Import dart:ui as ui (instead of as sky)

examples/game/lib/explosions.dart

@@ -49,7 +49,7 @@ class ExplosionBig extends Explosion {
 
     // Add ring
     Sprite sprtRing = new Sprite(sheet["explosion_ring.png"]);
-    sprtRing.transferMode = sky.TransferMode.plus;
+    sprtRing.transferMode = ui.TransferMode.plus;
     addChild(sprtRing);
 
     Action scale = new ActionTween( (a) => sprtRing.scale = a, 0.2, 1.0, 0.75);
@@ -63,7 +63,7 @@ class ExplosionBig extends Explosion {
       Sprite sprtFlare = new Sprite(sheet["explosion_flare.png"]);
       sprtFlare.pivot = new Point(0.3, 1.0);
       sprtFlare.scaleX = 0.3;
-      sprtFlare.transferMode = sky.TransferMode.plus;
+      sprtFlare.transferMode = ui.TransferMode.plus;
       sprtFlare.rotation = randomDouble() * 360.0;
       addChild(sprtFlare);
 
@@ -86,7 +86,7 @@ class ExplosionMini extends Explosion {
       Sprite star = new Sprite(sheet["star_0.png"]);
       star.scale = 0.5;
       star.colorOverlay = new Color(0xff95f4fb);
-      star.transferMode = sky.TransferMode.plus;
+      star.transferMode = ui.TransferMode.plus;
       addChild(star);
 
       double rotationStart = randomDouble() * 90.0;

examples/game/lib/game_demo.dart

@@ -2,7 +2,7 @@ library game;
 
 import 'dart:async';
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'package:skysprites/skysprites.dart';

examples/game/lib/game_demo_node.dart

@@ -26,7 +26,7 @@ class GameDemoNode extends NodeWithSize {
     addChild(_starField);
 
     // Add nebula
-    _nebula = new RepeatedImage(_images["assets/nebula.png"], sky.TransferMode.plus);
+    _nebula = new RepeatedImage(_images["assets/nebula.png"], ui.TransferMode.plus);
     addChild(_nebula);
 
     // Setup game screen, it will always be anchored to the bottom of the screen

examples/game/lib/game_objects.dart

@@ -16,7 +16,7 @@ abstract class GameObject extends Node {
   Paint _paintDebug = new Paint()
     ..color=new Color(0xffff0000)
     ..strokeWidth = 1.0
-    ..setStyle(sky.PaintingStyle.stroke);
+    ..setStyle(ui.PaintingStyle.stroke);
 
   bool collidingWith(GameObject obj) {
     return (GameMath.distanceBetweenPoints(position, obj.position)
@@ -111,7 +111,7 @@ class Ship extends GameObject {
 
     _sprtShield = new Sprite(f.sheet["shield.png"]);
     _sprtShield.scale = 0.35;
-    _sprtShield.transferMode = sky.TransferMode.plus;
+    _sprtShield.transferMode = ui.TransferMode.plus;
     addChild(_sprtShield);
 
     radius = 20.0;
@@ -188,7 +188,7 @@ class Laser extends GameObject {
       Sprite sprt = new Sprite(f.sheet["explosion_particle.png"]);
       sprt.scale = 0.5;
       sprt.colorOverlay = laserColor;
-      sprt.transferMode = sky.TransferMode.plus;
+      sprt.transferMode = ui.TransferMode.plus;
       addChild(sprt);
       sprites.add(sprt);
     }

examples/game/lib/power_bar.dart

@@ -10,7 +10,7 @@ class PowerBar extends NodeWithSize {
   Paint _paintOutline = new Paint()
     ..color = new Color(0xffffffff)
     ..strokeWidth = 1.0
-    ..setStyle(sky.PaintingStyle.stroke);
+    ..setStyle(ui.PaintingStyle.stroke);
 
   void paint(PaintingCanvas canvas) {
     applyTransformForPivot(canvas);

examples/game/lib/repeated_image.dart

@@ -4,7 +4,7 @@ class RepeatedImage extends Node {
   Sprite _sprt0;
   Sprite _sprt1;
 
-  RepeatedImage(sky.Image image, [sky.TransferMode mode = null]) {
+  RepeatedImage(ui.Image image, [ui.TransferMode mode = null]) {
     _sprt0 = new Sprite.fromImage(image);
     _sprt0.size = new Size(1024.0, 1024.0);
     _sprt0.pivot = Point.origin;

examples/game/lib/star_field.dart

 part of game;
 
 class StarField extends NodeWithSize {
-  sky.Image _image;
+  ui.Image _image;
   SpriteSheet _spriteSheet;
   int _numStars;
   bool _autoScroll;
@@ -15,9 +15,9 @@ class StarField extends NodeWithSize {
   Size _paddedSize = Size.zero;
 
   Paint _paint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false
-    ..transferMode = sky.TransferMode.plus;
+    ..transferMode = ui.TransferMode.plus;
 
   StarField(this._spriteSheet, this._numStars, [this._autoScroll = false]) : super(Size.zero) {
     _image = _spriteSheet.image;
@@ -48,9 +48,9 @@ class StarField extends NodeWithSize {
 
   void paint(PaintingCanvas canvas) {
     // Create a transform for each star
-    List<sky.RSTransform> transforms = [];
+    List<ui.RSTransform> transforms = [];
     for (int i = 0; i < _numStars; i++) {
-      sky.RSTransform transform = new sky.RSTransform(
+      ui.RSTransform transform = new ui.RSTransform(
         _starScales[i],
         0.0,
         _starPositions[i].x - _padding,
@@ -60,7 +60,7 @@ class StarField extends NodeWithSize {
     }
 
     // Draw the stars
-    canvas.drawAtlas(_image, transforms, _rects, _colors, sky.TransferMode.modulate, null, _paint);
+    canvas.drawAtlas(_image, transforms, _rects, _colors, ui.TransferMode.modulate, null, _paint);
   }
 
   void move(double dx, double dy) {

examples/game/test_performance.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
@@ -202,7 +202,7 @@ class TestPerformanceAtlas extends PerformanceTest {
   double rotation = 0.0;
   List<Rect> rects = [];
   Paint cachedPaint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
   TestPerformanceAtlas() {
@@ -216,7 +216,7 @@ class TestPerformanceAtlas extends PerformanceTest {
 
   void paint(PaintingCanvas canvas) {
     // Setup transforms
-    List<sky.RSTransform> transforms = [];
+    List<ui.RSTransform> transforms = [];
 
     for (int x = 0; x < grid; x++) {
       for (int y = 0; y < grid; y++) {
@@ -238,12 +238,12 @@ class TestPerformanceAtlas extends PerformanceTest {
     rotation += 1.0;
   }
 
-  sky.RSTransform createTransform(double x, double y, double ax, double ay, double rot, double scale) {
+  ui.RSTransform createTransform(double x, double y, double ax, double ay, double rot, double scale) {
     double scos = math.cos(convertDegrees2Radians(rot)) * scale;
     double ssin = math.sin(convertDegrees2Radians(rot)) * scale;
     double tx = x + -scos * ax + ssin * ay;
     double ty = y + -ssin * ax - scos * ay;
-    return new sky.RSTransform(scos, ssin, tx, ty);
+    return new ui.RSTransform(scos, ssin, tx, ty);
   }
 }
 
@@ -255,7 +255,7 @@ class TestPerformanceAtlas2 extends PerformanceTest {
   double rotation = 0.0;
   List<Rect> rects = [];
   Paint cachedPaint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
   TestPerformanceAtlas2() {
@@ -269,7 +269,7 @@ class TestPerformanceAtlas2 extends PerformanceTest {
 
   void paint(PaintingCanvas canvas) {
     // Setup transforms
-    List<sky.RSTransform> transforms = [];
+    List<ui.RSTransform> transforms = [];
 
     for (int x = 12; x < grid - 12; x++) {
       for (int y = 0; y < grid; y++) {
@@ -291,11 +291,11 @@ class TestPerformanceAtlas2 extends PerformanceTest {
     rotation += 1.0;
   }
 
-  sky.RSTransform createTransform(double x, double y, double ax, double ay, double rot, double scale) {
+  ui.RSTransform createTransform(double x, double y, double ax, double ay, double rot, double scale) {
     double scos = math.cos(convertDegrees2Radians(rot)) * scale;
     double ssin = math.sin(convertDegrees2Radians(rot)) * scale;
     double tx = x + -scos * ax + ssin * ay;
     double ty = y + -ssin * ax - scos * ay;
-    return new sky.RSTransform(scos, ssin, tx, ty);
+    return new ui.RSTransform(scos, ssin, tx, ty);
   }
 }

examples/mine_digger/lib/main.dart

 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:math';
 
 import 'package:flutter/material.dart';
@@ -85,7 +85,7 @@ class MineDiggerState extends State<MineDigger> {
   }
 
   PointerEventListener _pointerDownHandlerFor(int posX, int posY) {
-    return (sky.PointerEvent event) {
+    return (ui.PointerEvent event) {
       if (event.buttons == 1) {
         probe(posX, posY);
       } else if (event.buttons == 2) {
@@ -190,7 +190,7 @@ class MineDiggerState extends State<MineDigger> {
     );
   }
 
-  void handleToolbarPointerDown(sky.PointerEvent event) {
+  void handleToolbarPointerDown(ui.PointerEvent event) {
     setState(() {
       resetGame();
     });

examples/raw/baseline.dart

@@ -2,20 +2,20 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
-void drawText(sky.Canvas canvas, String lh) {
-  sky.Paint paint = new sky.Paint();
+void drawText(ui.Canvas canvas, String lh) {
+  ui.Paint paint = new ui.Paint();
 
   // offset down
   canvas.translate(0.0, 100.0);
 
   // set up the text
-  sky.Document document = new sky.Document();
-  sky.Text arabic = document.createText("مرحبا");
-  sky.Text english = document.createText(" Hello");
-  sky.Element block = document.createElement('div');
+  ui.Document document = new ui.Document();
+  ui.Text arabic = document.createText("مرحبا");
+  ui.Text english = document.createText(" Hello");
+  ui.Element block = document.createElement('div');
   block.style['display'] = 'paragraph';
   block.style['font-family'] = 'monospace';
   block.style['font-size'] = '50px';
@@ -23,21 +23,21 @@ void drawText(sky.Canvas canvas, String lh) {
   block.style['color'] = '#0000A0';
   block.appendChild(arabic);
   block.appendChild(english);
-  sky.LayoutRoot layoutRoot = new sky.LayoutRoot();
+  ui.LayoutRoot layoutRoot = new ui.LayoutRoot();
   layoutRoot.rootElement = block;
-  layoutRoot.maxWidth = sky.view.width - 20.0; // you need to set a width for this to paint
+  layoutRoot.maxWidth = ui.view.width - 20.0; // you need to set a width for this to paint
   layoutRoot.layout();
 
   // draw a line at the text's baseline
-  sky.Path path = new sky.Path();
+  ui.Path path = new ui.Path();
   path.moveTo(0.0, 0.0);
   path.lineTo(block.maxContentWidth, 0.0);
   path.moveTo(0.0, block.alphabeticBaseline);
   path.lineTo(block.maxContentWidth, block.alphabeticBaseline);
   path.moveTo(0.0, block.height);
   path.lineTo(block.maxContentWidth, block.height);
-  paint.color = const sky.Color(0xFFFF9000);
-  paint.setStyle(sky.PaintingStyle.stroke);
+  paint.color = const ui.Color(0xFFFF9000);
+  paint.setStyle(ui.PaintingStyle.stroke);
   paint.strokeWidth = 3.0;
   canvas.drawPath(path, paint);
 
@@ -45,14 +45,14 @@ void drawText(sky.Canvas canvas, String lh) {
   layoutRoot.paint(canvas);
 }
 
-sky.Picture paint(sky.Rect paintBounds) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+ui.Picture paint(ui.Rect paintBounds) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
 
-  sky.Paint paint = new sky.Paint();
-  paint.color = const sky.Color(0xFFFFFFFF);
-  paint.setStyle(sky.PaintingStyle.fill);
-  canvas.drawRect(new sky.Rect.fromLTRB(0.0, 0.0, sky.view.width, sky.view.height), paint);
+  ui.Paint paint = new ui.Paint();
+  paint.color = const ui.Color(0xFFFFFFFF);
+  paint.setStyle(ui.PaintingStyle.fill);
+  canvas.drawRect(new ui.Rect.fromLTRB(0.0, 0.0, ui.view.width, ui.view.height), paint);
 
   canvas.translate(10.0, 0.0);
   drawText(canvas, '1.0');
@@ -61,29 +61,29 @@ sky.Picture paint(sky.Rect paintBounds) {
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
 
 void beginFrame(double timeStamp) {
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
 }
 
 void main() {
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/raw/hello_world.dart

@@ -2,56 +2,56 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
-sky.Color color;
+ui.Color color;
 
-sky.Picture paint(sky.Rect paintBounds) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
-  sky.Size size = paintBounds.size;
+ui.Picture paint(ui.Rect paintBounds) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
+  ui.Size size = paintBounds.size;
 
   double radius = size.shortestSide * 0.45;
-  sky.Paint paint = new sky.Paint()
+  ui.Paint paint = new ui.Paint()
     ..color = color;
-  canvas.drawCircle(size.center(sky.Point.origin), radius, paint);
+  canvas.drawCircle(size.center(ui.Point.origin), radius, paint);
 
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
 
 void beginFrame(double timeStamp) {
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
 }
 
-bool handleEvent(sky.Event event) {
+bool handleEvent(ui.Event event) {
   if (event.type == 'pointerdown') {
-    color = new sky.Color.fromARGB(255, 0, 0, 255);
-    sky.view.scheduleFrame();
+    color = new ui.Color.fromARGB(255, 0, 0, 255);
+    ui.view.scheduleFrame();
     return true;
   }
 
   if (event.type == 'pointerup') {
-    color = new sky.Color.fromARGB(255, 0, 255, 0);
-    sky.view.scheduleFrame();
+    color = new ui.Color.fromARGB(255, 0, 255, 0);
+    ui.view.scheduleFrame();
     return true;
   }
 
@@ -65,8 +65,8 @@ bool handleEvent(sky.Event event) {
 
 void main() {
   print('Hello, world');
-  color = new sky.Color.fromARGB(255, 0, 255, 0);
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.setEventCallback(handleEvent);
-  sky.view.scheduleFrame();
+  color = new ui.Color.fromARGB(255, 0, 255, 0);
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.setEventCallback(handleEvent);
+  ui.view.scheduleFrame();
 }

examples/raw/mutating-dom.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
 const kMaxIterations = 100;
@@ -14,9 +14,9 @@ void report(String s) {
   // print("$s\n");
 }
 
-sky.LayoutRoot layoutRoot = new sky.LayoutRoot();
-sky.Document document = new sky.Document();
-sky.Element root;
+ui.LayoutRoot layoutRoot = new ui.LayoutRoot();
+ui.Document document = new ui.Document();
+ui.Element root;
 math.Random random = new math.Random();
 
 bool pickThis(double odds) {
@@ -29,19 +29,19 @@ String generateCharacter(int min, int max) {
   return result;
 }
 
-String colorToCSSString(sky.Color color) {
+String colorToCSSString(ui.Color color) {
   return 'rgba(${color.red}, ${color.green}, ${color.blue}, ${color.alpha / 255.0})';
 }
 
-void mutate(sky.Canvas canvas) {
+void mutate(ui.Canvas canvas) {
   // mutate the DOM randomly
   int iterationsLeft = kMaxIterations;
-  sky.Node node = root;
-  sky.Node other = null;
+  ui.Node node = root;
+  ui.Node other = null;
   while (node != null && iterationsLeft > 0) {
     iterationsLeft -= 1;
-    if (node is sky.Element && pickThis(0.4)) {
-      node = (node as sky.Element).firstChild;
+    if (node is ui.Element && pickThis(0.4)) {
+      node = (node as ui.Element).firstChild;
     } else if (node.nextSibling != null && pickThis(0.5)) {
       node = node.nextSibling;
     } else if (other == null && node != root && pickThis(0.1)) {
@@ -57,7 +57,7 @@ void mutate(sky.Canvas canvas) {
     } else if (node != root && pickThis(0.001)) {
       report("remove()");
       node.remove();
-    } else if (node is sky.Element) {
+    } else if (node is ui.Element) {
       if (pickThis(0.1)) {
         report("appending a new text node (ASCII)");
         node.appendChild(document.createText(generateCharacter(0x20, 0x7F)));
@@ -80,7 +80,7 @@ void mutate(sky.Canvas canvas) {
         break;
       } else if (pickThis(0.1)) {
         report("styling: color");
-        node.style['color'] = colorToCSSString(new sky.Color(random.nextInt(0xFFFFFFFF) | 0xC0808080));
+        node.style['color'] = colorToCSSString(new ui.Color(random.nextInt(0xFFFFFFFF) | 0xC0808080));
         break;
       } else if (pickThis(0.1)) {
         report("styling: font-size");
@@ -148,12 +148,12 @@ void mutate(sky.Canvas canvas) {
         break;
       } else if (pickThis(0.1)) {
         report("styling: text-decoration-color");
-        node.style['text-decoration-color'] = colorToCSSString(new sky.Color(random.nextInt(0xFFFFFFFF)));
+        node.style['text-decoration-color'] = colorToCSSString(new ui.Color(random.nextInt(0xFFFFFFFF)));
         break;
       }
     } else {
-      assert(node is sky.Text);
-      final sky.Text text = node;
+      assert(node is ui.Text);
+      final ui.Text text = node;
       if (pickThis(0.1)) {
         report("appending a new text node (ASCII)");
         text.appendData(generateCharacter(0x20, 0x7F));
@@ -182,8 +182,8 @@ void mutate(sky.Canvas canvas) {
   node = root;
   int count = 1;
   while (node != null) {
-    if (node is sky.Element && node.firstChild != null) {
-      node = (node as sky.Element).firstChild;
+    if (node is ui.Element && node.firstChild != null) {
+      node = (node as ui.Element).firstChild;
       count += 1;
     } else {
       while (node != null && node.nextSibling == null)
@@ -202,40 +202,40 @@ void mutate(sky.Canvas canvas) {
 
   // draw the result
   report("recording...");
-  layoutRoot.maxWidth = sky.view.width;
+  layoutRoot.maxWidth = ui.view.width;
   layoutRoot.layout();
   layoutRoot.paint(canvas);
   report("painting...");
 }
 
-sky.Picture paint(sky.Rect paintBounds) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+ui.Picture paint(ui.Rect paintBounds) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
   mutate(canvas);
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
 
 void beginFrame(double timeStamp) {
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
-  sky.view.scheduleFrame();
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
+  ui.view.scheduleFrame();
 }
 
 void main() {
@@ -243,6 +243,6 @@ void main() {
   root.style['display'] = 'paragraph';
   root.style['color'] = '#FFFFFF';
   layoutRoot.rootElement = root;
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/raw/painting.dart

@@ -2,34 +2,34 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:math' as math;
 import 'dart:typed_data';
 
-sky.Picture paint(sky.Rect paintBounds) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
-  sky.Size size = paintBounds.size;
+ui.Picture paint(ui.Rect paintBounds) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
+  ui.Size size = paintBounds.size;
 
-  sky.Paint paint = new sky.Paint();
-  sky.Point mid = size.center(sky.Point.origin);
+  ui.Paint paint = new ui.Paint();
+  ui.Point mid = size.center(ui.Point.origin);
   double radius = size.shortestSide / 2.0;
-  canvas.drawPaint(new sky.Paint()..color = const sky.Color(0xFFFFFFFF));
+  canvas.drawPaint(new ui.Paint()..color = const ui.Color(0xFFFFFFFF));
 
   canvas.save();
-  canvas.translate(-mid.x/2.0, sky.view.height*2.0);
+  canvas.translate(-mid.x/2.0, ui.view.height*2.0);
   canvas.clipRect(
-      new sky.Rect.fromLTRB(0.0, -sky.view.height, sky.view.width, radius));
+      new ui.Rect.fromLTRB(0.0, -ui.view.height, ui.view.width, radius));
 
   canvas.translate(mid.x, mid.y);
-  paint.color = const sky.Color.fromARGB(128, 255, 0, 255);
+  paint.color = const ui.Color.fromARGB(128, 255, 0, 255);
   canvas.rotate(math.PI/4.0);
 
