Initial

browse/dib24.cpp

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+#include <browse/dib24.hpp>
+
+bool DIB24::create(int width,int height,PureDevice &pureDevice)
+{
+  destroy();
+	if(!width||!height||!pureDevice.isOkay())return false;
+	mBitmapInfo.rgbColors(0);
+	mBitmapInfo.bitCount(BitmapInfo::Bit24);
+	mBitmapInfo.width(width);
+	mBitmapInfo.height(height);
+	mBitmapInfo.planes(1);
+	mBitmapInfo.compression(BI_RGB);
+  mBitmapInfo.sizeImage(0);
+	mBitmapInfo.colorUsed(0);
+	mBitmapInfo.colorImportant(0);
+	verifyDimensions(mBitmapInfo);
+	mExtent=mBitmapInfo.width()*(mBitmapInfo.height()<0?-mBitmapInfo.height():mBitmapInfo.height());
+	mhBitmap=::CreateDIBSection((HDC)pureDevice,(BITMAPINFO*)mBitmapInfo,DIB_RGB_COLORS,(void**)&mpRGBArray,0,0);
+	return isOkay();
+}
+
+bool DIB24::draw(PureDevice &pureDevice,const Rect &dstRect,const Point &srcPoint)
+{
+  PureDevice compatibleDevice;
+	if(!isOkay())return FALSE;
+	compatibleDevice.compatibleDevice(pureDevice);
+	compatibleDevice.select((GDIObj)mhBitmap,TRUE);
+	pureDevice.bitBlt(dstRect,compatibleDevice,srcPoint);
+	compatibleDevice.select((GDIObj)mhBitmap,FALSE);
+	return true;
+}
+
+void DIB24::verifyDimensions(BitmapInfo &someBitmapInfo)
+{
+	DWORD desiredHeight(someBitmapInfo.height()<0?-someBitmapInfo.height():someBitmapInfo.height());
+  DWORD desiredWidth(someBitmapInfo.width());
+	DWORD imageExtent;
+
+	imageExtent=(((((LONG)desiredWidth*8)+31)&~31)>>3)*(LONG)desiredHeight;
+	if(imageExtent==(LONG)desiredWidth*(LONG)desiredHeight)return;
+	else desiredWidth=(WORD)(imageExtent/(LONG)desiredHeight);
+	someBitmapInfo.width(desiredWidth);
+}
+
+bool DIB24::setAt(DWORD row,DWORD col,JPGImage &jpgImage)
+{
+  DWORD srcWidth;
+	DWORD srcHeight;
+	DWORD dstWidth;
+	DWORD dstHeight;
+  RGB888 *ptrSrcCol;
+	RGB888 *ptrDstCol;
+
+  if(!isOkay())return false;
+	srcWidth=jpgImage.width();
+	srcHeight=jpgImage.height();
+	dstWidth=mBitmapInfo.width();
+	dstHeight=mBitmapInfo.height()<0?-mBitmapInfo.height():mBitmapInfo.height();
+  for(int srcRow=0,dstRow=row;srcRow<srcHeight;srcRow++,dstRow++)
+	{
+	  if(jpgImage.getBitmapInfo().height()<0)ptrSrcCol=&jpgImage.getRGBArray()[srcRow*jpgImage.width()];
+	  else ptrSrcCol=&jpgImage.getRGBArray()[(jpgImage.getBitmapInfo().width()*(-jpgImage.getBitmapInfo().height()))-(((srcRow*jpgImage.getBitmapInfo().width())+jpgImage.getBitmapInfo().width()))];
+	  if(mBitmapInfo.height()<0)ptrDstCol=&mpRGBArray[dstRow*width()+col];
+	  else ptrDstCol=&mpRGBArray[(mBitmapInfo.width()*(-mBitmapInfo.height()))-(((dstRow*mBitmapInfo.width())+mBitmapInfo.width()))+col];
+    ::memcpy(ptrDstCol,ptrSrcCol,srcWidth*sizeof(RGB888));
+	}
+	return true;
+}
+
+
+