[rename fixit] Painter -> RenderObjectPainter

Fixes #774

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

@@ -239,7 +239,7 @@ class RenderBlockViewport extends RenderBlockBase {
     ExtentCallback totalExtentCallback,
     ExtentCallback maxCrossAxisDimensionCallback,
     ExtentCallback minCrossAxisDimensionCallback,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     Axis mainAxis: Axis.vertical,
     double itemExtent,
     double minExtent: 0.0,
@@ -309,9 +309,9 @@ class RenderBlockViewport extends RenderBlockBase {
     markNeedsLayout();
   }
 
-  Painter get overlayPainter => _overlayPainter;
-  Painter _overlayPainter;
-  void set overlayPainter(Painter value) {
+  RenderObjectPainter get overlayPainter => _overlayPainter;
+  RenderObjectPainter _overlayPainter;
+  void set overlayPainter(RenderObjectPainter value) {
     if (_overlayPainter == value)
       return;
     if (attached)

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

@@ -358,7 +358,7 @@ class RenderGrid extends RenderVirtualViewport<GridParentData> {
     int virtualChildBase: 0,
     int virtualChildCount,
     Offset paintOffset: Offset.zero,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     LayoutCallback callback
   }) : _delegate = delegate, _virtualChildBase = virtualChildBase, super(
     virtualChildCount: virtualChildCount,

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

@@ -20,7 +20,7 @@ class RenderList extends RenderVirtualViewport<ListParentData> {
     Offset paintOffset: Offset.zero,
     Axis mainAxis: Axis.vertical,
     ViewportAnchor anchor: ViewportAnchor.start,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     LayoutCallback callback
   }) : _itemExtent = itemExtent,
        _padding = padding,

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

@@ -323,7 +323,7 @@ class PaintingContext {
 ///
 /// A renderer may allow its paint() method to be augmented or redefined by
 /// providing a Painter. See for example overlayPainter in BlockViewport.
-abstract class Painter {
+abstract class RenderObjectPainter {
   RenderObject get renderObject => _renderObject;
   RenderObject _renderObject;
 

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

@@ -86,7 +86,7 @@ class RenderViewportBase extends RenderBox implements HasMainAxis {
     Offset paintOffset,
     Axis mainAxis,
     ViewportAnchor anchor,
-    Painter overlayPainter
+    RenderObjectPainter overlayPainter
   ) : _paintOffset = paintOffset,
       _mainAxis = mainAxis,
       _anchor = anchor,
@@ -150,9 +150,9 @@ class RenderViewportBase extends RenderBox implements HasMainAxis {
     markNeedsSemanticsUpdate();
   }
 
-  Painter get overlayPainter => _overlayPainter;
-  Painter _overlayPainter;
-  void set overlayPainter(Painter value) {
+  RenderObjectPainter get overlayPainter => _overlayPainter;
+  RenderObjectPainter _overlayPainter;
+  void set overlayPainter(RenderObjectPainter value) {
     if (_overlayPainter == value)
       return;
     if (attached)
@@ -220,7 +220,7 @@ class RenderViewport extends RenderViewportBase with RenderObjectWithChildMixin<
     Offset paintOffset: Offset.zero,
     Axis mainAxis: Axis.vertical,
     ViewportAnchor anchor: ViewportAnchor.start,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     this.onPaintOffsetUpdateNeeded
   }) : super(paintOffset, mainAxis, anchor, overlayPainter) {
     this.child = child;
@@ -340,7 +340,7 @@ abstract class RenderVirtualViewport<T extends ContainerBoxParentDataMixin<Rende
     Offset paintOffset: Offset.zero,
     Axis mainAxis: Axis.vertical,
     ViewportAnchor anchor: ViewportAnchor.start,
-    Painter overlayPainter
+    RenderObjectPainter overlayPainter
   }) : _virtualChildCount = virtualChildCount,
        _callback = callback,
        super(paintOffset, mainAxis, anchor, overlayPainter);

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

@@ -28,7 +28,7 @@ export 'package:flutter/rendering.dart' show
     MaxTileWidthGridDelegate,
     MultiChildLayoutDelegate,
     OneChildLayoutDelegate,
-    Painter,
+    RenderObjectPainter,
     PaintingContext,
     PlainTextSpan,
     PointerCancelEvent,
@@ -859,7 +859,7 @@ class Viewport extends OneChildRenderObjectWidget {
   /// Paints an overlay over the viewport.
   ///
   /// Often used to paint scroll bars.
-  final Painter overlayPainter;
+  final RenderObjectPainter overlayPainter;
 
   final ViewportDimensionsChangeCallback onPaintOffsetUpdateNeeded;
 

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

@@ -239,7 +239,7 @@ class PageViewport extends VirtualViewportFromIterable {
   final Axis mainAxis;
   final ViewportAnchor anchor;
   final bool itemsWrap;
-  final Painter overlayPainter;
+  final RenderObjectPainter overlayPainter;
   final Iterable<Widget> children;
 
   RenderList createRenderObject(BuildContext context) => new RenderList();

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

@@ -706,7 +706,7 @@ class Block extends StatelessComponent {
   }
 }
 
-abstract class ScrollableListPainter extends Painter {
+abstract class ScrollableListPainter extends RenderObjectPainter {
   void attach(RenderObject renderObject) {
     assert(renderObject is RenderBox);
     assert(renderObject is HasMainAxis);

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

@@ -111,7 +111,7 @@ class _VirtualListViewport extends VirtualViewport {
   final double itemExtent;
   final bool itemsWrap;
   final EdgeDims padding;
-  final Painter overlayPainter;
+  final RenderObjectPainter overlayPainter;
 
   double get _leadingPadding {
     switch (mainAxis) {
@@ -251,7 +251,7 @@ class ListViewport extends _VirtualListViewport with VirtualViewportFromIterable
     double itemExtent,
     bool itemsWrap: false,
     EdgeDims padding,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     this.children
   }) : super(
     onExtentsChanged,
@@ -360,7 +360,7 @@ class LazyListViewport extends _VirtualListViewport with VirtualViewportFromBuil
     ViewportAnchor anchor: ViewportAnchor.start,
     double itemExtent,
     EdgeDims padding,
-    Painter overlayPainter,
+    RenderObjectPainter overlayPainter,
     this.itemCount,
     this.itemBuilder
   }) : super(

packages/flutter/test/rendering/block_test.dart

@@ -8,7 +8,7 @@ import 'package:test/test.dart';
 
 import 'rendering_tester.dart';
 
-class TestBlockPainter extends Painter {
+class TestBlockPainter extends RenderObjectPainter {
   void paint(PaintingContext context, Offset offset) { }
 }