fun build()

in plot-base/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/base/geom/annotation/CrossBarAnnotation.kt [21:86]
59 lines of code
2 McCabe index (conditional complexity)

    fun build(
        root: SvgRoot,
        rectangles: Map<DataPointAesthetics, DoubleRectangle>,
        midLines: Map<Int, DoubleSegment>,
        fatten: Double,
        coord: CoordinateSystem,
        ctx: GeomContext
    ) {
        val annotation = ctx.annotation ?: return
        val viewPort = GeomBase.overallAesBounds(ctx).let(coord::toClient) ?: return
        val padding = annotation.textStyle.size / 2
        val isHorizontallyOriented = ctx.flipped

        rectangles
            .map { (aes, rect) -> Triple(aes, rect, midLines[aes.index()]) }
            .forEach { (aes, rect, midLine) ->
                val text = annotation.getAnnotationText(aes.index(), ctx.plotContext)
                val textSize = AnnotationUtil
                    .textSizeGetter(annotation.textStyle, ctx)
                    .invoke(text, aes)
                val midLineStrokeWidth = AesScaling.strokeWidth(aes) * fatten

                var location = findTextLocation(
                    viewPort,
                    rect,
                    midLine,
                    midLineStrokeWidth,
                    textSize.add(DoubleVector(2 * padding, 2 * padding)),
                    isHorizontallyOriented
                )

                val textRect = DoubleRectangle(
                    location.subtract(textSize.mul(0.5)),
                    textSize
                )

                val (textColor, alpha) = textColorAndLabelAlpha(
                    annotation, aes.color(), aes.fill(),
                    insideGeom = rect.contains(textRect)
                )

                // separate label for each line
                val labels = Label.splitLines(text)

                // Adjust location to center the first line vertically
                location = location.subtract(DoubleVector(0.0, annotation.textStyle.size * labels.size / 2))

                labels.map { line ->
                    AnnotationUtil.createLabelElement(
                        line,
                        location,
                        textParams = AnnotationUtil.TextParams(
                            style = annotation.textStyle,
                            color = textColor,
                            hjust = "middle",
                            vjust = "top",
                            fill = ctx.backgroundColor,
                            alpha = alpha
                        ),
                        geomContext = ctx,
                    ).also {
                        location = location.add(DoubleVector(0.0, annotation.textStyle.size))
                    }
                }.forEach(root::add)
            }
    }