font.h

用FREE BASIC做的演示程序

#ifndef GPP_BLUE_DREAM_FONT_H_
#define GPP_BLUE_DREAM_FONT_H_
#include<string>
using namespace std;
const unsigned long  GPP_FONT_MAX_HEIGHT=16;
const unsigned short GPP_FONT_FILE_ID='GF';
class GLayer;
class GScreen;
class GFileLoader;
class GFont
{
public:
	struct GFontFileHeader
	{
		unsigned short	wID;				//字体文件ID
		unsigned char	byVerMajor;			//主版本号
		unsigned char	byVerMinon;			//次版本号
		unsigned char	byFontWidth;		//字体宽,不得>16
		unsigned char	byFontHeight;		//字体高,不得>16
		unsigned char	Reserve[2];			//保留
		unsigned long	dwFontDataSize;		//字体数据大小
	};
public:
	GFont();
	virtual ~GFont();
	inline unsigned char GetFontWidth(){return m_ffh.byFontWidth;}
	inline unsigned char GetFontHeight(){return m_ffh.byFontHeight;}
	inline unsigned short*GetFontData(){return m_pFontData;}
	inline unsigned short*GetAscIIChar(unsigned char index){return m_pFontData+(index<<4);}
	inline unsigned short*GetUnicode(unsigned char u1,unsigned char u2){return m_pFontData+((((u1-128)<<8)+u2+128)<<4);}
	bool LoadFontFile(GFileLoader*pFileLoader,const string & szFileName);
	bool SaveFontDataToFile(const string &strFontFile,const GFontFileHeader & fh,unsigned char*pData);
	
	void DrawTextFastToScreen(GScreen*pScreen,int x,int y,int nLineChar,unsigned char byColorIndex,char*szText);
	void DrawTextFormatToScreen(GScreen*pScreen,int x,int y,int nLineChar,unsigned char byColorIndex,char*szText,...);	
	static const unsigned long C_FONT_MASK[];
private:
	GFontFileHeader		m_ffh;
	unsigned short		*m_pFontData;
};
#endif