onPaint method

@override void onPaint(Canvas canvas)

Draws segment in series bounds.

Implementation

@override
void onPaint(Canvas canvas) {
  if (fillPaint != null && _seriesRenderer._reAnimate ||
      (!(_seriesRenderer._chartState!._widgetNeedUpdate &&
          _oldSeriesRenderer != null &&
          !_seriesRenderer._chartState!._isLegendToggled))) {
    _path = Path();
    if (!_isTransposed &&
        _currentPoint!.lowerQuartile! > _currentPoint!.upperQuartile!) {
      final double temp = _upperY;
      _upperY = _lowerY;
      _lowerY = temp;
    }

    if (_seriesRenderer._chartState!._isLegendToggled) {
      animationFactor = 1;
    }
    if (_lowerY > _upperY) {
      _centersY = _upperY + ((_upperY - _lowerY).abs() / 2);
      _topRectY = _centersY - ((_centersY - _upperY).abs() * animationFactor);
      _bottomRectY =
          _centersY + ((_centersY - _lowerY).abs() * animationFactor);
    } else {
      _centersY = _lowerY + ((_lowerY - _upperY).abs() / 2);
      _topRectY = _centersY - ((_centersY - _upperY).abs() * animationFactor);
      _bottomRectY =
          _centersY + ((_centersY - _lowerY).abs() * animationFactor);
    }
    _topLineY = _topRectY - ((_topRectY - _maxY).abs() * animationFactor);
    _bottomLineY =
        _bottomRectY + ((_bottomRectY - _minY).abs() * animationFactor);

    _bottomLineY = _minY < _lowerY
        ? _bottomRectY + ((_upperY - _maxY).abs() * animationFactor)
        : _bottomLineY;

    _topLineY = _maxY > _upperY
        ? _topRectY - ((_lowerY - _minY).abs() * animationFactor)
        : _topLineY;

    if (_isTransposed) {
      if (_lowerX > _upperX) {
        _centersY = _upperX + ((_lowerX - _upperX).abs() / 2);
        _topRectY =
            _centersY + ((_centersY - _lowerX).abs() * animationFactor);
        _bottomRectY =
            _centersY - ((_centersY - _upperX).abs() * animationFactor);
      } else {
        _centersY = _lowerX + (_upperX - _lowerX).abs() / 2;
        _topRectY =
            _centersY + ((_centersY - _upperX).abs() * animationFactor);
        _bottomRectY =
            _centersY - ((_centersY - _lowerX).abs() * animationFactor);
      }
      _path.moveTo(_centerMax, _upperY);
      _path.lineTo(_centerMax, _lowerY);
      if (_centerMax < _upperX) {
        _path.moveTo(_bottomRectY, _maxY);
        _path.lineTo(
            _topRectY - ((_lowerX - _centerMax).abs() * animationFactor),
            _maxY);
      } else {
        _path.moveTo(_topRectY, _maxY);
        _path.lineTo(
            _topRectY + ((_upperX - _centerMax).abs() * animationFactor),
            _maxY);
      }
      _path.moveTo(_medianX, _upperY);
      _path.lineTo(_medianX, _lowerY);
      if (_centerMin > _lowerX) {
        _path.moveTo(_topRectY, _maxY);
        _path.lineTo(
            _bottomRectY + ((_upperX - _centerMin).abs() * animationFactor),
            _maxY);
      } else {
        _path.moveTo(_bottomRectY, _maxY);
        _path.lineTo(
            _bottomRectY - ((_lowerX - _centerMin).abs() * animationFactor),
            _maxY);
      }
      _path.moveTo(_centerMin, _upperY);
      _path.lineTo(_centerMin, _lowerY);
      if (_boxAndWhiskerSeries.showMean) {
        _drawMeanLine(
            canvas,
            Offset(_currentPoint!.centerMeanPoint!.y,
                _currentPoint!.centerMeanPoint!.x),
            Size(_series.markerSettings.width, _series.markerSettings.height),
            _isTransposed);
      }

