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Basic support for transparency

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This commit is contained in:
Jakub Melka
2019-09-29 15:44:35 +02:00
parent b09f9eff21
commit c1dfe0280c
10 changed files with 344 additions and 28 deletions
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26
PdfForQtLib/sources/pdfpainter.cpp
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@ -154,7 +154,7 @@ void PDFPainter::performMeshPainting(const PDFMesh& mesh)
{
m_painter->save();
m_painter->setWorldMatrix(QMatrix());
mesh.paint(m_painter);
mesh.paint(m_painter, getGraphicState()->getAlphaFilling());
m_painter->restore();
}
@ -173,16 +173,32 @@ void PDFPainter::performUpdateGraphicsState(const PDFPageContentProcessorState&
flags.testFlag(PDFPageContentProcessorState::StateLineCapStyle) ||
flags.testFlag(PDFPageContentProcessorState::StateLineJoinStyle) ||
flags.testFlag(PDFPageContentProcessorState::StateMitterLimit) ||
flags.testFlag(PDFPageContentProcessorState::StateLineDashPattern))
flags.testFlag(PDFPageContentProcessorState::StateLineDashPattern) ||
flags.testFlag(PDFPageContentProcessorState::StateAlphaStroking))
{
m_currentPen.dirty();
}
if (flags.testFlag(PDFPageContentProcessorState::StateFillColor))
if (flags.testFlag(PDFPageContentProcessorState::StateFillColor) ||
flags.testFlag(PDFPageContentProcessorState::StateAlphaFilling))
{
m_currentBrush.dirty();
}
// If current blend mode has changed, then update it
if (flags.testFlag(PDFPageContentProcessorState::StateBlendMode))
{
const BlendMode blendMode = state.getBlendMode();
const QPainter::CompositionMode compositionMode = PDFBlendModeInfo::getCompositionModeFromBlendMode(blendMode);
if (!PDFBlendModeInfo::isSupportedByQt(blendMode))
{
reportRenderError(RenderErrorType::NotImplemented, PDFTranslationContext::tr("Blend mode '%1' not supported.").arg(PDFBlendModeInfo::getBlendModeName(blendMode)));
}
m_painter->setCompositionMode(compositionMode);
}
PDFPageContentProcessor::performUpdateGraphicsState(state);
}
@ -215,7 +231,7 @@ bool PDFPainter::isContentSuppressedByOC(PDFObjectReference ocgOrOcmd)
QPen PDFPainter::getCurrentPenImpl() const
{
const PDFPageContentProcessorState* graphicState = getGraphicState();
const QColor& color = graphicState->getStrokeColor();
const QColor& color = graphicState->getStrokeColorWithAlpha();
if (color.isValid())
{
const PDFReal lineWidth = graphicState->getLineWidth();
@ -253,7 +269,7 @@ QPen PDFPainter::getCurrentPenImpl() const
QBrush PDFPainter::getCurrentBrushImpl() const
{
const PDFPageContentProcessorState* graphicState = getGraphicState();
const QColor& color = graphicState->getFillColor();
const QColor& color = graphicState->getFillColorWithAlpha();
if (color.isValid())
{
return QBrush(color, Qt::SolidPattern);