Barrier Around

A Flutter package that creates a barrier around any widget, no matter where it is.

What problem does it solve?

Sometimes we need to highlight or showcase a specific widget, that's an easy task if the widget is a direct child of a Stack, but what if we want to create a barrier around a specific widget, which is inside, for example, a Column. We can try to calculate positions and sizes, but that can get really messy, really fast.

View demo video

Usage

To use this plugin, add barrier_around as a dependency in your pubspec.yaml file.

Example

Create a GlobalKey in order to identify which widget you want to create the barrier around.

final GlobalKey _barrierKey = GlobalKey();

Wrap the widget you want to create the barrier around, and wrap it with a BarrierAround widget.

Assign the GlobalKey to the BarrierAround widget.

BarrierAround(
    key: _barrierKey,
    child: yourWidget
)

Whenever you want to show the barrier, just call:

BarrierAroundManager.showBarrier(_barrierKey);

To dismiss the barrier, just tap on it, this behavior is enabled by default. If you want the barrier to not dismiss on tap, you can set dismissOnBarrierTap to false in the BarrierAround widget.

If you want to dismiss the barrier from other place, just call:

BarrierAroundManager.dismissBarrier(_barrierKey);

Barrier customization

Name	Type	Description	Default
barrierBorderRadius	BorderRadius?	If your widget has a border radius, this is the place to put it	null
barrierColor	Color	Color of the barrier	Colors.black45
barrierOpacity	double	Barrier opacity	0.75
barrierBlur	double?	Barrier blur sigmaX and sigmaY	null
targetPadding	EdgeInsets	Padding around target widget	EdgeInsets.zero
onBarrierTap	VoidCallback?	Callback for the tap event on the barrier	null
dismissOnBarrierTap	bool	If barrier must dismiss when user taps on it	true
animateBarrier	bool	If show/dismiss of the barrier is animated	true
animationDuration	Duration	If animateBarrier is true, you can specify here the duration of the animation	Duration(milliseconds: 150)

Suggestions and contributions

If you have any suggestion around code improvement, bug fixes, new features, or you want to contribute in any way, feel free to raise an issue in Github or DM me in Twitter.