-  sky.Gradient yellowBlue = new sky.Gradient.linear(
-      [new sky.Point(-radius, -radius), new sky.Point(0.0, 0.0)],
-      [const sky.Color(0xFFFFFF00), const sky.Color(0xFF0000FF)]);
-  canvas.drawRect(new sky.Rect.fromLTRB(-radius, -radius, radius, radius),
-                   new sky.Paint()..setShader(yellowBlue));
+  ui.Gradient yellowBlue = new ui.Gradient.linear(
+      [new ui.Point(-radius, -radius), new ui.Point(0.0, 0.0)],
+      [const ui.Color(0xFFFFFF00), const ui.Color(0xFF0000FF)]);
+  canvas.drawRect(new ui.Rect.fromLTRB(-radius, -radius, radius, radius),
+                   new ui.Paint()..setShader(yellowBlue));
 
   // Scale x and y by 0.5.
   var scaleMatrix = new Float64List.fromList([
@@ -39,70 +39,70 @@ sky.Picture paint(sky.Rect paintBounds) {
       0.0, 0.0, 0.0, 1.0,
   ]);
   canvas.concat(scaleMatrix);
-  paint.color = const sky.Color.fromARGB(128, 0, 255, 0);
-  canvas.drawCircle(sky.Point.origin, radius, paint);
+  paint.color = const ui.Color.fromARGB(128, 0, 255, 0);
+  canvas.drawCircle(ui.Point.origin, radius, paint);
 
   canvas.restore();
 
   canvas.translate(0.0, 50.0);
-  var builder = new sky.LayerDrawLooperBuilder()
+  var builder = new ui.LayerDrawLooperBuilder()
       ..addLayerOnTop(
-          new sky.DrawLooperLayerInfo()
-            ..setOffset(const sky.Offset(150.0, 0.0))
-            ..setColorMode(sky.TransferMode.src)
-            ..setPaintBits(sky.PaintBits.all),
-          new sky.Paint()
-            ..color = const sky.Color.fromARGB(128, 255, 255, 0)
-            ..colorFilter = new sky.ColorFilter.mode(
-              const sky.Color.fromARGB(128, 0, 0, 255), sky.TransferMode.srcIn)
-            ..maskFilter = new sky.MaskFilter.blur(
-              sky.BlurStyle.normal, 3.0, highQuality: true))
+          new ui.DrawLooperLayerInfo()
+            ..setOffset(const ui.Offset(150.0, 0.0))
+            ..setColorMode(ui.TransferMode.src)
+            ..setPaintBits(ui.PaintBits.all),
+          new ui.Paint()
+            ..color = const ui.Color.fromARGB(128, 255, 255, 0)
+            ..colorFilter = new ui.ColorFilter.mode(
+              const ui.Color.fromARGB(128, 0, 0, 255), ui.TransferMode.srcIn)
+            ..maskFilter = new ui.MaskFilter.blur(
+              ui.BlurStyle.normal, 3.0, highQuality: true))
       ..addLayerOnTop(
-          new sky.DrawLooperLayerInfo()
-            ..setOffset(const sky.Offset(75.0, 75.0))
-            ..setColorMode(sky.TransferMode.src)
-            ..setPaintBits(sky.PaintBits.shader),
-          new sky.Paint()
-            ..shader = new sky.Gradient.radial(
-                new sky.Point(0.0, 0.0), radius/3.0,
-                [const sky.Color(0xFFFFFF00), const sky.Color(0xFFFF0000)],
-                null, sky.TileMode.mirror)
-            // Since we're don't set sky.PaintBits.maskFilter, this has no effect.
-            ..maskFilter = new sky.MaskFilter.blur(
-                sky.BlurStyle.normal, 50.0, highQuality: true))
+          new ui.DrawLooperLayerInfo()
+            ..setOffset(const ui.Offset(75.0, 75.0))
+            ..setColorMode(ui.TransferMode.src)
+            ..setPaintBits(ui.PaintBits.shader),
+          new ui.Paint()
+            ..shader = new ui.Gradient.radial(
+                new ui.Point(0.0, 0.0), radius/3.0,
+                [const ui.Color(0xFFFFFF00), const ui.Color(0xFFFF0000)],
+                null, ui.TileMode.mirror)
+            // Since we're don't set ui.PaintBits.maskFilter, this has no effect.
+            ..maskFilter = new ui.MaskFilter.blur(
+                ui.BlurStyle.normal, 50.0, highQuality: true))
       ..addLayerOnTop(
-          new sky.DrawLooperLayerInfo()..setOffset(const sky.Offset(225.0, 75.0)),
+          new ui.DrawLooperLayerInfo()..setOffset(const ui.Offset(225.0, 75.0)),
           // Since this layer uses a DST color mode, this has no effect.
-          new sky.Paint()..color = const sky.Color.fromARGB(128, 255, 0, 0));
+          new ui.Paint()..color = const ui.Color.fromARGB(128, 255, 0, 0));
   paint.drawLooper = builder.build();
-  canvas.drawCircle(sky.Point.origin, radius, paint);
+  canvas.drawCircle(ui.Point.origin, radius, paint);
 
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float32List deviceTransform = new Float32List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
 
 void beginFrame(double timeStamp) {
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
 }
 
 void main() {
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/raw/shadow.dart

@@ -2,63 +2,63 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
-sky.Picture paint(sky.Rect paintBounds) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+ui.Picture paint(ui.Rect paintBounds) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
 
   double size = 100.0;
   canvas.translate(size + 10.0, size + 10.0);
 
-  sky.Paint paint = new sky.Paint();
-  paint.color = const sky.Color.fromARGB(255, 0, 255, 0);
-  var builder = new sky.LayerDrawLooperBuilder()
+  ui.Paint paint = new ui.Paint();
+  paint.color = const ui.Color.fromARGB(255, 0, 255, 0);
+  var builder = new ui.LayerDrawLooperBuilder()
     // Shadow layer.
     ..addLayerOnTop(
-        new sky.DrawLooperLayerInfo()
-          ..setPaintBits(sky.PaintBits.all)
-          ..setOffset(const sky.Offset(5.0, 5.0))
-          ..setColorMode(sky.TransferMode.src),
-        new sky.Paint()
-          ..color = const sky.Color.fromARGB(128, 55, 55, 55)
-          ..maskFilter = new sky.MaskFilter.blur(sky.BlurStyle.normal, 5.0)
+        new ui.DrawLooperLayerInfo()
+          ..setPaintBits(ui.PaintBits.all)
+          ..setOffset(const ui.Offset(5.0, 5.0))
+          ..setColorMode(ui.TransferMode.src),
+        new ui.Paint()
+          ..color = const ui.Color.fromARGB(128, 55, 55, 55)
+          ..maskFilter = new ui.MaskFilter.blur(ui.BlurStyle.normal, 5.0)
     )
     // Main layer.
-    ..addLayerOnTop(new sky.DrawLooperLayerInfo(), new sky.Paint());
+    ..addLayerOnTop(new ui.DrawLooperLayerInfo(), new ui.Paint());
   paint.drawLooper = builder.build();
 
   canvas.drawPaint(
-      new sky.Paint()..color = const sky.Color.fromARGB(255, 255, 255, 255));
-  canvas.drawRect(new sky.Rect.fromLTRB(-size, -size, size, size), paint);
+      new ui.Paint()..color = const ui.Color.fromARGB(255, 255, 255, 255));
+  canvas.drawRect(new ui.Rect.fromLTRB(-size, -size, size, size), paint);
 
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
 
 void beginFrame(double timeStamp) {
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
 }
 
 void main() {
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/raw/spinning_arabic.dart

@@ -3,20 +3,20 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
 double timeBase = null;
-sky.LayoutRoot layoutRoot = new sky.LayoutRoot();
+ui.LayoutRoot layoutRoot = new ui.LayoutRoot();
 
-sky.Picture paint(sky.Rect paintBounds, double delta) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+ui.Picture paint(ui.Rect paintBounds, double delta) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
 
-  canvas.translate(sky.view.width / 2.0, sky.view.height / 2.0);
+  canvas.translate(ui.view.width / 2.0, ui.view.height / 2.0);
   canvas.rotate(math.PI * delta / 1800);
-  canvas.drawRect(new sky.Rect.fromLTRB(-100.0, -100.0, 100.0, 100.0),
-                  new sky.Paint()..color = const sky.Color.fromARGB(255, 0, 255, 0));
+  canvas.drawRect(new ui.Rect.fromLTRB(-100.0, -100.0, 100.0, 100.0),
+                  new ui.Paint()..color = const ui.Color.fromARGB(255, 0, 255, 0));
 
   double sin = math.sin(delta / 200);
   layoutRoot.maxWidth = 150.0 + (50 * sin);
@@ -28,17 +28,17 @@ sky.Picture paint(sky.Rect paintBounds, double delta) {
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
@@ -47,15 +47,15 @@ void beginFrame(double timeStamp) {
   if (timeBase == null)
     timeBase = timeStamp;
   double delta = timeStamp - timeBase;
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds, delta);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
-  sky.view.scheduleFrame();
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds, delta);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
+  ui.view.scheduleFrame();
 }
 
 void main() {
-  var document = new sky.Document();
+  var document = new ui.Document();
   var arabic = document.createText("هذا هو قليلا طويلة من النص الذي يجب التفاف .");
   var more = document.createText(" و أكثر قليلا لجعله أطول. ");
   var block = document.createElement('p');
@@ -68,6 +68,6 @@ void main() {
 
   layoutRoot.rootElement = block;
 
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/raw/spinning_image.dart

@@ -3,29 +3,29 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
 import 'package:flutter/services.dart';
 
 double timeBase = null;
 
-sky.Image image = null;
+ui.Image image = null;
 String url1 = "https://raw.githubusercontent.com/dart-lang/logos/master/logos_and_wordmarks/dart-logo.png";
 String url2 = "http://i2.kym-cdn.com/photos/images/facebook/000/581/296/c09.jpg";
 
-sky.Picture paint(sky.Rect paintBounds, double delta) {
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+ui.Picture paint(ui.Rect paintBounds, double delta) {
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
 
   canvas.translate(paintBounds.width / 2.0, paintBounds.height / 2.0);
   canvas.rotate(math.PI * delta / 1800);
   canvas.scale(0.2, 0.2);
-  sky.Paint paint = new sky.Paint()..color = const sky.Color.fromARGB(255, 0, 255, 0);
+  ui.Paint paint = new ui.Paint()..color = const ui.Color.fromARGB(255, 0, 255, 0);
 
   // Draw image
   if (image != null)
-    canvas.drawImage(image, new sky.Point(-image.width / 2.0, -image.height / 2.0), paint);
+    canvas.drawImage(image, new ui.Point(-image.width / 2.0, -image.height / 2.0), paint);
 
   // Draw cut out of image
   canvas.rotate(math.PI * delta / 1800);
@@ -33,25 +33,25 @@ sky.Picture paint(sky.Rect paintBounds, double delta) {
     var w = image.width.toDouble();
     var h = image.width.toDouble();
     canvas.drawImageRect(image,
-      new sky.Rect.fromLTRB(w * 0.25, h * 0.25, w * 0.75, h * 0.75),
-      new sky.Rect.fromLTRB(-w / 4.0, -h / 4.0, w / 4.0, h / 4.0),
+      new ui.Rect.fromLTRB(w * 0.25, h * 0.25, w * 0.75, h * 0.75),
+      new ui.Rect.fromLTRB(-w / 4.0, -h / 4.0, w / 4.0, h / 4.0),
       paint);
   }
 
   return recorder.endRecording();
 }
 
-sky.Scene composite(sky.Picture picture, sky.Rect paintBounds) {
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+ui.Scene composite(ui.Picture picture, ui.Rect paintBounds) {
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
   return sceneBuilder.build();
 }
@@ -60,11 +60,11 @@ void beginFrame(double timeStamp) {
   if (timeBase == null)
     timeBase = timeStamp;
   double delta = timeStamp - timeBase;
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.Picture picture = paint(paintBounds, delta);
-  sky.Scene scene = composite(picture, paintBounds);
-  sky.view.scene = scene;
-  sky.view.scheduleFrame();
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.Picture picture = paint(paintBounds, delta);
+  ui.Scene scene = composite(picture, paintBounds);
+  ui.view.scene = scene;
+  ui.view.scheduleFrame();
 }
 
 
@@ -72,13 +72,13 @@ void handleImageLoad(result) {
   if (result != image) {
     print("${result.width}x${result.width} image loaded!");
     image = result;
-    sky.view.scheduleFrame();
+    ui.view.scheduleFrame();
   } else {
     print("Existing image was loaded again");
   }
 }
 
-bool handleEvent(sky.Event event) {
+bool handleEvent(ui.Event event) {
   if (event.type == "pointerdown") {
     return true;
   }
@@ -93,6 +93,6 @@ bool handleEvent(sky.Event event) {
 
 void main() {
   imageCache.load(url1).first.then(handleImageLoad);
-  sky.view.setEventCallback(handleEvent);
-  sky.view.setFrameCallback(beginFrame);
+  ui.view.setEventCallback(handleEvent);
+  ui.view.setFrameCallback(beginFrame);
 }

examples/raw/spinning_square.dart

@@ -3,46 +3,46 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:typed_data';
 
 double timeBase = null;
 
 void beginFrame(double timeStamp) {
-  sky.tracing.begin('beginFrame');
+  ui.tracing.begin('beginFrame');
   if (timeBase == null)
     timeBase = timeStamp;
   double delta = timeStamp - timeBase;
 
   // paint
-  sky.Rect paintBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width, sky.view.height);
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, paintBounds);
+  ui.Rect paintBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width, ui.view.height);
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, paintBounds);
   canvas.translate(paintBounds.width / 2.0, paintBounds.height / 2.0);
   canvas.rotate(math.PI * delta / 1800);
-  canvas.drawRect(new sky.Rect.fromLTRB(-100.0, -100.0, 100.0, 100.0),
-                  new sky.Paint()..color = const sky.Color.fromARGB(255, 0, 255, 0));
-  sky.Picture picture = recorder.endRecording();
+  canvas.drawRect(new ui.Rect.fromLTRB(-100.0, -100.0, 100.0, 100.0),
+                  new ui.Paint()..color = const ui.Color.fromARGB(255, 0, 255, 0));
+  ui.Picture picture = recorder.endRecording();
 
   // composite
-  final double devicePixelRatio = sky.view.devicePixelRatio;
-  sky.Rect sceneBounds = new sky.Rect.fromLTWH(0.0, 0.0, sky.view.width * devicePixelRatio, sky.view.height * devicePixelRatio);
+  final double devicePixelRatio = ui.view.devicePixelRatio;
+  ui.Rect sceneBounds = new ui.Rect.fromLTWH(0.0, 0.0, ui.view.width * devicePixelRatio, ui.view.height * devicePixelRatio);
   Float64List deviceTransform = new Float64List(16)
     ..[0] = devicePixelRatio
     ..[5] = devicePixelRatio
     ..[10] = 1.0
     ..[15] = 1.0;
-  sky.SceneBuilder sceneBuilder = new sky.SceneBuilder(sceneBounds)
+  ui.SceneBuilder sceneBuilder = new ui.SceneBuilder(sceneBounds)
     ..pushTransform(deviceTransform)
-    ..addPicture(sky.Offset.zero, picture, paintBounds)
+    ..addPicture(ui.Offset.zero, picture, paintBounds)
     ..pop();
-  sky.view.scene = sceneBuilder.build();
+  ui.view.scene = sceneBuilder.build();
 
-  sky.tracing.end('beginFrame');
-  sky.view.scheduleFrame();
+  ui.tracing.end('beginFrame');
+  ui.view.scheduleFrame();
 }
 
 void main() {
-  sky.view.setFrameCallback(beginFrame);
-  sky.view.scheduleFrame();
+  ui.view.setFrameCallback(beginFrame);
+  ui.view.scheduleFrame();
 }

examples/rendering/baseline.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 
@@ -50,7 +50,7 @@ RenderBox getBox(double lh) {
               path.lineTo(w, h);
               Paint paint = new Paint();
               paint.color = const Color(0xFFFF9000);
-              paint.setStyle(sky.PaintingStyle.stroke);
+              paint.setStyle(ui.PaintingStyle.stroke);
               paint.strokeWidth = 3.0;
               canvas.drawPath(path, paint);
             }

examples/rendering/borders.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 
@@ -15,7 +15,7 @@ void main() {
           additionalConstraints: new BoxConstraints.tightFor(height: 100.0),
           child: new RenderDecoratedBox(
             decoration: new BoxDecoration(
-              backgroundColor: new sky.Color(0xFFFFFF00)
+              backgroundColor: new ui.Color(0xFFFFFF00)
             )
           )
         )
@@ -27,12 +27,12 @@ void main() {
           child: new RenderDecoratedBox(
             decoration: new BoxDecoration(
               border: new Border(
-                top: new BorderSide(color: new sky.Color(0xFFF00000), width: 5.0),
-                right: new BorderSide(color: new sky.Color(0xFFFF9000), width: 10.0),
-                bottom: new BorderSide(color: new sky.Color(0xFFFFF000), width: 15.0),
-                left: new BorderSide(color: new sky.Color(0xFF00FF00), width: 20.0)
+                top: new BorderSide(color: new ui.Color(0xFFF00000), width: 5.0),
+                right: new BorderSide(color: new ui.Color(0xFFFF9000), width: 10.0),
+                bottom: new BorderSide(color: new ui.Color(0xFFFFF000), width: 15.0),
+                left: new BorderSide(color: new ui.Color(0xFF00FF00), width: 20.0)
               ),
-              backgroundColor: new sky.Color(0xFFDDDDDD)
+              backgroundColor: new ui.Color(0xFFDDDDDD)
             )
           )
         )
@@ -43,7 +43,7 @@ void main() {
           additionalConstraints: new BoxConstraints.tightFor(height: 100.0),
           child: new RenderDecoratedBox(
             decoration: new BoxDecoration(
-              backgroundColor: new sky.Color(0xFFFFFF00)
+              backgroundColor: new ui.Color(0xFFFFFF00)
             )
           )
         )
@@ -54,7 +54,7 @@ void main() {
           additionalConstraints: new BoxConstraints.tightFor(height: 100.0),
           child: new RenderDecoratedBox(
             decoration: new BoxDecoration(
-              backgroundColor: new sky.Color(0xFFFFFF00)
+              backgroundColor: new ui.Color(0xFFFFFF00)
             )
           )
         )
@@ -65,7 +65,7 @@ void main() {
           additionalConstraints: new BoxConstraints.tightFor(height: 100.0),
           child: new RenderDecoratedBox(
             decoration: new BoxDecoration(
-              backgroundColor: new sky.Color(0xFFFFFF00)
+              backgroundColor: new ui.Color(0xFFFFFF00)
             )
           )
         )

examples/rendering/flex.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'solid_color_box.dart';
@@ -11,24 +11,24 @@ RenderBox buildFlexExample() {
   RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
 
   RenderDecoratedBox root = new RenderDecoratedBox(
-    decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF000000)),
+    decoration: new BoxDecoration(backgroundColor: const ui.Color(0xFF000000)),
     child: flexRoot
   );
 
-  void addFlexChildSolidColor(RenderFlex parent, sky.Color backgroundColor, { int flex: 0 }) {
+  void addFlexChildSolidColor(RenderFlex parent, ui.Color backgroundColor, { int flex: 0 }) {
     RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);
     parent.add(child);
     child.parentData.flex = flex;
   }
 
