🍱 Add resources/transparentImage.gif

Author: ValentinVignal

packages/google_sign_in/google_sign_in/lib/widgets.dart

@@ -115,11 +115,13 @@ class GoogleUserCircleAvatar extends StatelessWidget {
 }
 
 /// This is an transparent 1x1 gif image.
+///
+/// Those bytes come from `resources/transparentImage.dart`.
 final Uint8List _transparentImage = Uint8List.fromList(
   [
     0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0x80, 0x00, //
-    0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x00, //
+    0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x21, 0xf9, 0x04, 0x01, 0x00, //
     0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, //
-    0x00, 0x02, 0x02, 0x44, 0x01, 0x00, 0x3B
+    0x00, 0x02, 0x01, 0x44, 0x00, 0x3B
   ],
 );

packages/google_sign_in/google_sign_in/resources/README.md

@@ -0,0 +1,7 @@
+`transparentImage.gif` is a 1x1 transparent gif which comes from [this wikimedia page](https://commons.wikimedia.org/wiki/File:Transparent.gif):
+
+![](transparentImage.gif)
+
+This is the image used a placeholder for the `GoogleCircleAvatar` widget.
+
+The variable `_transparentImage` in `lib/widgets.dart` is the list of bytes of `transparentImage.gif`.

packages/google_sign_in/google_sign_in/resources/transparentImage.gif

@@ -53,12 +53,14 @@ class _MockHttpRequest extends Fake implements HttpClientRequest {
 ///
 /// This is an transparent 1x1 gif image.
 /// It doesn't have to match the placeholder used in [GoogleUserCircleAvatar].
+///
+/// Those bytes come from `resources/transparentImage.dart`.
 final Uint8List _transparentImage = Uint8List.fromList(
   [
     0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0x80, 0x00, //
-    0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x00, //
+    0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x21, 0xf9, 0x04, 0x01, 0x00, //
     0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, //
-    0x00, 0x02, 0x02, 0x44, 0x01, 0x00, 0x3B //
+    0x00, 0x02, 0x01, 0x44, 0x00, 0x3B
   ],
 );