iOS develop. How to extend UIScrollView's scroll event responding area?

Question

I have a UIScrollView\'s paging enabled and set its clipToBounds = NO so that I can see outside current page.

What I want is to enable the

Answer 1

2019 syntax example:

class LargerScrollArea: UICollectionView {

    // Example, say this is the left half of the screen, but, we wish to be
    // able to scroll on the whole width of the screen

    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {

        if isUserInteractionEnabled == false { return nil }

        let extraOnRight = bounds.width
        let largerBounds = bounds.inset(by:
                UIEdgeInsets(top: 0, left: 0, bottom:0, right: -extraOnRight))
        if largerBounds.contains(point) {
            return self
        }
        else {
            return nil
        }
    }
}

(Collection view, table view, all the same.)