56 lines
1.6 KiB
Dart
56 lines
1.6 KiB
Dart
import 'package:flutter/material.dart';
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class ScrollAppBar extends StatelessWidget {
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final double scrollVal;
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final Function callback;
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final bool playerStatus;
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const ScrollAppBar(
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this.scrollVal,
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this.callback,
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this.playerStatus,
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Key? key,
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) : super(key: key);
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@override
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Widget build(BuildContext context) {
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final double statusBarHeight = MediaQuery.of(context).padding.top;
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final videoHeight = MediaQuery.of(context).size.width * 9 / 16;
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return Positioned(
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top: -videoHeight + scrollVal + kToolbarHeight + 0.5,
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left: 0,
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right: 0,
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child: Opacity(
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opacity: scrollVal / (videoHeight - kToolbarHeight),
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child: Container(
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height: statusBarHeight + kToolbarHeight,
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color: Theme.of(context).colorScheme.background,
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padding: EdgeInsets.only(top: statusBarHeight),
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child: AppBar(
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primary: false,
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elevation: 0,
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scrolledUnderElevation: 0,
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centerTitle: true,
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title: TextButton(
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onPressed: () => callback(),
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child: const Row(
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mainAxisSize: MainAxisSize.min,
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children: [Icon(Icons.play_arrow_rounded), Text('继续播放')],
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),
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),
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actions: [
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IconButton(
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onPressed: () {},
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icon: const Icon(
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Icons.share,
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size: 20,
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)),
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const SizedBox(width: 12)
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],
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),
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),
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),
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);
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}
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}
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