FAB Circular Menu

A Flutter package to create a nice circular menu using a Floating Action Button.

Inspired by Mayur Kshirsagar's great FAB Microinteraction design.

Installation

Just add fab_circular_menu to your pubspec.yml file

dependencies:
  fab_circular_menu: ^1.0.0

Example

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Placeholder(),
        floatingActionButton: FabCircularMenu(
          children: <Widget>[
            IconButton(icon: Icon(Icons.home), onPressed: () {
              print('Home');
            }),
            IconButton(icon: Icon(Icons.favorite), onPressed: () {
              print('Favorite');
            })
          ]
        )
      )
    );
  }
}

You can check for a more complete example in the example directory.

Customize

You can customize the widget appareance using the following properties:

Property	Description	Default
alignment	Sets the widget alignment	`Alignment.bottomRight`
ringColor	Sets the ring color	`accentColor`
ringDiameter	Sets the ring diameter	`screenWidth * 1.25` (portrait) `screenHeight * 1.25` (landscape)
ringWidth	Sets the ring width	`ringDiameter * 0.3`
fabSize	Sets the FAB size	`64.0`
fabElevation	Sets the elevation for the FAB	`8.0`
fabColor	Sets the FAB color	`primaryColor`
fabOpenColor	Sets the FAB color while the menu is open. This property takes precedence over `fabColor`	-
fabCloseColor	Sets the FAB color while the menu is closed. This property takes precedence over `fabColor`	-
fabChild	Sets the child inside the FAB. This property takes precedence over `fabOpenicon` and `fabCloseIcon`	-
fabOpenIcon	Sets the FAB icon while the menu is open	`Icon(Icons.menu)`
fabCloseIcon	Sets the FAB icon while the menu is closed	`Icon(Icons.close)`
fabMargin	Sets the widget margin	`EdgeInsets.all(16.0)`
animationDuration	Changes the animation duration	`Duration(milliseconds: 800)`
animationCurve	Allows you to modify the animation curve	`Curves.easeInOutCirc`
onDisplayChange	This callback is called every time the menu is opened or closed, passing the current state as a parameter.	-

Handling the menu programmatically

It is possible to handle the menu programatically by using a key. Just create a key and set it in the key property of the FabCircularMenu, then use the key to get the current state and open, close or check the status of the menu.

class MyApp extends StatelessWidget {
  final GlobalKey<FabCircularMenuState> fabKey = GlobalKey();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: RaisedButton(
          onPressed: () {
            if (fabKey.currentState.isOpen) {
              fabKey.currentState.close();
            } else {
              fabKey.currentState.open();
            }
          },
          child: Text('Toggle menu')
        ),
        floatingActionButton: FabCircularMenu(
          key: fabKey,
          children: <Widget>[
            // ...
          ]
        )
      )
    );
  }
}

Contributing