paint method
Implementation
@override
String paint() {
final cached = _lastPaint;
if (cached != null) return cached;
final content = _child?.paint() ?? '';
final rendered = _renderContainerContent(
contentStr: content,
padding: padding,
width: size.width.toInt(),
height: size.height.toInt(),
);
return Layout.truncateLines(rendered, size.width.toInt(), ellipsis: '');
}