ddutil.h

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//-----------------------------------------------------------------------------
// File: ddutil.cpp
//
// Desc: Routines for loading bitmap and palettes from resources
//
// Copyright (C) 1998-2001 Microsoft Corporation. All Rights Reserved.
//-----------------------------------------------------------------------------
#ifndef DDUTIL_H
#define DDUTIL_H

#include <ddraw.h>
#include <d3d.h>
#include <emmintrin.h>//MMX指令的头文件




//-----------------------------------------------------------------------------
// Classes defined in this header file 
//-----------------------------------------------------------------------------
class CDisplay;
class CSurface;




//-----------------------------------------------------------------------------
// Flags for the CDisplay and CSurface methods
//-----------------------------------------------------------------------------
#define DSURFACELOCK_READ
#define DSURFACELOCK_WRITE




//-----------------------------------------------------------------------------
// Name: class CDisplay
// Desc: Class to handle all DDraw aspects of a display, including creation of
//       front and back buffers, creating offscreen surfaces and palettes,
//       and blitting surface and displaying bitmaps.
//-----------------------------------------------------------------------------
class CDisplay
{
protected:
    LPDIRECTDRAW7        m_pDD;                //directdraw对象，这个7是微软支持的最高版本
    LPDIRECTDRAWSURFACE7 m_pddsFrontBuffer;    //页面对象，作为表面，也就是在屏幕上显示的
    LPDIRECTDRAWSURFACE7 m_pddsBackBuffer;     //页面对象，作为内存buff，绘制操作的目标
    LPDIRECTDRAWSURFACE7 m_pddsBackBufferLeft; // 
	DDSURFACEDESC2 ddsd;   //用作窗口模式下的
    HWND                 m_hWnd;
    RECT                 m_rcWindow;
    BOOL                 m_bWindowed;
    BOOL                 m_bStereo;

public:
    CDisplay();
    ~CDisplay();

    //get函数
    HWND                 GetHWnd()           { return m_hWnd; } //
    LPDIRECTDRAW7        GetDirectDraw()     { return m_pDD; }  
    LPDIRECTDRAWSURFACE7 GetFrontBuffer()    { return m_pddsFrontBuffer; }
    LPDIRECTDRAWSURFACE7 GetBackBuffer()     { return m_pddsBackBuffer; }
    LPDIRECTDRAWSURFACE7 GetBackBufferLeft() { return m_pddsBackBufferLeft; }

    //状态函数
    BOOL    IsWindowed()                     { return m_bWindowed; }
    BOOL    IsStereo()                       { return m_bStereo; }

