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Axial shading sampling

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This commit is contained in:
Jakub Melka
2021-03-01 15:24:04 +01:00
parent 5b8b1de2db
commit d9c6c5e2b4
9 changed files with 405 additions and 26 deletions
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71
Pdf4QtLib/sources/pdfpagecontentprocessor.cpp
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@ -359,6 +359,19 @@ void PDFPageContentProcessor::performPathPainting(const QPainterPath& path, bool
Q_UNUSED(fillRule);
}
bool PDFPageContentProcessor::performPathPaintingUsingShading(const QPainterPath& path, bool stroke, bool fill, const PDFShadingPattern* shadingPattern)
{
Q_UNUSED(path);
Q_UNUSED(shadingPattern);
return false;
}
void PDFPageContentProcessor::performFinishPathPainting()
{
}
void PDFPageContentProcessor::performClipping(const QPainterPath& path, Qt::FillRule fillRule)
{
Q_UNUSED(path);
@ -820,21 +833,24 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
settings.userSpaceToDeviceSpaceMatrix = getPatternBaseMatrix();
settings.initResolution();
PDFMesh mesh = shadingPattern->createMesh(settings, m_CMS, m_graphicState.getRenderingIntent(), this);
// Now, merge the current path to the mesh clipping path
QPainterPath boundingPath = mesh.getBoundingPath();
if (boundingPath.isEmpty())
if (!performPathPaintingUsingShading(path, false, true, shadingPattern))
{
boundingPath = getCurrentWorldMatrix().map(path);
}
else
{
boundingPath = boundingPath.intersected(path);
}
mesh.setBoundingPath(boundingPath);
PDFMesh mesh = shadingPattern->createMesh(settings, m_CMS, m_graphicState.getRenderingIntent(), this);
performMeshPainting(mesh);
// Now, merge the current path to the mesh clipping path
QPainterPath boundingPath = mesh.getBoundingPath();
if (boundingPath.isEmpty())
{
boundingPath = getCurrentWorldMatrix().map(path);
}
else
{
boundingPath = boundingPath.intersected(path);
}
mesh.setBoundingPath(boundingPath);
performMeshPainting(mesh);
}
}
break;
}
@ -917,8 +933,6 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
settings.userSpaceToDeviceSpaceMatrix = getPatternBaseMatrix();
settings.initResolution();
PDFMesh mesh = shadingPattern->createMesh(settings, m_CMS, m_graphicState.getRenderingIntent(), this);
// We must stroke the path.
QPainterPathStroker stroker;
stroker.setCapStyle(m_graphicState.getLineCapStyle());
@ -934,18 +948,23 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
}
QPainterPath strokedPath = stroker.createStroke(path);
QPainterPath boundingPath = mesh.getBoundingPath();
if (boundingPath.isEmpty())
if (!performPathPaintingUsingShading(strokedPath, true, false, shadingPattern))
{
boundingPath = getCurrentWorldMatrix().map(strokedPath);
}
else
{
boundingPath = boundingPath.intersected(strokedPath);
}
mesh.setBoundingPath(boundingPath);
PDFMesh mesh = shadingPattern->createMesh(settings, m_CMS, m_graphicState.getRenderingIntent(), this);
performMeshPainting(mesh);
QPainterPath boundingPath = mesh.getBoundingPath();
if (boundingPath.isEmpty())
{
boundingPath = getCurrentWorldMatrix().map(strokedPath);
}
else
{
boundingPath = boundingPath.intersected(strokedPath);
}
mesh.setBoundingPath(boundingPath);
performMeshPainting(mesh);
}
}
break;
}
@ -971,6 +990,8 @@ void PDFPageContentProcessor::processPathPainting(const QPainterPath& path, bool
{
performPathPainting(path, stroke, fill, text, fillRule);
}
performFinishPathPainting();
}
void PDFPageContentProcessor::processTillingPatternPainting(const PDFTilingPattern* tilingPattern,