Split Size into Size and Offset.

sky/sdk/lib/widgets/ink_well.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 'dart:math' as math;
 import 'dart:sky' as sky;
 
 import '../animation/animated_value.dart';
 import '../animation/curves.dart';
 import '../rendering/box.dart';
@@ skipping 37 matching lines @@
 
   void _handleRadiusChange() {
     if (_radius.value == _targetRadius)
       well._splashes.remove(this);
     well.markNeedsPaint();
   }
 
   void paint(RenderCanvas canvas) {
     int opacity = (_kSplashInitialOpacity * (1.0 - (_radius.value / _targetRadius))).floor();
     sky.Paint paint = new sky.Paint()..color = new sky.Color(opacity << 24);
-    canvas.drawCircle(position.x, position.y, _radius.value, paint);
+    canvas.drawCircle(position, _radius.value, paint);
   }
 }
 
 class RenderInkWell extends RenderProxyBox {
   RenderInkWell({ RenderBox child }) : super(child);
 
   final List<InkSplash> _splashes = new List<InkSplash>();
 
   void handleEvent(sky.Event event, BoxHitTestEntry entry) {
     if (event is sky.GestureEvent) {
@@ skipping 31 matching lines @@
   }
 }
 
 class InkWell extends OneChildRenderObjectWrapper {
   InkWell({ String key, Widget child })
     : super(key: key, child: child);
 
   RenderInkWell get root => super.root;
   RenderInkWell createNode() => new RenderInkWell();
 }