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feat: implement From trait for termion to Style related structs (#…
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…692)

* feat(termion): implement from termion color

* feat(termion): implement from termion style

* feat(termion): implement from termion `Bg` and `Fg`
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@Valentin271
Valentin271 committed Dec 16, 2023
1 parent f4c8de0 commit 5bf4f52
Showing 1 changed file with 223 additions and 1 deletion.
224 changes: 223 additions & 1 deletion src/backend/termion.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,13 @@ use std::{
io::{self, Write},
};

use termion::{color as tcolor, style as tstyle};

use crate::{
backend::{Backend, ClearType, WindowSize},
buffer::Cell,
prelude::Rect,
style::{Color, Modifier},
style::{Color, Modifier, Style},
};

/// A [`Backend`] implementation that uses [Termion] to render to the terminal.
Expand Down Expand Up @@ -275,6 +277,82 @@ impl fmt::Display for Bg {
}
}

macro_rules! from_termion_for_color {
($termion_color:ident, $color: ident) => {
impl From<tcolor::$termion_color> for Color {
fn from(_: tcolor::$termion_color) -> Self {
Color::$color
}
}

impl From<tcolor::Bg<tcolor::$termion_color>> for Style {
fn from(_: tcolor::Bg<tcolor::$termion_color>) -> Self {
Style::default().bg(Color::$color)
}
}

impl From<tcolor::Fg<tcolor::$termion_color>> for Style {
fn from(_: tcolor::Fg<tcolor::$termion_color>) -> Self {
Style::default().fg(Color::$color)
}
}
};
}

from_termion_for_color!(Reset, Reset);
from_termion_for_color!(Black, Black);
from_termion_for_color!(Red, Red);
from_termion_for_color!(Green, Green);
from_termion_for_color!(Yellow, Yellow);
from_termion_for_color!(Blue, Blue);
from_termion_for_color!(Magenta, Magenta);
from_termion_for_color!(Cyan, Cyan);
from_termion_for_color!(White, Gray);
from_termion_for_color!(LightBlack, DarkGray);
from_termion_for_color!(LightRed, LightRed);
from_termion_for_color!(LightGreen, LightGreen);
from_termion_for_color!(LightBlue, LightBlue);
from_termion_for_color!(LightYellow, LightYellow);
from_termion_for_color!(LightMagenta, LightMagenta);
from_termion_for_color!(LightCyan, LightCyan);
from_termion_for_color!(LightWhite, White);

impl From<tcolor::AnsiValue> for Color {
fn from(value: tcolor::AnsiValue) -> Self {
Color::Indexed(value.0)
}
}

impl From<tcolor::Bg<tcolor::AnsiValue>> for Style {
fn from(value: tcolor::Bg<tcolor::AnsiValue>) -> Self {
Style::default().bg(Color::Indexed(value.0 .0))
}
}

impl From<tcolor::Fg<tcolor::AnsiValue>> for Style {
fn from(value: tcolor::Fg<tcolor::AnsiValue>) -> Self {
Style::default().fg(Color::Indexed(value.0 .0))
}
}

impl From<tcolor::Rgb> for Color {
fn from(value: tcolor::Rgb) -> Self {
Color::Rgb(value.0, value.1, value.2)
}
}

impl From<tcolor::Bg<tcolor::Rgb>> for Style {
fn from(value: tcolor::Bg<tcolor::Rgb>) -> Self {
Style::default().bg(Color::Rgb(value.0 .0, value.0 .1, value.0 .2))
}
}

impl From<tcolor::Fg<tcolor::Rgb>> for Style {
fn from(value: tcolor::Fg<tcolor::Rgb>) -> Self {
Style::default().fg(Color::Rgb(value.0 .0, value.0 .1, value.0 .2))
}
}

impl fmt::Display for ModifierDiff {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let remove = self.from - self.to;
Expand Down Expand Up @@ -339,3 +417,147 @@ impl fmt::Display for ModifierDiff {
Ok(())
}
}

macro_rules! from_termion_for_modifier {
($termion_modifier:ident, $modifier: ident) => {
impl From<tstyle::$termion_modifier> for Modifier {
fn from(_: tstyle::$termion_modifier) -> Self {
Modifier::$modifier
}
}
};
}

from_termion_for_modifier!(Invert, REVERSED);
from_termion_for_modifier!(Bold, BOLD);
from_termion_for_modifier!(Italic, ITALIC);
from_termion_for_modifier!(Underline, UNDERLINED);
from_termion_for_modifier!(Faint, DIM);
from_termion_for_modifier!(CrossedOut, CROSSED_OUT);
from_termion_for_modifier!(Blink, SLOW_BLINK);

impl From<termion::style::Reset> for Modifier {
fn from(_: termion::style::Reset) -> Self {
Modifier::empty()
}
}

#[cfg(test)]
mod tests {
use super::*;
use crate::style::Stylize;

