188 lines
5.7 KiB
Swift
188 lines
5.7 KiB
Swift
//
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// LargeImageContentView.swift
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// Tusker
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//
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// Created by Shadowfacts on 6/17/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Pachyderm
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import AVFoundation
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import VisionKit
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protocol LargeImageContentView: UIView {
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var animationImage: UIImage? { get }
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var activityItemsForSharing: [Any] { get }
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var owner: LargeImageViewController? { get set }
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func setControlsVisible(_ controlsVisible: Bool)
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func grayscaleStateChanged()
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}
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class LargeImageImageContentView: UIImageView, LargeImageContentView {
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#if !targetEnvironment(macCatalyst)
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@available(iOS 16.0, *)
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private static let analyzer = ImageAnalyzer()
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private var _analysisInteraction: AnyObject?
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@available(iOS 16.0, *)
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private var analysisInteraction: ImageAnalysisInteraction? { _analysisInteraction as? ImageAnalysisInteraction }
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#endif
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var animationImage: UIImage? { image! }
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var activityItemsForSharing: [Any] {
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[image!]
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}
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weak var owner: LargeImageViewController?
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private var sourceData: Data?
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init(image: UIImage) {
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super.init(image: image)
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contentMode = .scaleAspectFit
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isUserInteractionEnabled = true
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#if !targetEnvironment(macCatalyst)
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if #available(iOS 16.0, *),
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ImageAnalyzer.isSupported {
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let interaction = ImageAnalysisInteraction()
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self._analysisInteraction = interaction
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interaction.delegate = self
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interaction.preferredInteractionTypes = .automatic
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addInteraction(interaction)
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Task {
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do {
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let result = try await LargeImageImageContentView.analyzer.analyze(image, configuration: ImageAnalyzer.Configuration([.text, .machineReadableCode]))
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interaction.analysis = result
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} catch {
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// if analysis fails, we just don't show anything
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}
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}
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}
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#endif
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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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func setControlsVisible(_ controlsVisible: Bool) {
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#if !targetEnvironment(macCatalyst)
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if #available(iOS 16.0, *),
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let analysisInteraction {
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// note: passing animated: true here doesn't seem to do anything by itself as of iOS 16.2 (20C5032e)
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// so the LargeImageViewController handles animating, but we still need to pass true here otherwise it doesn't animate
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analysisInteraction.setSupplementaryInterfaceHidden(!controlsVisible, animated: true)
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}
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#endif
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}
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func grayscaleStateChanged() {
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guard let data = sourceData else {
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return
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}
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let image: UIImage?
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if Preferences.shared.grayscaleImages {
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image = ImageGrayscalifier.convert(url: nil, data: data)
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} else {
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image = UIImage(data: data)
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}
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if let image = image {
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self.image = image
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}
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}
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}
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#if !targetEnvironment(macCatalyst)
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@available(iOS 16.0, *)
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extension LargeImageImageContentView: ImageAnalysisInteractionDelegate {
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func presentingViewController(for interaction: ImageAnalysisInteraction) -> UIViewController? {
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return owner
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}
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}
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#endif
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class LargeImageGifContentView: GIFImageView, LargeImageContentView {
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var animationImage: UIImage? { image }
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var activityItemsForSharing: [Any] {
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// todo: should gifs share the data?
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[image].compactMap { $0 }
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}
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weak var owner: LargeImageViewController?
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init(gifController: GIFController) {
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super.init(image: gifController.lastFrame?.image)
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contentMode = .scaleAspectFit
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gifController.attach(to: self)
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// todo: doing this in the init feels wrong
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gifController.startAnimating()
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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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func setControlsVisible(_ controlsVisible: Bool) {
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}
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func grayscaleStateChanged() {
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// todo
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}
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}
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class LargeImageGifvContentView: GifvAttachmentView, LargeImageContentView {
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private(set) var animationImage: UIImage?
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var activityItemsForSharing: [Any] {
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// todo: what should we share for gifvs?
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// some SO posts indicate that just sharing a URL to the video should work, but that may need to be a local URL?
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[]
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}
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weak var owner: LargeImageViewController?
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private let asset: AVURLAsset
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private var videoSize: CGSize?
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override var intrinsicContentSize: CGSize {
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videoSize ?? CGSize(width: UIView.noIntrinsicMetric, height: UIView.noIntrinsicMetric)
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}
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init(attachment: Attachment, source: UIImageView) {
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precondition(attachment.kind == .gifv)
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self.asset = AVURLAsset(url: attachment.url)
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super.init(asset: asset, gravity: .resizeAspect)
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self.animationImage = source.image
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self.player.play()
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Task {
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do {
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if let track = try await asset.loadTracks(withMediaType: .video).first {
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let (size, transform) = try await track.load(.naturalSize, .preferredTransform)
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self.videoSize = size.applying(transform)
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self.invalidateIntrinsicContentSize()
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}
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} catch {
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}
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}
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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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func setControlsVisible(_ controlsVisible: Bool) {
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}
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func grayscaleStateChanged() {
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// no-op, GifvAttachmentView observes the grayscale state itself
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}
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}
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