SVGClipPathElement.cpp   [plain text]

/*
 * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
 *
 * 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 "SVGClipPathElement.h"

#include "Attribute.h"
#include "CSSStyleSelector.h"
#include "Document.h"
#include "RenderSVGResourceClipper.h"
#include "SVGNames.h"
#include "SVGTransformList.h"
#include "SVGUnitTypes.h"

namespace WebCore {

// Animated property definitions
DEFINE_ANIMATED_ENUMERATION(SVGClipPathElement, SVGNames::clipPathUnitsAttr, ClipPathUnits, clipPathUnits)
DEFINE_ANIMATED_BOOLEAN(SVGClipPathElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)

inline SVGClipPathElement::SVGClipPathElement(const QualifiedName& tagName, Document* document)
    : SVGStyledTransformableElement(tagName, document)
    , m_clipPathUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
{
    ASSERT(hasTagName(SVGNames::clipPathTag));
}

PassRefPtr<SVGClipPathElement> SVGClipPathElement::create(const QualifiedName& tagName, Document* document)
{
    return adoptRef(new SVGClipPathElement(tagName, document));
}

void SVGClipPathElement::parseMappedAttribute(Attribute* attr)
{
    if (attr->name() == SVGNames::clipPathUnitsAttr) {
        if (attr->value() == "userSpaceOnUse")
            setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
        else if (attr->value() == "objectBoundingBox")
            setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
    } else {
        if (SVGTests::parseMappedAttribute(attr))
            return;
        if (SVGLangSpace::parseMappedAttribute(attr))
            return;
        if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
            return;
        SVGStyledTransformableElement::parseMappedAttribute(attr);
    }
}

void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
{
    SVGStyledTransformableElement::svgAttributeChanged(attrName);

    RenderObject* object = renderer();
    if (!object)
        return;

    if (attrName == SVGNames::clipPathUnitsAttr
        || SVGTests::isKnownAttribute(attrName)
        || SVGLangSpace::isKnownAttribute(attrName)
        || SVGExternalResourcesRequired::isKnownAttribute(attrName)
        || SVGStyledTransformableElement::isKnownAttribute(attrName))
        object->setNeedsLayout(true);
}

void SVGClipPathElement::synchronizeProperty(const QualifiedName& attrName)
{
    SVGStyledTransformableElement::synchronizeProperty(attrName);

    if (attrName == anyQName()) {
        synchronizeClipPathUnits();
        synchronizeExternalResourcesRequired();
        SVGTests::synchronizeProperties(this, attrName);
        return;
    }

    if (attrName == SVGNames::clipPathUnitsAttr)
        synchronizeClipPathUnits();
    else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
        synchronizeExternalResourcesRequired();
    else if (SVGTests::isKnownAttribute(attrName))
        SVGTests::synchronizeProperties(this, attrName);
}

AttributeToPropertyTypeMap& SVGClipPathElement::attributeToPropertyTypeMap()
{
    DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    return s_attributeToPropertyTypeMap;
}

void SVGClipPathElement::fillAttributeToPropertyTypeMap()
{
    AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();

    SVGStyledTransformableElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    attributeToPropertyTypeMap.set(SVGNames::clipPathUnitsAttr, AnimatedEnumeration);
}

void SVGClipPathElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
    SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);

    if (changedByParser)
        return;

    if (RenderObject* object = renderer())
        object->setNeedsLayout(true);
}

RenderObject* SVGClipPathElement::createRenderer(RenderArena* arena, RenderStyle*)
{
    return new (arena) RenderSVGResourceClipper(this);
}

}

#endif // ENABLE(SVG)