Remove PaintingCanvas

We can just use Canvas now.  The two are the same thing.

examples/rendering/lib/sector_layout.dart

@@ -139,7 +139,7 @@ abstract class RenderDecoratedSector extends RenderSector {
       return;
 
     if (_decoration.backgroundColor != null) {
-      final PaintingCanvas canvas = context.canvas;
+      final Canvas canvas = context.canvas;
       Paint paint = new Paint()..color = _decoration.backgroundColor;
       Path path = new Path();
       double outerRadius = (parentData.radius + deltaRadius);

examples/rendering/touch_demo.dart

@@ -62,7 +62,7 @@ class RenderTouchDemo extends RenderBox {
   }
 
   void paint(PaintingContext context, Offset offset) {
-    final PaintingCanvas canvas = context.canvas;
+    final Canvas canvas = context.canvas;
     Paint white = new Paint()
         ..color = const Color(0xFFFFFFFF);
     canvas.drawRect(offset & size, white);

examples/stocks/lib/stock_arrow.dart

@@ -10,7 +10,7 @@ class StockArrowPainter extends CustomPainter {
   final Color color;
   final double percentChange;
 
-  void paint(PaintingCanvas canvas, Size size) {
+  void paint(Canvas canvas, Size size) {
     Paint paint = new Paint()..color = color;
     paint.strokeWidth = 1.0;
     const double padding = 2.0;

examples/widgets/gestures.dart

@@ -30,7 +30,7 @@ class _GesturePainter extends CustomPainter {
   final bool doubleTapEnabled;
   final bool longPressEnabled;
 
-  void paint(PaintingCanvas canvas, Size size) {
+  void paint(Canvas canvas, Size size) {
     Point center = (size.center(Point.origin).toOffset() * zoom + offset).toPoint();
     double radius = size.width / 2.0 * zoom;
     Gradient gradient = new RadialGradient(

examples/widgets/overlay_geometry.dart

@@ -28,7 +28,7 @@ class _MarkerPainter extends CustomPainter {
   final double size;
   final MarkerType type;
 
-  void paint(PaintingCanvas canvas, _) {
+  void paint(Canvas canvas, _) {
     Paint paint = new Paint()..color = const Color(0x8000FF00);
     double r = size / 2.0;
     canvas.drawCircle(new Point(r, r), r, paint);

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

@@ -173,7 +173,7 @@ class _RenderSwitch extends RenderToggleable {
   final BoxPainter _thumbPainter = new BoxPainter(const BoxDecoration());
 
   void paint(PaintingContext context, Offset offset) {
-    final PaintingCanvas canvas = context.canvas;
+    final Canvas canvas = context.canvas;
 
     final bool isActive = onChanged != null;
 

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

@@ -209,7 +209,7 @@ class _RenderTabBar extends RenderBox with
     return defaultHitTestChildren(result, position: position);
   }
 
-  void _paintIndicator(PaintingCanvas canvas, RenderBox selectedTab, Offset offset) {
+  void _paintIndicator(Canvas canvas, RenderBox selectedTab, Offset offset) {
     if (indicatorColor == null)
       return;
 

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

@@ -38,12 +38,6 @@ class ParentData {
   String toString() => '<none>';
 }
 
-/// Obsolete class that will be removed eventually
-class PaintingCanvas extends Canvas {
-  PaintingCanvas(ui.PictureRecorder recorder, Rect bounds) : super(recorder, bounds);
-  // TODO(ianh): Just use ui.Canvas everywhere instead
-}
-
 typedef void PaintingContextCallback(PaintingContext context, Offset offset);
 
 /// A place to paint.
@@ -145,14 +139,14 @@ class PaintingContext {
   // Recording state
   PictureLayer _currentLayer;
   ui.PictureRecorder _recorder;
-  PaintingCanvas _canvas;
+  Canvas _canvas;
 
