/*
    Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
                  2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>

    This file is part of the KDE project

    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 "wtf/Platform.h"

#if ENABLE(SVG)
#include "SVGTextElement.h"

#include "AffineTransform.h"
#include "FloatRect.h"
#include "RenderSVGText.h"
#include "SVGLengthList.h"
#include "SVGRenderStyle.h"
#include "SVGTSpanElement.h"
#include "SVGTransformList.h"

namespace WebCore
{

SVGTextElement::SVGTextElement(const QualifiedName &tagName, Document *doc)
    : SVGTextPositioningElement(tagName, doc)
    , SVGTransformable()
    , m_transform(SVGTransformList::create(SVGNames::transformAttr))
{
}

SVGTextElement::~SVGTextElement()
{
}

ANIMATED_PROPERTY_DEFINITIONS(SVGTextElement, SVGTransformList *, TransformList, transformList, Transform, transform, SVGNames::transformAttr, m_transform.get())

void SVGTextElement::parseMappedAttribute(MappedAttribute *attr)
{
    if (attr->name() == SVGNames::transformAttr) {
        SVGTransformList *localTransforms = transformBaseValue();

        ExceptionCode ec = 0;
        localTransforms->clear(ec);

        if (!SVGTransformable::parseTransformAttribute(localTransforms, attr->value())) {
            localTransforms->clear(ec);
        } else {
            setTransformBaseValue(localTransforms);
            if (renderer()) {
                renderer()->setNeedsLayout(true);    // should be in setTransformBaseValue
            }
        }
    } else {
        SVGTextPositioningElement::parseMappedAttribute(attr);
    }
}

SVGElement *SVGTextElement::nearestViewportElement() const
{
    return SVGTransformable::nearestViewportElement(this);
}

SVGElement *SVGTextElement::farthestViewportElement() const
{
    return SVGTransformable::farthestViewportElement(this);
}

FloatRect SVGTextElement::getBBox() const
{
    return SVGTransformable::getBBox(this);
}

AffineTransform SVGTextElement::getScreenCTM() const
{
    return SVGTransformable::getScreenCTM(this);
}

AffineTransform SVGTextElement::getCTM() const
{
    return SVGTransformable::getCTM(this);
}

AffineTransform SVGTextElement::animatedLocalTransform() const
{
    return m_supplementalTransform ? transform()->concatenate().matrix() **m_supplementalTransform : transform()->concatenate().matrix();
}

AffineTransform *SVGTextElement::supplementalTransform()
{
    if (!m_supplementalTransform) {
        m_supplementalTransform.set(new AffineTransform());
    }
    return m_supplementalTransform.get();
}

RenderObject *SVGTextElement::createRenderer(RenderArena *arena, RenderStyle *style)
{
    Q_UNUSED(style);
    // qDebug() << "create renderer for <text>";
    return new(arena) RenderSVGText(this);
}

bool SVGTextElement::childShouldCreateRenderer(Node *child) const
{
    if (child->isTextNode()
#if ENABLE(SVG_FONTS)
            || child->hasTagName(SVGNames::altGlyphTag)
#endif
            || child->hasTagName(SVGNames::tspanTag) || child->hasTagName(SVGNames::trefTag) || child->hasTagName(SVGNames::aTag) || child->hasTagName(SVGNames::textPathTag)) {
        return true;
    }
    return false;
}

void SVGTextElement::svgAttributeChanged(const QualifiedName &attrName)
{
    SVGTextPositioningElement::svgAttributeChanged(attrName);

    if (!renderer()) {
        return;
    }

    if (SVGTextPositioningElement::isKnownAttribute(attrName)) {
        renderer()->setNeedsLayout(true);
    }
}

}

#endif // ENABLE(SVG)
