WebCore/svg/SVGFEBlendElement.cpp

/*
 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
 *
 * 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 "SVGFEBlendElement.h"

#include "Attribute.h"

namespace WebCore {

SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document* doc)
    : SVGFilterPrimitiveStandardAttributes(tagName, doc)
    , m_mode(FEBLEND_MODE_NORMAL)
{
}

SVGFEBlendElement::~SVGFEBlendElement()
{
}

void SVGFEBlendElement::parseMappedAttribute(Attribute* attr)
{
    const String& value = attr->value();
    if (attr->name() == SVGNames::modeAttr) {
        if (value == "normal")
            setModeBaseValue(FEBLEND_MODE_NORMAL);
        else if (value == "multiply")
            setModeBaseValue(FEBLEND_MODE_MULTIPLY);
        else if (value == "screen")
            setModeBaseValue(FEBLEND_MODE_SCREEN);
        else if (value == "darken")
            setModeBaseValue(FEBLEND_MODE_DARKEN);
        else if (value == "lighten")
            setModeBaseValue(FEBLEND_MODE_LIGHTEN);
    } else if (attr->name() == SVGNames::inAttr)
        setIn1BaseValue(value);
    else if (attr->name() == SVGNames::in2Attr)
        setIn2BaseValue(value);
    else
        SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
}

void SVGFEBlendElement::synchronizeProperty(const QualifiedName& attrName)
{
    SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);

    if (attrName == anyQName()) {
        synchronizeMode();
        synchronizeIn1();
        synchronizeIn2();
        return;
    }

    if (attrName == SVGNames::modeAttr)
        synchronizeMode();
    else if (attrName == SVGNames::inAttr)
        synchronizeIn1();
    else if (attrName == SVGNames::in2Attr)
        synchronizeIn2();
}

PassRefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder)
{
    FilterEffect* input1 = filterBuilder->getEffectById(in1());
    FilterEffect* input2 = filterBuilder->getEffectById(in2());

    if (!input1 || !input2)
        return 0;

    return FEBlend::create(input1, input2, static_cast<BlendModeType>(mode()));
}

}

#endif // ENABLE(SVG)

// vim:ts=4:noet