/*

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

                  2004, 2005, 2006 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 "SVGAngle.h"

#if ENABLE(SVG)

#include <wtf/MathExtras.h>

namespace WebCore {

SVGAngle::SVGAngle()

    : m_unitType(SVG_ANGLETYPE_UNKNOWN)

    , m_value(0)

    , m_valueInSpecifiedUnits(0)

{

}

SVGAngle::~SVGAngle()

{

}

SVGAngle::SVGAngleType SVGAngle::unitType() const

{

    return m_unitType;

}

void SVGAngle::setValue(float value)

{

    m_value = value;

}

float SVGAngle::value() const

{

    return m_value;

}

// calc m_value

void SVGAngle::calculate()

{

    if (m_unitType == SVG_ANGLETYPE_GRAD)

        m_value = grad2deg(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_RAD)

        m_value = rad2deg(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_UNSPECIFIED || m_unitType == SVG_ANGLETYPE_DEG)

        m_value = m_valueInSpecifiedUnits;

}

void SVGAngle::setValueInSpecifiedUnits(float valueInSpecifiedUnits)

{

    m_valueInSpecifiedUnits = valueInSpecifiedUnits;

    calculate();

}

float SVGAngle::valueInSpecifiedUnits() const

{

    return m_valueInSpecifiedUnits;

}

void SVGAngle::setValueAsString(const String& s)

{

    m_valueAsString = s;

    bool bOK;

    m_valueInSpecifiedUnits = m_valueAsString.toFloat(&bOK);

    m_unitType = SVG_ANGLETYPE_UNSPECIFIED;

    if (!bOK) {

        if (m_valueAsString.endsWith("deg"))

            m_unitType = SVG_ANGLETYPE_DEG;

        else if (m_valueAsString.endsWith("grad"))

            m_unitType = SVG_ANGLETYPE_GRAD;

        else if (m_valueAsString.endsWith("rad"))

            m_unitType = SVG_ANGLETYPE_RAD;

    }

    calculate();

}

String SVGAngle::valueAsString() const

{

    m_valueAsString = String::number(m_valueInSpecifiedUnits);

    switch (m_unitType) {

        case SVG_ANGLETYPE_UNSPECIFIED:

        case SVG_ANGLETYPE_DEG:

            m_valueAsString += "deg";

            break;

        case SVG_ANGLETYPE_RAD:

            m_valueAsString += "rad";

            break;

        case SVG_ANGLETYPE_GRAD:

            m_valueAsString += "grad";

            break;

        case SVG_ANGLETYPE_UNKNOWN:

            break;

    }

    return m_valueAsString;

}

void SVGAngle::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits)

{

    m_unitType = (SVGAngleType)unitType;

    m_valueInSpecifiedUnits = valueInSpecifiedUnits;

    calculate();

}

void SVGAngle::convertToSpecifiedUnits(unsigned short unitType)

{

    if (m_unitType == unitType)

        return;

    if (m_unitType == SVG_ANGLETYPE_DEG && unitType == SVG_ANGLETYPE_RAD)

        m_valueInSpecifiedUnits = deg2rad(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_GRAD && unitType == SVG_ANGLETYPE_RAD)

        m_valueInSpecifiedUnits = grad2rad(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_DEG && unitType == SVG_ANGLETYPE_GRAD)

        m_valueInSpecifiedUnits = deg2grad(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_RAD && unitType == SVG_ANGLETYPE_GRAD)

        m_valueInSpecifiedUnits = rad2grad(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_RAD && unitType == SVG_ANGLETYPE_DEG)

        m_valueInSpecifiedUnits = rad2deg(m_valueInSpecifiedUnits);

    else if (m_unitType == SVG_ANGLETYPE_GRAD && unitType == SVG_ANGLETYPE_DEG)

        m_valueInSpecifiedUnits = grad2deg(m_valueInSpecifiedUnits);

    m_unitType = (SVGAngleType)unitType;

}

}

#endif // ENABLE(SVG)