ximage.h

电驴的源代码

	DWORD	GetEncodeOption() const {return info.dwEncodeOption;}
	void	SetEncodeOption(DWORD opt) {info.dwEncodeOption = opt;}

	DWORD	GetFlags() const {return info.dwFlags;}
	void	SetFlags(DWORD flags, bool bLockReservedFlags = true);

	//void*	GetUserData() const {return info.pUserData;}
	//void	SetUserData(void* pUserData) {info.pUserData = pUserData;}

	//palette operations
	bool	IsGrayScale();
	bool	IsIndexed() {return head.biClrUsed!=0;}
	DWORD	GetPaletteSize();
	RGBQUAD* GetPalette() const;
	RGBQUAD GetPaletteColor(BYTE idx);
	bool	GetPaletteColor(BYTE i, BYTE* r, BYTE* g, BYTE* b);
	BYTE	GetNearestIndex(RGBQUAD c);
	void	BlendPalette(COLORREF cr,long perc);
	void	SetGrayPalette();
	void	SetPalette(DWORD n, BYTE *r, BYTE *g, BYTE *b);
	void	SetPalette(RGBQUAD* pPal,DWORD nColors=256);
	void	SetPalette(rgb_color *rgb,DWORD nColors=256);
	void	SetPaletteColor(BYTE idx, BYTE r, BYTE g, BYTE b, BYTE alpha=0);
	void	SetPaletteColor(BYTE idx, RGBQUAD c);
	void	SetPaletteColor(BYTE idx, COLORREF cr);
	void	SwapIndex(BYTE idx1, BYTE idx2);
	void	SetStdPalette();

	//pixel operations
	bool	IsInside(long x, long y);
	BYTE	GetPixelIndex(long x,long y);
	RGBQUAD GetPixelColor(long x,long y);
	void	SetPixelColor(long x,long y,RGBQUAD c, bool bEditAlpha = false);
	void	SetPixelIndex(long x,long y,BYTE i);
	void	SetPixelColor(long x,long y,COLORREF cr);
	BYTE	GetPixelGray(long x, long y);

	//painting operations
#if CXIMAGE_SUPPORT_WINCE
	long	Blt(HDC pDC, long x=0, long y=0);
#endif
#if CXIMAGE_SUPPORT_WINDOWS
	HBITMAP MakeBitmap(HDC hdc = NULL);
	HANDLE	CopyToHandle();
	bool	CreateFromHANDLE(HANDLE hMem);		//Windows objects (clipboard)
	void	CreateFromHBITMAP(HBITMAP hbmp);	//Windows resource
	void	CreateFromHICON(HICON hico);
	long	Draw(HDC hdc, long x=0, long y=0, long cx = -1, long cy = -1, RECT* pClipRect = 0);
	long	Draw(HDC hdc, const RECT& rect, RECT* pClipRect=NULL) { return Draw(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, pClipRect); }
	long	Stretch(HDC hdc, long xoffset, long yoffset, long xsize, long ysize);
	long	Stretch(HDC hdc, const RECT& rect) { return Stretch(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); }
	long	Tile(HDC hdc, RECT *rc);
	long	Draw2(HDC hdc, long x=0, long y=0, long cx = -1, long cy = -1);
	long	Draw2(HDC hdc, const RECT& rect) { return Draw2(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); }
	long	DrawText(HDC hdc, long x, long y, const char* text, RGBQUAD color, const char* font, long lSize=0, long lWeight=400, BYTE bItalic=0, BYTE bUnderline=0);
#endif //CXIMAGE_SUPPORT_WINDOWS

	// file operations
#if CXIMAGE_SUPPORT_DECODE
#ifdef WIN32
	bool Load(LPCWSTR filename, DWORD imagetype=0);
	bool LoadResource(HRSRC hRes, DWORD imagetype, HMODULE hModule=NULL);
#endif
	bool Load(const char * filename, DWORD imagetype=0);
	bool Decode(FILE * hFile, DWORD imagetype);
	bool Decode(CxFile * hFile, DWORD imagetype);
	bool Decode(BYTE * buffer, DWORD size, DWORD imagetype);
#endif //CXIMAGE_SUPPORT_DECODE

