165 lines
7.3 KiB
C++
165 lines
7.3 KiB
C++
/*
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* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
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* Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
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* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
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* Copyright (C) Research In Motion Limited 2010. All rights reserved.
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* Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
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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 "SVGFilterElement.h"
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#include "RenderSVGResourceFilter.h"
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#include "SVGFilterBuilder.h"
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#include "SVGFilterPrimitiveStandardAttributes.h"
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#include "SVGNames.h"
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#include "SVGParserUtilities.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(SVGFilterElement);
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inline SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document& document)
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: SVGElement(tagName, document)
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, SVGURIReference(this)
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{
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// Spec: If the x/y attribute is not specified, the effect is as if a value of "-10%" were specified.
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// Spec: If the width/height attribute is not specified, the effect is as if a value of "120%" were specified.
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ASSERT(hasTagName(SVGNames::filterTag));
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::filterUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_filterUnits>();
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PropertyRegistry::registerProperty<SVGNames::primitiveUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_primitiveUnits>();
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PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGFilterElement::m_x>();
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PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGFilterElement::m_y>();
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PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGFilterElement::m_width>();
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PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGFilterElement::m_height>();
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});
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}
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Ref<SVGFilterElement> SVGFilterElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new SVGFilterElement(tagName, document));
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}
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void SVGFilterElement::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::filterUnitsAttr) {
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SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
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if (propertyValue > 0)
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m_filterUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue);
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} else if (name == SVGNames::primitiveUnitsAttr) {
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SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
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if (propertyValue > 0)
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m_primitiveUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue);
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} else 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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SVGElement::parseAttribute(name, value);
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SVGURIReference::parseAttribute(name, value);
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}
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void SVGFilterElement::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (PropertyRegistry::isAnimatedLengthAttribute(attrName)) {
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InstanceInvalidationGuard guard(*this);
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invalidateSVGPresentationalHintStyle();
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return;
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}
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if (PropertyRegistry::isKnownAttribute(attrName) || SVGURIReference::isKnownAttribute(attrName)) {
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if (auto* renderer = this->renderer())
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renderer->setNeedsLayout();
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return;
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}
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SVGElement::svgAttributeChanged(attrName);
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}
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void SVGFilterElement::childrenChanged(const ChildChange& change)
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{
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SVGElement::childrenChanged(change);
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if (change.source == ChildChange::Source::Parser)
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return;
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if (RenderObject* object = renderer())
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object->setNeedsLayout();
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}
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RenderPtr<RenderElement> SVGFilterElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
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{
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return createRenderer<RenderSVGResourceFilter>(*this, WTFMove(style));
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}
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bool SVGFilterElement::childShouldCreateRenderer(const Node& child) const
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{
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if (!child.isSVGElement())
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return false;
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const SVGElement& svgElement = downcast<SVGElement>(child);
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static NeverDestroyed<HashSet<QualifiedName>> allowedChildElementTags;
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if (allowedChildElementTags.get().isEmpty()) {
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allowedChildElementTags.get().add(SVGNames::feBlendTag);
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allowedChildElementTags.get().add(SVGNames::feColorMatrixTag);
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allowedChildElementTags.get().add(SVGNames::feComponentTransferTag);
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allowedChildElementTags.get().add(SVGNames::feCompositeTag);
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allowedChildElementTags.get().add(SVGNames::feConvolveMatrixTag);
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allowedChildElementTags.get().add(SVGNames::feDiffuseLightingTag);
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allowedChildElementTags.get().add(SVGNames::feDisplacementMapTag);
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allowedChildElementTags.get().add(SVGNames::feDistantLightTag);
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allowedChildElementTags.get().add(SVGNames::feDropShadowTag);
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allowedChildElementTags.get().add(SVGNames::feFloodTag);
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allowedChildElementTags.get().add(SVGNames::feFuncATag);
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allowedChildElementTags.get().add(SVGNames::feFuncBTag);
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allowedChildElementTags.get().add(SVGNames::feFuncGTag);
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allowedChildElementTags.get().add(SVGNames::feFuncRTag);
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allowedChildElementTags.get().add(SVGNames::feGaussianBlurTag);
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allowedChildElementTags.get().add(SVGNames::feImageTag);
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allowedChildElementTags.get().add(SVGNames::feMergeTag);
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allowedChildElementTags.get().add(SVGNames::feMergeNodeTag);
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allowedChildElementTags.get().add(SVGNames::feMorphologyTag);
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allowedChildElementTags.get().add(SVGNames::feOffsetTag);
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allowedChildElementTags.get().add(SVGNames::fePointLightTag);
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allowedChildElementTags.get().add(SVGNames::feSpecularLightingTag);
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allowedChildElementTags.get().add(SVGNames::feSpotLightTag);
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allowedChildElementTags.get().add(SVGNames::feTileTag);
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allowedChildElementTags.get().add(SVGNames::feTurbulenceTag);
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}
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return allowedChildElementTags.get().contains<SVGAttributeHashTranslator>(svgElement.tagQName());
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}
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}
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