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/*
* Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* 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 "SVGAngleValue.h"
#include "SVGParserUtilities.h"
#include <wtf/MathExtras.h>
#include <wtf/text/StringConcatenateNumbers.h>
#include <wtf/text/StringParsingBuffer.h>
namespace WebCore {
float SVGAngleValue::value() const
{
switch (m_unitType) {
case SVG_ANGLETYPE_GRAD:
return grad2deg(m_valueInSpecifiedUnits);
case SVG_ANGLETYPE_RAD:
return rad2deg(m_valueInSpecifiedUnits);
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_UNKNOWN:
case SVG_ANGLETYPE_DEG:
return m_valueInSpecifiedUnits;
}
ASSERT_NOT_REACHED();
return 0;
}
void SVGAngleValue::setValue(float value)
{
switch (m_unitType) {
case SVG_ANGLETYPE_GRAD:
m_valueInSpecifiedUnits = deg2grad(value);
return;
case SVG_ANGLETYPE_RAD:
m_valueInSpecifiedUnits = deg2rad(value);
return;
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_UNKNOWN:
case SVG_ANGLETYPE_DEG:
m_valueInSpecifiedUnits = value;
return;
}
ASSERT_NOT_REACHED();
}
String SVGAngleValue::valueAsString() const
{
switch (m_unitType) {
case SVG_ANGLETYPE_DEG:
return makeString(m_valueInSpecifiedUnits, "deg");
case SVG_ANGLETYPE_RAD:
return makeString(m_valueInSpecifiedUnits, "rad");
case SVG_ANGLETYPE_GRAD:
return makeString(m_valueInSpecifiedUnits, "grad");
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_UNKNOWN:
return String::number(m_valueInSpecifiedUnits);
}
ASSERT_NOT_REACHED();
return String();
}
template<typename CharacterType> static inline SVGAngleValue::Type parseAngleType(StringParsingBuffer<CharacterType> buffer)
{
switch (buffer.lengthRemaining()) {
case 0:
return SVGAngleValue::SVG_ANGLETYPE_UNSPECIFIED;
case 3:
if (buffer[0] == 'd' && buffer[1] == 'e' && buffer[2] == 'g')
return SVGAngleValue::SVG_ANGLETYPE_DEG;
if (buffer[0] == 'r' && buffer[1] == 'a' && buffer[2] == 'd')
return SVGAngleValue::SVG_ANGLETYPE_RAD;
break;
case 4:
if (buffer[0] == 'g' && buffer[1] == 'r' && buffer[2] == 'a' && buffer[3] == 'd')
return SVGAngleValue::SVG_ANGLETYPE_GRAD;
break;
}
return SVGAngleValue::SVG_ANGLETYPE_UNKNOWN;
}
ExceptionOr<void> SVGAngleValue::setValueAsString(const String& value)
{
if (value.isEmpty()) {
m_unitType = SVG_ANGLETYPE_UNSPECIFIED;
return { };
}
return readCharactersForParsing(value, [&](auto buffer) -> ExceptionOr<void> {
auto valueInSpecifiedUnits = parseNumber(buffer, SuffixSkippingPolicy::DontSkip);
if (!valueInSpecifiedUnits)
return Exception { SyntaxError };
auto unitType = parseAngleType(buffer);
if (unitType == SVGAngleValue::SVG_ANGLETYPE_UNKNOWN)
return Exception { SyntaxError };
m_unitType = unitType;
m_valueInSpecifiedUnits = *valueInSpecifiedUnits;
return { };
});
}
ExceptionOr<void> SVGAngleValue::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits)
{
if (unitType == SVG_ANGLETYPE_UNKNOWN || unitType > SVG_ANGLETYPE_GRAD)
return Exception { NotSupportedError };
m_unitType = static_cast<Type>(unitType);
m_valueInSpecifiedUnits = valueInSpecifiedUnits;
return { };
}
ExceptionOr<void> SVGAngleValue::convertToSpecifiedUnits(unsigned short unitType)
{
if (unitType == SVG_ANGLETYPE_UNKNOWN || m_unitType == SVG_ANGLETYPE_UNKNOWN || unitType > SVG_ANGLETYPE_GRAD)
return Exception { NotSupportedError };
if (unitType == m_unitType)
return { };
switch (m_unitType) {
case SVG_ANGLETYPE_RAD:
switch (unitType) {
case SVG_ANGLETYPE_GRAD:
m_valueInSpecifiedUnits = rad2grad(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_DEG:
m_valueInSpecifiedUnits = rad2deg(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_RAD:
case SVG_ANGLETYPE_UNKNOWN:
ASSERT_NOT_REACHED();
break;
}
break;
case SVG_ANGLETYPE_GRAD:
switch (unitType) {
case SVG_ANGLETYPE_RAD:
m_valueInSpecifiedUnits = grad2rad(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_DEG:
m_valueInSpecifiedUnits = grad2deg(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_GRAD:
case SVG_ANGLETYPE_UNKNOWN:
ASSERT_NOT_REACHED();
break;
}
break;
case SVG_ANGLETYPE_UNSPECIFIED:
// Spec: For angles, a unitless value is treated the same as if degrees were specified.
case SVG_ANGLETYPE_DEG:
switch (unitType) {
case SVG_ANGLETYPE_RAD:
m_valueInSpecifiedUnits = deg2rad(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_GRAD:
m_valueInSpecifiedUnits = deg2grad(m_valueInSpecifiedUnits);
break;
case SVG_ANGLETYPE_UNSPECIFIED:
case SVG_ANGLETYPE_DEG:
break;
case SVG_ANGLETYPE_UNKNOWN:
ASSERT_NOT_REACHED();
break;
}
break;
case SVG_ANGLETYPE_UNKNOWN:
ASSERT_NOT_REACHED();
break;
}
m_unitType = static_cast<Type>(unitType);
return { };
}
}
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