void RenderPath::calculateMarkerBoundsIfNeeded() const
{
Document* doc = document();
SVGElement* svgElement = static_cast<SVGElement*>(node());
ASSERT(svgElement && svgElement->document());
if (!svgElement->isStyled())
return;
SVGStyledElement* styledElement = static_cast<SVGStyledElement*>(svgElement);
if (!styledElement->supportsMarkers())
return;
const SVGRenderStyle* svgStyle = style()->svgStyle();
AtomicString startMarkerId(svgStyle->startMarker());
AtomicString midMarkerId(svgStyle->midMarker());
AtomicString endMarkerId(svgStyle->endMarker());
SVGResourceMarker* startMarker = getMarkerById(doc, startMarkerId, this);
SVGResourceMarker* midMarker = getMarkerById(doc, midMarkerId, this);
SVGResourceMarker* endMarker = getMarkerById(doc, endMarkerId, this);
if (!startMarker && !startMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(startMarkerId, styledElement);
else if (startMarker)
startMarker->addClient(styledElement);
if (!midMarker && !midMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(midMarkerId, styledElement);
else if (midMarker)
midMarker->addClient(styledElement);
if (!endMarker && !endMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(endMarkerId, styledElement);
else if (endMarker)
endMarker->addClient(styledElement);
if (!startMarker && !midMarker && !endMarker)
return;
float strokeWidth = SVGRenderStyle::cssPrimitiveToLength(this, svgStyle->strokeWidth(), 1.0f);
m_cachedLocalMarkerBBox = m_markerLayoutInfo.calculateBoundaries(startMarker, midMarker, endMarker, strokeWidth, m_path);
}
FloatRect RenderPath::drawMarkersIfNeeded(GraphicsContext* context, const FloatRect&, const Path& path) const
{
Document* doc = document();
SVGElement* svgElement = static_cast<SVGElement*>(node());
ASSERT(svgElement && svgElement->document() && svgElement->isStyled());
SVGStyledElement* styledElement = static_cast<SVGStyledElement*>(svgElement);
const SVGRenderStyle* svgStyle = style()->svgStyle();
AtomicString startMarkerId(svgStyle->startMarker());
AtomicString midMarkerId(svgStyle->midMarker());
AtomicString endMarkerId(svgStyle->endMarker());
SVGResourceMarker* startMarker = getMarkerById(doc, startMarkerId);
SVGResourceMarker* midMarker = getMarkerById(doc, midMarkerId);
SVGResourceMarker* endMarker = getMarkerById(doc, endMarkerId);
if (!startMarker && !startMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(startMarkerId, styledElement);
else if (startMarker)
startMarker->addClient(styledElement);
if (!midMarker && !midMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(midMarkerId, styledElement);
else if (midMarker)
midMarker->addClient(styledElement);
if (!endMarker && !endMarkerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(endMarkerId, styledElement);
else if (endMarker)
endMarker->addClient(styledElement);
if (!startMarker && !midMarker && !endMarker)
return FloatRect();
double strokeWidth = SVGRenderStyle::cssPrimitiveToLength(this, svgStyle->strokeWidth(), 1.0f);
DrawMarkersData data(context, startMarker, midMarker, strokeWidth);
path.apply(&data, drawStartAndMidMarkers);
data.previousMarkerData.marker = endMarker;
data.previousMarkerData.type = End;
drawMarkerWithData(context, data.previousMarkerData);
// We know the marker boundaries, only after they're drawn!
// Otherwhise we'd need to do all the marker calculation twice
// once here (through paint()) and once in absoluteClippedOverflowRect().
FloatRect bounds;
if (startMarker)
bounds.unite(startMarker->cachedBounds());
if (midMarker)
bounds.unite(midMarker->cachedBounds());
if (endMarker)
bounds.unite(endMarker->cachedBounds());
return bounds;
}