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use crate::{colors, BgDynColorDisplay, DynColor, FgDynColorDisplay};
use crate::{BgColorDisplay, Color, FgColorDisplay};
use core::fmt;
use core::marker::PhantomData;
#[cfg(doc)]
use crate::OwoColorize;
/// A wrapper type which applies both a foreground and background color
pub struct ComboColorDisplay<'a, Fg: Color, Bg: Color, T>(&'a T, PhantomData<(Fg, Bg)>);
/// Wrapper around a type which implements all the formatters the wrapped type does,
/// with the addition of changing the foreground and background color. Is not recommended
/// unless compile-time coloring is not an option.
pub struct ComboDynColorDisplay<'a, Fg: DynColor, Bg: DynColor, T>(&'a T, Fg, Bg);
macro_rules! impl_fmt_for_combo {
($($trait:path),* $(,)?) => {
$(
impl<'a, Fg: Color, Bg: Color, T: $trait> $trait for ComboColorDisplay<'a, Fg, Bg, T> {
#[inline(always)]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("\x1b[")?;
f.write_str(Fg::RAW_ANSI_FG)?;
f.write_str(";")?;
f.write_str(Bg::RAW_ANSI_BG)?;
f.write_str("m")?;
<T as $trait>::fmt(&self.0, f)?;
f.write_str("\x1b[0m")
}
}
)*
$(
impl<'a, Fg: DynColor, Bg: DynColor, T: $trait> $trait for ComboDynColorDisplay<'a, Fg, Bg, T> {
#[inline(always)]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("\x1b[")?;
self.1.fmt_raw_ansi_fg(f)?;
f.write_str(";")?;
self.2.fmt_raw_ansi_bg(f)?;
f.write_str("m")?;
<T as $trait>::fmt(&self.0, f)?;
f.write_str("\x1b[0m")
}
}
)*
};
}
impl_fmt_for_combo! {
fmt::Display,
fmt::Debug,
fmt::UpperHex,
fmt::LowerHex,
fmt::Binary,
fmt::UpperExp,
fmt::LowerExp,
fmt::Octal,
fmt::Pointer,
}
/// implement specialized color methods for FgColorDisplay BgColorDisplay, ComboColorDisplay
macro_rules! color_methods {
($(
#[$fg_meta:meta] #[$bg_meta:meta] $color:ident $fg_method:ident $bg_method:ident
),* $(,)?) => {
const _: () = (); // workaround for syntax highlighting bug
impl<'a, Fg, T> FgColorDisplay<'a, Fg, T>
where
Fg: Color,
{
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<NewFg: DynColor>(
self,
fg: NewFg,
) -> FgDynColorDisplay<'a, NewFg, T> {
FgDynColorDisplay(self.0, fg)
}
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<NewBg: DynColor>(
self,
bg: NewBg,
) -> ComboDynColorDisplay<'a, Fg::DynEquivelant, NewBg, T> {
ComboDynColorDisplay(self.0, Fg::DYN_EQUIVELANT, bg)
}
/// Set the foreground color generically
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "red foreground".fg::<Red>());
/// ```
pub fn fg<C: Color>(self) -> FgColorDisplay<'a, C, T> {
FgColorDisplay(self.0, PhantomData)
}
/// Set the background color generically.
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "black background".bg::<Black>());
/// ```
pub fn bg<C: Color>(self) -> ComboColorDisplay<'a, Fg, C, T> {
ComboColorDisplay(self.0, PhantomData)
}
$(
#[$fg_meta]
#[inline(always)]
pub fn $fg_method(self) -> FgColorDisplay<'a, colors::$color, T> {
FgColorDisplay(self.0, PhantomData)
}
#[$bg_meta]
#[inline(always)]
pub fn $bg_method(self) -> ComboColorDisplay<'a, Fg, colors::$color, T> {
ComboColorDisplay(self.0, PhantomData)
}
)*
}
const _: () = (); // workaround for syntax highlighting bug
impl<'a, Bg, T> BgColorDisplay<'a, Bg, T>
where
Bg: Color,
{
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<NewFg: DynColor>(
self,
fg: NewFg,
) -> ComboDynColorDisplay<'a, NewFg, Bg::DynEquivelant, T> {
ComboDynColorDisplay(self.0, fg, Bg::DYN_EQUIVELANT)
}
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<NewBg: DynColor>(
self,
bg: NewBg,
) -> BgDynColorDisplay<'a, NewBg, T> {
BgDynColorDisplay(self.0, bg)
}
/// Set the foreground color generically
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "red foreground".fg::<Red>());
/// ```
pub fn fg<C: Color>(self) -> ComboColorDisplay<'a, C, Bg, T> {
ComboColorDisplay(self.0, PhantomData)
}
/// Set the background color generically.
