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Uncolored tiling patterns, tiling patterns colors

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Jakub Melka
2019-09-26 19:14:04 +02:00
parent 40f3f9f9b4
commit 59ad9afadd
7 changed files with 104 additions and 32 deletions
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82
PdfForQtLib/sources/pdfpagecontentprocessor.cpp
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@ -594,15 +594,15 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
if (fill)
{
const PDFPattern* pattern = getGraphicState()->getFillColorSpace()->getPattern();
if (pattern)
if (const PDFPatternColorSpace* patternColorSpace = getGraphicState()->getFillColorSpace()->asPatternColorSpace())
{
const PDFPattern* pattern = patternColorSpace->getPattern();
switch (pattern->getType())
{
case PatternType::Tiling:
{
const PDFTilingPattern* tilingPattern = pattern->getTilingPattern();
processTillingPatternPainting(tilingPattern, path);
processTillingPatternPainting(tilingPattern, path, patternColorSpace->getUncoloredPatternColorSpace(), patternColorSpace->getUncoloredPatternColor());
break;
}
@ -653,9 +653,9 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
if (stroke)
{
const PDFPattern* pattern = getGraphicState()->getStrokeColorSpace()->getPattern();
if (pattern)
if (const PDFPatternColorSpace* patternColorSpace = getGraphicState()->getFillColorSpace()->asPatternColorSpace())
{
const PDFPattern* pattern = patternColorSpace->getPattern();
switch (pattern->getType())
{
case PatternType::Tiling:
@ -676,7 +676,7 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
stroker.setDashOffset(lineDashPattern.getDashOffset());
}
QPainterPath strokedPath = stroker.createStroke(path);
processTillingPatternPainting(tilingPattern, strokedPath);
processTillingPatternPainting(tilingPattern, strokedPath, patternColorSpace->getUncoloredPatternColorSpace(), patternColorSpace->getUncoloredPatternColor());
break;
}
@ -745,7 +745,10 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
}
}
void PDFPageContentProcessor::processTillingPatternPainting(const PDFTilingPattern* tilingPattern, const QPainterPath& path)
void PDFPageContentProcessor::processTillingPatternPainting(const PDFTilingPattern* tilingPattern,
const QPainterPath& path,
PDFColorSpacePointer uncoloredPatternColorSpace,
PDFColor uncoloredPatternColor)
{
PDFPageContentProcessorStateGuard guard(this);
performClipping(path, path.fillRule());
@ -764,6 +767,33 @@ void PDFPageContentProcessor::processTillingPatternPainting(const PDFTilingPatte
QMatrix matrix = patternMatrix * m_pagePointToDevicePointMatrix.inverted();
QMatrix pathTransformationMatrix = m_graphicState.getCurrentTransformationMatrix() * matrix.inverted();
m_graphicState.setCurrentTransformationMatrix(matrix);
// Initialize colors for uncolored color space pattern
if (tilingPattern->getPaintingType() == PDFTilingPattern::PaintType::Uncolored)
{
if (!uncoloredPatternColorSpace)
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Uncolored tiling pattern has not underlying color space."));
}
m_graphicState.setStrokeColorSpace(uncoloredPatternColorSpace);
m_graphicState.setFillColorSpace(uncoloredPatternColorSpace);
QColor color = uncoloredPatternColorSpace->getCheckedColor(uncoloredPatternColor);
m_graphicState.setStrokeColor(color);
m_graphicState.setFillColor(color);
}
else
{
// Jakub Melka: According the specification, we set default color space and default color
m_graphicState.setStrokeColorSpace(m_deviceGrayColorSpace);
m_graphicState.setFillColorSpace(m_deviceGrayColorSpace);
QColor color = m_deviceGrayColorSpace->getDefaultColor();
m_graphicState.setStrokeColor(color);
m_graphicState.setFillColor(color);
}
updateGraphicState();
// Tiling parameters
@ -1951,17 +1981,25 @@ void PDFPageContentProcessor::operatorColorSetStrokingColorN()
// but default operator can use them (with exception of Pattern color space). For pattern color space,
// we treat this differently.
