Tocropviewcontroller: How to create original done button

I have solved the problem myself.

How you have done this? Can you please give an explanation here? @ muranobu

@twinkalGSensussoft
Hi, Sample code is here.

1. Create original cropViewController.

let cropViewController = CropViewController(image: OriginalImage)

1. Add cropViewController to Container View

self.addChild(cropViewController)
self.cropContainer.addSubview(cropViewController.view)

1. Adjust cropViewController frame.

cropViewController.view.frame = CGRect(x: self.cropContainer.frame.origin.x, y: self.cropContainer.frame.origin.y, width: self.cropContainer.frame.width, height: self.cropContainer.frame.height)

1. If you want to hide default toolbar, you must below code.

cropViewController.toolbar.isHidden = true

1. Display cropViewController.

cropViewController.didMove(toParent: self)

1. Define original done action and call doneButtonTapped!().

@IBAction func cropDoneButtonTUP(_ sender: UIButton) {       
      self.cropViewController.toolbar.doneButtonTapped!()
}

What if I don't want only 90-degree rotation?. I want to add a rotation gesture to it, is it possible? If yes then please help me out.
thanks in advance.