MarqueeView constructor
const
MarqueeView({})
Implementation
const MarqueeView({
Key? key,
this.stepOffset=1,
this.duration = const Duration(microseconds: 500),
this.direction = MarqueeDirection.vertical,
required this.marqueeItems,
required this.buildItem,
///以下垂直滚动属性
this.itemExtent = 40,
this.interval = 2,
this.animateSpeed = 1,
this.onIndexChange,
}) : super(key: key);