    //创建和释放对象的函数
    HRESULT CreateFullScreenDisplay( HWND hWnd, DWORD dwWidth, DWORD dwHeight,
		                             DWORD dwBPP );
    HRESULT CreateWindowedDisplay( HWND hWnd, DWORD dwWidth, DWORD dwHeight );
    HRESULT InitClipper();
    HRESULT UpdateBounds();
    virtual HRESULT DestroyObjects();
	__m64 Get_m64(__int64 n);
	__int64 Get_int64(DWORD dwNum);
    // Methods to create child objects
    HRESULT CreateSurface( CSurface** ppSurface, DWORD dwWidth,
		                   DWORD dwHeight, DWORD nFlags = DDSCAPS_OFFSCREENPLAIN);
    HRESULT CreateSurfaceFromBitmap( CSurface** ppSurface, TCHAR* strBMP,
		                             DWORD dwDesiredWidth,
									 DWORD dwDesiredHeight,
									 DWORD nFlags = DDSCAPS_OFFSCREENPLAIN);
	HRESULT CreateSurfaceFromBitmap( CSurface** ppSurface, TCHAR* strBMP,DWORD nFlags = DDSCAPS_OFFSCREENPLAIN);
    HRESULT CreateSurfaceFromText( CSurface** ppSurface, HFONT hFont,
		                           TCHAR* strText, 
								   COLORREF crBackground,
								   COLORREF crForeground,
								   DWORD    nFlags = DDSCAPS_OFFSCREENPLAIN);
    HRESULT CreatePaletteFromBitmap( LPDIRECTDRAWPALETTE* ppPalette, const TCHAR* strBMP );
	HRESULT ChangeBackBufferSize(int width,int height);   //add by ajohn 修改后台缓冲区的大小~
    // Display methods
    HRESULT Clear( DWORD dwColor = 0L );
    HRESULT ColorKeyBlt( DWORD x, DWORD y, LPDIRECTDRAWSURFACE7 pdds,
                         RECT* prc = NULL );
    HRESULT Blt( DWORD x, DWORD y, LPDIRECTDRAWSURFACE7 pdds,
		         RECT* prc=NULL, DWORD dwFlags=0 );
    HRESULT Blt( DWORD x, DWORD y, CSurface* pSurface, RECT* prc = NULL );
	//add by ajohn 自动选取rt进行帖图
	HRESULT Blt( int x,int y,CSurface* pSurface);
	//add by ajohn 内存到显存的blt
	HRESULT Qmemcpy(DWORD x,DWORD y,CSurface* pSurface,RECT* prc, int nQWORDs);
	//add by ajohn 加亮，减暗的Blt
	HRESULT ShadleBlt(DWORD x,DWORD y,CSurface* pSurface,RECT* prc,int shadle);
	//add by ajohn 带alpha的混合blt
	HRESULT AlphaBlt(int x,int y,CSurface* pSurface,BYTE alpha,DWORD KeyColor);
	//add by ajohn 带alpha的混合blt
	HRESULT AlphaBlt(DWORD x,DWORD y,CSurface* pSurface,RECT* prc,BYTE alpha,DWORD KeyColor);
    HRESULT ShowBitmap( HBITMAP hbm, LPDIRECTDRAWPALETTE pPalette=NULL );
    HRESULT SetPalette( LPDIRECTDRAWPALETTE pPalette );
    HRESULT Present();
};




//-----------------------------------------------------------------------------
// Name: class CSurface
// Desc: Class to handle aspects of a DirectDrawSurface.
//-----------------------------------------------------------------------------
class CSurface
{
    LPDIRECTDRAWSURFACE7 m_pdds;
    DDSURFACEDESC2       m_ddsd;
    BOOL                 m_bColorKeyed;

public:
    LPDIRECTDRAWSURFACE7 GetDDrawSurface() { return m_pdds; }
	DDSURFACEDESC2       GetDDrawDesc()    { return m_ddsd;}
    BOOL                 IsColorKeyed()    { return m_bColorKeyed; }
	//add by ajohn
//	HRESULT			     DDLoadBitmap(LPDIRECTDRAW7 pdd, LPCSTR szBitmap, int dx, int dy);
//	HRESULT              DDCopyBitmap(LPDIRECTDRAWSURFACE7 pdds, HBITMAP hbm, int x, int y, int dx, int dy);

    HRESULT DrawBitmap(HBITMAP hBMP, DWORD dwBMPOriginX = 0, DWORD dwBMPOriginY = 0, 
		                DWORD dwBMPWidth = 0, DWORD dwBMPHeight = 0 );
    HRESULT DrawBitmap( TCHAR* strBMP, DWORD dwDesiredWidth, DWORD dwDesiredHeight );
    HRESULT DrawText( HFONT hFont, TCHAR* strText, DWORD dwOriginX, DWORD dwOriginY,
		              COLORREF crBackground, COLORREF crForeground );

    HRESULT SetColorKey( DWORD dwColorKey );
    DWORD   ConvertGDIColor( COLORREF dwGDIColor );
    static HRESULT GetBitMaskInfo( DWORD dwBitMask, DWORD* pdwShift, DWORD* pdwBits );

    HRESULT Create( LPDIRECTDRAW7 pDD, DDSURFACEDESC2* pddsd );
    HRESULT Create( LPDIRECTDRAWSURFACE7 pdds );
    HRESULT Destroy();

    CSurface();
    ~CSurface();
};




#endif // DDUTIL_H