Change watchOS private content mode API with property syntax, better for Swift

Author: dreampiggy

SDWebImageSwiftUI/Classes/AnimatedImage.swift

@@ -330,10 +330,8 @@ public struct AnimatedImage : PlatformViewRepresentable {
 
         #if os(macOS)
         view.wrapped.imageScaling = contentMode
-        #elseif os(iOS) || os(tvOS)
+        #else
         view.wrapped.contentMode = contentMode
-        #elseif os(watchOS)
-        view.wrapped.setContentMode(contentMode)
         #endif
 
         // Animated Image does not support resizing mode and rendering mode

SDWebImageSwiftUI/Classes/ObjC/SDAnimatedImageInterface.h

@@ -15,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
 @interface SDAnimatedImageInterface : WKInterfaceImage
 
 @property (nonatomic, assign, getter=isAnimating, readonly) BOOL animating;
+@property (nonatomic, assign) SDImageScaleMode contentMode;
 @property (nonatomic, strong, nullable) NSNumber *animationRepeatCount;
 @property (nonatomic, copy) NSRunLoopMode runLoopMode;
 @property (nonatomic, assign) BOOL resetFrameIndexWhenStopped;
@@ -23,10 +24,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (instancetype)init WK_AVAILABLE_WATCHOS_ONLY(6.0);
 
-/// Set the content mode for image
-/// @param contentMode The contrent mode
-- (void)setContentMode:(SDImageScaleMode)contentMode;
-
 /// Trigger the animation check when view appears/disappears
 - (void)updateAnimation;
 

SDWebImageSwiftUI/Classes/ObjC/SDAnimatedImageInterface.m

@@ -174,7 +174,7 @@ - (void)displayLayer:(id<CALayerProtocol>)layer {
 
 // on watchOS, it's the native imageView itself's layer
 - (id<CALayerProtocol>)imageViewLayer {
-    return [[self _interfaceView] layer];
+    return [self _interfaceView].layer;
 }
 
 - (void)updateShouldAnimate
@@ -216,6 +216,10 @@ - (void)setContentMode:(SDImageScaleMode)contentMode {
     [self _interfaceView].contentMode = contentMode;
 }
 
+- (SDImageScaleMode)contentMode {
+    return [self _interfaceView].contentMode;
+}
+
 @end
 
 #pragma mark - Web Cache