www.pudn.com > zhifangtu.rar > ImageObject.h

// ImageObject.h 
 
#ifndef __IMAGEOBJECT_H__ 
#define __IMAGEOBJECT_H__ 
 
#include "Errors.h" 
#include "ImageLoad.h" 
 
#define POPULARITY_PALETTE 0 
#define MEDIAN_CUT_PALETTE 1 
#define FIXED_PALETTE 2 
 
#define GETRGB555( 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 GETRGB565( 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 GETRGB888( 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 PUTRGB555( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 7 ) | ( ( (WORD) b & 0x00f8 ) << 2 ) | ( (WORD) c >> 3 ) ); } 
#define PUTRGB565( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 8 ) | ( ( (WORD) b & 0x00fc ) << 3 ) | ( (WORD) c >> 3 ) ); } 
#define PUTRGB888( 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) 
 
class CImageObject : public CObject 
{ 
	DECLARE_DYNCREATE(CImageObject) 
public: 
	//构造函数和析构函数 
	CImageObject(); 
	CImageObject(CImageObject* pImageObject); 
	CImageObject( const char *, CDC *pDC = NULL, int nX = -1, int nY = -1 ); 
	~CImageObject(); 
 
	// 重载操作符函数 
	void operator= (const CImageObject &ImageObject); 
	 
	//读入 
	BOOL Load( const char *, CDC *pDC = NULL, int nX = -1, int nY = -1 ); 
	 
	//得到错误码 
	int GetLastError( void ); 
	//保存 
	BOOL Save( const char *, int nType = -1 ); 
	//得到文件大小 
	long GetFileSize( void ); 
	//得到宽度 
	int GetWidth( void ); 
	//得到高度 
	int GetHeight( void ); 
	//得到位数 
	int GetNumBits( void ); 
	//得到颜色数 
	int GetNumColors( void ); 
	//得到调色板 
	BOOL GetPaletteData( RGBQUAD * ); 
	RGBQUAD *GetPaletteData( void ); 
	//得到文件类型 
	int GetImageType( const char * ); 
	int GetImageType( void ); 
	//得到图像信息 
	BOOL GetImageInfo( const char *, int *pnWidth = NULL, 
		int *pnHeight = NULL, int *pnPlanes = NULL, 
		int *pnBitsPerPixel = NULL, int *pnNumColors = NULL ); 
	//绘制图像 
	BOOL Draw( CDC *, int x = -1, int y = -1 ); 
	//设置调色板 
	BOOL SetPalette( CDC * ); 
	//设置生成调色板类型 
	void SetPaletteCreationType( int ); 
	//得到生成调色板类型 
	int GetPaletteCreationType( void ); 
 
	//是否载入 
	BOOL IsLoaded( void ); 
	//扩展索引 
	int ExtensionIndex( const char * ); 
 
	//改变格式 
	BOOL ChangeFormat( int ); 
 
	//得到调色板字节数 
	int GetPaletteBytes( void ); 
	//得到位图 
	HGLOBAL GetDib( void ); 
	//得到调色板 
	CPalette *GetPalette( void ); 
 
	//坐标调整 
	void NormalizeCoordinates( int *, int *, int *, int *, BOOL *bCompleteImage = NULL, BOOL *bLessThanHalf = NULL ); 
	//得到指针 
	void *GetDIBPointer( int *nWidthBytes = NULL, int nNewBits = 0, int *nNewWidthBytes = NULL, int nNewWidth = -1 ); 
	//得到逻辑调色板 
	LOGPALETTE *GetLogPal( void ); 
	//创建逻辑调色板 
	LOGPALETTE *CreateLogPalette( RGBQUAD *Palette, int NumColors ); 
	//得到最近索引 
	int GetNearestIndex( unsigned char, unsigned char, unsigned char, RGBQUAD *, int ); 
 
