coinlive 0.2.5

Interactive command line tool that displays live cryptocurrency prices and simple historical price charts.
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/// The about page
use tui::{
    style::{Style, Color, Modifier},
    widgets::{Paragraph},
    layout::{Alignment, Rect, Layout, Direction, Constraint},
    text::{Span, Spans},
    backend::Backend,
    terminal::Frame,
};
use version::version;

/// The about paragraph
fn about<'a>() -> (Paragraph<'a>, u16) {
    let txt = vec![
        Spans::from(Span::styled("     ####    #####    ######  ##   ##  ####      ######  ##   ##  #######  ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("    ##  ##  ### ###     ##    ###  ##   ##         ##    ##   ##   ##   #  ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("   ##       ##   ##     ##    #### ##   ##         ##    ##   ##   ##      ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("   ##       ##   ##     ##    #######   ##         ##     ## ##    ####    ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("   ##       ##   ##     ##    ## ####   ##         ##     ## ##    ##      ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("    ##  ##  ### ###     ##    ##  ###   ##  ##     ##      ###     ##   #  ", Style::default().fg(Color::LightCyan))),
        Spans::from(Span::styled("     ####    #####    ######  ##   ##  #######   ######    ###    #######  ", Style::default().fg(Color::LightCyan))),
        Spans::from(Vec::new()),
        Spans::from(Vec::new()),
        Spans::from(Span::styled("Live cryptocurrency prices CLI",
                                 Style::default().fg(Color::LightCyan).add_modifier(Modifier::ITALIC))),
        Spans::from(Vec::new()),
        Spans::from(Vec::new()),
        Spans::from(Span::styled("(c) Mayer Analytics, GPL-3.0", Style::default().fg(Color::Red))),
        Spans::from(Vec::new()),
        Spans::from(Span::styled("https://github.com/mayeranalytics/coinlive", Style::default().fg(Color::Green))),
        Spans::from(Vec::new()),
        Spans::from(Span::styled(format!("Version {}", version!()), Style::default().fg(Color::Gray))),
    ];
    let h = txt.len() as u16;
    let p = Paragraph::new(txt)
        .style(Style::default().fg(Color::LightCyan))
        .alignment(Alignment::Center);
    (p, h)
}

/// Draw the message bar at the bottom
pub fn draw_about<B: Backend>(f: &mut Frame<B>, area: Rect) {
    let about = about();
    let h = about.1; let about = about.0;
    let vert_space = if area.height > h { (area.height - h)/2 } else { 0 }; 
    let ver_chunk = Layout::default()
        .direction(Direction::Vertical)
        .constraints(
            [ Constraint::Length(vert_space)
            , Constraint::Min(0)
            , Constraint::Max(0)
            ].as_ref()
        )
        .split(area)[1];
    f.render_widget(about, ver_chunk);
}