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "black background".bg::<Black>());
/// ```
pub fn bg<C: Color>(self) -> BgColorDisplay<'a, C, T> {
BgColorDisplay(self.0, PhantomData)
}
$(
#[$bg_meta]
#[inline(always)]
pub fn $bg_method(self) -> BgColorDisplay<'a, colors::$color, T> {
BgColorDisplay(self.0, PhantomData)
}
#[$fg_meta]
#[inline(always)]
pub fn $fg_method(self) -> ComboColorDisplay<'a, colors::$color, Bg, T> {
ComboColorDisplay(self.0, PhantomData)
}
)*
}
const _: () = (); // workaround for syntax highlighting bug
impl<'a, Fg, Bg, T> ComboColorDisplay<'a, Fg, Bg, T>
where
Fg: Color,
Bg: Color,
{
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<NewBg: DynColor>(
self,
bg: NewBg,
) -> ComboDynColorDisplay<'a, Fg::DynEquivelant, NewBg, T> {
ComboDynColorDisplay(self.0, Fg::DYN_EQUIVELANT, bg)
}
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<NewFg: DynColor>(
self,
fg: NewFg,
) -> ComboDynColorDisplay<'a, NewFg, Bg::DynEquivelant, T> {
ComboDynColorDisplay(self.0, fg, Bg::DYN_EQUIVELANT)
}
/// Set the foreground color generically
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "red foreground".fg::<Red>());
/// ```
pub fn fg<C: Color>(self) -> ComboColorDisplay<'a, C, Bg, T> {
ComboColorDisplay(self.0, PhantomData)
}
/// Set the background color generically.
///
/// ```rust
/// use owo_colors::{OwoColorize, colors::*};
///
/// println!("{}", "black background".bg::<Black>());
/// ```
pub fn bg<C: Color>(self) -> ComboColorDisplay<'a, Fg, C, T> {
ComboColorDisplay(self.0, PhantomData)
}
$(
#[$bg_meta]
#[inline(always)]
pub fn $bg_method(self) -> ComboColorDisplay<'a, Fg, colors::$color, T> {
ComboColorDisplay(self.0, PhantomData)
}
#[$fg_meta]
#[inline(always)]
pub fn $fg_method(self) -> ComboColorDisplay<'a, colors::$color, Bg, T> {
ComboColorDisplay(self.0, PhantomData)
}
)*
}
};
}
const _: () = (); // workaround for syntax highlighting bug
color_methods! {
/// Change the foreground color to black
/// Change the background color to black
Black black on_black,
/// Change the foreground color to red
/// Change the background color to red
Red red on_red,
/// Change the foreground color to green
/// Change the background color to green
Green green on_green,
/// Change the foreground color to yellow
/// Change the background color to yellow
Yellow yellow on_yellow,
/// Change the foreground color to blue
/// Change the background color to blue
Blue blue on_blue,
/// Change the foreground color to magenta
/// Change the background color to magenta
Magenta magenta on_magenta,
/// Change the foreground color to purple
/// Change the background color to purple
Magenta purple on_purple,
/// Change the foreground color to cyan
/// Change the background color to cyan
Cyan cyan on_cyan,
/// Change the foreground color to white
/// Change the background color to white
White white on_white,
/// Change the foreground color to bright black
/// Change the background color to bright black
BrightBlack bright_black on_bright_black,
/// Change the foreground color to bright red
/// Change the background color to bright red
BrightRed bright_red on_bright_red,
/// Change the foreground color to bright green
/// Change the background color to bright green
BrightGreen bright_green on_bright_green,
/// Change the foreground color to bright yellow
/// Change the background color to bright yellow
BrightYellow bright_yellow on_bright_yellow,
/// Change the foreground color to bright blue
/// Change the background color to bright blue
BrightBlue bright_blue on_bright_blue,
/// Change the foreground color to bright magenta
/// Change the background color to bright magenta
BrightMagenta bright_magenta on_bright_magenta,
/// Change the foreground color to bright purple
/// Change the background color to bright purple
BrightMagenta bright_purple on_bright_purple,
/// Change the foreground color to bright cyan
/// Change the background color to bright cyan
BrightCyan bright_cyan on_bright_cyan,
/// Change the foreground color to bright white
/// Change the background color to bright white
BrightWhite bright_white on_bright_white,
}
impl<'a, Fg: DynColor, T> FgDynColorDisplay<'a, Fg, T> {
