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Issue #108: Add accessibility options in pdf reader

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This commit is contained in:
Jakub Melka
2023-11-18 18:52:18 +01:00
parent 2408c61b5f
commit 6f6ddaab04
23 changed files with 600 additions and 89 deletions
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37
Pdf4QtLib/sources/pdfrenderer.cpp
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@ -115,6 +115,36 @@ QTransform PDFRenderer::createMediaBoxToDevicePointMatrix(const QRectF& mediaBox
return matrix;
}
void PDFRenderer::applyFeaturesToColorConvertor(const Features& features, PDFColorConvertor& convertor)
{
convertor.setMode(PDFColorConvertor::Mode::Normal);
if (features.testFlag(ColorAdjust_Invert))
{
convertor.setMode(PDFColorConvertor::Mode::InvertedColors);
}
if (features.testFlag(ColorAdjust_Grayscale))
{
convertor.setMode(PDFColorConvertor::Mode::Grayscale);
}
if (features.testFlag(ColorAdjust_HighContrast))
{
convertor.setMode(PDFColorConvertor::Mode::HighContrast);
}
if (features.testFlag(ColorAdjust_Bitonal))
{
convertor.setMode(PDFColorConvertor::Mode::Bitonal);
}
if (features.testFlag(ColorAdjust_CustomColors))
{
convertor.setMode(PDFColorConvertor::Mode::CustomColors);
}
}
const PDFOperationControl* PDFRenderer::getOperationControl() const
{
return m_operationControl;
@ -181,10 +211,9 @@ void PDFRenderer::compile(PDFPrecompiledPage* precompiledPage, size_t pageIndex)
generator.setOperationControl(m_operationControl);
QList<PDFRenderError> errors = generator.processContents();
if (m_features.testFlag(InvertColors))
{
precompiledPage->invertColors();
}
PDFColorConvertor colorConvertor = m_cms->getColorConvertor();
PDFRenderer::applyFeaturesToColorConvertor(m_features, colorConvertor);
precompiledPage->convertColors(colorConvertor);
precompiledPage->optimize();
precompiledPage->finalize(timer.nsecsElapsed(), qMove(errors));