/*

    Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005, 2006, 2007 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)

#include "SVGPathElement.h"

#include "Attribute.h"

#include "RenderPath.h"

#include "RenderSVGResource.h"

#include "SVGNames.h"

#include "SVGPathSegArc.h"

#include "SVGPathSegClosePath.h"

#include "SVGPathSegCurvetoCubic.h"

#include "SVGPathSegCurvetoCubicSmooth.h"

#include "SVGPathSegCurvetoQuadratic.h"

#include "SVGPathSegCurvetoQuadraticSmooth.h"

#include "SVGPathSegLineto.h"

#include "SVGPathSegLinetoHorizontal.h"

#include "SVGPathSegLinetoVertical.h"

#include "SVGPathSegList.h"

#include "SVGPathSegListBuilder.h"

#include "SVGPathSegMoveto.h"

#include "SVGSVGElement.h"

namespace WebCore {

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

    : SVGStyledTransformableElement(tagName, doc)

    , SVGTests()

    , SVGLangSpace()

    , SVGExternalResourcesRequired()

{

}

SVGPathElement::~SVGPathElement()

{

}

float SVGPathElement::getTotalLength()

{

    // FIXME: this may wish to use the pathSegList instead of the pathdata if that's cheaper to build (or cached)

    return toPathData().length();

}

FloatPoint SVGPathElement::getPointAtLength(float length)

{

    // FIXME: this may wish to use the pathSegList instead of the pathdata if that's cheaper to build (or cached)

    bool ok = false;

    return toPathData().pointAtLength(length, ok);

}

unsigned long SVGPathElement::getPathSegAtLength(float length, ExceptionCode& ec)

{

    return pathSegList()->getPathSegAtLength(length, ec);

}

PassRefPtr<SVGPathSegClosePath> SVGPathElement::createSVGPathSegClosePath()

{

    return SVGPathSegClosePath::create();

}

PassRefPtr<SVGPathSegMovetoAbs> SVGPathElement::createSVGPathSegMovetoAbs(float x, float y)

{

    return SVGPathSegMovetoAbs::create(x, y);

}

PassRefPtr<SVGPathSegMovetoRel> SVGPathElement::createSVGPathSegMovetoRel(float x, float y)

{

    return SVGPathSegMovetoRel::create(x, y);

}

PassRefPtr<SVGPathSegLinetoAbs> SVGPathElement::createSVGPathSegLinetoAbs(float x, float y)

{

    return SVGPathSegLinetoAbs::create(x, y);

}

PassRefPtr<SVGPathSegLinetoRel> SVGPathElement::createSVGPathSegLinetoRel(float x, float y)

{

    return SVGPathSegLinetoRel::create(x, y);

}

PassRefPtr<SVGPathSegCurvetoCubicAbs> SVGPathElement::createSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2)

{

    return SVGPathSegCurvetoCubicAbs::create(x, y, x1, y1, x2, y2);

}

PassRefPtr<SVGPathSegCurvetoCubicRel> SVGPathElement::createSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2)

{

    return SVGPathSegCurvetoCubicRel::create(x, y, x1, y1, x2, y2);

}

PassRefPtr<SVGPathSegCurvetoQuadraticAbs> SVGPathElement::createSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1)

{

    return SVGPathSegCurvetoQuadraticAbs::create(x, y, x1, y1);

}

PassRefPtr<SVGPathSegCurvetoQuadraticRel> SVGPathElement::createSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1)

{

    return SVGPathSegCurvetoQuadraticRel::create(x, y, x1, y1);

}

PassRefPtr<SVGPathSegArcAbs> SVGPathElement::createSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)

{

    return SVGPathSegArcAbs::create(x, y, r1, r2, angle, largeArcFlag, sweepFlag);

}

PassRefPtr<SVGPathSegArcRel> SVGPathElement::createSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)

{

    return SVGPathSegArcRel::create(x, y, r1, r2, angle, largeArcFlag, sweepFlag);

}

PassRefPtr<SVGPathSegLinetoHorizontalAbs> SVGPathElement::createSVGPathSegLinetoHorizontalAbs(float x)

{

    return SVGPathSegLinetoHorizontalAbs::create(x);

