40 lines
1.4 KiB
Swift
40 lines
1.4 KiB
Swift
//
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// Copyright 2024 New Vector Ltd.
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// Copyright 2020 Vector Creations Ltd
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import Foundation
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extension UIScrollView {
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/// Scroll to the given view, which must be a view in the scrollView.
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/// - Parameters:
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/// - view: The view to scroll
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/// - insets: Insets for the scroll area. Provide negative values for more visible area than the view's frame
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/// - animated: animate the scroll
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@objc func vc_scroll(to view: UIView, with insets: UIEdgeInsets = .zero, animated: Bool = true) {
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// find the view's frame in the scrollView with given insets
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let rect = view.convert(view.frame, to: self).inset(by: insets)
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DispatchQueue.main.async {
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self.scrollRectToVisible(rect, animated: animated)
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}
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}
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/// Scroll to bottom of the receiver.
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/// - Parameter animated: animate the scroll
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@objc func vc_scrollToBottom(animated: Bool = true) {
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guard contentSize.height >= bounds.height else {
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return
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}
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let bottomOffset = CGPoint(x: 0, y: contentSize.height - bounds.height + contentInset.bottom)
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if contentOffset != bottomOffset {
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// scroll only if not already there
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setContentOffset(bottomOffset, animated: animated)
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}
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}
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}
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