   // Yellow bar at top
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFFFF00), flex: 1);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFFFFFF00), flex: 1);
 
   // Turquoise box
-  flexRoot.add(new RenderSolidColorBox(const sky.Color(0x7700FFFF), desiredSize: new sky.Size(100.0, 100.0)));
+  flexRoot.add(new RenderSolidColorBox(const ui.Color(0x7700FFFF), desiredSize: new ui.Size(100.0, 100.0)));
 
   var renderDecoratedBlock = new RenderDecoratedBox(
-    decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFFFFFFFF))
+    decoration: new BoxDecoration(backgroundColor: const ui.Color(0xFFFFFFFF))
   );
 
   flexRoot.add(new RenderPadding(padding: const EdgeDims.all(10.0), child: renderDecoratedBlock));
@@ -36,11 +36,11 @@ RenderBox buildFlexExample() {
   var row = new RenderFlex(direction: FlexDirection.horizontal);
 
   // Purple and blue cells
-  addFlexChildSolidColor(row, const sky.Color(0x77FF00FF), flex: 1);
-  addFlexChildSolidColor(row, const sky.Color(0xFF0000FF), flex: 2);
+  addFlexChildSolidColor(row, const ui.Color(0x77FF00FF), flex: 1);
+  addFlexChildSolidColor(row, const ui.Color(0xFF0000FF), flex: 2);
 
   var decoratedRow = new RenderDecoratedBox(
-    decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF333333)),
+    decoration: new BoxDecoration(backgroundColor: const ui.Color(0xFF333333)),
     child: row
   );
 

examples/rendering/interactive_flex.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:math' as math;
 
 import 'package:flutter/services.dart';
@@ -19,7 +19,7 @@ class Touch {
 class RenderImageGrow extends RenderImage {
   final Size _startingSize;
 
-  RenderImageGrow(sky.Image image, Size size)
+  RenderImageGrow(ui.Image image, Size size)
     : _startingSize = size, super(image: image, width: size.width, height: size.height);
 
   double _growth = 0.0;
@@ -35,7 +35,7 @@ RenderImageGrow image;
 
 Map<int, Touch> touches = new Map();
 void handleEvent(event) {
-  if (event is sky.PointerEvent) {
+  if (event is ui.PointerEvent) {
     if (event.type == 'pointermove')
       image.growth = math.max(0.0, image.growth + event.x - touches[event.pointer].x);
     touches[event.pointer] = new Touch(event.x, event.y);
@@ -59,7 +59,7 @@ void main() {
 
   // Resizeable image
   image = new RenderImageGrow(null, new Size(100.0, null));
-  imageCache.load("https://www.dartlang.org/logos/dart-logo.png").first.then((sky.Image dartLogo) {
+  imageCache.load("https://www.dartlang.org/logos/dart-logo.png").first.then((ui.Image dartLogo) {
     image.image = dartLogo;
   });
 
@@ -99,5 +99,5 @@ Pancetta meatball tongue tenderloin rump tail jowl boudin.""";
 
   updateTaskDescription('Interactive Flex', topColor);
   new FlutterBinding(root: root);
-  sky.view.setEventCallback(handleEvent);
+  ui.view.setEventCallback(handleEvent);
 }

examples/rendering/sector_layout.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 
@@ -528,7 +528,7 @@ class RenderSolidColor extends RenderDecoratedSector {
     deltaTheta = constraints.constrainDeltaTheta(desiredDeltaTheta);
   }
 
-  void handleEvent(sky.Event event, HitTestEntry entry) {
+  void handleEvent(ui.Event event, HitTestEntry entry) {
     if (event.type == 'pointerdown')
       decoration = new BoxDecoration(backgroundColor: const Color(0xFFFF0000));
     else if (event.type == 'pointerup')

examples/rendering/solid_color_box.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 
@@ -42,7 +42,7 @@ class RenderSolidColorBox extends RenderDecoratedBox {
     size = constraints.constrain(desiredSize);
   }
 
-  void handleEvent(sky.Event event, BoxHitTestEntry entry) {
+  void handleEvent(ui.Event event, BoxHitTestEntry entry) {
     if (event.type == 'pointerdown')
       decoration = new BoxDecoration(backgroundColor: const Color(0xFFFF0000));
     else if (event.type == 'pointerup')

examples/rendering/spinning_flex.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/rendering.dart';
@@ -15,15 +15,15 @@ RenderTransform transformBox;
 void main() {
   RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
 
-  void addFlexChildSolidColor(RenderFlex parent, sky.Color backgroundColor, { int flex: 0 }) {
+  void addFlexChildSolidColor(RenderFlex parent, ui.Color backgroundColor, { int flex: 0 }) {
     RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);
     parent.add(child);
     child.parentData.flex = flex;
   }
 
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFF00FF), flex: 1);
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFFFF00), flex: 2);
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFF00FFFF), flex: 1);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFFFF00FF), flex: 1);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFFFFFF00), flex: 2);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFF00FFFF), flex: 1);
 
   transformBox = new RenderTransform(child: flexRoot, transform: new Matrix4.identity());
 

examples/rendering/touch_demo.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
@@ -24,7 +24,7 @@ class Dot {
 
   Dot({ Color color }) : _paint = new Paint()..color = color;
 
-  void update(sky.PointerEvent event) {
+  void update(ui.PointerEvent event) {
     position = new Point(event.x, event.y);
     radius = 5 + (95 * event.pressure);
   }
@@ -39,8 +39,8 @@ class RenderTouchDemo extends RenderBox {
 
   RenderTouchDemo();
 
-  void handleEvent(sky.Event event, BoxHitTestEntry entry) {
-    if (event is sky.PointerEvent) {
+  void handleEvent(ui.Event event, BoxHitTestEntry entry) {
+    if (event is ui.PointerEvent) {
       switch (event.type) {
         case 'pointerdown':
           Color color = kColors[event.pointer.remainder(kColors.length)];

examples/rendering/transform.dart

@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 
 void main() {
   RenderDecoratedBox green = new RenderDecoratedBox(
-    decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF00FF00))
+    decoration: new BoxDecoration(backgroundColor: const ui.Color(0xFF00FF00))
   );
   RenderConstrainedBox box = new RenderConstrainedBox(
-    additionalConstraints: new BoxConstraints.tight(const sky.Size(200.0, 200.0)),
+    additionalConstraints: new BoxConstraints.tight(const ui.Size(200.0, 200.0)),
     child: green
   );
 

examples/stocks/lib/main.dart

@@ -6,7 +6,7 @@ library stocks;
 
 import 'dart:async';
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';

examples/stocks/lib/stock_arrow.dart

@@ -25,7 +25,7 @@ class StockArrow extends StatelessComponent {
     // TODO(jackson): This should change colors with the theme
     Color color = _colorForPercentChange(percentChange);
     const double kSize = 40.0;
-    var arrow = new CustomPaint(callback: (sky.Canvas canvas, Size size) {
+    var arrow = new CustomPaint(callback: (ui.Canvas canvas, Size size) {
       Paint paint = new Paint()..color = color;
       paint.strokeWidth = 1.0;
       const double padding = 2.0;
@@ -49,11 +49,11 @@ class StockArrow extends StatelessComponent {
       path.lineTo(centerX + w, arrowY + h);
       path.lineTo(centerX - w, arrowY + h);
       path.close();
-      paint.setStyle(sky.PaintingStyle.fill);
+      paint.setStyle(ui.PaintingStyle.fill);
       canvas.drawPath(path, paint);
 
       // Draw a circle that circumscribes the arrow.
-      paint.setStyle(sky.PaintingStyle.stroke);
+      paint.setStyle(ui.PaintingStyle.stroke);
       canvas.drawCircle(new Point(centerX, centerY), r, paint);
     });
 

examples/stocks/lib/stock_menu.dart

@@ -12,8 +12,8 @@ Future showStockMenu(NavigatorState navigator, { bool autorefresh, ValueChanged
   switch (await showMenu(
     navigator: navigator,
     position: new MenuPosition(
-      right: sky.view.paddingRight + _kMenuMargin,
-      top: sky.view.paddingTop + _kMenuMargin
+      right: ui.view.paddingRight + _kMenuMargin,
+      top: ui.view.paddingTop + _kMenuMargin
     ),
     builder: (NavigatorState navigator) {
       return <PopupMenuItem>[

examples/widgets/card_collection.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/painting.dart';
@@ -299,7 +299,7 @@ class CardCollectionState extends State<CardCollection> {
     });
   }
 
-  sky.Shader _createShader(Rect bounds) {
+  ui.Shader _createShader(Rect bounds) {
     return new LinearGradient(
         begin: Point.origin,
         end: new Point(0.0, bounds.height),

examples/widgets/overlay_geometry.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
@@ -31,14 +31,14 @@ class Marker extends StatelessComponent {
   final double size;
   final MarkerType type;
 
-  void paintMarker(sky.Canvas canvas, _) {
+  void paintMarker(ui.Canvas canvas, _) {
     Paint paint = new Paint()..color = const Color(0x8000FF00);
-    paint.setStyle(sky.PaintingStyle.fill);
+    paint.setStyle(ui.PaintingStyle.fill);
     double r = size / 2.0;
     canvas.drawCircle(new Point(r, r), r, paint);
 
     paint.color = const Color(0xFFFFFFFF);
-    paint.setStyle(sky.PaintingStyle.stroke);
+    paint.setStyle(ui.PaintingStyle.stroke);
     paint.strokeWidth = 1.0;
     if (type == MarkerType.topLeft) {
       canvas.drawLine(new Point(r, r), new Point(r + r - 1.0, r), paint);
@@ -103,7 +103,7 @@ class OverlayGeometryAppState extends State<OverlayGeometryApp> {
     });
   }
 
-  void handlePointerDown(GlobalKey target, sky.PointerEvent event) {
+  void handlePointerDown(GlobalKey target, ui.PointerEvent event) {
     setState(() {
       markers[MarkerType.touch] = new Point(event.x, event.y);
       final RenderBox box = target.currentContext.findRenderObject();

examples/widgets/spinning_mixed.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/material.dart';
@@ -11,7 +11,7 @@ import 'package:flutter/rendering.dart';
 import '../rendering/solid_color_box.dart';
 
 // Solid colour, RenderObject version
-void addFlexChildSolidColor(RenderFlex parent, sky.Color backgroundColor, { int flex: 0 }) {
+void addFlexChildSolidColor(RenderFlex parent, ui.Color backgroundColor, { int flex: 0 }) {
   RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);
   parent.add(child);
   child.parentData.flex = flex;
@@ -81,9 +81,9 @@ void main() {
   new RenderBoxToWidgetAdapter(proxy, builder); // adds itself to proxy
 
   RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFFFF00FF), flex: 1);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFFFF00FF), flex: 1);
   flexRoot.add(proxy);
-  addFlexChildSolidColor(flexRoot, const sky.Color(0xFF0000FF), flex: 1);
+  addFlexChildSolidColor(flexRoot, const ui.Color(0xFF0000FF), flex: 1);
 
   transformBox = new RenderTransform(child: flexRoot, transform: new Matrix4.identity());
   RenderPadding root = new RenderPadding(padding: new EdgeDims.all(80.0), child: transformBox);

packages/flutter/lib/src/animation/scheduler.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:collection';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 /// Slows down animations by this factor to help in development.
 double timeDilation = 1.0;
@@ -20,7 +20,7 @@ typedef void SchedulerCallback(Duration timeStamp);
 class Scheduler {
   /// Requires clients to use the [scheduler] singleton
   Scheduler._() {
-    sky.view.setFrameCallback(beginFrame);
+    ui.view.setFrameCallback(beginFrame);
   }
 
   bool _haveScheduledVisualUpdate = false;
@@ -88,7 +88,7 @@ class Scheduler {
   void ensureVisualUpdate() {
     if (_haveScheduledVisualUpdate)
       return;
-    sky.view.scheduleFrame();
+    ui.view.scheduleFrame();
     _haveScheduledVisualUpdate = true;
   }
 }

packages/flutter/lib/src/animation/scroll_behavior.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:newton/newton.dart';
 
@@ -109,11 +109,11 @@ Simulation _createFlingScrollSimulation(double position, double velocity, double
   // scrolling less than one logical pixel per frame. We're essentially
   // normalizing by the devicePixelRatio so that the threshold has the
   // same effect independent of the device's pixel density.
-  double endVelocity = 15.0 * sky.view.devicePixelRatio;
+  double endVelocity = 15.0 * ui.view.devicePixelRatio;
 
   // Similar to endVelocity. Stop scrolling when we're this close to
   // destiniation scroll offset.
-  double endDistance = 0.5 * sky.view.devicePixelRatio;
+  double endDistance = 0.5 * ui.view.devicePixelRatio;
 
   SpringDescription spring = new SpringDescription.withDampingRatio(mass: 1.0, springConstant: 170.0, ratio: 1.1);
   ScrollSimulation simulation =
@@ -124,7 +124,7 @@ Simulation _createFlingScrollSimulation(double position, double velocity, double
 
 Simulation _createSnapScrollSimulation(double startOffset, double endOffset, double velocity) {
   double startVelocity = velocity * _kSecondsPerMillisecond;
-  double endVelocity = 15.0 * sky.view.devicePixelRatio * velocity.sign;
+  double endVelocity = 15.0 * ui.view.devicePixelRatio * velocity.sign;
   return new FrictionSimulation.through(startOffset, endOffset, startVelocity, endVelocity);
 }
 

packages/flutter/lib/src/gestures/drag.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'recognizer.dart';
@@ -16,17 +16,17 @@ enum DragState {
 
 typedef void GestureDragStartCallback();
 typedef void GestureDragUpdateCallback(double delta);
-typedef void GestureDragEndCallback(sky.Offset velocity);
+typedef void GestureDragEndCallback(ui.Offset velocity);
 
 typedef void GesturePanStartCallback();
-typedef void GesturePanUpdateCallback(sky.Offset delta);
-typedef void GesturePanEndCallback(sky.Offset velocity);
+typedef void GesturePanUpdateCallback(ui.Offset delta);
+typedef void GesturePanEndCallback(ui.Offset velocity);
 
 typedef void _GesturePolymorphicUpdateCallback<T>(T delta);
 
-int _eventTime(sky.PointerEvent event) => (event.timeStamp * 1000.0).toInt(); // microseconds
+int _eventTime(ui.PointerEvent event) => (event.timeStamp * 1000.0).toInt(); // microseconds
 
-bool _isFlingGesture(sky.GestureVelocity velocity) {
+bool _isFlingGesture(ui.GestureVelocity velocity) {
   double velocitySquared = velocity.x * velocity.x + velocity.y * velocity.y;
   return velocity.isValid &&
     velocitySquared > kMinFlingVelocity * kMinFlingVelocity &&
@@ -45,12 +45,12 @@ abstract class _DragGestureRecognizer<T extends dynamic> extends GestureRecogniz
   T _pendingDragDelta;
 
   T get _initialPendingDragDelta;
-  T _getDragDelta(sky.PointerEvent event);
+  T _getDragDelta(ui.PointerEvent event);
   bool get _hasSufficientPendingDragDeltaToAccept;
 
-  final sky.VelocityTracker _velocityTracker = new sky.VelocityTracker();
+  final ui.VelocityTracker _velocityTracker = new ui.VelocityTracker();
 
-  void addPointer(sky.PointerEvent event) {
+  void addPointer(ui.PointerEvent event) {
     startTrackingPointer(event.pointer);
     if (_state == DragState.ready) {
       _state = DragState.possible;
@@ -58,7 +58,7 @@ abstract class _DragGestureRecognizer<T extends dynamic> extends GestureRecogniz
     }
   }
 
-  void handleEvent(sky.PointerEvent event) {
+  void handleEvent(ui.PointerEvent event) {
     assert(_state != DragState.ready);
     if (event.type == 'pointermove') {
       _velocityTracker.addPosition(_eventTime(event), event.pointer, event.x, event.y);
@@ -96,10 +96,10 @@ abstract class _DragGestureRecognizer<T extends dynamic> extends GestureRecogniz
     bool wasAccepted = (_state == DragState.accepted);
     _state = DragState.ready;
     if (wasAccepted && onEnd != null) {
-      sky.GestureVelocity gestureVelocity = _velocityTracker.getVelocity(pointer);
-      sky.Offset velocity = sky.Offset.zero;
+      ui.GestureVelocity gestureVelocity = _velocityTracker.getVelocity(pointer);
+      ui.Offset velocity = ui.Offset.zero;
       if (_isFlingGesture(gestureVelocity))
-        velocity = new sky.Offset(gestureVelocity.x, gestureVelocity.y);
+        velocity = new ui.Offset(gestureVelocity.x, gestureVelocity.y);
       onEnd(velocity);
     }
     _velocityTracker.reset();
@@ -120,7 +120,7 @@ class VerticalDragGestureRecognizer extends _DragGestureRecognizer<double> {
   }) : super(router: router, onStart: onStart, onUpdate: onUpdate, onEnd: onEnd);
 
   double get _initialPendingDragDelta => 0.0;
-  double _getDragDelta(sky.PointerEvent event) => event.dy;
+  double _getDragDelta(ui.PointerEvent event) => event.dy;
   bool get _hasSufficientPendingDragDeltaToAccept => _pendingDragDelta.abs() > kTouchSlop;
 }
 
@@ -133,11 +133,11 @@ class HorizontalDragGestureRecognizer extends _DragGestureRecognizer<double> {
   }) : super(router: router, onStart: onStart, onUpdate: onUpdate, onEnd: onEnd);
 
   double get _initialPendingDragDelta => 0.0;
-  double _getDragDelta(sky.PointerEvent event) => event.dx;
+  double _getDragDelta(ui.PointerEvent event) => event.dx;
   bool get _hasSufficientPendingDragDeltaToAccept => _pendingDragDelta.abs() > kTouchSlop;
 }
 
-class PanGestureRecognizer extends _DragGestureRecognizer<sky.Offset> {
+class PanGestureRecognizer extends _DragGestureRecognizer<ui.Offset> {
   PanGestureRecognizer({
     PointerRouter router,
     GesturePanStartCallback onStart,
@@ -145,8 +145,8 @@ class PanGestureRecognizer extends _DragGestureRecognizer<sky.Offset> {
     GesturePanEndCallback onEnd
   }) : super(router: router, onStart: onStart, onUpdate: onUpdate, onEnd: onEnd);
 
-  sky.Offset get _initialPendingDragDelta => sky.Offset.zero;
-  sky.Offset _getDragDelta(sky.PointerEvent event) => new sky.Offset(event.dx, event.dy);
+  ui.Offset get _initialPendingDragDelta => ui.Offset.zero;
+  ui.Offset _getDragDelta(ui.PointerEvent event) => new ui.Offset(event.dx, event.dy);
   bool get _hasSufficientPendingDragDeltaToAccept {
     return _pendingDragDelta.distance > kPanSlop;
   }

packages/flutter/lib/src/gestures/long_press.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'constants.dart';
@@ -22,7 +22,7 @@ class LongPressGestureRecognizer extends PrimaryPointerGestureRecognizer {
     onLongPress();
   }
 
-  void handlePrimaryPointer(sky.PointerEvent event) {
+  void handlePrimaryPointer(ui.PointerEvent event) {
     if (event.type == 'pointerup')
       resolve(GestureDisposition.rejected);
   }

packages/flutter/lib/src/gestures/pointer_router.dart

@@ -2,18 +2,18 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
-/// A callback that receives a [sky.PointerEvent]
-typedef void PointerRoute(sky.PointerEvent event);
+/// A callback that receives a [ui.PointerEvent]
+typedef void PointerRoute(ui.PointerEvent event);
 
-/// A routing table for [sky.PointerEvent] events.
+/// A routing table for [ui.PointerEvent] events.
 class PointerRouter {
   final Map<int, List<PointerRoute>> _routeMap = new Map<int, List<PointerRoute>>();
 
