Toolbar customization for TOCropViewController

CropViewController.swift

//
//  CropViewController.swift
//  
//
//  Created by Alex Kovalov on 10/6/16.
//  Copyright © 2016 . All rights reserved.
//

import Foundation
import UIKit
import TOCropViewController

class CropViewController: UIViewController {
    
    // MARK: Properties
    
    @IBOutlet weak var toolbarView: UIView!
    @IBOutlet weak var backButton: UIButton!
    @IBOutlet weak var rotateCounterClockwiseButton: UIButton!
    @IBOutlet weak var resetLayoutButton: UIButton!
    @IBOutlet weak var rotateClockwiseButton: UIButton!
    @IBOutlet weak var nextButton: UIButton!
    
    var cropVC: CustomTOCropViewController!
    
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    
    // MARK: Lifecycle
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        
        cropVC.view.frame = CGRect(x: 0, y: 20, width: view.bounds.size.width, height: view.bounds.size.height - toolbarView.frame.size.height - 20)
        cropVC.view.setNeedsLayout()
    }
    
    
    // MARK: Actions
    
    func setupWith(image: UIImage) {
        cropVC = CustomTOCropViewController(image: image)
        cropVC.delegate = self
        cropVC.toolbar.isHidden = true
        
        addChildViewController(cropVC)
        view.addSubview(cropVC.view)
        cropVC.didMove(toParentViewController: self)
        
        view.bringSubview(toFront: toolbarView)
        view.backgroundColor = cropVC.view.backgroundColor
        
        resetLayout(resetLayoutButton)
    }
    
    @IBAction func next(_ sender: AnyObject) {
        let selector = NSSelectorFromString("doneButtonTapped")
        if cropVC.responds(to: selector) {
            cropVC.perform(selector)
        }
    }

    @IBAction func rotateClockwise(_ sender: AnyObject) {
        let selector = NSSelectorFromString("rotateCropViewClockwise")
        if cropVC.responds(to: selector) {
            cropVC.perform(selector)
        }
    }
    
    @IBAction func resetLayout(_ sender: AnyObject) {
        let selector = NSSelectorFromString("resetCropViewLayout")
        if cropVC.responds(to: selector) {
            cropVC.perform(selector)
        }
    }
    
    @IBAction func rotateCounterClockwise(_ sender: AnyObject) {
        let selector = NSSelectorFromString("rotateCropViewCounterclockwise")
        if cropVC.responds(to: selector) {
            cropVC.perform(selector)
        }
    }
    
    @IBAction func back(_ sender: AnyObject) {
        _ = navigationController?.popViewController(animated: true)
    }
    
}

extension CropViewController: TOCropViewControllerDelegate {
    
    func cropViewController(_ cropViewController: TOCropViewController!, didCropTo image: UIImage!, with cropRect: CGRect, angle: Int) {
        // TODO: go to next screen
    }
}


class CustomTOCropViewController: TOCropViewController {
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        
        cropView.frame = CGRect(x: 0, y: 0, width: view.bounds.size.width, height: view.bounds.size.height)
    }
    
}

How to use:
let vc = UIStoryboard(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier: "CropViewController")
vc.setupWith(image: image)
self.navigationController?.pushViewController(vc, animated: true)