995 lines
32 KiB
Dart
995 lines
32 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.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 'package:share_plus/share_plus.dart';
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import '../../core/config/test_stream.dart';
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import '../../core/media/download_manager.dart';
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import '../../core/media/local_media_server.dart';
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import '../../core/network/api_exception.dart';
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import '../../core/storage/watch_dedup_store.dart';
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import '../../core/theme/app_theme.dart';
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import '../../models/video_item.dart';
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import '../../providers/auth_provider.dart';
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import '../../services/video_service.dart';
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import '../feed/widgets/comment_sheet.dart';
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import '../feed/widgets/feed_overlays.dart';
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import '../feed/widgets/interaction_bar.dart';
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import '../feed/widgets/video_info_section.dart';
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/// 单视频播放页（搜索/用户主页/作品/收藏/历史/系列共用）：
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/// 与 Feed 页体验一致：右侧互动栏、左下信息区、双击点赞、长按倍速/分享、
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/// 抖音风格细进度条、系列视频支持上下划切换集数
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class SimplePlayerScreen extends ConsumerStatefulWidget {
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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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ConsumerState<SimplePlayerScreen> createState() =>
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_SimplePlayerScreenState();
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}
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class _SimplePlayerScreenState extends ConsumerState<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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bool _showPauseIcon = false;
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Timer? _pauseIconTimer;
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bool _seeking = false;
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double _seekValue = 0;
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// 系列
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Map<String, dynamic>? _seriesData;
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List<VideoItem> _episodeItems = [];
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late PageController _pageController;
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int _currentPage = 0;
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// 当前播放的 item（切集后更新，供互动栏/信息区用）
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late VideoItem _currentItem = widget.item;
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// 互动状态（切集后从后端重新拉取）
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bool _isLiked = false;
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bool _isFavorited = false;
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int _likeCount = 0;
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int _favoriteCount = 0;
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int _commentCount = 0;
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StreamSubscription<Duration>? _posSub;
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StreamSubscription<Duration>? _durSub;
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static const _rates = [1.0, 1.5, 2.0, 3.0];
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double _rate = 1.0;
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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 =>
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(_seriesData?['episodes'] as List?) ?? const [];
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String get _seriesTitle =>
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_seriesData?['series']?['title'] as String? ?? '';
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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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_loadInteraction();
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_subscribePlayer();
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}
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// ---------- 播放器 ----------
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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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// 本地已下载地址（127.0.0.1）原样播放；网络 m3u8 经本地代理走 1G 分片缓存
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_player.open(Media(LocalMediaServer.I.wrap(resolvePlayUrl(item))),
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play: true);
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}
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void _toggle() {
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_player.playOrPause();
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setState(() {
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_showPauseIcon = !_playing;
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_playing = !_playing;
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});
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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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// ---------- 倍速 ----------
