567 lines
18 KiB
Dart
567 lines
18 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:media_kit/media_kit.dart';
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import 'package:media_kit_video/media_kit_video.dart';
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import '../../core/config/test_stream.dart';
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import '../../core/network/api_exception.dart';
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import '../../core/theme/app_theme.dart';
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import '../../core/storage/watch_dedup_store.dart';
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import '../../models/video_item.dart';
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import '../../services/video_service.dart';
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import '../feed/widgets/feed_overlays.dart';
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/// 单视频播放页（搜索/用户主页/作品/收藏/历史共用）：
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/// - 一条极薄进度条贴视频底部，可点击跳转 / 可拖动 seek
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/// - 顶部返回 + 倍速 + 系列
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/// - 点屏幕中央切换播放/暂停（图标短暂淡出）
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class SimplePlayerScreen extends StatefulWidget {
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const SimplePlayerScreen({super.key, required this.item});
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final VideoItem item;
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@override
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State<SimplePlayerScreen> createState() => _SimplePlayerScreenState();
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}
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class _SimplePlayerScreenState extends State<SimplePlayerScreen> {
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late Player _player = Player();
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late VideoController _controller = VideoController(_player);
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Duration _position = Duration.zero;
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Duration _duration = Duration.zero;
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bool _playing = true;
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double _rate = 1.0;
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bool _seeking = false;
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Map<String, dynamic>? _seriesData;
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Timer? _pauseIconTimer;
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bool _showPauseIcon = false;
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StreamSubscription<Duration>? _posSub;
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StreamSubscription<Duration>? _durSub;
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@override
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void initState() {
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super.initState();
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_open(widget.item);
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_reportWatch();
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_loadSeries();
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_subscribePlayer();
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}
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void _subscribePlayer() {
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_posSub = _player.stream.position.listen((p) {
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if (!mounted || _seeking) return;
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setState(() => _position = p);
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});
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_durSub = _player.stream.duration.listen((d) {
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if (!mounted) return;
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setState(() => _duration = d);
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});
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}
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void _open(VideoItem item) {
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_player.open(Media(resolvePlayUrl(item)), play: true);
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}
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Future<void> _loadSeries() async {
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final data = await VideoService.fetchVideoSeries(widget.item.videoId);
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if (!mounted) return;
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setState(() => _seriesData = data);
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}
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@override
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void dispose() {
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_pauseIconTimer?.cancel();
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_posSub?.cancel();
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_durSub?.cancel();
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_player.dispose();
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super.dispose();
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}
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// ---------- 播放控制 ----------
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void _toggle() {
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setState(() => _playing = !_playing);
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_playing ? _player.play() : _player.pause();
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// 短暂显示暂停/播放图标
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setState(() => _showPauseIcon = true);
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_pauseIconTimer?.cancel();
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_pauseIconTimer = Timer(const Duration(milliseconds: 600), () {
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if (mounted) setState(() => _showPauseIcon = false);
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});
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}
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// ---------- 进度条 seek ----------
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double get _sliderValue {
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final total = _duration.inMilliseconds;
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if (total <= 0) return 0;
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final cur = _position.inMilliseconds.clamp(0, total);
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return cur / total;
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}
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void _onSeekStart(double v) {
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_seeking = true;
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}
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void _onSeek(double v) {
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setState(() {});
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}
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void _onSeekEnd(double v) {
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_seeking = false;
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final totalMs = _duration.inMilliseconds;
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if (totalMs > 0) {
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_player.seek(Duration(milliseconds: (v * totalMs).round()));
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}
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}
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// ---------- 倍速 ----------
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static const _rates = [1.0, 1.25, 1.5, 2.0];
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void _setRate(double r) {
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_player.setRate(r);
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setState(() => _rate = r);
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}
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// ---------- 系列 ----------
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bool get _hasSeries =>
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_seriesData != null && (_seriesData!['has_series'] as bool? ?? false);
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List<dynamic> get _episodes => (_seriesData?['episodes'] as List?) ?? const [];
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void _showSeriesSheet() {
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showModalBottomSheet<void>(
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context: context,
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backgroundColor: Colors.transparent,
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isScrollControlled: true,
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builder: (_) => DraggableScrollableSheet(
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initialChildSize: 0.65,
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minChildSize: 0.4,
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maxChildSize: 0.9,
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builder: (_, controller) => Container(
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decoration: const BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
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),
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child: Column(
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children: [
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Center(
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child: Container(
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margin: const EdgeInsets.only(top: 12),
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width: 40, height: 4,
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decoration: BoxDecoration(
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color: Colors.grey[300],
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borderRadius: BorderRadius.circular(2),
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),
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),
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),
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Padding(
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padding: const EdgeInsets.all(16),
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child: Row(
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children: [
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ClipRRect(
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borderRadius: BorderRadius.circular(8),
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child: (_seriesData!['series']['cover_url'] as String?)
