www.pudn.com > MyImageDB(imageobject).rar > ImageObject.h
// ImageObject.h: interface for the CImageObject class.
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_IMAGEOBJECT_H__5C19DEAE_E21C_4E61_B021_E3A699B4717B__INCLUDED_)
#define AFX_IMAGEOBJECT_H__5C19DEAE_E21C_4E61_B021_E3A699B4717B__INCLUDED_
#include "ImageErrors.h"
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define JGPT_POPULARITY_PALETTE 0
#define JGPT_MEDIAN_CUT_PALETTE 1
#define JGPT_FIXED_PALETTE 2
#define GET_RGB_16( a, b, c, d ) { WORD *wData = (WORD *) d; a = (unsigned char) ( ( (*wData) & 0x7c00 ) >> 7 ); b = (unsigned char) ( ( (*wData) & 0x03e0 ) >> 2 ); c = (unsigned char) ( ( (*wData) & 0x001f ) << 3 ); }
//#define GET_RGB_565( a, b, c, d ) { WORD *wData = (WORD *) d; a = (unsigned char) ( ( (*wData) & 0xf800 ) >> 8 ); b = (unsigned char) ( ( (*wData) & 0x07e0 ) >> 3 ); c = (unsigned char) ( ( (*wData) & 0x001f ) << 3 ); }
#define GET_RGB_32( a, b, c, d ) { DWORD *dwData = (DWORD *) d; a = (unsigned char) ( (*dwData) >> 16 ); b = (unsigned char) ( ( (*dwData) & 0x0000ff00 ) >> 8 ); c = (unsigned char) ( (*dwData) & 0x000000ff ); }
#define PUT_RGB_16( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 7 ) | ( ( (WORD) b & 0x00f8 ) << 2 ) | ( (WORD) c >> 3 ) ); }
//#define PUT_RGB_565( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 8 ) | ( ( (WORD) b & 0x00fc ) << 3 ) | ( (WORD) c >> 3 ) ); }
#define PUT_RGB_32( a, b, c, d ) { DWORD *dwData = (DWORD *) d; *dwData = ( (DWORD) a << 16 ) | ( (DWORD) b << 8 ) | (DWORD) c; }
#define _RGB( r, g, b ) ( WORD )( ( ( b ) & ~7 ) << 7 ) | ( ( ( g ) & ~7 ) << 2 ) | ( ( r ) >> 3 )
struct ImageINFO
{
int nWidth;
int nHeight;
int nPlanes;
int nColorDepth;
int nColorNumber;
};
class CImageObject : public CObject
{
DECLARE_DYNCREATE( CImageObject )
public:
// Constructors and destructor
CImageObject();
CImageObject( const char *pszFileName, CDC *pDC = NULL, int nX = -1, int nY = -1 );
~CImageObject();
void operator=( const CImageObject &ImageObject );
// Error handler
int GetLastError( void );
// Load and save member functions
// bool GetImageInfo( const char *pszFileName, int *pnWidth = NULL, int *pnHeight = NULL, int *pnPlanes = NULL, int *pnBitsPerPixel = NULL, int *pnNumColors = NULL );
bool GetImageInfo( ImageINFO *gi );
ImageINFO *GetImageInfo( void );
bool LoadFromFile( const char *pszFileName, CDC *pDC = NULL, int nX = -1, int nY = -1 );
bool SaveToFile( const char *pszFileName, int nType = -1 );
bool IsLoaded( void );
//-----------------------------------------------------------------------------------------
// The following 10 functions were designed by maple
// LoadDIB to buf and Update the DIB
bool LoadDIBToBuf(BYTE * buf);
bool UpdateDIB(int nNewWidth,int nNewHeight,BYTE * buf);
// Get | Set pixel color
RGBQUAD GetPixelColor(int x,int y);
void SetPixelColor(int x,int y,RGBQUAD color);
// create a new image by color bits,create a 24 bits image
bool CreateDIBFromBits(int nWidth,int nHeight,BYTE * buf);
// Convert a standard hDIB to the DIB used in this class
bool CreateFromHANDLE(HANDLE handle);
// 用于专门处理256色灰度图象 date:2004.3.29
bool LoadDIBToBuf2(BYTE * buf);
bool UpdateDIB2(int nNewWidth,int nNewHeight,BYTE * buf);
BYTE GetPixelColor2(int x,int y);
void SetPixelColor2(int x,int y,BYTE color);
//-----------------------------------------------------------------------------------------
// Draw member function
