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Blend functions

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This commit is contained in:
Jakub Melka
2021-01-14 19:33:23 +01:00
parent ccb84401db
commit d3827cfcc4
8 changed files with 452 additions and 20 deletions
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26
Pdf4QtLib/sources/pdfpagecontentprocessor.cpp
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@ -455,6 +455,32 @@ bool PDFPageContentProcessor::isContentSuppressed() const
return std::any_of(m_markedContentStack.cbegin(), m_markedContentStack.cend(), [](const MarkedContentState& state) { return state.contentSuppressed; });
}
PDFPageContentProcessor::PDFTransparencyGroup PDFPageContentProcessor::parseTransparencyGroup(const PDFObject& object)
{
PDFTransparencyGroup group;
if (const PDFDictionary* transparencyDictionary = m_document->getDictionaryFromObject(object))
{
const PDFObject& colorSpaceObject = m_document->getObject(transparencyDictionary->get("CS"));
if (!colorSpaceObject.isNull())
{
group.colorSpacePointer = PDFAbstractColorSpace::createColorSpace(m_colorSpaceDictionary, m_document, colorSpaceObject);
if (group.colorSpacePointer && !group.colorSpacePointer->isBlendColorSpace())
{
reportRenderError(RenderErrorType::Error, PDFTranslationContext::tr("Transparency group blending color space is invalid."));
group.colorSpacePointer = nullptr;
}
}
PDFDocumentDataLoaderDecorator loader(m_document);
group.isolated = loader.readBooleanFromDictionary(transparencyDictionary, "I", false);
group.knockout = loader.readBooleanFromDictionary(transparencyDictionary, "K", false);
}
return group;
}
void PDFPageContentProcessor::processContent(const QByteArray& content)
{
PDFLexicalAnalyzer parser(content.constBegin(), content.constEnd());