| /* |
| * 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 "core/svg/SVGAngle.h" |
| |
| #include "core/svg/SVGAnimationElement.h" |
| #include "core/svg/SVGParserUtilities.h" |
| #include "wtf/MathExtras.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| template <> |
| const SVGEnumerationStringEntries& |
| getStaticStringEntries<SVGMarkerOrientType>() { |
| DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ()); |
| if (entries.isEmpty()) { |
| entries.append(std::make_pair(SVGMarkerOrientAuto, "auto")); |
| entries.append(std::make_pair(SVGMarkerOrientAngle, "angle")); |
| entries.append( |
| std::make_pair(SVGMarkerOrientAutoStartReverse, "auto-start-reverse")); |
| } |
| return entries; |
| } |
| |
| template <> |
| unsigned short getMaxExposedEnumValue<SVGMarkerOrientType>() { |
| return SVGMarkerOrientAngle; |
| } |
| |
| SVGMarkerOrientEnumeration::SVGMarkerOrientEnumeration(SVGAngle* angle) |
| : SVGEnumeration<SVGMarkerOrientType>(SVGMarkerOrientAngle), |
| m_angle(angle) {} |
| |
| SVGMarkerOrientEnumeration::~SVGMarkerOrientEnumeration() {} |
| |
| DEFINE_TRACE(SVGMarkerOrientEnumeration) { |
| visitor->trace(m_angle); |
| SVGEnumeration<SVGMarkerOrientType>::trace(visitor); |
| } |
| |
| void SVGMarkerOrientEnumeration::notifyChange() { |
| ASSERT(m_angle); |
| m_angle->orientTypeChanged(); |
| } |
| |
| void SVGMarkerOrientEnumeration::add(SVGPropertyBase*, SVGElement*) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| ASSERT_NOT_REACHED(); |
| } |
| |
| void SVGMarkerOrientEnumeration::calculateAnimatedValue( |
| SVGAnimationElement*, |
| float percentage, |
| unsigned repeatCount, |
| SVGPropertyBase* from, |
| SVGPropertyBase* to, |
| SVGPropertyBase* toAtEndOfDurationValue, |
| SVGElement* contextElement) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| ASSERT_NOT_REACHED(); |
| } |
| |
| float SVGMarkerOrientEnumeration::calculateDistance( |
| SVGPropertyBase* to, |
| SVGElement* contextElement) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| ASSERT_NOT_REACHED(); |
| return -1.0; |
| } |
| |
| SVGAngle::SVGAngle() |
| : m_unitType(kSvgAngletypeUnspecified), |
| m_valueInSpecifiedUnits(0), |
| m_orientType(SVGMarkerOrientEnumeration::create(this)) {} |
| |
| SVGAngle::SVGAngle(SVGAngleType unitType, |
| float valueInSpecifiedUnits, |
| SVGMarkerOrientType orientType) |
| : m_unitType(unitType), |
| m_valueInSpecifiedUnits(valueInSpecifiedUnits), |
| m_orientType(SVGMarkerOrientEnumeration::create(this)) { |
| m_orientType->setEnumValue(orientType); |
| } |
| |
| SVGAngle::~SVGAngle() {} |
| |
| DEFINE_TRACE(SVGAngle) { |
| visitor->trace(m_orientType); |
| SVGPropertyHelper<SVGAngle>::trace(visitor); |
| } |
| |
| SVGAngle* SVGAngle::clone() const { |
| return new SVGAngle(m_unitType, m_valueInSpecifiedUnits, |
| m_orientType->enumValue()); |
| } |
| |
| float SVGAngle::value() const { |
| switch (m_unitType) { |
| case kSvgAngletypeGrad: |
| return grad2deg(m_valueInSpecifiedUnits); |
| case kSvgAngletypeRad: |
| return rad2deg(m_valueInSpecifiedUnits); |
| case kSvgAngletypeTurn: |
| return turn2deg(m_valueInSpecifiedUnits); |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| case kSvgAngletypeDeg: |
