Merge pull request #177 from SDWebImage/fix_image_sturct_from_uiimage

Fix the issue that using `Image(uiimage:)` will result wrong rendering mode in some component like `TabbarItem`, while using `Image(decorative:sclae:orientation:)` works well

Author: dreampiggy

Diff for: SDWebImageSwiftUI/Classes/WebImage.swift

@@ -123,8 +123,8 @@ public struct WebImage : View {
         #if os(macOS)
         result = Image(nsImage: image)
         #else
-        // Fix the SwiftUI.Image rendering issue, like when use EXIF UIImage, the `.aspectRatio` does not works. SwiftUI's Bug :)
-        // See issue #101
+        // Fix the SwiftUI.Image rendering issue, like when use EXIF UIImage, the `.aspectRatio` does not works. SwiftUI's Bug :). See #101
+        // Always prefers `Image(decorative:scale:)` but not `Image(uiImage:scale:) to avoid bug on `TabbarItem`. See #175
         var cgImage: CGImage?
         // Case 1: Vector Image, draw bitmap image
         if image.sd_isVector {
@@ -144,15 +144,8 @@ public struct WebImage : View {
                 cgImage = image.cgImage
             }
         } else {
-            // Case 2: Image with EXIF orientation (only EXIF 5-8 contains bug)
-            if [.left, .leftMirrored, .right, .rightMirrored].contains(image.imageOrientation) {
-                // Fixed by Apple in iOS 14+
-                if #available(iOS 14.0, watchOS 7.0, tvOS 14.0, *) {
-                    // Do nothing
-                } else {
-                    cgImage = image.cgImage
-                }
-            }
+            // Case 2: EXIF Image and Bitmap Image, prefers CGImage
+            cgImage = image.cgImage
         }
         // If we have CGImage, use CGImage based API, else use UIImage based API
         if let cgImage = cgImage {

Diff for: Tests/WebImageTests.swift

@@ -22,10 +22,10 @@ class WebImageTests: XCTestCase {
         let imageUrl = URL(string: "https://nr-platform.s3.amazonaws.com/uploads/platform/published_extension/branding_icon/275/AmazonS3.png")
         let imageView = WebImage(url: imageUrl)
         let introspectView = imageView.onSuccess { image, data, cacheType in
-            #if os(iOS) || os(tvOS)
-            let displayImage = try? imageView.inspect().group().image(0).uiImage()
-            #else
+            #if os(macOS)
             let displayImage = try? imageView.inspect().group().image(0).nsImage()
+            #else
+            let displayImage = try? imageView.inspect().group().image(0).cgImage()
             #endif
             XCTAssertNotNil(displayImage)
             expectation.fulfill()
@@ -46,15 +46,17 @@ class WebImageTests: XCTestCase {
         let introspectView = imageView.onSuccess { image, data, cacheType in
             if let animatedImage = image as? SDAnimatedImage {
                 XCTAssertTrue(imageView.isAnimating)
-                #if os(iOS) || os(tvOS)
-                let displayImage = try? imageView.inspect().group().image(0).uiImage()
-                #else
+                #if os(macOS)
                 let displayImage = try? imageView.inspect().group().image(0).nsImage()
+                let size = displayImage?.size
+                #else
+                let displayImage = try? imageView.inspect().group().image(0).cgImage()
+                let size = CGSize(width: displayImage?.width ?? 0, height: displayImage?.height ?? 0)
                 #endif
                 XCTAssertNotNil(displayImage)
                 // Check display image should match the animated poster frame
                 let posterImage = animatedImage.animatedImageFrame(at: 0)
-                XCTAssertEqual(displayImage?.size, posterImage?.size)
+                XCTAssertEqual(size, posterImage?.size)
                 expectation.fulfill()
             } else {
                 XCTFail("WebImage animated image invalid")
@@ -162,15 +164,10 @@ class WebImageTests: XCTestCase {
             let displayImage = try? imageView.inspect().group().image(0).nsImage()
             XCTAssertNotNil(displayImage)
             #else
-            if #available(iOS 14.0, watchOS 7.0, tvOS 14.0, *) {
-                let displayImage = try? imageView.inspect().group().image(0).uiImage()
-                XCTAssertEqual(displayImage, image)
-            } else {
-                let displayImage = try? imageView.inspect().group().image(0).cgImage()
-                let orientation = try? imageView.inspect().group().image(0).orientation()
-                XCTAssertNotNil(displayImage)
-                XCTAssertEqual(orientation, .leftMirrored)
-            }
+            let displayImage = try? imageView.inspect().group().image(0).cgImage()
+            let orientation = try? imageView.inspect().group().image(0).orientation()
+            XCTAssertNotNil(displayImage)
+            XCTAssertEqual(orientation, .leftMirrored)
             #endif
             expectation.fulfill()
         }.onFailure { error in