mypaintview.h

一个用VC++编写的绘图工具

// MyPaintView.h : interface of the CMyPaintView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_MYPAINTVIEW_H__8EF25019_D416_4C0C_BE61_A273F75A865F__INCLUDED_)
#define AFX_MYPAINTVIEW_H__8EF25019_D416_4C0C_BE61_A273F75A865F__INCLUDED_

#include "POSITION.H"
#include "ENTITY.H"
#include "COMMAND.H"

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class CMyPaintView : public CScrollView
{
protected: // create from serialization only
	CMyPaintView();
	DECLARE_DYNCREATE(CMyPaintView)

// Attributes
public:
	CMyPaintDoc* GetDocument();

	// 世界坐标与屏幕坐标的关系
	double	m_dOrgX, m_dOrgY;	// 世界坐标的原点坐标
	double	scale;				// 屏幕坐标到世界坐标的比例因子

	class CCommand* m_pCmd; 

	int m_nPageWidth, m_nPageHeight;	//

// Operations
public:
	// 世界坐标转换为屏幕坐标，输入：世界坐标pos， 输出：屏幕坐标screenPt
	void WorldtoScreen(const Position& pos, CPoint& screenPt); 
	// 屏幕坐标转换为世界坐标，输入：屏幕坐标screenPt， 输出：世界坐标pos
	void ScreentoWorld(const CPoint& screenPt, Position& pos);
	// 得到屏幕坐标到世界坐标的比例因子
	double GetScale();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CMyPaintView)
	public:
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual void OnInitialUpdate(); // called first time after construct
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
	//}}AFX_VIRTUAL
	afx_msg void OnCreateEntity(int m_nID);
	afx_msg void OnUpdateCreateCommand(CCmdUI* pCmdUI);
	afx_msg void OnModifyEntity(int m_nID);
	afx_msg void OnUpdateModifyCommand(CCmdUI* pCmdUI);

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

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CMyPaintView)
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnOptionPick();
	afx_msg void OnUpdateOptionPick(CCmdUI* pCmdUI);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in MyPaintView.cpp
inline CMyPaintDoc* CMyPaintView::GetDocument()
   { return (CMyPaintDoc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_MYPAINTVIEW_H__8EF25019_D416_4C0C_BE61_A273F75A865F__INCLUDED_)