#if CXIMAGE_SUPPORT_ENCODE
#ifdef WIN32
	bool Save(LPCWSTR filename, DWORD imagetype=0);
#endif
	bool Save(const char * filename, DWORD imagetype=0);
	bool Encode(FILE * hFile, DWORD imagetype);
	bool Encode(CxFile * hFile, DWORD imagetype);
	bool Encode(CxFile * hFile, CxImage ** pImages, int pagecount, DWORD imagetype);
	bool Encode(FILE *hFile, CxImage ** pImages, int pagecount, DWORD imagetype);
	bool Encode(BYTE * &buffer, long &size, DWORD imagetype);
#endif //CXIMAGE_SUPPORT_ENCODE

	//misc.
	bool IsValid() const {return pDib!=0;}
	bool IsEnabled() const {return info.bEnabled;}
	void Enable(bool enable=true){info.bEnabled=enable;}

	// frame operations
	long GetNumFrames() const {return info.nNumFrames;}
	long GetFrame() const {return info.nFrame;}
	void SetFrame(long nFrame) {info.nFrame=nFrame;}

#if CXIMAGE_SUPPORT_BASICTRANSFORMATIONS
	bool GrayScale();
	bool Flip();
	bool Mirror();
	bool Negative();
	bool RotateLeft(CxImage* iDst = NULL);
	bool RotateRight(CxImage* iDst = NULL);
#endif //CXIMAGE_SUPPORT_BASICTRANSFORMATIONS

#if CXIMAGE_SUPPORT_TRANSFORMATION
	// image operations
	bool Rotate(float angle, CxImage* iDst = NULL);
	bool Rotate180(CxImage* iDst = NULL);
	bool Resample(long newx, long newy, int mode = 1, CxImage* iDst = NULL);
	bool DecreaseBpp(DWORD nbit, bool errordiffusion, RGBQUAD* ppal = 0);
	bool IncreaseBpp(DWORD nbit);
	bool Dither(long method = 0);
	bool Crop(long left, long top, long right, long bottom, CxImage* iDst = NULL);
	bool Crop(const RECT& rect, CxImage* iDst = NULL) { return Crop(rect.left, rect.top, rect.right, rect.bottom, iDst); }
	bool Skew(float xgain, float ygain, long xpivot=0, long ypivot=0);
protected:
	float b3spline(float x);
public:
#endif //CXIMAGE_SUPPORT_TRANSFORMATION

#if CXIMAGE_SUPPORT_DSP
	bool Contour();
	bool HistogramStretch();
	bool HistogramEqualize();
	bool HistogramNormalize();
	bool HistogramRoot();
	bool HistogramLog();
	long Histogram(long* red, long* green = 0, long* blue = 0, long* gray = 0, long colorspace = 0);
	bool Jitter(long radius=2);
	bool Repair(float radius = 0.25f, long niterations = 1, long colorspace = 0);
	bool Combine(CxImage* r,CxImage* g,CxImage* b,CxImage* a, long colorspace = 0);
	bool FFT2(CxImage* srcReal, CxImage* srcImag, CxImage* dstReal, CxImage* dstImag, long direction = 1, bool bForceFFT = true, bool bMagnitude = true);
	bool Noise(long level);
	bool Median(long Ksize=3);
	bool Gamma(float gamma);
	bool ShiftRGB(long r, long g, long b);
	bool Threshold(BYTE level);
	bool Colorize(BYTE hue, BYTE sat);
	bool Light(long brightness, long contrast = 0);
	float Mean();
	bool Filter(long* kernel, long Ksize, long Kfactor, long Koffset);
	bool Erode(long Ksize=2);
	bool Dilate(long Ksize=2);
	void HuePalette(float correction=1);
	enum ImageOpType { OpAdd, OpAnd, OpXor, OpOr, OpMask, OpSrcCopy, OpDstCopy, OpSub, OpSrcBlend };
	void Mix(CxImage & imgsrc2, ImageOpType op, long lXOffset = 0, long lYOffset = 0);
protected:
	bool IsPowerof2(long x);
	bool FFT(int dir,int m,double *x,double *y);
	bool DFT(int dir,long m,double *x1,double *y1,double *x2,double *y2);
	bool RepairChannel(CxImage *ch, float radius);
public:
	//color conversion utilities
	bool SplitRGB(CxImage* r,CxImage* g,CxImage* b);
	bool SplitYUV(CxImage* y,CxImage* u,CxImage* v);
	bool SplitHSL(CxImage* h,CxImage* s,CxImage* l);
	bool SplitYIQ(CxImage* y,CxImage* i,CxImage* q);
	bool SplitXYZ(CxImage* x,CxImage* y,CxImage* z);
	bool SplitCMYK(CxImage* c,CxImage* m,CxImage* y,CxImage* k);
	RGBQUAD HSLtoRGB(COLORREF cHSLColor);
	RGBQUAD RGBtoHSL(RGBQUAD lRGBColor);
	RGBQUAD HSLtoRGB(RGBQUAD lHSLColor);
	RGBQUAD YUVtoRGB(RGBQUAD lYUVColor);
	RGBQUAD RGBtoYUV(RGBQUAD lRGBColor);
	RGBQUAD YIQtoRGB(RGBQUAD lYIQColor);
	RGBQUAD RGBtoYIQ(RGBQUAD lRGBColor);
	RGBQUAD XYZtoRGB(RGBQUAD lXYZColor);
	RGBQUAD RGBtoXYZ(RGBQUAD lRGBColor);
#endif //CXIMAGE_SUPPORT_DSP
	RGBQUAD RGBtoRGBQUAD(COLORREF cr);
	COLORREF RGBQUADtoRGB (RGBQUAD c);

