dataLabelPosition method

Implementation

Offset dataLabelPosition(ChartElementParentData current, Size size) {
  final int segmentsLastIndex = segments.length - 1;
  final List<Offset> points =
      segments[segmentsLastIndex - current.dataPointIndex].points;
  final Rect region = _calculateSegmentRect(
    segments[segmentsLastIndex - current.dataPointIndex].points,
    segmentsLastIndex - current.dataPointIndex,
  );
  final List<Offset> connectorPoints = segments[0].points;
  final double connectorLength = _calculateConnectorLength(
    connectorPoints,
    dataLabelSettings,
  );

  final Offset insideLabelOffset =
      dataLabelSettings.labelPosition == ChartDataLabelPosition.inside
          ? Offset(
            region.left + region.width / 2 - size.width / 2,
            region.top + region.height / 2 - size.height / 2,
          )
          : Offset(
            (points[0].dx + points[1].dx) / 2 - size.width / 2,
            (points[0].dy + points[2].dy) / 2 - size.height / 2,
          );
  final double connectorLengthWithXValue =
      insideLabelOffset.dx + connectorLength + size.width / 2;
  final Offset outsideLabelOffset = Offset(
    (connectorLengthWithXValue +
                size.width +
                dataLabelSettings.margin.left +
                dataLabelSettings.margin.right >
            paintBounds.right)
        ? connectorLengthWithXValue -
            (percentToValue(explodeOffset, paintBounds.width)!)
        : connectorLengthWithXValue,
    insideLabelOffset.dy,
  );
  final Offset finalOffset =
      dataLabelSettings.labelPosition == ChartDataLabelPosition.inside
          ? insideLabelOffset
          : outsideLabelOffset;

  return finalOffset;
}