SVGStopElement.cpp [plain text]
#include "config.h"
#include "SVGStopElement.h"
#include "Document.h"
#include "RenderSVGGradientStop.h"
#include "RenderSVGResource.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGStopElement);
inline SVGStopElement::SVGStopElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
{
ASSERT(hasTagName(SVGNames::stopTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::offsetAttr, &SVGStopElement::m_offset>();
});
}
Ref<SVGStopElement> SVGStopElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGStopElement(tagName, document));
}
void SVGStopElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::offsetAttr) {
if (value.endsWith('%'))
m_offset->setBaseValInternal(value.string().left(value.length() - 1).toFloat() / 100.0f);
else
m_offset->setBaseValInternal(value.toFloat());
return;
}
SVGElement::parseAttribute(name, value);
}
void SVGStopElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::offsetAttr) {
if (auto renderer = this->renderer()) {
InstanceInvalidationGuard guard(*this);
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
}
return;
}
SVGElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGStopElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGGradientStop>(*this, WTFMove(style));
}
bool SVGStopElement::rendererIsNeeded(const RenderStyle&)
{
return true;
}
Color SVGStopElement::stopColorIncludingOpacity() const
{
if (!renderer())
return Color::transparentBlack;
auto& style = renderer()->style();
auto& svgStyle = style.svgStyle();
auto stopColor = style.colorResolvingCurrentColor(svgStyle.stopColor());
return stopColor.colorWithAlphaMultipliedBy(svgStyle.stopOpacity());
}
}