drawHighlighted method

@override void drawHighlighted(Canvas c, List<Highlight>? indices)

Draws all highlight indicators for the values that are currently highlighted.

@param c @param indices the highlighted values

Implementation

@override
void drawHighlighted(Canvas c, List<Highlight>? indices) {
  BubbleData? bubbleData = _provider!.getBubbleData();

  double phaseY = animator!.getPhaseY();

  for (Highlight high in indices!) {
    IBubbleDataSet? set =
        bubbleData!.getDataSetByIndex(high.dataSetIndex ?? 0);

    if (set == null || !set.isHighlightEnabled()) continue;

    final BubbleEntry entry =
        set.getEntryForXValue2(high.x ?? 0, high.y ?? 0)!;

    if (entry.y != high.y) continue;

    if (!isInBoundsX(entry, set)) continue;

    Transformer trans = _provider!.getTransformer(set.getAxisDependency())!;

    sizeBuffer[0] = 0;
    sizeBuffer[2] = 1;

    trans.pointValuesToPixel(sizeBuffer);

    bool normalizeSize = set.isNormalizeSizeEnabled();

    // calcualte the full width of 1 step on the x-axis
    final double maxBubbleWidth = (sizeBuffer[2]! - sizeBuffer[0]!).abs();
    final double maxBubbleHeight =
        (viewPortHandler!.contentBottom() - viewPortHandler!.contentTop())
            .abs();
    final double referenceSize = min(maxBubbleHeight, maxBubbleWidth);

    pointBuffer[0] = entry.x;
    pointBuffer[1] = entry.y * phaseY;
    trans.pointValuesToPixel(pointBuffer);

    high.setDraw(pointBuffer[0], pointBuffer[1]);

    double shapeHalf = getShapeSize(
            entry.size, set.getMaxSize(), referenceSize, normalizeSize) /
        2;

    if (!viewPortHandler!.isInBoundsTop(pointBuffer[1]! + shapeHalf) ||
        !viewPortHandler!.isInBoundsBottom(pointBuffer[1]! - shapeHalf)) {
      continue;
    }

    if (!viewPortHandler!.isInBoundsLeft(pointBuffer[0]! + shapeHalf)) {
      continue;
    }

    if (!viewPortHandler!.isInBoundsRight(pointBuffer[0]! - shapeHalf)) break;

    final Color originalColor = set.getColor2(entry.x.toInt());

    var hsv = HSVColor.fromColor(originalColor);
    var color = hsv.toColor();

    highlightPaint
      ?..color = color
      ..strokeWidth = set.getHighlightCircleWidth()!;
    c.drawCircle(
        Offset(pointBuffer[0]!, pointBuffer[1]!), shapeHalf, highlightPaint!);
  }
}