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Color spaces and images - bugfixing, compliance to PDF 2.0 specification

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This commit is contained in:
Jakub Melka
2020-08-15 15:57:55 +02:00
parent 8eedb45576
commit 7129793109
5 changed files with 115 additions and 8 deletions
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14
PdfForQtLib/sources/pdfcolorspaces.cpp
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@ -1401,7 +1401,7 @@ PDFSeparationColorSpace::PDFSeparationColorSpace(QByteArray&& colorName, PDFColo
QColor PDFSeparationColorSpace::getDefaultColor(const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
{
return getColor(PDFColor(0.0f), cms, intent, reporter);
return getColor(PDFColor(1.0f), cms, intent, reporter);
}
QColor PDFSeparationColorSpace::getColor(const PDFColor& color, const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
@ -1528,9 +1528,10 @@ PDFDeviceNColorSpace::PDFDeviceNColorSpace(PDFDeviceNColorSpace::Type type,
m_processColorSpace(qMove(processColorSpace)),
m_tintTransform(qMove(tintTransform)),
m_colorantsPrintingOrder(qMove(colorantsPrintingOrder)),
m_processColorSpaceComponents(qMove(processColorSpaceComponents))
m_processColorSpaceComponents(qMove(processColorSpaceComponents)),
m_isNone(false)
{
m_isNone = std::all_of(m_colorants.cbegin(), m_colorants.cend(), [](const auto& colorant) { return colorant.name == "None"; });
}
QColor PDFDeviceNColorSpace::getDefaultColor(const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
@ -1550,6 +1551,13 @@ QColor PDFDeviceNColorSpace::getDefaultColor(const PDFCMS* cms, RenderingIntent
QColor PDFDeviceNColorSpace::getColor(const PDFColor& color, const PDFCMS* cms, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
{
// According to the PDF 2.0 specification, DeviceN color space, with all colorant name "None"
// should not produce any visible output.
if (m_isNone)
{
return Qt::transparent;
}
// Input values
std::vector<double> inputColor(color.size(), 0.0);
for (size_t i = 0, count = inputColor.size(); i < count; ++i)