virtual bool Draw( CDC *pDC, int nX = -1, int nY = -1 );
virtual bool DrawTo(CDC *pDC,int nDestX = -1,int nDestY = -1,int nDestWidth=0,int nDestHeight=0);
bool DrawToHdc(HDC pHdc, int nDestX ,int nDestY ,int nDestWidth,int nDestHeight);
// Palette member functions
bool GetPaletteData( RGBQUAD *pRGBPalette );
RGBQUAD *GetPaletteData( void );
bool SetPalette( CDC *pDC );
void SetPaletteCreationType( int nType );
int GetPaletteCreationType( void );
// Get/set member functions
char *GetImageName();
// int GetImageType( const char *pszFileName );
int GetImageType( void );
int GetWidth( void );
int GetHeight( void );
int GetBits( void );
int GetColors( void );
BYTE * GetDibPoint(void);
long GetSize();
int GetDestX();
int GetDestY();
HGLOBAL GetDib( void );
void SetDib( HGLOBAL hDib );
void SetQuality( int nQuality );
bool SetColorDepth( int nColorDepth );
// Diagnostics and dump member functions, overrided
#ifdef _DEBUG
virtual void Dump( CDumpContext& dc ) const;
virtual void AssertValid() const;
#endif
//protected:
private:
// LoadFromFile invokes these two functions, and SetResolution only the former.
void LoadImageHeader( void );
void LoadPalette( void );
void DestroyImage( void );
LOGPALETTE *GetLogPalette( void );
void SetLogPalette( LOGPALETTE *pLogPalette );
LOGPALETTE *CreateLogPalette( RGBQUAD *pPalette, int nNumColors );
CPalette *GetPalette( void );
int GetPaletteInBytes( void );
void *GetDIBPointer( int *nWidthBytes = NULL, int nNewBits = 0, int *nNewWidthBytes = NULL, int nNewWidth = -1 );
void CreatePaletteFromDIB( RGBQUAD *pRGBPalette, int nColors );
LOGPALETTE *CreatePaletteFromBitmap( int nColors, unsigned char *pBits, int nBits, int nWidth, int nHeight );
RGBQUAD *GeneratePopularityPalette( int nColors, unsigned char *pBits, int nBits, int nWidth, int nHeight );
RGBQUAD *GenerateMedianCutPalette( int nColors, unsigned char *pBits, int nBits, int nWidth, int nHeight );
RGBQUAD *GenerateFixedPalette( int nColors );
private:
int GetWidthInBytes( int nBits, int nWidth );
int GetExtensionIndex( const char *pszFileName );
int GetNearestIndex( unsigned char ucRed, unsigned char ucGreen, unsigned char ucBlue, RGBQUAD *pRGBPalette, int nNumColors );
// the following 4 functions was designed to get/set pixel color
RGBQUAD GetPaletteColor(BYTE idx);
BYTE GetPixelIndex(int x,int y);
void SetPixelIndex(int x,int y,BYTE index);
BYTE GetNearestIndex(RGBQUAD color);
BOOL SaveBMP(const char *, HGLOBAL );
public:
static char *pszExtensions[7]; // Image file filter
private:
int m_nScreenPlanes;
int m_nScreenBits;
int m_nPaletteInBytes;
int m_nLastError; // Store the last error number
protected:
char *m_pszFileName; // Image file name
int m_nImageType; // Image type
HGLOBAL m_hDib; // DIB handler of the Image
BYTE * m_pDib; // buf for DIB
CPalette m_Palette; // Palette used by the Image
LOGPALETTE *m_pLogPalette; // Logical Palette used by the Image
int m_nPaletteCreationType; // Palette creation type: 0 for JGPT_POPULARITY_PALETTE, 1 for JGPT_MEDIAN_CUT_PALETTE, 2 for JGPT_FIXED_PALETTE
int m_nWidth, m_nHeight, m_nPlanes, m_nBits, m_nColors; // Information of the Image
int m_nX, m_nY; // Position when drawing the Image
int m_nDestWidth,m_nDestHeight; // The destination image size of the image
int m_nQuality; // Only for JPG Images
long m_lBufSize;
};
#endif // !defined(AFX_IMAGEOBJECT_H__5C19DEAE_E21C_4E61_B021_E3A699B4717B__INCLUDED_)