   /// Adds a route to the routing table
   ///
-  /// Whenever this object routes a [sky.PointerEvent] corresponding to
+  /// Whenever this object routes a [ui.PointerEvent] corresponding to
   /// pointer, call route.
   void addRoute(int pointer, PointerRoute route) {
     List<PointerRoute> routes = _routeMap.putIfAbsent(pointer, () => new List<PointerRoute>());
@@ -23,7 +23,7 @@ class PointerRouter {
 
   /// Removes a route from the routing table
   ///
-  /// No longer call route when routing a [sky.PointerEvent] corresponding to
+  /// No longer call route when routing a [ui.PointerEvent] corresponding to
   /// pointer. Requires that this route was previously added to the router.
   void removeRoute(int pointer, PointerRoute route) {
     assert(_routeMap.containsKey(pointer));
@@ -37,7 +37,7 @@ class PointerRouter {
   /// Call the routes registed for this pointer event.
   ///
   /// Calls the routes in the order in which they were added to the route.
-  void route(sky.PointerEvent event) {
+  void route(ui.PointerEvent event) {
     List<PointerRoute> routes = _routeMap[event.pointer];
     if (routes == null)
       return;

packages/flutter/lib/src/gestures/recognizer.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'constants.dart';
@@ -22,9 +22,9 @@ abstract class GestureRecognizer extends GestureArenaMember {
   final Set<int> _trackedPointers = new Set<int>();
 
   /// The primary entry point for users of this class.
-  void addPointer(sky.PointerEvent event);
+  void addPointer(ui.PointerEvent event);
 
-  void handleEvent(sky.PointerEvent event);
+  void handleEvent(ui.PointerEvent event);
   void acceptGesture(int pointer) { }
   void rejectGesture(int pointer) { }
   void didStopTrackingLastPointer(int pointer);
@@ -58,7 +58,7 @@ abstract class GestureRecognizer extends GestureArenaMember {
       didStopTrackingLastPointer(pointer);
   }
 
-  void stopTrackingIfPointerNoLongerDown(sky.PointerEvent event) {
+  void stopTrackingIfPointerNoLongerDown(ui.PointerEvent event) {
     if (event.type == 'pointerup' || event.type == 'pointercancel')
       stopTrackingPointer(event.pointer);
   }
@@ -71,8 +71,8 @@ enum GestureRecognizerState {
   defunct
 }
 
-sky.Point _getPoint(sky.PointerEvent event) {
-  return new sky.Point(event.x, event.y);
+ui.Point _getPoint(ui.PointerEvent event) {
+  return new ui.Point(event.x, event.y);
 }
 
 abstract class PrimaryPointerGestureRecognizer extends GestureRecognizer {
@@ -83,10 +83,10 @@ abstract class PrimaryPointerGestureRecognizer extends GestureRecognizer {
 
   GestureRecognizerState state = GestureRecognizerState.ready;
   int primaryPointer;
-  sky.Point initialPosition;
+  ui.Point initialPosition;
   Timer _timer;
 
-  void addPointer(sky.PointerEvent event) {
+  void addPointer(ui.PointerEvent event) {
     startTrackingPointer(event.pointer);
     if (state == GestureRecognizerState.ready) {
       state = GestureRecognizerState.possible;
@@ -97,7 +97,7 @@ abstract class PrimaryPointerGestureRecognizer extends GestureRecognizer {
     }
   }
 
-  void handleEvent(sky.PointerEvent event) {
+  void handleEvent(ui.PointerEvent event) {
     assert(state != GestureRecognizerState.ready);
     if (state == GestureRecognizerState.possible && event.pointer == primaryPointer) {
       // TODO(abarth): Maybe factor the slop handling out into a separate class?
@@ -110,7 +110,7 @@ abstract class PrimaryPointerGestureRecognizer extends GestureRecognizer {
   }
 
   /// Override to provide behavior for the primary pointer when the gesture is still possible.
-  void handlePrimaryPointer(sky.PointerEvent event);
+  void handlePrimaryPointer(ui.PointerEvent event);
 
   /// Override to be notified with [deadline] is exceeded.
   ///
@@ -143,8 +143,8 @@ abstract class PrimaryPointerGestureRecognizer extends GestureRecognizer {
     }
   }
 
-  double _getDistance(sky.PointerEvent event) {
-    sky.Offset offset = _getPoint(event) - initialPosition;
+  double _getDistance(ui.PointerEvent event) {
+    ui.Offset offset = _getPoint(event) - initialPosition;
     return offset.distance;
   }
 

packages/flutter/lib/src/gestures/scale.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'recognizer.dart';
@@ -15,8 +15,8 @@ enum ScaleState {
   started
 }
 
-typedef void GestureScaleStartCallback(sky.Point focalPoint);
-typedef void GestureScaleUpdateCallback(double scale, sky.Point focalPoint);
+typedef void GestureScaleStartCallback(ui.Point focalPoint);
+typedef void GestureScaleUpdateCallback(double scale, ui.Point focalPoint);
 typedef void GestureScaleEndCallback();
 
 class ScaleGestureRecognizer extends GestureRecognizer {
@@ -31,21 +31,21 @@ class ScaleGestureRecognizer extends GestureRecognizer {
 
   double _initialSpan;
   double _currentSpan;
-  Map<int, sky.Point> _pointerLocations;
+  Map<int, ui.Point> _pointerLocations;
 
   double get _scaleFactor => _initialSpan > 0.0 ? _currentSpan / _initialSpan : 1.0;
 
-  void addPointer(sky.PointerEvent event) {
+  void addPointer(ui.PointerEvent event) {
     startTrackingPointer(event.pointer);
     if (_state == ScaleState.ready) {
       _state = ScaleState.possible;
       _initialSpan = 0.0;
       _currentSpan = 0.0;
-      _pointerLocations = new Map<int, sky.Point>();
+      _pointerLocations = new Map<int, ui.Point>();
     }
   }
 
-  void handleEvent(sky.PointerEvent event) {
+  void handleEvent(ui.PointerEvent event) {
     assert(_state != ScaleState.ready);
     bool configChanged = false;
     switch(event.type) {
@@ -55,10 +55,10 @@ class ScaleGestureRecognizer extends GestureRecognizer {
         break;
       case 'pointerdown':
         configChanged = true;
-        _pointerLocations[event.pointer] = new sky.Point(event.x, event.y);
+        _pointerLocations[event.pointer] = new ui.Point(event.x, event.y);
         break;
       case 'pointermove':
-        _pointerLocations[event.pointer] = new sky.Point(event.x, event.y);
+        _pointerLocations[event.pointer] = new ui.Point(event.x, event.y);
         break;
     }
 
@@ -71,10 +71,10 @@ class ScaleGestureRecognizer extends GestureRecognizer {
     int count = _pointerLocations.keys.length;
 
     // Compute the focal point
-    sky.Point focalPoint = sky.Point.origin;
+    ui.Point focalPoint = ui.Point.origin;
     for (int pointer in _pointerLocations.keys)
       focalPoint += _pointerLocations[pointer].toOffset();
-    focalPoint = new sky.Point(focalPoint.x / count, focalPoint.y / count);
+    focalPoint = new ui.Point(focalPoint.x / count, focalPoint.y / count);
 
     // Span is the average deviation from focal point
     double totalDeviation = 0.0;

packages/flutter/lib/src/gestures/show_press.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'constants.dart';
@@ -23,7 +23,7 @@ class ShowPressGestureRecognizer extends PrimaryPointerGestureRecognizer {
     onShowPress();
   }
 
-  void handlePrimaryPointer(sky.PointerEvent event) {
+  void handlePrimaryPointer(ui.PointerEvent event) {
     if (event.type == 'pointerup')
       resolve(GestureDisposition.rejected);
   }

packages/flutter/lib/src/gestures/tap.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'arena.dart';
 import 'recognizer.dart';
@@ -17,7 +17,7 @@ class TapGestureRecognizer extends PrimaryPointerGestureRecognizer {
   GestureTapCallback onTapDown;
   GestureTapCallback onTapCancel;
 
-  void handlePrimaryPointer(sky.PointerEvent event) {
+  void handlePrimaryPointer(ui.PointerEvent event) {
     if (event.type == 'pointerdown') {
       if (onTapDown != null)
         onTapDown();

packages/flutter/lib/src/material/checkbox.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
@@ -12,8 +12,8 @@ import 'theme.dart';
 export 'package:flutter/rendering.dart' show ValueChanged;
 
 const double _kMidpoint = 0.5;
-const sky.Color _kLightUncheckedColor = const sky.Color(0x8A000000);
-const sky.Color _kDarkUncheckedColor = const sky.Color(0xB2FFFFFF);
+const ui.Color _kLightUncheckedColor = const ui.Color(0x8A000000);
+const ui.Color _kDarkUncheckedColor = const ui.Color(0xB2FFFFFF);
 const double _kEdgeSize = 18.0;
 const double _kEdgeRadius = 1.0;
 const double _kStrokeWidth = 2.0;
@@ -126,7 +126,7 @@ class _RenderCheckbox extends RenderToggleable {
   void paint(PaintingContext context, Offset offset) {
     final PaintingCanvas canvas = context.canvas;
     // Choose a color between grey and the theme color
-    sky.Paint paint = new sky.Paint()
+    ui.Paint paint = new ui.Paint()
       ..strokeWidth = _kStrokeWidth
       ..color = uncheckedColor;
 
@@ -134,25 +134,25 @@ class _RenderCheckbox extends RenderToggleable {
     // Because we have a stroke size of 2, we should have a minimum 1.0 inset.
     double inset = 2.0 - (position - _kMidpoint).abs() * 2.0;
     double rectSize = _kEdgeSize - inset * _kStrokeWidth;
-    sky.Rect rect =
-      new sky.Rect.fromLTWH(offset.dx + inset, offset.dy + inset, rectSize, rectSize);
+    ui.Rect rect =
+      new ui.Rect.fromLTWH(offset.dx + inset, offset.dy + inset, rectSize, rectSize);
     // Create an inner rectangle to cover inside of rectangle. This is needed to avoid
     // painting artefacts caused by overlayed paintings.
-    sky.Rect innerRect = rect.deflate(1.0);
-    sky.RRect rrect = new sky.RRect()
+    ui.Rect innerRect = rect.deflate(1.0);
+    ui.RRect rrect = new ui.RRect()
       ..setRectXY(rect, _kEdgeRadius, _kEdgeRadius);
 
     // Outline of the empty rrect
-    paint.setStyle(sky.PaintingStyle.stroke);
+    paint.setStyle(ui.PaintingStyle.stroke);
     canvas.drawRRect(rrect, paint);
 
     // Radial gradient that changes size
     if (position > 0) {
-      paint.setStyle(sky.PaintingStyle.fill);
-      paint.setShader(new sky.Gradient.radial(
+      paint.setStyle(ui.PaintingStyle.fill);
+      paint.setShader(new ui.Gradient.radial(
           new Point(_kEdgeSize / 2.0, _kEdgeSize / 2.0),
           _kEdgeSize * (_kMidpoint - position) * 8.0, [
-        const sky.Color(0x00000000),
+        const ui.Color(0x00000000),
         uncheckedColor
       ]));
       canvas.drawRect(innerRect, paint);
@@ -164,22 +164,22 @@ class _RenderCheckbox extends RenderToggleable {
       // First draw a rounded rect outline then fill inner rectangle with accent color.
       paint.color = new Color.fromARGB((t * 255).floor(), _accentColor.red,
           _accentColor.green, _accentColor.blue);
-      paint.setStyle(sky.PaintingStyle.stroke);
+      paint.setStyle(ui.PaintingStyle.stroke);
       canvas.drawRRect(rrect, paint);
-      paint.setStyle(sky.PaintingStyle.fill);
+      paint.setStyle(ui.PaintingStyle.fill);
       canvas.drawRect(innerRect, paint);
 
       // White inner check
-      paint.color = const sky.Color(0xFFFFFFFF);
-      paint.setStyle(sky.PaintingStyle.stroke);
-      sky.Path path = new sky.Path();
-      sky.Point start = new sky.Point(_kEdgeSize * 0.15, _kEdgeSize * 0.45);
-      sky.Point mid = new sky.Point(_kEdgeSize * 0.4, _kEdgeSize * 0.7);
-      sky.Point end = new sky.Point(_kEdgeSize * 0.85, _kEdgeSize * 0.25);
+      paint.color = const ui.Color(0xFFFFFFFF);
+      paint.setStyle(ui.PaintingStyle.stroke);
+      ui.Path path = new ui.Path();
+      ui.Point start = new ui.Point(_kEdgeSize * 0.15, _kEdgeSize * 0.45);
+      ui.Point mid = new ui.Point(_kEdgeSize * 0.4, _kEdgeSize * 0.7);
+      ui.Point end = new ui.Point(_kEdgeSize * 0.85, _kEdgeSize * 0.25);
       Point lerp(Point p1, Point p2, double t) =>
           new Point(p1.x * (1.0 - t) + p2.x * t, p1.y * (1.0 - t) + p2.y * t);
-      sky.Point drawStart = lerp(start, mid, 1.0 - t);
-      sky.Point drawEnd = lerp(mid, end, t);
+      ui.Point drawStart = lerp(start, mid, 1.0 - t);
+      ui.Point drawEnd = lerp(mid, end, t);
       path.moveTo(offset.dx + drawStart.x, offset.dy + drawStart.y);
       path.lineTo(offset.dx + mid.x, offset.dy + mid.y);
       path.lineTo(offset.dx + drawEnd.x, offset.dy + drawEnd.y);

packages/flutter/lib/src/material/drawer_item.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/painting.dart';
@@ -49,10 +49,10 @@ class _DrawerItemState extends State<DrawerItem> {
     return Colors.transparent;
   }
 
-  sky.ColorFilter _getColorFilter(ThemeData themeData) {
+  ui.ColorFilter _getColorFilter(ThemeData themeData) {
     if (config.selected)
-      return new sky.ColorFilter.mode(themeData.primaryColor, sky.TransferMode.srcATop);
-    return new sky.ColorFilter.mode(const Color(0x73000000), sky.TransferMode.dstIn);
+      return new ui.ColorFilter.mode(themeData.primaryColor, ui.TransferMode.srcATop);
+    return new ui.ColorFilter.mode(const Color(0x73000000), ui.TransferMode.dstIn);
   }
 
   Widget build(BuildContext context) {

packages/flutter/lib/src/material/icon.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
@@ -62,7 +62,7 @@ class Icon extends StatelessComponent {
   final int size;
   final String type;
   final IconThemeColor color;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
 
   String _getColorSuffix(BuildContext context) {
     IconThemeColor iconThemeColor = color;

packages/flutter/lib/src/material/icon_button.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/widgets.dart';
@@ -20,7 +20,7 @@ class IconButton extends StatelessComponent {
 
   final String icon;
   final IconThemeColor color;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
   final GestureTapCallback onPressed;
 
   Widget build(BuildContext context) {

packages/flutter/lib/src/material/ink_well.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/gestures.dart';
@@ -91,7 +91,7 @@ class _InkSplash {
 
   void paint(PaintingCanvas canvas) {
     int opacity = (_kSplashInitialOpacity * (1.1 - (_radius.value / _targetRadius))).floor();
-    sky.Paint paint = new sky.Paint()..color = new sky.Color(opacity << 24);
+    ui.Paint paint = new ui.Paint()..color = new ui.Color(opacity << 24);
     double radius = _pinnedRadius == null ? _radius.value : _pinnedRadius;
     canvas.drawCircle(position, radius, paint);
   }
@@ -137,7 +137,7 @@ class _RenderInkWell extends RenderProxyBox {
   TapGestureRecognizer _tap;
   LongPressGestureRecognizer _longPress;
 
-  void handleEvent(sky.Event event, BoxHitTestEntry entry) {
+  void handleEvent(ui.Event event, BoxHitTestEntry entry) {
     if (event.type == 'pointerdown' && (_tap != null || _longPress != null)) {
       _tap?.addPointer(event);
       _longPress?.addPointer(event);

packages/flutter/lib/src/material/material_app.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 import 'package:flutter/services.dart';
@@ -56,7 +56,7 @@ class _MaterialAppState extends State<MaterialApp> {
     super.dispose();
   }
 
-  void _backHandler(sky.Event event) {
+  void _backHandler(ui.Event event) {
     assert(mounted);
     if (event.type == 'back') {
       NavigatorState navigator = _navigator.currentState;

packages/flutter/lib/src/material/popup_menu.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/painting.dart';
@@ -75,7 +75,7 @@ class PopupMenu extends StatelessComponent {
         variables: [width, height],
         builder: (BuildContext context) {
           return new CustomPaint(
-            callback: (sky.Canvas canvas, Size size) {
+            callback: (ui.Canvas canvas, Size size) {
               double widthValue = width.value * size.width;
               double heightValue = height.value * size.height;
               painter.paint(canvas, new Rect.fromLTWH(size.width - widthValue, 0.0, widthValue, heightValue));

packages/flutter/lib/src/material/progress_indicator.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/widgets.dart';
@@ -76,10 +76,10 @@ class LinearProgressIndicator extends ProgressIndicator {
     double bufferValue
   }) : super(key: key, value: value, bufferValue: bufferValue);
 
-  void _paint(BuildContext context, double performanceValue, sky.Canvas canvas, Size size) {
+  void _paint(BuildContext context, double performanceValue, ui.Canvas canvas, Size size) {
     Paint paint = new Paint()
       ..color = _getBackgroundColor(context)
-      ..setStyle(sky.PaintingStyle.fill);
+      ..setStyle(ui.PaintingStyle.fill);
     canvas.drawRect(Point.origin & size, paint);
 
     paint.color = _getValueColor(context);
@@ -103,7 +103,7 @@ class LinearProgressIndicator extends ProgressIndicator {
       ),
       child: new CustomPaint(
         token: _getCustomPaintToken(performanceValue),
-        callback: (sky.Canvas canvas, Size size) {
+        callback: (ui.Canvas canvas, Size size) {
           _paint(context, performanceValue, canvas, size);
         }
       )
@@ -124,15 +124,15 @@ class CircularProgressIndicator extends ProgressIndicator {
     double bufferValue
   }) : super(key: key, value: value, bufferValue: bufferValue);
 
-  void _paint(BuildContext context, double performanceValue, sky.Canvas canvas, Size size) {
+  void _paint(BuildContext context, double performanceValue, ui.Canvas canvas, Size size) {
     Paint paint = new Paint()
       ..color = _getValueColor(context)
       ..strokeWidth = _kCircularProgressIndicatorStrokeWidth
-      ..setStyle(sky.PaintingStyle.stroke);
+      ..setStyle(ui.PaintingStyle.stroke);
 
     if (value != null) {
       double angle = value.clamp(0.0, 1.0) * _kSweep;
-      sky.Path path = new sky.Path()
+      ui.Path path = new ui.Path()
         ..arcTo(Point.origin & size, _kStartAngle, angle, false);
       canvas.drawPath(path, paint);
     } else {
@@ -140,7 +140,7 @@ class CircularProgressIndicator extends ProgressIndicator {
       double endAngle = startAngle + _kTwoPI * 0.75;
       double arcAngle = startAngle.clamp(0.0, _kTwoPI);
       double arcSweep = endAngle.clamp(0.0, _kTwoPI) - arcAngle;
-      sky.Path path = new sky.Path()
+      ui.Path path = new ui.Path()
         ..arcTo(Point.origin & size, _kStartAngle + arcAngle, arcSweep, false);
       canvas.drawPath(path, paint);
     }
@@ -154,7 +154,7 @@ class CircularProgressIndicator extends ProgressIndicator {
       ),
       child: new CustomPaint(
         token: _getCustomPaintToken(performanceValue),
-        callback: (sky.Canvas canvas, Size size) {
+        callback: (ui.Canvas canvas, Size size) {
           _paint(context, performanceValue, canvas, size);
         }
       )

packages/flutter/lib/src/material/radial_reaction.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Point, Offset, Color, Paint;
 
 import 'package:flutter/animation.dart';
@@ -82,7 +82,7 @@ class RadialReaction {
   final Paint _innerPaint = new Paint();
 
