| /* |
| * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com> |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved. |
| * Copyright (C) 2018-2019 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "SVGFilterElement.h" |
| |
| #include "RenderSVGResourceFilter.h" |
| #include "SVGFilterBuilder.h" |
| #include "SVGFilterPrimitiveStandardAttributes.h" |
| #include "SVGNames.h" |
| #include "SVGParserUtilities.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFilterElement); |
| |
| inline SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document& document) |
| : SVGElement(tagName, document) |
| , SVGExternalResourcesRequired(this) |
| , SVGURIReference(this) |
| { |
| // Spec: If the x/y attribute is not specified, the effect is as if a value of "-10%" were specified. |
| // Spec: If the width/height attribute is not specified, the effect is as if a value of "120%" were specified. |
| ASSERT(hasTagName(SVGNames::filterTag)); |
| |
| static std::once_flag onceFlag; |
| std::call_once(onceFlag, [] { |
| PropertyRegistry::registerProperty<SVGNames::filterUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_filterUnits>(); |
| PropertyRegistry::registerProperty<SVGNames::primitiveUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_primitiveUnits>(); |
| PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGFilterElement::m_x>(); |
| PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGFilterElement::m_y>(); |
| PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGFilterElement::m_width>(); |
| PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGFilterElement::m_height>(); |
| }); |
| } |
| |
| Ref<SVGFilterElement> SVGFilterElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(*new SVGFilterElement(tagName, document)); |
| } |
| |
| void SVGFilterElement::parseAttribute(const QualifiedName& name, const AtomString& value) |
| { |
| SVGParsingError parseError = NoError; |
| |
| if (name == SVGNames::filterUnitsAttr) { |
| SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value); |
| if (propertyValue > 0) |
| m_filterUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue); |
| } else if (name == SVGNames::primitiveUnitsAttr) { |
| SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value); |
| if (propertyValue > 0) |
| m_primitiveUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue); |
| } else if (name == SVGNames::xAttr) |
| m_x->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError)); |
| else if (name == SVGNames::yAttr) |
| m_y->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError)); |
| else if (name == SVGNames::widthAttr) |
| m_width->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError)); |
| else if (name == SVGNames::heightAttr) |
| m_height->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError)); |
| |
| reportAttributeParsingError(parseError, name, value); |
| |
| SVGElement::parseAttribute(name, value); |
| SVGURIReference::parseAttribute(name, value); |
| SVGExternalResourcesRequired::parseAttribute(name, value); |
| } |
| |
| void SVGFilterElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (PropertyRegistry::isAnimatedLengthAttribute(attrName)) { |
| InstanceInvalidationGuard guard(*this); |
| invalidateSVGPresentationAttributeStyle(); |
| return; |
| } |
| |
| if (PropertyRegistry::isKnownAttribute(attrName) || SVGURIReference::isKnownAttribute(attrName)) { |
| if (auto* renderer = this->renderer()) |
| renderer->setNeedsLayout(); |
| return; |
| } |
| |
| SVGElement::svgAttributeChanged(attrName); |
| SVGExternalResourcesRequired::svgAttributeChanged(attrName); |
| } |
| |
| void SVGFilterElement::childrenChanged(const ChildChange& change) |
| { |
| SVGElement::childrenChanged(change); |
| |
| if (change.source == ChildChangeSource::Parser) |
| return; |
| |
| if (RenderObject* object = renderer()) |
| object->setNeedsLayout(); |
| } |
| |
| RenderPtr<RenderElement> SVGFilterElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&) |
| { |
| return createRenderer<RenderSVGResourceFilter>(*this, WTFMove(style)); |
| } |
| |
| bool SVGFilterElement::childShouldCreateRenderer(const Node& child) const |
| { |
| if (!child.isSVGElement()) |
| return false; |
| |
| const SVGElement& svgElement = downcast<SVGElement>(child); |
| |
| static NeverDestroyed<HashSet<QualifiedName>> allowedChildElementTags; |
| if (allowedChildElementTags.get().isEmpty()) { |
| allowedChildElementTags.get().add(SVGNames::feBlendTag); |
| allowedChildElementTags.get().add(SVGNames::feColorMatrixTag); |
| allowedChildElementTags.get().add(SVGNames::feComponentTransferTag); |
| allowedChildElementTags.get().add(SVGNames::feCompositeTag); |
| allowedChildElementTags.get().add(SVGNames::feConvolveMatrixTag); |
| allowedChildElementTags.get().add(SVGNames::feDiffuseLightingTag); |
| allowedChildElementTags.get().add(SVGNames::feDisplacementMapTag); |
| allowedChildElementTags.get().add(SVGNames::feDistantLightTag); |
| allowedChildElementTags.get().add(SVGNames::feDropShadowTag); |
| allowedChildElementTags.get().add(SVGNames::feFloodTag); |
| allowedChildElementTags.get().add(SVGNames::feFuncATag); |
| allowedChildElementTags.get().add(SVGNames::feFuncBTag); |
| allowedChildElementTags.get().add(SVGNames::feFuncGTag); |
| allowedChildElementTags.get().add(SVGNames::feFuncRTag); |
| allowedChildElementTags.get().add(SVGNames::feGaussianBlurTag); |
| allowedChildElementTags.get().add(SVGNames::feImageTag); |
| allowedChildElementTags.get().add(SVGNames::feMergeTag); |
| allowedChildElementTags.get().add(SVGNames::feMergeNodeTag); |
| allowedChildElementTags.get().add(SVGNames::feMorphologyTag); |
| allowedChildElementTags.get().add(SVGNames::feOffsetTag); |
| allowedChildElementTags.get().add(SVGNames::fePointLightTag); |
| allowedChildElementTags.get().add(SVGNames::feSpecularLightingTag); |
| allowedChildElementTags.get().add(SVGNames::feSpotLightTag); |
| allowedChildElementTags.get().add(SVGNames::feTileTag); |
| allowedChildElementTags.get().add(SVGNames::feTurbulenceTag); |
| } |
| |
| return allowedChildElementTags.get().contains<SVGAttributeHashTranslator>(svgElement.tagQName()); |
| } |
| |
| } |