TextCollectionView-Demo_5.swift

class BBInsetLabel: UILabel {
    var textInsets = UIEdgeInsets.zero
    override func textRect(forBounds bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
        guard text != nil else {
            return super.textRect(forBounds: bounds, limitedToNumberOfLines: numberOfLines)
        }
        let insetedRect = bounds.inset(by: textInsets)
        let textRect = super.textRect(forBounds: insetedRect, limitedToNumberOfLines: numberOfLines)
        let newRect = textRect.inset(by: textInsets.inverted())
        return newRect
    }
    override func drawText(in rect: CGRect) {
        let insetedRect = rect.inset(by: textInsets)
        super.drawText(in: insetedRect)
    }
}

extension UIEdgeInsets {
    func inverted() -> UIEdgeInsets {
        UIEdgeInsets(top: -top, left: -left, bottom: -bottom, right: -right)
    }
}