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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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String get _rateLabel =>
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_rate == _rate.roundToDouble() ? '${_rate.toInt()}X' : '${_rate}X';
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// ---------- 互动 ----------
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Future<void> _loadInteraction() async {
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// 从后端拉当前视频的点赞/收藏状态
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try {
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final data = await VideoService.fetchDetail(_currentItem.videoId);
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if (!mounted) return;
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setState(() {
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_isLiked = (data['is_liked'] as bool?) ?? false;
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_isFavorited = (data['is_favorited'] as bool?) ?? false;
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_likeCount = (data['like_count'] as num?)?.toInt() ?? 0;
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_favoriteCount = (data['favorite_count'] as num?)?.toInt() ?? 0;
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_commentCount = (data['comment_count'] as num?)?.toInt() ?? 0;
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});
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} catch (_) {
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// 游客或未登录时忽略，用默认值
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}
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}
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void _onLike() {
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if (!ref.read(authProvider).isLoggedIn) {
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context.go('/login');
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return;
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}
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setState(() {
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_isLiked = !_isLiked;
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_likeCount = _isLiked ? _likeCount + 1 : _likeCount - 1;
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});
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VideoService.toggleLike(_currentItem.videoId).catchError((_) {
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setState(() {
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_isLiked = !_isLiked;
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_likeCount = _isLiked ? _likeCount + 1 : _likeCount - 1;
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});
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return <String, dynamic>{};
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});
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}
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void _onFavorite() {
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if (!ref.read(authProvider).isLoggedIn) {
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context.go('/login');
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return;
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}
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setState(() {
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_isFavorited = !_isFavorited;
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_favoriteCount = _isFavorited ? _favoriteCount + 1 : _favoriteCount - 1;
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});
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VideoService.toggleFavorite(_currentItem.videoId).catchError((_) {
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setState(() {
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_isFavorited = !_isFavorited;
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_favoriteCount =
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_isFavorited ? _favoriteCount + 1 : _favoriteCount - 1;
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});
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return <String, dynamic>{};
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});
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}
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Future<void> _openComments() async {
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_player.pause();
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await showCommentSheet(
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context,
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videoId: _currentItem.videoId,
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onCountChanged: (delta) =>
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setState(() => _commentCount = (_commentCount + delta).clamp(0, 1 << 31)),
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);
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if (mounted) _player.play();
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}
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void _share() {
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Share.share(
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'${_currentItem.title}\n${_currentItem.videoUrl}',
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subject: _currentItem.title,
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);
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}
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// ---------- 系列 ----------
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Future<void> _loadSeries() async {