#if CXIMAGE_SUPPORT_SELECTION
	//selection
	bool SelectionClear();
	bool SelectionCreate();
	bool SelectionDelete();
	bool SelectionInvert();
	bool SelectionAddRect(RECT r);
	bool SelectionAddEllipse(RECT r);
	bool SelectionAddPolygon(POINT *points, long npoints);
	bool SelectionAddColor(RGBQUAD c);
	bool SelectionCopy(CxImage &from);
	bool SelectionIsInside(long x, long y);
	bool SelectionIsValid(){return pSelection!=0;}
	void SelectionGetBox(RECT& r){memcpy(&r,&info.rSelectionBox,sizeof(RECT));}
	bool SelectionToHRGN(HRGN& region);
#endif //CXIMAGE_SUPPORT_SELECTION

#if CXIMAGE_SUPPORT_ALPHA
	//Alpha
	void AlphaClear();
	void AlphaCreate();
	void AlphaDelete();
	void AlphaInvert();
	bool AlphaMirror();
	bool AlphaFlip();
	bool AlphaCopy(CxImage &from);
	bool AlphaSplit(CxImage *dest);
	void AlphaStrip();
	void AlphaSet(BYTE level);
	bool AlphaSet(CxImage &from);
	void AlphaSet(long x,long y,BYTE level);
	BYTE AlphaGet(long x,long y);
	BYTE AlphaGetMax() const {return info.nAlphaMax;}
	void AlphaSetMax(BYTE nAlphaMax) {info.nAlphaMax=nAlphaMax;}
	bool AlphaIsValid(){return pAlpha!=0;}

	void AlphaPaletteClear();
	void AlphaPaletteEnable(bool enable=true){info.bAlphaPaletteEnabled=enable;}
	bool AlphaPaletteIsEnabled(){return info.bAlphaPaletteEnabled;}
	bool AlphaPaletteIsValid();
	bool AlphaPaletteSplit(CxImage *dest);
#endif //CXIMAGE_SUPPORT_ALPHA

#if CXIMAGE_SUPPORT_LAYERS
	bool LayerCreate(long position = -1);
	bool LayerDelete(long position = -1);
	void LayerDeleteAll();
	CxImage* GetLayer(long position);
	CxImage* GetParent() const {return info.pParent;}
	long GetNumLayers() const {return info.nNumLayers;}
#endif //CXIMAGE_SUPPORT_LAYERS

protected:
	void Startup(DWORD imagetype = 0);
	void CopyInfo(const CxImage &src);
	void Ghost(CxImage *src);
	void RGBtoBGR(BYTE *buffer, int length);
	float HueToRGB(float n1,float n2, float hue);
	void Bitfield2RGB(BYTE *src, WORD redmask, WORD greenmask, WORD bluemask, BYTE bpp);
	static int CompareColors(const void *elem1, const void *elem2);

	void*				pDib; //contains the header, the palette, the pixels
    BITMAPINFOHEADER    head; //standard header
	CXIMAGEINFO			info; //extended information
	BYTE*				pSelection;	//selected region
	BYTE*				pAlpha; //alpha channel
	CxImage**			pLayers; //generic layers
};
////////////////////////////////////////////////////////////////////////////
#endif // !defined(__CXIMAGE_H)