1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

use core::ops::{Add, AddAssign, BitAnd, Sub, SubAssign};

#[cfg(feature = "approx")]
use approx::{AbsDiffEq, RelativeEq, UlpsEq};

use crate::white_point::D65;

use crate::{
    angle::{RealAngle, SignedAngle},
    bool_mask::LazySelect,
    clamp, clamp_assign, contrast_ratio,
    num::{
        self, Arithmetics, FromScalarArray, IntoScalarArray, MinMax, One, PartialCmp, Real, Zero,
    },
    stimulus::Stimulus,
    Alpha, Clamp, ClampAssign, FromColor, GetHue, IsWithinBounds, Lighten, LightenAssign, Mix,
    MixAssign, OklabHue, RelativeContrast, Saturate, SaturateAssign, SetHue, ShiftHue,
    ShiftHueAssign, WithHue, Xyz,
};

use super::Okhsl;

impl_is_within_bounds! {
    Okhsl {
        saturation => [Self::min_saturation(), Self::max_saturation()],
        lightness => [Self::min_lightness(), Self::max_lightness()]
    }
    where T: Stimulus
}

impl<T> Clamp for Okhsl<T>
where
    T: Stimulus + num::Clamp,
{
    #[inline]
    fn clamp(self) -> Self {
        Self::new(
            self.hue,
            clamp(
                self.saturation,
                Self::min_saturation(),
                Self::max_saturation(),
            ),
            clamp(self.lightness, Self::min_lightness(), Self::max_lightness()),
        )
    }
}

impl<T> ClampAssign for Okhsl<T>
where
    T: Stimulus + num::ClampAssign,
{
    #[inline]
    fn clamp_assign(&mut self) {
        clamp_assign(
            &mut self.saturation,
            Self::min_saturation(),
            Self::max_saturation(),
        );
        clamp_assign(
            &mut self.lightness,
            Self::min_lightness(),
            Self::max_lightness(),
        );
    }
}

impl_mix_hue!(Okhsl {
    saturation,
    lightness
});
impl_lighten!(Okhsl increase {lightness => [Self::min_lightness(), Self::max_lightness()]} other {hue, saturation}  where T: Stimulus);
impl_saturate!(Okhsl increase {saturation => [Self::min_saturation(), Self::max_saturation()]} other {hue, lightness}  where T: Stimulus);

impl<T> GetHue for Okhsl<T>
where
    T: Clone,
{
    type Hue = OklabHue<T>;

    #[inline]
    fn get_hue(&self) -> OklabHue<T> {
        self.hue.clone()
    }
}

impl<T, H> WithHue<H> for Okhsl<T>
where
    H: Into<OklabHue<T>>,
{
    #[inline]
    fn with_hue(mut self, hue: H) -> Self {
        self.hue = hue.into();
        self
    }
}

impl<T, H> SetHue<H> for Okhsl<T>
where
    H: Into<OklabHue<T>>,
{
    #[inline]
    fn set_hue(&mut self, hue: H) {
        self.hue = hue.into();
    }
}

impl<T> ShiftHue for Okhsl<T>
where
    T: Add<Output = T>,
{
    type Scalar = T;

    #[inline]
    fn shift_hue(mut self, amount: Self::Scalar) -> Self {
        self.hue = self.hue + amount;
        self
    }
}

impl<T> ShiftHueAssign for Okhsl<T>
where
    T: AddAssign,
{
    type Scalar = T;

    #[inline]
    fn shift_hue_assign(&mut self, amount: Self::Scalar) {
        self.hue += amount;
    }
}

impl_color_add!(Okhsl<T>, [hue, saturation, lightness]);
impl_color_sub!(Okhsl<T>, [hue, saturation, lightness]);

impl_array_casts!(Okhsl<T>, [T; 3]);
impl_simd_array_conversion_hue!(Okhsl, [saturation, lightness]);

impl_eq_hue!(Okhsl, OklabHue, [hue, saturation, lightness]);

impl<T> RelativeContrast for Okhsl<T>
where
    T: Real + Arithmetics + PartialCmp,
    T::Mask: LazySelect<T>,
    Xyz<D65, T>: FromColor<Self>,
{
    type Scalar = T;

    #[inline]
    fn get_contrast_ratio(self, other: Self) -> T {
        let xyz1 = Xyz::from_color(self);
        let xyz2 = Xyz::from_color(other);

        contrast_ratio(xyz1.y, xyz2.y)
    }
}