   /// Paint the reaction onto the given canvas at the given offset
-  void paint(sky.Canvas canvas, Offset offset) {
+  void paint(ui.Canvas canvas, Offset offset) {
     _outerPaint.color = _kOuterColor.withAlpha(_roundOpacity(_outerOpacity.value * _fade.value));
     canvas.drawCircle(center + offset, radius, _outerPaint);
 

packages/flutter/lib/src/material/radio.dart

@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/widgets.dart';
 
 import 'theme.dart';
 
-const sky.Color _kLightOffColor = const sky.Color(0x8A000000);
-const sky.Color _kDarkOffColor = const sky.Color(0xB2FFFFFF);
+const ui.Color _kLightOffColor = const ui.Color(0x8A000000);
+const ui.Color _kDarkOffColor = const ui.Color(0xB2FFFFFF);
 
 typedef void RadioValueChanged(Object value);
 
@@ -45,18 +45,18 @@ class Radio extends StatelessComponent {
         width: kDiameter,
         height: kDiameter,
         child: new CustomPaint(
-          callback: (sky.Canvas canvas, Size size) {
+          callback: (ui.Canvas canvas, Size size) {
 
             Paint paint = new Paint()..color = _getColor(context);
 
             // Draw the outer circle
-            paint.setStyle(sky.PaintingStyle.stroke);
+            paint.setStyle(ui.PaintingStyle.stroke);
             paint.strokeWidth = 2.0;
             canvas.drawCircle(const Point(kOuterRadius, kOuterRadius), kOuterRadius, paint);
 
             // Draw the inner circle
             if (value == groupValue) {
-              paint.setStyle(sky.PaintingStyle.fill);
+              paint.setStyle(ui.PaintingStyle.fill);
               canvas.drawCircle(const Point(kOuterRadius, kOuterRadius), kInnerRadius, paint);
             }
           }

packages/flutter/lib/src/material/scaffold.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
@@ -28,7 +28,7 @@ class Scaffold extends StatelessComponent {
   Widget build(BuildContext context) {
     double toolBarHeight = 0.0;
     if (toolBar != null)
-      toolBarHeight = kToolBarHeight + sky.view.paddingTop;
+      toolBarHeight = kToolBarHeight + ui.view.paddingTop;
 
     double statusBarHeight = 0.0;
     if (statusBar != null)

packages/flutter/lib/src/material/switch.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 import 'package:flutter/rendering.dart';
@@ -15,8 +15,8 @@ import 'theme.dart';
 
 export 'package:flutter/rendering.dart' show ValueChanged;
 
-const sky.Color _kThumbOffColor = const sky.Color(0xFFFAFAFA);
-const sky.Color _kTrackOffColor = const sky.Color(0x42000000);
+const ui.Color _kThumbOffColor = const ui.Color(0xFFFAFAFA);
+const ui.Color _kTrackOffColor = const ui.Color(0x42000000);
 const double _kSwitchWidth = 35.0;
 const double _kThumbRadius = 10.0;
 const double _kSwitchHeight = _kThumbRadius * 2.0;
@@ -82,8 +82,8 @@ class _RenderSwitch extends RenderToggleable {
 
   RadialReaction _radialReaction;
 
-  void handleEvent(sky.Event event, BoxHitTestEntry entry) {
-    if (event is sky.PointerEvent) {
+  void handleEvent(ui.Event event, BoxHitTestEntry entry) {
+    if (event is ui.PointerEvent) {
       if (event.type == 'pointerdown')
         _showRadialReaction(entry.localPosition);
       else if (event.type == 'pointerup')
@@ -112,21 +112,21 @@ class _RenderSwitch extends RenderToggleable {
 
   void paint(PaintingContext context, Offset offset) {
     final PaintingCanvas canvas = context.canvas;
-    sky.Color thumbColor = _kThumbOffColor;
-    sky.Color trackColor = _kTrackOffColor;
+    ui.Color thumbColor = _kThumbOffColor;
+    ui.Color trackColor = _kTrackOffColor;
     if (value) {
       thumbColor = _thumbColor;
-      trackColor = new sky.Color(_thumbColor.value & 0x80FFFFFF);
+      trackColor = new ui.Color(_thumbColor.value & 0x80FFFFFF);
     }
 
     // Draw the track rrect
-    sky.Paint paint = new sky.Paint()
+    ui.Paint paint = new ui.Paint()
       ..color = trackColor
-      ..style = sky.PaintingStyle.fill;
-    sky.Rect rect = new sky.Rect.fromLTWH(offset.dx,
+      ..style = ui.PaintingStyle.fill;
+    ui.Rect rect = new ui.Rect.fromLTWH(offset.dx,
         offset.dy + _kSwitchHeight / 2.0 - _kTrackHeight / 2.0, _kTrackWidth,
         _kTrackHeight);
-    sky.RRect rrect = new sky.RRect()
+    ui.RRect rrect = new ui.RRect()
       ..setRectXY(rect, _kTrackRadius, _kTrackRadius);
     canvas.drawRRect(rrect, paint);
 

packages/flutter/lib/src/material/tabs.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:newton/newton.dart';
 import 'package:flutter/animation.dart';
@@ -312,7 +312,7 @@ class Tab extends StatelessComponent {
   Widget _buildLabelIcon() {
     assert(label.icon != null);
     Color iconColor = selected ? selectedColor : color;
-    sky.ColorFilter filter = new sky.ColorFilter.mode(iconColor, sky.TransferMode.srcATop);
+    ui.ColorFilter filter = new ui.ColorFilter.mode(iconColor, ui.TransferMode.srcATop);
     return new Icon(type: label.icon, size: _kTabIconSize, colorFilter: filter);
   }
 

packages/flutter/lib/src/painting/box_painter.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 import 'package:flutter/services.dart';
@@ -121,10 +121,10 @@ class EdgeDims {
     if (b == null)
       return a * (1.0 - t);
     return new EdgeDims.TRBL(
-      sky.lerpDouble(a.top, b.top, t),
-      sky.lerpDouble(a.right, b.right, t),
-      sky.lerpDouble(a.bottom, b.bottom, t),
-      sky.lerpDouble(a.left, b.left, t)
+      ui.lerpDouble(a.top, b.top, t),
+      ui.lerpDouble(a.right, b.right, t),
+      ui.lerpDouble(a.bottom, b.bottom, t),
+      ui.lerpDouble(a.left, b.left, t)
     );
   }
 
@@ -257,7 +257,7 @@ class BoxShadow {
     return new BoxShadow(
       color: Color.lerp(a.color, b.color, t),
       offset: Offset.lerp(a.offset, b.offset, t),
-      blur: sky.lerpDouble(a.blur, b.blur, t)
+      blur: ui.lerpDouble(a.blur, b.blur, t)
     );
   }
 
@@ -287,7 +287,7 @@ class BoxShadow {
 
 /// A 2D gradient
 abstract class Gradient {
-  sky.Shader createShader();
+  ui.Shader createShader();
 }
 
 /// A 2D linear gradient
@@ -297,7 +297,7 @@ class LinearGradient extends Gradient {
     this.end,
     this.colors,
     this.stops,
-    this.tileMode: sky.TileMode.clamp
+    this.tileMode: ui.TileMode.clamp
   }) {
     assert(colors.length == stops.length);
   }
@@ -319,10 +319,10 @@ class LinearGradient extends Gradient {
   final List<double> stops;
 
   /// How this gradient should tile the plane
-  final sky.TileMode tileMode;
+  final ui.TileMode tileMode;
 
-  sky.Shader createShader() {
-    return new sky.Gradient.linear([begin, end], this.colors,
+  ui.Shader createShader() {
+    return new ui.Gradient.linear([begin, end], this.colors,
                                    this.stops, this.tileMode);
   }
 
@@ -338,7 +338,7 @@ class RadialGradient extends Gradient {
     this.radius,
     this.colors,
     this.stops,
-    this.tileMode: sky.TileMode.clamp
+    this.tileMode: ui.TileMode.clamp
   });
 
   /// The center of the gradient
@@ -361,10 +361,10 @@ class RadialGradient extends Gradient {
   final List<double> stops;
 
   /// How this gradient should tile the plane
-  final sky.TileMode tileMode;
+  final ui.TileMode tileMode;
 
-  sky.Shader createShader() {
-    return new sky.Gradient.radial(center, radius, colors, stops, tileMode);
+  ui.Shader createShader() {
+    return new ui.Gradient.radial(center, radius, colors, stops, tileMode);
   }
 
   String toString() {
@@ -409,10 +409,10 @@ enum ImageRepeat {
 
 /// Paint an image into the given rectangle in the canvas
 void paintImage({
-  sky.Canvas canvas,
+  ui.Canvas canvas,
   Rect rect,
-  sky.Image image,
-  sky.ColorFilter colorFilter,
+  ui.Image image,
+  ui.ColorFilter colorFilter,
   fit: ImageFit.scaleDown,
   repeat: ImageRepeat.noRepeat,
   double positionX: 0.5,
@@ -476,7 +476,7 @@ class BackgroundImage {
   final ImageRepeat repeat;
 
   /// A color filter to apply to the background image before painting it
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
 
   BackgroundImage({
     ImageResource image,
@@ -485,9 +485,9 @@ class BackgroundImage {
     this.colorFilter
   }) : _imageResource = image;
 
-  sky.Image _image;
+  ui.Image _image;
   /// The image to be painted into the background
-  sky.Image get image => _image;
+  ui.Image get image => _image;
 
   ImageResource _imageResource;
 
@@ -513,7 +513,7 @@ class BackgroundImage {
       _imageResource.removeListener(_handleImageChanged);
   }
 
-  void _handleImageChanged(sky.Image resolvedImage) {
+  void _handleImageChanged(ui.Image resolvedImage) {
     if (resolvedImage == null)
       return;
     _image = resolvedImage;
@@ -582,7 +582,7 @@ class BoxDecoration {
       backgroundColor: Color.lerp(null, backgroundColor, factor),
       backgroundImage: backgroundImage,
       border: border,
-      borderRadius: sky.lerpDouble(null, borderRadius, factor),
+      borderRadius: ui.lerpDouble(null, borderRadius, factor),
       boxShadow: BoxShadow.lerpList(null, boxShadow, factor),
       gradient: gradient,
       shape: shape
@@ -604,7 +604,7 @@ class BoxDecoration {
       backgroundColor: Color.lerp(a.backgroundColor, b.backgroundColor, t),
       backgroundImage: b.backgroundImage,
       border: b.border,
-      borderRadius: sky.lerpDouble(a.borderRadius, b.borderRadius, t),
+      borderRadius: ui.lerpDouble(a.borderRadius, b.borderRadius, t),
       boxShadow: BoxShadow.lerpList(a.boxShadow, b.boxShadow, t),
       gradient: b.gradient,
       shape: b.shape
@@ -697,11 +697,11 @@ class BoxPainter {
     double shortestSide = rect.shortestSide;
     // In principle, we should use shortestSide / 2.0, but we don't want to
     // run into floating point rounding errors. Instead, we just use
-    // shortestSide and let sky.Canvas do any remaining clamping.
+    // shortestSide and let ui.Canvas do any remaining clamping.
     return _decoration.borderRadius > shortestSide ? shortestSide : _decoration.borderRadius;
   }
 
-  void _paintBackgroundColor(sky.Canvas canvas, Rect rect) {
+  void _paintBackgroundColor(ui.Canvas canvas, Rect rect) {
     if (_decoration.backgroundColor != null ||
         _decoration.boxShadow != null ||
         _decoration.gradient != null) {
@@ -717,18 +717,18 @@ class BoxPainter {
             canvas.drawRect(rect, _backgroundPaint);
           } else {
             double radius = _getEffectiveBorderRadius(rect);
-            canvas.drawRRect(new sky.RRect()..setRectXY(rect, radius, radius), _backgroundPaint);
+            canvas.drawRRect(new ui.RRect()..setRectXY(rect, radius, radius), _backgroundPaint);
           }
           break;
       }
     }
   }
 
-  void _paintBackgroundImage(sky.Canvas canvas, Rect rect) {
+  void _paintBackgroundImage(ui.Canvas canvas, Rect rect) {
     final BackgroundImage backgroundImage = _decoration.backgroundImage;
     if (backgroundImage == null)
       return;
-    sky.Image image = backgroundImage.image;
+    ui.Image image = backgroundImage.image;
     if (image == null)
       return;
     paintImage(
@@ -741,7 +741,7 @@ class BoxPainter {
     );
   }
 
-  void _paintBorder(sky.Canvas canvas, Rect rect) {
+  void _paintBorder(ui.Canvas canvas, Rect rect) {
     if (_decoration.border == null)
       return;
 
@@ -804,19 +804,19 @@ class BoxPainter {
     canvas.drawPath(path, paint);
   }
 
-  void _paintBorderWithRadius(sky.Canvas canvas, Rect rect) {
+  void _paintBorderWithRadius(ui.Canvas canvas, Rect rect) {
     assert(_hasUniformBorder);
     assert(_decoration.shape == Shape.rectangle);
     Color color = _decoration.border.top.color;
     double width = _decoration.border.top.width;
     double radius = _getEffectiveBorderRadius(rect);
 
-    sky.RRect outer = new sky.RRect()..setRectXY(rect, radius, radius);
-    sky.RRect inner = new sky.RRect()..setRectXY(rect.deflate(width), radius - width, radius - width);
+    ui.RRect outer = new ui.RRect()..setRectXY(rect, radius, radius);
+    ui.RRect inner = new ui.RRect()..setRectXY(rect.deflate(width), radius - width, radius - width);
     canvas.drawDRRect(outer, inner, new Paint()..color = color);
   }
 
-  void _paintBorderWithCircle(sky.Canvas canvas, Rect rect) {
+  void _paintBorderWithCircle(ui.Canvas canvas, Rect rect) {
     assert(_hasUniformBorder);
     assert(_decoration.shape == Shape.circle);
     assert(_decoration.borderRadius == null);
@@ -827,14 +827,14 @@ class BoxPainter {
     Paint paint = new Paint()
       ..color = _decoration.border.top.color
       ..strokeWidth = width
-      ..setStyle(sky.PaintingStyle.stroke);
+      ..setStyle(ui.PaintingStyle.stroke);
     Point center = rect.center;
     double radius = (rect.shortestSide - width) / 2.0;
     canvas.drawCircle(center, radius, paint);
   }
 
   /// Paint the box decoration into the given location on the given canvas
-  void paint(sky.Canvas canvas, Rect rect) {
+  void paint(ui.Canvas canvas, Rect rect) {
     _paintBackgroundColor(canvas, rect);
     _paintBackgroundImage(canvas, rect);
     _paintBorder(canvas, rect);

packages/flutter/lib/src/painting/shadows.dart

@@ -2,27 +2,27 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
-/// A helper class to build a [sky.DrawLooper] for drawing shadows
+/// A helper class to build a [ui.DrawLooper] for drawing shadows
 class ShadowDrawLooperBuilder {
-  var builder_ = new sky.LayerDrawLooperBuilder();
+  var builder_ = new ui.LayerDrawLooperBuilder();
 
   /// Add a shadow with the given parameters
-  void addShadow(sky.Offset offset, sky.Color color, double blur) {
+  void addShadow(ui.Offset offset, ui.Color color, double blur) {
     builder_.addLayerOnTop(
-          new sky.DrawLooperLayerInfo()
-            ..setPaintBits(sky.PaintBits.all)
+          new ui.DrawLooperLayerInfo()
+            ..setPaintBits(ui.PaintBits.all)
             ..setOffset(offset)
-            ..setColorMode(sky.TransferMode.src),
-          new sky.Paint()
+            ..setColorMode(ui.TransferMode.src),
+          new ui.Paint()
             ..color = color
-            ..maskFilter = new sky.MaskFilter.blur(sky.BlurStyle.normal, blur));
+            ..maskFilter = new ui.MaskFilter.blur(ui.BlurStyle.normal, blur));
   }
 
   /// Returns the draw looper built for the added shadows
-  sky.DrawLooper build() {
-    builder_.addLayerOnTop(new sky.DrawLooperLayerInfo(), new sky.Paint());
+  ui.DrawLooper build() {
+    builder_.addLayerOnTop(new ui.DrawLooperLayerInfo(), new ui.Paint());
     return builder_.build();
   }
 }

packages/flutter/lib/src/painting/text_painter.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'text_style.dart';
 
@@ -11,14 +11,14 @@ export 'text_style.dart';
 /// An immutable span of text
 abstract class TextSpan {
   // This class must be immutable, because we won't notice when it changes
-  sky.Node _toDOM(sky.Document owner);
+  ui.Node _toDOM(ui.Document owner);
   String toString([String prefix = '']);
 
-  void _applyStyleToContainer(sky.Element container) {
+  void _applyStyleToContainer(ui.Element container) {
   }
 
-  void build(sky.ParagraphBuilder builder);
-  sky.ParagraphStyle get paragraphStyle => null;
+  void build(ui.ParagraphBuilder builder);
+  ui.ParagraphStyle get paragraphStyle => null;
 }
 
 /// An immutable span of unstyled text
@@ -30,11 +30,11 @@ class PlainTextSpan extends TextSpan {
   /// The text contained in the span
   final String text;
 
-  sky.Node _toDOM(sky.Document owner) {
+  ui.Node _toDOM(ui.Document owner) {
     return owner.createText(text);
   }
 
-  void build(sky.ParagraphBuilder builder) {
+  void build(ui.ParagraphBuilder builder) {
     builder.addText(text);
   }
 
@@ -57,8 +57,8 @@ class StyledTextSpan extends TextSpan {
   /// The children to which the style is applied
   final List<TextSpan> children;
 
-  sky.Node _toDOM(sky.Document owner) {
-    sky.Element parent = owner.createElement('t');
+  ui.Node _toDOM(ui.Document owner) {
+    ui.Element parent = owner.createElement('t');
     style.applyToCSSStyle(parent.style);
     for (TextSpan child in children) {
       parent.appendChild(child._toDOM(owner));
@@ -66,16 +66,16 @@ class StyledTextSpan extends TextSpan {
     return parent;
   }
 
-  void build(sky.ParagraphBuilder builder) {
+  void build(ui.ParagraphBuilder builder) {
     builder.pushStyle(style.textStyle);
     for (TextSpan child in children)
       child.build(builder);
     builder.pop();
   }
 
-  sky.ParagraphStyle get paragraphStyle => style.paragraphStyle;
+  ui.ParagraphStyle get paragraphStyle => style.paragraphStyle;
 
-  void _applyStyleToContainer(sky.Element container) {
+  void _applyStyleToContainer(ui.Element container) {
     style.applyToContainerCSSStyle(container.style);
   }
 
@@ -129,10 +129,10 @@ class TextPainter {
     this.text = text;
   }
 
-  sky.Paragraph _paragraph;
+  ui.Paragraph _paragraph;
 
-  final sky.Document _document = new sky.Document();
-  final sky.LayoutRoot _layoutRoot = new sky.LayoutRoot();
+  final ui.Document _document = new ui.Document();
+  final ui.LayoutRoot _layoutRoot = new ui.LayoutRoot();
   bool _needsLayout = true;
 
   TextSpan _text;
@@ -215,7 +215,7 @@ class TextPainter {
   /// The distance from the top of the text to the first baseline of the given type
   double computeDistanceToActualBaseline(TextBaseline baseline) {
     assert(!_needsLayout);
-    sky.Element root = _layoutRoot.rootElement;
+    ui.Element root = _layoutRoot.rootElement;
     switch (baseline) {
       case TextBaseline.alphabetic: return root.alphabeticBaseline;
       case TextBaseline.ideographic: return root.ideographicBaseline;
@@ -231,7 +231,7 @@ class TextPainter {
   }
 
