iOS Fonts

Font.swift

import UIKit

extension UIFont {
    
    static var largeTitle: UIFont {
        basisSFPro(FontFamily.SFProText.bold, size: 40, iPhone5Size: 28, textStyle: .largeTitle)
    }
    
    static var title1: UIFont {
        basisSFPro(FontFamily.SFProText.bold, size: 24, iPhone5Size: 20, textStyle: .title1)
    }
    
    static var body: UIFont {
        basisSFPro(FontFamily.SFProText.regular, size: 18, iPhone5Size: 16, textStyle: .body)
    }
    
    static var bodyBold: UIFont {
        basisSFPro(FontFamily.SFProText.bold, size: 18, iPhone5Size: 16, textStyle: .body)
    }
    
    static var caption1: UIFont {
        basisSFPro(FontFamily.SFProText.regular, size: 14, iPhone5Size: 12, textStyle: .caption1)
    }
    
    static var caption2: UIFont {
        basisSFPro(FontFamily.SFProText.regular, size: 12, iPhone5Size: 11, textStyle: .caption2)
    }

    static var headline: UIFont {
        basisSFPro(FontFamily.SFProText.semibold, size: 18, iPhone5Size: 16, textStyle: .headline)
    }
    
    static var number: UIFont {
        basisSFPro(FontFamily.SFProText.bold, size: 80, iPhone5Size: 80, textStyle: .largeTitle, scaled: false)
    }
    
    
    private static func basisSFPro(
        _ family: FontConvertible,
        size: CGFloat,
        iPhone5Size: CGFloat,
        textStyle: UIFont.TextStyle,
        scaled: Bool = true) -> UIFont {

        var actualSize = size
        // Для телефонов с маленьким размером экрана (iPhone 5, SE) используем другой размер шрифта
        if UIScreen.main.bounds.width == 320 {
            actualSize = iPhone5Size
        }

        guard let font = family.font(size: actualSize) else {
            print("Warning: \(family.name) not found.")
            return UIFont.systemFont(ofSize: size, weight: .regular)
        }

        if scaled {
            let metrics = UIFontMetrics(forTextStyle: textStyle)
            return metrics.scaledFont(for: font)
        } else {
            return font
        }
    }
}