backdrop 0.0.3

Backdrop implementaion in dart. (https://material.io/design/components/backdrop.htm)

example/lib/main.dart

import 'package:backdrop/backdrop.dart';
import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Backdrop Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key}) : super(key: key);

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage>
    with SingleTickerProviderStateMixin {
  AnimationController controller;

  @override
  void initState() {
    super.initState();
    controller = AnimationController(
        vsync: this, duration: Duration(milliseconds: 100), value: 1.0);
  }

  @override
  void dispose() {
    super.dispose();
    controller.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return BackdropScaffold(
      controller: controller,
      title: Text("Backpanel Example"),
      backpanel: Center(
        child: Text("Backpanel"),
      ),
      body: Center(
        child: Text("Backpanel"),
      ),
    );
  }
}