File indexing completed on 2024-04-28 15:24:27

0001 /*
0002     Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
0003                   2004, 2005, 2006 Rob Buis <buis@kde.org>
0004 
0005     This file is part of the KDE project
0006 
0007     This library is free software; you can redistribute it and/or
0008     modify it under the terms of the GNU Library General Public
0009     License as published by the Free Software Foundation; either
0010     version 2 of the License, or (at your option) any later version.
0011 
0012     This library is distributed in the hope that it will be useful,
0013     but WITHOUT ANY WARRANTY; without even the implied warranty of
0014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0015     Library General Public License for more details.
0016 
0017     You should have received a copy of the GNU Library General Public License
0018     along with this library; see the file COPYING.LIB.  If not, write to
0019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0020     Boston, MA 02110-1301, USA.
0021 */
0022 
0023 #ifndef SVGAngle_h
0024 #define SVGAngle_h
0025 
0026 #if ENABLE(SVG)
0027 //#include "PlatformString.h"
0028 #include "wtf/RefCounted.h"
0029 #include "SVGNames.h"
0030 
0031 namespace WebCore
0032 {
0033 
0034 class SVGStyledElement;
0035 
0036 class SVGAngle : public RefCounted<SVGAngle>
0037 {
0038 public:
0039     SVGAngle();
0040     virtual ~SVGAngle();
0041 
0042     enum SVGAngleType {
0043         SVG_ANGLETYPE_UNKNOWN           = 0,
0044         SVG_ANGLETYPE_UNSPECIFIED       = 1,
0045         SVG_ANGLETYPE_DEG               = 2,
0046         SVG_ANGLETYPE_RAD               = 3,
0047         SVG_ANGLETYPE_GRAD              = 4
0048     };
0049 
0050     SVGAngleType unitType() const;
0051 
0052     void setValue(float);
0053     float value() const;
0054 
0055     void setValueInSpecifiedUnits(float valueInSpecifiedUnits);
0056     float valueInSpecifiedUnits() const;
0057 
0058     void setValueAsString(const String &);
0059     String valueAsString() const;
0060 
0061     void newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits);
0062     void convertToSpecifiedUnits(unsigned short unitType);
0063 
0064     // Helpers
0065     static double todeg(double rad);
0066     static double torad(double deg);
0067 
0068     // Returns the angle that divides the shortest arc between the two angles.
0069     static double shortestArcBisector(double angle1, double angle2);
0070 
0071     // Throughout SVG 1.1 'SVGAngle' is only used for 'SVGMarkerElement' (orient-angle)
0072     const QualifiedName &associatedAttributeName() const
0073     {
0074         return SVGNames::orientAttr;
0075     }
0076 
0077 private:
0078     SVGAngleType m_unitType;
0079     float m_value;
0080     float m_valueInSpecifiedUnits;
0081     mutable String m_valueAsString;
0082 
0083     void calculate();
0084 };
0085 
0086 } // namespace WebCore
0087 
0088 #endif // ENABLE(SVG)
0089 #endif // SVGAngle_h