IntrinsicHeightLabel.swift

@IBDesignable
class IntrinsicHeightLabel: UILabel {
	
	@IBInspectable
	var h: CGFloat = 0
	
	override var intrinsicContentSize: CGSize {
		let sz = super.intrinsicContentSize
		if h == 0 {
			return sz
		}
		return CGSize(width: sz.width, height: h)
	}
	
	override func layoutSubviews() {
		numberOfLines = 0
		// show Intrinsic Height and Actual Height
		text = "IH: \(intrinsicContentSize.height)\nAH:\(bounds.height)"
	}
	
}