Rewrite the library using Swift concurrency (#30)

* Rewrite using Swift concurrency.

* Update workflows

* Run swift-format

* Fix Xcode version in workflows

* Update sample code

* Update README

* Run swift-format

* Update README

* Better approach for visionOS compatibility

* Run swift-format

* Update documentation

* Add SwiftPackageIndex manifest

* Replace PlatformImage with CGImage

.github/workflows/ci.yml

@@ -8,10 +8,10 @@ on:
       - '*'
 jobs:
   tests:
-    runs-on: macos-11
+    runs-on: macos-12
     steps:
       - uses: actions/checkout@v2
-      - name: Select Xcode 13.1
-        run: sudo xcode-select -s /Applications/Xcode_13.1.app
+      - name: Select Xcode 14.2
+        run: sudo xcode-select -s /Applications/Xcode_14.2.app
       - name: Run tests
         run: make test

.github/workflows/format.yml

@@ -6,13 +6,15 @@ on:
 jobs:
   format:
     name: swift-format
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
       - uses: actions/checkout@v2
+      - name: Select Xcode 14.2
+        run: sudo xcode-select -s /Applications/Xcode_14.2.app
       - name: Tap
         run: brew tap pointfreeco/formulae
       - name: Install
-        run: brew install Formulae/swift-format@5.3
+        run: brew install Formulae/swift-format@5.7
       - name: Format
         run: make format
       - uses: stefanzweifel/git-auto-commit-action@v4

.spi.yml

@@ -0,0 +1,4 @@
+version: 1
+builder:
+  configs:
+  - documentation_targets: [NetworkImage]

Demo/Shared/ContentView.swift

@@ -0,0 +1,52 @@
+import SwiftUI
+
+struct ContentView: View {
+  var body: some View {
+    NavigationView {
+      List {
+        NavigationLink {
+          ImagesView()
+            .navigationTitle("Displaying Images")
+            .inlineNavigationBarTitleDisplayMode()
+        } label: {
+          Label("Displaying Images", systemImage: "photo")
+        }
+        NavigationLink {
+          StyledImagesView()
+            .navigationTitle("Styling Images")
+            .inlineNavigationBarTitleDisplayMode()
+        } label: {
+          Label("Styling Images", systemImage: "photo.artframe")
+        }
+        NavigationLink {
+          PlaceholdersView()
+            .navigationTitle("Placeholders and fallbacks")
+            .inlineNavigationBarTitleDisplayMode()
+        } label: {
+          Label("Placeholders and fallbacks", systemImage: "square.dashed")
+        }
+        NavigationLink {
+          RandomImageView()
+            .navigationTitle("Random Image")
+            .inlineNavigationBarTitleDisplayMode()
+        } label: {
+          Label("Random Image", systemImage: "questionmark.square")
+        }
+        NavigationLink {
+          ImageListView()
+            .navigationTitle("Image List")
+            .inlineNavigationBarTitleDisplayMode()
+        } label: {
+          Label("Image List", systemImage: "scroll")
+        }
+      }
+      .navigationTitle("NetworkImage")
+    }
+  }
+}
+
+struct ContentView_Previews: PreviewProvider {
+  static var previews: some View {
+    ContentView()
+  }
+}

Demo/Shared/ImageListView.swift

@@ -0,0 +1,40 @@
+import NetworkImage
+import SwiftUI
+
+struct ImageListView: View {
+  private struct Item: Identifiable {
+    let id = UUID()
+    let imageURL = URL.randomImageURL(size: .init(width: 400, height: 300))
+  }
+
+  private let items = Array(repeating: (), count: 100).map(Item.init)
+
+  var body: some View {
+    ScrollView {
+      LazyVStack {
+        ForEach(self.items) { item in
+          NetworkImage(url: item.imageURL, transaction: .init(animation: .default)) { image in
+            image.resizable().scaledToFill()
+          }
+          .aspectRatio(1.333, contentMode: .fill)
+          .clipShape(RoundedRectangle(cornerRadius: 4))
+          .overlay {
+            RoundedRectangle(cornerRadius: 4)
+              // This crashes in Xcode 15 beta 8 when running on visionOS simulator
+              // .strokeBorder(Color.primary.opacity(0.25), lineWidth: 0.5)
+              .strokeBorder(style: .init(lineWidth: 0.5))
+              .foregroundColor(Color.primary.opacity(0.25))
+
+          }
+        }
+      }
+      .padding()
+    }
+  }
+}
+
+struct ImageListView_Previews: PreviewProvider {
+  static var previews: some View {
+    ImageListView()
+  }
+}

Demo/Shared/SimpleExampleView.swift → Demo/Shared/ImagesView.swift

@@ -1,24 +1,21 @@
 import NetworkImage
 import SwiftUI
 
-struct SimpleExampleView: View {
-  private var content: some View {
-    VStack {
+struct ImagesView: View {
+  var body: some View {
+    Form {
       NetworkImage(url: URL(string: "https://picsum.photos/id/1025/300/200"))
         .frame(width: 200, height: 200)
         .clipShape(RoundedRectangle(cornerRadius: 8))
       NetworkImage(url: URL(string: "https://picsum.photos/id/237/300/200"))
         .frame(width: 200, height: 200)
         .clipShape(RoundedRectangle(cornerRadius: 8))
     }
-    .navigationTitle("Displaying Network Images")
   }
+}
 
-  var body: some View {
-    #if os(iOS)
-      content.navigationBarTitleDisplayMode(.inline)
-    #else
-      content
-    #endif
+struct ImagesView_Previews: PreviewProvider {
+  static var previews: some View {
+    ImagesView()
   }
 }

Demo/Shared/InlineNavigationBarTitleDisplayModeModifier.swift

@@ -0,0 +1,17 @@
+import SwiftUI
+
+extension View {
+  func inlineNavigationBarTitleDisplayMode() -> some View {
+    self.modifier(InlineNavigationBarTitleDisplayModeModifier())
+  }
+}
+
+struct InlineNavigationBarTitleDisplayModeModifier: ViewModifier {
+  func body(content: Content) -> some View {
+    #if os(iOS) || os(watchOS)
+      content.navigationBarTitleDisplayMode(.inline)
+    #else
+      content
+    #endif
+  }
+}

Demo/Shared/NetworkImageDemoApp.swift

@@ -4,9 +4,7 @@ import SwiftUI
 struct NetworkImageDemoApp: App {
   var body: some Scene {
     WindowGroup {
-      NavigationView {
-        ExampleList()
-      }
+      ContentView()
     }
   }
 }