Vendor dependencies

Let's see how I like this workflow.

vendor/tui/examples/layout.rs

@@ -0,0 +1,70 @@
+use crossterm::{
+    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
+    execute,
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
+use std::{error::Error, io};
+use tui::{
+    backend::{Backend, CrosstermBackend},
+    layout::{Constraint, Direction, Layout},
+    widgets::{Block, Borders},
+    Frame, Terminal,
+};
+
+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 res = run_app(&mut terminal);
+
+    // 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>) -> io::Result<()> {
+    loop {
+        terminal.draw(|f| ui(f))?;
+
+        if let Event::Key(key) = event::read()? {
+            if let KeyCode::Char('q') = key.code {
+                return Ok(());
+            }
+        }
+    }
+}
+
+fn ui<B: Backend>(f: &mut Frame<B>) {
+    let chunks = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints(
+            [
+                Constraint::Percentage(10),
+                Constraint::Percentage(80),
+                Constraint::Percentage(10),
+            ]
+            .as_ref(),
+        )
+        .split(f.size());
+
+    let block = Block::default().title("Block").borders(Borders::ALL);
+    f.render_widget(block, chunks[0]);
+    let block = Block::default().title("Block 2").borders(Borders::ALL);
+    f.render_widget(block, chunks[2]);
+}