问如何利用AppKit在macOS上实现鼠标滚轮水平滚动

EN

import Cocoa

class YourCollectionView: NSCollectionView {

    override func scrollWheel(with event: NSEvent) {
        // get mouse wheel scroll offset
        let scrollOffset = event.scrollingDeltaY

        // scroll collectionView your self, maybe like this
        if let clipView = self.enclosingScrollView?.contentView as? NSClipView {
            let currentPoint = self.visibleRect.origin
            let newPoint = CGPoint(x: currentPoint.x + scrollOffset ,y: currentPoint.y)
            clipView.scroll(to: newPoint)
        }
    }
}