer : public SoView2DInteractionExtension
{
  SO_NODE_HEADER(SoView2DSlicer);
 
public:
  SoSFFloat sensitivity;

  static void   initClass();

  SoView2DSlicer();

  SoSFBool permitInteractionOutsideImage;

  void   updateValues() override;

  bool   evalEvent(SoView2D* view2d, View2DSliceList* slicelist,
    View2DEvent* ec, View2DEventPhase phase) override;

  bool modifyStartSlice(SoView2D* view2d, int offset);
  static bool modifyTimePoint(SoView2D* view2d, int offset);

  SoSFInt32 stepSize;
 
protected:
  void doSliceByMouse(float diffY, SoView2D* view2d);

  void startPressAt(const SoPointerPosition& pos) override;
  void dragMoveTo(const SoPointerPosition& pos) override;
  SoPointingAction* endPress(int clickCount) override;

  void editingOnChanged(SoField* field) override;

  virtual void sensitivityChanged(SoField* field);

  float  _oldY;
  float  _sumY;
  unsigned _prevWheelCode;
  int    _sumWheel;

  SoView2DSlicerOffsetAction* _offsetAction;
};