| extern crate ansi_term; |
| use ansi_term::Colour; |
| |
| // This example prints out the 256 colours. |
| // They're arranged like this: |
| // |
| // - 0 to 8 are the eight standard colours. |
| // - 9 to 15 are the eight bold colours. |
| // - 16 to 231 are six blocks of six-by-six colour squares. |
| // - 232 to 255 are shades of grey. |
| |
| fn main() { |
| |
| // First two lines |
| for c in 0..8 { |
| glow(c, c != 0); |
| print!(" "); |
| } |
| print!("\n"); |
| for c in 8..16 { |
| glow(c, c != 8); |
| print!(" "); |
| } |
| print!("\n\n"); |
| |
| // Six lines of the first three squares |
| for row in 0..6 { |
| for square in 0..3 { |
| for column in 0..6 { |
| glow(16 + square * 36 + row * 6 + column, row >= 3); |
| print!(" "); |
| } |
| |
| print!(" "); |
| } |
| |
| print!("\n"); |
| } |
| print!("\n"); |
| |
| // Six more lines of the other three squares |
| for row in 0..6 { |
| for square in 0..3 { |
| for column in 0..6 { |
| glow(124 + square * 36 + row * 6 + column, row >= 3); |
| print!(" "); |
| } |
| |
| print!(" "); |
| } |
| |
| print!("\n"); |
| } |
| print!("\n"); |
| |
| // The last greyscale lines |
| for c in 232..=243 { |
| glow(c, false); |
| print!(" "); |
| } |
| print!("\n"); |
| for c in 244..=255 { |
| glow(c, true); |
| print!(" "); |
| } |
| print!("\n"); |
| } |
| |
| fn glow(c: u8, light_bg: bool) { |
| let base = if light_bg { Colour::Black } else { Colour::White }; |
| let style = base.on(Colour::Fixed(c)); |
| print!("{}", style.paint(&format!(" {:3} ", c))); |
| } |