	//设置质量 
	void SetQuality( int nQual ){ m_nQuality = nQual; } 
	//设置宽度 
	void SetWidth( int nWidth ){ m_nWidth = nWidth; } 
	//设置高度 
	void SetHeight( int nHeight ){ m_nHeight = nHeight; } 
	//设置平面数 
	void SetPlanes( int nPlanes ){ m_nPlanes = nPlanes; } 
	//设置平面数 
	void SetScreenPlanes( int nScreenPlanes ){ m_nScreenPlanes = nScreenPlanes; } 
	//设置颜色位数 
	void SetBits( int nBits ){ m_nBits = nBits; } 
	//设置颜色位数 
	void SetScreenBits( int nScreenBits ){ m_nScreenBits = nScreenBits; } 
	//设置颜色数 
	void SetColors( int nColors ){ m_nColors = nColors; } 
	//设置图像类型 
	void SetImageType( int nImageType ){ m_nImageType = nImageType; } 
	//设置最后错误类型 
	void SetLastError( int nLastError ){ m_nLastError = nLastError; } 
	//设置最后错误类型 
	void SetPaletteBytes( int nPaletteBytes ){ m_nPaletteBytes = nPaletteBytes; } 
	//设置m_nX 
	void SetX( int nX ){ m_nX = nX; } 
	//设置m_nY 
	void SetY( int nY ){ m_nY = nY; } 
	//获取m_nPlans值 
	int GetPlanes( ){ return m_nPlanes; } 
	//获取m_nScreenPlans值 
	int GetScreenPlanes( ){ return m_nScreenPlanes; } 
	//获取m_nScreenBits值 
	int GetScreenBits( ){ return m_nScreenBits; } 
	//获取m_nQuality值 
	int GetQuality( ){ return m_nQuality; } 
	//获取m_nColors值 
	int GetColors( ){ return m_nColors; } 
	//获取m_nX值 
	int GetX( ){ return m_nX; } 
	//获取m_nY值 
	int GetY( ){ return m_nY; } 
 
	static char *szExtensions[7];			//扩展名 
	int m_nLastError;						//最近错误 
	int m_nScreenPlanes, m_nScreenBits, m_nPaletteBytes;			 
	//处理调色板 
	void ProcessPalette( void ); 
	//字节宽度 
	int WidthBytes( int, int ); 
	//设置位图 
	void SetDib( HGLOBAL hDib ){ m_hDib = hDib; } 
	//设置逻辑调色板 
	void SetLogPal( LOGPALETTE *pLogPal ){ m_pLogPal = pLogPal; } 
	//清除图像 
	void KillImage( void ); 
	//处理图像头 
	void ProcessImageHeader( void ); 
 
//诊断调试函数 
#ifdef _DEBUG 
	virtual void Dump( CDumpContext &dc) const; 
	virtual void AssertValid() const; 
#endif 
 
protected: 
	//初始化参数 
	void InitVars( BOOL bFlag = FALSE ); 
	//从位图创建调色板 
	void CreatePaletteFromDIB( RGBQUAD *, int ); 
	LOGPALETTE *CreatePaletteFromBitmap( int, unsigned char *, int, int, int ); 
 
	//普及调色板 
	RGBQUAD *MakePopularityPalette( int, unsigned char *, int, int, int ); 
	//中值剪切调色板 
	RGBQUAD *MakeMedianCutPalette( int, unsigned char *, int, int, int ); 
	//固定调色板 
	RGBQUAD *MakeFixedPalette( int ); 
 
 
	int m_nWidth, m_nHeight, m_nPlanes, m_nBits, m_nColors, m_nImageType; 
	int m_nX, m_nY; 
	int m_nQuality; 
	int m_nPaletteCreationType; 
	CPalette m_Palette; 
	HGLOBAL m_hDib; 
public: 
	char * GetImageName(); 
	void ProcImgHead(void); 
	char *m_pszFilename; 
	LOGPALETTE *m_pLogPal; 
	long m_nFileSize,m_nBfOffBits; 
}; 
 
#endif