Calendar
Demonstrates the Calendar
widget.
git clone https://github.com/ratatui-org/ratatui.git --branch latestcd ratatuicargo run --example=calendar --features=crossterm,widget-calendar
//! # [Ratatui] Calendar example//!//! The latest version of this example is available in the [examples] folder in the repository.//!//! Please note that the examples are designed to be run against the `main` branch of the Github//! repository. This means that you may not be able to compile with the latest release version on//! crates.io, or the one that you have installed locally.//!//! See the [examples readme] for more information on finding examples that match the version of the//! library you are using.//!//! [Ratatui]: https://github.com/ratatui-org/ratatui//! [examples]: https://github.com/ratatui-org/ratatui/blob/main/examples//! [examples readme]: https://github.com/ratatui-org/ratatui/blob/main/examples/README.md
#![allow(clippy::wildcard_imports)]
use std::{error::Error, io};
use ratatui::{ backend::CrosstermBackend, crossterm::{ event::{self, Event, KeyCode}, execute, terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen}, }, layout::{Constraint, Layout, Rect}, style::{Color, Modifier, Style}, widgets::calendar::{CalendarEventStore, DateStyler, Monthly}, Frame, Terminal,};use time::{Date, Month, OffsetDateTime};
fn main() -> Result<(), Box<dyn Error>> { enable_raw_mode()?; let mut stdout = io::stdout(); execute!(stdout, EnterAlternateScreen)?; let backend = CrosstermBackend::new(stdout); let mut terminal = Terminal::new(backend)?;
loop { let _ = terminal.draw(draw);
if let Event::Key(key) = event::read()? { #[allow(clippy::single_match)] match key.code { KeyCode::Char(_) => { break; } _ => {} }; } }
disable_raw_mode()?; execute!(terminal.backend_mut(), LeaveAlternateScreen)?; terminal.show_cursor()?; Ok(())}
fn draw(f: &mut Frame) { let app_area = f.size();
let calarea = Rect { x: app_area.x + 1, y: app_area.y + 1, height: app_area.height - 1, width: app_area.width - 1, };
let mut start = OffsetDateTime::now_local() .unwrap() .date() .replace_month(Month::January) .unwrap() .replace_day(1) .unwrap();
let list = make_dates(start.year());
let rows = Layout::vertical([Constraint::Ratio(1, 3); 3]).split(calarea); let cols = rows.iter().flat_map(|row| { Layout::horizontal([Constraint::Ratio(1, 4); 4]) .split(*row) .to_vec() }); for col in cols { let cal = cals::get_cal(start.month(), start.year(), &list); f.render_widget(cal, col); start = start.replace_month(start.month().next()).unwrap(); }}
fn make_dates(current_year: i32) -> CalendarEventStore { let mut list = CalendarEventStore::today( Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Blue), );
// Holidays let holiday_style = Style::default() .fg(Color::Red) .add_modifier(Modifier::UNDERLINED);
// new year's list.add( Date::from_calendar_date(current_year, Month::January, 1).unwrap(), holiday_style, ); // next new_year's for December "show surrounding" list.add( Date::from_calendar_date(current_year + 1, Month::January, 1).unwrap(), holiday_style, ); // groundhog day list.add( Date::from_calendar_date(current_year, Month::February, 2).unwrap(), holiday_style, ); // april fool's list.add( Date::from_calendar_date(current_year, Month::April, 1).unwrap(), holiday_style, ); // earth day list.add( Date::from_calendar_date(current_year, Month::April, 22).unwrap(), holiday_style, ); // star wars day list.add( Date::from_calendar_date(current_year, Month::May, 4).unwrap(), holiday_style, ); // festivus list.add( Date::from_calendar_date(current_year, Month::December, 23).unwrap(), holiday_style, ); // new year's eve list.add( Date::from_calendar_date(current_year, Month::December, 31).unwrap(), holiday_style, );
// seasons let season_style = Style::default() .fg(Color::White) .bg(Color::Yellow) .add_modifier(Modifier::UNDERLINED); // spring equinox list.add( Date::from_calendar_date(current_year, Month::March, 22).unwrap(), season_style, ); // summer solstice list.add( Date::from_calendar_date(current_year, Month::June, 21).unwrap(), season_style, ); // fall equinox list.add( Date::from_calendar_date(current_year, Month::September, 22).unwrap(), season_style, ); list.add( Date::from_calendar_date(current_year, Month::December, 21).unwrap(), season_style, ); list}
mod cals { use super::*;
pub fn get_cal<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { match m { Month::May => example1(m, y, es), Month::June => example2(m, y, es), Month::July | Month::December => example3(m, y, es), Month::February => example4(m, y, es), Month::November => example5(m, y, es), _ => default(m, y, es), } }
fn default<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_month_header(Style::default()) .default_style(default_style) }
fn example1<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_surrounding(default_style) .default_style(default_style) .show_month_header(Style::default()) }
fn example2<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let header_style = Style::default() .add_modifier(Modifier::BOLD) .add_modifier(Modifier::DIM) .fg(Color::LightYellow);
let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_weekdays_header(header_style) .default_style(default_style) .show_month_header(Style::default()) }
fn example3<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let header_style = Style::default() .add_modifier(Modifier::BOLD) .fg(Color::Green);
let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_surrounding(Style::default().add_modifier(Modifier::DIM)) .show_weekdays_header(header_style) .default_style(default_style) .show_month_header(Style::default()) }
fn example4<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let header_style = Style::default() .add_modifier(Modifier::BOLD) .fg(Color::Green);
let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_weekdays_header(header_style) .default_style(default_style) }
fn example5<'a, DS: DateStyler>(m: Month, y: i32, es: DS) -> Monthly<'a, DS> { let header_style = Style::default() .add_modifier(Modifier::BOLD) .fg(Color::Green);
let default_style = Style::default() .add_modifier(Modifier::BOLD) .bg(Color::Rgb(50, 50, 50));
Monthly::new(Date::from_calendar_date(y, m, 1).unwrap(), es) .show_month_header(header_style) .default_style(default_style) }}