Make the package build for watchOS

.github/workflows/main.yml

@@ -5,15 +5,28 @@ on:
     branches: [main]
 
 jobs:
+  build-platforms:
+    runs-on: macos-26
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [iOS, tvOS, visionOS, watchOS]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build for ${{ matrix.platform }}
+        run: xcodebuild -scheme HandySwiftUI -destination 'generic/platform=${{ matrix.platform }}' CODE_SIGNING_ALLOWED=NO build
+
   test-macos:
     runs-on: macos-26
 
     steps:
       - uses: actions/checkout@v4
 
       - name: Build package
-        run: swift build
+        run: swift build --build-system swiftbuild
 
       - name: Run tests
         if: hashFiles('Tests/**') != ''
-        run: swift test
+        run: swift test --build-system swiftbuild

Sources/HandySwiftUI/Extensions/ColorExt.swift

@@ -7,13 +7,17 @@ import SwiftUI
 #endif
 
 // MARK: - Apple-provided colors
+// UIKit on watchOS has no semantic colors. There, the label and standard colors map to SwiftUI's own colors, which use the watchOS
+// system palette, and the colors without a watchOS counterpart (backgrounds, fills, separators, …) are not available.
 extension Color {
    // MARK: - UI Element Colors (https://developer.apple.com/documentation/uikit/uicolor/ui_element_colors)
    // MARK: Label Colors
    /// The color for text labels that contain primary content.
    public static var label: Color {
       #if os(macOS)
          return Color(NSColor.labelColor)
+      #elseif os(watchOS)
+         return .primary
       #else
          return Color(UIColor.label)
       #endif
@@ -23,31 +27,35 @@ extension Color {
    public static var secondaryLabel: Color {
       #if os(macOS)
          return Color(NSColor.secondaryLabelColor)
+      #elseif os(watchOS)
+         return .secondary
       #else
          return Color(UIColor.secondaryLabel)
       #endif
    }
 
-   /// The color for text labels that contain tertiary content.
-   public static var tertiaryLabel: Color {
-      #if os(macOS)
-         return Color(NSColor.tertiaryLabelColor)
-      #else
-         return Color(UIColor.tertiaryLabel)
-      #endif
-   }
+   #if !os(watchOS)
+      /// The color for text labels that contain tertiary content.
+      public static var tertiaryLabel: Color {
+         #if os(macOS)
+            return Color(NSColor.tertiaryLabelColor)
+         #else
+            return Color(UIColor.tertiaryLabel)
+         #endif
+      }
 
-   /// The color for text labels that contain quaternary content.
-   public static var quaternaryLabel: Color {
-      #if os(macOS)
-         return Color(NSColor.quaternaryLabelColor)
-      #else
-         return Color(UIColor.quaternaryLabel)
-      #endif
-   }
+      /// The color for text labels that contain quaternary content.
+      public static var quaternaryLabel: Color {
+         #if os(macOS)
+            return Color(NSColor.quaternaryLabelColor)
+         #else
+            return Color(UIColor.quaternaryLabel)
+         #endif
+      }
+   #endif
 
    // MARK: Fill Colors
-   #if !os(tvOS)
+   #if !os(tvOS) && !os(watchOS)
       /// An overlay fill color for thin and small shapes.
       public static var systemFill: Color {
          #if os(macOS)
@@ -152,39 +160,45 @@ extension Color {
    #endif
 
    // MARK: Separator Colors
-   /// The color for thin borders or divider lines that allows some underlying content to be visible.
-   public static var separator: Color {
-      #if os(macOS)
-         return Color(NSColor.separatorColor)
-      #else
-         return Color(UIColor.separator)
-      #endif
-   }
+   #if !os(watchOS)
+      /// The color for thin borders or divider lines that allows some underlying content to be visible.
+      public static var separator: Color {
+         #if os(macOS)
+            return Color(NSColor.separatorColor)
+         #else
+            return Color(UIColor.separator)
+         #endif
+      }
 
-   /// The color for borders or divider lines that hides any underlying content.
-   public static var opaqueSeparator: Color {
-      #if os(macOS)
-         return Color(NSColor.separatorColor).opacity(1)
-      #else
-         return Color(UIColor.opaqueSeparator)
-      #endif
-   }
+      /// The color for borders or divider lines that hides any underlying content.
+      public static var opaqueSeparator: Color {
+         #if os(macOS)
+            return Color(NSColor.separatorColor).opacity(1)
+         #else
+            return Color(UIColor.opaqueSeparator)
+         #endif
+      }
+   #endif
 
    // MARK: Link Color
-   /// The color for links.
-   public static var link: Color {
-      #if os(macOS)
-         return Color(NSColor.linkColor)
-      #else
-         return Color(UIColor.link)
-      #endif
-   }
+   #if !os(watchOS)
+      /// The color for links.
+      public static var link: Color {
+         #if os(macOS)
+            return Color(NSColor.linkColor)
+         #else
+            return Color(UIColor.link)
+         #endif
+      }
+   #endif
 
