#pragma once

#define MM_NONE 0	// from MFC viewscrl.cpp

// CVisDrawScrollView 視圖

class CVisDrawScrollView : public CScrollView
{
	

protected:
	CVisDrawScrollView();           // 動態(tài)創(chuàng)建所使用的受保護的構(gòu)造函數(shù)
	DECLARE_DYNCREATE(CVisDrawScrollView)

	virtual ~CVisDrawScrollView();


	//屬性
protected:
	
	CSize m_TotalSize;
	BOOL m_bExtendX;
	BOOL m_bExtendY;
	long m_Delta;
	CPoint m_Offset;
    CPoint m_Center;
	CSize m_Ratio;
 




protected:
	
	CSize  GetTotalSize() const;					// [vlu]

	//重載函數(shù)
	void   SetScrollSizes(int nMapMode, SIZE sizeTotal, const SIZE& sizePage = sizeDefault, const SIZE& sizeLine = sizeDefault);
	void   SetScaleToFitSize(SIZE sizeTotal);		// sizeTotal [vlu]

	void   CenterOnPoint(CPoint Center);			// Center [vlu]
	CPoint GetScrollPosition() const;				// [vlu]
	void   ScrollToPosition(POINT Point);			// Point [vlu]
	CPoint GetDeviceScrollPosition() const;

public:
	void DocToClient(CRect& rect);
	void DocToClient(CPoint& point);
	void ClientToDoc(CPoint& point);
	void ClientToDocDraw(CPoint& point);
	void ClientToDoc(CRect& rect);
	void ClientToDocDraw(CRect& rect);

protected:

	CPoint GetDeviceOrg() const;					// [du]
	void   GetLogClientRect(CRect *pRect) const;	// [vlu]
	CPoint GetLogPosition(CPoint Point) const;		// [vlu]
	void GetLogPosition(CRect &rect);				// [vlu]
	CPoint GetLogClientCenter() const;				// [vlu]

	void SaveClientCenter();
	void RestoreClientCenter();




public:
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:
//	virtual void OnDraw(CDC* pDC){CVisDrawScrollView::OnDraw(pDC);};      // 重寫以繪制此視圖
	virtual void OnDraw(CDC* pDC);      // 重寫以繪制此視圖
	DECLARE_MESSAGE_MAP()

public:
	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
	virtual void OnPrepareDC(CDC* pDC, CPrintInfo* pInfo = NULL);
};