SVGPaintServer LayoutSVGResourcePattern::preparePaintServer(const LayoutObject& object)
{
clearInvalidationMask();
SVGPatternElement* patternElement = toSVGPatternElement(element());
if (!patternElement)
return SVGPaintServer::invalid();
if (m_shouldCollectPatternAttributes) {
patternElement->synchronizeAnimatedSVGAttribute(anyQName());
#if ENABLE(OILPAN)
m_attributesWrapper->set(PatternAttributes());
#else
m_attributes = PatternAttributes();
#endif
patternElement->collectPatternAttributes(mutableAttributes());
m_shouldCollectPatternAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object.objectBoundingBox();
if (attributes().patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
return SVGPaintServer::invalid();
PatternData* patternData = patternForLayoutObject(object);
if (!patternData || !patternData->pattern)
return SVGPaintServer::invalid();
patternData->pattern->setPatternSpaceTransform(patternData->transform);
return SVGPaintServer(patternData->pattern);
}
SVGPaintServer SVGPaintServer::requestForLayoutObject(const LayoutObject& layoutObject, const ComputedStyle& style, LayoutSVGResourceMode resourceMode)
{
ASSERT(resourceMode == ApplyToFillMode || resourceMode == ApplyToStrokeMode);
SVGPaintDescription paintDescription = requestPaint(layoutObject, style, resourceMode);
if (!paintDescription.isValid)
return invalid();
if (!paintDescription.resource)
return SVGPaintServer(paintDescription.color);
SVGPaintServer paintServer = paintDescription.resource->preparePaintServer(layoutObject);
if (paintServer.isValid())
return paintServer;
if (paintDescription.hasFallback)
return SVGPaintServer(paintDescription.color);
return invalid();
}
SVGPaintServer LayoutSVGResourceGradient::preparePaintServer(
const LayoutObject& object) {
clearInvalidationMask();
// Be sure to synchronize all SVG properties on the gradientElement _before_
// processing any further. Otherwhise the call to collectGradientAttributes()
// in createTileImage(), may cause the SVG DOM property synchronization to
// kick in, which causes removeAllClientsFromCache() to be called, which in
// turn deletes our GradientData object! Leaving out the line below will cause
// svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
SVGGradientElement* gradientElement = toSVGGradientElement(element());
if (!gradientElement)
return SVGPaintServer::invalid();
if (m_shouldCollectGradientAttributes) {
gradientElement->synchronizeAnimatedSVGAttribute(anyQName());
if (!collectGradientAttributes(gradientElement))
return SVGPaintServer::invalid();
m_shouldCollectGradientAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height
// and objectBoundingBox is specified, then the given effect (e.g. a gradient
// or a filter) will be ignored.
FloatRect objectBoundingBox = object.objectBoundingBox();
if (gradientUnits() == SVGUnitTypes::kSvgUnitTypeObjectboundingbox &&
objectBoundingBox.isEmpty())
return SVGPaintServer::invalid();
std::unique_ptr<GradientData>& gradientData =
m_gradientMap.add(&object, nullptr).storedValue->value;
if (!gradientData)
gradientData = WTF::wrapUnique(new GradientData);
// Create gradient object
if (!gradientData->gradient) {
gradientData->gradient = buildGradient();
// We want the text bounding box applied to the gradient space transform
// now, so the gradient shader can use it.
if (gradientUnits() == SVGUnitTypes::kSvgUnitTypeObjectboundingbox &&
!objectBoundingBox.isEmpty()) {
gradientData->userspaceTransform.translate(objectBoundingBox.x(),
objectBoundingBox.y());
gradientData->userspaceTransform.scaleNonUniform(
objectBoundingBox.width(), objectBoundingBox.height());
}
AffineTransform gradientTransform = calculateGradientTransform();
gradientData->userspaceTransform *= gradientTransform;
}
if (!gradientData->gradient)
return SVGPaintServer::invalid();
return SVGPaintServer(gradientData->gradient,
gradientData->userspaceTransform);
}