Implement ColorFilter in widgets/basic.dart

sky/sdk/lib/widgets/basic.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:sky' as sky;
+
 import 'package:vector_math/vector_math.dart';
 
 import '../painting/text_style.dart';
 import '../rendering/block.dart';
 import '../rendering/box.dart';
 import '../rendering/flex.dart';
 import '../rendering/object.dart';
 import '../rendering/paragraph.dart';
 import '../rendering/stack.dart';
 import 'widget.dart';
@@ skipping 14 matching lines @@
   final double opacity;
 
   RenderOpacity createNode() => new RenderOpacity(opacity: opacity);
 
   void syncRenderObject(Opacity old) {
     super.syncRenderObject(old);
     root.opacity = opacity;
   }
 }
 
+class ColorFilter extends OneChildRenderObjectWrapper {
+  ColorFilter({ String key, this.color, this.transferMode, Widget child })
+    : super(key: key, child: child);
+
+  RenderColorFilter get root => super.root;
+  final Color color;
+  final sky.TransferMode transferMode;
+
+  RenderColorFilter createNode() => new RenderColorFilter(color: color, transferMode: transferMode);
+
+  void syncRenderObject(ColorFilter old) {
+    super.syncRenderObject(old);
+    root.color = color;
+    root.transferMode = transferMode;
+  }
+}
+
 class DecoratedBox extends OneChildRenderObjectWrapper {
 
   DecoratedBox({ String key, this.decoration, Widget child })
     : super(key: key, child: child);
 
   RenderDecoratedBox get root => super.root;
   final BoxDecoration decoration;
 
   RenderDecoratedBox createNode() => new RenderDecoratedBox(decoration: decoration);
 
@@ skipping 380 matching lines @@
     // WidgetToRenderBoxAdapter cannot have Widget children; by
     // definition, it is the transition out of the Widget world.
   }
 
   void remove() {
     parent.detachChildRoot(this);
     super.remove();
   }
 
 }