| /* |
| * 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 "platform/wtf/MathExtras.h" |
| #include "platform/wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| template <> |
| const SVGEnumerationStringEntries& |
| GetStaticStringEntries<SVGMarkerOrientType>() { |
| DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ()); |
| if (entries.IsEmpty()) { |
| entries.push_back(std::make_pair(kSVGMarkerOrientAuto, "auto")); |
| entries.push_back(std::make_pair(kSVGMarkerOrientAngle, "angle")); |
| entries.push_back( |
| std::make_pair(kSVGMarkerOrientAutoStartReverse, "auto-start-reverse")); |
| } |
| return entries; |
| } |
| |
| template <> |
| unsigned short GetMaxExposedEnumValue<SVGMarkerOrientType>() { |
| return kSVGMarkerOrientAngle; |
| } |
| |
| SVGMarkerOrientEnumeration::SVGMarkerOrientEnumeration(SVGAngle* angle) |
| : SVGEnumeration<SVGMarkerOrientType>(kSVGMarkerOrientAngle), |
| angle_(angle) {} |
| |
| SVGMarkerOrientEnumeration::~SVGMarkerOrientEnumeration() = default; |
| |
| void SVGMarkerOrientEnumeration::Trace(blink::Visitor* visitor) { |
| visitor->Trace(angle_); |
| SVGEnumeration<SVGMarkerOrientType>::Trace(visitor); |
| } |
| |
| void SVGMarkerOrientEnumeration::NotifyChange() { |
| DCHECK(angle_); |
| angle_->OrientTypeChanged(); |
| } |
| |
| void SVGMarkerOrientEnumeration::Add(SVGPropertyBase*, SVGElement*) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| NOTREACHED(); |
| } |
| |
| void SVGMarkerOrientEnumeration::CalculateAnimatedValue( |
| SVGAnimationElement*, |
| float percentage, |
| unsigned repeat_count, |
| SVGPropertyBase* from, |
| SVGPropertyBase* to, |
| SVGPropertyBase* to_at_end_of_duration_value, |
| SVGElement* context_element) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| NOTREACHED(); |
| } |
| |
| float SVGMarkerOrientEnumeration::CalculateDistance( |
| SVGPropertyBase* to, |
| SVGElement* context_element) { |
| // SVGMarkerOrientEnumeration is only animated via SVGAngle |
| NOTREACHED(); |
| return -1.0; |
| } |
| |
| SVGAngle::SVGAngle() |
| : unit_type_(kSvgAngletypeUnspecified), |
| value_in_specified_units_(0), |
| orient_type_(SVGMarkerOrientEnumeration::Create(this)) {} |
| |
| SVGAngle::SVGAngle(SVGAngleType unit_type, |
| float value_in_specified_units, |
| SVGMarkerOrientType orient_type) |
| : unit_type_(unit_type), |
| value_in_specified_units_(value_in_specified_units), |
| orient_type_(SVGMarkerOrientEnumeration::Create(this)) { |
| orient_type_->SetEnumValue(orient_type); |
| } |
| |
| SVGAngle::~SVGAngle() = default; |
| |
| void SVGAngle::Trace(blink::Visitor* visitor) { |
| visitor->Trace(orient_type_); |
| SVGPropertyHelper<SVGAngle>::Trace(visitor); |
| } |
| |
| SVGAngle* SVGAngle::Clone() const { |
| return new SVGAngle(unit_type_, value_in_specified_units_, |
| orient_type_->EnumValue()); |
| } |
| |
| float SVGAngle::Value() const { |
| switch (unit_type_) { |
| case kSvgAngletypeGrad: |
| return grad2deg(value_in_specified_units_); |
| case kSvgAngletypeRad: |
| return rad2deg(value_in_specified_units_); |
| case kSvgAngletypeTurn: |
| return turn2deg(value_in_specified_units_); |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| case kSvgAngletypeDeg: |
| return value_in_specified_units_; |
| } |
| |
| NOTREACHED(); |
| return 0; |
| } |
| |
| void SVGAngle::SetValue(float value) { |
| switch (unit_type_) { |
| case kSvgAngletypeGrad: |
| value_in_specified_units_ = deg2grad(value); |
| break; |
| case kSvgAngletypeRad: |
| value_in_specified_units_ = deg2rad(value); |
| break; |
| case kSvgAngletypeTurn: |
| value_in_specified_units_ = deg2turn(value); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| case kSvgAngletypeDeg: |
| value_in_specified_units_ = value; |
| break; |
| } |
| orient_type_->SetEnumValue(kSVGMarkerOrientAngle); |
| } |
| |
| 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 (unit_type_) { |
| case kSvgAngletypeDeg: { |
| DEFINE_STATIC_LOCAL(String, deg_string, ("deg")); |
| return String::Number(value_in_specified_units_) + deg_string; |
| } |
| case kSvgAngletypeRad: { |
