Removing Element.rect.

samples/solar/solar.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * A solar system visualization.
  */
 
 library solar;
 
@@ skipping 51 matching lines @@
   SolarSystem(this.canvas) {
 
   }
 
   num get width => _width;
 
   num get height => _height;
 
   start() {
     // Measure the canvas element.
-    canvas.parent.rect.then((ElementRect rect) {
-      _width = rect.client.width;
-      _height = rect.client.height;
+    window.requestLayoutFrame(() {
+      _width = canvas.parent.clientWidth;
+      _height = canvas.parent.clientHeight;
 
       canvas.width = _width;
 
       // Initialize the planets and start the simulation.
       _start();
     });
   }
 
   _start() {
     // Create the Sun.
@@ skipping 185 matching lines @@
     } else {
       num angle = solarSystem.renderTime * orbitSpeed;
 
       return new Point(
         orbitRadius * cos(angle) + x,
         orbitRadius * sin(angle) + y);
     }
   }
 
 }