   /// The canvas on which to paint.
   ///
   /// The current canvas can change whenever you paint a child using this
   /// context, which means it's fragile to hold a reference to the canvas
   /// returned by this getter.
-  PaintingCanvas get canvas {
+  Canvas get canvas {
     if (_canvas == null)
       _startRecording();
     return _canvas;
@@ -162,7 +156,7 @@ class PaintingContext {
     assert(!_isRecording);
     _currentLayer = new PictureLayer(paintBounds: _paintBounds);
     _recorder = new ui.PictureRecorder();
-    _canvas = new PaintingCanvas(_recorder, _paintBounds);
+    _canvas = new Canvas(_recorder, _paintBounds);
     _containerLayer.append(_currentLayer);
   }
 

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

@@ -991,7 +991,7 @@ class RenderSizeObserver extends RenderProxyBox {
 abstract class CustomPainter {
   const CustomPainter();
 
-  void paint(PaintingCanvas canvas, Size size);
+  void paint(Canvas canvas, Size size);
   bool shouldRepaint(CustomPainter oldDelegate);
   bool hitTest(Point position) => null;
 }

packages/flutter_sprites/lib/src/effect_line.dart

@@ -121,7 +121,7 @@ class EffectLine extends Node {
     }
   }
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     if (points.length < 2) return;
 
     _painter.points = points;

packages/flutter_sprites/lib/src/label.dart

@@ -33,7 +33,7 @@ class Label extends Node {
   TextPainter _painter;
   double _width;
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     if (_painter == null) {
       PlainTextSpan textSpan = new PlainTextSpan(_text);
       StyledTextSpan styledTextSpan = new StyledTextSpan(_textStyle, <TextSpan>[textSpan]);

packages/flutter_sprites/lib/src/layer.dart

@@ -25,14 +25,14 @@ class Layer extends Node with SpritePaint {
     ..filterQuality = ui.FilterQuality.low
     ..isAntiAlias = false;
 
-  void _prePaint(PaintingCanvas canvas, Matrix4 matrix) {
+  void _prePaint(Canvas canvas, Matrix4 matrix) {
     super._prePaint(canvas, matrix);
 
     _updatePaint(_cachedPaint);
     canvas.saveLayer(layerRect, _cachedPaint);
   }
 
-  void _postPaint(PaintingCanvas canvas, Matrix4 totalMatrix) {
+  void _postPaint(Canvas canvas, Matrix4 totalMatrix) {
     canvas.restore();
     super._postPaint(canvas, totalMatrix);
   }

packages/flutter_sprites/lib/src/node.dart

@@ -648,7 +648,7 @@ class Node {
 
   // Rendering
 
-  void _visit(PaintingCanvas canvas, Matrix4 totalMatrix) {
+  void _visit(Canvas canvas, Matrix4 totalMatrix) {
     assert(canvas != null);
     if (!visible) return;
 
@@ -657,7 +657,7 @@ class Node {
     _postPaint(canvas, totalMatrix);
   }
 
-  void _prePaint(PaintingCanvas canvas, Matrix4 matrix) {
+  void _prePaint(Canvas canvas, Matrix4 matrix) {
     _savedTotalMatrix = new Matrix4.copy(matrix);
 
     // Get the transformation matrix and apply transform
@@ -672,7 +672,7 @@ class Node {
   /// bounding box's origin, override [NodeWithSize] and call the applyTransformForPivot method before making calls for
   /// drawing.
   ///
-  ///     void paint(PaintingCanvas canvas) {
+  ///     void paint(Canvas canvas) {
   ///       canvas.save();
   ///       applyTransformForPivot(canvas);
   ///
@@ -680,10 +680,10 @@ class Node {
   ///
   ///       canvas.restore();
   ///     }
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
   }
 
-  void _visitChildren(PaintingCanvas canvas, Matrix4 totalMatrix) {
+  void _visitChildren(Canvas canvas, Matrix4 totalMatrix) {
     // Sort children if needed
     _sortChildren();
 