| DEFINE_STATIC_LOCAL(String, rad_string, ("rad")); |
| return String::Number(value_in_specified_units_) + rad_string; |
| } |
| case kSvgAngletypeGrad: { |
| DEFINE_STATIC_LOCAL(String, grad_string, ("grad")); |
| return String::Number(value_in_specified_units_) + grad_string; |
| } |
| case kSvgAngletypeTurn: { |
| DEFINE_STATIC_LOCAL(String, turn_string, ("turn")); |
| return String::Number(value_in_specified_units_) + turn_string; |
| } |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeUnknown: |
| return String::Number(value_in_specified_units_); |
| } |
| |
| NOTREACHED(); |
| return String(); |
| } |
| |
| template <typename CharType> |
| static SVGParsingError ParseValue(const String& value, |
| float& value_in_specified_units, |
| SVGAngle::SVGAngleType& unit_type) { |
| const CharType* ptr = value.GetCharacters<CharType>(); |
| const CharType* end = ptr + value.length(); |
| |
| if (!ParseNumber(ptr, end, value_in_specified_units, kAllowLeadingWhitespace)) |
| return SVGParsingError(SVGParseStatus::kExpectedAngle, |
| ptr - value.GetCharacters<CharType>()); |
| |
| unit_type = StringToAngleType(ptr, end); |
| if (unit_type == SVGAngle::kSvgAngletypeUnknown) |
| return SVGParsingError(SVGParseStatus::kExpectedAngle, |
| ptr - value.GetCharacters<CharType>()); |
| |
| return SVGParseStatus::kNoError; |
| } |
| |
| SVGParsingError SVGAngle::SetValueAsString(const String& value) { |
| if (value.IsEmpty()) { |
| NewValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| return SVGParseStatus::kNoError; |
| } |
| |
| if (value == "auto") { |
| NewValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| orient_type_->SetEnumValue(kSVGMarkerOrientAuto); |
| return SVGParseStatus::kNoError; |
| } |
| if (value == "auto-start-reverse") { |
| NewValueSpecifiedUnits(kSvgAngletypeUnspecified, 0); |
| orient_type_->SetEnumValue(kSVGMarkerOrientAutoStartReverse); |
| return SVGParseStatus::kNoError; |
| } |
| |
| float value_in_specified_units = 0; |
| SVGAngleType unit_type = kSvgAngletypeUnknown; |
| |
| SVGParsingError error; |
| if (value.Is8Bit()) |
| error = ParseValue<LChar>(value, value_in_specified_units, unit_type); |
| else |
| error = ParseValue<UChar>(value, value_in_specified_units, unit_type); |
| if (error != SVGParseStatus::kNoError) |
| return error; |
| |
| orient_type_->SetEnumValue(kSVGMarkerOrientAngle); |
| unit_type_ = unit_type; |
| value_in_specified_units_ = value_in_specified_units; |
| return SVGParseStatus::kNoError; |
| } |
| |
| void SVGAngle::NewValueSpecifiedUnits(SVGAngleType unit_type, |
| float value_in_specified_units) { |
| orient_type_->SetEnumValue(kSVGMarkerOrientAngle); |
| unit_type_ = unit_type; |
| value_in_specified_units_ = value_in_specified_units; |
| } |
| |
| void SVGAngle::ConvertToSpecifiedUnits(SVGAngleType unit_type) { |
| if (unit_type == unit_type_) |
| return; |
| |
| switch (unit_type_) { |
| case kSvgAngletypeTurn: |
| switch (unit_type) { |
| case kSvgAngletypeGrad: |
| value_in_specified_units_ = turn2grad(value_in_specified_units_); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| value_in_specified_units_ = turn2deg(value_in_specified_units_); |
| break; |
| case kSvgAngletypeRad: |
| value_in_specified_units_ = |
| deg2rad(turn2deg(value_in_specified_units_)); |
| break; |
| case kSvgAngletypeTurn: |
| case kSvgAngletypeUnknown: |
| NOTREACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeRad: |
| switch (unit_type) { |
| case kSvgAngletypeGrad: |
| value_in_specified_units_ = rad2grad(value_in_specified_units_); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| value_in_specified_units_ = rad2deg(value_in_specified_units_); |
| break; |
| case kSvgAngletypeTurn: |
| value_in_specified_units_ = |
| deg2turn(rad2deg(value_in_specified_units_)); |
| break; |
| case kSvgAngletypeRad: |
| case kSvgAngletypeUnknown: |
| NOTREACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeGrad: |
| switch (unit_type) { |
| case kSvgAngletypeRad: |
| value_in_specified_units_ = grad2rad(value_in_specified_units_); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| value_in_specified_units_ = grad2deg(value_in_specified_units_); |