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final data = await VideoService.fetchVideoSeries(_currentItem.videoId);
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if (!mounted) return;
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setState(() => _seriesData = data);
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_initEpisodePage();
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}
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void _initEpisodePage() {
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if (!_hasSeries) return;
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final episodes = _episodes;
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if (episodes.isEmpty) return;
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_episodeItems = episodes.map((ep) {
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final m = ep as Map<String, dynamic>;
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return VideoItem(
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videoId: m['video_id'],
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title: m['title'] ?? '',
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coverUrl: m['cover_url'] ?? '',
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videoUrl: m['video_url'] ?? '',
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duration: (m['duration'] as num?)?.toInt() ?? 0,
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author: widget.item.author,
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);
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}).toList();
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_currentPage = _episodeItems.indexWhere(
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(e) => e.videoId == _currentItem.videoId,
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);
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if (_currentPage < 0) _currentPage = 0;
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_pageController = PageController(initialPage: _currentPage);
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}
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void _onPageChanged(int index) {
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if (index < 0 || index >= _episodeItems.length) return;
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_switchToEpisodeById(_episodeItems[index].videoId);
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}
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void _switchToEpisodeById(int videoId) {
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if (videoId == _currentItem.videoId) return;
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// 从 episodes 原始数据构造新 VideoItem
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final epData = _episodes.firstWhere(
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(e) => (e as Map)['video_id'] == videoId,
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orElse: () => null,
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) as Map<String, dynamic>?;
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if (epData == null) return;
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final newItem = VideoItem(
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videoId: videoId,
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title: epData['title'] ?? '',
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coverUrl: epData['cover_url'] ?? '',
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videoUrl: epData['video_url'] ?? '',
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duration: (epData['duration'] as num?)?.toInt() ?? 0,
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author: widget.item.author,
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);
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// 彻底销毁旧 Player，创建新 Player
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_posSub?.cancel();
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_durSub?.cancel();
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_player.dispose();
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setState(() {
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_player = Player();
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_controller = VideoController(_player);
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_currentItem = newItem;
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_position = Duration.zero;
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_duration = Duration.zero;
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_playing = true;
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_rate = 1.0;
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_open(newItem);
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});
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_subscribePlayer();
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_reportWatch();
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_loadSeries();
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_loadInteraction();
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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(_currentItem.videoId)) return;
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await dedup.markWatched(_currentItem.videoId);
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try {
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final result = await VideoService.reportWatch(_currentItem.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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// ---------- 长按 ----------
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void _onLongPress() {
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showModalBottomSheet<void>(