    // MARK: - Standard Colors (https://developer.apple.com/documentation/uikit/uicolor/standard_colors)
    // MARK: Adaptable Colors
    public static var systemBlue: Color {
       #if os(macOS)
          return Color(NSColor.systemBlue)
+      #elseif os(watchOS)
+         return .blue
       #else
          return Color(UIColor.systemBlue)
       #endif
@@ -193,6 +207,8 @@ extension Color {
    public static var systemGreen: Color {
       #if os(macOS)
          return Color(NSColor.systemGreen)
+      #elseif os(watchOS)
+         return .green
       #else
          return Color(UIColor.systemGreen)
       #endif
@@ -201,6 +217,8 @@ extension Color {
    public static var systemIndigo: Color {
       #if os(macOS)
          return Color(NSColor.systemIndigo)
+      #elseif os(watchOS)
+         return .indigo
       #else
          return Color(UIColor.systemIndigo)
       #endif
@@ -209,6 +227,8 @@ extension Color {
    public static var systemOrange: Color {
       #if os(macOS)
          return Color(NSColor.systemOrange)
+      #elseif os(watchOS)
+         return .orange
       #else
          return Color(UIColor.systemOrange)
       #endif
@@ -217,6 +237,8 @@ extension Color {
    public static var systemPink: Color {
       #if os(macOS)
          return Color(NSColor.systemPink)
+      #elseif os(watchOS)
+         return .pink
       #else
          return Color(UIColor.systemPink)
       #endif
@@ -225,6 +247,8 @@ extension Color {
    public static var systemPurple: Color {
       #if os(macOS)
          return Color(NSColor.systemPurple)
+      #elseif os(watchOS)
+         return .purple
       #else
          return Color(UIColor.systemPurple)
       #endif
@@ -233,6 +257,8 @@ extension Color {
    public static var systemRed: Color {
       #if os(macOS)
          return Color(NSColor.systemRed)
+      #elseif os(watchOS)
+         return .red
       #else
          return Color(UIColor.systemRed)
       #endif
@@ -241,6 +267,8 @@ extension Color {
    public static var systemTeal: Color {
       #if os(macOS)
          return Color(NSColor.systemTeal)
+      #elseif os(watchOS)
+         return .teal
       #else
          return Color(UIColor.systemTeal)
       #endif
@@ -249,6 +277,8 @@ extension Color {
    public static var systemYellow: Color {
       #if os(macOS)
          return Color(NSColor.systemYellow)
+      #elseif os(watchOS)
+         return .yellow
       #else
          return Color(UIColor.systemYellow)
       #endif
@@ -258,12 +288,14 @@ extension Color {
    public static var systemGray: Color {
       #if os(macOS)
          return Color(NSColor.systemGray)
+      #elseif os(watchOS)
+         return .gray
       #else
          return Color(UIColor.systemGray)
       #endif
    }
 
-   #if !os(tvOS)
+   #if !os(tvOS) && !os(watchOS)
       public static var systemGray2: Color {
          #if os(macOS)
             return Color(NSColor.systemGray)

Sources/HandySwiftUI/Extensions/ImageExt.swift

@@ -1,3 +1,4 @@
+import ImageIO
 import SwiftUI
 import UniformTypeIdentifiers
 
@@ -106,35 +107,38 @@ extension Image {
    import UIKit
 
    extension UIImage {
-      /// Resizes the image to fit within the specified maximum width and height.
-      ///
-      /// - Parameters:
-      ///   - maxWidth: The maximum width for the resized image.
-      ///   - maxHeight: The maximum height for the resized image.
-      /// - Returns: A new `UIImage` instance with the resized dimensions, or `nil` if resizing fails.
-      @MainActor
-      public func resized(maxWidth: CGFloat, maxHeight: CGFloat) -> UIImage? {
-         let size = self.size
-         if size.width <= maxWidth && size.height <= maxHeight { return self }
-
-         #if os(visionOS)
-            let screenScale = 1.0
-         #else
-            let screenScale = UIScreen.main.scale
-         #endif
-         let widthRatio = (maxWidth / screenScale) / size.width
-         let heightRatio = (maxHeight / screenScale) / size.height
-         let scaleFactor = min(widthRatio, heightRatio)
-
-         let newSize = CGSize(width: size.width * scaleFactor, height: size.height * scaleFactor)
+      // watchOS has neither UIGraphicsImageRenderer nor UIScreen
+      #if !os(watchOS)
+         /// Resizes the image to fit within the specified maximum width and height.
+         ///
+         /// - Parameters:
+         ///   - maxWidth: The maximum width for the resized image.
+         ///   - maxHeight: The maximum height for the resized image.
+         /// - Returns: A new `UIImage` instance with the resized dimensions, or `nil` if resizing fails.
+         @MainActor
+         public func resized(maxWidth: CGFloat, maxHeight: CGFloat) -> UIImage? {
+            let size = self.size
+            if size.width <= maxWidth && size.height <= maxHeight { return self }
+
+            #if os(visionOS)
+               let screenScale = 1.0
+            #else
+               let screenScale = UIScreen.main.scale
+            #endif
+            let widthRatio = (maxWidth / screenScale) / size.width
+            let heightRatio = (maxHeight / screenScale) / size.height
+            let scaleFactor = min(widthRatio, heightRatio)
+
+            let newSize = CGSize(width: size.width * scaleFactor, height: size.height * scaleFactor)
+
+            let renderer = UIGraphicsImageRenderer(size: newSize)
+            let image = renderer.image { _ in
+               self.draw(in: CGRect(origin: .zero, size: newSize))
+            }
 
-         let renderer = UIGraphicsImageRenderer(size: newSize)
-         let image = renderer.image { _ in
-            self.draw(in: CGRect(origin: .zero, size: newSize))
+            return image.withRenderingMode(self.renderingMode)
          }
-
-         return image.withRenderingMode(self.renderingMode)
-      }
+      #endif
 
       /// Converts the image to HEIC data with specified compression quality.
       ///