Custom UITextField with padding

CustomUITextField.swift

//
//  CustomTextField.swift
//
//  Created by Shahriyar Soheilizadeh on 18/12/2019.
//  Copyright © 2019 Shahriyar Soheilizadeh. All rights reserved.
//

import UIKit

class CustomTextField: UITextField
{
    private var padding: UIEdgeInsets = UIEdgeInsets(top: 0, left: 16, bottom: 0, right: 16)

    @IBInspectable public var bottomInset: CGFloat {
      get { return padding.bottom }
      set { padding.bottom = newValue }
    }
    @IBInspectable public var leftInset: CGFloat {
      get { return padding.left }
      set { padding.left = newValue }
    }
    @IBInspectable public var rightInset: CGFloat {
      get { return padding.right }
      set { padding.right = newValue }
    }
    @IBInspectable public var topInset: CGFloat {
      get { return padding.top }
      set { padding.top = newValue }
    }
    
    required init?(coder aDecoder: NSCoder) {
      super.init(coder: aDecoder)
    }
    
    override func textRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: self.padding)
    }
    
    override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: self.padding)
    }
    
    override func editingRect(forBounds bounds: CGRect) -> CGRect {
        return bounds.inset(by: self.padding)
    }
    
    override func rightViewRect(forBounds bounds: CGRect) -> CGRect {
        if let right = rightView {
            return CGRect(origin: CGPoint(x: (self.bounds.maxX - right.frame.size.width) - self.padding.right, y: self.bounds.midY - right.frame.size.height / 2), size: right.frame.size)
        }
        return .zero
    }
    
    override func leftViewRect(forBounds bounds: CGRect) -> CGRect {
        if let left = leftView {
            return CGRect(origin: CGPoint(x: (self.bounds.maxX - left.frame.size.width) - self.padding.left, y: self.bounds.midY - left.frame.size.height / 2), size: left.frame.size)
        }
        return .zero
    }

}