A Flutter widget that paints an image and moves it

dependencies:
  parallax_image: ^0.2.0

class MyWidget extends StatefulWidget {
  @override
  MyWidgetState createState() => new MyWidgetState();
}

class MyWidgetState extends State<MyWidget> {
  final _controller = new ScrollController();

  @override
  Widget build(BuildContext context) {
    return new ListView(controller: _controller, children: [
      new ParallaxImage(
        image: new AssetImage('images/january.jpg'),
        // Extent of this widget in scroll direction.
        // In this case it is vertical scroll so extent defines
        // the height of this widget.
        // The image is scaled with BoxFit.fitWidth which makes it
        // occupy full width of this widget.
        // After image is scaled it should normally have height greater
        // than this value to allow for parallax effect to be
        // visible.
        extent: 100.0,
        // Optionally specify child widget.
        child: new Text('January'),
        // Optinally specify scroll controller.
        controller: _controller,
      ),
      // ...add more list items
    ]);
  }
}