const PDFAbstractColorSpace* colorSpace = m_graphicState.getStrokeColorSpace();
if (colorSpace->getPattern())
if (const PDFPatternColorSpace* patternColorSpace = colorSpace->asPatternColorSpace())
{
if (m_operands.size() > 0)
const size_t operandCount = m_operands.size();
if (operandCount > 0)
{
// TODO: Implement tiling pattern colors
PDFOperandName name = readOperand<PDFOperandName>(m_operands.size() - 1);
PDFColorSpacePointer uncoloredColorSpace = patternColorSpace->getUncoloredPatternColorSpace();
PDFColor uncoloredPatternColor;
for (size_t i = 0; i < operandCount - 1; ++i)
{
uncoloredPatternColor.push_back(readOperand<PDFReal>(i));
}
PDFOperandName name = readOperand<PDFOperandName>(operandCount - 1);
if (m_patternDictionary && m_patternDictionary->hasKey(name.name))
{
// Create the pattern
PDFPatternPtr pattern = PDFPattern::createPattern(m_colorSpaceDictionary, m_document, m_patternDictionary->get(name.name));
m_graphicState.setStrokeColorSpace(QSharedPointer<PDFAbstractColorSpace>(new PDFPatternColorSpace(qMove(pattern))));
m_graphicState.setStrokeColorSpace(PDFColorSpacePointer(new PDFPatternColorSpace(qMove(pattern), qMove(uncoloredColorSpace), qMove(uncoloredPatternColor))));
updateGraphicState();
return;
}
@ -2009,17 +2047,25 @@ void PDFPageContentProcessor::operatorColorSetFillingColorN()
// but default operator can use them (with exception of Pattern color space). For pattern color space,
// we treat this differently.
const PDFAbstractColorSpace* colorSpace = m_graphicState.getFillColorSpace();
if (colorSpace->getPattern())
if (const PDFPatternColorSpace* patternColorSpace = colorSpace->asPatternColorSpace())
{
if (m_operands.size() > 0)
const size_t operandCount = m_operands.size();
if (operandCount > 0)
{
// TODO: Implement tiling pattern colors
PDFOperandName name = readOperand<PDFOperandName>(m_operands.size() - 1);
PDFColorSpacePointer uncoloredColorSpace = patternColorSpace->getUncoloredPatternColorSpace();
PDFColor uncoloredPatternColor;
for (size_t i = 0; i < operandCount - 1; ++i)
{
uncoloredPatternColor.push_back(readOperand<PDFReal>(i));
}
PDFOperandName name = readOperand<PDFOperandName>(operandCount - 1);
if (m_patternDictionary && m_patternDictionary->hasKey(name.name))
{
// Create the pattern
PDFPatternPtr pattern = PDFPattern::createPattern(m_colorSpaceDictionary, m_document, m_patternDictionary->get(name.name));
m_graphicState.setFillColorSpace(QSharedPointer<PDFAbstractColorSpace>(new PDFPatternColorSpace(qMove(pattern))));
m_graphicState.setFillColorSpace(QSharedPointer<PDFAbstractColorSpace>(new PDFPatternColorSpace(qMove(pattern), qMove(uncoloredColorSpace), qMove(uncoloredPatternColor))));
updateGraphicState();
return;
}
@ -2359,7 +2405,7 @@ void PDFPageContentProcessor::operatorShadingPaintShape(PDFPageContentProcessor:
// We will do a trick: we will set current fill color space, and then paint
// bounding rectangle in the color pattern.
m_graphicState.setFillColorSpace(PDFColorSpacePointer(new PDFPatternColorSpace(qMove(pattern))));
m_graphicState.setFillColorSpace(PDFColorSpacePointer(new PDFPatternColorSpace(qMove(pattern), nullptr, PDFColor())));
updateGraphicState();
Q_ASSERT(matrix.isInvertible());