//////////////////////////////////////////////////////////////////////////////
//文件: CItem类扩展
//主要功能: 
//		操作各类元素或完成一定的功能
//
//程序编写:		2006-12-07
//
//
/////////////////////////////////////////////////////////////////////////////

#pragma once
#include "itemBase.h"
#include "cursor.h"
#include "DrawOperator\memdc.h"

namespace NDrawView
{

#define ITEM_VIEW_DEFAULT		0
#define ITEM_VIEW_PRINT			1

class CItemView :
	public CItemBase
{
public:
	CItemView(void);
	CItemView(CSigmaDoc * ppDoc);
	virtual ~CItemView(void);

	void OnLButtonDown(CDC *pDC, UINT nFlags, CPoint point, int vk) override;
	void OnLButtonUp(CDC *pDC, UINT nFlags, CPoint point, int vk) override;
	int OnMouseMove(CDC *pDC, UINT nFlags, CPoint point) override;
	void OnRButtonDblClk(UINT nFlags, CPoint point) override;
	void OnRButtonDown(UINT nFlags, CPoint point) override;
	BOOL OnRButtonUp(UINT nFlags, CPoint point) override;
	BOOL OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) override;
	BOOL OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) override;
	BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) override;

	//<打印及打印预览>
	void SetScreenRect(CRect rect);
	virtual void OnLButtonDownForPreviewPrint(UINT nFlags, CPoint point);
	virtual void OnLButtonUpForPreviewPrint(UINT nFlags, CPoint point);
	virtual void OnMouseMoveForPreviewPrint(UINT nFlags, CPoint point);
	void ScreenToPrint(CPoint & point);
	void GetViewFactors(double & offsetXOut, double & offsetYOut, double & zoomFactorOut);
	void SetViewFactors(double offsetX, double offsetY, double zoomFactor);
	void SetViewScreenFactors(double offsetX, double offsetY, double zoomFactor);
	// 变换到原始坐标
	double TransfromX(double x);
	double TransfromY(double y);
	CRect TransfromRect(CRect rtSource);

	double DeTransfromX(double x);
	double DeTransfromY(double y);
	// 转换到变换坐标
	CRect DeTransfromRect(CRect rtSource);
	//</打印及打印预览>

	void SetMemDC(CMemoryDC*	pMemViewDC) {
		m_pMemViewDC = pMemViewDC;
	}
	CDC			*	GetMemDC(void) { return m_pMemViewDC; }
	virtual CRect GetClientRect(void);
	virtual void setClientRect(CRect rect);
	virtual int GetPanMode(void);
	virtual BOOL GetViewRange(CRect8& rect);		//获得要全图显示的范围

	eCursorSelectStruct GetCursor(void);
	int IsViewState(void);

	void Extend(int mode);
	void Enlarge(void);
	void Reduce(void);
	void Reduce(double factor);

	/**
	 * 放大画布
	 * 
	 * \param point 放大的中心点
	 * \param factor 放大倍数，事实上缩小也是它，小于 1 时为缩小
	 */
	void Reduce(CPoint2D point, double factor);
	void ReduceForScreenPoint();
	void PanTo(CPoint2D point);					//移动到point,以point为中心

	void EnableOldMode(BOOL bEnable);
	BOOL IsOldMode(void);
public:
	CView* GetActiveView(void);
	BOOL IsCaptureCursor(void);
	void SetDisplayRange(void);
	int zoomMode;
protected:
	CPoint m_ptLeft;
	CRect8 m_rect;
	CRect8 m_rectForPrint;
	CRect  m_scressRect;
	CRect  m_clientRect;
	BOOL   bCaptureCursor;
//	CMemoryDC m_MemDC;
	BOOL m_bRButtonDown;
	BOOL m_bEnableCaptureCursor;
	BOOL m_bOldViewMode;
	//int m_type;
	CMemoryDC*	m_pMemViewDC;
	double m_offsetX;
	double m_offsetY;
	double m_zoomFactor;

	double m_offsetScreenX;
	double m_offsetScreenY;
	double m_screenFactor;

	void LButtonDownPan(CPoint point);
	void MouseMovePan(CPoint point);
	void MouseMovePanForPreviewPrint(CPoint point);
	void LButtonUpPan(CPoint point);
	void RectangleSolid(CXyDC* pDC, CRect8* pRect);
};

};