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:         painter: new _CircularProgressIndicatorPainter(
            valueColor: _getValueColor(context),
            value: value,
            animationValue: animationValue
          )
        )
      );
    }
  }
  
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)}%');
    }
  }
  
  