Set the horizontal position of the watermark. The default values are ha_center and 0. The distance is measured from the left edge of the page to the left edge of the watermark (ha_left), from the center of the page to the center of the watermark (ha_center), or from the right edge of the page to the right edge of the watermark. For ha_left and ha_center, positive values push the watermark to the right, for ha_right, positive values push the watermark to the left.

public void setHorizontalPosition(
	HorizontalAlignment alignment,
	double distance
)