/*

    Copyright (C) 2004, 2005, 2008 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)

#include "SVGStyledTransformableElement.h"

#include "AffineTransform.h"

#include "Attr.h"

#include "RenderPath.h"

#include "SVGDocument.h"

#include "SVGStyledElement.h"

#include "SVGTransformList.h"

namespace WebCore {

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

    : SVGStyledLocatableElement(tagName, doc)

    , SVGTransformable()

    , m_transform(SVGTransformList::create(SVGNames::transformAttr))

{

}

SVGStyledTransformableElement::~SVGStyledTransformableElement()

{

}

AffineTransform SVGStyledTransformableElement::getCTM() const

{

    return SVGLocatable::computeCTM(this, SVGLocatable::NearestViewportScope);

}

AffineTransform SVGStyledTransformableElement::getScreenCTM() const

{

    return SVGLocatable::computeCTM(this, SVGLocatable::ScreenScope);

}

AffineTransform SVGStyledTransformableElement::animatedLocalTransform() const

{

    return m_supplementalTransform ? transform()->concatenate().matrix() * *m_supplementalTransform : transform()->concatenate().matrix();

}

AffineTransform* SVGStyledTransformableElement::supplementalTransform()

{

    if (!m_supplementalTransform)

        m_supplementalTransform.set(new AffineTransform());

    return m_supplementalTransform.get();

}

void SVGStyledTransformableElement::parseMappedAttribute(Attribute* attr)

{

    if (SVGTransformable::isKnownAttribute(attr->name())) {

        SVGTransformList* localTransforms = transformBaseValue();

        if (!SVGTransformable::parseTransformAttribute(localTransforms, attr->value())) {

            ExceptionCode ec = 0;

            localTransforms->clear(ec);

        }

    } else 

        SVGStyledLocatableElement::parseMappedAttribute(attr);

}

void SVGStyledTransformableElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGStyledLocatableElement::synchronizeProperty(attrName);

    if (attrName == anyQName() || SVGTransformable::isKnownAttribute(attrName))

        synchronizeTransform();

}

bool SVGStyledTransformableElement::isKnownAttribute(const QualifiedName& attrName)

{

    return SVGTransformable::isKnownAttribute(attrName) ||

           SVGStyledLocatableElement::isKnownAttribute(attrName);

}

SVGElement* SVGStyledTransformableElement::nearestViewportElement() const

{

    return SVGTransformable::nearestViewportElement(this);

}

SVGElement* SVGStyledTransformableElement::farthestViewportElement() const

{

    return SVGTransformable::farthestViewportElement(this);

}

FloatRect SVGStyledTransformableElement::getBBox() const

{

    return SVGTransformable::getBBox(this);

}

RenderObject* SVGStyledTransformableElement::createRenderer(RenderArena* arena, RenderStyle*)

{

    // By default, any subclass is expected to do path-based drawing

    return new (arena) RenderPath(this);

}

Path SVGStyledTransformableElement::toClipPath() const

{

    Path pathData = toPathData();

    // FIXME: How do we know the element has done a layout?

    pathData.transform(animatedLocalTransform());

    return pathData;

}

}

#endif // ENABLE(SVG)