drawview.h

在vc下编写的一个开发地理信息系统的程序

// DrawView.h : interface of the CDrawView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_DrawVIEW_H__0EFFC630_8953_11D2_AE7B_444553540000__INCLUDED_)
#define AFX_DrawVIEW_H__0EFFC630_8953_11D2_AE7B_444553540000__INCLUDED_

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

class CDrawCntrItem;
class CText;
class TextWriteDlg;


class CDrawView : public CView
{
protected: // create from serialization only
	CDrawView();
	DECLARE_DYNCREATE(CDrawView)

protected:
    float xLeft,xRight,yTop,yBottom,xPage,yPage,xWide,yHigh;
    int   nPageX,nPageY;
	int m_MapMode;
	int m_hScreen1,m_wScreen1;	//当前视图的高度和宽度
	CWinThread* m_PDrawThread;
	int nHScrollMax,nHScrollPos,nVScrollMax,nVScrollPos;
	int nXPage,nXLine,nYPage,nYLine,nScrollMin;
	float m_xStart,m_yStart,blc; //绘制图形时的起点坐标和比例尺
	int m_hScreen,m_wScreen;	//当前视图的高度和宽度
//	int m_CurrentScreen;		//当前屏幕的序号
//	int m_MaxScreen;			//最多能够有的屏幕数
	int m_DrawCurrent;			//当前正进行操作的序号
	int PushNumb;				//记录按下鼠标的次数
	ScreenStruct* p_Screen;		//记录屏幕参数的结构指针
	PointStruct *PointXyz;		//记录连续直线顶点坐标的数组指针
	CPoint mPointOrign,mPointOrign1,mPointOld;//记录鼠标移动时的鼠标点顶坐标
	short m_pColor;		//当前画笔颜色的序号
	short m_bColor;		//当前底色的序号
	short m_brColor;	//当前画刷颜色的序号
	short m_LineWide;	//当前直线宽度（像素）
	short m_LineType;	//当前线型
	short m_Layer;		//当前层
	BOOL b_RunFirst;			//是否第一次运行
	BOOL DrawArcYes;			
	//用来存储圆或圆弧的参数
	float m_CircleX,m_CircleY,m_CircleR,m_Angle1,m_Angle2;
	//用来存储标注文字的参数
	float m_FontHeight,m_FontWide,m_FontBetween,m_TextAngle,m_FontAngle;
	float m_TextX,m_TextY;
	CString m_TextString;	//存储标注的文字
	// Attributes
	CText *m_Text1;			//声明一个文字类
	CArc m_Arc1;	//声明一个圆弧类指针
	GraphSelectStruct GraphUndo[4];	//声明一个存储恢复信息的数组
	void InitVScroll();  //设定纵向滚动条
	void InitHScroll();  //设定横向滚动条
public:
	CLinkDataSet* m_pLinkSet;
	TextWriteDlg *pTextDlg;		//标注文字的对话框的指针
	CDrawDoc* GetDocument();	//得到文档类的指针
	// TODO: replace this selection mechanism with one appropriate to your app.
	CDrawCntrItem* m_pSelection;
public:
	void PutTracker(CDrawCntrItem* pItem,CRectTracker* pTracker);
	void DPtoVP(float x,float y,int *X,int *Y);
	void VPtoDP(int x,int y,float *X,float *Y);
	int DLtoVL(float l);
	float VLtoDL(int l);
protected:
	void DrawBack(CDC* pDC);	//用底色绘制屏幕
	BOOL jsarc(CPoint p1,CPoint p2,CPoint p3,float *CircleX,float *CircleY,
			float *CircleR,float *Angle1,float *Angle2);//由三个点计算圆弧参数
	void Delete(CDC* pDC,int Lb,int Index);	//删除图形操作
	BOOL RectCross(float *x1,float *y1,float *x2,float *y2,float xx1,
		float yy1,float xx2,float yy2);		//计算两个矩形的交面
	void ReDrawRect(float X1,float Y1,float X2,float Y2); //重新绘制视图的区域
	// Operations
public:
//	UINT Draw(CDC *pDC);

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CDrawView)
	public:
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	virtual void OnPrepareDC(CDC* pDC, CPrintInfo* pInfo = NULL);
	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);
	virtual BOOL IsSelected(const CObject* pDocItem) const;// Container support
	virtual void OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView);
	virtual void OnPrint(CDC* pDC, CPrintInfo* pInfo);
	//}}AFX_VIRTUAL

// Implementation
public:
	LPVOID bmpdata;
	HPALETTE hpal;
	HBITMAP bhm_ddb;
	int nPalate;
	void DrawBmp1(CDC* pDC,int x,int y,int wide,int high,UINT idCBitmap,int DrawMode);
	void DrawBmp2(CDC* pDC,int x,int y,int wide,int high,char *fName,int DrawMode);
	void DrawBmp3(CDC* pDC,int x,int y,int wide,int high,char *fName,int DrawMode);
	void DIBtoDDB(HDC hdc);
	void make_palette();

	virtual ~CDrawView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CDrawView)
	afx_msg void OnDestroy();
	afx_msg void OnSetFocus(CWnd* pOldWnd);
	afx_msg void OnSize(UINT nType, int cx, int cy);//视图大小改变时调用	
	afx_msg void OnInsertObject();	
	afx_msg void OnCancelEditCntr();
	afx_msg void OnDrawArc();		//绘制圆弧
	afx_msg void OnDrawCircle();	//绘制圆
	afx_msg void OnDrawCircle1();	//绘制圆形区域（填充圆）
	afx_msg void OnDrawLine();		//绘制直线
	afx_msg void OnDrawPline();		//绘制连续直线
	afx_msg void OnDrawRgn();		//绘制多边形区域
	afx_msg void OnDrawText();		//标注文字
	afx_msg void DrawText();//在标注文字对话框中填入文字时被调用在屏幕上写文字
	afx_msg void DrawTextOnOk();	//按‘确定'退出标注文字对话框时被调用
	afx_msg void DrawTextOnCancel();//按‘放弃'退出标注文字对话框时被调用
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);//按下鼠标左键时调用
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);  //鼠标移动时调用	
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);//按下鼠标右键时调用
	afx_msg void OnGraphRedraw();	//图形重画
	afx_msg void OnGraphZoom();		//图形放大
	afx_msg void OnGraphPan();		//图形移动
	afx_msg void OnGraphUp();		//重画上屏图形
	afx_msg void OnGraphFirst();	//重画首屏图形
	afx_msg void OnGraphAll();		//重画全屏
	afx_msg void OnSelectMouse();	//运行鼠标选中图形
	afx_msg void OnSelectClear();	//放弃选中图形
	afx_msg void OnSelectDelete();	//删除选中图形
	afx_msg void OnEditCut();		//裁剪选中图形进裁剪板
	afx_msg void OnEditPaste();		//粘贴图形
	afx_msg void OnEditUndo();		//逆向放弃操作
	afx_msg void OnEditCopy();		//拷贝选中图形进裁剪板
	afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnBitmapCut();
	afx_msg void OnBitmapPaste();
	afx_msg void OnUpdateEditPaste(CCmdUI* pCmdUI);
	afx_msg void OnGraphDraw();
	afx_msg void OnChangeDlgEdit();
	afx_msg void OnChangeDlgCom();
	afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg void OnDataSeacher();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in DrawView.cpp
inline CDrawDoc* CDrawView::GetDocument()
   { return (CDrawDoc*)m_pDocument; }
#endif

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

//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_DrawVIEW_H__0EFFC630_8953_11D2_AE7B_444553540000__INCLUDED_)