67 lines
1.6 KiB
Swift
67 lines
1.6 KiB
Swift
//
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// AvatarImageView.swift
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// ComposeUI
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//
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// Created by Shadowfacts on 3/4/23.
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//
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import SwiftUI
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public struct AvatarImageView: View {
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public typealias FetchAvatar = (URL) async -> UIImage?
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let url: URL?
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let size: CGFloat
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let style: Style
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let fetchAvatar: FetchAvatar
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@State private var image: UIImage?
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public init(url: URL?, size: CGFloat, style: Style, fetchAvatar: @escaping FetchAvatar) {
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self.url = url
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self.size = size
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self.style = style
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self.fetchAvatar = fetchAvatar
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}
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public var body: some View {
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imageView
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.resizable()
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.frame(width: size, height: size)
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.cornerRadius(style.cornerRadiusFraction * size)
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.task {
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image = nil
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if let url {
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image = await fetchAvatar(url)
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}
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}
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// tell swiftui that this view has changed (and therefore the task needs to re-run) when the url changes
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.id(url)
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}
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private var imageView: Image {
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if let image {
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return Image(uiImage: image)
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} else {
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return placeholder
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}
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}
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private var placeholder: Image {
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Image(systemName: style == .roundRect ? "person.crop.square" : "person.crop.circle")
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}
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public enum Style: Equatable {
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case roundRect, circle
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var cornerRadiusFraction: CGFloat {
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switch self {
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case .roundRect:
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return 0.1
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case .circle:
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return 0.5
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}
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}
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}
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}
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