resizableFont()

📗 參考：Swift Playgrounds for iPad (Keep Going with Apps)

import SwiftUI

// 🌀 view.resizableFont()
extension View {
    func resizableFont(
        maxSize : Double = 125, 
        minScale: Double = 0.01
    ) -> some View {
        self.modifier(FlexibleFontModifier(
            maxSize: maxSize, 
            minScale: minScale
        ))
    }
}

// 👔 FlexibleFontModifier
private struct FlexibleFontModifier: ViewModifier {
    
    var maxSize : Double
    var minScale: Double
    
    func body(content: Content) -> some View {
        content
            .font(.system(size: maxSize))
            .minimumScaleFactor(minScale)
    }
}

// ⭐️ ObservableObject (with @Published properties)
class CreatureZoo : ObservableObject {
    @Published var creatures = [
        Creature(name: "Gorilla", emoji: "🦍"),
        Creature(name: "Peacock", emoji: "🦚"),
        Creature(name: "Squid", emoji: "🦑"),
        Creature(name: "Chick", emoji: "🐣"),
        Creature(name: "Dog", emoji: "🐶"),
    ]
}

// ⭐️ content view (details omitted)

// ⭐️ @StateObject
@StateObject private var data = CreatureZoo()

// embeded in a `List` ...
ForEach(data.creatures) { creature in 
    HStack { 
        Text(creature.name).font(.title)
        Spacer()
        Text(creature.emoji)
            // ⭐️ custom view modifier
            .resizableFont()    // 🌀 view.resizableFont()
            .frame(minWidth: 125)
    }
}

Swift Playgrounds for iPad (Keep Going with Apps)
Malauch ⟩ Auto Resizable Text Size In SwiftUI

SwiftUI ⟩
- Text ⟩ minimumScaleFactor(_:)
SwiftOnTap ⟩
- View ⟩ minimumScaleFactor(_:)
- EnvironmentValues ⟩ minimumScaleFactor

Font