line-chart-widget

linechartpainter.dart

const WeekDays = ["", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"];

class LineChartPainter extends CustomPainter {
  final List<Score> scores;
  late double _min, _max;
  late List<double> _Y;
  late List<String> _X;
  LineChartPainter(this.scores) {
    var min = double.maxFinite;
    var max = -double.maxFinite;
    scores.forEach((p) {
      min = min > p.value ? p.value : min;
      max = max < p.value ? p.value : max;
    });
    _min = min;
    _max = max;
    _Y = scores.map((p) => p.value).toList();
    _X = scores
        .map((p) => "${WeekDays[p.time.weekday]}\n${p.time.day}")
        .toList();
  }

  @override
  void paint(Canvas canvas, Size size) {}

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}