mirror of https://github.com/fdehau/tui-rs
feat: add initial support for crossterm
Florian Dehau
6 years ago
parent
3d63f9607f
commit
40bad7a718
@ -0,0 +1,50 @@
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extern crate crossterm;
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extern crate tui;
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use std::error::Error;
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use std::io;
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use tui::backend::CrosstermBackend;
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use tui::layout::{Constraint, Direction, Layout};
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use tui::style::{Color, Modifier, Style};
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use tui::widgets::{Block, Borders, Paragraph, Text, Widget};
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use tui::Terminal;
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fn main() {
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let mut terminal = Terminal::new(CrosstermBackend::new()).unwrap();
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terminal.clear().unwrap();
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terminal.hide_cursor().unwrap();
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draw(&mut terminal).unwrap();
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loop {
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{
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let input = crossterm::input(terminal.backend().screen());
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match input.read_char() {
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Ok(c) => if c == 'q' {
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break;
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},
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Err(e) => panic!("{}", e.description()),
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};
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}
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draw(&mut terminal).unwrap();
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}
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terminal.show_cursor().unwrap();
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}
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fn draw(t: &mut Terminal<CrosstermBackend>) -> io::Result<()> {
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let size = t.size()?;
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t.draw(|mut f| {
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let text = [
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Text::Data("It "),
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Text::StyledData("works", Style::default().fg(Color::Yellow)),
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];
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Paragraph::new(text.iter())
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.block(
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Block::default()
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.title("Crossterm Backend")
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.title_style(Style::default().fg(Color::Yellow).modifier(Modifier::Bold))
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.borders(Borders::ALL)
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.border_style(Style::default().fg(Color::Magenta)),
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)
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.render(&mut f, size);
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})
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}
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@ -0,0 +1,128 @@
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extern crate crossterm;
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use std::io;
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use backend::Backend;
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use buffer::Cell;
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use layout::Rect;
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use style::{Color, Modifier};
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pub struct CrosstermBackend {
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screen: crossterm::Screen,
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}
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impl CrosstermBackend {
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pub fn new() -> CrosstermBackend {
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CrosstermBackend {
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screen: crossterm::Screen::default(),
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}
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}
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pub fn screen(&self) -> &crossterm::Screen {
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&self.screen
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}
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}
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impl Backend for CrosstermBackend {
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fn clear(&mut self) -> io::Result<()> {
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let terminal = crossterm::terminal::terminal(&self.screen);
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terminal.clear(crossterm::terminal::ClearType::All);
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Ok(())
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}
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fn hide_cursor(&mut self) -> io::Result<()> {
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let cursor = crossterm::cursor(&self.screen);
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cursor.hide();
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Ok(())
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}
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fn show_cursor(&mut self) -> io::Result<()> {
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let cursor = crossterm::cursor(&self.screen);
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cursor.show();
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Ok(())
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}
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fn size(&self) -> io::Result<Rect> {
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let terminal = crossterm::terminal::terminal(&self.screen);
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let (width, height) = terminal.terminal_size();
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Ok(Rect {
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x: 0,
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y: 0,
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width,
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height,
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})
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}
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fn flush(&mut self) -> io::Result<()> {
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Ok(())
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}
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fn draw<'a, I>(&mut self, content: I) -> io::Result<()>
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where
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I: Iterator<Item = (u16, u16, &'a Cell)>,
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{
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let cursor = crossterm::cursor(&self.screen);
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let mut last_y = 0;
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let mut last_x = 0;
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for (x, y, cell) in content {
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if y != last_y || x != last_x + 1 {
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cursor.goto(x + 1, y + 1);
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}
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last_x = x;
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last_y = y;
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let mut s = crossterm::style(&cell.symbol);
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if let Some(color) = cell.style.fg.into() {
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s = s.with(color)
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}
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if let Some(color) = cell.style.bg.into() {
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s = s.on(color)
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}
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if let Some(attr) = cell.style.modifier.into() {
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s = s.attr(attr)
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}
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s.paint(&self.screen);
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}
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Ok(())
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}
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}
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impl From<Color> for Option<crossterm::Color> {
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fn from(color: Color) -> Option<crossterm::Color> {
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match color {
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Color::Reset => None,
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Color::Black => Some(crossterm::Color::Black),
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Color::Red => Some(crossterm::Color::DarkRed),
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Color::Green => Some(crossterm::Color::DarkGreen),
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Color::Yellow => Some(crossterm::Color::DarkYellow),
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Color::Blue => Some(crossterm::Color::DarkBlue),
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Color::Magenta => Some(crossterm::Color::DarkMagenta),
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Color::Cyan => Some(crossterm::Color::DarkCyan),
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Color::Gray => Some(crossterm::Color::Grey),
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Color::DarkGray => Some(crossterm::Color::Grey),
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Color::LightRed => Some(crossterm::Color::Red),
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Color::LightGreen => Some(crossterm::Color::Green),
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Color::LightBlue => Some(crossterm::Color::Blue),
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Color::LightYellow => Some(crossterm::Color::Yellow),
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Color::LightMagenta => Some(crossterm::Color::Magenta),
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Color::LightCyan => Some(crossterm::Color::Cyan),
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Color::White => Some(crossterm::Color::White),
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Color::Rgb(r, g, b) => Some(crossterm::Color::Rgb { r, g, b }),
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}
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}
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}
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impl From<Modifier> for Option<crossterm::Attribute> {
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fn from(modifier: Modifier) -> Option<crossterm::Attribute> {
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match modifier {
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Modifier::Blink => Some(crossterm::Attribute::SlowBlink),
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Modifier::Bold => Some(crossterm::Attribute::Bold),
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Modifier::CrossedOut => Some(crossterm::Attribute::CrossedOut),
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Modifier::Faint => Some(crossterm::Attribute::Dim),
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Modifier::Invert => Some(crossterm::Attribute::Reverse),
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Modifier::Italic => Some(crossterm::Attribute::Italic),
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Modifier::Underline => Some(crossterm::Attribute::Underlined),
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_ => None
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}
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}
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}
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