UIPaddedLabel.swift

@IBDesignable
class UIPaddedLabel:UILabel {
    @IBInspectable var topPadding:CGFloat = 0 {
        didSet {
            updatePadding()
        }
    }
    
    @IBInspectable var leftPadding:CGFloat = 0 {
        didSet {
            updatePadding()
        }
    }
    @IBInspectable var rightPadding:CGFloat = 0 {
        didSet {
            updatePadding()
        }
    }
    @IBInspectable var bottomPadding:CGFloat = 0 {
        didSet {
            updatePadding()
        }
    }
    
    private func updatePadding() {
        contentInset = UIEdgeInsetsMake(topPadding, leftPadding, bottomPadding, rightPadding)
    }
    
    var contentInset:UIEdgeInsets = UIEdgeInsetsZero {
        didSet {
            setNeedsDisplay()
        }
    }
    
    convenience init(insets:UIEdgeInsets = UIEdgeInsetsZero, text:String? = nil) {
        self.init(frame:CGRectZero)
        contentInset = insets
        self.text = text
    }
    
    override func intrinsicContentSize() -> CGSize {
        let size = super.intrinsicContentSize()
        return CGSize(width: size.width + contentInset.left + contentInset.right, height: size.height + contentInset.top + contentInset.bottom)
    }
    
    override func drawTextInRect(rect: CGRect) {
        super.drawTextInRect(UIEdgeInsetsInsetRect(rect, contentInset))
    }
}