added ToolBar.withSizeOffsets()

examples/widgets/card_collection.dart

@@ -268,15 +268,14 @@ class CardCollectionState extends State<CardCollection> {
   Widget buildToolBar() {
     return new ToolBar(
       left: new IconButton(icon: "navigation/menu", onPressed: _showDrawer),
-      center: new Text('Swipe Away'),
       right: <Widget>[
         new Text(_dismissDirectionText(_dismissDirection))
       ],
       bottom: new Padding(
-        padding: const EdgeDims.only(left: 32.0),
+        padding: const EdgeDims.only(left: 72.0),
         child: new Align(
           alignment: const FractionalOffset(0.0, 0.5),
-          child: new Text("Remaining items: ${_cardModels.length}")
+          child: new Text('Swipe Away: ${_cardModels.length}')
         )
       )
     );

packages/flutter/lib/src/material/dropdown.dart

@@ -218,18 +218,18 @@ class DropdownButton<T> extends StatelessComponent {
     return new GestureDetector(
       child: new Container(
         decoration: new BoxDecoration(border: _kDropdownUnderline),
-        child: new IntrinsicWidth(
-          child: new Row(<Widget>[
-            new IndexedStack(items,
-              key: indexedStackKey,
-              index: selectedIndex,
-              alignment: const FractionalOffset(0.5, 0.0)
-            ),
-            new Container(
-              child: new Icon(icon: 'navigation/arrow_drop_down', size: IconSize.s36),
-              padding: const EdgeDims.only(top: 6.0)
-            )
-          ])
+        child: new Row(<Widget>[
+          new IndexedStack(items,
+            key: indexedStackKey,
+            index: selectedIndex,
+            alignment: const FractionalOffset(0.5, 0.0)
+          ),
+          new Container(
+            child: new Icon(icon: 'navigation/arrow_drop_down', size: IconSize.s36),
+            padding: const EdgeDims.only(top: 6.0)
+          )
+        ],
+          justifyContent: FlexJustifyContent.collapse
         )
       ),
       onTap: () {

packages/flutter/lib/src/material/scaffold.dart

@@ -10,8 +10,8 @@ import 'package:flutter/widgets.dart';
 import 'constants.dart';
 import 'material.dart';
 
-const int _kToolBarIndex = 1;
 const int _kBodyIndex = 0;
+const int _kToolBarIndex = 1;
 
 // This layout has the same effect as putting the toolbar and body in a column
 // and making the body flexible. What's different is that in this case the
@@ -22,18 +22,17 @@ class _ToolBarAndBodyLayout extends MultiChildLayoutDelegate {
     assert(childCount == 2);
     final BoxConstraints toolBarConstraints = constraints.loosen().tightenWidth(size.width);
     final Size toolBarSize = layoutChild(_kToolBarIndex, toolBarConstraints);
-    final double topPadding = ui.window.padding.top;
-    final double bodyHeight = size.height - toolBarSize.height - topPadding;
+    final double bodyHeight = size.height - toolBarSize.height;
     final BoxConstraints bodyConstraints = toolBarConstraints.tightenHeight(bodyHeight);
     layoutChild(_kBodyIndex, bodyConstraints);
-    positionChild(_kToolBarIndex, new Point(0.0, topPadding));
-    positionChild(_kBodyIndex, new Point(0.0, topPadding + toolBarSize.height));
+    positionChild(_kToolBarIndex, Point.origin);
+    positionChild(_kBodyIndex, new Point(0.0, toolBarSize.height));
   }
 }
 
-class Scaffold extends StatelessComponent {
-  final _ToolBarAndBodyLayout _toolBarAndBodyLayout = new _ToolBarAndBodyLayout();
+final _ToolBarAndBodyLayout _toolBarAndBodyLayout = new _ToolBarAndBodyLayout();
 
+class Scaffold extends StatelessComponent {
   Scaffold({
     Key key,
     this.body,
@@ -48,14 +47,15 @@ class Scaffold extends StatelessComponent {
   final Widget floatingActionButton;
 
   Widget build(BuildContext context) {
+    final offsetToolBar = toolBar?.withSizeOffsets(new EdgeDims.only(top: ui.window.padding.top));
     final Widget materialBody = body != null ? new Material(child: body) : null;
     Widget toolBarAndBody;
-    if (toolBar != null && materialBody != null)
-      toolBarAndBody = new CustomMultiChildLayout(<Widget>[materialBody, toolBar],
+    if (offsetToolBar != null && materialBody != null)
+      toolBarAndBody = new CustomMultiChildLayout(<Widget>[materialBody, offsetToolBar],
         delegate: _toolBarAndBodyLayout
       );
     else
-      toolBarAndBody = toolBar ?? materialBody;
+      toolBarAndBody = offsetToolBar ?? materialBody;
 
     final List<Widget> bottomColumnChildren = <Widget>[];
 

packages/flutter/lib/src/material/tool_bar.dart

@@ -20,7 +20,8 @@ class ToolBar extends StatelessComponent {
     this.bottom,
     this.level: 2,
     this.backgroundColor,
-    this.textTheme
+    this.textTheme,
+    this.sizeOffsets: EdgeDims.zero
   }) : super(key: key);
 
   final Widget left;
@@ -30,6 +31,21 @@ class ToolBar extends StatelessComponent {
   final int level;
   final Color backgroundColor;
   final TextTheme textTheme;
+  final EdgeDims sizeOffsets;
+
+  ToolBar withSizeOffsets(EdgeDims offsets) {
+    return new ToolBar(
+      key: key,
+      left: left,
+      center: center,
+      right: right,
+      bottom: bottom,
+      level: level,
+      backgroundColor: backgroundColor,
+      textTheme: textTheme,
+      sizeOffsets: offsets
+    );
+  }
 
   Widget build(BuildContext context) {
     Color color = backgroundColor;
@@ -83,7 +99,7 @@ class ToolBar extends StatelessComponent {
       ),
       child: new DefaultTextStyle(
         style: sideStyle,
-        child: new IntrinsicHeight(child: new Column(columnChildren))
+        child: new Container(padding: sizeOffsets, child: new Column(columnChildren, justifyContent: FlexJustifyContent.collapse))
       )
     );