anchor.diff:  // found in the LICENSE file.
   
   import 'dart:math' as math;
  -
  +import 'dart:ui' as ui;
  +
  +import 'package:flutter/animation.dart';
   import 'package:flutter/widgets.dart';
   
   import 'theme.dart';
   
   const double _kLinearProgressIndicatorHeight = 6.0;
  -const double _kMinCircularProgressIndicatorSize = 15.0;
  -const double _kCircularProgressIndicatorStrokeWidth = 3.0;
  +const double _kMinCircularProgressIndicatorSize = 36.0;
  +const double _kCircularProgressIndicatorStrokeWidth = 4.0;
   
   // TODO(hansmuller) implement the support for buffer indicator
   
  
positive.code:     double value
    }) : super(key: key, value: value);
  
    Widget _buildIndicator(BuildContext context, double animationValue) {
      return new Container(
        constraints: new BoxConstraints(
          minWidth: _kMinCircularProgressIndicatorSize,
  
negative.code:   Color _getBackgroundColor(BuildContext context) => Theme.of(context).primarySwatch[200];
    Color _getValueColor(BuildContext context) => Theme.of(context).primaryColor;
  
    void debugFillDescription(List<String> description) {
      super.debugFillDescription(description);
      description.add('${(value.clamp(0.0, 1.0) * 100.0).toStringAsFixed(1)}%');
    }
  }
  
  