NSTextEffectLetterpressStyle: How to add a letterpress effect to text

Swift version: 5.1

Paul Hudson @twostraws May 28th 2019

You can add a subtle embossing effect to any text in your app using NSAttributedString and NSTextEffectLetterpressStyle. As an example, this code creates an attributed string using 24-point Georgia Bold in red, with Apple's letterpress effect applied, then writes it into a label:

let attrs = [NSAttributedString.Key.foregroundColor: UIColor.red,
             NSAttributedString.Key.font: UIFont(name: "Georgia-Bold", size: 24)!,
             NSAttributedString.Key.textEffect: NSAttributedString.TextEffectStyle.letterpressStyle as NSString
             ]

let string = NSAttributedString(string: "Hello, world!", attributes: attrs)
yourLabel.attributedText = string