| /* |
| * 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 "third_party/blink/renderer/core/svg/svg_angle.h" |
| |
| #include "third_party/blink/renderer/core/svg/animation/smil_animation_effect_parameters.h" |
| #include "third_party/blink/renderer/core/svg/svg_enumeration_map.h" |
| #include "third_party/blink/renderer/core/svg/svg_parser_utilities.h" |
| #include "third_party/blink/renderer/platform/heap/heap.h" |
| #include "third_party/blink/renderer/platform/wtf/math_extras.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| template <> |
| const SVGEnumerationMap& GetEnumerationMap<SVGMarkerOrientType>() { |
| static const SVGEnumerationMap::Entry enum_items[] = { |
| {kSVGMarkerOrientAuto, "auto"}, |
| {kSVGMarkerOrientAngle, "angle"}, |
| {kSVGMarkerOrientAutoStartReverse, "auto-start-reverse"}, |
| }; |
| static const SVGEnumerationMap entries(enum_items, kSVGMarkerOrientAngle); |
| return entries; |
| } |
| |
| namespace { |
| |
| class SVGMarkerOrientEnumeration final : public SVGEnumeration { |
| public: |
| explicit SVGMarkerOrientEnumeration(SVGAngle* angle) |
| : SVGEnumeration(kSVGMarkerOrientAngle), angle_(angle) {} |
| |
| void Trace(Visitor* visitor) const override { |
| visitor->Trace(angle_); |
| SVGEnumeration::Trace(visitor); |
| } |
| |
| private: |
| void NotifyChange() override { |
| DCHECK(angle_); |
| angle_->OrientTypeChanged(); |
| } |
| |
| Member<SVGAngle> angle_; |
| }; |
| |
| } // namespace |
| |
| SVGAngle::SVGAngle() |
| : unit_type_(kSvgAngletypeUnspecified), |
| value_in_specified_units_(0), |
| orient_type_(MakeGarbageCollected<SVGMarkerOrientEnumeration>(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_(MakeGarbageCollected<SVGMarkerOrientEnumeration>(this)) { |
| orient_type_->SetEnumValue(orient_type); |
| } |
| |
| SVGAngle::~SVGAngle() = default; |
| |
| void SVGAngle::Trace(Visitor* visitor) const { |
| visitor->Trace(orient_type_); |
| SVGPropertyHelper<SVGAngle>::Trace(visitor); |
| } |
| |
| SVGAngle* SVGAngle::Clone() const { |
| return MakeGarbageCollected<SVGAngle>(unit_type_, value_in_specified_units_, |
| OrientTypeValue()); |
| } |
| |
| 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*) { |
| auto* other_angle = To<SVGAngle>(other); |
| |
| // Only respect by animations, if from and by are both specified in angles |
| // (and not, for example, 'auto'). |
| if (!IsNumeric() || !other_angle->IsNumeric()) |
| return; |
| |
| SetValue(Value() + other_angle->Value()); |
| } |
| |
| void SVGAngle::Assign(const SVGAngle& other) { |
| if (other.IsNumeric()) { |
| NewValueSpecifiedUnits(other.UnitType(), other.ValueInSpecifiedUnits()); |
| return; |
| } |
| value_in_specified_units_ = 0; |
| orient_type_->SetEnumValue(other.OrientTypeValue()); |
| } |
| |
| void SVGAngle::CalculateAnimatedValue( |
| const SMILAnimationEffectParameters& parameters, |
| float percentage, |
| unsigned repeat_count, |
| SVGPropertyBase* from, |
| SVGPropertyBase* to, |
| SVGPropertyBase* to_at_end_of_duration, |
| SVGElement*) { |
| auto* from_angle = To<SVGAngle>(from); |
| auto* to_angle = To<SVGAngle>(to); |
| |
| // We can only interpolate between two SVGAngles with orient-type 'angle', |
| // all other cases will use discrete animation. |
| if (!from_angle->IsNumeric() || !to_angle->IsNumeric()) { |
| Assign(percentage < 0.5f ? *from_angle : *to_angle); |
| return; |
| } |
| |
| float animated_value = Value(); |
| AnimateAdditiveNumber(parameters, percentage, repeat_count, |
| from_angle->Value(), to_angle->Value(), |
| To<SVGAngle>(to_at_end_of_duration)->Value(), |
| animated_value); |
| OrientType()->SetEnumValue(kSVGMarkerOrientAngle); |
| SetValue(animated_value); |
| } |
| |
| float SVGAngle::CalculateDistance(SVGPropertyBase* other, SVGElement*) { |
| return fabsf(Value() - To<SVGAngle>(other)->Value()); |
| } |
| |
| void SVGAngle::OrientTypeChanged() { |
| if (IsNumeric()) |
| return; |
| unit_type_ = kSvgAngletypeUnspecified; |
| value_in_specified_units_ = 0; |
| } |
| |
| SVGMarkerOrientType SVGAngle::OrientTypeValue() const { |
| return orient_type_->EnumValue<SVGMarkerOrientType>(); |
| } |
| |
| bool SVGAngle::IsNumeric() const { |
| return OrientTypeValue() == kSVGMarkerOrientAngle; |
| } |
| |
| } // namespace blink |
