SVGStopElement.cpp [plain text]
#include "config.h"
#include "SVGStopElement.h"
#include "Attribute.h"
#include "Document.h"
#include "RenderSVGGradientStop.h"
#include "RenderSVGResource.h"
#include "SVGElementInstance.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
DEFINE_ANIMATED_NUMBER(SVGStopElement, SVGNames::offsetAttr, Offset, offset)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGStopElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(offset)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGElement)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGStopElement::SVGStopElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
, m_offset(0)
{
ASSERT(hasTagName(SVGNames::stopTag));
registerAnimatedPropertiesForSVGStopElement();
}
PassRefPtr<SVGStopElement> SVGStopElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(new SVGStopElement(tagName, document));
}
bool SVGStopElement::isSupportedAttribute(const QualifiedName& attrName)
{
static NeverDestroyed<HashSet<QualifiedName>> supportedAttributes;
if (supportedAttributes.get().isEmpty())
supportedAttributes.get().add(SVGNames::offsetAttr);
return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName);
}
void SVGStopElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGElement::parseAttribute(name, value);
return;
}
if (name == SVGNames::offsetAttr) {
if (value.endsWith('%'))
setOffsetBaseValue(value.string().left(value.length() - 1).toFloat() / 100.0f);
else
setOffsetBaseValue(value.toFloat());
return;
}
ASSERT_NOT_REACHED();
}
void SVGStopElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::offsetAttr) {
if (auto renderer = this->renderer())
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
return;
}
ASSERT_NOT_REACHED();
}
RenderPtr<RenderElement> SVGStopElement::createElementRenderer(PassRef<RenderStyle> style)
{
return createRenderer<RenderSVGGradientStop>(*this, WTF::move(style));
}
bool SVGStopElement::rendererIsNeeded(const RenderStyle&)
{
return true;
}
Color SVGStopElement::stopColorIncludingOpacity() const
{
RenderStyle* style = renderer() ? &renderer()->style() : nullptr;
if (!style)
return Color(Color::transparent, true);
const SVGRenderStyle& svgStyle = style->svgStyle();
return colorWithOverrideAlpha(svgStyle.stopColor().rgb(), svgStyle.stopOpacity());
}
}