/*

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

                  2004, 2005, 2006, 2008 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 SVGPathSeg_h

#define SVGPathSeg_h

#if ENABLE(SVG)

#include "PlatformString.h"

#include "SVGNames.h"

#include <wtf/RefCounted.h>

namespace WebCore {

    class SVGPathElement;

    class SVGStyledElement;

    class SVGPathSeg : public RefCounted<SVGPathSeg> {

    public:

        virtual ~SVGPathSeg() { }

        enum SVGPathSegType {

            PATHSEG_UNKNOWN                         = 0,

            PATHSEG_CLOSEPATH                       = 1,

            PATHSEG_MOVETO_ABS                      = 2,

            PATHSEG_MOVETO_REL                      = 3,

            PATHSEG_LINETO_ABS                      = 4,

            PATHSEG_LINETO_REL                      = 5,

            PATHSEG_CURVETO_CUBIC_ABS               = 6,

            PATHSEG_CURVETO_CUBIC_REL               = 7,

            PATHSEG_CURVETO_QUADRATIC_ABS           = 8,

            PATHSEG_CURVETO_QUADRATIC_REL           = 9,

            PATHSEG_ARC_ABS                         = 10,

            PATHSEG_ARC_REL                         = 11,

            PATHSEG_LINETO_HORIZONTAL_ABS           = 12,

            PATHSEG_LINETO_HORIZONTAL_REL           = 13,

            PATHSEG_LINETO_VERTICAL_ABS             = 14,

            PATHSEG_LINETO_VERTICAL_REL             = 15,

            PATHSEG_CURVETO_CUBIC_SMOOTH_ABS        = 16,

            PATHSEG_CURVETO_CUBIC_SMOOTH_REL        = 17,

            PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS    = 18,

            PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL    = 19

        };

        virtual unsigned short pathSegType() const { return PATHSEG_UNKNOWN; }

        virtual String pathSegTypeAsLetter() const { return ""; }

        virtual String toString() const { return ""; }

        const QualifiedName& associatedAttributeName() const { return SVGNames::dAttr; }

    protected:

        SVGPathSeg() { }

    };

    class SVGPathSegSingleCoord : public SVGPathSeg { 

    public:

        SVGPathSegSingleCoord(float x, float y)

        : SVGPathSeg() , m_x(x) , m_y(y) {}

        void setX(float x) { m_x = x; }

        float x() const { return m_x; }

        void setY(float y) { m_y = y; }

        float y() const { return m_y; }

        virtual String toString() const { return pathSegTypeAsLetter() + String::format(" %.6lg %.6lg", m_x, m_y); }

    private:

        float m_x;

        float m_y;

    };

} // namespace WebCore

#endif // ENABLE(SVG)

#endif