Add the macOS client spike and record its SwiftUI gap results

2026-10-16 22:23:31 -07:00
parent 7e0e6d9585
commit c2d0ff77d7
16 changed files with 1281 additions and 20 deletions
@@ -0,0 +1,30 @@
+import CoreText
+import SwiftUI
+
+enum Fonts {
+    nonisolated(unsafe) private static let descriptors: [String: CTFontDescriptor] = {
+        let dir = Bundle.main.resourceURL!.appendingPathComponent("fonts")
+        var out: [String: CTFontDescriptor] = [:]
+        for name in try! FileManager.default.contentsOfDirectory(atPath: dir.path) where name.hasSuffix(".woff2") {
+            let url = dir.appendingPathComponent(name)
+            let found = CTFontManagerCreateFontDescriptorsFromURL(url as CFURL) as! [CTFontDescriptor]
+            out[name] = found[0]
+        }
+        return out
+    }()
+
+    private static func file(_ subset: String, _ italic: Bool, _ weight: CGFloat) -> CTFontDescriptor {
+        let d = descriptors["atkinson-hyperlegible-mono-\(subset)-wght-\(italic ? "italic" : "normal").woff2"]!
+        return CTFontDescriptorCreateCopyWithVariation(d, 0x7767_6874 as CFNumber, weight)
+    }
+
+    static func ct(_ size: CGFloat, weight: CGFloat = 400, italic: Bool = false) -> CTFont {
+        let ext = file("latin-ext", italic, weight)
+        let d = CTFontDescriptorCreateCopyWithAttributes(file("latin", italic, weight), [kCTFontCascadeListAttribute: [ext]] as CFDictionary)
+        return CTFontCreateWithFontDescriptor(d, size, nil)
+    }
+
+    static func font(_ size: CGFloat, weight: CGFloat = 400, italic: Bool = false) -> Font {
+        Font(ct(size, weight: weight, italic: italic))
+    }
+}