Swift 3

UIPaddedLabel.swift

import Foundation
import UIKit

@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 = .zero {
		didSet {
			setNeedsDisplay()
		}
	}
	
	convenience init(insets: UIEdgeInsets = .zero, text: String? = nil) {
		self.init(frame: .zero)
		contentInset = insets
		self.text = text
	}
	
	override var intrinsicContentSize: CGSize {
		let size = super.intrinsicContentSize
		return CGSize(width: size.width + contentInset.left + contentInset.right, height: size.height + contentInset.top + contentInset.bottom)
	}
	
	override func drawText(in rect: CGRect) {
		super.drawText(in: UIEdgeInsetsInsetRect(rect, contentInset))
	}
	
}