| /* |
| * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * |
| * 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 "core/svg/SVGPathElement.h" |
| |
| #include "core/layout/svg/LayoutSVGPath.h" |
| #include "core/svg/SVGMPathElement.h" |
| #include "core/svg/SVGPathQuery.h" |
| #include "core/svg/SVGPathUtilities.h" |
| #include "core/svg/SVGPointTearOff.h" |
| |
| namespace blink { |
| |
| class SVGAnimatedPathLength final : public SVGAnimatedNumber { |
| public: |
| static PassRefPtrWillBeRawPtr<SVGAnimatedPathLength> create(SVGPathElement* contextElement) |
| { |
| return adoptRefWillBeNoop(new SVGAnimatedPathLength(contextElement)); |
| } |
| |
| SVGParsingError setBaseValueAsString(const String& value) override |
| { |
| SVGParsingError parseStatus = SVGAnimatedNumber::setBaseValueAsString(value); |
| if (parseStatus == NoError && baseValue()->value() < 0) |
| parseStatus = NegativeValueForbiddenError; |
| return parseStatus; |
| } |
| |
| private: |
| explicit SVGAnimatedPathLength(SVGPathElement* contextElement) |
| : SVGAnimatedNumber(contextElement, SVGNames::pathLengthAttr, SVGNumber::create()) |
| { |
| } |
| }; |
| |
| inline SVGPathElement::SVGPathElement(Document& document) |
| : SVGGeometryElement(SVGNames::pathTag, document) |
| , m_pathLength(SVGAnimatedPathLength::create(this)) |
| , m_path(SVGAnimatedPath::create(this, SVGNames::dAttr)) |
| { |
| addToPropertyMap(m_pathLength); |
| addToPropertyMap(m_path); |
| } |
| |
| DEFINE_TRACE(SVGPathElement) |
| { |
| visitor->trace(m_pathLength); |
| visitor->trace(m_path); |
| SVGGeometryElement::trace(visitor); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGPathElement) |
| |
| Path SVGPathElement::asPath() const |
| { |
| if (layoutObject()) { |
| const SVGComputedStyle& svgStyle = layoutObject()->styleRef().svgStyle(); |
| return svgStyle.d()->path(); |
| } |
| |
| return m_path->currentValue()->pathValue()->cachedPath()->path(); |
| } |
| |
| const SVGPathByteStream& SVGPathElement::pathByteStream() const |
| { |
| if (layoutObject()) { |
| const SVGComputedStyle& svgStyle = layoutObject()->styleRef().svgStyle(); |
| return svgStyle.d()->byteStream(); |
| } |
| |
| return m_path->currentValue()->byteStream(); |
| } |
| |
| float SVGPathElement::getTotalLength() |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| return SVGPathQuery(pathByteStream()).getTotalLength(); |
| } |
| |
| PassRefPtrWillBeRawPtr<SVGPointTearOff> SVGPathElement::getPointAtLength(float length) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| FloatPoint point = SVGPathQuery(pathByteStream()).getPointAtLength(length); |
| return SVGPointTearOff::create(SVGPoint::create(point), 0, PropertyIsNotAnimVal); |
| } |
| |
| unsigned SVGPathElement::getPathSegAtLength(float length) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| return SVGPathQuery(pathByteStream()).getPathSegIndexAtLength(length); |
| } |
| |
| bool SVGPathElement::isPresentationAttribute(const QualifiedName& attrName) const |
| { |
| if (attrName == SVGNames::dAttr) |
| return true; |
| return SVGGeometryElement::isPresentationAttribute(attrName); |
| } |
| |
| bool SVGPathElement::isPresentationAttributeWithSVGDOM(const QualifiedName& attrName) const |
| { |
| if (attrName == SVGNames::dAttr) |
| return true; |
| return SVGGeometryElement::isPresentationAttributeWithSVGDOM(attrName); |
| } |
| |
| void SVGPathElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (attrName == SVGNames::dAttr) { |
| SVGElement::InvalidationGuard invalidationGuard(this); |
| invalidateSVGPresentationAttributeStyle(); |
| setNeedsStyleRecalc(LocalStyleChange, |
| StyleChangeReasonForTracing::fromAttribute(attrName)); |
| |
| if (LayoutSVGShape* layoutPath = toLayoutSVGShape(this->layoutObject())) |
| layoutPath->setNeedsShapeUpdate(); |
| |
| invalidateMPathDependencies(); |
| if (layoutObject()) |
| markForLayoutAndParentResourceInvalidation(layoutObject()); |
| |
| return; |
| } |
| |
| if (attrName == SVGNames::pathLengthAttr) { |
| SVGElement::InvalidationGuard invalidationGuard(this); |
| if (layoutObject()) |
| markForLayoutAndParentResourceInvalidation(layoutObject()); |
| return; |
| } |
| |
| SVGGeometryElement::svgAttributeChanged(attrName); |
| } |
| |
| void SVGPathElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style) |
| { |
| SVGAnimatedPropertyBase* property = propertyFromAttribute(name); |
| if (property == m_path) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyD, m_path->currentValue()->pathValue()); |
| else |
| SVGGeometryElement::collectStyleForPresentationAttribute(name, value, style); |
| } |
| |
| void SVGPathElement::invalidateMPathDependencies() |
| { |
| // <mpath> can only reference <path> but this dependency is not handled in |
| // markForLayoutAndParentResourceInvalidation so we update any mpath dependencies manually. |
| if (SVGElementSet* dependencies = setOfIncomingReferences()) { |
| for (SVGElement* element : *dependencies) { |
| if (isSVGMPathElement(*element)) |
| toSVGMPathElement(element)->targetPathChanged(); |
| } |
| } |
| } |
| |
| Node::InsertionNotificationRequest SVGPathElement::insertedInto(ContainerNode* rootParent) |
| { |
| SVGGeometryElement::insertedInto(rootParent); |
| invalidateMPathDependencies(); |
| return InsertionDone; |
| } |
| |
| void SVGPathElement::removedFrom(ContainerNode* rootParent) |
| { |
| SVGGeometryElement::removedFrom(rootParent); |
| invalidateMPathDependencies(); |
| } |
| |
| } // namespace blink |