ransid/
color.rs

1/// A color
2#[derive(Copy, Clone)]
3pub enum Color {
4    Ansi(u8),
5    TrueColor(u8, u8, u8),
6}
7
8impl Color {
9    pub fn as_rgb(&self) -> u32 {
10        let encode_rgb = |r: u8, g: u8, b: u8| -> u32 {
11            0xFF000000 | ((r as u32) << 16) | ((g as u32) << 8) | (b as u32)
12        };
13
14        match *self {
15            Color::TrueColor(r, g, b) => encode_rgb(r, g, b),
16            Color::Ansi(value) => match value {
17                0 => encode_rgb(0x00, 0x00, 0x00),
18                1 => encode_rgb(0x80, 0x00, 0x00),
19                2 => encode_rgb(0x00, 0x80, 0x00),
20                3 => encode_rgb(0x80, 0x80, 0x00),
21                4 => encode_rgb(0x00, 0x00, 0x80),
22                5 => encode_rgb(0x80, 0x00, 0x80),
23                6 => encode_rgb(0x00, 0x80, 0x80),
24                7 => encode_rgb(0xc0, 0xc0, 0xc0),
25                8 => encode_rgb(0x80, 0x80, 0x80),
26                9 => encode_rgb(0xff, 0x00, 0x00),
27                10 => encode_rgb(0x00, 0xff, 0x00),
28                11 => encode_rgb(0xff, 0xff, 0x00),
29                12 => encode_rgb(0x00, 0x00, 0xff),
30                13 => encode_rgb(0xff, 0x00, 0xff),
31                14 => encode_rgb(0x00, 0xff, 0xff),
32                15 => encode_rgb(0xff, 0xff, 0xff),
33                16 ... 231 => {
34                    let convert = |value: u8| -> u8 {
35                        match value {
36                            0 => 0,
37                            _ => value * 0x28 + 0x28
38                        }
39                    };
40
41                    let r = convert((value - 16) / 36 % 6);
42                    let g = convert((value - 16) / 6 % 6);
43                    let b = convert((value - 16) % 6);
44                    encode_rgb(r, g, b)
45                },
46                232 ... 255 => {
47                    let gray = (value - 232) * 10 + 8;
48                    encode_rgb(gray, gray, gray)
49                },
50                _ => encode_rgb(0, 0, 0)
51            }
52        }
53    }
54}
ransid/color.rs

ransid/
color.rs
