64 lines
2.1 KiB
Swift
64 lines
2.1 KiB
Swift
//
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// AsyncImageWithPlaceholder.swift
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// meterios
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//
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// (c) 2025 Martin "maride" Dessauer
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//
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import Foundation
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import SwiftUI
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import OSLog
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/// **AsyncImageWithPlaceholder** wraps AsyncImage, showing a Spinner while loading and a question mark in case of errors.
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struct AsyncImageWithPlaceholder : View {
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private var url: URL?
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private var width: CGFloat
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private var height: CGFloat
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// Access the current color scheme (that is, e.g.: dark mode, light mode) environment value
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@Environment(\.colorScheme) var colorScheme
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// baseShape and baseShapeView resemble the "background" (while loading, and in case of errors, and for the image itself)
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private var baseShape : some Shape = RoundedRectangle(cornerRadius: 8.0)
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var baseShapeView : some View {
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baseShape
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.foregroundStyle(colorScheme == .dark ? .black : .white)
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.frame(width: width, height: height)
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}
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// Creates a new instance of AsyncImageWithPlaceholder, loading the image pointed to by url, with exact measures of width by height
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init(url: URL? = nil, width: CGFloat, height: CGFloat) {
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self.url = url
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self.width = width
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self.height = height
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}
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var body: some View {
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AsyncImage(url: self.url) { phase in
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if let image = phase.image {
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// Image loaded
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image
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.resizable()
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.aspectRatio(contentMode: .fit)
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.frame(width: self.width, height: self.height)
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.clipShape(baseShape)
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} else if phase.error != nil {
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// Error, log and display a dummy image (question mark)
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let _ = Logger().error("Error loading image: \(phase.error)")
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ZStack {
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baseShapeView
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Text("?")
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.fontWeight(.bold)
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.foregroundStyle(.gray)
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}
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} else {
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// Loading Placeholder
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ZStack {
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baseShapeView
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ProgressView()
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}
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}
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}.fixedSize()
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}
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}
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