ColorOpacityEffect.by constructor

ColorOpacityEffect.by({
  1. required Paint paint,
  2. required double opacity,
  3. required Timeline timeline,
  4. bool? cleanup,
  5. bool? enabled,
})

Shifts paint's opacity by opacity, relative to its alpha when this effect starts.

Implementation

ColorOpacityEffect.by({
  required this.paint,
  required double opacity,
  required super.timeline,
  super.cleanup,
  super.enabled,
}) : _base = null,
     _span = opacity;