106 lines
3.0 KiB
Swift
106 lines
3.0 KiB
Swift
//
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// Swiftfin is subject to the terms of the Mozilla Public
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// License, v2.0. If a copy of the MPL was not distributed with this
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// file, you can obtain one at https://mozilla.org/MPL/2.0/.
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//
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// Copyright (c) 2022 Jellyfin & Jellyfin Contributors
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//
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import Nuke
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import NukeUI
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import SwiftUI
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import UIKit
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// TODO: Fix 100+ inits
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struct ImageViewSource {
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let url: URL?
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let blurHash: String?
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init(url: URL? = nil, blurHash: String? = nil) {
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self.url = url
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self.blurHash = blurHash
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}
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}
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struct DefaultFailureView: View {
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var body: some View {
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Color.secondary
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}
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}
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struct ImageView<FailureView: View>: View {
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@State
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private var sources: [ImageViewSource]
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private var currentURL: URL? { sources.first?.url }
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private var currentBlurHash: String? { sources.first?.blurHash }
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private var failureView: FailureView
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init(_ source: URL?, blurHash: String? = nil, @ViewBuilder failureView: () -> FailureView) {
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let imageViewSource = ImageViewSource(url: source, blurHash: blurHash)
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_sources = State(initialValue: [imageViewSource])
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self.failureView = failureView()
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}
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init(_ source: ImageViewSource, @ViewBuilder failureView: () -> FailureView) {
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_sources = State(initialValue: [source])
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self.failureView = failureView()
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}
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init(_ sources: [ImageViewSource], @ViewBuilder failureView: () -> FailureView) {
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_sources = State(initialValue: sources)
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self.failureView = failureView()
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}
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@ViewBuilder
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private var placeholderView: some View {
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if let currentBlurHash = currentBlurHash {
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BlurHashView(blurHash: currentBlurHash)
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.id(currentBlurHash)
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} else {
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Color.secondary
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}
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}
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var body: some View {
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if let currentURL = currentURL {
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LazyImage(source: currentURL) { state in
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if let image = state.image {
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image
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} else if state.error != nil {
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placeholderView.onAppear { sources.removeFirst() }
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} else {
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placeholderView
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}
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}
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.pipeline(ImagePipeline(configuration: .withDataCache))
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.id(currentURL)
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} else {
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failureView
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}
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}
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}
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extension ImageView where FailureView == DefaultFailureView {
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init(_ source: URL?, blurHash: String? = nil) {
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let imageViewSource = ImageViewSource(url: source, blurHash: blurHash)
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self.init(imageViewSource, failureView: { DefaultFailureView() })
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}
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init(_ source: ImageViewSource) {
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self.init(source, failureView: { DefaultFailureView() })
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}
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init(_ sources: [ImageViewSource]) {
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self.init(sources, failureView: { DefaultFailureView() })
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}
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init(sources: [URL]) {
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let imageViewSources = sources.compactMap { ImageViewSource(url: $0, blurHash: nil) }
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self.init(imageViewSources, failureView: { DefaultFailureView() })
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}
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}
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