roundable button

roundable_button.swift

import UIKit

class CustomRoundableButton: UIButton {
  @IBInspectable var rounded: Bool = false {
    didSet { self.updateCornerRadius() }
  }
  var cornerRadius: CGFloat?
  
  override func layoutSubviews() {
    super.layoutSubviews()
    self.updateCornerRadius()
  }
  
  func updateCornerRadius() {
    self.layer.cornerRadius = self.rounded ? self.cornerRadius ?? self.frame.size.height / 2 : 0
  }
}