use std::io; use tui::backend::Backend; use tui::layout::{Constraint, Direction, Layout, Rect}; use tui::style::{Color, Modifier, Style}; use tui::widgets::canvas::{Canvas, Line, Map, MapResolution, Rectangle}; use tui::widgets::{ Axis, BarChart, Block, Borders, Chart, Dataset, Gauge, List, Marker, Paragraph, Row, SelectableList, Sparkline, Table, Tabs, Text, Widget, }; use tui::{Frame, Terminal}; use crate::demo::App; pub fn draw(terminal: &mut Terminal, app: &App) -> Result<(), io::Error> { terminal.draw(|mut f| { let chunks = Layout::default() .constraints([Constraint::Length(3), Constraint::Min(0)].as_ref()) .split(f.size()); Tabs::default() .block(Block::default().borders(Borders::ALL).title(app.title)) .titles(&app.tabs.titles) .style(Style::default().fg(Color::Green)) .highlight_style(Style::default().fg(Color::Yellow)) .select(app.tabs.index) .render(&mut f, chunks[0]); match app.tabs.index { 0 => draw_first_tab(&mut f, &app, chunks[1]), 1 => draw_second_tab(&mut f, &app, chunks[1]), _ => {} }; }) } fn draw_first_tab(f: &mut Frame, app: &App, area: Rect) where B: Backend, { let chunks = Layout::default() .constraints( [ Constraint::Length(7), Constraint::Min(7), Constraint::Length(7), ] .as_ref(), ) .split(area); draw_gauges(f, app, chunks[0]); draw_charts(f, app, chunks[1]); draw_text(f, chunks[2]); } fn draw_gauges(f: &mut Frame, app: &App, area: Rect) where B: Backend, { let chunks = Layout::default() .constraints([Constraint::Length(2), Constraint::Length(3)].as_ref()) .margin(1) .split(area); Block::default() .borders(Borders::ALL) .title("Graphs") .render(f, area); Gauge::default() .block(Block::default().title("Gauge:")) .style( Style::default() .fg(Color::Magenta) .bg(Color::Black) .modifier(Modifier::ITALIC | Modifier::BOLD), ) .label(&format!("{} / 100", app.progress)) .percent(app.progress) .render(f, chunks[0]); Sparkline::default() .block(Block::default().title("Sparkline:")) .style(Style::default().fg(Color::Green)) .data(&app.sparkline.points) .render(f, chunks[1]); } fn draw_charts(f: &mut Frame, app: &App, area: Rect) where B: Backend, { let constraints = if app.show_chart { vec![Constraint::Percentage(50), Constraint::Percentage(50)] } else { vec![Constraint::Percentage(100)] }; let chunks = Layout::default() .constraints(constraints) .direction(Direction::Horizontal) .split(area); { let chunks = Layout::default() .constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref()) .split(chunks[0]); { let chunks = Layout::default() .constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref()) .direction(Direction::Horizontal) .split(chunks[0]); SelectableList::default() .block(Block::default().borders(Borders::ALL).title("List")) .items(&app.tasks.items) .select(Some(app.tasks.selected)) .highlight_style(Style::default().fg(Color::Yellow).modifier(Modifier::BOLD)) .highlight_symbol(">") .render(f, chunks[0]); let info_style = Style::default().fg(Color::White); let warning_style = Style::default().fg(Color::Yellow); let error_style = Style::default().fg(Color::Magenta); let critical_style = Style::default().fg(Color::Red); let events = app.logs.items.iter().map(|&(evt, level)| { Text::styled( format!("{}: {}", level, evt), match level { "ERROR" => error_style, "CRITICAL" => critical_style, "WARNING" => warning_style, _ => info_style, }, ) }); List::new(events) .block(Block::default().borders(Borders::ALL).title("List")) .render(f, chunks[1]); } BarChart::default() .block(Block::default().borders(Borders::ALL).title("Bar chart")) .data(&app.barchart) .bar_width(3) .bar_gap(2) .value_style( Style::default() .fg(Color::Black) .bg(Color::Green) .modifier(Modifier::ITALIC), ) .label_style(Style::default().fg(Color::Yellow)) .style(Style::default().fg(Color::Green)) .render(f, chunks[1]); } if app.show_chart { Chart::default() .block( Block::default() .title("Chart") .title_style(Style::default().fg(Color::Cyan).modifier(Modifier::BOLD)) .borders(Borders::ALL), ) .x_axis( Axis::default() .title("X Axis") .style(Style::default().fg(Color::Gray)) .labels_style(Style::default().modifier(Modifier::ITALIC)) .bounds(app.signals.window) .labels(&[ &format!