/*
 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006, 2007, 2010 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.
 */

#ifndef SVGFitToViewBox_h
#define SVGFitToViewBox_h

#if ENABLE(SVG)
#include "QualifiedName.h"
#include <wtf/HashSet.h>

namespace WebCore {

class AffineTransform;
class Attribute;
class Document;
class FloatRect;
class SVGPreserveAspectRatio;

class SVGFitToViewBox {
public:
    virtual ~SVGFitToViewBox() { }

    bool parseViewBox(Document*, const UChar*& start, const UChar* end, FloatRect& viewBox, bool validate = true);
    static AffineTransform viewBoxToViewTransform(const FloatRect& viewBoxRect, const SVGPreserveAspectRatio&, float viewWidth, float viewHeight);

    bool parseAttribute(Document*, Attribute*);
    bool isKnownAttribute(const QualifiedName&);
    void addSupportedAttributes(HashSet<QualifiedName>&);

    virtual void setViewBoxBaseValue(const FloatRect&) = 0;
    virtual void setPreserveAspectRatioBaseValue(const SVGPreserveAspectRatio&) = 0;

private:
    bool parseViewBox(Document*, const String&, FloatRect&);
};

} // namespace WebCore

#endif // ENABLE(SVG)
#endif // SVGFitToViewBox_h
