#pragma once
#include "CurveEditorBase.h"

namespace NItem
{

/*
 * ???????????????????¦¶???
 *
 * ???????
 *   1. ???????????¦¶???????????????????9????¦Ë??
 *   2. ????????????????????????
 *   3. ?????????????????Default?????
 */
class CurveEditorLinear : public CurveEditorBase
{
 public:
  CurveEditorLinear(CSigmaDoc* pDoc) : CurveEditorBase(pDoc) {}
  virtual ~CurveEditorLinear(void) {}

 protected:
  // ??????????????????????????.
  // ??§Õ???? virtual void OnDrawDragPreview()
  void OnDrawDragPreview() override;

  // ???????????????????¦¶???
  void OnCalculateDragEffect(CPointList* pList) override;

 private:
  // ???????????????
  double GetPointOffset(double offset, int nMode);
  void GetDragPoint(CPoint2D& dp, CPointList& NewPointList, int& begin,
                    int& end);
};

};  // namespace NItem