Updated charted DEP to 0.4.X

packages/charted/lib/core/utils/rect.dart

 //
 // Copyright 2014 Google Inc. All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd
 //
 
 part of charted.core.utils;
 
 /// Interface representing size and position of an element
 class Rect {
-  final num x;
-  final num y;
-  final num width;
-  final num height;
+  final num _x;
+  final num _y;
+  final num _width;
+  final num _height;
 
-  const Rect([this.x = 0, this.y = 0, this.width = 0, this.height = 0]);
-  const Rect.size(this.width, this.height)
-      : x = 0,
-        y = 0;
-  const Rect.position(this.x, this.y)
-      : width = 0,
-        height = 0;
+  num get x => _x;
+  num get y => _y;
+  num get width => _width;
+  num get height => _height;
+
+  const Rect([this._x = 0, this._y = 0, this._width = 0, this._height = 0]);
+  const Rect.size(this._width, this._height)
+      : _x = 0,
+        _y = 0;
+  const Rect.position(this._x, this._y)
+      : _width = 0,
+        _height = 0;
 
   bool isSameSizeAs(Rect other) =>
       other != null && width == other.width && height == other.height;
 
   bool isSamePositionAs(Rect other) =>
       other != null && x == other.x && y == other.y;
 
   bool contains(num otherX, num otherY) =>
       otherX >= x && otherX <= x + width && otherY >= y && otherY <= y + height;
 
@@ skipping 30 matching lines @@
   @override
   bool operator ==(other) => other is AbsoluteRect &&
       start == other.start &&
       end == other.end &&
       top == other.top &&
       bottom == other.bottom;
 
   @override
   int get hashCode => hash4(start, end, top, bottom);
 }