| /* |
| * 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> |
| |
| 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(FormattedNumber::fixedPrecision(m_valueInSpecifiedUnits), "deg"); |
| case SVG_ANGLETYPE_RAD: |
| return makeString(FormattedNumber::fixedPrecision(m_valueInSpecifiedUnits), "rad"); |
| case SVG_ANGLETYPE_GRAD: |
| return makeString(FormattedNumber::fixedPrecision(m_valueInSpecifiedUnits), "grad"); |
| case SVG_ANGLETYPE_UNSPECIFIED: |
| case SVG_ANGLETYPE_UNKNOWN: |
| return String::numberToStringFixedPrecision(m_valueInSpecifiedUnits); |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return String(); |
| } |
| |
| static inline SVGAngleValue::Type parseAngleType(const UChar* ptr, const UChar* end) |
| { |
| switch (end - ptr) { |
| case 0: |
| return SVGAngleValue::SVG_ANGLETYPE_UNSPECIFIED; |
| case 3: |
| if (ptr[0] == 'd' && ptr[1] == 'e' && ptr[2] == 'g') |
| return SVGAngleValue::SVG_ANGLETYPE_DEG; |
| if (ptr[0] == 'r' && ptr[1] == 'a' && ptr[2] == 'd') |
| return SVGAngleValue::SVG_ANGLETYPE_RAD; |
| break; |
| case 4: |
| if (ptr[0] == 'g' && ptr[1] == 'r' && ptr[2] == 'a' && ptr[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 { }; |
| } |
| |
| auto upconvertedCharacters = StringView(value).upconvertedCharacters(); |
| const UChar* ptr = upconvertedCharacters; |
| const UChar* end = ptr + value.length(); |
| |
| float valueInSpecifiedUnits = 0; |
| if (!parseNumber(ptr, end, valueInSpecifiedUnits, false)) |
| return Exception { SyntaxError }; |
| |
| auto unitType = parseAngleType(ptr, end); |
| if (unitType == 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 { }; |
| } |
| |
| } |