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|
use crossterm::{
event::{
self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEvent, KeyModifiers,
},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use std::{error::Error, io};
use tui::{
backend::{Backend, CrosstermBackend},
layout::{Constraint, Direction, Layout},
style::{Color, Modifier, Style},
text::{Span, Spans},
widgets::{Block, Borders, Tabs},
Frame, Terminal,
};
struct App<'a> {
pub titles: Vec<&'a str>,
pub index: usize,
}
impl<'a> App<'a> {
fn new() -> App<'a> {
App {
titles: vec!["constants", "compressor", "power"],
index: 0,
}
}
pub fn next(&mut self) {
self.index = (self.index + 1) % self.titles.len();
}
pub fn previous(&mut self) {
if self.index > 0 {
self.index -= 1;
} else {
self.index = self.titles.len() - 1;
}
}
}
fn main() -> Result<(), Box<dyn 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)?;
// create app and run it
let app = App::new();
let res = run_app(&mut terminal, app);
// restore terminal
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
if let Err(err) = res {
println!("{:?}", err)
}
Ok(())
}
fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Result<()> {
loop {
terminal.draw(|f| ui(f, &app))?;
if let Event::Key(key) = event::read()? {
match key {
KeyEvent {
modifiers: KeyModifiers::CONTROL,
code,
} => match code {
KeyCode::Char('h') => app.previous(),
KeyCode::Char('l') => app.next(),
KeyCode::Char('c') => return Ok(()),
_ => {}
},
KeyEvent {
modifiers: KeyModifiers::NONE,
code,
} => match code {
KeyCode::Char('q') => return Ok(()),
KeyCode::Esc => return Ok(()),
_ => {}
},
_ => {}
}
}
}
}
fn ui<B: Backend>(f: &mut Frame<B>, app: &App) {
let size = f.size();
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints(
[
Constraint::Length(3), // tabs
Constraint::Percentage(45), // inputs
Constraint::Percentage(45), // graph
]
.as_ref(),
)
.split(size);
let block = Block::default().style(Style::default().bg(Color::Black).fg(Color::White));
f.render_widget(block, size);
let titles = app
.titles
.iter()
.map(|t| Spans::from(Span::styled(*t, Style::default().fg(Color::Green))))
.collect();
let tabs = Tabs::new(titles)
.block(Block::default().borders(Borders::ALL).title("Tabs"))
.select(app.index)
.style(Style::default().fg(Color::Cyan))
.highlight_style(
Style::default()
.add_modifier(Modifier::BOLD)
.bg(Color::Black),
);
f.render_widget(tabs, chunks[0]);
let (inputs, graph) = match app.index {
0 => (
Block::default().title("Constants").borders(Borders::ALL),
Block::default(),
),
1 => (
Block::default().title("Compressor").borders(Borders::ALL),
Block::default()
.title("Compressor Graph")
.borders(Borders::ALL),
),
2 => (
Block::default().title("Power").borders(Borders::ALL),
Block::default().title("Power Graph").borders(Borders::ALL),
),
_ => unreachable!(),
};
f.render_widget(inputs, chunks[1]);
f.render_widget(graph, chunks[2]);
}
|