Valdemar Lorenzen
41 lines
1.6 KiB
Swift
41 lines
1.6 KiB
Swift
import AppKit
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@MainActor
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enum IconStyle {
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// Preserve the approved 22-point application artwork slot beside 14-point text.
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static func applicationSize(for font: NSFont) -> CGFloat {
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font.pointSize * (22.0 / 14.0)
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}
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static func symbolConfiguration(for font: NSFont) -> NSImage.SymbolConfiguration {
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.init(pointSize: font.pointSize, weight: .regular, scale: .medium)
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}
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static func symbol(_ name: String, for font: NSFont, accessibilityDescription: String? = nil) -> NSImage? {
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NSImage(systemSymbolName: name, accessibilityDescription: accessibilityDescription)?
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.withSymbolConfiguration(symbolConfiguration(for: font))
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}
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}
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/// A shared artwork slot: font-sized symbols or proportionally sized application/file icons.
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@MainActor
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final class IconView: NSImageView {
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init(font: NSFont) {
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super.init(frame: .zero)
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symbolConfiguration = IconStyle.symbolConfiguration(for: font)
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imageScaling = .scaleProportionallyDown
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setAccessibilityElement(false)
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translatesAutoresizingMaskIntoConstraints = false
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let size = IconStyle.applicationSize(for: font)
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NSLayoutConstraint.activate([
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widthAnchor.constraint(equalToConstant: size),
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heightAnchor.constraint(equalToConstant: size)
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])
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}
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// SF Symbol optical insets must not enlarge the shared artwork slot.
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override var alignmentRectInsets: NSEdgeInsets { NSEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) }
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required init?(coder: NSCoder) { fatalError("Conjure creates icons programmatically") }
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}
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