feat: generate Swift design tokens from tokens.json and add SstUI base

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-01 15:19:06 +02:00
parent bf731dab37
commit bd6bc3b890
10 changed files with 659 additions and 21 deletions
@@ -0,0 +1,78 @@
+import SwiftUI
+
+public struct TextStyle: Equatable {
+    public let family: FontFamily
+    public let size: CGFloat
+    public let weight: Int
+    /// In em.
+    public let tracking: CGFloat
+    public let line: CGFloat
+    public let caps: Bool
+    public let tabular: Bool
+
+    public init(family: FontFamily, size: CGFloat, weight: Int, tracking: CGFloat, line: CGFloat, caps: Bool, tabular: Bool) {
+        self.family = family
+        self.size = size
+        self.weight = weight
+        self.tracking = tracking
+        self.line = line
+        self.caps = caps
+        self.tabular = tabular
+    }
+
+    var fontWeight: Font.Weight {
+        switch weight {
+        case ..<450: .regular
+        case 450..<550: .medium
+        case 550..<650: .semibold
+        default: .bold
+        }
+    }
+
+    public var font: Font {
+        let base: Font
+        switch family {
+        case .mono: base = .system(size: size, weight: fontWeight, design: .monospaced)
+        case .text: base = .system(size: size, weight: fontWeight)
+        case .chrome: base = .custom(family.rawValue, size: size).weight(fontWeight)
+        }
+        return tabular ? base.monospacedDigit() : base
+    }
+}
+
+public extension View {
+    /// Font, tracking, line spacing and capitalisation from a token text style.
+    func textStyle(_ style: TextStyle) -> some View {
+        self.font(style.font)
+            .tracking(style.tracking * style.size)
+            .lineSpacing(max(0, style.line - style.size * 1.2))
+            .textCase(style.caps ? .uppercase : nil)
+    }
+}
+
+/// One layer of a layered shadow token. Inset layers are drawn inside the shape.
+public struct ShadowLayer: Equatable {
+    public let inset: Bool
+    public let x: CGFloat
+    public let y: CGFloat
+    public let blur: CGFloat
+    public let spread: CGFloat
+    public let hex: UInt32
+    public let alphaLight: Double
+    public let alphaDark: Double
+
+    public init(inset: Bool, x: CGFloat, y: CGFloat, blur: CGFloat, spread: CGFloat, hex: UInt32, alphaLight: Double, alphaDark: Double) {
+        self.inset = inset
+        self.x = x
+        self.y = y
+        self.blur = blur
+        self.spread = spread
+        self.hex = hex
+        self.alphaLight = alphaLight
+        self.alphaDark = alphaDark
+    }
+
+    public func color(_ scheme: ColorScheme) -> Color {
+        Color.fixed(hex: hex).opacity(scheme == .dark ? alphaDark : alphaLight)
+    }
+}