Removing Element.rect.

samples/ui_lib/touch/Scroller.dart

 // Copyright (c) 2011, 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.
 
 /**
  * Implementation of a custom scrolling behavior.
  * This behavior overrides native scrolling for an area. This area can be a
  * single defined part of a page, the entire page, or several different parts
  * of a page.
  *
@@ skipping 523 matching lines @@
     _minOffset.x = 0;
     _minOffset.y = 0;
     reconfigure(() => _setContentOffset(_maxPoint.x, _maxPoint.y));
   }
 
   /**
    * Recalculate dimensions of the frame and the content. Adjust the minPoint
    * and maxPoint allowed for scrolling.
    */
   void _resize(Callback callback) {
-    final frameRect = _frame.rect;
-    Future contentSizeFuture;
+    window.requestLayoutFrame(() {
+      if (_lookupContentSizeDelegate !== null) {
+        _contentSize = _lookupContentSizeDelegate();
+      } else {
+        _contentSize = new Size(_element.scrollWidth, _element.scrollHeight);
+      }
 
-    if (_lookupContentSizeDelegate !== null) {
-      contentSizeFuture = _lookupContentSizeDelegate();
-      contentSizeFuture.then((Size size) {
-        _contentSize = size;
-      });
-    } else {
-      contentSizeFuture = _element.rect;
-      contentSizeFuture.then((ElementRect rect) {
-        _contentSize = new Size(rect.scroll.width, rect.scroll.height);
-      });
-    }
-
-    joinFutures(<Future>[frameRect, contentSizeFuture], () {
-      _scrollSize = new Size(frameRect.value.offset.width,
-                             frameRect.value.offset.height);
+      _scrollSize = new Size(_frame.offsetWidth,
+                             _frame.offsetHeight);
       Size adjusted = _getAdjustedContentSize();
       _maxPoint = new Coordinate(-_maxOffset.x, -_maxOffset.y);
       _minPoint = new Coordinate(
           Math.min(
               _scrollSize.width - adjusted.width + _minOffset.x, _maxPoint.x),
           Math.min(
               _scrollSize.height - adjusted.height + _minOffset.y, _maxPoint.y));
       callback();
     });
   }
@@ skipping 150 matching lines @@
     for (EventListener listener in _listeners) {
       listener(evt);
     }
   }
 }
 
 class ScrollerScrollTechnique {
   static const TRANSFORM_3D = 1;
   static const RELATIVE_POSITIONING = 2;
 }