/*

    Copyright (C) 2009 Dirk Schulze <krit@webkit.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 "SVGFEMorphologyElement.h"

#include "Attribute.h"

#include "SVGNames.h"

#include "SVGParserUtilities.h"

namespace WebCore {

char SVGRadiusXAttrIdentifier[] = "SVGRadiusXAttr";

char SVGRadiusYAttrIdentifier[] = "SVGRadiusYAttr";

SVGFEMorphologyElement::SVGFEMorphologyElement(const QualifiedName& tagName, Document* document)

    : SVGFilterPrimitiveStandardAttributes(tagName, document)

    , m__operator(FEMORPHOLOGY_OPERATOR_ERODE)

{

}

SVGFEMorphologyElement::~SVGFEMorphologyElement()

{

}

void SVGFEMorphologyElement::setRadius(float, float)

{

    // FIXME: Needs an implementation.

}

void SVGFEMorphologyElement::parseMappedAttribute(Attribute* attr)

{

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

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

        if (value == "erode")

            set_operatorBaseValue(FEMORPHOLOGY_OPERATOR_ERODE);

        else if (value == "dilate")

            set_operatorBaseValue(FEMORPHOLOGY_OPERATOR_DILATE);

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

        setIn1BaseValue(value);

    else if (attr->name() == SVGNames::radiusAttr) {

        float x, y;

        if (parseNumberOptionalNumber(value, x, y)) {

            setRadiusXBaseValue(x);

            setRadiusYBaseValue(y);

        }

    } else

        SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);

}

void SVGFEMorphologyElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);

    if (attrName == anyQName()) {

        synchronize_operator();

        synchronizeIn1();

        synchronizeRadiusX();

        synchronizeRadiusY();

        return;

    }

    if (attrName == SVGNames::operatorAttr)

        synchronize_operator();

    else if (attrName == SVGNames::inAttr)

        synchronizeIn1();

    else if (attrName == SVGNames::radiusAttr) {

        synchronizeRadiusX();

        synchronizeRadiusY();

    }

}

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

{

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

    float xRadius = radiusX();

    float yRadius = radiusY();

    if (!input1)

        return 0;

    if (xRadius < 0 || yRadius < 0)

        return 0;

    return FEMorphology::create(input1, static_cast<MorphologyOperatorType>(_operator()), xRadius, yRadius);

}

} //namespace WebCore

#endif // ENABLE(SVG)