("{}", app.signals.window[0]), &format!("{}", (app.signals.window[0] + app.signals.window[1]) / 2.0), &format!("{}", app.signals.window[1]), ]), ) .y_axis( Axis::default() .title("Y Axis") .style(Style::default().fg(Color::Gray)) .labels_style(Style::default().modifier(Modifier::ITALIC)) .bounds([-20.0, 20.0]) .labels(&["-20", "0", "20"]), ) .datasets(&[ Dataset::default() .name("data2") .marker(Marker::Dot) .style(Style::default().fg(Color::Cyan)) .data(&app.signals.sin1.points), Dataset::default() .name("data3") .marker(Marker::Braille) .style(Style::default().fg(Color::Yellow)) .data(&app.signals.sin2.points), ]) .render(f, chunks[1]); } } fn draw_text(f: &mut Frame, area: Rect) where B: Backend, { let text = [ Text::raw("This is a paragraph with several lines. You can change style your text the way you want.\n\nFox example: "), Text::styled("under", Style::default().fg(Color::Red)), Text::raw(" "), Text::styled("the", Style::default().fg(Color::Green)), Text::raw(" "), Text::styled("rainbow", Style::default().fg(Color::Blue)), Text::raw(".\nOh and if you didn't "), Text::styled("notice", Style::default().modifier(Modifier::ITALIC)), Text::raw(" you can "), Text::styled("automatically", Style::default().modifier(Modifier::BOLD)), Text::raw(" "), Text::styled("wrap", Style::default().modifier(Modifier::REVERSED)), Text::raw(" your "), Text::styled("text", Style::default().modifier(Modifier::UNDERLINED)), Text::raw(".\nOne more thing is that it should display unicode characters: 10€") ]; Paragraph::new(text.iter()) .block( Block::default() .borders(Borders::ALL) .title("Footer") .title_style(Style::default().fg(Color::Magenta).modifier(Modifier::BOLD)), ) .wrap(true) .render(f, area); } fn draw_second_tab(f: &mut Frame, app: &App, area: Rect) where B: Backend, { let chunks = Layout::default() .constraints([Constraint::Percentage(30), Constraint::Percentage(70)].as_ref()) .direction(Direction::Horizontal) .split(area); let up_style = Style::default().fg(Color::Green); let failure_style = Style::default() .fg(Color::Red) .modifier(Modifier::RAPID_BLINK | Modifier::CROSSED_OUT); let header = ["Server", "Location", "Status"]; let rows = app.servers.iter().map(|s| { let style = if s.status == "Up" { up_style } else { failure_style }; Row::StyledData(vec![s.name, s.location, s.status].into_iter(), style) }); Table::new(header.into_iter(), rows) .block(Block::default().title("Servers").borders(Borders::ALL)) .header_style(Style::default().fg(Color::Yellow)) .widths(&[15, 15, 10]) .render(f, chunks[0]); Canvas::default() .block(Block::default().title("World").borders(Borders::ALL)) .paint(|ctx| { ctx.draw(&Map { color: Color::White, resolution: MapResolution::High, }); ctx.layer(); ctx.draw(&Rectangle { rect: Rect { x: 0, y: 30, width: 10, height: 10, }, color: Color::Yellow, }); for (i, s1) in app.servers.iter().enumerate() { for s2 in &app.servers[i + 1..] { ctx.draw(&Line { x1: s1.coords.1, y1: s1.coords.0, y2: s2.coords.0, x2: s2.coords.1, color: Color::Yellow, }); } } for server in &app.servers { let color = if server.status == "Up" { Color::Green } else { Color::Red }; ctx.print(server.coords.1, server.coords.0, "X", color); } }) .x_bounds([-180.0, 180.0]) .y_bounds([-90.0, 90.0]) .render(f, chunks[1]); }