CSBitmap类，可用于储存DIB位图，也可用于储存二维数列，解决二维数列传递不方便的问题，效率比GDI的bitmap高

#include "stdafx.h" #include "SBitmap.h" IMPLEMENT_SERIAL(CSBitmap,CObject,1) CSBitmap::CSBitmap(void) : Width(0) , Height(0) , BitSize(0) , pBitData(NULL) , BitCount(0) { } CSBitmap::~CSBitmap(void) { delete []pBitData; } bool CSBitmap::SetAttribute(unsigned mWidth, unsigned int mHeight, unsigned int mBitCount) { if(!mWidth) mWidth=Width; if(!mHeight) mHeight=Height; if(!mBitCount) mBitCount=BitCount; delete pBitData; switch(mBitCount) { case 1: while(mWidth%8) mWidth++; this->BitSize=mWidth*mHeight/8; pBitData=new BYTE[BitSize]; break; case 4: while(mWidth%2) mWidth++; this->BitSize=mWidth*mHeight/2; pBitData=new BYTE[BitSize]; break; case 8: this->BitSize=mWidth*mHeight; pBitData=new BYTE[BitSize]; break; case 12: this->BitSize=mWidth*mHeight/2*3; pBitData=new BYTE[BitSize]; break; case 16: this->BitSize=mWidth*mHeight*2; pBitData=new BYTE[BitSize]; break; case 24: while(mWidth%4) mWidth++; this->BitSize=mWidth*mHeight*3; pBitData=new BYTE[BitSize]; break; case 32: while(mWidth%4) mWidth++; this->BitSize=mWidth*mHeight*4; pBitData=new BYTE[BitSize]; break; default: return false; } this->Width=mWidth; this->Height=mHeight; this->BitCount=mBitCount; ZeroMemory(this->pBitData,this->BitSize); return true; } bool CSBitmap::ImportBits(BYTE* lpBits, int mBitSize) { if(!lpBits) return false; if(!mBitSize) mBitSize=BitSize; memcpy(pBitData,lpBits,mBitSize); return true; } COLORREF CSBitmap::GetPixel(unsigned int x, unsigned int y) { if(!(Width&&Height&&BitCount&&pBitData)) return 0; COLORREF clr; unsigned long shift=0; BYTE base=1; switch(BitCount) { case 1: shift=((Height-y-1)*Width+x)/8; for(int i=0;i<7-x%8;i++) base*=2; clr=(*(pBitData+shift))%(2*base)/base; break; case 4: shift=((Height-y-1)*Width+x)/2; if(x%2) clr=(*(pBitData+shift))/0x10; else clr=(*(pBitData+shift))%0x10; break; case 8: shift=(Height-y-1)*Width+x; clr=*(pBitData+shift); break; case 12: shift=((Height-y-1)*Width+x)/2*3; if(x%2) clr=(*(pBitData+shift+1))%0x10*0x100+(*(pBitData+shift+2)); else clr=(*(pBitData+shift))*0x10+(*(pBitData+shift+1))/0x10; break; case 16: shift=((Height-y-1)*Width+x)*2; clr=(*(pBitData+shift))%0x100000+(*(pBitData+shift+1)); break; case 24: shift=((Height-y-1)*Width+x)*3; clr=(*(pBitData+shift))*0x10000+(*(pBitData+shift+1))*0x100+(*(pBitData+shift+2)); break; case 32: shift=((Height-y-1)*Width+x)*4; clr=*((COLORREF*)(pBitData+shift)); break; } return clr; } bool CSBitmap::SetPixel(unsigned int x, unsigned int y, COLORREF clr) { if(!(Width&&Height&&BitCount&&pBitData)) return true; BYTE oldColor=0; long shift=0; int base=1; switch(BitCount) { case 1: shift=((Height-y-1)*Width+x)/8; for(int i=0;i<7-x%8;i++) base*=2; oldColor=(*(pBitData+shift))%(2*base)/base; (*(pBitData+shift))+=(clr-oldColor)*base; return true; case 4: shift=((Height-y-1)*Width+x)/2; if(x%2) { oldColor=(*(pBitData+shift))/0x10; (*(pBitData+shift))+=(clr-oldColor)*0x10; } else { clr=(*(pBitData+shift))%0x10; (*(pBitData+shift))+=(clr-oldColor); } return true; case 8: shift=(Height-y-1)*Width+x; *(pBitData+shift)=clr; return true; case 12: shift=((Height-y-1)*Width+x)/2*3; if(x%2) { oldColor=(*(pBitData+shift+1))%0x10; (*(pBitData+shift+1))+=(clr/0x100-oldColor); (*(pBitData+shift+2))=clr%0x100; } else { (*(pBitData+shift))=(BYTE)(clr/0x10); oldColor=(*(pBitData+shift+1))/0x10; (*(pBitData+shift+1))+=(clr%0x10-oldColor)*0x10; } return true; case 16: