mirror of
https://github.com/darlinghq/darling-WebCore.git
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126 lines
4.9 KiB
C++
126 lines
4.9 KiB
C++
/*
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* Copyright (C) 2006-2019 Apple Inc. All rights reserved.
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* Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2014 Adobe Systems Incorporated. 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 "SVGForeignObjectElement.h"
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#include "CSSPropertyNames.h"
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#include "RenderSVGForeignObject.h"
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#include "RenderSVGResource.h"
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#include "SVGLengthValue.h"
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#include "SVGNames.h"
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#include <wtf/Assertions.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(SVGForeignObjectElement);
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inline SVGForeignObjectElement::SVGForeignObjectElement(const QualifiedName& tagName, Document& document)
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: SVGGraphicsElement(tagName, document)
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{
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ASSERT(hasTagName(SVGNames::foreignObjectTag));
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGForeignObjectElement::m_x>();
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PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGForeignObjectElement::m_y>();
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PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGForeignObjectElement::m_width>();
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PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGForeignObjectElement::m_height>();
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});
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}
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Ref<SVGForeignObjectElement> SVGForeignObjectElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new SVGForeignObjectElement(tagName, document));
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}
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void SVGForeignObjectElement::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::xAttr)
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m_x->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
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else if (name == SVGNames::yAttr)
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m_y->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
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else if (name == SVGNames::widthAttr)
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m_width->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
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else if (name == SVGNames::heightAttr)
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m_height->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
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reportAttributeParsingError(parseError, name, value);
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SVGGraphicsElement::parseAttribute(name, value);
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}
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void SVGForeignObjectElement::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr) {
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invalidateSVGPresentationAttributeStyle();
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return;
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}
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if (attrName == SVGNames::xAttr || attrName == SVGNames::yAttr) {
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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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SVGGraphicsElement::svgAttributeChanged(attrName);
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}
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RenderPtr<RenderElement> SVGForeignObjectElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
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{
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document().setMayHaveRenderedSVGForeignObjects();
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return createRenderer<RenderSVGForeignObject>(*this, WTFMove(style));
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}
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bool SVGForeignObjectElement::childShouldCreateRenderer(const Node& child) const
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{
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// Disallow arbitary SVG content. Only allow proper <svg xmlns="svgNS"> subdocuments.
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if (child.isSVGElement())
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return child.hasTagName(SVGNames::svgTag);
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// Skip over SVG rules which disallow non-SVG kids
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return StyledElement::childShouldCreateRenderer(child);
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}
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bool SVGForeignObjectElement::rendererIsNeeded(const RenderStyle& style)
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{
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// Suppress foreignObject renderers in SVG hidden containers.
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// (https://bugs.webkit.org/show_bug.cgi?id=87297)
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// Note that we currently do not support foreignObject instantiation via <use>, hence it is safe
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// to use parentElement() here. If that changes, this method should be updated to use
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// parentOrShadowHostElement() instead.
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auto ancestor = makeRefPtr(parentElement());
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while (ancestor && ancestor->isSVGElement()) {
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if (ancestor->renderer() && ancestor->renderer()->isSVGHiddenContainer())
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return false;
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ancestor = ancestor->parentElement();
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}
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return SVGGraphicsElement::rendererIsNeeded(style);
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}
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}
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