Add one convenient method on WebImage to associated indicator with view builder block

Author: dreampiggy

Example/Podfile.lock

@@ -8,10 +8,10 @@ PODS:
   - libwebp/mux (1.0.3):
     - libwebp/demux
   - libwebp/webp (1.0.3)
-  - SDWebImage (5.2.3):
-    - SDWebImage/Core (= 5.2.3)
-  - SDWebImage/Core (5.2.3)
-  - SDWebImageSwiftUI (0.4.2):
+  - SDWebImage (5.2.5):
+    - SDWebImage/Core (= 5.2.5)
+  - SDWebImage/Core (5.2.5)
+  - SDWebImageSwiftUI (0.5.2):
     - SDWebImage (~> 5.1)
   - SDWebImageWebPCoder (0.2.5):
     - libwebp (~> 1.0)
@@ -33,8 +33,8 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   libwebp: 057912d6d0abfb6357d8bb05c0ea470301f5d61e
-  SDWebImage: 46a7f73228f84ce80990c786e4372cf4db5875ce
-  SDWebImageSwiftUI: b91be76ecb0cdf74c18f6cd92aae8f19a9ded02d
+  SDWebImage: 4eabf2fa6695c95c47724214417a9c036c965e4a
+  SDWebImageSwiftUI: 3a3e3aa707aeedf024af6f9c718177f681edf9de
   SDWebImageWebPCoder: 947093edd1349d820c40afbd9f42acb6cdecd987
 
 PODFILE CHECKSUM: 3fb06a5173225e197f3a4bf2be7e5586a693257a

Example/SDWebImageSwiftUIDemo/DetailView.swift

@@ -62,13 +62,11 @@ struct DetailView: View {
                 .scaledToFit()
                 #else
                 WebImage(url: URL(string:url), options: [.progressiveLoad])
-                .indicator(
-                    Indicator { isAnimating, progress in
-                        ProgressBar(value: progress)
-                        .foregroundColor(.blue)
-                        .frame(maxHeight: 6)
-                    }
-                )
+                .indicator { isAnimating, progress in
+                    ProgressBar(value: progress)
+                    .foregroundColor(.blue)
+                    .frame(maxHeight: 6)
+                }
                 .resizable()
                 .scaledToFit()
                 #endif

SDWebImageSwiftUI/Classes/WebImage.swift

@@ -179,6 +179,14 @@ extension WebImage {
         result.indicator = indicator
         return result
     }
+    
+    /// Associate a indicator when loading image with url, convenient method with block
+    /// - Parameter indicator: The indicator type, see `Indicator`
+    public func indicator<T>(@ViewBuilder builder: @escaping (_ isAnimating: Binding<Bool>, _ progress: Binding<CGFloat>) -> T) -> WebImage where T : View {
+        var result = self
+        result.indicator = Indicator(builder: builder)
+        return result
+    }
 }
 
 #if DEBUG