/*

    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005 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 "SVGFEComponentTransferElement.h"

#include "Attr.h"

#include "SVGFEFuncAElement.h"

#include "SVGFEFuncBElement.h"

#include "SVGFEFuncGElement.h"

#include "SVGFEFuncRElement.h"

#include "SVGNames.h"

#include "SVGRenderStyle.h"

namespace WebCore {

SVGFEComponentTransferElement::SVGFEComponentTransferElement(const QualifiedName& tagName, Document* doc)

    : SVGFilterPrimitiveStandardAttributes(tagName, doc)

{

}

SVGFEComponentTransferElement::~SVGFEComponentTransferElement()

{

}

void SVGFEComponentTransferElement::parseMappedAttribute(Attribute* attr)

{

    const String& value = attr->value();

    if (attr->name() == SVGNames::inAttr)

        setIn1BaseValue(value);

    else

        SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);

}

void SVGFEComponentTransferElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);

    if (attrName == anyQName() || attrName == SVGNames::inAttr)

        synchronizeIn1();

}

PassRefPtr<FilterEffect> SVGFEComponentTransferElement::build(SVGFilterBuilder* filterBuilder)

{

    FilterEffect* input1 = filterBuilder->getEffectById(in1());

    if (!input1)

        return 0;

    ComponentTransferFunction red;

    ComponentTransferFunction green;

    ComponentTransferFunction blue;

    ComponentTransferFunction alpha;

    for (Node* n = firstChild(); n != 0; n = n->nextSibling()) {

        if (n->hasTagName(SVGNames::feFuncRTag))

            red = static_cast<SVGFEFuncRElement*>(n)->transferFunction();

        else if (n->hasTagName(SVGNames::feFuncGTag))

            green = static_cast<SVGFEFuncGElement*>(n)->transferFunction();

        else if (n->hasTagName(SVGNames::feFuncBTag))

           blue = static_cast<SVGFEFuncBElement*>(n)->transferFunction();

        else if (n->hasTagName(SVGNames::feFuncATag))

            alpha = static_cast<SVGFEFuncAElement*>(n)->transferFunction();

    }

    return FEComponentTransfer::create(input1, red, green, blue, alpha);

}

}

#endif