A photo cropping tool which mimics Photo.app

pod 'Mantis', '~> 0.28'

let cropViewController = Mantis.cropViewController(image: <Your Image>)

public protocol CropViewControllerProtocal: class {
    func didGetCroppedImage(image: UIImage)
}

let cropViewController = Mantis.cropViewController(image: <Your Image>, mode = .normal)

let cropViewController = Mantis.cropViewController(image: <Your Image>, mode = .customizable)

            // Add a custom ratio 1:2 for portrait orientation
            let config = MantisConfig()
            config.addCustomRatio(byVerticalWidth: 1, andVerticalHeight: 2)            
            <Your ViewController> = Mantis.cropViewController(image: <Your Image>, config: config)
            
            // Set the ratioOptions of the config if you don't want to keep all default ratios
            let config = MantisConfig() 
            //config.ratioOptions = [.original, .square, .custom]
            config.ratioOptions = [.custom]
            config.addCustomRatio(byVerticalWidth: 1, andVerticalHeight: 2)            
            <Your ViewController> = Mantis.cropViewController(image: <Your Image>, config: config)

        let cropViewController = Mantis.cropViewController(image: <Your Image>, mode: .normal)
        cropViewController.delegate = self
        <Your ViewController>.present(cropViewController, animated: true)