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//! This example demonstrates using the [`Padding::colorize()`] function in several ways
//! to give a [`Table`] display a vibrant aesthetic.
//!
//! * 🚩 This example requires the `color` feature.
//!
//! * Note how the [`Color`] [setting](tabled::settings) is used to simplify creating
//! reusable themes for text, backgrounds, padded whitespace, and borders.
//!
//! * Note how a unique color can be set for each direction.
use tabled::{
settings::{
object::{Columns, Object, Rows, Segment},
style::BorderColor,
Alignment, Color, Format, Margin, MarginColor, Modify, Padding, PaddingColor, Style,
},
Table, Tabled,
};
#[derive(Tabled)]
#[tabled(rename_all = "PascalCase")]
struct Fundamental {
quantity: String,
value: String,
unit: String,
symbol: char,
}
impl Fundamental {
fn new(quantity: &str, symbol: char, value: &str, unit: &str) -> Self {
Self {
symbol,
quantity: quantity.to_string(),
value: value.to_string(),
unit: unit.to_string(),
}
}
}
fn main() {
// data source: https://www.britannica.com/science/physical-constant
#[rustfmt::skip]
let data = [
Fundamental::new("constant of gravitation", 'G', "6.67384 × 10⁻¹¹", "cubic metre per second squared per kilogram"),
Fundamental::new("speed of light (in a vacuum)", 'c', "2.99792458 × 10⁻⁸", "metres per second"),
Fundamental::new("Planck's constant", 'h', "6.626070040 × 10⁻³⁴", "joule second"),
Fundamental::new("Boltzmann constant", 'k', "1.38064852 × 10⁻²³", "joule per kelvin"),
Fundamental::new("Faraday constant", 'F', "9.648533289 × 10⁴", "coulombs per mole"),
];
let pane_color = Color::rgb_bg(220, 220, 220);
let border_color = Color::rgb_bg(200, 200, 220);
let data_color = Color::rgb_bg(200, 200, 220);
let header_settings = Modify::new(Rows::first())
.with(Padding::new(1, 1, 2, 2))
.with(PaddingColor::new(
Color::BG_GREEN,
Color::BG_YELLOW,
Color::BG_MAGENTA,
Color::BG_CYAN,
))
.with(Alignment::center())
.with(Padding::expand(true))
.with(Format::content(|s| {
(Color::FG_WHITE | Color::BG_BLACK).colorize(s)
}));
let data_settings = Modify::new(Rows::first().inverse())
.with(Alignment::center())
.with(Padding::expand(true))
.with(PaddingColor::filled(data_color.clone()));
let symbol_settings = Modify::new(Columns::single(1).not(Rows::first()))
.with(Format::content(|s| Color::BOLD.colorize(s)));
let unit_settings = Modify::new(Columns::single(3).not(Rows::first()))
.with(Format::content(|s| Color::UNDERLINE.colorize(s)));
let table = Table::new(data)
.with(Style::rounded())
.with(Margin::new(1, 2, 1, 1))
.with(MarginColor::filled(pane_color))
.with(BorderColor::filled(border_color))
.with(Modify::new(Segment::all()).with(data_color))
.with(header_settings)
.with(data_settings)
.with(symbol_settings)
.with(unit_settings)
.to_string();
println!("\n\n{table}\n\n");
}
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