import 'package:comunes_flutter/comunes_flutter.dart';
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';

/// Compass button widget for resetting map rotation to north
class CompassMapPluginWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
        builder: (context, constraints) =>
            Stack(fit: StackFit.expand, children: <Widget>[
              Positioned(
                top: 10.0,
                right: 10.0,
                child: new CenteredRow(
                  children: <Widget>[
                    new Column(
                      children: <Widget>[
                        _compassButton(context),
                      ],
                    )
                  ],
                ),
              )
            ]));
  }

  FloatingActionButton _compassButton(BuildContext context) {
    return FloatingActionButton(
      backgroundColor: Colors.black26,
      mini: true,
      heroTag: 'compass_button',
      onPressed: () {
        final controller = MapController.of(context);
        // Reset rotation to 0 (north) while keeping center and zoom
        controller.rotate(0);
      },
      child: Icon(Icons.explore),
    );
  }
}