It's a UIScrollView with lockout for pan and zoom

LockingScrollView.swift

// (c) Confusion Studios LLC and affiliates. Confidential and proprietary.

import UIKit

public class LockingScrollView: UIScrollView, UIScrollViewDelegate {
    public var isPanningZoomingEnabled = false
    
    init() {
        super.init(frame: .zero)
        delegate = self
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    public func togglePanningZooming() {
        isPanningZoomingEnabled = !isPanningZoomingEnabled
    }

    override public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return isPanningZoomingEnabled
    }

    // MARK: - UIScrollViewDelegate
    
    public func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        if isPanningZoomingEnabled {
            // assert to avoid future programmer errors
            assert(maximumZoomScale != 1.0 || minimumZoomScale != 1.0)
            return subviews.first
        }
        
        return nil
    }
}