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clarify we're not setting a pal index in the mask

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no logic changed intended, SetPixelIndex expands
to this, just want to clarify that this is an alpha
value, not an index into a palette

Change-Id: Ie9bb188b116adf3eab4e2bb1d6da8badbaead88b
This commit is contained in:
Caolán McNamara 2017-02-08 13:33:02 +00:00
parent 2c91fc1944
commit e5b23d924d
1 changed files with 2 additions and 2 deletions
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4
vcl/source/gdi/pngread.cxx
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@ -1628,7 +1628,7 @@ void PNGReaderImpl::ImplSetAlphaPixel( sal_uInt32 nY, sal_uInt32 nX,
nX >>= mnPreviewShift; nX >>= mnPreviewShift;
mxAcc->SetPixelIndex( nY, nX, nPalIndex ); mxAcc->SetPixelIndex( nY, nX, nPalIndex );
mpMaskAcc->SetPixelIndex( nY, nX, ~nAlpha ); mpMaskAcc->SetPixel(nY, nX, BitmapColor(~nAlpha));
} }
void PNGReaderImpl::ImplSetAlphaPixel( sal_uInt32 nY, sal_uInt32 nX, void PNGReaderImpl::ImplSetAlphaPixel( sal_uInt32 nY, sal_uInt32 nX,
@ -1642,7 +1642,7 @@ void PNGReaderImpl::ImplSetAlphaPixel( sal_uInt32 nY, sal_uInt32 nX,
mxAcc->SetPixel( nY, nX, rBitmapColor ); mxAcc->SetPixel( nY, nX, rBitmapColor );
if (!mpMaskAcc) if (!mpMaskAcc)
return; return;
mpMaskAcc->SetPixelIndex( nY, nX, ~nAlpha ); mpMaskAcc->SetPixel(nY, nX, BitmapColor(~nAlpha));
} }
sal_uInt32 PNGReaderImpl::ImplReadsal_uInt32() sal_uInt32 PNGReaderImpl::ImplReadsal_uInt32()