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?.isNotEmpty ==
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true
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? Image.network(
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_seriesData!['series']['cover_url'],
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width: 64, height: 64, fit: BoxFit.cover,
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errorBuilder: (_, __, ___) =>
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const SizedBox(width: 64, height: 64),
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)
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: Container(
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width: 64, height: 64, color: Colors.grey[200]),
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),
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const SizedBox(width: 12),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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_seriesData!['series']['title'] ?? '',
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style: const TextStyle(
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fontSize: 16, fontWeight: FontWeight.w600),
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maxLines: 1, overflow: TextOverflow.ellipsis,
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),
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const SizedBox(height: 4),
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Text(
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'共 ${_seriesData!['series']['total_episodes']} 集',
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style: TextStyle(
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color: Colors.grey[600], fontSize: 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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const Divider(height: 1),
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Expanded(
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child: GridView.builder(
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controller: controller,
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padding: const EdgeInsets.all(16),
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gridDelegate:
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const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 4,
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mainAxisSpacing: 10,
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crossAxisSpacing: 10,
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childAspectRatio: 1,
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),
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itemCount: _episodes.length,
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itemBuilder: (_, i) {
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final ep = _episodes[i] as Map<String, dynamic>;
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final isCurrent =
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ep['video_id'] == widget.item.videoId;
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return GestureDetector(
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onTap: () => _switchToEpisode(ep),
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child: Container(
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decoration: BoxDecoration(
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color: isCurrent
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? AppColors.primary.withValues(alpha: 0.15)
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: Colors.grey[100],
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border: Border.all(
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color: isCurrent
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? AppColors.primary
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: Colors.transparent),
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borderRadius: BorderRadius.circular(8),
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),
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child: Center(
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child: Text(
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ep['episode_no']?.toString() ?? '${i + 1}',
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style: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.w700,
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color: isCurrent
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? AppColors.primary
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: Colors.black87,
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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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),
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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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void _switchToEpisode(Map<String, dynamic> ep) {
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Navigator.of(context).pop();
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final newItem = VideoItem(
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videoId: ep['video_id'],
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title: ep['title'] ?? '',
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coverUrl: ep['cover_url'] ?? '',
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videoUrl: ep['video_url'] ?? '',
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duration: (ep['duration'] as num?)?.toInt() ?? 0,
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author: widget.item.author,
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);
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setState(() {
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_player.dispose();
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_player = Player();
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_controller = VideoController(_player);
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_position = Duration.zero;
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_duration = Duration.zero;
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_open(newItem);
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_seriesData = null;
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});
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_subscribePlayer();
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_reportWatch();
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_loadSeries();
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}
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// ---------- Watch ----------
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Future<void> _reportWatch() async {
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final dedup = WatchDedupStore.I;
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if (dedup.hasWatched(widget.item.videoId)) return;
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await dedup.markWatched(widget.item.videoId);
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try {
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final result = await VideoService.reportWatch(widget.item.videoId);
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if (!mounted) return;
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if (result.isPointsCost) {
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showTopToast(context, '本次消耗 ${result.costPoints} 积分');
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}
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} on ApiException catch (e) {
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if (!mounted) return;
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_player.pause();
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if (e.isGuestLimit) {
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showGuestLimitDialog(context);
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} else if (e.isPointsInsufficient) {
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showPointsInsufficientDialog(
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context,
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(e.data?['points'] as num?)?.toInt() ?? 0,
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);
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} else {
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showTopToast(context, e.message);
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}
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} catch (_) {}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.black,
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body: GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: _toggle,
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child: Stack(
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fit: StackFit.expand,
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children: [
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// 视频画面
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Center(
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child: Video(
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controller: _controller,
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controls: NoVideoControls,
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fit: BoxFit.contain,
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),
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),
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// 中央播放/暂停图标（短暂显示）
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if (_showPauseIcon)
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const IgnorePointer(
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child: Center(
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child: Icon(
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Icons.play_circle_outline,
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size: 72,
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color: Colors.white70,
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),
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),
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),
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// ---------- 顶部：返回 + 倍速 + 系列 ----------
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SafeArea(
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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const BackButton(color: Colors.white),
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Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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// 倍速
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PopupMenuButton<double>(
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initialValue: _rate,
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icon: const Icon(Icons.speed, color: Colors.white),
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tooltip: '倍速',
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onSelected: _setRate,
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itemBuilder: (_) => _rates
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.map((r) => PopupMenuItem(
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value: r,
