36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
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//
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// UIFont.swift
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// CoreDataStack
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//
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// Created by sxiaojian on 2021/1/28.
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//
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import UIKit
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extension UIFont {
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// refs: https://stackoverflow.com/questions/26371024/limit-supported-dynamic-type-font-sizes
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static func preferredFont(withTextStyle textStyle: UIFont.TextStyle, maxSize: CGFloat) -> UIFont {
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// Get the descriptor
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let fontDescriptor = UIFontDescriptor.preferredFontDescriptor(withTextStyle: textStyle)
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// Return a font with the minimum size
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return UIFont(descriptor: fontDescriptor, size: min(fontDescriptor.pointSize, maxSize))
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}
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public static func preferredMonospacedFont(withTextStyle textStyle: UIFont.TextStyle, compatibleWith traitCollection: UITraitCollection? = nil) -> UIFont {
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let fontDescription = UIFontDescriptor.preferredFontDescriptor(withTextStyle: textStyle).addingAttributes([
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UIFontDescriptor.AttributeName.featureSettings: [
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[
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UIFontDescriptor.FeatureKey.featureIdentifier:
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kNumberSpacingType,
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UIFontDescriptor.FeatureKey.typeIdentifier:
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kMonospacedNumbersSelector
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]
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]
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])
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return UIFontMetrics(forTextStyle: textStyle).scaledFont(for: UIFont(descriptor: fontDescription, size: 0), compatibleWith: traitCollection)
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}
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}
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