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62 lines
2.0 KiB
Swift
62 lines
2.0 KiB
Swift
//
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// AdaptiveMarginContainerView.swift
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//
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//
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// Created by MainasuK on 2022-2-18.
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//
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import UIKit
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public final class AdaptiveMarginContainerView: UIView {
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public var margin: CGFloat = 0 {
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didSet { updateConstraints() }
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}
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public var contentView: UIView? {
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didSet {
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guard let contentView = contentView else { return }
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guard contentView.superview == nil else { return }
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contentView.translatesAutoresizingMaskIntoConstraints = false
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addSubview(contentView)
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let _topLayoutConstraint = contentView.topAnchor.constraint(equalTo: topAnchor)
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let _leadingLayoutConstraint = contentView.leadingAnchor.constraint(equalTo: leadingAnchor)
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let _trailingLayoutConstraint = trailingAnchor.constraint(equalTo: contentView.trailingAnchor)
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let _bottomLayoutConstraint = bottomAnchor.constraint(equalTo: contentView.bottomAnchor)
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NSLayoutConstraint.activate([
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_topLayoutConstraint,
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_leadingLayoutConstraint,
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_trailingLayoutConstraint,
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_bottomLayoutConstraint
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])
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topLayoutConstraint = _topLayoutConstraint
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leadingLayoutConstraint = _leadingLayoutConstraint
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trailingLayoutConstraint = _trailingLayoutConstraint
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bottomLayoutConstraint = _bottomLayoutConstraint
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updateConstraints()
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}
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}
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private(set) var topLayoutConstraint: NSLayoutConstraint?
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private(set) var leadingLayoutConstraint: NSLayoutConstraint?
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private(set) var trailingLayoutConstraint: NSLayoutConstraint?
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private(set) var bottomLayoutConstraint: NSLayoutConstraint?
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}
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extension AdaptiveMarginContainerView {
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public override func updateConstraints() {
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super.updateConstraints()
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leadingLayoutConstraint?.constant = margin
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trailingLayoutConstraint?.constant = margin
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}
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}
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