draw method

Implementation

@override
void draw(Canvas canvas) {
  final textPainter = TextPainter(
    text: TextSpan(
      text: text,
      style: TextStyle(color: color, fontSize: 14.0),
    ),
    textDirection: TextDirection.ltr,
  )..layout(maxWidth: rect.width);

  double dx = rect.left;
  if (halign == 'center') {
    dx += (rect.width - textPainter.width) / 2;
  } else if (halign == 'right') {
    dx += rect.width - textPainter.width;
  }

  double dy = rect.top;
  if (valign == 'center') {
    dy += (rect.height - textPainter.height) / 2;
  } else if (valign == 'bottom') {
    dy += rect.height - textPainter.height;
  }

  textPainter.paint(canvas, Offset(dx, dy));
}