reui/
color.rs

1use palette::{encoding, Hsla, IntoColor, LinSrgb, LinSrgba, Srgb, Srgba};
2
3#[derive(Clone, Copy, Debug, PartialEq)]
4pub struct Color {
5    pub red: f32,
6    pub green: f32,
7    pub blue: f32,
8    pub alpha: f32,
9}
10
11impl From<Color> for [f32; 4] {
12    fn from(c: Color) -> [f32; 4] {
13        [c.red, c.green, c.blue, c.alpha]
14    }
15}
16
17impl From<Color> for [u8; 4] {
18    fn from(c: Color) -> [u8; 4] {
19        [
20            (c.red * 255.0) as u8,
21            (c.green * 255.0) as u8,
22            (c.blue * 255.0) as u8,
23            (c.alpha * 255.0) as u8,
24        ]
25    }
26}
27
28impl From<Hsla<encoding::Linear<encoding::Srgb>, f32>> for Color {
29    fn from(hsla: Hsla<encoding::Linear<encoding::Srgb>, f32>) -> Self {
30        let linear: LinSrgba<f32> = hsla.into_color();
31        Self::from(linear)
32    }
33}
34
35impl From<LinSrgb<f32>> for Color {
36    fn from(color: LinSrgb<f32>) -> Self {
37        Self::new(color.red, color.green, color.blue, 1.0)
38    }
39}
40
41impl From<LinSrgba<f32>> for Color {
42    fn from(LinSrgba { color, alpha }: LinSrgba<f32>) -> Self {
43        Self::new(color.red, color.green, color.blue, alpha)
44    }
45}
46
47impl From<Srgb<f32>> for Color {
48    fn from(color: Srgb<f32>) -> Self {
49        Self::from(Srgba { color, alpha: 1.0 })
50    }
51}
52
53impl From<Srgba<f32>> for Color {
54    fn from(color: Srgba<f32>) -> Self {
55        let linear: LinSrgba<f32> = color.into_linear();
56        Self::from(linear)
57    }
58}
59
60impl Color {
61    pub const TRANSPARENT: Self = Self::new(0.0, 0.0, 0.0, 0.0);
62    pub const BLACK: Self = Self::new(0.0, 0.0, 0.0, 1.0);
63    pub const WHITE: Self = Self::new(1.0, 1.0, 1.0, 1.0);
64    pub const RED: Self = Self::new(1.0, 0.0, 0.0, 1.0);
65    pub const GREEN: Self = Self::new(0.0, 1.0, 0.0, 1.0);
66    pub const BLUE: Self = Self::new(0.0, 0.0, 1.0, 1.0);
67
68    pub const fn new(red: f32, green: f32, blue: f32, alpha: f32) -> Self {
69        Self {
70            red,
71            green,
72            blue,
73            alpha,
74        }
75    }
76
77    #[inline]
78    pub fn bgra(color: u32) -> Self {
79        let [b, g, r, a] = color.to_le_bytes();
80        Self::new_srgba8(r, g, b, a)
81    }
82
83    #[inline]
84    pub fn new_srgba8(r: u8, g: u8, b: u8, a: u8) -> Self {
85        let color: Srgba<f32> = Srgba::from([r, g, b, a]).into_format();
86        Self::from(color)
87    }
88
89    /// Returns color value specified by hue, saturation and lightness and alpha.
90    /// HSL values are all in range [0..1], alpha in range [0..1]
91    pub fn hsla(hue: f32, saturation: f32, lightness: f32, alpha: f32) -> Self {
92        let components = (hue, saturation, lightness, alpha);
93        let hsla: Hsla<encoding::Linear<encoding::Srgb>, f32> = Hsla::from_components(components);
94        Self::from(hsla)
95    }
96}
reui/color.rs

reui/
color.rs
