opacity property Null safety
final
The target opacity.
An opacity of 1.0 is fully opaque. An opacity of 0.0 is fully transparent (i.e., invisible).
The opacity must not be null.
Implementation
final double opacity;
The target opacity.
An opacity of 1.0 is fully opaque. An opacity of 0.0 is fully transparent (i.e., invisible).
The opacity must not be null.
final double opacity;