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context: context,
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backgroundColor: Colors.white,
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isScrollControlled: true,
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useSafeArea: true,
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shape: const RoundedRectangleBorder(
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borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
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),
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builder: (sheetContext) => Theme(
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// 弹窗是白底，APP 主题为暗色（默认白字），需显式套用亮色主题
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data: ThemeData.light(),
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child: Padding(
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padding: const EdgeInsets.fromLTRB(20, 20, 20, 12),
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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 + 当前倍速
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Row(
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children: [
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const Icon(Icons.speed, color: AppColors.primary, size: 20),
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const SizedBox(width: 6),
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const Text('倍速播放',
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style: TextStyle(
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fontSize: 15, fontWeight: FontWeight.w600)),
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const Spacer(),
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Text('当前 $_rateLabel',
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style: TextStyle(fontSize: 12, color: Colors.grey[600])),
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],
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),
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const SizedBox(height: 14),
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// 四档倍速：1X / 1.5X / 2X / 3X
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Row(
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children: [
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for (final r in _rates) ...[
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Expanded(
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child: GestureDetector(
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onTap: () {
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_setRate(r);
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Navigator.of(sheetContext).pop();
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},
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child: Container(
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height: 46,
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alignment: Alignment.center,
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decoration: BoxDecoration(
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color: (_rate - r).abs() < 0.01
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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: (_rate - r).abs() < 0.01
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? AppColors.primary
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: Colors.transparent,
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),
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borderRadius: BorderRadius.circular(8),
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),
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child: Text(
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r == r.roundToDouble()
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? '${r.toInt()}X'
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: '${r}X',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: (_rate - r).abs() < 0.01
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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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if (r != _rates.last) const SizedBox(width: 10),
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],
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],
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),
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const SizedBox(height: 16),
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const Divider(height: 1),
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// 分享
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ListTile(
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contentPadding: EdgeInsets.zero,
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leading: const Icon(Icons.share_outlined),
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title: const Text('分享'),
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onTap: () {
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Navigator.of(sheetContext).pop();
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_share();
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},
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),
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// 下载（已下载/下载中置灰；本地已下载视频不再重复下载）
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Builder(builder: (_) {
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final dm = ref.read(downloadManagerProvider);
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final downloaded =
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dm.items.any((e) => e.videoId == _currentItem.videoId);
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final downloading =
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dm.progress.containsKey(_currentItem.videoId);
