52 lines
1.5 KiB
Swift
52 lines
1.5 KiB
Swift
//
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// NSCollectionLayoutSection+Readable.swift
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// Tusker
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//
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// Created by Shadowfacts on 9/28/23.
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// Copyright © 2023 Shadowfacts. All rights reserved.
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//
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import UIKit
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extension NSCollectionLayoutSection {
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// The .readableContent insets reference has a bunch of weird behavior,
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// so just calculate the content inset ourselves.
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func readableContentInset(in environment: NSCollectionLayoutEnvironment) {
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guard let maximumReadableWidth = environment.maximumReadableWidth else {
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return
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}
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let inset = max(0, (environment.container.contentSize.width - maximumReadableWidth) / 2)
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// make sure not to overwrite the vertical insets, which are non-zero for grouped styles
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contentInsets.leading = inset
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contentInsets.trailing = inset
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}
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}
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extension NSCollectionLayoutEnvironment {
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var maximumReadableWidth: CGFloat? {
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switch traitCollection.preferredContentSizeCategory {
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case .extraSmall:
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return 560
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case .small:
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return 600
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case .medium:
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return 632
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case .large:
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return 664
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case .extraLarge:
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return 744
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case .extraExtraLarge:
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return 816
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case .extraExtraExtraLarge:
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return 896
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case .accessibilityMedium:
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return 1096
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default:
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// greater accessibility sizes don't have a limit
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return nil
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}
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}
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}
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