BackdropFilter
A widget that applies a filter to the existing painted content and then paints child.
Example
Stack( fit: StackFit.expand, children: <Widget>[ Text('0' * 10000), Center( child: ClipRect( // <-- clips to the 200x200 [Container] below child: BackdropFilter( filter: ImageFilter.blur( sigmaX: 5.0, sigmaY: 5.0, ), child: Container( alignment: Alignment.center, width: 200.0, height: 200.0, child: Text('Hello World'), ), ), ), ), ], )