SwiftUI custom font - all font types use new font

Question

I'm currently using a custom font in my app, but am finding it a bit frustrating having to use .font(Font.custom("Montserrat-Regular", size: 16)) everywhere. Is there a way I can set the the entire app to be using this font, and I can simply use .font(.system(size: 16)) and even use standard sizes like .font(.caption) and it will use the custom font?

I've actually set .font(Font.custom("Montserrat-Medium", size: 16)) on my ContentView as shown below, which allows me to use this font everywhere, but the size is always 16, and when I change it, the font goes back to the default font.

@main
struct AppName: App {
  var body: some Scene {
    WindowGroup {
        ContentView()
            .font(Font.custom("Montserrat-Regular", size: 16))
    }
  }
}

Kai Zheng · Accepted Answer · 2021-01-26 22:39:37Z

3

You could create constants using a custom Type, for example AppFont like so:

enum AppFont {

    static let header       = Font.custom(Raleway.extraBold.weight,    size: 40)
    static let header2      = Font.custom(Raleway.extraBold.weight,    size: 30)
    static let title        = Font.custom(Raleway.bold.weight,         size: 32)
    static let title2       = Font.custom(Raleway.extraBold.weight,    size: 22)
    static let subtitle     = Font.custom(Raleway.bold.weight,         size: 16)
    static let body         = Font.custom(Raleway.medium.weight,       size: 17)
    static let body2        = Font.custom(Raleway.regular.weight,      size: 17)
    static let footnote     = Font.custom(Raleway.regular.weight,      size: 16)
    static let footnote2    = Font.custom(Raleway.regular.weight,      size: 13)
    
    static var custom: (Raleway, CGFloat) -> Font = { (weight, size) in
        return Font.custom(weight.weight, size: size)
    }
}

enum Raleway: String {

    case black        = "Raleway-Black"
    case extraBold    = "Raleway-ExtraBold"
    case bold         = "Raleway-Bold"
    case semiBold     = "Raleway-SemiBold"
    case medium       = "Raleway-Medium"
    case regular      = "Raleway-Regular"
    case light        = "Raleway-Light"
    case extraLight   = "Raleway-ExtraLight"
    case thin         = "Raleway-Thin"
    
    var weight: String { return self.rawValue }
}

Usage

Text("Example")
    .font(AppFont.header)

This is an excerpt from my app, you may replace Raleway with your font, namely Montserrat or any font. Just to give you an example.

Note

I would not recommend simply extending Font. I find it more clear to have custom Types for any app-custom stuff.

edited Jan 26, 2021 at 22:39

answered Jan 26, 2021 at 22:12

Kai Zheng

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2 Comments

SeanForReal Over a year ago

This is absolutely perfect. Thanks!

DrMickeyLauer Over a year ago

Still, the original question is somewhat open. I’d like to see the built in headline, body, footnote, and the like to use a custom font without having to explicitly state it.

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