Attempt to make our splashes closer to other Android apps

And also Material Design of course.

@abarth

examples/stocks/lib/stock_row.dart

@@ -38,29 +38,27 @@ class StockRow extends Component {
     ];
 
     // TODO(hansmuller): An explicit |height| shouldn't be needed
-    return new InkWell(
-      child: new Container(
-        padding: const EdgeDims(16.0, 16.0, 20.0, 16.0),
-        height: kHeight,
-        decoration: new BoxDecoration(
-          border: new Border(
-            bottom: new BorderSide(color: Theme.of(this).dividerColor)
-          )
+    return new Container(
+      padding: const EdgeDims(16.0, 16.0, 20.0, 16.0),
+      height: kHeight,
+      decoration: new BoxDecoration(
+        border: new Border(
+          bottom: new BorderSide(color: Theme.of(this).dividerColor)
+        )
+      ),
+      child: new Flex([
+        new Container(
+          child: new StockArrow(percentChange: stock.percentChange),
+          margin: const EdgeDims.only(right: 5.0)
         ),
-        child: new Flex([
-          new Container(
-            child: new StockArrow(percentChange: stock.percentChange),
-            margin: const EdgeDims.only(right: 5.0)
-          ),
-          new Flexible(
-            child: new Flex(
-              children,
-              alignItems: FlexAlignItems.baseline,
-              textBaseline: DefaultTextStyle.of(this).textBaseline
-            )
+        new Flexible(
+          child: new Flex(
+            children,
+            alignItems: FlexAlignItems.baseline,
+            textBaseline: DefaultTextStyle.of(this).textBaseline
           )
-        ])
-      )
+        )
+      ])
     );
   }
 }

packages/flutter/lib/theme/theme_data.dart

@@ -26,8 +26,15 @@ class ThemeData {
       // Some users want the pre-multiplied color, others just want the opacity.
       hintColor = brightness == ThemeBrightness.dark ? const Color(0x42FFFFFF) : const Color(0x4C000000),
       hintOpacity = brightness == ThemeBrightness.dark ? 0.26 : 0.30,
-      highlightColor = const Color(0x66999999),
-      selectedColor = const Color(0x33999999),
+      // TODO(eseidel): Where are highlight and selected colors documented?
+      // I flipped highlight/selected to match the News app (which is clearly not quite Material)
+      // Gmail has an interesting behavior of showing selected darker until
+      // you click on a different drawer item when the first one loses its
+      // selected color and becomes lighter, the ink then fills to make the new
+      // click dark to match the previous (resting) selected state.  States
+      // revert when you cancel the tap.
+      highlightColor = const Color(0x33999999),
+      selectedColor = const Color(0x66999999),
       text = brightness == ThemeBrightness.dark ? typography.white : typography.black {
     assert(brightness != null);
 

packages/flutter/lib/widgets/ink_well.dart

@@ -13,11 +13,11 @@ import 'package:sky/rendering/object.dart';
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/framework.dart';
 
-const int _kSplashInitialOpacity = 0x80;
-const double _kSplashCancelledVelocity = 0.3;
-const double _kSplashConfirmedVelocity = 0.3;
+const int _kSplashInitialOpacity = 0x30;
+const double _kSplashCancelledVelocity = 0.7;
+const double _kSplashConfirmedVelocity = 0.7;
 const double _kSplashInitialSize = 0.0;
-const double _kSplashUnconfirmedVelocity = 0.1;
+const double _kSplashUnconfirmedVelocity = 0.2;
 
 double _getSplashTargetSize(Size bounds, Point position) {
   double d1 = (position - bounds.topLeft(Point.origin)).distance;
@@ -72,7 +72,7 @@ class InkSplash {
   }
 
   void paint(PaintingCanvas canvas) {
-    int opacity = (_kSplashInitialOpacity * (1.0 - (_radius.value / _targetRadius))).floor();
+    int opacity = (_kSplashInitialOpacity * (1.1 - (_radius.value / _targetRadius))).floor();
     sky.Paint paint = new sky.Paint()..color = new sky.Color(opacity << 24);
     double radius = _pinnedRadius == null ? _radius.value : _pinnedRadius;
     canvas.drawCircle(position, radius, paint);