Implement RenderImage and Image for Sky

sky/sdk/lib/framework/fn2.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.
 
 library fn;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:mirrors';
 import 'dart:sky' as sky;
 import 'reflect.dart' as reflect;
 import 'app.dart';
 import 'rendering/render_block.dart';
 import 'rendering/render_box.dart';
 import 'rendering/render_flex.dart';
+import 'rendering/render_image.dart';
 import 'rendering/render_node.dart';
 import 'rendering/render_paragraph.dart';
 
 // final sky.Tracing _tracing = sky.window.tracing;
 
 final bool _shouldLogRenderDuration = false;
 final bool _shouldTrace = false;
 
 enum _SyncOperation { IDENTICAL, INSERTION, STATEFUL, STATELESS, REMOVAL }
 
@@ skipping 512 matching lines @@
     root.direction = direction;
   }
 }
 
 class FlexExpandingChild extends ParentDataNode {
   FlexExpandingChild(UINode content, [int flex = 1])
     : super(content, new FlexBoxParentData()..flex = flex);
 }
 
 class Image extends RenderNodeWrapper {
-  RenderCSSImage root;
-  RenderCSSImage createNode() => new RenderCSSImage(this, this.src, this.width, this.height);
+  RenderImage root;
+  RenderImage createNode() => new RenderImage(this.src, this.width, this.height);
+
+  static final Image _emptyImage = new Image();
+
+  RenderNodeWrapper get emptyNode => _emptyImage;

[abarth-chromium, 2015/06/03 00:07:53]

We don't need _emptyImage or emptyNode anymore.

[jackson, 2015/06/03 17:41:42]

Acknowledged.

 
   final String src;
-  final int width;
-  final int height;
+  final double width;
+  final double height;
 
   Image({
     Object key,
     this.width,
     this.height,
     this.src
   }) : super(key: key);
 
   void syncRenderNode(UINode old) {
     super.syncRenderNode(old);
@@ skipping 289 matching lines @@
 
 class Rectangle extends RenderNodeWrapper {
   RenderSolidColor root;
   RenderSolidColor createNode() =>
       new RenderSolidColor(color, desiredSize: new sky.Size(40.0, 130.0));
 
   final int color;
 
   Rectangle(this.color, { Object key }) : super(key: key);
 }