SVGGraphicsElement.cpp [plain text]
#include "config.h"
#include "SVGGraphicsElement.h"
#include "RenderSVGPath.h"
#include "RenderSVGResource.h"
#include "SVGMatrix.h"
#include "SVGNames.h"
#include "SVGPathData.h"
#include "SVGRect.h"
#include "SVGSVGElement.h"
#include "SVGStringList.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGGraphicsElement);
SVGGraphicsElement::SVGGraphicsElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
, SVGTests(this)
, m_shouldIsolateBlending(false)
{
registerAttributes();
}
SVGGraphicsElement::~SVGGraphicsElement() = default;
Ref<SVGMatrix> SVGGraphicsElement::getCTMForBindings()
{
return SVGMatrix::create(getCTM());
}
AffineTransform SVGGraphicsElement::getCTM(StyleUpdateStrategy styleUpdateStrategy)
{
return SVGLocatable::computeCTM(this, SVGLocatable::NearestViewportScope, styleUpdateStrategy);
}
Ref<SVGMatrix> SVGGraphicsElement::getScreenCTMForBindings()
{
return SVGMatrix::create(getScreenCTM());
}
AffineTransform SVGGraphicsElement::getScreenCTM(StyleUpdateStrategy styleUpdateStrategy)
{
return SVGLocatable::computeCTM(this, SVGLocatable::ScreenScope, styleUpdateStrategy);
}
AffineTransform SVGGraphicsElement::animatedLocalTransform() const
{
AffineTransform matrix;
auto* style = renderer() ? &renderer()->style() : nullptr;
if (style && style->hasTransform()) {
FloatRect boundingBox;
switch (style->transformBox()) {
case TransformBox::FillBox:
boundingBox = renderer()->objectBoundingBox();
break;
case TransformBox::BorderBox:
case TransformBox::ViewBox: {
FloatSize viewportSize;
SVGLengthContext(this).determineViewport(viewportSize);
boundingBox.setSize(viewportSize);
break;
}
}
TransformationMatrix transform;
style->applyTransform(transform, boundingBox);
matrix = transform.toAffineTransform();
float zoom = style->effectiveZoom();
if (zoom != 1) {
matrix.setE(matrix.e() / zoom);
matrix.setF(matrix.f() / zoom);
}
} else
transform().concatenate(matrix);
if (m_supplementalTransform)
return *m_supplementalTransform * matrix;
return matrix;
}
AffineTransform* SVGGraphicsElement::supplementalTransform()
{
if (!m_supplementalTransform)
m_supplementalTransform = std::make_unique<AffineTransform>();
return m_supplementalTransform.get();
}
void SVGGraphicsElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::transformAttr, &SVGGraphicsElement::m_transform>();
}
void SVGGraphicsElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::transformAttr) {
SVGTransformListValues newList;
newList.parse(value);
m_transform.detachAnimatedListWrappers(attributeOwnerProxy(), newList.size());
m_transform.setValue(newList);
return;
}
SVGElement::parseAttribute(name, value);
SVGTests::parseAttribute(name, value);
}
void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
auto renderer = this->renderer();
if (!renderer)
return;
if (attrName == SVGNames::transformAttr) {
renderer->setNeedsTransformUpdate();
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
return;
}
}
SVGElement::svgAttributeChanged(attrName);
SVGTests::svgAttributeChanged(attrName);
}
SVGElement* SVGGraphicsElement::nearestViewportElement() const
{
return SVGTransformable::nearestViewportElement(this);
}
SVGElement* SVGGraphicsElement::farthestViewportElement() const
{
return SVGTransformable::farthestViewportElement(this);
}
Ref<SVGRect> SVGGraphicsElement::getBBoxForBindings()
{
return SVGRect::create(getBBox());
}
FloatRect SVGGraphicsElement::getBBox(StyleUpdateStrategy styleUpdateStrategy)
{
return SVGTransformable::getBBox(this, styleUpdateStrategy);
}
RenderPtr<RenderElement> SVGGraphicsElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGPath>(*this, WTFMove(style));
}
Path SVGGraphicsElement::toClipPath()
{
Path path = pathFromGraphicsElement(this);
path.transform(animatedLocalTransform());
return path;
}
}