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<Bg: DynColor>(self, bg: Bg) -> ComboDynColorDisplay<'a, Fg, Bg, T> {
let Self(inner, fg) = self;
ComboDynColorDisplay(inner, fg, bg)
}
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<NewFg: DynColor>(self, fg: NewFg) -> FgDynColorDisplay<'a, NewFg, T> {
let Self(inner, _) = self;
FgDynColorDisplay(inner, fg)
}
}
impl<'a, Bg: DynColor, T> BgDynColorDisplay<'a, Bg, T> {
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<NewBg: DynColor>(self, bg: NewBg) -> BgDynColorDisplay<'a, NewBg, T> {
let Self(inner, _) = self;
BgDynColorDisplay(inner, bg)
}
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<Fg: DynColor>(self, fg: Fg) -> ComboDynColorDisplay<'a, Fg, Bg, T> {
let Self(inner, bg) = self;
ComboDynColorDisplay(inner, fg, bg)
}
}
impl<'a, Fg: DynColor, Bg: DynColor, T> ComboDynColorDisplay<'a, Fg, Bg, T> {
/// Set the background color at runtime. Only use if you do not know what color to use at
/// compile-time. If the color is constant, use either [`OwoColorize::bg`](OwoColorize::bg) or
/// a color-specific method, such as [`OwoColorize::on_yellow`](OwoColorize::on_yellow),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "yellow background".on_color(AnsiColors::BrightYellow));
/// ```
pub fn on_color<NewBg: DynColor>(self, bg: NewBg) -> ComboDynColorDisplay<'a, Fg, NewBg, T> {
let Self(inner, fg, _) = self;
ComboDynColorDisplay(inner, fg, bg)
}
/// Set the foreground color at runtime. Only use if you do not know which color will be used at
/// compile-time. If the color is constant, use either [`OwoColorize::fg`](OwoColorize::fg) or
/// a color-specific method, such as [`OwoColorize::green`](OwoColorize::green),
///
/// ```rust
/// use owo_colors::{OwoColorize, AnsiColors};
///
/// println!("{}", "green".color(AnsiColors::Green));
/// ```
pub fn color<NewFg: DynColor>(self, fg: NewFg) -> ComboDynColorDisplay<'a, NewFg, Bg, T> {
let Self(inner, _, bg) = self;
ComboDynColorDisplay(inner, fg, bg)
}
}
#[cfg(test)]
mod tests {
use crate::{colors::*, AnsiColors, OwoColorize};
#[test]
fn fg_bg_combo() {
let test = "test".red().on_blue();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn bg_fg_combo() {
let test = "test".on_blue().red();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn fg_bg_dyn_combo() {
let test = "test".color(AnsiColors::Red).on_color(AnsiColors::Blue);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn bg_fg_dyn_combo() {
let test = "test".on_color(AnsiColors::Blue).color(AnsiColors::Red);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn fg_overide() {
let test = "test".green().yellow().red().on_blue();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn bg_overide() {
let test = "test".on_green().on_yellow().on_blue().red();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn multiple_overide() {
let test = "test"
.on_green()
.on_yellow()
.on_red()
.green()
.on_blue()
.red();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
let test = "test"
.color(AnsiColors::Blue)
.color(AnsiColors::White)
.on_color(AnsiColors::Black)
.color(AnsiColors::Red)
.on_color(AnsiColors::Blue);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
let test = "test"
.on_yellow()
.on_red()
.on_color(AnsiColors::Black)
.color(AnsiColors::Red)
.on_color(AnsiColors::Blue);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
let test = "test"
.yellow()
.red()
.color(AnsiColors::Red)
.on_color(AnsiColors::Black)
.on_color(AnsiColors::Blue);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
let test = "test"
.yellow()
.red()
.on_color(AnsiColors::Black)
.color(AnsiColors::Red)
.on_color(AnsiColors::Blue);
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn generic_multiple_override() {
use crate::colors::*;
let test = "test"
.bg::<Green>()
.bg::<Yellow>()
.bg::<Red>()
.fg::<Green>()
.bg::<Blue>()
.fg::<Red>();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn fg_bg_combo_generic() {
let test = "test".fg::<Red>().bg::<Blue>();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
#[test]
fn bg_fg_combo_generic() {
let test = "test".bg::<Blue>().fg::<Red>();
assert_eq!(test.to_string(), "\x1b[31;44mtest\x1b[0m");
}
}