www.pudn.com > 基于TWAIN接口程序.zip > DIB.h

#ifndef __DIB 
#define __DIB 
 
 
 
class CDIB  
{ 
public: 
	enum BitmapType 
	{ 
		BMP, 
		GIF, 
		TIFF 
	}; 
	CDIB(HANDLE hDib=NULL,int nBits=8); 
	virtual ~CDIB(); 
	CDIB& operator=(CDIB& dib); 
	BOOL IsValid() { return (m_pVoid && Width() && Height());}; 
	void UseGamma(float fg,BOOL bUse=TRUE); 
	BOOL CreateFromHandle(HANDLE hDib,int nBits); 
	BOOL Create(int width,int height,int bits=24); 
	BOOL Create(BITMAPINFOHEADER& bmInfo); 
	BOOL CopyDIB(CDIB& dib); 
	BOOL OpenDIB(CString& fileName); 
	BOOL SaveDIB(CString& fileName,BitmapType type); 
	void ReplaceColor(unsigned char oldColor,unsigned char newColor); 
	HANDLE GetDIBits(int nStartX=-1,int nStartY=-1,int nCx=-1,int nCy=-1); 
	CBitmap *GetBitmap(CDC& dc); 
	CBitmap *GetTempBitmap(CDC& dc); 
	DWORD GetDIBSize(); 
	int GetPaletteSize(BITMAPINFOHEADER& bmInfo); 
	int GetPaletteSize(); 
	int CountColors(); 
	int EnumColors(BYTE *colors); 
	void InitDIB(COLORREF color); 
	void CopyLine(int source,int dest); 
	void DestroyDIB(); 
	void SetPalette(unsigned char *palette); 
	void SetPalette(RGBQUAD *pRGB); 
	COLORREF PaletteColor(int index); 
	void SetPixel(int x,int y,COLORREF color); 
	void SetPixel8(int x,int y,unsigned char color); 
	COLORREF GetPixel(int x,int y); 
	void GetPixel(UINT x,UINT y,int& pixel); 
	void BitBlt(HDC hDest,int nXDest,int nYDest,int nWidth,int nHeight,int xSrc,int ySrc); 
	void BitBlt(int nXDest,int nYDest,int nWidth,int nHeight,CDIB& dibSrc,int nSrcX,int nSrcY,BYTE *colors=NULL); 
	void StretchBlt(HDC hDest,int nXDest,int nYDest,int nDWidth,int nDHeight,int xSrc,int ySrc,int  nSWidth,int nSHeight); 
	void StretchBlt(int nXDest,int nYDest,int nDWidth,int nDHeight,CDIB& dibSrc,int xSrc,int ySrc,int  nSWidth,int nSHeight); 
	void ExpandBlt(int nXDest,int nYDest,int xRatio,int yRatio,CDIB& dibSrc,int xSrc,int ySrc,int  nSWidth,int nSHeight); 
	void SetFlags(int flag) { m_nFlags = flag; }; 
	int Height() { return height ; }; 
	int Width() { return width ; }; 
	unsigned char *GetLinePtr(int line);	 
	inline int GetBitCount() {return m_pInfo->bmiHeader.biBitCount;}; 
	BOOL Make8Bit(CDIB& dib); 
	BOOL SwitchFromOne(CDIB& dib); 
	BOOL SwitchFromFour(CDIB& dib); 
	BOOL SwitchFrom24(CDIB& dib); 
	BOOL SwitchPalette(CDIB& dib); 
	int  ClosestColor(RGBQUAD *pRgb); 
	LPBITMAPINFO GetBitmapInfo() { return m_pInfo;}; 
	static unsigned int Distance(RGBQUAD& rgb1,RGBQUAD& rgb2); 
protected : 
	HANDLE DIBHandle(); 
	BOOL OpenBMP(CString& csFileName); 
	BOOL OpenGIF(CString& csFileName); 
	BOOL OpenTIFF(CString& csFileName); 
	BOOL SaveBMP(CString& csFileName); 
	BOOL SaveGIF(CString& csFileName); 
	BOOL SaveTIFF(CString& csFileName); 
	void CreateGammaCurve(); 
	void Expand(int nXDest,int nYDest,int xRatio,int yRatio,CDIB& dibSrc,int xSrc,int ySrc,int  nSWidth,int nSHeight); 
	unsigned char *m_pBits; 
	PBITMAPINFO m_pInfo; 
	RGBQUAD *m_pRGB; 
	void *m_pVoid;  
	BYTE **m_pLinePtr; 
	int height,bytes,width,m_nBits; 
	int m_nFlags; 
	BOOL m_bUseGamma; 
	float m_fGamma; 
	float m_fOldGamma; 
	unsigned char Gamma[256]; 
	RGBQUAD CacheQuad[256]; 
	char CachePtr[256]; 
}; 
 
 
#endif