shift=((Height-y-1)*(Width)+x)*2; (*(pBitData+shift))=clr/0x10000; (*(pBitData+shift+1))=clr%0x10000; return true; case 24: shift=((Height-y-1)*(Width)+x)*3; (*(pBitData+shift))=clr/0x10000; (*(pBitData+shift+1))=clr%0x10000/0x100; (*(pBitData+shift+2))=clr%0x100; return true; case 32: shift=((Height-y-1)*Width+x)*4; (*(pBitData+shift))=clr; return true; } return false; } inline COLORREF GetGradeColor(int x , float span , COLORREF clrStr, COLORREF clrEnd, unsigned int BitCount) { COLORREF clr=0; int StrR=0,StrG=0,StrB=0,EndR=0,EndG=0,EndB=0,AimR=0,AimG=0,AimB=0; switch(BitCount) { case 1: StrR=clrStr;EndR=clrEnd; break; case 12: StrR=CSBitmap::GetRValue12(clrStr); StrG=CSBitmap::GetGValue12(clrStr); StrB=CSBitmap::GetBValue12(clrStr); EndR=CSBitmap::GetRValue12(clrEnd); EndG=CSBitmap::GetGValue12(clrEnd); EndB=CSBitmap::GetBValue12(clrEnd); break; case 24: StrR=GetRValue(clrStr); StrG=GetGValue(clrStr); StrB=GetBValue(clrStr); EndR=GetRValue(clrEnd); EndG=GetGValue(clrEnd); EndB=GetBValue(clrEnd); break; case 32: StrR=GetRValue(clrStr); StrG=GetGValue(clrStr); StrB=GetBValue(clrStr); EndR=GetRValue(clrEnd); EndG=GetGValue(clrEnd); EndB=GetBValue(clrEnd); break; } AimR=(float)((span-x)*StrR+x*EndR)/span; AimG=(float)((span-x)*StrG+x*EndG)/span; AimB=(float)((span-x)*StrB+x*EndB)/span; switch(BitCount) { case 1: break; return AimR; case 12: return CSBitmap::RGB12(AimR,AimG,AimB); break; case 24: return RGB(AimR,AimG,AimB); break; case 32: return RGB(AimR,AimG,AimB); break; } return 0; } bool CSBitmap::StretchDIB(CSBitmap* DestBmp, unsigned int mWidth, unsigned int mHeight, unsigned int mFlag) { if(!(Width&&Height&&BitCount&&pBitData&&DestBmp)) return false; DestBmp->SetAttribute(mWidth,mHeight,this->BitCount); float xRate=(float)(DestBmp->Width)/(this->Width); float yRate=(float)(DestBmp->Height)/(this->Height); COLORREF clr1,clr2,clr3; switch(mFlag) { case 0: for(int y=0;y<DestBmp->Height;y++) { for(int x=0;x<DestBmp->Width;x++) { DestBmp->SetPixel(x,y,this->GetPixel((int)(x/xRate),(int)(y/yRate))); } } break; case 1: for(int y=0;y<this->Height-1;y++) { for(int x=0;x<this->Width-1;x++) { float subyInit=(float)y*yRate; float subxInit=(float)x*xRate; for(int suby=subyInit;suby<subyInit+yRate;suby++) { clr1=GetGradeColor((int)(suby-subyInit),yRate,this->GetPixel(x,y),this->GetPixel(x,y+1),this->BitCount); clr2=GetGradeColor((int)(suby-subyInit),yRate,this->GetPixel(x+1,y),this->GetPixel(x+1,y+1),this->BitCount); for(int subx=subxInit;subx<subxInit+xRate;subx++) { clr3=GetGradeColor((int)(subx-subxInit),xRate,clr1,clr2,this->BitCount); DestBmp->SetPixel(subx,suby,clr3); } } } } break; case 2: int sumR,sumG, sumB,newR,newG,newB; for(int y=0;y<DestBmp->Height;y++) { for(int x=0;x<DestBmp->Width;x++) { int subyInit=(float)y/yRate; int subyEnd=(float)(y+1)/yRate; int subxInit=(float)x/xRate; int subxEnd=(float)(x+1)/xRate; sumR=0;sumG=0;sumB=0; for(int suby=subyInit;suby<subyEnd;suby++) { for(int subx=subxInit;subx<subxEnd;subx++) { switch(this->BitCount) { case 1: clr1=this->GetPixel(subx,suby); sumR+=clr1; break; case 12: clr1=this->GetPixel(subx,suby); sumR+=CSBitmap::GetRValue12(clr1); sumG+=CSBitmap::GetGValue12(clr1); sumB+=CSBitmap::GetBValue12(clr1); break; case 24: clr1=this->GetPixel(subx,suby); sumR+=GetRValue(clr1); sumG+=GetGValue(clr1); sumB+=GetBValue(clr1); break; case 32: clr1=this->GetPixel(subx,suby); sumR+=GetRValue(clr1); sumG+=GetGValue(clr1); sumB+=GetBValue(clr1); break; } } } if((subyEnd-subyInit)&&(subxEnd-subxInit)) { newR=sumR/((subyEnd-subyInit)*(subxEnd