| return m_valueInSpecifiedUnits; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| void SVGAngle::setValue(float value) { |
| switch (m_unitType) { |
| case kSvgAngletypeGrad: |
| m_valueInSpecifiedUnits = deg2grad(value); |
| break; |
| case kSvgAngletypeRad: |
| m_valueInSpecifiedUnits = deg2rad(value); |
| break; |
| case kSvgAngletypeTurn: |
| m_valueInSpecifiedUnits = deg2turn(value); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| case kSvgAngletypeDeg: |
| m_valueInSpecifiedUnits = value; |
| break; |
| } |
| m_orientType->setEnumValue(SVGMarkerOrientAngle); |
| } |
| |
| template <typename CharType> |
| static SVGAngle::SVGAngleType stringToAngleType(const CharType*& ptr, |
| const CharType* end) { |
| // If there's no unit given, the angle type is unspecified. |
| if (ptr == end) |
| return SVGAngle::kSvgAngletypeUnspecified; |
| |
| SVGAngle::SVGAngleType type = SVGAngle::kSvgAngletypeUnknown; |
| if (isHTMLSpace<CharType>(ptr[0])) { |
| type = SVGAngle::kSvgAngletypeUnspecified; |
| ptr++; |
| } else if (end - ptr >= 3) { |
| if (ptr[0] == 'd' && ptr[1] == 'e' && ptr[2] == 'g') { |
| type = SVGAngle::kSvgAngletypeDeg; |
| ptr += 3; |
| } else if (ptr[0] == 'r' && ptr[1] == 'a' && ptr[2] == 'd') { |
| type = SVGAngle::kSvgAngletypeRad; |
| ptr += 3; |
| } else if (end - ptr >= 4) { |
| if (ptr[0] == 'g' && ptr[1] == 'r' && ptr[2] == 'a' && ptr[3] == 'd') { |
| type = SVGAngle::kSvgAngletypeGrad; |
| ptr += 4; |
| } else if (ptr[0] == 't' && ptr[1] == 'u' && ptr[2] == 'r' && |
| ptr[3] == 'n') { |
| type = SVGAngle::kSvgAngletypeTurn; |
| ptr += 4; |
| } |
| } |
| } |
| |
| if (!skipOptionalSVGSpaces(ptr, end)) |
| return type; |
| |
| return SVGAngle::kSvgAngletypeUnknown; |
| } |
| |
| String SVGAngle::valueAsString() const { |
| switch (m_unitType) { |
| case kSvgAngletypeDeg: { |
| DEFINE_STATIC_LOCAL(String, degString, ("deg")); |
| return String::number(m_valueInSpecifiedUnits) + degString; |
| } |
| case kSvgAngletypeRad: { |
| DEFINE_STATIC_LOCAL(String, radString, ("rad")); |
| return String::number(m_valueInSpecifiedUnits) + radString; |
| } |
| case kSvgAngletypeGrad: { |
| DEFINE_STATIC_LOCAL(String, gradString, ("grad")); |
| return String::number(m_valueInSpecifiedUnits) + gradString; |
| } |
| case kSvgAngletypeTurn: { |
| DEFINE_STATIC_LOCAL(String, turnString, ("turn")); |
| return String::number(m_valueInSpecifiedUnits) + turnString; |
| } |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| return String::number(m_valueInSpecifiedUnits); |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return String(); |
| } |
| |
| template <typename CharType> |
| static SVGParsingError parseValue(const String& value, |
| float& valueInSpecifiedUnits, |
| SVGAngle::SVGAngleType& unitType) { |
| const CharType* ptr = value.getCharacters<CharType>(); |
| const CharType* end = ptr + value.length(); |
| |
| if (!parseNumber(ptr, end, valueInSpecifiedUnits, AllowLeadingWhitespace)) |
| return SVGParsingError(SVGParseStatus::ExpectedAngle, |
| ptr - value.getCharacters<CharType>()); |
| |
| unitType = stringToAngleType(ptr, end); |
| if (unitType == SVGAngle::kSvgAngletypeUnknown) |
| return SVGParsingError(SVGParseStatus::ExpectedAngle, |
| ptr - value.getCharacters<CharType>()); |
| |
| return SVGParseStatus::NoError; |