   /// Paint the text onto the given canvas at the given offset
-  void paint(sky.Canvas canvas, sky.Offset offset) {
+  void paint(ui.Canvas canvas, ui.Offset offset) {
     assert(!_needsLayout && "Please call layout() before paint() to position the text before painting it." is String);
     // TODO(ianh): Make LayoutRoot support a paint offset so we don't
     // need to translate for each span of text.
@@ -246,7 +246,7 @@ class _NewTextPainter implements TextPainter {
     this.text = text;
   }
 
-  sky.Paragraph _paragraph;
+  ui.Paragraph _paragraph;
   bool _needsLayout = true;
 
   TextSpan _text;
@@ -256,7 +256,7 @@ class _NewTextPainter implements TextPainter {
     if (_text == value)
       return;
     _text = value;
-    sky.ParagraphBuilder builder = new sky.ParagraphBuilder();
+    ui.ParagraphBuilder builder = new ui.ParagraphBuilder();
     _text.build(builder);
     _paragraph = builder.build(_text.paragraphStyle);
     _needsLayout = true;
@@ -346,7 +346,7 @@ class _NewTextPainter implements TextPainter {
   }
 
   /// Paint the text onto the given canvas at the given offset
-  void paint(sky.Canvas canvas, sky.Offset offset) {
+  void paint(ui.Canvas canvas, ui.Offset offset) {
     assert(!_needsLayout && "Please call layout() before paint() to position the text before painting it." is String);
     _paragraph.paint(canvas, offset);
   }

packages/flutter/lib/src/painting/text_style.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Point, Offset, Size, Rect, Color, Paint, Path, FontWeight, FontStyle, TextAlign, TextBaseline, TextDecoration, TextDecorationStyle;
 
 export 'dart:ui' show FontWeight, FontStyle, TextAlign, TextBaseline, TextDecoration, TextDecorationStyle;
@@ -152,14 +152,14 @@ class TextStyle {
     return toCSS[decorationStyle];
   }
 
-  sky.TextStyle get textStyle => null;
-  sky.ParagraphStyle get paragraphStyle => null;
+  ui.TextStyle get textStyle => null;
+  ui.ParagraphStyle get paragraphStyle => null;
 
   /// Program this text style into the engine
   ///
   /// Note: This function will likely be removed when we refactor the interface
   /// between the framework and the engine
-  void applyToCSSStyle(sky.CSSStyleDeclaration cssStyle) {
+  void applyToCSSStyle(ui.CSSStyleDeclaration cssStyle) {
     if (color != null) {
       cssStyle['color'] = _colorToCSSString(color);
     }
@@ -201,7 +201,7 @@ class TextStyle {
   ///
   /// Note: This function will likely be removed when we refactor the interface
   /// between the framework and the engine
-  void applyToContainerCSSStyle(sky.CSSStyleDeclaration cssStyle) {
+  void applyToContainerCSSStyle(ui.CSSStyleDeclaration cssStyle) {
     if (textAlign != null) {
       cssStyle['text-align'] = const {
         TextAlign.left: 'left',

packages/flutter/lib/src/rendering/binding.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/gestures.dart';
@@ -29,7 +29,7 @@ class _PointerState {
   Point lastPosition;
 }
 
-typedef void EventListener(sky.Event event);
+typedef void EventListener(ui.Event event);
 
 /// A hit test entry used by [FlutterBinding]
 class BindingHitTestEntry extends HitTestEntry {
@@ -46,9 +46,9 @@ class FlutterBinding extends HitTestTarget {
     assert(_instance == null);
     _instance = this;
 
-    sky.view.setEventCallback(_handleEvent);
+    ui.view.setEventCallback(_handleEvent);
 
-    sky.view.setMetricsChangedCallback(_handleMetricsChanged);
+    ui.view.setMetricsChangedCallback(_handleMetricsChanged);
     if (renderViewOverride == null) {
       _renderView = new RenderView(child: root);
       _renderView.attach();
@@ -72,7 +72,7 @@ class FlutterBinding extends HitTestTarget {
   RenderView _renderView;
 
   ViewConstraints _createConstraints() {
-    return new ViewConstraints(size: new Size(sky.view.width, sky.view.height));
+    return new ViewConstraints(size: new Size(ui.view.width, ui.view.height));
   }
   void _handleMetricsChanged() {
     _renderView.rootConstraints = _createConstraints();
@@ -94,8 +94,8 @@ class FlutterBinding extends HitTestTarget {
   /// Stops calling listener for every event that isn't localized to a given view coordinate
   bool removeEventListener(EventListener listener) => _eventListeners.remove(listener);
 
-  void _handleEvent(sky.Event event) {
-    if (event is sky.PointerEvent) {
+  void _handleEvent(ui.Event event) {
+    if (event is ui.PointerEvent) {
       _handlePointerEvent(event);
     } else {
       for (EventListener listener in _eventListeners)
@@ -111,7 +111,7 @@ class FlutterBinding extends HitTestTarget {
   /// to hit-test them on each movement.
   Map<int, _PointerState> _stateForPointer = new Map<int, _PointerState>();
 
-  void _handlePointerEvent(sky.PointerEvent event) {
+  void _handlePointerEvent(ui.PointerEvent event) {
     Point position = new Point(event.x, event.y);
 
     _PointerState state = _stateForPointer[event.pointer];
@@ -155,15 +155,15 @@ class FlutterBinding extends HitTestTarget {
   }
 
   /// Dispatch the given event to the path of the given hit test result
-  void dispatchEvent(sky.Event event, HitTestResult result) {
+  void dispatchEvent(ui.Event event, HitTestResult result) {
     assert(result != null);
     for (HitTestEntry entry in result.path)
       entry.target.handleEvent(event, entry);
   }
 
-  void handleEvent(sky.Event e, BindingHitTestEntry entry) {
-    if (e is sky.PointerEvent) {
-      sky.PointerEvent event = e;
+  void handleEvent(ui.Event e, BindingHitTestEntry entry) {
+    if (e is ui.PointerEvent) {
+      ui.PointerEvent event = e;
       pointerRouter.route(event);
       if (event.type == 'pointerdown')
         GestureArena.instance.close(event.pointer);

packages/flutter/lib/src/rendering/box.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 import 'package:vector_math/vector_math_64.dart';
@@ -226,10 +226,10 @@ class BoxConstraints extends Constraints {
     if (b == null)
       return a * (1.0 - t);
     return new BoxConstraints(
-      minWidth: sky.lerpDouble(a.minWidth, b.minWidth, t),
-      maxWidth: sky.lerpDouble(a.maxWidth, b.maxWidth, t),
-      minHeight: sky.lerpDouble(a.minHeight, b.minHeight, t),
-      maxHeight: sky.lerpDouble(a.maxHeight, b.maxHeight, t)
+      minWidth: ui.lerpDouble(a.minWidth, b.minWidth, t),
+      maxWidth: ui.lerpDouble(a.maxWidth, b.maxWidth, t),
+      minHeight: ui.lerpDouble(a.minHeight, b.minHeight, t),
+      maxHeight: ui.lerpDouble(a.maxHeight, b.maxHeight, t)
     );
   }
 
@@ -598,14 +598,14 @@ abstract class RenderBox extends RenderObject {
   }
   void debugPaintSize(PaintingContext context, Offset offset) {
     Paint paint = new Paint();
-    paint.setStyle(sky.PaintingStyle.stroke);
+    paint.setStyle(ui.PaintingStyle.stroke);
     paint.strokeWidth = 1.0;
     paint.color = debugPaintSizeColor;
     context.canvas.drawRect(offset & size, paint);
   }
   void debugPaintBaselines(PaintingContext context, Offset offset) {
     Paint paint = new Paint();
-    paint.setStyle(sky.PaintingStyle.stroke);
+    paint.setStyle(ui.PaintingStyle.stroke);
     paint.strokeWidth = 0.25;
     Path path;
     // ideographic baseline

packages/flutter/lib/src/rendering/debug.dart

@@ -2,31 +2,31 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 /// Causes each RenderBox to paint a box around its bounds.
 bool debugPaintSizeEnabled = false;
 
 /// The color to use when painting RenderObject bounds.
-sky.Color debugPaintSizeColor = const sky.Color(0xFF00FFFF);
+ui.Color debugPaintSizeColor = const ui.Color(0xFF00FFFF);
 
 /// Causes each RenderBox to paint a line at each of its baselines.
 bool debugPaintBaselinesEnabled = false;
 
 /// The color to use when painting alphabetic baselines.
-sky.Color debugPaintAlphabeticBaselineColor = const sky.Color(0xFF00FF00);
+ui.Color debugPaintAlphabeticBaselineColor = const ui.Color(0xFF00FF00);
 
 /// The color ot use when painting ideographic baselines.
-sky.Color debugPaintIdeographicBaselineColor = const sky.Color(0xFFFFD000);
+ui.Color debugPaintIdeographicBaselineColor = const ui.Color(0xFFFFD000);
 
 /// Causes each Layer to paint a box around its bounds.
 bool debugPaintLayerBordersEnabled = false;
 
 /// The color to use when painting Layer borders.
-sky.Color debugPaintLayerBordersColor = const sky.Color(0xFFFF9800);
+ui.Color debugPaintLayerBordersColor = const ui.Color(0xFFFF9800);
 
 /// Causes RenderObjects to paint warnings when painting outside their bounds.
 bool debugPaintBoundsEnabled = false;
 
 /// The color to use when painting RenderError boxes in checked mode.
-sky.Color debugErrorBoxColor = const sky.Color(0xFFFF0000);
+ui.Color debugErrorBoxColor = const ui.Color(0xFFFF0000);

packages/flutter/lib/src/rendering/hit_test.dart

@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 /// An object that can handle events.
 abstract class HitTestTarget {
   /// Override this function to receive events.
-  void handleEvent(sky.Event event, HitTestEntry entry);
+  void handleEvent(ui.Event event, HitTestEntry entry);
 }
 
 /// Data collected during a hit test about a specific [HitTestTarget].

packages/flutter/lib/src/rendering/image.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 
@@ -15,10 +15,10 @@ import 'object.dart';
 /// constraints and preserves the image's intrinisc aspect ratio.
 class RenderImage extends RenderBox {
   RenderImage({
-    sky.Image image,
+    ui.Image image,
     double width,
     double height,
-    sky.ColorFilter colorFilter,
+    ui.ColorFilter colorFilter,
     fit: ImageFit.scaleDown,
     repeat: ImageRepeat.noRepeat
   }) : _image = image,
@@ -28,10 +28,10 @@ class RenderImage extends RenderBox {
       _fit = fit,
       _repeat = repeat;
 
-  sky.Image _image;
+  ui.Image _image;
   /// The image to display
-  sky.Image get image => _image;
-  void set image (sky.Image value) {
+  ui.Image get image => _image;
+  void set image (ui.Image value) {
     if (value == _image)
       return;
     _image = value;
@@ -60,10 +60,10 @@ class RenderImage extends RenderBox {
     markNeedsLayout();
   }
 
-  sky.ColorFilter _colorFilter;
+  ui.ColorFilter _colorFilter;
   /// If non-null, apply this color filter to the image before painint.
-  sky.ColorFilter get colorFilter => _colorFilter;
-  void set colorFilter (sky.ColorFilter value) {
+  ui.ColorFilter get colorFilter => _colorFilter;
+  void set colorFilter (ui.ColorFilter value) {
     if (value == _colorFilter)
       return;
     _colorFilter = value;

packages/flutter/lib/src/rendering/layer.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 import 'package:vector_math/vector_math_64.dart';
@@ -62,7 +62,7 @@ abstract class Layer {
   ///
   /// The layerOffset is the accumulated offset of this layer's parent from the
   /// origin of the builder's coordinate system.
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset);
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset);
 }
 
 /// A composited layer containing a [Picture]
@@ -79,9 +79,9 @@ class PictureLayer extends Layer {
   /// The picture recorded for this layer
   ///
   /// The picture's coodinate system matches this layer's coodinate system
-  sky.Picture picture;
+  ui.Picture picture;
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.addPicture(offset + layerOffset, picture, paintBounds);
   }
 
@@ -105,7 +105,7 @@ class StatisticsLayer extends Layer {
 
   final int rasterizerThreshold;
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     assert(optionsMask != null);
     builder.addStatistics(optionsMask, paintBounds.shift(layerOffset));
     builder.setRasterizerTracingThreshold(rasterizerThreshold);
@@ -194,12 +194,12 @@ class ContainerLayer extends Layer {
     _lastChild = null;
   }
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     addChildrenToScene(builder, offset + layerOffset);
   }
 
   /// Uploads all of this layer's children to the engine
-  void addChildrenToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addChildrenToScene(ui.SceneBuilder builder, Offset layerOffset) {
     Layer child = _firstChild;
     while (child != null) {
       child.addToScene(builder, layerOffset);
@@ -218,7 +218,7 @@ class ClipRectLayer extends ContainerLayer {
   // TODO(abarth): Why is the rectangle in the parent's coordinate system
   // instead of in the coordinate system of this layer?
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.pushClipRect(clipRect.shift(layerOffset));
     addChildrenToScene(builder, offset + layerOffset);
     builder.pop();
@@ -235,11 +235,11 @@ class ClipRRectLayer extends ContainerLayer {
   // TODO(abarth): Remove.
 
   /// The rounded-rect to clip in the parent's coordinate system
-  sky.RRect clipRRect;
+  ui.RRect clipRRect;
   // TODO(abarth): Why is the rounded-rect in the parent's coordinate system
   // instead of in the coordinate system of this layer?
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.pushClipRRect(clipRRect.shift(layerOffset), bounds.shift(layerOffset));
     addChildrenToScene(builder, offset + layerOffset);
     builder.pop();
@@ -260,7 +260,7 @@ class ClipPathLayer extends ContainerLayer {
   // TODO(abarth): Why is the path in the parent's coordinate system instead of
   // in the coordinate system of this layer?
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.pushClipPath(clipPath.shift(layerOffset), bounds.shift(layerOffset));
     addChildrenToScene(builder, offset + layerOffset);
     builder.pop();
@@ -275,7 +275,7 @@ class TransformLayer extends ContainerLayer {
   /// The matrix to apply
   Matrix4 transform;
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     Matrix4 offsetTransform = new Matrix4.identity();
     offsetTransform.translate(offset.dx + layerOffset.dx, offset.dy + layerOffset.dy);
     builder.pushTransform((offsetTransform * transform).storage);
@@ -298,7 +298,7 @@ class OpacityLayer extends ContainerLayer {
   /// transparent and 255 is fully opaque.
   int alpha;
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.pushOpacity(alpha, bounds?.shift(layerOffset));
     addChildrenToScene(builder, offset + layerOffset);
     builder.pop();
@@ -322,9 +322,9 @@ class ColorFilterLayer extends ContainerLayer {
   Color color;
 
   /// The transfer mode to use to combine [color] with the children's painting
-  sky.TransferMode transferMode;
+  ui.TransferMode transferMode;
 
-  void addToScene(sky.SceneBuilder builder, Offset layerOffset) {
+  void addToScene(ui.SceneBuilder builder, Offset layerOffset) {
     builder.pushColorFilter(color, transferMode, bounds.shift(offset));
     addChildrenToScene(builder, offset + layerOffset);
     builder.pop();

packages/flutter/lib/src/rendering/object.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 import 'package:flutter/animation.dart';
@@ -17,7 +17,7 @@ import 'node.dart';
 export 'dart:ui' show Point, Offset, Size, Rect, Color, Paint, Path;
 export 'hit_test.dart' show HitTestTarget, HitTestEntry, HitTestResult;
 
-typedef sky.Shader ShaderCallback(Rect bounds);
+typedef ui.Shader ShaderCallback(Rect bounds);
 
 /// Base class for data associated with a [RenderObject] by its parent
 ///
@@ -38,9 +38,9 @@ class ParentData {
 }
 
 /// Obsolete class that will be removed eventually
-class PaintingCanvas extends sky.Canvas {
-  PaintingCanvas(sky.PictureRecorder recorder, Rect bounds) : super(recorder, bounds);
-  // TODO(ianh): Just use sky.Canvas everywhere instead
+class PaintingCanvas extends ui.Canvas {
+  PaintingCanvas(ui.PictureRecorder recorder, Rect bounds) : super(recorder, bounds);
+  // TODO(ianh): Just use ui.Canvas everywhere instead
 }
 
 /// A place to paint
@@ -76,7 +76,7 @@ class PaintingContext {
   ContainerLayer get containerLayer => _containerLayer;
 
   PictureLayer _currentLayer;
-  sky.PictureRecorder _recorder;
+  ui.PictureRecorder _recorder;
   PaintingCanvas _canvas;
   /// The canvas on which to paint
   ///
@@ -90,7 +90,7 @@ class PaintingContext {
     assert(_recorder == null);
     assert(_canvas == null);
     _currentLayer = new PictureLayer(paintBounds: paintBounds);
-    _recorder = new sky.PictureRecorder();
+    _recorder = new ui.PictureRecorder();
     _canvas = new PaintingCanvas(_recorder, paintBounds);
     _containerLayer.append(_currentLayer);
   }
@@ -186,7 +186,7 @@ class PaintingContext {
   /// compositing layer. Otherwise, the clip will be applied by the canvas.
   ///
   /// Note: clipRRect is in the parent's coordinate space
-  void paintChildWithClipRRect(RenderObject child, Point childPosition, Rect bounds, sky.RRect clipRRect) {
+  void paintChildWithClipRRect(RenderObject child, Point childPosition, Rect bounds, ui.RRect clipRRect) {
     assert(debugCanPaintChild(child));
     final Offset childOffset = childPosition.toOffset();
     if (!child.needsCompositing) {
@@ -246,7 +246,7 @@ class PaintingContext {
   static Paint _getPaintForAlpha(int alpha) {
     return new Paint()
       ..color = new Color.fromARGB(alpha, 0, 0, 0)
-      ..setTransferMode(sky.TransferMode.srcOver)
+      ..setTransferMode(ui.TransferMode.srcOver)
       ..isAntiAlias = false;
   }
 
@@ -276,9 +276,9 @@ class PaintingContext {
     }
   }
 
-  static Paint _getPaintForColorFilter(Color color, sky.TransferMode transferMode) {
+  static Paint _getPaintForColorFilter(Color color, ui.TransferMode transferMode) {
     return new Paint()
-      ..colorFilter = new sky.ColorFilter.mode(color, transferMode)
+      ..colorFilter = new ui.ColorFilter.mode(color, transferMode)
       ..isAntiAlias = false;
   }
 
