code: private void updatePaintables() {
  		distance.setContent(formatUnits(widthInUnits));
  		backGround.getBounds().setWidth(widthInPixels + 2 * HORIZONTAL_PADDING);
  		rightMarker.getBounds().setX(leftMarker.getBounds().getX() + widthInPixels - 1);
  		bottomLine.getBounds().setWidth(widthInPixels);
  	}
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