| } |
| |
| SVGParsingError SVGAngle::setValueAsString(const String& value) { |
| if (value.isEmpty()) { |
| newValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| return SVGParseStatus::NoError; |
| } |
| |
| if (value == "auto") { |
| newValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| m_orientType->setEnumValue(SVGMarkerOrientAuto); |
| return SVGParseStatus::NoError; |
| } |
| if (value == "auto-start-reverse") { |
| newValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| m_orientType->setEnumValue(SVGMarkerOrientAutoStartReverse); |
| return SVGParseStatus::NoError; |
| } |
| |
| float valueInSpecifiedUnits = 0; |
| SVGAngleType unitType = kSvgAngletypeUnknown; |
| |
| SVGParsingError error; |
| if (value.is8Bit()) |
| error = parseValue<LChar>(value, valueInSpecifiedUnits, unitType); |
| else |
| error = parseValue<UChar>(value, valueInSpecifiedUnits, unitType); |
| if (error != SVGParseStatus::NoError) |
| return error; |
| |
| m_orientType->setEnumValue(SVGMarkerOrientAngle); |
| m_unitType = unitType; |
| m_valueInSpecifiedUnits = valueInSpecifiedUnits; |
| return SVGParseStatus::NoError; |
| } |
| |
| void SVGAngle::newValueSpecifiedUnits(SVGAngleType unitType, |
| float valueInSpecifiedUnits) { |
| m_orientType->setEnumValue(SVGMarkerOrientAngle); |
| m_unitType = unitType; |
| m_valueInSpecifiedUnits = valueInSpecifiedUnits; |
| } |
| |
| void SVGAngle::convertToSpecifiedUnits(SVGAngleType unitType) { |
| if (unitType == m_unitType) |
| return; |
| |
| switch (m_unitType) { |
| case kSvgAngletypeTurn: |
| switch (unitType) { |
| case kSvgAngletypeGrad: |
| m_valueInSpecifiedUnits = turn2grad(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| m_valueInSpecifiedUnits = turn2deg(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeRad: |
| m_valueInSpecifiedUnits = deg2rad(turn2deg(m_valueInSpecifiedUnits)); |
| break; |
| case kSvgAngletypeTurn: |
| case kSvgAngletypeUnknown: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeRad: |
| switch (unitType) { |
| case kSvgAngletypeGrad: |
| m_valueInSpecifiedUnits = rad2grad(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| m_valueInSpecifiedUnits = rad2deg(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeTurn: |
| m_valueInSpecifiedUnits = deg2turn(rad2deg(m_valueInSpecifiedUnits)); |
| break; |
| case kSvgAngletypeRad: |
| case kSvgAngletypeUnknown: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeGrad: |
| switch (unitType) { |
| case kSvgAngletypeRad: |
| m_valueInSpecifiedUnits = grad2rad(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| m_valueInSpecifiedUnits = grad2deg(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeTurn: |
| m_valueInSpecifiedUnits = grad2turn(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeGrad: |
| case kSvgAngletypeUnknown: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeUnspecified: |
| // Spec: For angles, a unitless value is treated the same as if degrees were |
| // specified. |
| case kSvgAngletypeDeg: |
| switch (unitType) { |
| case kSvgAngletypeRad: |
| m_valueInSpecifiedUnits = deg2rad(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeGrad: |
| m_valueInSpecifiedUnits = deg2grad(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeTurn: |
