drawChart method

@override void drawChart(CandleEntity lastPoint, CandleEntity curPoint, double lastX, double curX, GetYFunction getY, Canvas canvas, KChartColors chartColors,)

Implementation

@override
void drawChart(CandleEntity lastPoint, CandleEntity curPoint, double lastX,
    double curX, GetYFunction getY, Canvas canvas, KChartColors chartColors) {
  if (lastPoint.boll == null || curPoint.boll == null) return;
  final List<Offset> _positionLi = [];

  if (curPoint.boll!.up != null && lastPoint.boll!.up != null) {
    _positionLi.add(Offset(curX, getY(curPoint.boll!.up!))); //0
    _positionLi.add(Offset(lastX, getY(lastPoint.boll!.up!))); //1
    /// UB
    canvas.drawLine(
      _positionLi[0],
      _positionLi[1],
      _linePaint..color = indicatorStyle.ubColor,
    );
  }

  if (curPoint.boll!.dn != null && lastPoint.boll!.dn != null) {
    _positionLi.add(Offset(lastX, getY(lastPoint.boll!.dn!))); //2
    _positionLi.add(Offset(curX, getY(curPoint.boll!.dn!))); //3

    /// LB
    canvas.drawLine(
      _positionLi[2],
      _positionLi[3],
      _linePaint..color = indicatorStyle.lbColor,
    );
  }

  if (_positionLi.length == 4) {
    Path _fillPath = Path()
      ..moveTo(_positionLi[0].dx, _positionLi[0].dy)
      ..lineTo(_positionLi[1].dx, _positionLi[1].dy)
      ..lineTo(_positionLi[2].dx, _positionLi[2].dy)
      ..lineTo(_positionLi[3].dx, _positionLi[3].dy)
      ..close();

    canvas.drawPath(_fillPath, _fillPaint);
  }

  if (curPoint.boll!.mid != null && lastPoint.boll!.mid != null) {
    /// BOLL
    canvas.drawLine(
      Offset(curX, getY(curPoint.boll!.mid!)),
      Offset(lastX, getY(lastPoint.boll!.mid!)),
      _linePaint..color = indicatorStyle.bollColor,
    );
  }
}