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final isLocal = _currentItem.videoUrl.contains('127.0.0.1');
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return ListTile(
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contentPadding: EdgeInsets.zero,
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leading: Icon(downloaded || isLocal
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? Icons.check_circle_outline
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: Icons.download_outlined),
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title: Text(downloaded || isLocal
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? '已下载'
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: (downloading ? '下载中…' : '下载')),
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enabled: !downloaded && !downloading && !isLocal,
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onTap: () {
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Navigator.of(sheetContext).pop();
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showTopToast(context, '开始下载，可在「我的 → 已下载」查看');
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ref
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.read(downloadManagerProvider.notifier)
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.start(_currentItem)
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.catchError((_) {
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if (mounted) showTopToast(context, '下载失败，请重试');
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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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// ---------- 进度条 ----------
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/// 有效时长：流上报优先，异常（如被当直播 duration=0）回退到 DB 时长
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Duration get _effectiveDuration => _duration.inMilliseconds > 0
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? _duration
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: Duration(seconds: _currentItem.duration);
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double get _sliderValue {
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if (_seeking) return _seekValue;
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if (_effectiveDuration.inMilliseconds <= 0) return 0;
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return (_position.inMilliseconds / _effectiveDuration.inMilliseconds)
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.clamp(0.0, 1.0);
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}
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static String _fmtDuration(Duration d) {
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final h = d.inHours;
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final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
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final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
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return h > 0 ? '$h:$m:$s' : '$m:$s';
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}
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void _onSeekStart(double v) {
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setState(() {
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_seeking = true;
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_seekValue = v;
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});
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}
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void _onSeek(double v) {
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setState(() => _seekValue = v);
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}
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void _onSeekEnd(double v) {
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setState(() => _seeking = false);
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if (_effectiveDuration.inMilliseconds > 0) {
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final target = Duration(
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milliseconds: (v * _effectiveDuration.inMilliseconds).round(),
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);
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_player.seek(target);
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}
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}
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// ---------- 生命周期 ----------
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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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if (_hasSeries && _episodeItems.isNotEmpty) {
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_pageController.dispose();
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}
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super.dispose();
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}
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// ---------- 构建 ----------
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@override
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Widget build(BuildContext context) {
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// 互动栏 item（用当前播放的 item + 本地互动状态）
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final interactionItem = _currentItem.copyWith(
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isLiked: _isLiked,
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isFavorited: _isFavorited,
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likeCount: _likeCount,
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favoriteCount: _favoriteCount,
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commentCount: _commentCount,
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);
