MeVisLab/Standard/Sources/Inventor/SoView2D/extensions/SoView2DRectangle.h

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#ifndef __SoView2DRectangle_H
#define __SoView2DRectangle_H
//----------------------------------------------------------------------------------
// **InsertLicense** code
//----------------------------------------------------------------------------------

//----------------------------------------------------------------------------------

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

#include <XVEnterScope.h>
#include <Inventor/fields/SoSFVec3f.h>
#include <XVLeaveScope.h>

class SOVIEW2D_API SoView2DRectangle : public SoView2DInteractionExtension {

  SO_NODE_HEADER(SoView2DRectangle);

public:


  SoSFVec3f startWorldPos;
  SoSFVec3f endWorldPos;

  SoSFFloat blendInside;
  SoSFFloat blendOnto;
  SoSFFloat blendOutside;
  SoSFFloat lineBlendInside;
  SoSFFloat lineBlendOnto;
  SoSFFloat lineBlendOutside;

  SoSFBool resetToImage;

  SoSFBool selectOutside;

  SoSFBool allowDrag;

  SoSFBool  cooperative;

  SoSFFloat shadeExterior;


  static void   initClass();

  SoView2DRectangle();

  void   draw(View2DSliceList *dsl, View2DSlice* dslice, int slice);
  bool   evalEvent(SoView2D* view2d, View2DSliceList* slicelist,
    View2DEvent* ec, View2DEventPhase phase);
  
  bool ignoreEvent(View2DEvent* ec);

protected:
  enum DragMode {DragNothing, DragAnyPoint, DragRect, DragCreateRect};

  DragMode performHitTest(int dx1, int dy1, const SbVec3f& voxelPos, View2DSliceList* slicelist);

  void performDrag(const SbVec3f& voxelPos, bool setStart, View2DSliceList* slicelist);


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

  DragMode _dragMode;



  bool _xhigher;
  bool _yhigher;

  bool _dragx;
  bool _dragy;

  SbVec3f _lastWorldPos;

  bool  _draggingInCooperativeMode;
};

#endif