add first minimal example

examples/minimal.rs

@@ -0,0 +1,57 @@
+use crossterm::event::{DisableMouseCapture, EnableMouseCapture, Event, KeyCode};
+use crossterm::terminal::{
+    disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen,
+};
+use std::io;
+use tui::backend::CrosstermBackend;
+use tui::layout::{Constraint, Direction, Layout};
+use tui::widgets::{Block, Borders};
+use tui::Terminal;
+use tui_textarea::{Input, Key, TextArea};
+
+fn main() -> io::Result<()> {
+    let stdout = io::stdout();
+    let mut stdout = stdout.lock();
+    enable_raw_mode()?;
+    crossterm::execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
+    let backend = CrosstermBackend::new(stdout);
+    let mut term = Terminal::new(backend)?;
+
+    let mut textarea =
+        TextArea::default().block(Block::default().borders(Borders::ALL).title("EXAMPLE"));
+    let layout = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([Constraint::Min(1)].as_ref());
+
+    loop {
+        term.draw(|f| {
+            let chunks = layout.split(f.size());
+            let widget = textarea.widget();
+            f.render_widget(widget, chunks[0]);
+        })?;
+
+        if let Event::Key(key) = crossterm::event::read()? {
+            match key.code {
+                KeyCode::Char(c) => textarea.input(Input {
+                    key: Key::Char(c),
+                    ctrl: false,
+                }),
+                KeyCode::Backspace => textarea.input(Input {
+                    key: Key::Backspace,
+                    ctrl: false,
+                }),
+                KeyCode::Esc => break,
+                _ => {}
+            }
+        }
+    }
+
+    disable_raw_mode()?;
+    crossterm::execute!(
+        term.backend_mut(),
+        LeaveAlternateScreen,
+        DisableMouseCapture
+    )?;
+    term.show_cursor()?;
+    Ok(())
+}