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final content = GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: _toggle,
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onDoubleTap: _onLike,
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onLongPress: _onLongPress,
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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,
|
|
controls: NoVideoControls,
|
|
fit: BoxFit.contain,
|
|
),
|
|
),
|
|
|
|
// 中央播放/暂停图标（短暂显示）
|
|
if (_showPauseIcon)
|
|
const IgnorePointer(
|
|
child: Center(
|
|
child: Icon(
|
|
Icons.play_circle_outline,
|
|
size: 72,
|
|
color: Colors.white70,
|
|
),
|
|
),
|
|
),
|
|
|
|
// 底部渐变（提升文字可读性）
|
|
const Positioned(
|
|
left: 0, right: 0, bottom: 0, height: 200,
|
|
child: IgnorePointer(
|
|
child: DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
gradient: LinearGradient(
|
|
begin: Alignment.topCenter,
|
|
end: Alignment.bottomCenter,
|
|
colors: [Colors.transparent, Colors.black54],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
|
|
// ---------- 顶部：返回 + 倍速 ----------
|
|
SafeArea(
|
|
child: Row(
|
|
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
|
children: [
|
|
const BackButton(color: Colors.white),
|
|
// 倍速按钮
|
|
GestureDetector(
|
|
onTap: _onLongPress,
|
|
child: Container(
|
|
margin: const EdgeInsets.only(right: 16),
|
|
padding: const EdgeInsets.symmetric(
|
|
horizontal: 10, vertical: 4),
|
|
decoration: BoxDecoration(
|
|
color: Colors.black45,
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: Text(
|
|
_rateLabel,
|
|
style: const TextStyle(
|
|
color: Colors.white,
|
|
fontSize: 13,
|
|
fontWeight: FontWeight.w600,
|
|
),
|
|
),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
|
|
// ---------- 右侧互动栏 ----------
|
|
Positioned(
|
|
right: 8, bottom: 96,
|
|
child: InteractionBar(
|
|
item: interactionItem,
|
|
onLike: (_) => _onLike(),
|
|
onFavorite: (_) => _onFavorite(),
|
|
onComment: (_) => _openComments(),
|
|
),
|
|
),
|
|
|
|
// ---------- 左下信息区 ----------
|
|
Positioned(
|
|
left: 12, right: 88, bottom: 24,
|
|
child: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
// 系列标题（当前视频属于系列时显示，点击弹出系列列表）
|
|
if (_hasSeries)
|
|
GestureDetector(
|
|
onTap: _showSeriesSheet,
|
|
child: Container(
|
|
margin: const EdgeInsets.only(bottom: 8),
|
|
padding: const EdgeInsets.symmetric(
|
|
horizontal: 10, vertical: 6),
|
|
decoration: BoxDecoration(
|
|
color: Colors.black54,
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: Row(
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
const Icon(Icons.playlist_play,
|
|
color: Colors.white, size: 16),
|
|
const SizedBox(width: 4),
|
|
Text(
|
|
_seriesTitle,
|
|
style: const TextStyle(
|
|
color: Colors.white,
|
|
fontSize: 13,
|
|
fontWeight: FontWeight.w600,
|
|
),
|
|
),
|
|
const SizedBox(width: 2),
|
|
const Icon(Icons.chevron_right,
|
|
color: Colors.white, size: 14),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
// 视频信息（昵称/标题/描述/标签）
|
|
VideoInfoSection(item: _currentItem),
|
|
],
|
|
),
|
|
),
|
|
|
|
// ---------- 进度条：抖音风格一条细线 + 时间刻度 ----------
|
|
Positioned(
|
|
left: 0, right: 0, bottom: 0,
|
|
child: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
// 时间刻度：左当前（拖动时为目标位置），右总时长
|
|
Padding(
|
|
padding:
|
|
const EdgeInsets.symmetric(horizontal: 14, vertical: 2),
|
|
child: Row(
|
|
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
|
children: [
|
|
Text(
|
|
_fmtDuration(_seeking
|
|
? Duration(
|
|
milliseconds: (_seekValue *
|
|
_effectiveDuration.inMilliseconds)
|
|
.round())
|
|
: _position),
|
|
style: const TextStyle(
|
|
color: Colors.white70, fontSize: 11),
|
|
),
|
|
Text(
|
|
_fmtDuration(_effectiveDuration),
|
|
style: const TextStyle(
|
|
color: Colors.white70, fontSize: 11),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
_ThinProgressBar(
|
|
value: _sliderValue,
|
|
onChanged: _onSeek,
|
|
onChangeStart: _onSeekStart,
|
|
onChangeEnd: _onSeekEnd,
|
|
totalMs: _effectiveDuration.inMilliseconds,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
|
|
// 系列视频：用 PageView 支持上下划切换集数
|
|
if (_hasSeries && _episodeItems.isNotEmpty) {
|
|
return Scaffold(
|
|
backgroundColor: Colors.black,
|
|
body: PageView.builder(
|
|
controller: _pageController,
|
|
scrollDirection: Axis.vertical,
|
|
itemCount: _episodeItems.length,
|
|
onPageChanged: _onPageChanged,
|
|
itemBuilder: (_, index) {
|
|
if (index == _currentPage) return content;
|
|
return Container(
|
|
color: Colors.black,
|
|
child: Center(
|
|
child: Text(
|
|
_episodeItems[index].title,
|
|
style: const TextStyle(color: Colors.white38),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
// 非系列视频：直接渲染
|
|
return Scaffold(
|
|
backgroundColor: Colors.black,
|
|
body: content,
|
|
);
|
|
}
|
|
|
|
// ---------- 系列列表弹窗 ----------
|
|
|
|
void _showSeriesSheet() {
|
|
showModalBottomSheet<void>(
|
|
context: context,
|
|
backgroundColor: Colors.white,
|
|
isScrollControlled: true,
|
|
useSafeArea: true,
|
|
shape: const RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
|
|
),
|
|
builder: (_) => Theme(
|
|
data: ThemeData.light(),
|
|
child: DraggableScrollableSheet(
|
|
initialChildSize: 0.6,
|
|
minChildSize: 0.4,
|
|
maxChildSize: 0.9,
|
|
expand: false,
|
|
builder: (_, controller) => Column(
|
|
children: [
|
|
Container(
|
|
margin: const EdgeInsets.only(top: 12),
|
|
width: 40, height: 4,
|
|
decoration: BoxDecoration(
|
|
color: Colors.grey[300],
|
|
borderRadius: BorderRadius.circular(2),
|
|
),
|
|
),
|
|
Padding(
|
|
padding: const EdgeInsets.all(16),
|
|
child: Row(
|
|
children: [
|
|
Expanded(
|
|
child: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
Text(
|
|
_seriesTitle,
|
|
style: const TextStyle(
|
|
fontSize: 16, fontWeight: FontWeight.w600),
|
|
maxLines: 1, overflow: TextOverflow.ellipsis,
|
|
),
|
|
