forked from zelo72/mastodon-ios
71 lines
2.0 KiB
Swift
71 lines
2.0 KiB
Swift
//
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// ContextMenuImagePreviewViewController.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-4-30.
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//
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import func AVFoundation.AVMakeRect
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import UIKit
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import Combine
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import Nuke
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import FLAnimatedImage
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final class ContextMenuImagePreviewViewController: UIViewController {
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var disposeBag = Set<AnyCancellable>()
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var viewModel: ContextMenuImagePreviewViewModel!
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var imageTask: ImageTask?
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let imageView: UIImageView = {
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let imageView = FLAnimatedImageView()
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imageView.contentMode = .scaleAspectFill
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imageView.layer.masksToBounds = true
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return imageView
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}()
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deinit {
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imageTask?.cancel()
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imageTask = nil
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}
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}
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extension ContextMenuImagePreviewViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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imageView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(imageView)
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NSLayoutConstraint.activate([
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imageView.topAnchor.constraint(equalTo: view.topAnchor),
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imageView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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imageView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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imageView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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imageView.image = viewModel.thumbnail
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let frame = AVMakeRect(aspectRatio: viewModel.aspectRatio, insideRect: view.bounds)
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preferredContentSize = frame.size
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viewModel.url
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.sink { [weak self] url in
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guard let self = self else { return }
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guard let url = url else { return }
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self.imageTask = Nuke.loadImage(
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with: url,
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options: ImageLoadingOptions(
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placeholder: self.viewModel.thumbnail,
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transition: .fadeIn(duration: 0.2)
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),
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into: self.imageView
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)
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}
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.store(in: &disposeBag)
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}
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}
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