#[test]
fn from_termion_color() {
assert_eq!(Color::from(tcolor::Reset), Color::Reset);
assert_eq!(Color::from(tcolor::Black), Color::Black);
assert_eq!(Color::from(tcolor::Red), Color::Red);
assert_eq!(Color::from(tcolor::Green), Color::Green);
assert_eq!(Color::from(tcolor::Yellow), Color::Yellow);
assert_eq!(Color::from(tcolor::Blue), Color::Blue);
assert_eq!(Color::from(tcolor::Magenta), Color::Magenta);
assert_eq!(Color::from(tcolor::Cyan), Color::Cyan);
assert_eq!(Color::from(tcolor::White), Color::Gray);
assert_eq!(Color::from(tcolor::LightBlack), Color::DarkGray);
assert_eq!(Color::from(tcolor::LightRed), Color::LightRed);
assert_eq!(Color::from(tcolor::LightGreen), Color::LightGreen);
assert_eq!(Color::from(tcolor::LightBlue), Color::LightBlue);
assert_eq!(Color::from(tcolor::LightYellow), Color::LightYellow);
assert_eq!(Color::from(tcolor::LightMagenta), Color::LightMagenta);
assert_eq!(Color::from(tcolor::LightCyan), Color::LightCyan);
assert_eq!(Color::from(tcolor::LightWhite), Color::White);
assert_eq!(Color::from(tcolor::AnsiValue(31)), Color::Indexed(31));
assert_eq!(Color::from(tcolor::Rgb(1, 2, 3)), Color::Rgb(1, 2, 3));
}

#[test]
fn from_termion_bg() {
use tc::Bg;
use tcolor as tc;

assert_eq!(Style::from(Bg(tc::Reset)), Style::new().bg(Color::Reset));
assert_eq!(Style::from(Bg(tc::Black)), Style::new().on_black());
assert_eq!(Style::from(Bg(tc::Red)), Style::new().on_red());
assert_eq!(Style::from(Bg(tc::Green)), Style::new().on_green());
assert_eq!(Style::from(Bg(tc::Yellow)), Style::new().on_yellow());
assert_eq!(Style::from(Bg(tc::Blue)), Style::new().on_blue());
assert_eq!(Style::from(Bg(tc::Magenta)), Style::new().on_magenta());
assert_eq!(Style::from(Bg(tc::Cyan)), Style::new().on_cyan());
assert_eq!(Style::from(Bg(tc::White)), Style::new().on_gray());
assert_eq!(Style::from(Bg(tc::LightBlack)), Style::new().on_dark_gray());
assert_eq!(Style::from(Bg(tc::LightRed)), Style::new().on_light_red());
assert_eq!(
Style::from(Bg(tc::LightGreen)),
Style::new().on_light_green()
);
assert_eq!(Style::from(Bg(tc::LightBlue)), Style::new().on_light_blue());
assert_eq!(
Style::from(Bg(tc::LightYellow)),
Style::new().on_light_yellow()
);
assert_eq!(
Style::from(Bg(tc::LightMagenta)),
Style::new().on_light_magenta()
);
assert_eq!(Style::from(Bg(tc::LightCyan)), Style::new().on_light_cyan());
assert_eq!(Style::from(Bg(tc::LightWhite)), Style::new().on_white());
assert_eq!(
Style::from(Bg(tc::AnsiValue(31))),
Style::new().bg(Color::Indexed(31))
);
assert_eq!(
Style::from(Bg(tc::Rgb(1, 2, 3))),
Style::new().bg(Color::Rgb(1, 2, 3))
);
}

#[test]
fn from_termion_fg() {
use tc::Fg;
use tcolor as tc;

assert_eq!(Style::from(Fg(tc::Reset)), Style::new().fg(Color::Reset));
assert_eq!(Style::from(Fg(tc::Black)), Style::new().black());
assert_eq!(Style::from(Fg(tc::Red)), Style::new().red());
assert_eq!(Style::from(Fg(tc::Green)), Style::new().green());
assert_eq!(Style::from(Fg(tc::Yellow)), Style::new().yellow());
assert_eq!(Style::from(Fg(tc::Blue)), Style::default().blue());
assert_eq!(Style::from(Fg(tc::Magenta)), Style::default().magenta());
assert_eq!(Style::from(Fg(tc::Cyan)), Style::default().cyan());
assert_eq!(Style::from(Fg(tc::White)), Style::default().gray());
assert_eq!(Style::from(Fg(tc::LightBlack)), Style::new().dark_gray());
assert_eq!(Style::from(Fg(tc::LightRed)), Style::new().light_red());
assert_eq!(Style::from(Fg(tc::LightGreen)), Style::new().light_green());
assert_eq!(Style::from(Fg(tc::LightBlue)), Style::new().light_blue());
assert_eq!(
Style::from(Fg(tc::LightYellow)),
Style::new().light_yellow()
);
assert_eq!(
Style::from(Fg(tc::LightMagenta)),
Style::new().light_magenta()
);
assert_eq!(Style::from(Fg(tc::LightCyan)), Style::new().light_cyan());
assert_eq!(Style::from(Fg(tc::LightWhite)), Style::new().white());
assert_eq!(
Style::from(Fg(tc::AnsiValue(31))),
Style::default().fg(Color::Indexed(31))
);
assert_eq!(
Style::from(Fg(tc::Rgb(1, 2, 3))),
Style::default().fg(Color::Rgb(1, 2, 3))
);
}

#[test]
fn from_termion_style() {
assert_eq!(Modifier::from(tstyle::Invert), Modifier::REVERSED);
assert_eq!(Modifier::from(tstyle::Bold), Modifier::BOLD);
assert_eq!(Modifier::from(tstyle::Italic), Modifier::ITALIC);
assert_eq!(Modifier::from(tstyle::Underline), Modifier::UNDERLINED);
assert_eq!(Modifier::from(tstyle::Faint), Modifier::DIM);
assert_eq!(Modifier::from(tstyle::CrossedOut), Modifier::CROSSED_OUT);
assert_eq!(Modifier::from(tstyle::Blink), Modifier::SLOW_BLINK);
assert_eq!(Modifier::from(tstyle::Reset), Modifier::empty());
}
}

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