/*

    Copyright (C) 2015 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    A `UIViewController` subclass to handle picking, viewing, and printing of a photo.

*/

import MobileCoreServices

import UIKit

class CustomAssetPrintViewController: UIViewController, UINavigationControllerDelegate {

    // MARK: Properties

    @IBOutlet weak var imageView: UIImageView!

    // MARK: Target / Action Methods

    /// Invoked when the user chooses the action icon for printing.

    @IBAction func shareImage() {

        guard let image = imageView.image else {

            fatalError("\(__FUNCTION__) expects image to not be nil.")

        }

        let printPageRenderer = CustomAssetPrintPageRenderer(image: image)

        // Create a print info object for the activity.

        let printInfo = UIPrintInfo.printInfo()

        /*

            This application prints photos. UIKit will pick a paper size and print

            quality appropriate for this content type.

        */

        printInfo.outputType = .Photo

        // Use the name from the image metadata we've set.

        printInfo.jobName = "Horse"

        // Give the print info and page renderer to UIKit.

        let printActivityItems: [AnyObject] = [

            printInfo,

            printPageRenderer

        ]

        /*

            Let the `UIActivityViewController` class handle presenting an action

            sheet that will let the user print the image.

        */

        let activityViewController = UIActivityViewController(activityItems: printActivityItems, applicationActivities: nil)

        presentViewController(activityViewController, animated: true, completion: nil)

    }

}