181 lines
6.2 KiB
C++
181 lines
6.2 KiB
C++
/*
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* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com>
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* Copyright (C) 2018-2019 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "SVGTextPathElement.h"
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#include "RenderSVGResource.h"
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#include "RenderSVGTextPath.h"
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#include "SVGDocumentExtensions.h"
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#include "SVGNames.h"
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/NeverDestroyed.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(SVGTextPathElement);
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inline SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document& document)
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: SVGTextContentElement(tagName, document)
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, SVGURIReference(this)
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{
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ASSERT(hasTagName(SVGNames::textPathTag));
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::startOffsetAttr, &SVGTextPathElement::m_startOffset>();
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PropertyRegistry::registerProperty<SVGNames::methodAttr, SVGTextPathMethodType, &SVGTextPathElement::m_method>();
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PropertyRegistry::registerProperty<SVGNames::spacingAttr, SVGTextPathSpacingType, &SVGTextPathElement::m_spacing>();
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});
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}
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Ref<SVGTextPathElement> SVGTextPathElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new SVGTextPathElement(tagName, document));
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}
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SVGTextPathElement::~SVGTextPathElement()
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{
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clearResourceReferences();
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}
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void SVGTextPathElement::clearResourceReferences()
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{
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removeElementReference();
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}
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void SVGTextPathElement::parseAttribute(const QualifiedName& name, const AtomString& value)
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{
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SVGParsingError parseError = NoError;
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if (name == SVGNames::startOffsetAttr)
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m_startOffset->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Other, value, parseError));
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else if (name == SVGNames::methodAttr) {
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SVGTextPathMethodType propertyValue = SVGPropertyTraits<SVGTextPathMethodType>::fromString(value);
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if (propertyValue > 0)
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m_method->setBaseValInternal<SVGTextPathMethodType>(propertyValue);
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} else if (name == SVGNames::spacingAttr) {
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SVGTextPathSpacingType propertyValue = SVGPropertyTraits<SVGTextPathSpacingType>::fromString(value);
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if (propertyValue > 0)
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m_spacing->setBaseValInternal<SVGTextPathSpacingType>(propertyValue);
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}
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reportAttributeParsingError(parseError, name, value);
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SVGTextContentElement::parseAttribute(name, value);
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SVGURIReference::parseAttribute(name, value);
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}
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void SVGTextPathElement::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (PropertyRegistry::isKnownAttribute(attrName)) {
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InstanceInvalidationGuard guard(*this);
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if (attrName == SVGNames::startOffsetAttr)
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updateRelativeLengthsInformation();
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if (auto renderer = this->renderer())
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RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
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return;
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}
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if (SVGURIReference::isKnownAttribute(attrName)) {
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buildPendingResource();
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if (auto renderer = this->renderer())
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RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
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return;
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}
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SVGTextContentElement::svgAttributeChanged(attrName);
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}
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RenderPtr<RenderElement> SVGTextPathElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
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{
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return createRenderer<RenderSVGTextPath>(*this, WTFMove(style));
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}
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bool SVGTextPathElement::childShouldCreateRenderer(const Node& child) const
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{
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if (child.isTextNode()
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|| child.hasTagName(SVGNames::aTag)
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|| child.hasTagName(SVGNames::trefTag)
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|| child.hasTagName(SVGNames::tspanTag))
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return true;
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return false;
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}
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bool SVGTextPathElement::rendererIsNeeded(const RenderStyle& style)
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{
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if (parentNode()
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&& (parentNode()->hasTagName(SVGNames::aTag)
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|| parentNode()->hasTagName(SVGNames::textTag)))
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return StyledElement::rendererIsNeeded(style);
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return false;
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}
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void SVGTextPathElement::buildPendingResource()
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{
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clearResourceReferences();
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if (!isConnected())
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return;
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auto target = SVGURIReference::targetElementFromIRIString(href(), treeScope());
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if (!target.element) {
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// Do not register as pending if we are already pending this resource.
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if (document().accessSVGExtensions().isPendingResource(*this, target.identifier))
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return;
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if (!target.identifier.isEmpty()) {
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document().accessSVGExtensions().addPendingResource(target.identifier, *this);
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ASSERT(hasPendingResources());
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}
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} else if (target.element->hasTagName(SVGNames::pathTag))
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downcast<SVGElement>(*target.element).addReferencingElement(*this);
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}
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Node::InsertedIntoAncestorResult SVGTextPathElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
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{
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SVGTextContentElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
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return InsertedIntoAncestorResult::NeedsPostInsertionCallback;
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}
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void SVGTextPathElement::didFinishInsertingNode()
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{
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buildPendingResource();
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}
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void SVGTextPathElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
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{
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SVGTextContentElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
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if (removalType.disconnectedFromDocument)
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clearResourceReferences();
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}
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bool SVGTextPathElement::selfHasRelativeLengths() const
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{
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return startOffset().isRelative()
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|| SVGTextContentElement::selfHasRelativeLengths();
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}
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}
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