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Diffstat (limited to 'WebCore/svg/SVGAngle.cpp')
| -rw-r--r-- | WebCore/svg/SVGAngle.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/WebCore/svg/SVGAngle.cpp b/WebCore/svg/SVGAngle.cpp new file mode 100644 index 0000000..81cf226 --- /dev/null +++ b/WebCore/svg/SVGAngle.cpp @@ -0,0 +1,175 @@ +/* + 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 "config.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) |