/// 自定义粘性委托类
library;

import 'package:flutter/material.dart';

class CustomStickyHeader extends SliverPersistentHeaderDelegate {
  final PreferredSize child;

  CustomStickyHeader({required this.child});

  @override
  double get minExtent => child.preferredSize.height;

  @override
  double get maxExtent => child.preferredSize.height;

  @override
  bool shouldRebuild(SliverPersistentHeaderDelegate oldDelegate) {
    return true;
  }

  @override
  Widget build(BuildContext context, double shrinkOffset, bool overlapsContent) {
    return child;
  }
}