Coverage Report

Created: 2025-11-02 07:25

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/serenity/Userland/Libraries/LibWeb/CSS/StyleValues/EasingStyleValue.h
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/*
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 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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 * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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 * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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 * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
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 * Copyright (c) 2023, Ali Mohammad Pur <mpfard@serenityos.org>
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 *
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 * SPDX-License-Identifier: BSD-2-Clause
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 */
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#pragma once
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#include <LibWeb/CSS/CSSStyleValue.h>
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namespace Web::CSS {
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class EasingStyleValue final : public StyleValueWithDefaultOperators<EasingStyleValue> {
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public:
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    struct Linear {
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        struct Stop {
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            double offset;
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            Optional<double> position;
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            bool operator==(Stop const&) const = default;
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        };
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        Vector<Stop> stops;
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        bool operator==(Linear const&) const = default;
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    };
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    struct CubicBezier {
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        static CubicBezier ease();
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        static CubicBezier ease_in();
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        static CubicBezier ease_out();
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        static CubicBezier ease_in_out();
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        double x1;
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        double y1;
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        double x2;
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        double y2;
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        struct CachedSample {
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            double x;
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            double y;
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            double t;
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        };
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        mutable Vector<CachedSample, 64> m_cached_x_samples {};
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        bool operator==(CubicBezier const&) const;
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    };
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    struct Steps {
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        enum class Position {
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            JumpStart,
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            JumpEnd,
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            JumpNone,
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            JumpBoth,
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            Start,
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            End,
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        };
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        static Steps step_start();
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        static Steps step_end();
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        unsigned int number_of_intervals;
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        Position position { Position::End };
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        bool operator==(Steps const&) const = default;
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    };
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    struct Function : public Variant<Linear, CubicBezier, Steps> {
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        using Variant::Variant;
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        double evaluate_at(double input_progress, bool before_flag) const;
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        String to_string() const;
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    };
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    static ValueComparingNonnullRefPtr<EasingStyleValue> create(Function const& function)
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    {
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        return adopt_ref(*new (nothrow) EasingStyleValue(function));
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    }
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    virtual ~EasingStyleValue() override = default;
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    Function const& function() const { return m_function; }
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    virtual String to_string() const override { return m_function.to_string(); }
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    bool properties_equal(EasingStyleValue const& other) const { return m_function == other.m_function; }
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private:
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    EasingStyleValue(Function const& function)
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        : StyleValueWithDefaultOperators(Type::Easing)
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        , m_function(function)
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    {
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    }
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    Function m_function;
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};
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}