mod: 视频详情页样式

lib/common/widgets/sliver_header.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+class SliverHeaderDelegate extends SliverPersistentHeaderDelegate {
+  SliverHeaderDelegate({required this.height, required this.child});
+
+  final double height;
+  final Widget child;
+
+  @override
+  Widget build(
+      BuildContext context, double shrinkOffset, bool overlapsContent) {
+    return child;
+  }
+
+  @override
+  double get maxExtent => height;
+
+  @override
+  double get minExtent => height;
+
+  @override
+  bool shouldRebuild(covariant SliverPersistentHeaderDelegate oldDelegate) =>
+      true;
+}