ZDCPixmap::ZDCPixmap(const ZDCPixmap& iSource, const ZRectPOD& iSourceBounds)
{
ZRef<ZDCPixmapRep> sourceRep = iSource.GetRep();
if (not sourceRep)
return;
ZRectPOD originalBounds = sourceRep->GetBounds();
ZRectPOD realBounds = (iSourceBounds + LT(originalBounds)) & originalBounds;
if (sIsEmpty(realBounds))
return;
fRep = ZDCPixmapRep::sCreate(
sourceRep->GetRaster(), realBounds, sourceRep->GetPixelDesc());
}
ZDCPixmap::ZDCPixmap(const ZDCPixmap& iSource1, const ZDCPixmap& iSource2, const ZDCPixmap& iMask)
{
// An undersized or missing image is considered to be all black, so a
// missing mask means we're an exact copy of iSource1.
if (not iMask)
{
fRep = iSource1.GetRep();
return;
}
ZPointPOD source1Size = iSource1.Size();
ZPointPOD source2Size = iSource2.Size();
ZPointPOD maskSize = iMask.Size();
ZPointPOD resultSize;
resultSize.h = max(source1Size.h, max(source2Size.h, maskSize.h));
resultSize.v = max(source1Size.v, max(source2Size.v, maskSize.v));
EFormatStandard theStandardFormat =
sMapEfficientToStandard(eFormatEfficient_Color_32);
RasterDesc theRasterDesc(resultSize, theStandardFormat);
PixelDesc thePixelDesc(theStandardFormat);
fRep = ZDCPixmapRep::sCreate(theRasterDesc, sRect(resultSize), thePixelDesc);
// Do a simple version for now
for (ZCoord y = 0; y < resultSize.v; ++y)
{
for (ZCoord x = 0; x < resultSize.h; ++x)
{
ZRGBA source1Pixel = iSource1.GetPixel(x, y);
ZRGBA source2Pixel = iSource2.GetPixel(x, y);
ZRGBA maskPixel = iMask.GetPixel(x, y);
this->SetPixel(x, y,
source1Pixel * (ZRGBA::sWhite - maskPixel) + source2Pixel * maskPixel);
}
}
}