UIButton+Padding

UIButtonPadding.swift

extension CGSize {
    func addingPadding(width: CGFloat, height: CGFloat) -> CGSize {
        CGSize(width: self.width + width, height: self.height + height)
    }
}

// Usage:

class PaddedButton: UIButton {
    override var intrinsicContentSize: CGSize {
        super.intrinsicContentSize.addingPadding(width: 60, height: 20)
    }
}