| /* |
| * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * |
| * 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. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_LENGTH_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_LENGTH_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/css/css_numeric_literal_value.h" |
| #include "third_party/blink/renderer/core/css/css_primitive_value.h" |
| #include "third_party/blink/renderer/core/svg/properties/svg_listable_property.h" |
| #include "third_party/blink/renderer/core/svg/svg_length_context.h" |
| #include "third_party/blink/renderer/core/svg/svg_parsing_error.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/casting.h" |
| |
| namespace blink { |
| |
| class QualifiedName; |
| |
| class SVGLengthTearOff; |
| |
| class CORE_EXPORT SVGLength final : public SVGListablePropertyBase { |
| public: |
| typedef SVGLengthTearOff TearOffType; |
| |
| // Initial values for SVGLength properties. If adding a new initial value, |
| // keep the list sorted within the same unit. The table containing the actual |
| // values are in the .cc file. |
| enum class Initial { |
| kUnitlessZero, |
| kPercentMinus10, |
| kPercent0, |
| kPercent50, |
| kPercent100, |
| kPercent120, |
| kNumber3, |
| kNumValues |
| }; |
| static constexpr int kInitialValueBits = 3; |
| |
| explicit SVGLength(SVGLengthMode = SVGLengthMode::kOther); |
| SVGLength(Initial, SVGLengthMode); |
| SVGLength(const CSSPrimitiveValue&, SVGLengthMode); |
| |
| void SetInitial(unsigned); |
| |
| void Trace(Visitor*) const override; |
| |
| SVGLength* Clone() const; |
| SVGPropertyBase* CloneForAnimation(const String&) const override; |
| |
| CSSPrimitiveValue::UnitType NumericLiteralType() const { |
| DCHECK(value_->IsNumericLiteralValue()); |
| return To<CSSNumericLiteralValue>(*value_).GetType(); |
| } |
| |
| void SetUnitType(CSSPrimitiveValue::UnitType); |
| SVGLengthMode UnitMode() const { |
| return static_cast<SVGLengthMode>(unit_mode_); |
| } |
| |
| bool operator==(const SVGLength&) const; |
| bool operator!=(const SVGLength& other) const { return !operator==(other); } |
| |
| float Value(const SVGLengthContext&) const; |
| void SetValue(float, const SVGLengthContext&); |
| void SetValueAsNumber(float); |
| |
| float ValueInSpecifiedUnits() const { return value_->GetFloatValue(); } |
| void SetValueInSpecifiedUnits(float value); |
| |
| const CSSPrimitiveValue& AsCSSPrimitiveValue() const { return *value_; } |
| |
| // Resolves LengthTypePercentage into a normalized floating point number (full |
| // value is 1.0). |
| float ValueAsPercentage() const; |
| |
| // Scale the input value by this SVGLength. Higher precision than input * |
| // valueAsPercentage(). |
| float ScaleByPercentage(float) const; |
| |
| String ValueAsString() const override; |
| SVGParsingError SetValueAsString(const String&); |
| |
| void NewValueSpecifiedUnits(CSSPrimitiveValue::UnitType, |
| float value_in_specified_units); |
| void ConvertToSpecifiedUnits(CSSPrimitiveValue::UnitType, |
| const SVGLengthContext&); |
| |
| // Helper functions |
| bool IsRelative() const; |
| bool IsFontRelative() const { |
| // TODO(crbug.com/979895): This is the result of a refactoring, which might |
| // have revealed an existing bug with calculated lengths. Investigate. |
| return value_->IsNumericLiteralValue() && |
| To<CSSNumericLiteralValue>(*value_).IsFontRelativeLength(); |
| } |
| bool IsCalculated() const { return value_->IsCalculated(); } |
| bool IsPercentage() const { return value_->IsPercentage(); } |
| |
| bool IsNegativeNumericLiteral() const; |
| bool IsZero() const { return value_->GetFloatValue() == 0; } |
| |
| static SVGLengthMode LengthModeForAnimatedLengthAttribute( |
| const QualifiedName&); |
| static bool NegativeValuesForbiddenForAnimatedLengthAttribute( |
| const QualifiedName&); |
| |
| void Add(const SVGPropertyBase*, const SVGElement*) override; |
| void CalculateAnimatedValue( |
| const SMILAnimationEffectParameters&, |
| float percentage, |
| unsigned repeat_count, |
| const SVGPropertyBase* from, |
| const SVGPropertyBase* to, |
| const SVGPropertyBase* to_at_end_of_duration_value, |
| const SVGElement* context_element) override; |
| float CalculateDistance(const SVGPropertyBase* to, |
| const SVGElement* context_element) const override; |
| |
| static AnimatedPropertyType ClassType() { return kAnimatedLength; } |
| AnimatedPropertyType GetType() const override { return ClassType(); } |
| |
| private: |
| Member<const CSSPrimitiveValue> value_; |
| unsigned unit_mode_ : 2; |
| }; |
| |
| template <> |
| struct DowncastTraits<SVGLength> { |
| static bool AllowFrom(const SVGPropertyBase& value) { |
| return value.GetType() == SVGLength::ClassType(); |
| } |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_LENGTH_H_ |