Make the Cards in DemoLauncher.apk splash on touch.

sky/sdk/example/demo_launcher/lib/main.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'package:sky/mojo/activity.dart' as activity;
 import 'package:sky/mojo/asset_bundle.dart';
 import 'package:sky/painting/box_painter.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/theme/typography.dart' as typography;
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/card.dart';
 import 'package:sky/widgets/material.dart';
 import 'package:sky/widgets/scaffold.dart';
 import 'package:sky/widgets/task_description.dart';
 import 'package:sky/widgets/theme.dart';
 import 'package:sky/widgets/tool_bar.dart';
 import 'package:sky/widgets/scrollable_list.dart';
+import 'package:sky/widgets/ink_well.dart';
 
 AssetBundle _initBundle() {
   if (rootBundle != null)
     return rootBundle;
   const String _kAssetBase = '..';
   return new NetworkAssetBundle(Uri.base.resolve(_kAssetBase));
 }
 
 final AssetBundle _bundle = _initBundle();
 
@@ skipping 78 matching lines @@
     textTheme: typography.black,
     decoration: new BoxDecoration(
       backgroundColor: colors.black,
       backgroundImage: new BackgroundImage(
         image: _bundle.loadImage('assets/sector_thumbnail.png'),
         fit: BackgroundFit.cover
       )
     )
   ),
   // new SkyDemo(
+
   //   'Touch Demo', '../../rendering/touch_demo.dart', 'Simple example showing handling of touch events at a low level'),
   new SkyDemo(
     name: 'Minedigger Game',
     href: '../../mine_digger/lib/main.dart',
     bundle: 'mine_digger.skyx',
     description: 'Clone of the classic Minesweeper game',
     textTheme: typography.white
   ),
 
   // TODO(jackson): This doesn't seem to be working
   // new SkyDemo('Licenses', 'LICENSES.sky'),
 ];
 
 const double kCardHeight = 120.0;
 const EdgeDims kListPadding = const EdgeDims.all(4.0);
 
 class DemoList extends Component {
+  Widget buildCardContents(SkyDemo demo) {
+      return new Container(
+        decoration: demo.decoration,
+        child: new InkWell(
+          child: new Container(
+            margin: const EdgeDims.all(24.0),
+            child: new Flex([
+              new Text(demo.name, style: demo.textTheme.title),
+              new Flexible(
+                child: new Text(demo.description, style: demo.textTheme.subhead)
+              )
+            ],
+            direction: FlexDirection.vertical,
+            alignItems: FlexAlignItems.start)
+          )
+        )
+    );
+  }
+
   Widget buildDemo(SkyDemo demo) {
     return new Listener(
       key: demo.name,
       onGestureTap: (_) => launch(demo.href, demo.bundle),
       child: new Container(
         height: kCardHeight,
         child: new Card(
-          child: new Flex([
-            new Flexible(
-              child: new Stack([
-                new Container(
-                  decoration: demo.decoration,
-                  child: new Container()
-                ),
-                new Container(
-                  margin: const EdgeDims.all(24.0),
-                  child: new Flex([
-                      new Text(demo.name, style: demo.textTheme.title),
-                      new Flexible(
-                        child: new Text(demo.description, style: demo.textTheme.subhead)
-                      )
-                    ],
-                    direction: FlexDirection.vertical,
-                    alignItems: FlexAlignItems.start)
-                )
-              ])
-            ),
-          ], direction: FlexDirection.vertical)
+          child: buildCardContents(demo)
         )
       )
     );
   }
 
   Widget build() {
     return new ScrollableList<SkyDemo>(
       items: demos,
       itemHeight: kCardHeight,
       itemBuilder: buildDemo,
@@ skipping 19 matching lines @@
           )
         )
       )
     );
   }
 }
 
 void main() {
   runApp(new SkyHome());
 }