QListView: When querying the itemdelegate's sizeHint and paint for the size passed in the option,they are not consistent

QListView: When querying the itemdelegate's sizeHint and paint for the size passed in the option,they are not consistent, the sizeHint()'s option size accounts for the scrollbar (if there is one) and the paint()'s option size does not, giving it the width of the view instead.