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/*
* Copyright (C) 2006 Oliver Hunt <oliver@nerget.com>
*
* 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) && ENABLE(FILTERS)
#include "SVGFEDisplacementMapElement.h"
#include "Attribute.h"
namespace WebCore {
inline SVGFEDisplacementMapElement::SVGFEDisplacementMapElement(const QualifiedName& tagName, Document* document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
, m_xChannelSelector(CHANNEL_A)
, m_yChannelSelector(CHANNEL_A)
{
}
PassRefPtr<SVGFEDisplacementMapElement> SVGFEDisplacementMapElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGFEDisplacementMapElement(tagName, document));
}
ChannelSelectorType SVGFEDisplacementMapElement::stringToChannel(const String& key)
{
if (key == "R")
return CHANNEL_R;
else if (key == "G")
return CHANNEL_G;
else if (key == "B")
return CHANNEL_B;
else if (key == "A")
return CHANNEL_A;
return CHANNEL_UNKNOWN;
}
void SVGFEDisplacementMapElement::parseMappedAttribute(Attribute* attr)
{
const String& value = attr->value();
if (attr->name() == SVGNames::xChannelSelectorAttr)
setXChannelSelectorBaseValue(stringToChannel(value));
else if (attr->name() == SVGNames::yChannelSelectorAttr)
setYChannelSelectorBaseValue(stringToChannel(value));
else if (attr->name() == SVGNames::inAttr)
setIn1BaseValue(value);
else if (attr->name() == SVGNames::in2Attr)
setIn2BaseValue(value);
else if (attr->name() == SVGNames::scaleAttr)
setScaleBaseValue(value.toFloat());
else
SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
}
void SVGFEDisplacementMapElement::synchronizeProperty(const QualifiedName& attrName)
{
SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
if (attrName == anyQName()) {
synchronizeXChannelSelector();
synchronizeYChannelSelector();
synchronizeIn1();
synchronizeIn2();
synchronizeScale();
return;
}
if (attrName == SVGNames::xChannelSelectorAttr)
synchronizeXChannelSelector();
else if (attrName == SVGNames::yChannelSelectorAttr)
synchronizeYChannelSelector();
else if (attrName == SVGNames::inAttr)
synchronizeIn1();
else if (attrName == SVGNames::in2Attr)
synchronizeIn2();
else if (attrName == SVGNames::scaleAttr)
synchronizeScale();
}
PassRefPtr<FilterEffect> SVGFEDisplacementMapElement::build(SVGFilterBuilder* filterBuilder)
{
FilterEffect* input1 = filterBuilder->getEffectById(in1());
FilterEffect* input2 = filterBuilder->getEffectById(in2());
if (!input1 || !input2)
return 0;
RefPtr<FilterEffect> effect = FEDisplacementMap::create(static_cast<ChannelSelectorType>(xChannelSelector()),
static_cast<ChannelSelectorType>(yChannelSelector()), scale());
FilterEffectVector& inputEffects = effect->inputEffects();
inputEffects.reserveCapacity(2);
inputEffects.append(input1);
inputEffects.append(input2);
return effect.release();
}
}
#endif // ENABLE(SVG)
// vim:ts=4:noet
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