crock/src/main.rs

use ratatui::crossterm::{
    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyModifiers},
    execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{
    backend::CrosstermBackend,
    widgets::{Block, Borders},
    Terminal,
};
use std::io;

const TITLE: &str = "Crock";

fn main() -> Result<(), io::Error> {
    // setup terminal
    enable_raw_mode()?;
    let mut stdout = io::stdout();
    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
    let backend = CrosstermBackend::new(stdout);
    let mut terminal = Terminal::new(backend)?;

    loop {
        terminal.draw(|f| {
            let size = f.size();
            let block = Block::default().title(TITLE).borders(Borders::ALL);
            let inner = block.inner(size);
            f.render_widget(block, size);
            let w = ratatui::widgets::Paragraph::new(format!("{}", chrono::Utc::now()));
            f.render_widget(w, inner);
        })?;
        if let Event::Key(key) = event::read()? {
            if key.code == KeyCode::Char('q')
                || key.code == KeyCode::Esc
                || (key.modifiers.contains(KeyModifiers::CONTROL) && key.code == KeyCode::Char('c'))
            {
                break;
            }
        }
    }

    // restore terminal
    disable_raw_mode()?;
    execute!(
        terminal.backend_mut(),
        LeaveAlternateScreen,
        DisableMouseCapture
    )?;
    terminal.show_cursor()?;

    Ok(())
}