121 lines
3.7 KiB
Swift
121 lines
3.7 KiB
Swift
// LoadingLargeImageViewController.swift
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// Tusker
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//
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// Created by Shadowfacts on 6/14/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Pachyderm
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class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableViewController {
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let url: URL
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let cache: ImageCache
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let imageDescription: String?
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var largeImageVC: LargeImageViewController?
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var loadingVC: LoadingViewController?
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var imageRequest: ImageCache.Request?
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private var initialControlsVisible: Bool = true
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var controlsVisible: Bool {
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get {
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return largeImageVC?.controlsVisible ?? initialControlsVisible
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}
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set {
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if let largeImageVC = largeImageVC {
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largeImageVC.setControlsVisible(newValue, animated: false)
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} else {
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initialControlsVisible = newValue
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}
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}
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}
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var shrinkGestureEnabled = true
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weak var animationSourceView: UIImageView?
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var animationImage: UIImage? { largeImageVC?.animationImage ?? animationSourceView?.image }
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var animationGifData: Data? { largeImageVC?.animationGifData }
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var dismissInteractionController: LargeImageInteractionController?
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override var prefersStatusBarHidden: Bool {
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return true
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}
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override var childForHomeIndicatorAutoHidden: UIViewController? {
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return largeImageVC
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}
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override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
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if UIDevice.current.userInterfaceIdiom == .phone {
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return .allButUpsideDown
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} else {
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return .all
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}
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}
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init(url: URL, cache: ImageCache, imageDescription: String?) {
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self.url = url
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self.cache = cache
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self.imageDescription = imageDescription
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super.init(nibName: nil, bundle: nil)
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modalPresentationStyle = .fullScreen
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}
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convenience init(attachment: Attachment) {
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self.init(url: attachment.url, cache: .attachments, imageDescription: attachment.description)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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overrideUserInterfaceStyle = .dark
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view.backgroundColor = .black
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if let data = cache.get(url) {
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createLargeImage(data: data)
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} else {
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loadingVC = LoadingViewController()
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embedChild(loadingVC!)
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imageRequest = cache.get(url) { [weak self] (data) in
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guard let self = self else { return }
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self.imageRequest = nil
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DispatchQueue.main.async {
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self.loadingVC?.removeViewAndController()
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self.createLargeImage(data: data!)
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}
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}
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}
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if shrinkGestureEnabled {
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dismissInteractionController = LargeImageInteractionController(viewController: self)
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}
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}
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override func didMove(toParent parent: UIViewController?) {
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super.didMove(toParent: parent)
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if parent == nil {
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imageRequest?.cancel()
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}
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}
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func createLargeImage(data: Data) {
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guard let image = UIImage(data: data) else { return }
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let gifData = url.pathExtension == "gif" ? data : nil
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let imageView = LargeImageImageContentView(image: image, gifData: gifData)
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largeImageVC = LargeImageViewController(contentView: imageView, description: imageDescription, sourceView: animationSourceView)
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largeImageVC!.initialControlsVisible = initialControlsVisible
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largeImageVC!.shrinkGestureEnabled = false
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embedChild(largeImageVC!)
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}
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}
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