0049-Tui-创建控制台界面

环境

• Time 2022-08-08
• Rust 1.62.0
• Tui 0.18.0

前言

说明

参考：https://docs.rs/tui/latest/tui/index.html

目标

使用 tui-rs 和 crossterm 启动一个控制台的终端界面。

Cargo.toml

[package]
edition = "2021"
name = "game"
version = "0.1.0"

[dependencies]
anyhow = "*"
crossterm = "*"
tui = "*"

使用 crossterm 作为后端

use std::io;
use tui::{backend::CrosstermBackend, Terminal};

fn main() -> Result<(), io::Error> {
    
    let backend = CrosstermBackend::new(io::stdout());
    let _terminal = Terminal::new(backend)?;
    Ok(())
}

初始化终端

terminal::enable_raw_mode()?;

let mut backend = CrosstermBackend::new(std::io::stdout());
backend
    .execute(terminal::EnterAlternateScreen)?
    .execute(terminal::Clear(terminal::ClearType::All))?
    .hide_cursor()?;
let mut terminal = tui::Terminal::new(backend)?;

还原终端

terminal::disable_raw_mode()?;
terminal
    .backend_mut()
    .execute(terminal::Clear(terminal::ClearType::All))?
    .execute(terminal::LeaveAlternateScreen)?
    .show_cursor()
    .context("重置控制台失败")

终端显示方块

terminal.draw(|f| {
    let block = widgets::Block::default()
        .borders(widgets::Borders::ALL)
        .title("控制台方块");
    f.render_widget(block, f.size());
})?;

总结

使用 tui-rs 创建了一个终端程序，并且在终端中正常显示一个方块。

附录

源码

use anyhow::{Context, Result};
use crossterm::{terminal, ExecutableCommand};
use tui::backend::{Backend, CrosstermBackend};
use tui::widgets;

pub fn main() -> Result<()> {
    terminal::enable_raw_mode()?;

    let mut backend = CrosstermBackend::new(std::io::stdout());
    backend
        .execute(terminal::EnterAlternateScreen)?
        .execute(terminal::Clear(terminal::ClearType::All))?
        .hide_cursor()?;
    let mut terminal = tui::Terminal::new(backend)?;

    terminal.draw(|f| {
        let block = widgets::Block::default()
            .borders(widgets::Borders::ALL)
            .title("控制台方块");
        f.render_widget(block, f.size());
    })?;

    std::thread::sleep(std::time::Duration::from_secs(4));

    terminal::disable_raw_mode()?;
    terminal
        .backend_mut()
        .execute(terminal::Clear(terminal::ClearType::All))?
        .execute(terminal::LeaveAlternateScreen)?
        .show_cursor()
        .context("重置控制台失败")
}