public TimeViewOvalDrawer(Context context) {
    DISPLAYED_POINTS_BAR_RADIUS_PX = Util.convertDpToPixel(8, context);
    DISPLAYED_POINTS_BAR_INNER_RADIUS_PX = Util.convertDpToPixel(6, context);

    gradientPaint = new Paint();

    selectedRegionPaint = new Paint();
    selectedRegionPaint.setStrokeWidth(Util.convertDpToPixel(2, context));
    selectedRegionPaint.setColor(Color.LTGRAY);

    updateColorRange();
  }