UILabel border and padding

Question

I want to add padding inside my label in order to have spaces between it and its border. I created for that a class that extends from UILabel.

UILabelPadding.swift:

import UIKit

class UILabelPadding: UILabel {

    let padding = UIEdgeInsets(top: 30, left: 30, bottom: 30, right: 30)
    override func drawText(in rect: CGRect) {
        super.drawText(in: UIEdgeInsetsInsetRect(rect, padding))
    }

   override var intrinsicContentSize : CGSize {
        let superContentSize = super.intrinsicContentSize
        let width = superContentSize.width + padding.left + padding.right
        let heigth = superContentSize.height + padding.top + padding.bottom
        return CGSize(width: width, height: heigth)
    }

    override func sizeThatFits(_ size: CGSize) -> CGSize {
        let superSizeThatFits = super.sizeThatFits(size)
        let width = superSizeThatFits.width + padding.left + padding.right
        let heigth = superSizeThatFits.height + padding.top + padding.bottom
        return CGSize(width: width, height: heigth)
    }


}

and I changed the type of myLabel from UILabel to UILabelPadding. In my UIViewController, I set the text of myLabel, call the sizeToFit() and after that I add the border and the background color to myLabel:

   myLabel.text = "label test"
   myLabel.sizeToFit()
    //background + border
    myLabel.layer.borderColor  = UIColor(red: 27/255, green: 100/255, blue: 90/255,  alpha: 1.0).cgColor
    myLabel.layer.backgroundColor = UIColor(red: 27/255, green: 100/255, blue: 90/255,  alpha: 1.0).cgColor
    myLabel.layer.cornerRadius = 9
    myLabel.layer.masksToBounds = true
    myLabel.layer.borderWidth = 1

The border and the background color are added but the padding is not working. When I debug, the sizeThatFits() is never called.

Any help please?

Answer 1

I solved the issue!

For those how are facing the same problem:

1- Make a class extending from UILabel:

UILabelPadding.swift:

class UILabelPadding: UILabel {

    let padding = UIEdgeInsets(top: 2, left: 8, bottom: 2, right: 8)
    override func drawText(in rect: CGRect) {
        super.drawText(in: rect.inset(by: padding))
    }

    override var intrinsicContentSize : CGSize {
        let superContentSize = super.intrinsicContentSize
        let width = superContentSize.width + padding.left + padding.right
        let heigth = superContentSize.height + padding.top + padding.bottom
        return CGSize(width: width, height: heigth)
    }



}

2- Set the type of your label to the UILabelPadding and make sure that the type is set also in the storyboard.