Cargo.toml

@@ -11,6 +11,8 @@ log = { version = "0.4.27", features = [] }
 dirs = "6.0.0"
 syntect = "5.2.0"
 structopt = "0.3.26"
+ratatui = "0.30.0"
+anyhow = "1.0.100"
 
 [build-dependencies]
 # The link_qt_object_files feature is required for statically linking Qt 6.

src/main.rs

@@ -42,7 +42,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         true => gui::run(root_path),
         false => match args.tui {
             // Open the TUI editor if requested, otherwise use the QML GUI by default.
-            true => tui::run(root_path),
+            true => Ok(tui::start(root_path)?),
             false => {
                 // Relaunch the CLIDE GUI in a separate process.
                 Command::new(std::env::current_exe()?)

src/tui.rs

@@ -1,6 +1,42 @@
+use anyhow::{Context, Result};
+use ratatui::{DefaultTerminal, Frame};
 use std::error::Error;
+use std::time::Duration;
+use ratatui::crossterm::event;
+use ratatui::crossterm::event::{Event, KeyCode};
+use ratatui::widgets::Paragraph;
 
-pub fn run(root_path: std::path::PathBuf) -> Result<(), Box<dyn Error>> {
+pub fn start(root_path: std::path::PathBuf) -> Result<()> {
     println!("Starting the TUI editor at {:?}", root_path);
+    let terminal = ratatui::init();
+    let app_result = run(terminal, root_path).context("Failed to start the TUI editor.");
+    ratatui::restore();
+    app_result
+}
+
+pub fn run(
+    mut terminal: DefaultTerminal,
+    root_path: std::path::PathBuf,
+) -> Result<()> {
+    loop {
+        terminal.draw(draw)?;
+        if should_quit()? {
+            break;
+        }
+    }
     Ok(())
 }
+fn should_quit() -> Result<bool> {
+    if event::poll(Duration::from_millis(250)).context("event poll failed")? {
+        if let Event::Key(key) = event::read().context("event read failed")? {
+            return Ok(KeyCode::Char('q') == key.code);
+        }
+    }
+    Ok(false)
+}
+
+fn draw(frame: &mut Frame) {
+    let greeting = Paragraph::new("Hello World! (press 'q' to quit)");
+    frame.render_widget(greeting, frame.area());
+}
+