87 lines
2.5 KiB
Swift
87 lines
2.5 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 Gifu
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import Pachyderm
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import AVFoundation
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protocol LargeImageContentView {
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var animationImage: UIImage? { get }
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var animationGifData: Data? { get }
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var activityItemsForSharing: [Any] { get }
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}
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class LargeImageImageContentView: UIImageView, GIFAnimatable, LargeImageContentView {
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lazy var animator: Animator? = {
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return Animator(withDelegate: self)
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}()
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var animationImage: UIImage? { image! }
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let animationGifData: Data?
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var activityItemsForSharing: [Any] {
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[image!]
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}
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init(image: UIImage, gifData: Data?) {
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self.animationGifData = gifData
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super.init(image: image)
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contentMode = .scaleAspectFit
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if let data = gifData {
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self.animate(withGIFData: data)
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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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override public func display(_ layer: CALayer) {
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super.display(layer)
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updateImageIfNeeded()
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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 animationGifData: Data? { nil }
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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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private let asset: AVURLAsset
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// The content view needs to supply an intrinsicContentSize for the LargeImageViewController to handle layout/scrolling/zooming correctly
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override var intrinsicContentSize: CGSize {
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// This is a really sucky workaround for the fact that in the content view, we don't have access to the size of the underlying video.
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// There's probably some way of getting this from the AVPlayer/AVAsset directly
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animationImage?.size ?? 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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}
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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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}
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