const SizedBox(height: 2),
|
|
Text(
|
|
'共 ${_episodes.length} 集',
|
|
style: TextStyle(
|
|
fontSize: 12, color: Colors.grey[600]),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
const Divider(height: 1),
|
|
Expanded(
|
|
child: ListView.builder(
|
|
controller: controller,
|
|
itemCount: _episodes.length,
|
|
itemBuilder: (_, i) {
|
|
final ep = _episodes[i] as Map<String, dynamic>;
|
|
final isCurrent = ep['video_id'] == _currentItem.videoId;
|
|
return ListTile(
|
|
leading: Container(
|
|
width: 40, height: 40,
|
|
alignment: Alignment.center,
|
|
decoration: BoxDecoration(
|
|
color: isCurrent
|
|
? AppColors.primary.withValues(alpha: 0.15)
|
|
: Colors.grey[100],
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: Text(
|
|
'${ep['episode_no'] ?? i + 1}',
|
|
style: TextStyle(
|
|
fontWeight: FontWeight.w700,
|
|
color: isCurrent
|
|
? AppColors.primary
|
|
: Colors.black87,
|
|
),
|
|
),
|
|
),
|
|
title: Text(
|
|
ep['title'] as String? ?? '',
|
|
maxLines: 1, overflow: TextOverflow.ellipsis,
|
|
style: TextStyle(
|
|
fontSize: 14,
|
|
fontWeight: isCurrent
|
|
? FontWeight.w600
|
|
: FontWeight.normal,
|
|
color: isCurrent
|
|
? AppColors.primary
|
|
: Colors.black87,
|
|
),
|
|
),
|
|
trailing: isCurrent
|
|
? const Icon(Icons.play_circle_filled,
|
|
color: AppColors.primary, size: 20)
|
|
: null,
|
|
onTap: () {
|
|
Navigator.of(context).pop();
|
|
_switchToEpisodeById(ep['video_id'] as int);
|
|
},
|
|
);
|
|
},
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
/// 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），
|
|
/// 拖动时自动变厚显示 thumb，松开后恢复细线。
|
|
class _ThinProgressBar extends StatefulWidget {
|
|
const _ThinProgressBar({
|
|
required this.value,
|
|
required this.onChanged,
|
|
required this.onChangeStart,
|
|
required this.onChangeEnd,
|
|
this.totalMs = 0,
|
|
});
|
|
|
|
final double value;
|
|
final ValueChanged<double> onChanged;
|
|
final ValueChanged<double> onChangeStart;
|
|
final ValueChanged<double> onChangeEnd;
|
|
|
|
/// 视频总时长（毫秒）：拖动时气泡显示目标位置用时/分/秒
|
|
final int totalMs;
|
|
|
|
@override
|
|
State<_ThinProgressBar> createState() => _ThinProgressBarState();
|
|
}
|
|
|
|
/// 拖动气泡时间：>1 小时显示 x时xx分xx秒，否则 xx分xx秒
|
|
String _seekBubbleText(double value, int totalMs) {
|
|
final d = Duration(milliseconds: (value * totalMs).round());
|
|
final h = d.inHours;
|
|
final m = d.inMinutes.remainder(60).toString().padLeft(2, '0');
|
|
final s = d.inSeconds.remainder(60).toString().padLeft(2, '0');
|
|
return h > 0 ? '$h时$m分$s秒' : '$m分$s秒';
|
|
}
|
|
|
|
class _ThinProgressBarState extends State<_ThinProgressBar> {
|
|
bool _dragging = false;
|
|
double _dragValue = 0;
|
|
|
|
void _start(Offset local, double width) {
|
|
setState(() => _dragging = true);
|
|
widget.onChangeStart(widget.value);
|
|
_update(local, width);
|
|
}
|
|
|
|
void _update(Offset local, double width) {
|
|
final v = (local.dx / width).clamp(0.0, 1.0);
|
|
_dragValue = v;
|
|
widget.onChanged(v);
|
|
}
|
|
|
|
void _end(double width) {
|
|
setState(() => _dragging = false);
|
|
final v = _dragValue.clamp(0.0, 1.0);
|
|
widget.onChangeEnd(v);
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return LayoutBuilder(
|
|
builder: (_, constraints) {
|
|
final w = constraints.maxWidth;
|
|
return GestureDetector(
|
|
behavior: HitTestBehavior.opaque,
|
|
onHorizontalDragStart: (d) => _start(d.localPosition, w),
|
|
onHorizontalDragUpdate: (d) => _update(d.localPosition, w),
|
|
onHorizontalDragEnd: (_) => _end(w),
|
|
onTapDown: (d) {
|
|
setState(() => _dragging = true);
|
|
_start(d.localPosition, w);
|
|
},
|
|
onTapUp: (_) => _end(w),
|
|
child: SizedBox(
|
|
height: 32, // 触摸热区 32px（比视觉线条大，提升交互）
|
|
child: Stack(
|
|
clipBehavior: Clip.none,
|
|
alignment: Alignment.bottomCenter,
|
|
children: [
|
|
Align(
|
|
alignment: Alignment.bottomCenter,
|
|
child: AnimatedContainer(
|
|
duration: const Duration(milliseconds: 150),
|
|
height: _dragging ? 4 : 2,
|
|
width: double.infinity,
|
|
child: CustomPaint(
|
|
painter: _ProgressPainter(
|
|
value: _dragging ? _dragValue : widget.value,
|
|
dragging: _dragging,
|
|
),
|
|
),
|
|
),
|
|
),
|
|
// 拖动中的时间气泡（跟随 thumb，两端自动夹在屏内）
|
|
if (_dragging && widget.totalMs > 0)
|
|
Positioned(
|
|
bottom: 14,
|
|
left: (_dragValue * w - 38)
|
|
.clamp(0.0, (w - 76).clamp(0.0, w)),
|
|
child: Container(
|
|
width: 76,
|
|
height: 24,
|
|
alignment: Alignment.center,
|
|
decoration: BoxDecoration(
|
|
color: Colors.black.withValues(alpha: 0.82),
|
|
borderRadius: BorderRadius.circular(6),
|
|
),
|
|
child: Text(
|
|
_seekBubbleText(_dragValue, widget.totalMs),
|
|
style: const TextStyle(
|
|
color: Colors.white, fontSize: 11.5),
|
|
),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
},
|
|
);
|
|
}
|
|
}
|
|
|
|
class _ProgressPainter extends CustomPainter {
|
|
_ProgressPainter({required this.value, required this.dragging});
|
|
|
|
final double value;
|
|
final bool dragging;
|
|
|
|
@override
|
|
void paint(Canvas canvas, Size size) {
|
|
final w = size.width;
|
|
final h = size.height;
|
|
final y = h / 2;
|
|
|
|
// 背景（未播放）
|
|
final bgPaint = Paint()
|
|
..color = Colors.white.withValues(alpha: 0.2)
|
|
..strokeWidth = h
|
|
..strokeCap = StrokeCap.round;
|
|
canvas.drawLine(Offset(0, y), Offset(w, y), bgPaint);
|
|
|
|
// 已播放
|
|
final fgPaint = Paint()
|
|
..color = Colors.white
|
|
..strokeWidth = h
|
|
..strokeCap = StrokeCap.round;
|
|
final playedX = (w * value).clamp(0.0, w);
|
|
canvas.drawLine(Offset(0, y), Offset(playedX, y), fgPaint);
|
|
|
|
// 拖动时显示 thumb
|
|
if (dragging) {
|
|
final thumbPaint = Paint()
|
|
..color = Colors.white
|
|
..style = PaintingStyle.fill;
|
|
canvas.drawCircle(Offset(playedX, y), 6, thumbPaint);
|
|
}
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant _ProgressPainter oldDelegate) =>
|
|
oldDelegate.value != value || oldDelegate.dragging != dragging;
|
|
}
|