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Pods/Kingfisher/Sources/SwiftUI/KFImage.swift

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+//
+//  KFImage.swift
+//  Kingfisher
+//
+//  Created by onevcat on 2019/06/26.
+//
+//  Copyright (c) 2019 Wei Wang <onevcat@gmail.com>
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+#if canImport(SwiftUI) && canImport(Combine)
+import SwiftUI
+import Combine
+
+@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
+public struct KFImage: KFImageProtocol {
+    public var context: Context<Image>
+    public init(context: Context<Image>) {
+        self.context = context
+    }
+}
+
+@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
+extension Image: KFImageHoldingView {
+    public typealias RenderingView = Image
+    public static func created(from image: KFCrossPlatformImage?, context: KFImage.Context<Self>) -> Image {
+        Image(crossPlatformImage: image)
+    }
+}
+
+// MARK: - Image compatibility.
+@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
+extension KFImage {
+
+    public func resizable(
+        capInsets: EdgeInsets = EdgeInsets(),
+        resizingMode: Image.ResizingMode = .stretch) -> KFImage
+    {
+        configure { $0.resizable(capInsets: capInsets, resizingMode: resizingMode) }
+    }
+
+    public func renderingMode(_ renderingMode: Image.TemplateRenderingMode?) -> KFImage {
+        configure { $0.renderingMode(renderingMode) }
+    }
+
+    public func interpolation(_ interpolation: Image.Interpolation) -> KFImage {
+        configure { $0.interpolation(interpolation) }
+    }
+
+    public func antialiased(_ isAntialiased: Bool) -> KFImage {
+        configure { $0.antialiased(isAntialiased) }
+    }
+    
+    /// Starts the loading process of `self` immediately.
+    ///
+    /// By default, a `KFImage` will not load its source until the `onAppear` is called. This is a lazily loading
+    /// behavior and provides better performance. However, when you refresh the view, the lazy loading also causes a
+    /// flickering since the loading does not happen immediately. Call this method if you want to start the load at once
+    /// could help avoiding the flickering, with some performance trade-off.
+    ///
+    /// - Deprecated: This is not necessary anymore since `@StateObject` is used for holding the image data.
+    /// It does nothing now and please just remove it.
+    ///
+    /// - Returns: The `Self` value with changes applied.
+    @available(*, deprecated, message: "This is not necessary anymore since `@StateObject` is used. It does nothing now and please just remove it.")
+    public func loadImmediately(_ start: Bool = true) -> KFImage {
+        return self
+    }
+}
+
+#if DEBUG
+@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
+struct KFImage_Previews: PreviewProvider {
+    static var previews: some View {
+        Group {
+            KFImage.url(URL(string: "https://raw.githubusercontent.com/onevcat/Kingfisher/master/images/logo.png")!)
+                .onSuccess { r in
+                    print(r)
+                }
+                .placeholder { p in
+                    ProgressView(p)
+                }
+                .resizable()
+                .aspectRatio(contentMode: .fit)
+                .padding()
+        }
+    }
+}
+#endif
+#endif