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use std::ops::{Index, IndexMut};
use log::trace;
use alacritty_terminal::ansi::NamedColor;
use alacritty_terminal::term::color::{Rgb, COUNT};
use crate::config::color::Colors;
/// Factor for automatic computation of dim colors.
pub const DIM_FACTOR: f32 = 0.66;
#[derive(Copy, Clone)]
pub struct List([Rgb; COUNT]);
impl<'a> From<&'a Colors> for List {
fn from(colors: &Colors) -> List {
// Type inference fails without this annotation.
let mut list = List([Rgb::default(); COUNT]);
list.fill_named(colors);
list.fill_cube(colors);
list.fill_gray_ramp(colors);
list
}
}
impl List {
pub fn fill_named(&mut self, colors: &Colors) {
// Normals.
self[NamedColor::Black] = colors.normal.black;
self[NamedColor::Red] = colors.normal.red;
self[NamedColor::Green] = colors.normal.green;
self[NamedColor::Yellow] = colors.normal.yellow;
self[NamedColor::Blue] = colors.normal.blue;
self[NamedColor::Magenta] = colors.normal.magenta;
self[NamedColor::Cyan] = colors.normal.cyan;
self[NamedColor::White] = colors.normal.white;
// Brights.
self[NamedColor::BrightBlack] = colors.bright.black;
self[NamedColor::BrightRed] = colors.bright.red;
self[NamedColor::BrightGreen] = colors.bright.green;
self[NamedColor::BrightYellow] = colors.bright.yellow;
self[NamedColor::BrightBlue] = colors.bright.blue;
self[NamedColor::BrightMagenta] = colors.bright.magenta;
self[NamedColor::BrightCyan] = colors.bright.cyan;
self[NamedColor::BrightWhite] = colors.bright.white;
self[NamedColor::BrightForeground] =
colors.primary.bright_foreground.unwrap_or(colors.primary.foreground);
// Foreground and background.
self[NamedColor::Foreground] = colors.primary.foreground;
self[NamedColor::Background] = colors.primary.background;
// Dims.
self[NamedColor::DimForeground] =
colors.primary.dim_foreground.unwrap_or(colors.primary.foreground * DIM_FACTOR);
match colors.dim {
Some(ref dim) => {
trace!("Using config-provided dim colors");
self[NamedColor::DimBlack] = dim.black;
self[NamedColor::DimRed] = dim.red;
self[NamedColor::DimGreen] = dim.green;
self[NamedColor::DimYellow] = dim.yellow;
self[NamedColor::DimBlue] = dim.blue;
self[NamedColor::DimMagenta] = dim.magenta;
self[NamedColor::DimCyan] = dim.cyan;
self[NamedColor::DimWhite] = dim.white;
},
None => {
trace!("Deriving dim colors from normal colors");
self[NamedColor::DimBlack] = colors.normal.black * DIM_FACTOR;
self[NamedColor::DimRed] = colors.normal.red * DIM_FACTOR;
self[NamedColor::DimGreen] = colors.normal.green * DIM_FACTOR;
self[NamedColor::DimYellow] = colors.normal.yellow * DIM_FACTOR;
self[NamedColor::DimBlue] = colors.normal.blue * DIM_FACTOR;
self[NamedColor::DimMagenta] = colors.normal.magenta * DIM_FACTOR;
self[NamedColor::DimCyan] = colors.normal.cyan * DIM_FACTOR;
self[NamedColor::DimWhite] = colors.normal.white * DIM_FACTOR;
},
}
}
pub fn fill_cube(&mut self, colors: &Colors) {
let mut index: usize = 16;
// Build colors.
for r in 0..6 {
for g in 0..6 {
for b in 0..6 {
// Override colors 16..232 with the config (if present).
if let Some(indexed_color) =
colors.indexed_colors.iter().find(|ic| ic.index() == index as u8)
{
self[index] = indexed_color.color;
} else {
self[index] = Rgb {
r: if r == 0 { 0 } else { r * 40 + 55 },
b: if b == 0 { 0 } else { b * 40 + 55 },
g: if g == 0 { 0 } else { g * 40 + 55 },
};
}
index += 1;
}
}
}
debug_assert!(index == 232);
}
pub fn fill_gray_ramp(&mut self, colors: &Colors) {
let mut index: usize = 232;
for i in 0..24 {
// Index of the color is number of named colors + number of cube colors + i.
let color_index = 16 + 216 + i;
// Override colors 232..256 with the config (if present).
if let Some(indexed_color) =
colors.indexed_colors.iter().find(|ic| ic.index() == color_index)
{
self[index] = indexed_color.color;
index += 1;
continue;
}
let value = i * 10 + 8;
self[index] = Rgb { r: value, g: value, b: value };
index += 1;
}
debug_assert!(index == 256);
}
}
impl Index<usize> for List {
type Output = Rgb;
#[inline]
fn index(&self, idx: usize) -> &Self::Output {
&self.0[idx]
}
}
impl IndexMut<usize> for List {
#[inline]
fn index_mut(&mut self, idx: usize) -> &mut Self::Output {
&mut self.0[idx]
}
}
impl Index<NamedColor> for List {
type Output = Rgb;
#[inline]
fn index(&self, idx: NamedColor) -> &Self::Output {
&self.0[idx as usize]
}
}
impl IndexMut<NamedColor> for List {
#[inline]
fn index_mut(&mut self, idx: NamedColor) -> &mut Self::Output {
&mut self.0[idx as usize]
}
}
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