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