override def draw()

in atlas-chart/src/main/scala/com/netflix/atlas/chart/graphics/HeatmapLegendEntry.scala [46:96]
37 lines of code
7 McCabe index (conditional complexity)

  override def draw(g: Graphics2D, x1: Int, y1: Int, x2: Int, y2: Int): Unit = {
    // Label
    val label = data.settings.label.getOrElse("Heatmap")
    val txt = Text(label, alignment = TextAlignment.LEFT, style = styles.text)
    val truncated = txt.truncate(x2 - x1)
    truncated.draw(g, x1, y1, x2, y2)

    if (showStats) {
      // Color scale
      val colors = data.palette.colorArray
      val offset = y1 + ChartSettings.normalFontDims.height

      // Indent to line up with stats for a normal line
      val d = ChartSettings.normalFontDims.height - 4
      val indent = ChartSettings.smallFontDims.width * 4 + d + 4

      // Width of color scale should match the legend stats
      val scaleWidth = ChartSettings.smallFontDims.width * 38
      val w = scaleWidth / colors.length

      // Color boxes
      g.setColor(Color.WHITE)
      g.fillRect(x1 + indent, offset, w * colors.length, d)
      var i = 0
      while (i < colors.length) {
        g.setColor(colors(i))
        g.fillRect(x1 + indent + i * w, offset, w, d)
        i += 1
      }

      // Axis lines
      styles.line.configure(g)
      g.drawLine(x1 + indent, offset + d, x1 + indent + w * colors.length, offset + d)

      // Vertical ticks for color axis
      val txtW = Math.max(w, ChartSettings.smallFontDims.width * 7)
      val spaceForTicks = w >= txtW
      val colorTicks = data.colorTicks
      i = 0
      while (i < colorTicks.length) {
        val x = x1 + indent + w * i
        styles.line.configure(g)
        g.drawLine(x, offset + d, x, offset + d + 4)
        if (spaceForTicks || i == 0 || i == colorTicks.length - 1) {
          // If space is limited, only show lables for first and last tick
          drawLabel(g, x, offset + d + 4, txtW, colorTicks(i).label)
        }
        i += 1
      }
    }
  }