fgscaledraw.h

用Visual c++来绘制地理学信息系统gis中的比例尺符号

// FGScaleDraw.h: interface for the CFGScaleDraw class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_FGSCALEDRAW_H__C7189EBA_6946_4CA1_AF5D_1342E1C35509__INCLUDED_)
#define AFX_FGSCALEDRAW_H__C7189EBA_6946_4CA1_AF5D_1342E1C35509__INCLUDED_

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

//比例尺的种类
enum FGScaleType
{
	ST_SINGLELINE,
	ST_SINGLELINE2,
	ST_SINGLELINE3,
	ST_FILLRECT,
	ST_FILLRECT2,
	ST_STEPPEDLINE,
	ST_LINERECT
};

class CFGScaleDraw  
{
public:
	CFGScaleDraw();
	virtual ~CFGScaleDraw();

	FGScaleType m_ScaleType;
	float m_fScale;			//比例尺分母：1/m_fScale,1:10000的比例尺，m_fScale = 10000

	int m_nMinX, m_nMaxX, m_nMinY, m_nMaxY;

public:
	void SetScaleType(int type);
	void SetScale(float scale);
	void SetRect(CRect rect);
	void SetRect(int minx, int miny, int maxx, int maxy);

	void DrawScale(CDC* pdc);

};

#endif // !defined(AFX_FGSCALEDRAW_H__C7189EBA_6946_4CA1_AF5D_1342E1C35509__INCLUDED_)