getFillPaint method Null safety

  1. @override
Paint getFillPaint()
override

Gets the color of the series.

Implementation

@override
Paint getFillPaint() {
  final Paint _fillPaint = Paint();
  assert(_series.opacity >= 0,
      'The opacity value of the stacked line series should be greater than or equal to 0.');
  assert(_series.opacity <= 1,
      'The opacity value of the stacked line series should be less than or equal to 1.');
  if (_color != null) {
    _fillPaint.color =
        _pointColorMapper ?? _color!.withOpacity(_series.opacity);
  }
  _fillPaint.strokeWidth = _strokeWidth!;
  _fillPaint.style = PaintingStyle.fill;
  _defaultFillColor = _fillPaint;
  return _fillPaint;
}