backdropKey property

BackdropKey? get backdropKey

The backdrop key that identifies the BackdropGroup this filter will apply to.

The default value for the backdrop key is null, meaning that it's not part of a BackdropGroup.

The scene must be explicitly recomposited after this property is changed (as described at Layer).

Implementation

BackdropKey? get backdropKey => _backdropKey;
set backdropKey (BackdropKey? value)

Implementation

set backdropKey(BackdropKey? value) {
  if (value != _backdropKey) {
    _backdropKey = value;
    markNeedsAddToScene();
  }
}