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/*
* Copyright (C) Research In Motion Limited 2011. 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 "core/svg/SVGFEDropShadowElement.h"
#include "core/SVGNames.h"
#include "core/rendering/style/RenderStyle.h"
#include "core/rendering/style/SVGRenderStyle.h"
#include "core/svg/SVGParserUtilities.h"
#include "core/svg/graphics/filters/SVGFilterBuilder.h"
namespace WebCore {
inline SVGFEDropShadowElement::SVGFEDropShadowElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(SVGNames::feDropShadowTag, document)
, m_dx(SVGAnimatedNumber::create(this, SVGNames::dxAttr, SVGNumber::create(2)))
, m_dy(SVGAnimatedNumber::create(this, SVGNames::dyAttr, SVGNumber::create(2)))
, m_stdDeviation(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::stdDeviationAttr, 2, 2))
, m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
{
ScriptWrappable::init(this);
addToPropertyMap(m_dx);
addToPropertyMap(m_dy);
addToPropertyMap(m_stdDeviation);
addToPropertyMap(m_in1);
}
DEFINE_NODE_FACTORY(SVGFEDropShadowElement)
void SVGFEDropShadowElement::setStdDeviation(float x, float y)
{
stdDeviationX()->baseValue()->setValue(x);
stdDeviationY()->baseValue()->setValue(y);
invalidate();
}
bool SVGFEDropShadowElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
supportedAttributes.add(SVGNames::inAttr);
supportedAttributes.add(SVGNames::dxAttr);
supportedAttributes.add(SVGNames::dyAttr);
supportedAttributes.add(SVGNames::stdDeviationAttr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGFEDropShadowElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
return;
}
SVGParsingError parseError = NoError;
if (name == SVGNames::inAttr)
m_in1->setBaseValueAsString(value, parseError);
else if (name == SVGNames::dxAttr)
m_dx->setBaseValueAsString(value, parseError);
else if (name == SVGNames::dyAttr)
m_dy->setBaseValueAsString(value, parseError);
else if (name == SVGNames::stdDeviationAttr)
m_stdDeviation->setBaseValueAsString(value, parseError);
else
ASSERT_NOT_REACHED();
reportAttributeParsingError(parseError, name, value);
}
void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::inAttr
|| attrName == SVGNames::stdDeviationAttr
|| attrName == SVGNames::dxAttr
|| attrName == SVGNames::dyAttr) {
invalidate();
return;
}
ASSERT_NOT_REACHED();
}
PassRefPtr<FilterEffect> SVGFEDropShadowElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
{
RenderObject* renderer = this->renderer();
if (!renderer)
return nullptr;
if (stdDeviationX()->currentValue()->value() < 0 || stdDeviationY()->currentValue()->value() < 0)
return nullptr;
ASSERT(renderer->style());
const SVGRenderStyle* svgStyle = renderer->style()->svgStyle();
Color color = svgStyle->floodColor();
float opacity = svgStyle->floodOpacity();
FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
if (!input1)
return nullptr;
RefPtr<FilterEffect> effect = FEDropShadow::create(filter, stdDeviationX()->currentValue()->value(), stdDeviationY()->currentValue()->value(), m_dx->currentValue()->value(), m_dy->currentValue()->value(), color, opacity);
effect->inputEffects().append(input1);
return effect.release();
}
}
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