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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) 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
* Copyright (C) Research In Motion Limited 2010. 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"
#if ENABLE(SVG)
#include "SVGRadialGradientElement.h"
#include "Attribute.h"
#include "FloatConversion.h"
#include "FloatPoint.h"
#include "RadialGradientAttributes.h"
#include "RenderSVGResourceRadialGradient.h"
#include "SVGElementInstance.h"
#include "SVGNames.h"
#include "SVGStopElement.h"
#include "SVGTransform.h"
#include "SVGTransformList.h"
#include "SVGUnitTypes.h"
namespace WebCore {
// Animated property definitions
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::cxAttr, Cx, cx)
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::cyAttr, Cy, cy)
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::rAttr, R, r)
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::fxAttr, Fx, fx)
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::fyAttr, Fy, fy)
DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::frAttr, Fr, fr)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGRadialGradientElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(cx)
REGISTER_LOCAL_ANIMATED_PROPERTY(cy)
REGISTER_LOCAL_ANIMATED_PROPERTY(r)
REGISTER_LOCAL_ANIMATED_PROPERTY(fx)
REGISTER_LOCAL_ANIMATED_PROPERTY(fy)
REGISTER_LOCAL_ANIMATED_PROPERTY(fr)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGradientElement)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGRadialGradientElement::SVGRadialGradientElement(const QualifiedName& tagName, Document* document)
: SVGGradientElement(tagName, document)
, m_cx(LengthModeWidth, "50%")
, m_cy(LengthModeHeight, "50%")
, m_r(LengthModeOther, "50%")
, m_fx(LengthModeWidth)
, m_fy(LengthModeHeight)
, m_fr(LengthModeOther, "0%")
{
// Spec: If the cx/cy/r/fr attribute is not specified, the effect is as if a value of "50%" were specified.
ASSERT(hasTagName(SVGNames::radialGradientTag));
registerAnimatedPropertiesForSVGRadialGradientElement();
}
PassRefPtr<SVGRadialGradientElement> SVGRadialGradientElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGRadialGradientElement(tagName, document));
}
bool SVGRadialGradientElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
supportedAttributes.add(SVGNames::cxAttr);
supportedAttributes.add(SVGNames::cyAttr);
supportedAttributes.add(SVGNames::fxAttr);
supportedAttributes.add(SVGNames::fyAttr);
supportedAttributes.add(SVGNames::rAttr);
supportedAttributes.add(SVGNames::frAttr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGRadialGradientElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
SVGParsingError parseError = NoError;
if (!isSupportedAttribute(name))
SVGGradientElement::parseAttribute(name, value);
else if (name == SVGNames::cxAttr)
setCxBaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
else if (name == SVGNames::cyAttr)
setCyBaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
else if (name == SVGNames::rAttr)
setRBaseValue(SVGLength::construct(LengthModeOther, value, parseError, ForbidNegativeLengths));
else if (name == SVGNames::fxAttr)
setFxBaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
else if (name == SVGNames::fyAttr)
setFyBaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
else if (name == SVGNames::frAttr)
setFrBaseValue(SVGLength::construct(LengthModeOther, value, parseError, ForbidNegativeLengths));
else
ASSERT_NOT_REACHED();
reportAttributeParsingError(parseError, name, value);
}
void SVGRadialGradientElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGGradientElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
updateRelativeLengthsInformation();
if (RenderObject* object = renderer())
object->setNeedsLayout(true);
}
RenderObject* SVGRadialGradientElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderSVGResourceRadialGradient(this);
}
bool SVGRadialGradientElement::collectGradientAttributes(RadialGradientAttributes& attributes)
{
HashSet<SVGGradientElement*> processedGradients;
bool isRadial = true;
SVGGradientElement* current = this;
while (current) {
if (!current->renderer())
return false;
if (!attributes.hasSpreadMethod() && current->hasAttribute(SVGNames::spreadMethodAttr))
attributes.setSpreadMethod(current->spreadMethod());
if (!attributes.hasGradientUnits() && current->hasAttribute(SVGNames::gradientUnitsAttr))
attributes.setGradientUnits(current->gradientUnits());
if (!attributes.hasGradientTransform() && current->hasAttribute(SVGNames::gradientTransformAttr)) {
AffineTransform transform;
current->gradientTransform().concatenate(transform);
attributes.setGradientTransform(transform);
}
if (!attributes.hasStops()) {
const Vector<Gradient::ColorStop>& stops(current->buildStops());
if (!stops.isEmpty())
attributes.setStops(stops);
}
if (isRadial) {
SVGRadialGradientElement* radial = static_cast<SVGRadialGradientElement*>(current);
if (!attributes.hasCx() && current->hasAttribute(SVGNames::cxAttr))
attributes.setCx(radial->cx());
if (!attributes.hasCy() && current->hasAttribute(SVGNames::cyAttr))
attributes.setCy(radial->cy());
if (!attributes.hasR() && current->hasAttribute(SVGNames::rAttr))
attributes.setR(radial->r());
if (!attributes.hasFx() && current->hasAttribute(SVGNames::fxAttr))
attributes.setFx(radial->fx());
if (!attributes.hasFy() && current->hasAttribute(SVGNames::fyAttr))
attributes.setFy(radial->fy());
if (!attributes.hasFr() && current->hasAttribute(SVGNames::frAttr))
attributes.setFr(radial->fr());
}
processedGradients.add(current);
// Respect xlink:href, take attributes from referenced element
Node* refNode = SVGURIReference::targetElementFromIRIString(current->href(), document());
if (refNode && (refNode->hasTagName(SVGNames::radialGradientTag) || refNode->hasTagName(SVGNames::linearGradientTag))) {
current = toSVGGradientElement(refNode);
// Cycle detection
if (processedGradients.contains(current)) {
current = 0;
break;
}
isRadial = current->hasTagName(SVGNames::radialGradientTag);
} else
current = 0;
}
// Handle default values for fx/fy
if (!attributes.hasFx())
attributes.setFx(attributes.cx());
if (!attributes.hasFy())
attributes.setFy(attributes.cy());
return true;
}
bool SVGRadialGradientElement::selfHasRelativeLengths() const
{
return cx().isRelative()
|| cy().isRelative()
|| r().isRelative()
|| fx().isRelative()
|| fy().isRelative()
|| fr().isRelative();
}
}
#endif // ENABLE(SVG)
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