New gallery app bar background (#4539)

dev/benchmarks/complex_layout/pubspec.yaml

@@ -11,7 +11,7 @@ dependencies:
   flutter_gallery_assets:
     git:
       url: https://flutter.googlesource.com/gallery-assets
-      ref: 5c9118f9e6005c9fef6f1a340e5c475494c2ba80
+      ref: ea2c9c344c8b6b318341590e2af0707f8a6649f1
 
 dev_dependencies:
   flutter_test:

dev/manual_tests/pubspec.yaml

@@ -9,7 +9,7 @@ dependencies:
   flutter_gallery_assets:
     git:
       url: https://flutter.googlesource.com/gallery-assets
-      ref: 5c9118f9e6005c9fef6f1a340e5c475494c2ba80
+      ref: ea2c9c344c8b6b318341590e2af0707f8a6649f1
 
 dev_dependencies:
   test: any # flutter_test provides the version constraints

examples/flutter_gallery/flutter.yaml

@@ -8,6 +8,7 @@ assets:
   - assets/section_components.png
   - assets/section_patterns.png
   - assets/section_usability.png
+  - packages/flutter_gallery_assets/appbar_background.jpg
   - packages/flutter_gallery_assets/pesto/avatar.jpg
   - packages/flutter_gallery_assets/pesto/image10.jpg
   - packages/flutter_gallery_assets/pesto/image11.jpg

examples/flutter_gallery/lib/demo/icons_demo.dart

@@ -34,7 +34,7 @@ class IconsDemoState extends State<IconsDemo> {
     Colors.blueGrey
   ];
 
-  int iconColorIndex = 2;
+  int iconColorIndex = 9; // green
   double iconOpacity = 1.0;
 
   Color get iconColor => iconColorSwatches[iconColorIndex][400];

examples/flutter_gallery/lib/gallery/app.dart

@@ -46,12 +46,12 @@ final Map<String, WidgetBuilder> kRoutes = <String, WidgetBuilder>{
 
 final ThemeData _kGalleryLightTheme = new ThemeData(
   brightness: Brightness.light,
-  primarySwatch: Colors.purple
+  primarySwatch: Colors.green
 );
 
 final ThemeData _kGalleryDarkTheme = new ThemeData(
   brightness: Brightness.dark,
-  primarySwatch: Colors.purple
+  primarySwatch: Colors.green
 );
 
 class GalleryApp extends StatefulWidget {

examples/flutter_gallery/lib/gallery/home.dart

@@ -59,6 +59,11 @@ class GalleryHomeState extends State<GalleryHome> {
       appBar: new AppBar(
         expandedHeight: _kFlexibleSpaceMaxHeight,
         flexibleSpace: new FlexibleSpaceBar(
+          background: new AssetImage(
+            name: 'packages/flutter_gallery_assets/appbar_background.jpg',
+            fit: ImageFit.cover,
+            height: _kFlexibleSpaceMaxHeight
+          ),
           title: new Text('Flutter gallery')
         )
       ),

examples/flutter_gallery/pubspec.yaml

@@ -13,7 +13,7 @@ dependencies:
   flutter_gallery_assets:
     git:
       url: https://flutter.googlesource.com/gallery-assets
-      ref: 5c9118f9e6005c9fef6f1a340e5c475494c2ba80
+      ref: ea2c9c344c8b6b318341590e2af0707f8a6649f1
 
 dev_dependencies:
   test: any # flutter_test provides the version constraints