}

PassRefPtr<SVGPathSegLinetoHorizontalRel> SVGPathElement::createSVGPathSegLinetoHorizontalRel(float x)

{

    return SVGPathSegLinetoHorizontalRel::create(x);

}

PassRefPtr<SVGPathSegLinetoVerticalAbs> SVGPathElement::createSVGPathSegLinetoVerticalAbs(float y)

{

    return SVGPathSegLinetoVerticalAbs::create(y);

}

PassRefPtr<SVGPathSegLinetoVerticalRel> SVGPathElement::createSVGPathSegLinetoVerticalRel(float y)

{

    return SVGPathSegLinetoVerticalRel::create(y);

}

PassRefPtr<SVGPathSegCurvetoCubicSmoothAbs> SVGPathElement::createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2)

{

    return SVGPathSegCurvetoCubicSmoothAbs::create(x, y, x2, y2);

}

PassRefPtr<SVGPathSegCurvetoCubicSmoothRel> SVGPathElement::createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2)

{

    return SVGPathSegCurvetoCubicSmoothRel::create(x, y, x2, y2);

}

PassRefPtr<SVGPathSegCurvetoQuadraticSmoothAbs> SVGPathElement::createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y)

{

    return SVGPathSegCurvetoQuadraticSmoothAbs::create(x, y);

}

PassRefPtr<SVGPathSegCurvetoQuadraticSmoothRel> SVGPathElement::createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y)

{

    return SVGPathSegCurvetoQuadraticSmoothRel::create(x, y);

}

void SVGPathElement::parseMappedAttribute(Attribute* attr)

{

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

        ExceptionCode ec;

        pathSegList()->clear(ec);

        SVGPathSegListBuilder parser(pathSegList());

        if (!parser.build(attr->value(), NormalizedParsing))

            document()->accessSVGExtensions()->reportError("Problem parsing d=\"" + attr->value() + "\"");

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

        setPathLengthBaseValue(attr->value().toFloat());

        if (pathLengthBaseValue() < 0.0f)

            document()->accessSVGExtensions()->reportError("A negative value for path attribute <pathLength> is not allowed");

    } else {

        if (SVGTests::parseMappedAttribute(attr))

            return;

        if (SVGLangSpace::parseMappedAttribute(attr))

            return;

        if (SVGExternalResourcesRequired::parseMappedAttribute(attr))

            return;

        SVGStyledTransformableElement::parseMappedAttribute(attr);

    }

}

void SVGPathElement::svgAttributeChanged(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::svgAttributeChanged(attrName);

    RenderPath* renderer = static_cast<RenderPath*>(this->renderer());

    if (!renderer)

        return;

    if (attrName == SVGNames::dAttr) {

        renderer->setNeedsPathUpdate();

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

        return;

    }

    if (SVGStyledTransformableElement::isKnownAttribute(attrName)) {

        renderer->setNeedsTransformUpdate();

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

        return;

    }

    if (attrName == SVGNames::pathLengthAttr

        || SVGTests::isKnownAttribute(attrName)

        || SVGLangSpace::isKnownAttribute(attrName)

        || SVGExternalResourcesRequired::isKnownAttribute(attrName))

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

}

void SVGPathElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::synchronizeProperty(attrName);

    if (attrName == anyQName()) {

        synchronizePathLength();

        synchronizeExternalResourcesRequired();

        return;

    }

    if (attrName == SVGNames::pathLengthAttr)

        synchronizePathLength();

    else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))

        synchronizeExternalResourcesRequired();

}

SVGPathSegList* SVGPathElement::pathSegList() const

{

    if (!m_pathSegList)

        m_pathSegList = SVGPathSegList::create(SVGNames::dAttr);

    return m_pathSegList.get();

}

SVGPathSegList* SVGPathElement::normalizedPathSegList() const

{

    // TODO

    return 0;

}

SVGPathSegList* SVGPathElement::animatedPathSegList() const

{

    // TODO

    return 0;

}

SVGPathSegList* SVGPathElement::animatedNormalizedPathSegList() const

{

    // TODO

    return 0;

}

Path SVGPathElement::toPathData() const

{

    return pathSegList()->toPathData();

}

}

#endif // ENABLE(SVG)