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child: Text('${r}x'),
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))
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.toList(),
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),
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if (_hasSeries)
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IconButton(
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icon: const Icon(Icons.menu_book, color: Colors.white),
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tooltip: '查看系列',
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onPressed: _showSeriesSheet,
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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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// ---------- 底部：标题 + 抖音风格细进度条 ----------
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Positioned(
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left: 0, right: 0, bottom: 0,
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child: IgnorePointer(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题信息（贴底，不占用视频观看空间）
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 0, 16, 4),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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'@${widget.item.author.nickname}',
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style: const TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w600,
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color: Colors.white),
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),
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const SizedBox(height: 2),
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Text(
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widget.item.title,
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style: const TextStyle(
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fontSize: 12, color: Colors.white70),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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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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),
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// 进度条：抖音风格一条细线，覆盖视频底部
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Positioned(
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left: 0, right: 0, bottom: 0,
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child: _ThinProgressBar(
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value: _sliderValue,
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onChanged: _onSeek,
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onChangeStart: _onSeekStart,
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onChangeEnd: _onSeekEnd,
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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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}
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/// 抖音风格进度条：默认一条 2px 细线（已播放部分白色、未播放部分 20% 透明白），
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/// 拖动时自动变厚显示 thumb，松开后恢复细线。
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class _ThinProgressBar extends StatefulWidget {
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const _ThinProgressBar({
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required this.value,
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required this.onChanged,
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required this.onChangeStart,
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required this.onChangeEnd,
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});
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final double value;
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final ValueChanged<double> onChanged;
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final ValueChanged<double> onChangeStart;
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final ValueChanged<double> onChangeEnd;
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@override
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State<_ThinProgressBar> createState() => _ThinProgressBarState();
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}
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class _ThinProgressBarState extends State<_ThinProgressBar> {
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bool _dragging = false;
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double _dragValue = 0;
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void _start(Offset local, double width) {
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setState(() => _dragging = true);
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widget.onChangeStart(widget.value);
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_update(local, width);
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}
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void _update(Offset local, double width) {
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final v = (local.dx / width).clamp(0.0, 1.0);
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_dragValue = v;
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widget.onChanged(v);
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}
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void _end(double width) {
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setState(() => _dragging = false);
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final v = _dragValue.clamp(0.0, 1.0);
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widget.onChangeEnd(v);
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}
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@override
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Widget build(BuildContext context) {
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return LayoutBuilder(
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builder: (_, constraints) {
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final w = constraints.maxWidth;
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return GestureDetector(
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behavior: HitTestBehavior.opaque,
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onHorizontalDragStart: (d) => _start(d.localPosition, w),
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onHorizontalDragUpdate: (d) => _update(d.localPosition, w),
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onHorizontalDragEnd: (_) => _end(w),
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onTapDown: (d) {
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setState(() => _dragging = true);
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_start(d.localPosition, w);
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},
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onTapUp: (_) => _end(w),
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child: Container(
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height: 32, // 触摸热区 32px（比视觉线条大，提升交互）
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alignment: Alignment.bottomCenter,
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child: AnimatedContainer(
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duration: _dragging
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? Duration.zero
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: const Duration(milliseconds: 150),
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curve: Curves.easeOut,
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height: _dragging ? 4.0 : 2.0, // 拖动时变厚
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color: Colors.transparent,
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child: CustomPaint(
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painter: _ProgressPainter(
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value: _dragging ? _dragValue : widget.value,
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dragging: _dragging,
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),
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size: Size(w, _dragging ? 20 : 4),
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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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}
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class _ProgressPainter extends CustomPainter {
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_ProgressPainter({required this.value, required this.dragging});
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final double value;
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final bool dragging;
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@override
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void paint(Canvas canvas, Size size) {
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final w = size.width;
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final h = dragging ? 3.0 : 2.0;
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final y = (size.height - h) / 2;
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// 背景：未播放部分（20% 透明白）
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final trackPaint = Paint()
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..color = Colors.white.withValues(alpha: dragging ? 0.35 : 0.22)
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..strokeCap = StrokeCap.round
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..strokeWidth = h;
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canvas.drawLine(
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Offset(0, size.height / 2),
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Offset(w, size.height / 2),
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trackPaint,
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);
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// 已播放部分（纯白）
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if (value > 0) {
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final playedPaint = Paint()
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..color = Colors.white
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..strokeCap = StrokeCap.round
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..strokeWidth = h;
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canvas.drawLine(
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Offset(0, size.height / 2),
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Offset(value * w, size.height / 2),
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playedPaint,
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);
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}
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// 拖动时显示 thumb（小圆点）
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if (dragging) {
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final thumbPaint = Paint()
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..color = Colors.white
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..style = PaintingStyle.fill;
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canvas.drawCircle(
|
|
Offset(value * w, size.height / 2),
|
|
6,
|
|
thumbPaint,
|
|
);
|
|
}
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant _ProgressPainter oldDelegate) =>
|
|
value != oldDelegate.value || dragging != oldDelegate.dragging;
|
|
}
|