| m_valueInSpecifiedUnits = deg2turn(m_valueInSpecifiedUnits); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| break; |
| case kSvgAngletypeUnknown: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeUnknown: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| m_unitType = unitType; |
| m_orientType->setEnumValue(SVGMarkerOrientAngle); |
| } |
| |
| void SVGAngle::add(SVGPropertyBase* other, SVGElement*) { |
| SVGAngle* otherAngle = toSVGAngle(other); |
| |
| // Only respect by animations, if from and by are both specified in angles |
| // (and not, for example, 'auto'). |
| if (orientType()->enumValue() != SVGMarkerOrientAngle || |
| otherAngle->orientType()->enumValue() != SVGMarkerOrientAngle) |
| return; |
| |
| setValue(value() + otherAngle->value()); |
| } |
| |
| void SVGAngle::assign(const SVGAngle& other) { |
| SVGMarkerOrientType otherOrientType = other.orientType()->enumValue(); |
| if (otherOrientType == SVGMarkerOrientAngle) |
| newValueSpecifiedUnits(other.unitType(), other.valueInSpecifiedUnits()); |
| else |
| m_orientType->setEnumValue(otherOrientType); |
| } |
| |
| void SVGAngle::calculateAnimatedValue(SVGAnimationElement* animationElement, |
| float percentage, |
| unsigned repeatCount, |
| SVGPropertyBase* from, |
| SVGPropertyBase* to, |
| SVGPropertyBase* toAtEndOfDuration, |
| SVGElement*) { |
| ASSERT(animationElement); |
| bool isToAnimation = animationElement->getAnimationMode() == ToAnimation; |
| |
| SVGAngle* fromAngle = isToAnimation ? this : toSVGAngle(from); |
| SVGAngle* toAngle = toSVGAngle(to); |
| SVGMarkerOrientType fromOrientType = fromAngle->orientType()->enumValue(); |
| SVGMarkerOrientType toOrientType = toAngle->orientType()->enumValue(); |
| |
| if (fromOrientType != toOrientType) { |
| // Fall back to discrete animation. |
| assign(percentage < 0.5f ? *fromAngle : *toAngle); |
| return; |
| } |
| |
| switch (fromOrientType) { |
| // From 'auto' to 'auto', or 'auto-start-reverse' to 'auto-start-reverse' |
| case SVGMarkerOrientAuto: |
| case SVGMarkerOrientAutoStartReverse: |
| orientType()->setEnumValue(fromOrientType); |
| return; |
| |
| // Regular from angle to angle animation, with all features like additive |
| // etc. |
| case SVGMarkerOrientAngle: { |
| float animatedValue = value(); |
| SVGAngle* toAtEndOfDurationAngle = toSVGAngle(toAtEndOfDuration); |
| |
| animationElement->animateAdditiveNumber( |
| percentage, repeatCount, fromAngle->value(), toAngle->value(), |
| toAtEndOfDurationAngle->value(), animatedValue); |
| orientType()->setEnumValue(SVGMarkerOrientAngle); |
| setValue(animatedValue); |
| } |
| return; |
| |
| // If the enumeration value is not angle or auto, its unknown. |
| default: |
| m_valueInSpecifiedUnits = 0; |
| orientType()->setEnumValue(SVGMarkerOrientUnknown); |
| return; |
| } |
| } |
| |
| float SVGAngle::calculateDistance(SVGPropertyBase* other, SVGElement*) { |
| return fabsf(value() - toSVGAngle(other)->value()); |
| } |
| |
| void SVGAngle::orientTypeChanged() { |
| if (orientType()->enumValue() == SVGMarkerOrientAuto || |
| orientType()->enumValue() == SVGMarkerOrientAutoStartReverse) { |
| m_unitType = kSvgAngletypeUnspecified; |
| m_valueInSpecifiedUnits = 0; |
| } |
| } |
| |
| } // namespace blink |
