adjust method

double adjust(double size, double delta)

Implementation

double adjust(double size, double delta) {
  validate();
  if (!size.isFinite || size <= 0 || !delta.isFinite) {
    throw ArgumentError(
      'Font-size adjustment requires a positive finite size and finite delta.',
    );
  }
  return (size + delta).clamp(minimum, maximum).toDouble();
}