Border Radius to Foil Container

[rajaarav0]

Is there a way I can provide border radius or alter the shape of Foil widget?

[Zabadam]

Any widget that you create with rounded corners may then be provided as the child of a new Foil widget.

Consider

return Foil(
  child: SizedBox(
    width: 300,
    height: 300,
    child: DecoratedBox(
      decoration: BoxDecoration(
        // there has to be *something* with which to mask the Foil
        color: Colors.black,
        borderRadius: BorderRadius.circular(25),
      ),
    ),
  ),
);

or even

return Foil(
  child: Text(
    '🔴', // red circle emoji
    style: const TextStyle(fontSize: 200),
  ),
);

If the red circle emoji does not appear in the above code, the referenced character is 🔴.

I wrote this comment on mobile without verifying the code.