SoView2DAutoCenter.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/sensors/SoFieldSensor.h>
 
class SoField;

 
class SOVIEW2D_API SoView2DAutoCenter : public SoView2DInteractionExtension
{
  SO_NODE_HEADER(SoView2DAutoCenter);
 
public:
  static void   initClass();
 
  SoView2DAutoCenter();
  ~SoView2DAutoCenter() override;

  SoSFTrigger triggerResetZoom;

  void   startDrawing(View2DSliceList *slicelist) override;

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

  void draw(View2DSliceList *slicelist, View2DSlice* slice, int sliceZ) override;

  static void timerSensorCB(void *data, SoSensor *sensor);
 
protected:
  void startCenter(SoView2D* view2d, const SbVec3f& voxelPos, bool isInImage);
  void endCenter();

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

  float _newcenterx;
  float _newcentery;
  bool  _gotoOn;
  bool  _shouldReset;

  SoTimerSensor* _timer;
  SoView2D*      _zoomView;
 
private:

  bool _shouldUnzoom;

  void _resetZoom(SoField* field = nullptr);
};