File indexing completed on 2024-04-28 11:39:08

 /*
     Copyright (C) 2004, 2005, 2007, 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.
 */
 
 #include "wtf/Platform.h"
 
 #if ENABLE(SVG)
 #include "SVGAngle.h"
 
 #include <math.h>
 #include <wtf/MathExtras.h>
 
 namespace WebCore
 {
 
 SVGAngle::SVGAngle()
     : RefCounted<SVGAngle>(0)
     , 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;
 }
 
 // Helpers
 double SVGAngle::todeg(double rad)
 {
     return rad2deg(rad);
 }
 
 double SVGAngle::torad(double deg)
 {
     return deg2rad(deg);
 }
 
 double SVGAngle::shortestArcBisector(double angle1, double angle2)
 {
     double bisector = (angle1 + angle2) / 2;
 
     if (fabs(angle1 - angle2) > 180) {
         bisector += 180;
     }
 
     return bisector;
 }
 
 }
 
 #endif // ENABLE(SVG)