backdropOpacity method

Widget backdropOpacity(
  1. double opacity
)

backdrop-opacity - 背景透明度（通过 ColorFiltered 实现）

Implementation

Widget backdropOpacity(double opacity) {
  return ColorFiltered(
    colorFilter: ColorFilter.mode(
      Colors.white.withValues(alpha: opacity.clamp(0.0, 1.0)),
      BlendMode.modulate,
    ),
    child: build(),
  );
}