/*

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

                  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 "SVGComponentTransferFunctionElement.h"

#include "Attribute.h"

#include "SVGFEComponentTransferElement.h"

#include "SVGNames.h"

#include "SVGNumberList.h"

namespace WebCore {

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

    : SVGElement(tagName, doc)

    , m_type(FECOMPONENTTRANSFER_TYPE_UNKNOWN)

    , m_tableValues(SVGNumberList::create(SVGNames::tableValuesAttr))

    , m_slope(1.0f)

    , m_amplitude(1.0f)

    , m_exponent(1.0f)

{

}

SVGComponentTransferFunctionElement::~SVGComponentTransferFunctionElement()

{

}

void SVGComponentTransferFunctionElement::parseMappedAttribute(Attribute* attr)

{

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

    if (attr->name() == SVGNames::typeAttr) {

        if (value == "identity")

            setTypeBaseValue(FECOMPONENTTRANSFER_TYPE_IDENTITY);

        else if (value == "table")

            setTypeBaseValue(FECOMPONENTTRANSFER_TYPE_TABLE);

        else if (value == "discrete")

            setTypeBaseValue(FECOMPONENTTRANSFER_TYPE_DISCRETE);

        else if (value == "linear")

            setTypeBaseValue(FECOMPONENTTRANSFER_TYPE_LINEAR);

        else if (value == "gamma")

            setTypeBaseValue(FECOMPONENTTRANSFER_TYPE_GAMMA);

    }

    else if (attr->name() == SVGNames::tableValuesAttr)

        tableValuesBaseValue()->parse(value);

    else if (attr->name() == SVGNames::slopeAttr)

        setSlopeBaseValue(value.toFloat());

    else if (attr->name() == SVGNames::interceptAttr)

        setInterceptBaseValue(value.toFloat());

    else if (attr->name() == SVGNames::amplitudeAttr)

        setAmplitudeBaseValue(value.toFloat());

    else if (attr->name() == SVGNames::exponentAttr)

        setExponentBaseValue(value.toFloat());

    else if (attr->name() == SVGNames::offsetAttr)

        setOffsetBaseValue(value.toFloat());

    else

        SVGElement::parseMappedAttribute(attr);

}

void SVGComponentTransferFunctionElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGElement::synchronizeProperty(attrName);

    if (attrName == anyQName()) {

        synchronizeType();

        synchronizeTableValues();

        synchronizeSlope();

        synchronizeIntercept();

        synchronizeAmplitude();

        synchronizeExponent();

        synchronizeOffset();

        return;

    }

    if (attrName == SVGNames::typeAttr)

        synchronizeType();

    else if (attrName == SVGNames::tableValuesAttr)

        synchronizeTableValues();

    else if (attrName == SVGNames::slopeAttr)

        synchronizeSlope();

    else if (attrName == SVGNames::interceptAttr)

        synchronizeIntercept();

    else if (attrName == SVGNames::amplitudeAttr)

        synchronizeAmplitude();

    else if (attrName == SVGNames::exponentAttr)

        synchronizeExponent();

    else if (attrName == SVGNames::offsetAttr)

        synchronizeOffset();

}

ComponentTransferFunction SVGComponentTransferFunctionElement::transferFunction() const

{

    ComponentTransferFunction func;

    func.type = (ComponentTransferType) type();

    func.slope = slope();

    func.intercept = intercept();

    func.amplitude = amplitude();

    func.exponent = exponent();

    func.offset = offset();

    SVGNumberList* numbers = tableValues();

    ExceptionCode ec = 0;

    unsigned int nr = numbers->numberOfItems();

    for (unsigned int i = 0; i < nr; i++)

        func.tableValues.append(numbers->getItem(i, ec));

    return func;

}

}

#endif // ENABLE(SVG)