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- import 'package:flutter/material.dart';
-
- class SliverTabBarDelegate extends SliverPersistentHeaderDelegate {
- final TabBar widget;
-
- const SliverTabBarDelegate(this.widget) : assert(widget != null);
-
- @override
- Widget build(BuildContext context, double shrinkOffset, bool overlapsContent) {
- return this.widget;
- }
-
- @override
- bool shouldRebuild(SliverTabBarDelegate oldDelegate) {
- return false;
- }
-
- @override
- double get maxExtent => widget.preferredSize.height;
-
- @override
- double get minExtent => widget.preferredSize.height;
- }
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