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

#ifndef SVGGradientElement_h
#define SVGGradientElement_h

#if ENABLE(SVG)
#include "SVGPaintServerGradient.h"
#include "SVGExternalResourcesRequired.h"
#include "SVGStyledElement.h"
#include "SVGURIReference.h"

namespace WebCore
{

class SVGGradientElement;
class SVGTransformList;

class SVGGradientElement : public SVGStyledElement,
    public SVGURIReference,
    public SVGExternalResourcesRequired
{
public:
    enum SVGGradientType {
        SVG_SPREADMETHOD_UNKNOWN = 0,
        SVG_SPREADMETHOD_PAD     = 1,
        SVG_SPREADMETHOD_REFLECT = 2,
        SVG_SPREADMETHOD_REPEAT  = 3
    };

    SVGGradientElement(const QualifiedName &, Document *);
    virtual ~SVGGradientElement();

    void parseMappedAttribute(MappedAttribute *) Q_DECL_OVERRIDE;
    void svgAttributeChanged(const QualifiedName &) Q_DECL_OVERRIDE;

    using DOM::NodeImpl::childrenChanged;
    void childrenChanged(bool changedByParser = false, Node *beforeChange = 0, Node *afterChange = 0, int childCountDelta = 0) Q_DECL_OVERRIDE;
    RenderObject *createRenderer(RenderArena *, RenderStyle *) Q_DECL_OVERRIDE;

    SVGResource *canvasResource() Q_DECL_OVERRIDE;

protected:
    friend class SVGPaintServerGradient;
    friend class SVGLinearGradientElement;
    friend class SVGRadialGradientElement;

    virtual void buildGradient() const = 0;
    virtual SVGPaintServerType gradientType() const = 0;

    Vector<SVGGradientStop> buildStops() const;
    mutable RefPtr<SVGPaintServerGradient> m_resource;

protected:
    ANIMATED_PROPERTY_FORWARD_DECLARATIONS(SVGURIReference, String, Href, href)
    ANIMATED_PROPERTY_FORWARD_DECLARATIONS(SVGExternalResourcesRequired, bool, ExternalResourcesRequired, externalResourcesRequired)

    ANIMATED_PROPERTY_DECLARATIONS(SVGGradientElement, int, int, SpreadMethod, spreadMethod)
    ANIMATED_PROPERTY_DECLARATIONS(SVGGradientElement, int, int, GradientUnits, gradientUnits)
    ANIMATED_PROPERTY_DECLARATIONS(SVGGradientElement, SVGTransformList *, RefPtr<SVGTransformList>, GradientTransform, gradientTransform)
};

} // namespace WebCore

#endif // ENABLE(SVG)
#endif
