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|
use once_cell::sync::Lazy;
use std::collections::HashMap;
use tui::style::{Color, Style};
use crate::utils::error;
// Approx, good enough for use (also Clippy gets mad if it's too long)
pub const STANDARD_FIRST_COLOUR: Color = Color::LightMagenta;
pub const STANDARD_SECOND_COLOUR: Color = Color::LightYellow;
pub const STANDARD_THIRD_COLOUR: Color = Color::LightCyan;
pub const STANDARD_FOURTH_COLOUR: Color = Color::LightGreen;
pub const STANDARD_HIGHLIGHT_COLOUR: Color = Color::LightBlue;
pub const AVG_COLOUR: Color = Color::Red;
pub const ALL_COLOUR: Color = Color::Green;
static COLOR_NAME_LOOKUP_TABLE: Lazy<HashMap<&'static str, Color>> = Lazy::new(|| {
[
("reset", Color::Reset),
("black", Color::Black),
("red", Color::Red),
("green", Color::Green),
("yellow", Color::Yellow),
("blue", Color::Blue),
("magenta", Color::Magenta),
("cyan", Color::Cyan),
("gray", Color::Gray),
("grey", Color::Gray),
("darkgray", Color::DarkGray),
("lightred", Color::LightRed),
("lightgreen", Color::LightGreen),
("lightyellow", Color::LightYellow),
("lightblue", Color::LightBlue),
("lightmagenta", Color::LightMagenta),
("lightcyan", Color::LightCyan),
("white", Color::White),
]
.iter()
.copied()
.collect()
});
pub fn convert_hex_to_color(hex: &str) -> error::Result<Color> {
fn hex_err(hex: &str) -> error::Result<u8> {
Err(
error::BottomError::ConfigError(format!(
"\"{}\" is an invalid hex colour. It must be a valid 7 character hex string of the (ie: \"#112233\")."
, hex))
)
}
fn convert_hex_to_rgb(hex: &str) -> error::Result<(u8, u8, u8)> {
let hex_components: Vec<char> = hex.chars().collect();
if hex_components.len() == 7 {
let mut r_string = hex_components[1].to_string();
r_string.push(hex_components[2]);
let mut g_string = hex_components[3].to_string();
g_string.push(hex_components[4]);
let mut b_string = hex_components[5].to_string();
b_string.push(hex_components[6]);
let r = u8::from_str_radix(&r_string, 16).or_else(|_err| hex_err(hex))?;
let g = u8::from_str_radix(&g_string, 16).or_else(|_err| hex_err(hex))?;
let b = u8::from_str_radix(&b_string, 16).or_else(|_err| hex_err(hex))?;
return Ok((r, g, b));
}
Err(error::BottomError::ConfigError(format!(
"\"{}\" is an invalid hex colour. It must be a 7 character string of the form \"#112233\".",
hex
)))
}
let rgb = convert_hex_to_rgb(hex)?;
Ok(Color::Rgb(rgb.0, rgb.1, rgb.2))
}
pub fn get_style_from_config(input_val: &str) -> error::Result<Style> {
if input_val.len() > 1 {
if &input_val[0..1] == "#" {
get_style_from_hex(input_val)
} else if input_val.contains(',') {
get_style_from_rgb(input_val)
} else {
get_style_from_color_name(input_val)
}
} else {
Err(error::BottomError::ConfigError(format!(
"value \"{}\" is not valid.",
input_val
)))
}
}
pub fn get_colour_from_config(input_val: &str) -> error::Result<Color> {
if input_val.len() > 1 {
if &input_val[0..1] == "#" {
convert_hex_to_color(input_val)
} else if input_val.contains(',') {
convert_rgb_to_color(input_val)
} else {
convert_name_to_color(input_val)
}
} else {
Err(error::BottomError::ConfigError(format!(
"value \"{}\" is not valid.",
input_val
)))
}
}
pub fn get_style_from_hex(hex: &str) -> error::Result<Style> {
Ok(Style::default().fg(convert_hex_to_color(hex)?))
}
fn convert_rgb_to_color(rgb_str: &str) -> error::Result<Color> {
let rgb_list = rgb_str.split(',').collect::<Vec<&str>>();
if rgb_list.len() != 3 {
return Err(error::BottomError::ConfigError(format!(
"value \"{}\" is an invalid RGB colour. It must be a comma separated value with 3 integers from 0 to 255 (ie: \"255, 0, 155\").",
rgb_str
)));
}
let rgb = rgb_list
.iter()
.filter_map(|val| {
if let Ok(res) = (*(*val)).to_string().trim().parse::<u8>() {
Some(res)
} else {
None
}
})
.collect::<Vec<_>>();
if rgb.len() == 3 {
Ok(Color::Rgb(rgb[0], rgb[1], rgb[2]))
} else {
Err(error::BottomError::ConfigError(format!(
"value \"{}\" contained invalid RGB values. It must be a comma separated value with 3 integers from 0 to 255 (ie: \"255, 0, 155\").",
rgb_str
)))
}
}
pub fn get_style_from_rgb(rgb_str: &str) -> error::Result<Style> {
Ok(Style::default().fg(convert_rgb_to_color(rgb_str)?))
}
fn convert_name_to_color(color_name: &str) -> error::Result<Color> {
let color = COLOR_NAME_LOOKUP_TABLE.get(color_name.to_lowercase().as_str());
if let Some(color) = color {
return Ok(*color);
}
Err(error::BottomError::ConfigError(format!(
"\"{}\" is an invalid named colour.
The following are supported strings:
+--------+------------+--------------+
| Reset | Magenta | LightYellow |
+--------+------------+--------------+
| Black | Cyan | LightBlue |
+--------+------------+--------------+
| Red | Gray | LightMagenta |
+--------+------------+--------------+
| Green | DarkGray | LightCyan |
+--------+------------+--------------+
| Yellow | LightRed | White |
+--------+------------+--------------+
| Blue | LightGreen | |
+--------+------------+--------------+
",
color_name
)))
}
pub fn get_style_from_color_name(color_name: &str) -> error::Result<Style> {
Ok(Style::default().fg(convert_name_to_color(color_name)?))
}
|
