tui-rs/examples/paragraph.rs

112 lines
3.1 KiB
Rust

extern crate failure;
extern crate termion;
extern crate tui;
#[allow(dead_code)]
mod util;
use std::io;
use termion::event::Key;
use termion::input::MouseTerminal;
use termion::raw::IntoRawMode;
use termion::screen::AlternateScreen;
use tui::backend::TermionBackend;
use tui::layout::{Alignment, Constraint, Direction, Layout, Rect};
use tui::style::{Color, Modifier, Style};
use tui::widgets::{Block, Paragraph, Text, Widget};
use tui::Terminal;
use util::event::{Event, Events};
struct App {
size: Rect,
}
impl Default for App {
fn default() -> App {
App {
size: Rect::default(),
}
}
}
fn main() -> Result<(), failure::Error> {
// Terminal initialization
let stdout = io::stdout().into_raw_mode()?;
let stdout = MouseTerminal::from(stdout);
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
terminal.hide_cursor()?;
let events = Events::new();
let mut app = App::default();
loop {
let size = terminal.size()?;
if size != app.size {
terminal.resize(size)?;
app.size = size;
}
let mut long_line: String = std::iter::repeat('X').take(size.width.into()).collect();
long_line.insert_str(0, "Very long line: ");
long_line.push('\n');
terminal.draw(|mut f| {
Block::default()
.style(Style::default().bg(Color::White))
.render(&mut f, size);
let chunks = Layout::default()
.direction(Direction::Vertical)
.margin(5)
.constraints(
[
Constraint::Percentage(30),
Constraint::Percentage(30),
Constraint::Percentage(30),
]
.as_ref(),
).split(size);
let text = [
Text::raw("This a line\n"),
Text::styled("This a line\n", Style::default().fg(Color::Red)),
Text::styled("This a line\n", Style::default().bg(Color::Blue)),
Text::styled(
"This a longer line\n",
Style::default().modifier(Modifier::CrossedOut),
),
Text::raw(&long_line),
Text::styled(
"This a line\n",
Style::default().fg(Color::Green).modifier(Modifier::Italic),
),
];
Paragraph::new(text.iter())
.alignment(Alignment::Left)
.render(&mut f, chunks[0]);
Paragraph::new(text.iter())
.alignment(Alignment::Center)
.wrap(true)
.render(&mut f, chunks[1]);
Paragraph::new(text.iter())
.alignment(Alignment::Right)
.wrap(true)
.render(&mut f, chunks[2]);
})?;
match events.next()? {
Event::Input(key) => if key == Key::Char('q') {
break;
},
_ => {}
}
}
Ok(())
}