71 lines
1.9 KiB
Swift
71 lines
1.9 KiB
Swift
//
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// ComposeAvatarImageView.swift
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// Tusker
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//
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// Created by Shadowfacts on 8/18/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import SwiftUI
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struct ComposeAvatarImageView: View {
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let url: URL?
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@State var request: ImageCache.Request? = nil
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@State var avatarImage: UIImage? = nil
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@ObservedObject var preferences = Preferences.shared
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var body: some View {
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image
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.resizable()
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.conditionally(url != nil) {
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$0.onAppear(perform: self.loadImage)
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}
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.onDisappear(perform: self.cancelRequest)
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}
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private var image: Image {
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if let avatarImage = avatarImage {
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return Image(uiImage: avatarImage).renderingMode(.original)
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} else {
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return placeholderImage
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}
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}
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private var placeholderImage: Image {
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let imageName: String
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switch preferences.avatarStyle {
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case .circle:
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imageName = "person.crop.circle"
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case .roundRect:
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imageName = "person.crop.square"
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}
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return Image(systemName: imageName)
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}
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private func loadImage() {
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guard let url = url else { return }
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request = ImageCache.avatars.get(url) { (data) in
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if let data = data, let image = UIImage(data: data) {
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DispatchQueue.main.async {
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self.request = nil
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self.avatarImage = image
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}
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} else {
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DispatchQueue.main.async {
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self.request = nil
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}
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}
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}
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}
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private func cancelRequest() {
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request?.cancel()
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}
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}
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struct ComposeAvatarImageView_Previews: PreviewProvider {
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static var previews: some View {
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ComposeAvatarImageView(url: URL(string: "https://social.shadowfacts.net/media/4b481afc591a8f3d11d0f5732e5cb320422dec72d7f223ebb5f35d5d0e821a9c.png")!)
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}
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}
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