bdi.h

用FREE BASIC做的演示程序

//Blue Dream Engine V1.1
//BlueDreamImage FileHeader
//by Kylinx
#ifndef BLUE_DREAM_IMAGE_H_
#define BLUE_DREAM_IMAGE_H_
#include<windows.h>
#include<string>
using namespace std;
#include"GLayer.h"
#define D_BDIID		'BI'
#define RGBTo16Bit565(r,g,b)    (((r>>3)<<11)|((g>>2)<<5)|(b>>3))
#define GET16Bit565_R(w)		((((unsigned short)w)>>8)&0xff)
#define GET16Bit565_G(w)		((((unsigned short)w)>>3)&0xff)
#define GET16Bit565_B(w)		((((unsigned short)w)&0x1f)<<3)

#define BDI_NOCOLORKEY			0x0
#define BDI_SRCCOLORKEY			0x1
#define BDI_DESTCOLORKEY		0x2
#define BDI_ALPHA				0x3
#define BDI_SRCCKALPHA			0x4
#define BDI_DESTCKALPHA			0x5
#define BDI_ADDITIVE			0x6
#define BDI_SRCCKADDITIVE		0x7
#define BDI_DESTCKADDITIVE		0x8
#define BDI_SUB					0x9
#define BDI_SRCCKSUB			0x10
#define BDI_DESTCKSUB			0x11
#define BDI_GRAY				0x12
#define BDI_SRCCKGRAY			0x13
#define BDI_DESTCKGRAY			0x14

#define BDI_METHOD_TRANS		0x80000000
struct BDIFILEHEADER
{
	unsigned short	wID;
	unsigned char	byVersion;
	unsigned char	byCompress;
	unsigned short	wWidth;
	unsigned short	wHeight;
	unsigned long	dwCompressedImageDataSize;
	unsigned long	dwOrgDataSize;
};
class GFileLoader;
class GScreen;
class GBDI:public GLayerObject
{
public:
	static unsigned char BDI_AlphaBlendTable[16][256][256];			//16级Alpha混合表
	static unsigned char BDI_AdditiveTable[256][256];				//Additive表
	static unsigned char BDI_SubTable[256][256];	
	static unsigned char BDI_GrayTable[256];						//灰度表
	
	static void SaveBDITable(const string &strFile);
	static void LoadBDITable(GFileLoader*pFileLoader,const string &strFile);
	
	static void InitAlphaBlendTable();
	static void InitAdditiveTable();
	static void InitSubTable();
	static void InitGrayTable();

	GBDI();
	virtual ~GBDI();
	virtual void DrawToScreen(GScreen*pScreen);

	void SetColorKeyRGB(unsigned r,unsigned g,unsigned b);
	inline void SetColorKeyIndex(unsigned char index){m_byColorKeyIndex=index;}
	inline unsigned char GetColorKeyIndex()const{return m_byColorKeyIndex;}
	inline int GetWidth()const{return m_nWidth;}
	inline int GetHeight()const{return m_nHeight;}
	bool LoadBDI(GFileLoader*pFileLoader,const string & strFileName);
	void SetShowArea(const RECT*pRect=NULL);
	inline RECT GetShadowArea()const{return m_rtShowArea;}
	
	inline void SetPosition(int x,int y){m_position.x=x;m_position.y=y;}
	inline void SetPosition(const POINT & pt){m_position=pt;}
	inline POINT GetPosition()const{return m_position;}
	inline void SetDrawMethod(int nMethod,int nArg){m_nShowMethod=nMethod;m_nArg=nArg;}
	inline int GetDrawMethod()const{return m_nShowMethod;}
	inline int GetDrawParam()const{return m_nArg;}
	void Grayed();


private:
	void DrawToScreenNoColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenSrcColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenDestColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,unsigned char byDestColorKey);
	
	void DrawToScreenAlphaNoColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,int nAlpha);
	void DrawToScreenAlphaSrcColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,int nAlpha);
	void DrawToScreenAlphaDestColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,int nAlpha,unsigned char byDestColorKey);
	
	void DrawToScreenGrayNoColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenGraySrcColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenGrayDestColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,unsigned char byDestColorKey);
	
	void DrawToScreenAdditiveNoColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenAdditiveSrcColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenAdditiveDestColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,unsigned char byDestColorKey);
	
	void DrawToScreenSubNoColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenSubSrcColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow);
	void DrawToScreenSubDestColorKey(unsigned char*pBufDest,int nDestWidth,unsigned char*pBufSour,int nLine,int nRow,unsigned char byDestColorKey);
		
	POINT			m_position;
	int				m_nShowMethod;
	int				m_nArg;
	
	RECT			m_rtShowArea;
	BDIFILEHEADER	m_bdi;
	int				m_nWidth;
	int				m_nHeight;
	
	unsigned char	*m_pData;
	unsigned char	m_byColorKeyIndex;
	unsigned char	m_byDrawMethod;
	unsigned char	m_bEnableTrans;
	unsigned char	m_bRes;
};

#endif