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WIN32程序的IMAGE类!

已有 541 次阅读2011-9-14 13:04

//头文件Image.h

#pragma once

#include <windows.h>

#include <wingdi.h>

class Image //图片类

{

protected:

HDC m_hDC;

HDC m_hMaskDC;

HDC m_hTempDC;

HBITMAP m_hBitmap;

HBITMAP m_hBitmapMask;

HBITMAP m_hBitmapTemp;

int m_nWidth;

int m_nHeight;

public:

Image(void);

~Image(void);

bool LoadImage( char* szFileName );

void DrawImage( HDC& hDC, int nX, int nY );

void DrawImage( HDC& hDC, int nX, int nY , COLORREF color);

void DrawImage( HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH ); //扣背景色

void DrawImage( HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH ,COLORREF color); //扣背景色

void DrawImageTran( HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH ,COLORREF color);//去背景色并且翻转

void Translucence( HDC &hBufferDC, int nViewX, int nViewY, int nPlayX, int nPlayY, double fAlpha );

void LoadTemp(HDC& hDC);

void DrawImageTemp( HDC& hDC,HDC& m_hDC, int nX, int nY );

int GetWidth() { return m_nWidth; }

int GetHeight() { return m_nHeight; }

};

//源文件 Image.cpp

#include "Image.h"

Image::Image(void)

{

m_hDC = NULL;

m_hMaskDC = NULL;

m_hTempDC = NULL;

m_hBitmap = NULL;

m_hBitmapMask = NULL;

m_hBitmapTemp = NULL;

m_nWidth = 0;

m_nHeight = 0;

}

Image::~Image(void)

{

if( m_hBitmap )

{

m_hBitmap = (HBITMAP)SelectObject( m_hDC, m_hBitmap );

DeleteObject( m_hBitmap );

m_hBitmap = NULL;

}

if( m_hDC ) DeleteDC( m_hDC );

if( m_hBitmapMask )

{

m_hBitmapMask = (HBITMAP)SelectObject( m_hMaskDC, m_hBitmapMask );

DeleteObject( m_hBitmapMask );

m_hBitmapMask = NULL;

}

if( m_hMaskDC ) DeleteDC( m_hMaskDC );

if( m_hBitmapTemp )

{

m_hBitmapTemp = (HBITMAP)SelectObject( m_hTempDC, m_hBitmapTemp );

DeleteObject( m_hBitmapTemp );

m_hBitmapTemp = NULL;

}

if( m_hTempDC ) DeleteDC( m_hTempDC );

}

bool Image::LoadImage( char* szFileName )

{

if( m_hBitmap )

{

m_hBitmap = (HBITMAP)SelectObject( m_hDC, m_hBitmap );

DeleteObject( m_hBitmap );

m_hBitmap = NULL;

}

if( m_hDC ) DeleteDC( m_hDC );

m_hBitmap = (HBITMAP)::LoadImage( NULL, szFileName, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE );

if( !m_hBitmap ) return false;

BITMAP bmp;

GetObject( m_hBitmap, sizeof(BITMAP), &bmp );

m_nWidth = bmp.bmWidth; //图片宽

m_nHeight = bmp.bmHeight; //图片高

m_hDC = CreateCompatibleDC( NULL );

m_hTempDC=CreateCompatibleDC( NULL );

m_hBitmap = (HBITMAP)SelectObject( m_hDC, m_hBitmap );

m_hBitmapTemp=CreateCompatibleBitmap(m_hDC,m_nWidth,m_nHeight);

SelectObject(m_hTempDC,m_hBitmapTemp);

return true;

}

void Image::DrawImage( HDC& hDC, int nX, int nY )

{

BitBlt( hDC, nX, nY, m_nWidth, m_nHeight, m_hDC, 0, 0, SRCCOPY );

}

void Image::DrawImage( HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH )

{

BitBlt( hDC, nX, nY, nRectW, nRectH, m_hDC, nRectX, nRectY, SRCCOPY );

}

//半透明处理--------------------------------------------------------------------------------------------------------------

void Image::Translucence( HDC &hBufferDC, int nViewX, int nViewY, int nPlayX, int nPlayY, double fAlpha )

{

struct ColorRGB

{

int byRed;

int byGreen;

int byBlue;

};

COLORREF nC1; //源点颜色

COLORREF nC2; //目标点颜色

HDC hDC; //半透明缓冲区DC

HBITMAP m_hBitmap;

hDC = CreateCompatibleDC( m_hDC );

m_hBitmap = (HBITMAP)SelectObject( hDC, CreateCompatibleBitmap( m_hDC, m_nWidth, m_nHeight ) );

ColorRGB sRGB[3];

for ( int ni = 0; ni < m_nHeight; ni++ )

for ( int nj = 0; nj < m_nWidth; nj++ )

{

//背景图

nC1 = GetPixel( hBufferDC, nPlayX - nViewX + nj, nPlayY - nViewY + ni );

sRGB[0].byRed = GetRValue( nC1 );

sRGB[0].byGreen = GetGValue( nC1 );

sRGB[0].byBlue = GetBValue( nC1 );

//目标图

nC2 = GetPixel( m_hDC, nj, ni );

sRGB[1].byRed = GetRValue( nC2 );

sRGB[1].byGreen = GetGValue( nC2 );

sRGB[1].byBlue = GetBValue( nC2 );

if ( sRGB[1].byRed == 255 && sRGB[1].byGreen == 0 && sRGB[1].byBlue == 255 )

{

SetPixel( hDC, nj, ni, nC1 );

}

else

{

//半透明处理

sRGB[2].byRed = (int)( sRGB[0].byRed * fAlpha + sRGB[1].byRed * ( 1.0001 - fAlpha ) );

sRGB[2].byGreen = (int)( sRGB[0].byGreen * fAlpha + sRGB[1].byGreen * ( 1.0001 - fAlpha ) );

sRGB[2].byBlue = (int)( sRGB[0].byBlue * fAlpha + sRGB[1].byBlue * ( 1.0001 - fAlpha ) );

SetPixel( hDC, nj, ni, RGB( sRGB[2].byRed, sRGB[2].byGreen, sRGB[2].byBlue ) );

}

BitBlt( hBufferDC, nPlayX - nViewX, nPlayY - nViewY, m_nWidth, m_nHeight, hDC, 0, 0, SRCCOPY );

}

void Image::DrawImage(HDC& hDC, int nX, int nY , COLORREF color)

{

TransparentBlt(hDC,nX,nY,m_nWidth,m_nHeight,m_hDC,0,0,m_nWidth,m_nHeight,color);

}

void Image::DrawImage( HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH ,COLORREF color )

{

TransparentBlt(hDC,nX,nY,nRectW,nRectH,m_hDC,nRectX,nRectY,nRectW,nRectH,color);

}

void Image::DrawImageTran(HDC& hDC, int nX, int nY, int nRectX, int nRectY, int nRectW, int nRectH ,COLORREF color)

{

StretchBlt(m_hTempDC, 0, 0, nRectW, nRectH, m_hDC, nRectX+nRectW, nRectY, nRectW*(-1), nRectH, SRCCOPY);

TransparentBlt(hDC,nX,nY,nRectW,nRectH,m_hTempDC,0,0,nRectW,nRectH,color);

}

void Image::DrawImageTemp( HDC& hDC,HDC& m_hDC, int nX, int nY )

{

BitBlt( hDC, nX, nY, 1000, 1000, m_hDC, 0, 0, SRCCOPY );

}

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WIN32程序的IMAGE类!

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