enter method

@override void enter()

Enters full-screen mode (alternate screen + raw input).

Implementation

@override
void enter() {
  onEnter();
  // Alternate screen on, clear, cursor home, hide cursor.
  writeAnsi('\x1b[?1049h\x1b[2J\x1b[H\x1b[?25l');
  _front = null;
}