#pragma once
#include "item.h"

namespace NItem
{

class CItemCurveArc;

/**
 * 弧线、弓形、扇形绘制类
 */
class CItemArc :
	public CItem
{
	friend class CItemCurveArc;
public:
	CItemArc(CSigmaDoc * ppDoc);
	~CItemArc(void);

	void OnLButtonDown(CDC* pDC, UINT nFlags, CPoint point, int vk) override;
	int OnMouseMove(CDC* pDC, UINT nFlags, CPoint point) override;
	virtual BOOL DoSelectEnd(void);
	BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) override;
	BOOL OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) override;
	BOOL OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) override;
protected:
	int m_state;
	BOOL m_bDoSelectEnd;

	double m_dCurveWidth;
	CSize8 m_size;

public:
	int GetState(void);
	void SetState(int state);
	void Draw(CRect8 rect, CPoint2D ptStart, CPoint2D ptEnd);
	CArc* CreateArc(void);
private:
	CRect8 RectArc;
	CPoint2D PointStart, PointMiddle, PointEnd;
	int loop;
	BOOL m_bDrawCtrl;	//当CTRL键按下时,画另一方向
	int  m_nDrawType;
	bool m_bFirst;      //在鼠标移动事件处理函数，是否第一次画圆弧。
};

};