@@ -294,7 +294,7 @@ class PaintingContext {
                                  Point childPosition,
                                  Rect bounds,
                                  Color color,
-                                 sky.TransferMode transferMode) {
+                                 ui.TransferMode transferMode) {
     assert(debugCanPaintChild(child));
     final Offset childOffset = childPosition.toOffset();
     if (!child.needsCompositing) {
@@ -315,7 +315,7 @@ class PaintingContext {
 
   static Paint _getPaintForShaderMask(Rect bounds,
                                       ShaderCallback shaderCallback,
-                                      sky.TransferMode transferMode) {
+                                      ui.TransferMode transferMode) {
     return new Paint()
      ..transferMode = transferMode
      ..shader = shaderCallback(bounds);
@@ -325,7 +325,7 @@ class PaintingContext {
                                 Point childPosition,
                                 Rect bounds,
                                 ShaderCallback shaderCallback,
-                                sky.TransferMode transferMode) {
+                                ui.TransferMode transferMode) {
     assert(debugCanPaintChild(child));
     final Offset childOffset = childPosition.toOffset();
     if (!child.needsCompositing) {
@@ -628,7 +628,7 @@ abstract class RenderObject extends AbstractNode implements HitTestTarget {
   ///
   /// See [FlutterBinding] for an example of how this function is used.
   static void flushLayout() {
-    sky.tracing.begin('RenderObject.flushLayout');
+    ui.tracing.begin('RenderObject.flushLayout');
     _debugDoingLayout = true;
     try {
       // TODO(ianh): assert that we're not allowing previously dirty nodes to redirty themeselves
@@ -642,7 +642,7 @@ abstract class RenderObject extends AbstractNode implements HitTestTarget {
       }
     } finally {
       _debugDoingLayout = false;
-      sky.tracing.end('RenderObject.flushLayout');
+      ui.tracing.end('RenderObject.flushLayout');
     }
   }
   void _layoutWithoutResize() {
@@ -949,7 +949,7 @@ abstract class RenderObject extends AbstractNode implements HitTestTarget {
   ///
   /// See [FlutterBinding] for an example of how this function is used.
   static void flushPaint() {
-    sky.tracing.begin('RenderObject.flushPaint');
+    ui.tracing.begin('RenderObject.flushPaint');
     _debugDoingPaint = true;
     try {
       List<RenderObject> dirtyNodes = _nodesNeedingPaint;
@@ -963,7 +963,7 @@ abstract class RenderObject extends AbstractNode implements HitTestTarget {
       assert(_nodesNeedingPaint.length == 0);
     } finally {
       _debugDoingPaint = false;
-      sky.tracing.end('RenderObject.flushPaint');
+      ui.tracing.end('RenderObject.flushPaint');
     }
   }
 
@@ -1069,7 +1069,7 @@ abstract class RenderObject extends AbstractNode implements HitTestTarget {
   // EVENTS
 
   /// Override this function to handle events that hit this render object
-  void handleEvent(sky.Event event, HitTestEntry entry) {
+  void handleEvent(ui.Event event, HitTestEntry entry) {
   }
 
 

packages/flutter/lib/src/rendering/proxy_box.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 import 'package:vector_math/vector_math_64.dart';
@@ -627,7 +627,7 @@ class RenderOpacity extends RenderProxyBox {
 /// Note: This class is relatively expensive because it requires painting the
 /// child into an intermediate buffer.
 class RenderColorFilter extends RenderProxyBox {
-  RenderColorFilter({ RenderBox child, Color color, sky.TransferMode transferMode })
+  RenderColorFilter({ RenderBox child, Color color, ui.TransferMode transferMode })
     : _color = color, _transferMode = transferMode, super(child) {
   }
 
@@ -643,9 +643,9 @@ class RenderColorFilter extends RenderProxyBox {
   }
 
   /// The transfer mode to use when combining the child's painting and the [color]
-  sky.TransferMode get transferMode => _transferMode;
-  sky.TransferMode _transferMode;
-  void set transferMode (sky.TransferMode newTransferMode) {
+  ui.TransferMode get transferMode => _transferMode;
+  ui.TransferMode _transferMode;
+  void set transferMode (ui.TransferMode newTransferMode) {
     assert(newTransferMode != null);
     if (_transferMode == newTransferMode)
       return;
@@ -660,7 +660,7 @@ class RenderColorFilter extends RenderProxyBox {
 }
 
 class RenderShaderMask extends RenderProxyBox {
-  RenderShaderMask({ RenderBox child, ShaderCallback shaderCallback, sky.TransferMode transferMode })
+  RenderShaderMask({ RenderBox child, ShaderCallback shaderCallback, ui.TransferMode transferMode })
     : _shaderCallback = shaderCallback, _transferMode = transferMode, super(child) {
   }
 
@@ -674,9 +674,9 @@ class RenderShaderMask extends RenderProxyBox {
     markNeedsPaint();
   }
 
-  sky.TransferMode get transferMode => _transferMode;
-  sky.TransferMode _transferMode;
-  void set transferMode (sky.TransferMode newTransferMode) {
+  ui.TransferMode get transferMode => _transferMode;
+  ui.TransferMode _transferMode;
+  void set transferMode (ui.TransferMode newTransferMode) {
     assert(newTransferMode != null);
     if (_transferMode == newTransferMode)
       return;
@@ -745,7 +745,7 @@ class RenderClipRRect extends RenderProxyBox {
   void paint(PaintingContext context, Offset offset) {
     if (child != null) {
       Rect rect = offset & size;
-      sky.RRect rrect = new sky.RRect()..setRectXY(rect, xRadius, yRadius);
+      ui.RRect rrect = new ui.RRect()..setRectXY(rect, xRadius, yRadius);
       context.paintChildWithClipRRect(child, offset.toPoint(), rect, rrect);
     }
   }
@@ -1056,7 +1056,7 @@ class RenderCustomPaint extends RenderProxyBox {
   }
 }
 
-typedef void PointerEventListener(sky.PointerEvent e);
+typedef void PointerEventListener(ui.PointerEvent e);
 
 /// Invokes the callbacks in response to pointer events.
 class RenderPointerListener extends RenderProxyBox {
@@ -1073,7 +1073,7 @@ class RenderPointerListener extends RenderProxyBox {
   PointerEventListener onPointerUp;
   PointerEventListener onPointerCancel;
 
-  void handleEvent(sky.Event event, HitTestEntry entry) {
+  void handleEvent(ui.Event event, HitTestEntry entry) {
     if (onPointerDown != null && event.type == 'pointerdown')
       return onPointerDown(event);
     if (onPointerMove != null && event.type == 'pointermove')

packages/flutter/lib/src/rendering/toggleable.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/gestures.dart';
@@ -37,7 +37,7 @@ abstract class RenderToggleable extends RenderConstrainedBox {
 
   double get position => _performance.value;
 
-  void handleEvent(sky.Event event, BoxHitTestEntry entry) {
+  void handleEvent(ui.Event event, BoxHitTestEntry entry) {
     if (event.type == 'pointerdown')
       _tap.addPointer(event);
   }

packages/flutter/lib/src/rendering/view.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:vector_math/vector_math_64.dart';
@@ -60,7 +60,7 @@ class RenderView extends RenderObject with RenderObjectWithChildMixin<RenderBox>
   }
 
   Matrix4 get _logicalToDeviceTransform {
-    double devicePixelRatio = sky.view.devicePixelRatio;
+    double devicePixelRatio = ui.view.devicePixelRatio;
     return new Matrix4.diagonal3Values(devicePixelRatio, devicePixelRatio, 1.0);
   }
 
@@ -114,15 +114,15 @@ class RenderView extends RenderObject with RenderObjectWithChildMixin<RenderBox>
   ///
   /// Actually causes the output of the rendering pipeline to appear on screen.
   void compositeFrame() {
-    sky.tracing.begin('RenderView.compositeFrame');
+    ui.tracing.begin('RenderView.compositeFrame');
     try {
       (layer as TransformLayer).transform = _logicalToDeviceTransform;
-      Rect bounds = Point.origin & (size * sky.view.devicePixelRatio);
-      sky.SceneBuilder builder = new sky.SceneBuilder(bounds);
+      Rect bounds = Point.origin & (size * ui.view.devicePixelRatio);
+      ui.SceneBuilder builder = new ui.SceneBuilder(bounds);
       layer.addToScene(builder, Offset.zero);
-      sky.view.scene = builder.build();
+      ui.view.scene = builder.build();
     } finally {
-      sky.tracing.end('RenderView.compositeFrame');
+      ui.tracing.end('RenderView.compositeFrame');
     }
   }
 

packages/flutter/lib/src/rendering/viewport.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:vector_math/vector_math_64.dart';
 
@@ -136,7 +136,7 @@ class RenderViewport extends RenderBox with RenderObjectWithChildMixin<RenderBox
   }
 
   Offset get _scrollOffsetRoundedToIntegerDevicePixels {
-    double devicePixelRatio = sky.view.devicePixelRatio;
+    double devicePixelRatio = ui.view.devicePixelRatio;
     int dxInDevicePixels = (scrollOffset.dx * devicePixelRatio).round();
     int dyInDevicePixels = (scrollOffset.dy * devicePixelRatio).round();
     return new Offset(dxInDevicePixels / devicePixelRatio,

packages/flutter/lib/src/services/asset_bundle.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui_internals' as internals;
 import 'dart:typed_data';
 
@@ -68,7 +68,7 @@ class MojoAssetBundle extends AssetBundle {
     _imageCache = null;
   }
 
-  Future<sky.Image> _fetchImage(String key) async {
+  Future<ui.Image> _fetchImage(String key) async {
     return await decodeImageFromDataPipe(await load(key));
   }
 

packages/flutter/lib/src/services/image_cache.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 import 'dart:collection';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:mojo/mojo/url_response.mojom.dart';
 
@@ -12,7 +12,7 @@ import 'fetch.dart';
 import 'image_decoder.dart';
 import 'image_resource.dart';
 
-Future<sky.Image> _fetchImage(String url) async {
+Future<ui.Image> _fetchImage(String url) async {
   UrlResponse response = await fetchUrl(url);
   if (response.statusCode >= 400) {
     print("Failed (${response.statusCode}) to load image ${url}");

packages/flutter/lib/src/services/image_resource.dart

@@ -3,14 +3,14 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 /// A callback for when the image is available.
-typedef void ImageListener(sky.Image image);
+typedef void ImageListener(ui.Image image);
 
 /// A handle to an image resource
 ///
-/// ImageResource represents a handle to a [sky.Image] object. The underlying
+/// ImageResource represents a handle to a [ui.Image] object. The underlying
 /// image object might change over time, either because the image is animating
 /// or because the underlying image resource was mutated.
 class ImageResource {
@@ -19,17 +19,17 @@ class ImageResource {
   }
 
   bool _resolved = false;
-  Future<sky.Image> _futureImage;
-  sky.Image _image;
+  Future<ui.Image> _futureImage;
+  ui.Image _image;
   final List<ImageListener> _listeners = new List<ImageListener>();
 
-  /// The first concrete [sky.Image] object represented by this handle.
+  /// The first concrete [ui.Image] object represented by this handle.
   ///
   /// Instead of receivingly only the first image, most clients will want to
   /// [addListener] to be notified whenever a a concrete image is available.
-  Future<sky.Image> get first => _futureImage;
+  Future<ui.Image> get first => _futureImage;
 
-  /// Adds a listener callback that is called whenever a concrete [sky.Image]
+  /// Adds a listener callback that is called whenever a concrete [ui.Image]
   /// object is available. Note: If a concrete image is available currently,
   /// this object will call the listener synchronously.
   void addListener(ImageListener listener) {
@@ -38,12 +38,12 @@ class ImageResource {
       listener(_image);
   }
 
-  /// Stop listening for new concrete [sky.Image] objects.
+  /// Stop listening for new concrete [ui.Image] objects.
   void removeListener(ImageListener listener) {
     _listeners.remove(listener);
   }
 
-  void _handleImageLoaded(sky.Image image) {
+  void _handleImageLoaded(ui.Image image) {
     _image = image;
     _resolved = true;
     _notifyListeners();

packages/flutter/lib/src/widgets/basic.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
@@ -61,7 +61,7 @@ class ColorFilter extends OneChildRenderObjectWidget {
   }
 
   final Color color;
-  final sky.TransferMode transferMode;
+  final ui.TransferMode transferMode;
 
   RenderColorFilter createRenderObject() => new RenderColorFilter(color: color, transferMode: transferMode);
 
@@ -75,7 +75,7 @@ class ShaderMask extends OneChildRenderObjectWidget {
   ShaderMask({
     Key key,
     this.shaderCallback,
-    this.transferMode: sky.TransferMode.modulate,
+    this.transferMode: ui.TransferMode.modulate,
     Widget child
   }) : super(key: key, child: child) {
     assert(shaderCallback != null);
@@ -83,7 +83,7 @@ class ShaderMask extends OneChildRenderObjectWidget {
   }
 
   final ShaderCallback shaderCallback;
-  final sky.TransferMode transferMode;
+  final ui.TransferMode transferMode;
 
   RenderShaderMask createRenderObject() {
     return new RenderShaderMask(
@@ -813,10 +813,10 @@ class Image extends LeafRenderObjectWidget {
     this.repeat: ImageRepeat.noRepeat
   }) : super(key: key);
 
-  final sky.Image image;
+  final ui.Image image;
   final double width;
   final double height;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
   final ImageFit fit;
   final ImageRepeat repeat;
 
@@ -854,7 +854,7 @@ class ImageListener extends StatefulComponent {
   final ImageResource image;
   final double width;
   final double height;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
   final ImageFit fit;
   final ImageRepeat repeat;
 
@@ -867,9 +867,9 @@ class _ImageListenerState extends State<ImageListener> {
     config.image.addListener(_handleImageChanged);
   }
 
-  sky.Image _resolvedImage;
+  ui.Image _resolvedImage;
 
-  void _handleImageChanged(sky.Image resolvedImage) {
+  void _handleImageChanged(ui.Image resolvedImage) {
     setState(() {
       _resolvedImage = resolvedImage;
     });
@@ -913,7 +913,7 @@ class NetworkImage extends StatelessComponent {
   final String src;
   final double width;
   final double height;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
   final ImageFit fit;
   final ImageRepeat repeat;
 
@@ -945,7 +945,7 @@ class AssetImage extends StatelessComponent {
   final AssetBundle bundle;
   final double width;
   final double height;
-  final sky.ColorFilter colorFilter;
+  final ui.ColorFilter colorFilter;
   final ImageFit fit;
   final ImageRepeat repeat;
 

packages/flutter/lib/src/widgets/dismissable.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 
@@ -164,7 +164,7 @@ class _DismissableState extends State<Dismissable> {
       _fadePerformance.progress = _dragExtent.abs() / (_size.width * _kDismissCardThreshold);
   }
 
-  bool _isFlingGesture(sky.Offset velocity) {
+  bool _isFlingGesture(ui.Offset velocity) {
     double vx = velocity.dx;
     double vy = velocity.dy;
     if (_directionIsYAxis) {
@@ -193,7 +193,7 @@ class _DismissableState extends State<Dismissable> {
     return false;
   }
 
-  void _handleDragEnd(sky.Offset velocity) {
+  void _handleDragEnd(ui.Offset velocity) {
     if (!_isActive || _fadePerformance.isAnimating)
       return;
 

packages/flutter/lib/src/widgets/drag_target.dart

@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:collection';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/rendering.dart';
@@ -69,7 +69,7 @@ class Draggable extends StatefulComponent {
 class _DraggableState extends State<Draggable> {
   DragRoute _route;
 
-  void _startDrag(sky.PointerEvent event) {
+  void _startDrag(ui.PointerEvent event) {
     if (_route != null)
       return; // TODO(ianh): once we switch to using gestures, just hand the gesture to the route so it can do everything itself. then we can have multiple drags at the same time.
     final Point point = new Point(event.x, event.y);
@@ -97,7 +97,7 @@ class _DraggableState extends State<Draggable> {
     config.navigator.push(_route);
   }
 
-  void _updateDrag(sky.PointerEvent event) {
+  void _updateDrag(ui.PointerEvent event) {
     if (_route != null) {
       config.navigator.setState(() {
         _route.update(new Point(event.x, event.y));
@@ -105,14 +105,14 @@ class _DraggableState extends State<Draggable> {
     }
   }
 
-  void _cancelDrag(sky.PointerEvent event) {
+  void _cancelDrag(ui.PointerEvent event) {
     if (_route != null) {
       config.navigator.popRoute(_route, DragEndKind.canceled);
       assert(_route == null);
     }
   }
 
-  void _drop(sky.PointerEvent event) {
+  void _drop(ui.PointerEvent event) {
     if (_route != null) {
       _route.update(new Point(event.x, event.y));
       config.navigator.popRoute(_route, DragEndKind.dropped);

packages/flutter/lib/src/widgets/gesture_detector.dart

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:flutter/rendering.dart';
@@ -187,7 +187,7 @@ class _GestureDetectorState extends State<GestureDetector> {
     return null;
   }
 
-  void _handlePointerDown(sky.PointerEvent event) {
+  void _handlePointerDown(ui.PointerEvent event) {
     if (_tap != null)
       _tap.addPointer(event);
     if (_showPress != null)

packages/flutter/lib/src/widgets/scrollable.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 import 'dart:math' as math;
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:newton/newton.dart';
 import 'package:flutter/animation.dart';
@@ -200,7 +200,7 @@ abstract class ScrollableState<T extends Scrollable> extends State<T> {
     return _startToEndAnimation();
   }
 
-  double _scrollVelocity(sky.Offset velocity) {
+  double _scrollVelocity(ui.Offset velocity) {
     double scrollVelocity = config.scrollDirection == ScrollDirection.horizontal
       ? -velocity.dx
       : -velocity.dy;
@@ -616,7 +616,7 @@ class PageableListState<T> extends ScrollableListState<T, PageableList<T>> {
       .clamp(scrollBehavior.minScrollOffset, scrollBehavior.maxScrollOffset);
   }
 
-  Future fling(sky.Offset velocity) {
+  Future fling(ui.Offset velocity) {
     double scrollVelocity = _scrollVelocity(velocity);
     double newScrollOffset = _snapScrollOffset(scrollOffset + scrollVelocity.sign * config.itemExtent)
       .clamp(_snapScrollOffset(scrollOffset - config.itemExtent / 2.0),

packages/flutter_sprites/lib/effect_line.dart

@@ -15,7 +15,7 @@ class EffectLine extends Node {
 
   EffectLine({
     this.texture: null,
-    this.transferMode: sky.TransferMode.dstOver,
+    this.transferMode: ui.TransferMode.dstOver,
     List<Point> points,
     this.widthMode : EffectLineWidthMode.linear,
     this.minWidth: 10.0,
@@ -47,7 +47,7 @@ class EffectLine extends Node {
 
   final Texture texture;
 
-  final sky.TransferMode transferMode;
+  final ui.TransferMode transferMode;
 
   final EffectLineWidthMode widthMode;
   final double minWidth;

packages/flutter_sprites/lib/image_map.dart

@@ -8,18 +8,18 @@ class ImageMap {
   ImageMap(AssetBundle bundle) : _bundle = bundle;
 
   final AssetBundle _bundle;
-  final Map<String, sky.Image> _images = new Map<String, sky.Image>();
+  final Map<String, ui.Image> _images = new Map<String, ui.Image>();
 
-  Future<List<sky.Image>> load(List<String> urls) {
+  Future<List<ui.Image>> load(List<String> urls) {
     return Future.wait(urls.map(_loadImage));
   }
 
-  Future<sky.Image> _loadImage(String url) async {
-    sky.Image image = await _bundle.loadImage(url).first;
+  Future<ui.Image> _loadImage(String url) async {
+    ui.Image image = await _bundle.loadImage(url).first;
     _images[url] = image;
     return image;
   }
 
-  sky.Image getImage(String url) => _images[url];
-  sky.Image operator [](String url) => _images[url];
+  ui.Image getImage(String url) => _images[url];
+  ui.Image operator [](String url) => _images[url];
 }

packages/flutter_sprites/lib/layer.dart

@@ -22,7 +22,7 @@ class Layer extends Node with SpritePaint {
   Layer([Rect this.layerRect = null]);
 
   Paint _cachedPaint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
   void _prePaint(PaintingCanvas canvas, Matrix4 matrix) {

packages/flutter_sprites/lib/particle_system.dart

@@ -144,7 +144,7 @@ class ParticleSystem extends Node {
 
   /// The transfer mode used to draw the particle system. Default is
   /// [TransferMode.plus].
-  sky.TransferMode transferMode;
+  ui.TransferMode transferMode;
 
   List<_Particle> _particles;
 
