124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
/*
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* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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* Copyright (C) 2018 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 "SVGGeometryElement.h"
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#include "DOMPoint.h"
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#include "RenderSVGResource.h"
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#include "RenderSVGShape.h"
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#include "SVGDocumentExtensions.h"
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#include "SVGPathUtilities.h"
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#include "SVGPoint.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(SVGGeometryElement);
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SVGGeometryElement::SVGGeometryElement(const QualifiedName& tagName, Document& document)
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: SVGGraphicsElement(tagName, document)
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{
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::pathLengthAttr, &SVGGeometryElement::m_pathLength>();
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});
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}
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float SVGGeometryElement::getTotalLength() const
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{
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document().updateLayoutIgnorePendingStylesheets();
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auto* renderer = downcast<RenderSVGShape>(this->renderer());
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if (!renderer)
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return 0;
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return renderer->getTotalLength();
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}
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ExceptionOr<Ref<SVGPoint>> SVGGeometryElement::getPointAtLength(float distance) const
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{
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document().updateLayoutIgnorePendingStylesheets();
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auto* renderer = downcast<RenderSVGShape>(this->renderer());
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// Spec: If current element is a non-rendered element, throw an InvalidStateError.
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if (!renderer)
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return Exception { InvalidStateError };
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// Spec: Clamp distance to [0, length].
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distance = clampTo<float>(distance, 0, getTotalLength());
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// Spec: Return a newly created, detached SVGPoint object.
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return SVGPoint::create(renderer->getPointAtLength(distance));
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}
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bool SVGGeometryElement::isPointInFill(DOMPointInit&& pointInit)
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{
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document().updateLayoutIgnorePendingStylesheets();
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auto* renderer = downcast<RenderSVGShape>(this->renderer());
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if (!renderer)
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return false;
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FloatPoint point {static_cast<float>(pointInit.x), static_cast<float>(pointInit.y)};
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return renderer->isPointInFill(point);
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}
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bool SVGGeometryElement::isPointInStroke(DOMPointInit&& pointInit)
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{
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document().updateLayoutIgnorePendingStylesheets();
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auto* renderer = downcast<RenderSVGShape>(this->renderer());
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if (!renderer)
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return false;
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FloatPoint point {static_cast<float>(pointInit.x), static_cast<float>(pointInit.y)};
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return renderer->isPointInStroke(point);
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}
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void SVGGeometryElement::parseAttribute(const QualifiedName& name, const AtomString& value)
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{
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if (name == SVGNames::pathLengthAttr) {
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m_pathLength->setBaseValInternal(value.toFloat());
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if (m_pathLength->baseVal() < 0)
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document().accessSVGExtensions().reportError("A negative value for path attribute <pathLength> is not allowed");
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return;
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}
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SVGGraphicsElement::parseAttribute(name, value);
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}
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void SVGGeometryElement::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (attrName == SVGNames::pathLengthAttr) {
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InstanceInvalidationGuard guard(*this);
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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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}
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