| /* |
| * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com> |
| * |
| * 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 "SVGTextPathElement.h" |
| |
| #include "RenderSVGResource.h" |
| #include "RenderSVGTextPath.h" |
| #include "SVGDocumentExtensions.h" |
| #include "SVGNames.h" |
| #include "XLinkNames.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(SVGTextPathElement); |
| |
| // Animated property definitions |
| DEFINE_ANIMATED_LENGTH(SVGTextPathElement, SVGNames::startOffsetAttr, StartOffset, startOffset) |
| DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::methodAttr, Method, method, SVGTextPathMethodType) |
| DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::spacingAttr, Spacing, spacing, SVGTextPathSpacingType) |
| DEFINE_ANIMATED_STRING(SVGTextPathElement, XLinkNames::hrefAttr, Href, href) |
| |
| BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGTextPathElement) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(startOffset) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(method) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(spacing) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(href) |
| REGISTER_PARENT_ANIMATED_PROPERTIES(SVGTextContentElement) |
| END_REGISTER_ANIMATED_PROPERTIES |
| |
| inline SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document& document) |
| : SVGTextContentElement(tagName, document) |
| , m_startOffset(LengthModeOther) |
| , m_method(SVGTextPathMethodAlign) |
| , m_spacing(SVGTextPathSpacingExact) |
| { |
| ASSERT(hasTagName(SVGNames::textPathTag)); |
| registerAnimatedPropertiesForSVGTextPathElement(); |
| } |
| |
| Ref<SVGTextPathElement> SVGTextPathElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(*new SVGTextPathElement(tagName, document)); |
| } |
| |
| SVGTextPathElement::~SVGTextPathElement() |
| { |
| clearResourceReferences(); |
| } |
| |
| void SVGTextPathElement::clearResourceReferences() |
| { |
| document().accessSVGExtensions().removeAllTargetReferencesForElement(this); |
| } |
| |
| bool SVGTextPathElement::isSupportedAttribute(const QualifiedName& attrName) |
| { |
| static const auto supportedAttributes = makeNeverDestroyed([] { |
| HashSet<QualifiedName> set; |
| SVGURIReference::addSupportedAttributes(set); |
| set.add({ SVGNames::startOffsetAttr.get(), SVGNames::methodAttr.get(), SVGNames::spacingAttr.get() }); |
| return set; |
| }()); |
| return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName); |
| } |
| |
| void SVGTextPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| SVGParsingError parseError = NoError; |
| |
| if (name == SVGNames::startOffsetAttr) |
| setStartOffsetBaseValue(SVGLengthValue::construct(LengthModeOther, value, parseError)); |
| else if (name == SVGNames::methodAttr) { |
| SVGTextPathMethodType propertyValue = SVGPropertyTraits<SVGTextPathMethodType>::fromString(value); |
| if (propertyValue > 0) |
| setMethodBaseValue(propertyValue); |
| } else if (name == SVGNames::spacingAttr) { |
| SVGTextPathSpacingType propertyValue = SVGPropertyTraits<SVGTextPathSpacingType>::fromString(value); |
| if (propertyValue > 0) |
| setSpacingBaseValue(propertyValue); |
| } |
| |
| reportAttributeParsingError(parseError, name, value); |
| |
| SVGTextContentElement::parseAttribute(name, value); |
| SVGURIReference::parseAttribute(name, value); |
| } |
| |
| void SVGTextPathElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (!isSupportedAttribute(attrName)) { |
| SVGTextContentElement::svgAttributeChanged(attrName); |
| return; |
| } |
| |
| InstanceInvalidationGuard guard(*this); |
| |
| if (SVGURIReference::isKnownAttribute(attrName)) { |
| buildPendingResource(); |
| return; |
| } |
| |
| if (attrName == SVGNames::startOffsetAttr) |
| updateRelativeLengthsInformation(); |
| |
| if (auto renderer = this->renderer()) |
| RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer); |
| } |
| |
| RenderPtr<RenderElement> SVGTextPathElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&) |
| { |
| return createRenderer<RenderSVGTextPath>(*this, WTFMove(style)); |
| } |
| |
| bool SVGTextPathElement::childShouldCreateRenderer(const Node& child) const |
| { |
| if (child.isTextNode() |
| || child.hasTagName(SVGNames::aTag) |
| || child.hasTagName(SVGNames::trefTag) |
| || child.hasTagName(SVGNames::tspanTag)) |
| return true; |
| |
| return false; |
| } |
| |
| bool SVGTextPathElement::rendererIsNeeded(const RenderStyle& style) |
| { |
| if (parentNode() |
| && (parentNode()->hasTagName(SVGNames::aTag) |
| || parentNode()->hasTagName(SVGNames::textTag))) |
| return StyledElement::rendererIsNeeded(style); |
| |
| return false; |
| } |
| |
| void SVGTextPathElement::buildPendingResource() |
| { |
| clearResourceReferences(); |
| if (!isConnected()) |
| return; |
| |
| String id; |
| auto target = makeRefPtr(SVGURIReference::targetElementFromIRIString(href(), document(), &id)); |
| if (!target) { |
| // Do not register as pending if we are already pending this resource. |
| if (document().accessSVGExtensions().isPendingResource(this, id)) |
| return; |
| |
| if (!id.isEmpty()) { |
| document().accessSVGExtensions().addPendingResource(id, this); |
| ASSERT(hasPendingResources()); |
| } |
| } else if (target->hasTagName(SVGNames::pathTag)) { |
| // Register us with the target in the dependencies map. Any change of hrefElement |
| // that leads to relayout/repainting now informs us, so we can react to it. |
| document().accessSVGExtensions().addElementReferencingTarget(this, downcast<SVGElement>(target.get())); |
| } |
| } |
| |
| Node::InsertedIntoAncestorResult SVGTextPathElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree) |
| { |
| SVGTextContentElement::insertedIntoAncestor(insertionType, parentOfInsertedTree); |
| return InsertedIntoAncestorResult::NeedsPostInsertionCallback; |
| } |
| |
| void SVGTextPathElement::didFinishInsertingNode() |
| { |
| buildPendingResource(); |
| } |
| |
| void SVGTextPathElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree) |
| { |
| SVGTextContentElement::removedFromAncestor(removalType, oldParentOfRemovedTree); |
| if (removalType.disconnectedFromDocument) |
| clearResourceReferences(); |
| } |
| |
| bool SVGTextPathElement::selfHasRelativeLengths() const |
| { |
| return startOffset().isRelative() |
| || SVGTextContentElement::selfHasRelativeLengths(); |
| } |
| |
| } |