@@ -152,7 +152,7 @@ class ParticleSystem extends Node {
   int _numEmittedParticles = 0;
 
   static Paint _paint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
   ParticleSystem(this.texture,
@@ -184,7 +184,7 @@ class ParticleSystem extends Node {
                   this.redVar: 0,
                   this.greenVar: 0,
                   this.blueVar: 0,
-                  this.transferMode: sky.TransferMode.plus,
+                  this.transferMode: ui.TransferMode.plus,
                   this.numParticlesToEmit: 0,
                   this.autoRemoveOnFinish: true}) {
     _particles = new List<_Particle>();
@@ -359,7 +359,7 @@ class ParticleSystem extends Node {
 
   void paint(PaintingCanvas canvas) {
 
-    List<sky.RSTransform> transforms = [];
+    List<ui.RSTransform> transforms = [];
     List<Rect> rects = [];
     List<Color> colors = [];
 
@@ -388,7 +388,7 @@ class ParticleSystem extends Node {
       double ay = rect.height / 2;
       double tx = particle.pos[0] + -scos * ax + ssin * ay;
       double ty = particle.pos[1] + -ssin * ax - scos * ay;
-      sky.RSTransform transform = new sky.RSTransform(scos, ssin, tx, ty);
+      ui.RSTransform transform = new ui.RSTransform(scos, ssin, tx, ty);
       transforms.add(transform);
 
       // Color
@@ -411,7 +411,7 @@ class ParticleSystem extends Node {
     }
 
     canvas.drawAtlas(texture.image, transforms, rects, colors,
-      sky.TransferMode.modulate, null, _paint);
+      ui.TransferMode.modulate, null, _paint);
   }
 }
 

packages/flutter_sprites/lib/physics_node.dart

@@ -137,7 +137,7 @@ class PhysicsNode extends Node {
 
   void paintDebug(PaintingCanvas canvas) {
     Paint shapePaint = new Paint();
-    shapePaint.setStyle(sky.PaintingStyle.stroke);
+    shapePaint.setStyle(ui.PaintingStyle.stroke);
     shapePaint.strokeWidth = 1.0;
 
     for (box2d.Body body = b2World.bodyList; body != null; body = body.getNext()) {

packages/flutter_sprites/lib/skysprites.dart

@@ -8,7 +8,7 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:math' as math;
 import 'dart:typed_data';
-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:box2d/box2d.dart' as box2d;
 import 'package:mojo/core.dart';

packages/flutter_sprites/lib/sprite.dart

@@ -17,7 +17,7 @@ class Sprite extends NodeWithSize with SpritePaint {
   bool constrainProportions = false;
 
   Paint _cachedPaint = new Paint()
-    ..filterQuality = sky.FilterQuality.low
+    ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
   /// Creates a new sprite from the provided [texture].
@@ -35,7 +35,7 @@ class Sprite extends NodeWithSize with SpritePaint {
   /// Creates a new sprite from the provided [image].
   ///
   /// var mySprite = new Sprite.fromImage(myImage);
-  Sprite.fromImage(sky.Image image) : super(Size.zero) {
+  Sprite.fromImage(ui.Image image) : super(Size.zero) {
     assert(image != null);
 
     texture = new Texture(image);
@@ -107,13 +107,13 @@ abstract class SpritePaint {
   ///
   ///     // Add the colors of the sprite with the colors of the background
   ///     mySprite.transferMode = TransferMode.plusMode;
-  sky.TransferMode transferMode;
+  ui.TransferMode transferMode;
 
   void _updatePaint(Paint paint) {
     paint.color = new Color.fromARGB((255.0*_opacity).toInt(), 255, 255, 255);
 
     if (colorOverlay != null) {
-      paint.colorFilter = new sky.ColorFilter.mode(colorOverlay, sky.TransferMode.srcATop);
+      paint.colorFilter = new ui.ColorFilter.mode(colorOverlay, ui.TransferMode.srcATop);
     }
 
     if (transferMode != null) {

packages/flutter_sprites/lib/sprite_box.dart

@@ -185,11 +185,11 @@ class SpriteBox extends RenderBox {
     }
   }
 
-  void handleEvent(sky.Event event, _SpriteBoxHitTestEntry entry) {
+  void handleEvent(ui.Event event, _SpriteBoxHitTestEntry entry) {
     if (!attached)
       return;
 
-    if (event is sky.PointerEvent) {
+    if (event is ui.PointerEvent) {
 
       if (event.type == 'pointerdown') {
         // Build list of event targets

packages/flutter_sprites/lib/spritesheet.dart

@@ -8,7 +8,7 @@ part of skysprites;
 /// the sprite sheet definition are used to reference the different textures.
 class SpriteSheet {
 
-  sky.Image _image;
+  ui.Image _image;
   Map<String, Texture> _textures = new Map();
 
   /// Creates a new sprite sheet from an [_image] and a sprite sheet [jsonDefinition].
@@ -65,7 +65,7 @@ class SpriteSheet {
   /// The image used by the sprite sheet.
   ///
   ///     var spriteSheetImage = mySpriteSheet.image;
-  sky.Image get image => _image;
+  ui.Image get image => _image;
 
   /// Returns a texture by its name.
   ///

packages/flutter_sprites/lib/texture.dart

@@ -7,7 +7,7 @@ class Texture {
   /// The image that this texture is a part of.
   ///
   ///     var textureImage = myTexture.image;
-  final sky.Image image;
+  final ui.Image image;
 
   /// The logical size of the texture, before being trimmed by the texture packer.
   ///
@@ -51,7 +51,7 @@ class Texture {
   /// Creates a new texture from an [Image] object.
   ///
   ///     var myTexture = new Texture(myImage);
-  Texture(sky.Image image) :
+  Texture(ui.Image image) :
     size = new Size(image.width.toDouble(), image.height.toDouble()),
     image = image,
     trimmed = false,

packages/flutter_sprites/lib/textured_line.dart

@@ -38,8 +38,8 @@ class TexturedLinePainter {
       _cachedPaint = new Paint();
     } else {
       Matrix4 matrix = new Matrix4.identity();
-      sky.ImageShader shader = new sky.ImageShader(texture.image,
-        sky.TileMode.repeated, sky.TileMode.repeated, matrix.storage);
+      ui.ImageShader shader = new ui.ImageShader(texture.image,
+        ui.TileMode.repeated, ui.TileMode.repeated, matrix.storage);
 
       _cachedPaint = new Paint();
       _cachedPaint.setShader(shader);
@@ -77,7 +77,7 @@ class TexturedLinePainter {
 
   bool removeArtifacts = true;
 
-  sky.TransferMode transferMode = sky.TransferMode.srcOver;
+  ui.TransferMode transferMode = ui.TransferMode.srcOver;
 
   Paint _cachedPaint = new Paint();
 
@@ -169,7 +169,7 @@ class TexturedLinePainter {
       lastMiter = currentMiter;
     }
 
-    canvas.drawVertices(sky.VertexMode.triangles, vertices, textureCoordinates, verticeColors, sky.TransferMode.modulate, indicies, _cachedPaint);
+    canvas.drawVertices(ui.VertexMode.triangles, vertices, textureCoordinates, verticeColors, ui.TransferMode.modulate, indicies, _cachedPaint);
   }
 
   double _xPosForStop(double stop) {

packages/flutter_sprites/lib/virtual_joystick.dart

@@ -14,7 +14,7 @@ class VirtualJoystick extends NodeWithSize {
     _paintControl = new Paint()
       ..color=new Color(0xffffffff)
       ..strokeWidth = 1.0
-      ..setStyle(sky.PaintingStyle.stroke);
+      ..setStyle(ui.PaintingStyle.stroke);
   }
 
   Point _value = Point.origin;

packages/unit/test/engine/canvas_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 import 'dart:ui' show Rect, Color, Paint;
 
 import 'package:test/test.dart';
@@ -6,8 +6,8 @@ import 'package:vector_math/vector_math_64.dart';
 
 void main() {
 
-  sky.PictureRecorder recorder = new sky.PictureRecorder();
-  sky.Canvas canvas = new sky.Canvas(recorder, new Rect.fromLTRB(0.0, 0.0, 100.0, 100.0));
+  ui.PictureRecorder recorder = new ui.PictureRecorder();
+  ui.Canvas canvas = new ui.Canvas(recorder, new Rect.fromLTRB(0.0, 0.0, 100.0, 100.0));
 
   test("matrix access should work", () {
     // Matrix equality doesn't work!

packages/unit/test/engine/inline_style_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:test/test.dart';
 
 void main() {
   test('should be settable using "style" attribute', () {
-    sky.LayoutRoot layoutRoot = new sky.LayoutRoot();
-    var document = new sky.Document();
+    ui.LayoutRoot layoutRoot = new ui.LayoutRoot();
+    var document = new ui.Document();
     var foo = document.createElement('foo');
     layoutRoot.rootElement = foo;
 
@@ -16,8 +16,8 @@ void main() {
   });
 
   test('should not crash when setting style to null', () {
-    sky.LayoutRoot layoutRoot = new sky.LayoutRoot();
-    var document = new sky.Document();
+    ui.LayoutRoot layoutRoot = new ui.LayoutRoot();
+    var document = new ui.Document();
     var foo = document.createElement('foo');
     layoutRoot.rootElement = foo;
 

packages/unit/test/engine/mock_events.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 export 'dart:ui' show Point;
 
-class TestPointerEvent extends sky.PointerEvent {
+class TestPointerEvent extends ui.PointerEvent {
   TestPointerEvent({
     this.type,
     this.pointer,
@@ -64,9 +64,9 @@ class TestPointer {
 
   int pointer;
   bool isDown = false;
-  sky.Point location;
+  ui.Point location;
 
-  sky.PointerEvent down([sky.Point newLocation = sky.Point.origin ]) {
+  ui.PointerEvent down([ui.Point newLocation = ui.Point.origin ]) {
     assert(!isDown);
     isDown = true;
     location = newLocation;
@@ -78,9 +78,9 @@ class TestPointer {
     );
   }
 
-  sky.PointerEvent move([sky.Point newLocation = sky.Point.origin ]) {
+  ui.PointerEvent move([ui.Point newLocation = ui.Point.origin ]) {
     assert(isDown);
-    sky.Offset delta = newLocation - location;
+    ui.Offset delta = newLocation - location;
     location = newLocation;
     return new TestPointerEvent(
       type: 'pointermove',
@@ -92,7 +92,7 @@ class TestPointer {
     );
   }
 
-  sky.PointerEvent up() {
+  ui.PointerEvent up() {
     assert(isDown);
     isDown = false;
     return new TestPointerEvent(
@@ -103,7 +103,7 @@ class TestPointer {
     );
   }
 
-  sky.PointerEvent cancel() {
+  ui.PointerEvent cancel() {
     assert(isDown);
     isDown = false;
     return new TestPointerEvent(

packages/unit/test/engine/text_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:test/test.dart';
 
 void main() {
   test("createText(null) shouldn't crash", () {
-    var doc = new sky.Document();
+    var doc = new ui.Document();
     doc.createText(null);
   });
 }

packages/unit/test/gestures/pointer_router_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:test/test.dart';
@@ -8,7 +8,7 @@ import '../engine/mock_events.dart';
 void main() {
   test('Should route pointers', () {
     bool callbackRan = false;
-    void callback(sky.PointerEvent event) {
+    void callback(ui.PointerEvent event) {
       callbackRan = true;
     }
 

packages/unit/test/gestures/scale_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:test/test.dart';
@@ -12,14 +12,14 @@ void main() {
     TapGestureRecognizer tap = new TapGestureRecognizer(router: router);
 
     bool didStartScale = false;
-    sky.Point updatedFocalPoint;
-    scale.onStart = (sky.Point focalPoint) {
+    ui.Point updatedFocalPoint;
+    scale.onStart = (ui.Point focalPoint) {
       didStartScale = true;
       updatedFocalPoint = focalPoint;
     };
 
     double updatedScale;
-    scale.onUpdate = (double scale, sky.Point focalPoint) {
+    scale.onUpdate = (double scale, ui.Point focalPoint) {
       updatedScale = scale;
       updatedFocalPoint = focalPoint;
     };
@@ -36,7 +36,7 @@ void main() {
 
     TestPointer pointer1 = new TestPointer(1);
 
-    sky.PointerEvent down = pointer1.down(new Point(10.0, 10.0));
+    ui.PointerEvent down = pointer1.down(new Point(10.0, 10.0));
     scale.addPointer(down);
     tap.addPointer(down);
 
@@ -58,7 +58,7 @@ void main() {
     router.route(pointer1.move(new Point(20.0, 30.0)));
     expect(didStartScale, isTrue);
     didStartScale = false;
-    expect(updatedFocalPoint, new sky.Point(20.0, 30.0));
+    expect(updatedFocalPoint, new ui.Point(20.0, 30.0));
     updatedFocalPoint = null;
     expect(updatedScale, 1.0);
     updatedScale = null;
@@ -67,7 +67,7 @@ void main() {
 
     // Two-finger scaling
     TestPointer pointer2 = new TestPointer(2);
-    sky.PointerEvent down2 = pointer2.down(new Point(10.0, 20.0));
+    ui.PointerEvent down2 = pointer2.down(new Point(10.0, 20.0));
     scale.addPointer(down2);
     tap.addPointer(down2);
     GestureArena.instance.close(2);
@@ -83,7 +83,7 @@ void main() {
     router.route(pointer2.move(new Point(0.0, 10.0)));
     expect(didStartScale, isTrue);
     didStartScale = false;
-    expect(updatedFocalPoint, new sky.Point(10.0, 20.0));
+    expect(updatedFocalPoint, new ui.Point(10.0, 20.0));
     updatedFocalPoint = null;
     expect(updatedScale, 2.0);
     updatedScale = null;
@@ -92,7 +92,7 @@ void main() {
 
     // Zoom out
     router.route(pointer2.move(new Point(15.0, 25.0)));
-    expect(updatedFocalPoint, new sky.Point(17.5, 27.5));
+    expect(updatedFocalPoint, new ui.Point(17.5, 27.5));
     updatedFocalPoint = null;
     expect(updatedScale, 0.5);
     updatedScale = null;
@@ -100,7 +100,7 @@ void main() {
 
     // Three-finger scaling
     TestPointer pointer3 = new TestPointer(3);
-    sky.PointerEvent down3 = pointer3.down(new Point(25.0, 35.0));
+    ui.PointerEvent down3 = pointer3.down(new Point(25.0, 35.0));
     scale.addPointer(down3);
     tap.addPointer(down3);
     GestureArena.instance.close(3);
@@ -116,7 +116,7 @@ void main() {
     router.route(pointer3.move(new Point(55.0, 65.0)));
     expect(didStartScale, isTrue);
     didStartScale = false;
-    expect(updatedFocalPoint, new sky.Point(30.0, 40.0));
+    expect(updatedFocalPoint, new ui.Point(30.0, 40.0));
     updatedFocalPoint = null;
     expect(updatedScale, 5.0);
     updatedScale = null;
@@ -128,7 +128,7 @@ void main() {
     router.route(pointer2.move(new Point(20.0, 30.0)));
     router.route(pointer3.move(new Point(15.0, 25.0)));
     expect(didStartScale, isFalse);
-    expect(updatedFocalPoint, new sky.Point(20.0, 30.0));
+    expect(updatedFocalPoint, new ui.Point(20.0, 30.0));
     updatedFocalPoint = null;
     expect(updatedScale, 1.0);
     updatedScale = null;
@@ -147,7 +147,7 @@ void main() {
     router.route(pointer3.move(new Point(10.0, 20.0)));
     expect(didStartScale, isTrue);
     didStartScale = false;
-    expect(updatedFocalPoint, new sky.Point(15.0, 25.0));
+    expect(updatedFocalPoint, new ui.Point(15.0, 25.0));
     updatedFocalPoint = null;
     expect(updatedScale, 2.0);
     updatedScale = null;
@@ -164,7 +164,7 @@ void main() {
     router.route(pointer3.move(new Point(0.0, 0.0)));
     expect(didStartScale, isTrue);
     didStartScale = false;
-    expect(updatedFocalPoint, new sky.Point(0.0, 0.0));
+    expect(updatedFocalPoint, new ui.Point(0.0, 0.0));
     updatedFocalPoint = null;
     expect(updatedScale, 1.0);
     updatedScale = null;

packages/unit/test/gestures/scroll_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/gestures.dart';
 import 'package:test/test.dart';
@@ -16,13 +16,13 @@ void main() {
       didStartPan = true;
     };
 
-    sky.Offset updatedScrollDelta;
-    pan.onUpdate = (sky.Offset offset) {
+    ui.Offset updatedScrollDelta;
+    pan.onUpdate = (ui.Offset offset) {
       updatedScrollDelta = offset;
     };
 
     bool didEndPan = false;
-    pan.onEnd = (sky.Offset velocity) {
+    pan.onEnd = (ui.Offset velocity) {
       didEndPan = true;
     };
 
@@ -32,7 +32,7 @@ void main() {
     };
 
     TestPointer pointer = new TestPointer(5);
-    sky.PointerEvent down = pointer.down(new Point(10.0, 10.0));
+    ui.PointerEvent down = pointer.down(new Point(10.0, 10.0));
     pan.addPointer(down);
     tap.addPointer(down);
     GestureArena.instance.close(5);
@@ -50,14 +50,14 @@ void main() {
     router.route(pointer.move(new Point(20.0, 20.0)));
     expect(didStartPan, isTrue);
     didStartPan = false;
-    expect(updatedScrollDelta, new sky.Offset(10.0, 10.0));
+    expect(updatedScrollDelta, new ui.Offset(10.0, 10.0));
     updatedScrollDelta = null;
     expect(didEndPan, isFalse);
     expect(didTap, isFalse);
 
     router.route(pointer.move(new Point(20.0, 25.0)));
     expect(didStartPan, isFalse);
-    expect(updatedScrollDelta, new sky.Offset(0.0, 5.0));
+    expect(updatedScrollDelta, new ui.Offset(0.0, 5.0));
     updatedScrollDelta = null;
     expect(didEndPan, isFalse);
     expect(didTap, isFalse);

packages/unit/test/rendering/image_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/rendering.dart';
 import 'package:test/test.dart';
 
 import 'rendering_tester.dart';
 
-class SquareImage implements sky.Image {
+class SquareImage implements ui.Image {
   int get width => 10;
   int get height => 10;
 }
 
-class WideImage implements sky.Image {
+class WideImage implements ui.Image {
   int get width => 20;
   int get height => 10;
 }
 
-class TallImage implements sky.Image {
+class TallImage implements ui.Image {
   int get width => 10;
   int get height => 20;
 }

packages/unit/test/widget/shader_mask_test.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/painting.dart';
 import 'package:flutter/widgets.dart';
@@ -6,7 +6,7 @@ import 'package:test/test.dart';
 
 import 'widget_tester.dart';
 
-sky.Shader createShader(Rect bounds) {
+ui.Shader createShader(Rect bounds) {
   return new LinearGradient(
       begin: Point.origin,
       end: new Point(0.0, bounds.height),

packages/unit/test/widget/widget_tester.dart

-import 'dart:ui' as sky;
+import 'dart:ui' as ui;
 
 import 'package:flutter/animation.dart';
 import 'package:flutter/rendering.dart';
@@ -159,13 +159,13 @@ class WidgetTester {
     _dispatchEvent(p.up(), result);
   }
 
-  void dispatchEvent(sky.Event event, Point location) {
+  void dispatchEvent(ui.Event event, Point location) {
     _dispatchEvent(event, _hitTest(location));
   }
 
   HitTestResult _hitTest(Point location) => WidgetFlutterBinding.instance.hitTest(location);
 
-  void _dispatchEvent(sky.Event event, HitTestResult result) {
+  void _dispatchEvent(ui.Event event, HitTestResult result) {
     WidgetFlutterBinding.instance.dispatchEvent(event, result);
   }
 

packages/updater/lib/main.dart

@@ -14,7 +14,7 @@ import 'package:yaml/yaml.dart' as yaml;
 import 'version.dart';
 import 'pipe_to_file.dart';
 
-const String kManifestFile = 'sky.yaml';
+const String kManifestFile = 'ui.yaml';
 const String kBundleFile = 'app.skyx';
 
 UpdateServiceProxy _initUpdateService() {