os_terminal/
color.rs

1use crate::palette::{Palette, DEFAULT_PALETTE_INDEX, PALETTE};
2
3pub type Rgb = (u8, u8, u8);
4
5pub struct ColorScheme {
6    pub foreground: Rgb,
7    pub background: Rgb,
8    pub ansi_colors: [Rgb; 256],
9}
10
11impl Default for ColorScheme {
12    fn default() -> Self {
13        Self::new(DEFAULT_PALETTE_INDEX)
14    }
15}
16
17impl ColorScheme {
18    pub fn new(palette_index: usize) -> Self {
19        PALETTE
20            .get(palette_index)
21            .unwrap_or(&PALETTE[DEFAULT_PALETTE_INDEX])
22            .into()
23    }
24}
25
26impl From<&Palette> for ColorScheme {
27    fn from(palette: &Palette) -> Self {
28        let mut colors = [(0, 0, 0); 256];
29        colors[..16].copy_from_slice(&palette.ansi_colors);
30
31        for index in 0..216 {
32            let r = index / 36;
33            let g = (index % 36) / 6;
34            let b = index % 6;
35            let scale = |c: usize| if c == 0 { 0 } else { (c * 40 + 55) as u8 };
36            colors[index + 16] = (scale(r), scale(g), scale(b));
37        }
38
39        for gray_level in 0..24 {
40            let index = 16 + 216 + gray_level;
41            let color_value = (gray_level * 10 + 8) as u8;
42            colors[index] = (color_value, color_value, color_value);
43        }
44
45        Self {
46            foreground: palette.foreground,
47            background: palette.background,
48            ansi_colors: colors,
49        }
50    }
51}
os_terminal/color.rs

os_terminal/
color.rs
