mastodon-ios/Mastodon/Extension/UIScrollView.swift

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2021-03-15 13:23:27 +01:00
//
// UIScrollView.swift
// Mastodon
//
// Created by sxiaojian on 2021/3/15.
//
import UIKit
extension UIScrollView {
public enum ScrollDirection {
case top
case bottom
case left
case right
}
public func scroll(to direction: ScrollDirection, animated: Bool) {
let offset: CGPoint
switch direction {
case .top:
offset = CGPoint(x: contentOffset.x, y: -adjustedContentInset.top)
case .bottom:
offset = CGPoint(x: contentOffset.x, y: max(-adjustedContentInset.top, contentSize.height - frame.height + adjustedContentInset.bottom))
case .left:
offset = CGPoint(x: -adjustedContentInset.left, y: contentOffset.y)
case .right:
offset = CGPoint(x: max(-adjustedContentInset.left, contentSize.width - frame.width + adjustedContentInset.right), y: contentOffset.y)
}
setContentOffset(offset, animated: animated)
}
}