imagePositionFactor property
It determines how close the image could get to the center of the page. Affects only for BG images. Should be between 0 and 1. 0 means it wont be visible, 0.5 means it could reach from 0 to 0.25width on the left side and from 0.75 to 1width on the right side of the path, 1 means, image could reach the center of the page. Default is 0.6
Implementation
final double imagePositionFactor;