Fix the watchOS platform compile issues

Author: dreampiggy

Example/SDWebImageSwiftUIDemo/ContentView.swift

@@ -80,20 +80,34 @@ struct ContentView: View {
                 NavigationLink(destination: DetailView(url: url, animated: self.animated)) {
                     HStack {
                         if self.animated {
+                            #if os(macOS) || os(iOS) || os(tvOS)
                             AnimatedImage(url: URL(string:url))
                             .indicator(SDWebImageActivityIndicator.medium)
                             .transition(.fade)
                             .resizable()
                             .scaledToFit()
                             .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
+                            #else
+                            AnimatedImage(url: URL(string:url))
+                            .resizable()
+                            .scaledToFit()
+                            .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
+                            #endif
                         } else {
+                            #if os(macOS) || os(iOS) || os(tvOS)
                             WebImage(url: URL(string:url))
                             .indicator { isAnimating, _ in
                                 ActivityIndicator(isAnimating)
                             }
                             .resizable()
                             .scaledToFit()
                             .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
+                            #else
+                            WebImage(url: URL(string:url))
+                            .resizable()
+                            .scaledToFit()
+                            .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
+                            #endif
                         }
                         Text((url as NSString).lastPathComponent)
                     }

Example/SDWebImageSwiftUIDemo/DetailView.swift

@@ -64,12 +64,26 @@ struct DetailView: View {
                 .resizable()
                 .scaledToFit()
             } else {
+                #if os(macOS) || os(iOS) || os(tvOS)
                 WebImage(url: URL(string:url), options: [.progressiveLoad])
                 .indicator { isAnimating, progress in
                     ProgressIndicator(isAnimating, progress: progress)
                 }
                 .resizable()
                 .scaledToFit()
+                #else
+                WebImage(url: URL(string:url), options: [.progressiveLoad])
+                .onProgress { receivedSize, expectedSize in
+                    // SwiftUI engine itself ensure the main queue dispatch
+                    if (expectedSize > 0) {
+                        self.progress = CGFloat(receivedSize) / CGFloat(expectedSize)
+                    } else {
+                        self.progress = 1
+                    }
+                }
+                .resizable()
+                .scaledToFit()
+                #endif
             }
         }
     }

SDWebImageSwiftUI/Classes/AnimatedImage.swift

@@ -36,9 +36,11 @@ final class AnimatedImageConfiguration: ObservableObject {
     @Published var incrementalLoad: Bool?
     @Published var maxBufferSize: UInt?
     @Published var customLoopCount: Int?
+    #if os(macOS) || os(iOS) || os(tvOS)
     // These configurations only useful for web image loading
     @Published var indicator: SDWebImageIndicator?
     @Published var transition: SDWebImageTransition?
+    #endif
 }
 
 // Convenient
@@ -206,8 +208,10 @@ public struct AnimatedImage : PlatformViewRepresentable {
             #endif
         } else {
             if let url = url {
+                #if os(macOS) || os(iOS) || os(tvOS)
                 view.wrapped.sd_imageIndicator = imageConfiguration.indicator
                 view.wrapped.sd_imageTransition = imageConfiguration.transition
+                #endif
                 loadImage(view, url: url)
             }
         }
@@ -550,6 +554,7 @@ extension AnimatedImage {
     }
 }
 
+#if os(macOS) || os(iOS) || os(tvOS)
 // Web Image convenience
 extension AnimatedImage {
 
@@ -569,6 +574,7 @@ extension AnimatedImage {
         return self
     }
 }
+#endif
 
 #if DEBUG
 struct AnimatedImage_Previews : PreviewProvider {

SDWebImageSwiftUI/Classes/ImageViewWrapper.swift

@@ -66,6 +66,7 @@ public class ProgressIndicatorWrapper : PlatformView {
     public override func layout() {
         super.layout()
         wrapped.frame = self.bounds
+        wrapped.setFrameOrigin(CGPoint(x: (self.bounds.width - wrapped.frame.width) / 2, y: (self.bounds.height - wrapped.frame.height) / 2))
     }
     #else
     public override func layoutSubviews() {

SDWebImageSwiftUI/Classes/Indicator/ActivityIndicator.swift

@@ -8,6 +8,7 @@
 
 import SwiftUI
 
+#if os(macOS) || os(iOS) || os(tvOS)
 /// An activity indicator (system style)
 public struct ActivityIndicator: PlatformViewRepresentable {
     @Binding var isAnimating: Bool
@@ -48,3 +49,4 @@ public struct ActivityIndicator: PlatformViewRepresentable {
 
     #endif
 }
+#endif

SDWebImageSwiftUI/Classes/Indicator/ProgressIndicator.swift

@@ -8,6 +8,7 @@
 
 import SwiftUI
 
+#if os(macOS) || os(iOS) || os(tvOS)
 /// A progress bar indicator (system style)
 public struct ProgressIndicator: PlatformViewRepresentable {
     @Binding var isAnimating: Bool
@@ -78,6 +79,6 @@ public struct ProgressIndicator: PlatformViewRepresentable {
             }
         }
     }
-    
     #endif
 }
+#endif