| break; |
| case kSvgAngletypeTurn: |
| value_in_specified_units_ = grad2turn(value_in_specified_units_); |
| break; |
| case kSvgAngletypeGrad: |
| case kSvgAngletypeUnknown: |
| NOTREACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeUnspecified: |
| // Spec: For angles, a unitless value is treated the same as if degrees were |
| // specified. |
| case kSvgAngletypeDeg: |
| switch (unit_type) { |
| case kSvgAngletypeRad: |
| value_in_specified_units_ = deg2rad(value_in_specified_units_); |
| break; |
| case kSvgAngletypeGrad: |
| value_in_specified_units_ = deg2grad(value_in_specified_units_); |
| break; |
| case kSvgAngletypeTurn: |
| value_in_specified_units_ = deg2turn(value_in_specified_units_); |
| break; |
| case kSvgAngletypeUnspecified: |
| case kSvgAngletypeDeg: |
| break; |
| case kSvgAngletypeUnknown: |
| NOTREACHED(); |
| break; |
| } |
| break; |
| case kSvgAngletypeUnknown: |
| NOTREACHED(); |
| break; |
| } |
| |
| unit_type_ = unit_type; |
| orient_type_->SetEnumValue(kSVGMarkerOrientAngle); |
| } |
| |
| void SVGAngle::Add(SVGPropertyBase* other, SVGElement*) { |
| SVGAngle* other_angle = ToSVGAngle(other); |
| |
| // Only respect by animations, if from and by are both specified in angles |
| // (and not, for example, 'auto'). |
| if (OrientType()->EnumValue() != kSVGMarkerOrientAngle || |
| other_angle->OrientType()->EnumValue() != kSVGMarkerOrientAngle) |
| return; |
| |
| SetValue(Value() + other_angle->Value()); |
| } |
| |
| void SVGAngle::Assign(const SVGAngle& other) { |
| SVGMarkerOrientType other_orient_type = other.OrientType()->EnumValue(); |
| if (other_orient_type == kSVGMarkerOrientAngle) |
| NewValueSpecifiedUnits(other.UnitType(), other.ValueInSpecifiedUnits()); |
| else |
| orient_type_->SetEnumValue(other_orient_type); |
| } |
| |
| void SVGAngle::CalculateAnimatedValue(SVGAnimationElement* animation_element, |
| float percentage, |
| unsigned repeat_count, |
| SVGPropertyBase* from, |
| SVGPropertyBase* to, |
| SVGPropertyBase* to_at_end_of_duration, |
| SVGElement*) { |
| DCHECK(animation_element); |
| bool is_to_animation = animation_element->GetAnimationMode() == kToAnimation; |
| |
| SVGAngle* from_angle = is_to_animation ? this : ToSVGAngle(from); |
| SVGAngle* to_angle = ToSVGAngle(to); |
| SVGMarkerOrientType from_orient_type = from_angle->OrientType()->EnumValue(); |
| SVGMarkerOrientType to_orient_type = to_angle->OrientType()->EnumValue(); |
| |
| if (from_orient_type != to_orient_type) { |
| // Fall back to discrete animation. |
| Assign(percentage < 0.5f ? *from_angle : *to_angle); |
| return; |
| } |
| |
| switch (from_orient_type) { |
| // From 'auto' to 'auto', or 'auto-start-reverse' to 'auto-start-reverse' |
| case kSVGMarkerOrientAuto: |
| case kSVGMarkerOrientAutoStartReverse: |
| OrientType()->SetEnumValue(from_orient_type); |
| return; |
| |
| // Regular from angle to angle animation, with all features like additive |
| // etc. |
| case kSVGMarkerOrientAngle: { |
| float animated_value = Value(); |
| SVGAngle* to_at_end_of_duration_angle = ToSVGAngle(to_at_end_of_duration); |
| |
| animation_element->AnimateAdditiveNumber( |
| percentage, repeat_count, from_angle->Value(), to_angle->Value(), |
| to_at_end_of_duration_angle->Value(), animated_value); |
| OrientType()->SetEnumValue(kSVGMarkerOrientAngle); |
| SetValue(animated_value); |
| } |
| return; |
| |
| // If the enumeration value is not angle or auto, its unknown. |
| default: |
| value_in_specified_units_ = 0; |
| OrientType()->SetEnumValue(kSVGMarkerOrientUnknown); |
| return; |
| } |
| } |
| |
| float SVGAngle::CalculateDistance(SVGPropertyBase* other, SVGElement*) { |
| return fabsf(Value() - ToSVGAngle(other)->Value()); |
| } |
| |
| void SVGAngle::OrientTypeChanged() { |
| if (OrientType()->EnumValue() == kSVGMarkerOrientAuto || |
| OrientType()->EnumValue() == kSVGMarkerOrientAutoStartReverse) { |
| unit_type_ = kSvgAngletypeUnspecified; |
| value_in_specified_units_ = 0; |
| } |
| } |
| |
| } // namespace blink |