      _lowerX == _upperX
          ? canvas.drawLine(
              Offset(_lowerX, _lowerY), Offset(_upperX, _upperY), fillPaint!)
          : _drawRectPath();
    } else {
      if (_currentPoint!.lowerQuartile! > _currentPoint!.upperQuartile!) {
        final double temp = _upperY;
        _upperY = _lowerY;
        _lowerY = temp;
      }
      _drawLine(canvas);
      if (_boxAndWhiskerSeries.showMean) {
        _drawMeanLine(
            canvas,
            Offset(_currentPoint!.centerMeanPoint!.x,
                _currentPoint!.centerMeanPoint!.y),
            Size(_series.markerSettings.width, _series.markerSettings.height),
            _isTransposed);
      }
      _lowerY == _upperY
          ? canvas.drawLine(
              Offset(_lowerX, _lowerY), Offset(_upperX, _upperY), fillPaint!)
          : _drawRectPath();
    }

    if (_series.dashArray[0] != 0 &&
        _series.dashArray[1] != 0 &&
        _series.animationDuration <= 0) {
      canvas.drawPath(_path, fillPaint!);
      _drawDashedLine(canvas, _series.dashArray, strokePaint!, _path);
    } else {
      canvas.drawPath(_path, fillPaint!);
      canvas.drawPath(_path, strokePaint!);
    }
    if (fillPaint!.style == PaintingStyle.fill) {
      if (_isTransposed) {
        if (_currentPoint!.lowerQuartile! > _currentPoint!.upperQuartile!) {
          _drawFillLine(canvas);
        }
        if (_boxAndWhiskerSeries.showMean) {
          _drawMeanLine(
              canvas,
              Offset(_currentPoint!.centerMeanPoint!.y,
                  _currentPoint!.centerMeanPoint!.x),
              Size(_series.markerSettings.width,
                  _series.markerSettings.height),
              _isTransposed);
        }
      } else {
        _drawLine(canvas);
        if (_boxAndWhiskerSeries.showMean) {
          _drawMeanLine(
              canvas,
              Offset(_currentPoint!.centerMeanPoint!.x,
                  _currentPoint!.centerMeanPoint!.y),
              Size(_series.markerSettings.width,
                  _series.markerSettings.height),
              _isTransposed);
        }
      }
    }
  } else if (!_seriesRenderer._chartState!._isLegendToggled) {
    final BoxAndWhiskerSegment currentSegment = _seriesRenderer
        ._segments[currentSegmentIndex!] as BoxAndWhiskerSegment;
    final BoxAndWhiskerSegment? oldSegment = (currentSegment
                ._oldSeriesRenderer!._segments.isNotEmpty &&
            currentSegment._oldSeriesRenderer!._segments[0]
                is BoxAndWhiskerSegment &&
            currentSegment._oldSeriesRenderer!._segments.length - 1 >=
                currentSegmentIndex!)
        ? currentSegment._oldSeriesRenderer!._segments[currentSegmentIndex!]
            as BoxAndWhiskerSegment?
        : null;
    _animateBoxSeries(
        _boxAndWhiskerSeries.showMean,
        Offset(_currentPoint!.centerMeanPoint!.x,
            _currentPoint!.centerMeanPoint!.y),
        Offset(_currentPoint!.centerMeanPoint!.y,
            _currentPoint!.centerMeanPoint!.x),
        Size(_series.markerSettings.width, _series.markerSettings.height),
        _max,
        _isTransposed,
        _currentPoint!.lowerQuartile!,
        _currentPoint!.upperQuartile!,
        _minY,
        _maxY,
        oldSegment?._minY,
        oldSegment?._maxY,
        _lowerX,
        _lowerY,
        _upperX,
        _upperY,
        _centerMin,
        _centerMax,
        oldSegment?._lowerX,
        oldSegment?._lowerY,
        oldSegment?._upperX,
        oldSegment?._upperY,
        oldSegment?._centerMin,
        oldSegment?._centerMax,
        _medianX,
        _medianY,
        animationFactor,
        fillPaint!,
        strokePaint!,
        canvas,
        _seriesRenderer);
  }
}