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This commit is contained in:
Jakub Melka
2021-01-24 18:41:17 +01:00
parent 443c656a46
commit 77255cc56a
5 changed files with 173 additions and 44 deletions
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49
Pdf4QtLib/sources/pdfblendfunction.cpp
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@ -84,25 +84,27 @@ bool PDFBlendModeInfo::isSeparable(BlendMode mode)
{
switch (mode)
{
case BlendMode::Normal:
case BlendMode::Multiply:
case BlendMode::Screen:
case BlendMode::Overlay:
case BlendMode::Darken:
case BlendMode::Lighten:
case BlendMode::ColorDodge:
case BlendMode::ColorBurn:
case BlendMode::HardLight:
case BlendMode::SoftLight:
case BlendMode::Difference:
case BlendMode::Exclusion:
case BlendMode::Compatible:
case BlendMode::Normal:
case BlendMode::Multiply:
case BlendMode::Screen:
case BlendMode::Overlay:
case BlendMode::Darken:
case BlendMode::Lighten:
case BlendMode::ColorDodge:
case BlendMode::ColorBurn:
case BlendMode::HardLight:
case BlendMode::SoftLight:
case BlendMode::Difference:
case BlendMode::Exclusion:
case BlendMode::Compatible:
case BlendMode::Overprint_SelectBackdrop:
case BlendMode::Overprint_SelectNonZeroSourceOrBackdrop:
return true;
case BlendMode::Hue:
case BlendMode::Saturation:
case BlendMode::Color:
case BlendMode::Luminosity:
case BlendMode::Hue:
case BlendMode::Saturation:
case BlendMode::Color:
case BlendMode::Luminosity:
return false;
default:
@ -339,6 +341,19 @@ PDFColorComponent PDFBlendFunction::blend(BlendMode mode, PDFColorComponent Cb,
case BlendMode::Exclusion:
return Cb + Cs - 2.0f * Cb * Cs;
case BlendMode::Overprint_SelectBackdrop:
return Cb;
case BlendMode::Overprint_SelectNonZeroSourceOrBackdrop:
{
if (qFuzzyIsNull(Cs))
{
return Cb;
}
return Cs;
}
default:
{
Q_ASSERT(false);