44 lines
1.6 KiB
Plaintext
44 lines
1.6 KiB
Plaintext
bool JPGImage::resample(PureDevice &pureDevice,int newWidth)
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{
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Array<RGB888> rgbArray;
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Array<RGB888> tmpArray;
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BitmapInfo bitmapInfo;
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float heightFactor;
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float aspectRatio;
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int newHeight;
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newWidth-=(newWidth%4); // align the width on DWORD boundary
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if(!isOkay())return false;
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aspectRatio=(float)width()/(float)height();
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newHeight=(float)newWidth/aspectRatio;
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heightFactor=(float)newHeight/height();
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bitmapInfo.rgbColors(0);
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bitmapInfo.bitCount(BitmapInfo::Bit24);
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bitmapInfo.width(newWidth);
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bitmapInfo.height(int((float)getBitmapInfo().height()*heightFactor));
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if(bitmapInfo.height()<0)bitmapInfo.height(-newHeight);
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else bitmapInfo.height(newHeight);
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bitmapInfo.planes(1);
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bitmapInfo.compression(BI_RGB);
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bitmapInfo.sizeImage(0);
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bitmapInfo.colorUsed(0);
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bitmapInfo.colorImportant(0);
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tmpArray.size(bitmapInfo.width()*height());
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for(int row=0;row<height();row++)::resampleClipRow(&getRGBArray()[(row*width())],&tmpArray[(row*newWidth)],width(),newWidth);
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rgbArray.size(bitmapInfo.width()*(bitmapInfo.height()<0?-bitmapInfo.height():bitmapInfo.height()));
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for(int col=0;col<bitmapInfo.width();col++)::resampleClipCol(&tmpArray[col],&rgbArray[col],height(),bitmapInfo.width(),bitmapInfo.height()<0?-bitmapInfo.height():bitmapInfo.height(),bitmapInfo.width());
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destroy();
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getBitmapInfo()=bitmapInfo;
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getRGBArray()=rgbArray;
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mhBitmap=::CreateDIBitmap((HDC)pureDevice,(BITMAPINFOHEADER*)getBitmapInfo(),CBM_INIT,&getRGBArray()[0],(BITMAPINFO*)getBitmapInfo(),DIB_RGB_COLORS);
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// BITMAP bm;
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// ::GetObject(mhBitmap,sizeof(BITMAP),&bm);
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return true;
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}
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/*
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*/
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