@@ -709,7 +709,7 @@ class Node {
     }
   }
 
-  void _postPaint(PaintingCanvas canvas, Matrix4 totalMatrix) {
+  void _postPaint(Canvas canvas, Matrix4 totalMatrix) {
     totalMatrix.setFrom(_savedTotalMatrix);
   }
 

packages/flutter_sprites/lib/src/node_with_size.dart

@@ -33,7 +33,7 @@ class NodeWithSize extends Node {
   /// If you use this method you will need to save and restore your canvas at the beginning and
   /// end of your [paint] method.
   ///
-  ///     void paint(PaintingCanvas canvas) {
+  ///     void paint(Canvas canvas) {
   ///       canvas.save();
   ///       applyTransformForPivot(canvas);
   ///
@@ -41,7 +41,7 @@ class NodeWithSize extends Node {
   ///
   ///       canvas.restore();
   ///     }
-  void applyTransformForPivot(PaintingCanvas canvas) {
+  void applyTransformForPivot(Canvas canvas) {
     if (pivot.x != 0 || pivot.y != 0) {
       double pivotInPointsX = size.width * pivot.x;
       double pivotInPointsY = size.height * pivot.y;

packages/flutter_sprites/lib/src/particle_system.dart

@@ -357,7 +357,7 @@ class ParticleSystem extends Node {
     _numEmittedParticles++;
   }
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
 
     List<ui.RSTransform> transforms = <ui.RSTransform>[];
     List<Rect> rects = <Rect>[];

packages/flutter_sprites/lib/src/physics_debug.dart

@@ -14,7 +14,7 @@ class _PhysicsDebugDraw extends box2d.DebugDraw {
 
   PhysicsWorld physicsWorld;
 
-  PaintingCanvas canvas;
+  Canvas canvas;
 
   void drawSegment(Vector2 p1, Vector2 p2, box2d.Color3i color) {
     Paint paint = new Paint()

packages/flutter_sprites/lib/src/physics_world.dart

@@ -267,7 +267,7 @@ class PhysicsWorld extends Node {
     _contactHandler.addContactCallback(callback, tagA, tagB, type);
   }
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     if (drawDebug) {
       _debugDrawTransform = new Matrix4.fromFloat64List(canvas.getTotalMatrix());
     }
@@ -276,7 +276,7 @@ class PhysicsWorld extends Node {
 
   /// Draws the debug data of the physics world, normally this method isn't
   /// invoked directly. Instead, set the [drawDebug] property to true.
-  void paintDebug(PaintingCanvas canvas) {
+  void paintDebug(Canvas canvas) {
     _debugDraw.canvas = canvas;
     b2World.drawDebugData();
   }

packages/flutter_sprites/lib/src/sprite.dart

@@ -44,7 +44,7 @@ class Sprite extends NodeWithSize with SpritePaint {
     pivot = new Point(0.5, 0.5);
   }
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     // Account for pivot point
     applyTransformForPivot(canvas);
 

packages/flutter_sprites/lib/src/sprite_box.dart

@@ -336,7 +336,7 @@ class SpriteBox extends RenderBox {
   }
 
   void paint(PaintingContext context, Offset offset) {
-    final PaintingCanvas canvas = context.canvas;
+    final Canvas canvas = context.canvas;
     canvas.save();
 
     // Move to correct coordinate space before drawing

packages/flutter_sprites/lib/src/texture.dart

@@ -73,7 +73,7 @@ class Texture {
     return new Texture._fromSpriteFrame(image, name, rect.size, false, false, srcFrame, dstFrame, new Point(0.5, 0.5));
   }
 
-  void drawTexture(PaintingCanvas canvas, Point position, Paint paint) {
+  void drawTexture(Canvas canvas, Point position, Paint paint) {
     // Get drawing position
     double x = position.x;
     double y = position.y;

packages/flutter_sprites/lib/src/textured_line.dart

@@ -7,7 +7,7 @@ class TexturedLine extends Node {
 
   TexturedLinePainter painter;
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     painter.paint(canvas);
   }
 }
@@ -81,7 +81,7 @@ class TexturedLinePainter {
 
   Paint _cachedPaint = new Paint();
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     // Check input values
     assert(_points != null);
     if (_points.length < 2) return;

packages/flutter_sprites/lib/src/virtual_joystick.dart

@@ -54,7 +54,7 @@ class VirtualJoystick extends NodeWithSize {
     return true;
   }
 
-  void paint(PaintingCanvas canvas) {
+  void paint(Canvas canvas) {
     applyTransformForPivot(canvas);
     canvas.drawCircle(_handlePos, 25.0, _paintHandle);
     canvas.drawCircle(_center, 40.0, _paintControl);