Source/core/svg/SVGRectElement.cpp

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

#include "core/svg/SVGRectElement.h"

#include "core/rendering/svg/RenderSVGRect.h"
#include "core/rendering/svg/RenderSVGResource.h"
#include "core/svg/SVGElementInstance.h"
#include "core/svg/SVGLength.h"

namespace WebCore {

inline SVGRectElement::SVGRectElement(Document& document)
    : SVGGeometryElement(SVGNames::rectTag, document)
    , m_x(SVGAnimatedLength::create(this, SVGNames::xAttr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
    , m_y(SVGAnimatedLength::create(this, SVGNames::yAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
    , m_width(SVGAnimatedLength::create(this, SVGNames::widthAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
    , m_height(SVGAnimatedLength::create(this, SVGNames::heightAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
    , m_rx(SVGAnimatedLength::create(this, SVGNames::rxAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
    , m_ry(SVGAnimatedLength::create(this, SVGNames::ryAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
{
    ScriptWrappable::init(this);

    addToPropertyMap(m_x);
    addToPropertyMap(m_y);
    addToPropertyMap(m_width);
    addToPropertyMap(m_height);
    addToPropertyMap(m_rx);
    addToPropertyMap(m_ry);
}

PassRefPtr<SVGRectElement> SVGRectElement::create(Document& document)
{
    return adoptRef(new SVGRectElement(document));
}

bool SVGRectElement::isSupportedAttribute(const QualifiedName& attrName)
{
    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
    if (supportedAttributes.isEmpty()) {
        supportedAttributes.add(SVGNames::xAttr);
        supportedAttributes.add(SVGNames::yAttr);
        supportedAttributes.add(SVGNames::widthAttr);
        supportedAttributes.add(SVGNames::heightAttr);
        supportedAttributes.add(SVGNames::rxAttr);
        supportedAttributes.add(SVGNames::ryAttr);
    }
    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}

void SVGRectElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    SVGParsingError parseError = NoError;

    if (!isSupportedAttribute(name))
        SVGGeometryElement::parseAttribute(name, value);
    else if (name == SVGNames::xAttr)
        m_x->setBaseValueAsString(value, parseError);
    else if (name == SVGNames::yAttr)
        m_y->setBaseValueAsString(value, parseError);
    else if (name == SVGNames::rxAttr)
        m_rx->setBaseValueAsString(value, parseError);
    else if (name == SVGNames::ryAttr)
        m_ry->setBaseValueAsString(value, parseError);
    else if (name == SVGNames::widthAttr)
        m_width->setBaseValueAsString(value, parseError);
    else if (name == SVGNames::heightAttr)
        m_height->setBaseValueAsString(value, parseError);
    else
        ASSERT_NOT_REACHED();

    reportAttributeParsingError(parseError, name, value);
}

void SVGRectElement::svgAttributeChanged(const QualifiedName& attrName)
{
    if (!isSupportedAttribute(attrName)) {
        SVGGeometryElement::svgAttributeChanged(attrName);
        return;
    }

    SVGElementInstance::InvalidationGuard invalidationGuard(this);

    bool isLengthAttribute = attrName == SVGNames::xAttr
                          || attrName == SVGNames::yAttr
                          || attrName == SVGNames::widthAttr
                          || attrName == SVGNames::heightAttr
                          || attrName == SVGNames::rxAttr
                          || attrName == SVGNames::ryAttr;

    if (isLengthAttribute)
        updateRelativeLengthsInformation();

    RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
    if (!renderer)
        return;

    if (isLengthAttribute) {
        renderer->setNeedsShapeUpdate();
        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
        return;
    }

    ASSERT_NOT_REACHED();
}

bool SVGRectElement::selfHasRelativeLengths() const
{
    return m_x->currentValue()->isRelative()
        || m_y->currentValue()->isRelative()
        || m_width->currentValue()->isRelative()
        || m_height->currentValue()->isRelative()
        || m_rx->currentValue()->isRelative()
        || m_ry->currentValue()->isRelative();
}

RenderObject* SVGRectElement::createRenderer(RenderStyle*)
{
    return new RenderSVGRect(this);
}

}