MeVisLab/Standard/Sources/Inventor/SoView2D/extensions/SoView2DAutoCenter.h

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#ifndef __SoView2DAutoCenter_H
#define __SoView2DAutoCenter_H
// **InsertLicense** code
//----------------------------------------------------------------------------------
//----------------------------------------------------------------------------------

#ifndef __SoView2DInteractionExtension_H
#include "SoView2DInteractionExtension.h"
#endif

#include <Inventor/sensors/SoFieldSensor.h>


class SOVIEW2D_API SoView2DAutoCenter : public SoView2DInteractionExtension {

  SO_NODE_HEADER(SoView2DAutoCenter);

public:
  static void   initClass();

  SoView2DAutoCenter();
  ~SoView2DAutoCenter();

  SoSFTrigger triggerResetZoom;

  virtual void   startDrawing(View2DSliceList *slicelist);

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

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

  static void timerSensorCB(void *data, SoSensor *sensor);

protected:
  void startCenter(SoView2D* view2d, const SbVec3f& voxelPos, bool isInImage);
  void endCenter();


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

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

  SoTimerSensor* _timer;
  SoView2D*      _zoomView;

private:

  bool _shouldUnzoom;

  void _resetZoom();

  SoFieldSensor* _triggerResetZoomSensor;

  static void triggerResetZoomCB(void *data, SoSensor* a);

};

#endif