415 lines
13 KiB
Dart
415 lines
13 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:video_player/video_player.dart';
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import 'package:open_filex/open_filex.dart';
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import 'package:flutter/gestures.dart';
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class MediaItem {
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final String path;
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final bool isVideo;
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MediaItem({required this.path, required this.isVideo});
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}
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class MediaViewer extends StatefulWidget {
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final List<MediaItem> items;
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final int initialIndex;
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const MediaViewer({super.key, required this.items, this.initialIndex = 0});
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@override
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State<MediaViewer> createState() => _MediaViewerState();
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}
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class _MediaViewerState extends State<MediaViewer> {
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late PageController _pageController;
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VideoPlayerController? _videoController;
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String? _videoInitError;
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final FocusNode _focusNode = FocusNode();
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int _index = 0;
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bool _uiVisible = true;
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bool _isLandscape = false;
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@override
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void initState() {
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super.initState();
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_index = widget.initialIndex;
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_pageController = PageController(initialPage: _index);
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print("MediaViewer: Initial index set to $_index");
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print("MediaViewer: Total items = ${widget.items.length}");
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print(
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"MediaViewer: Initial media item = ${widget.items[_index].path}, isVideo = ${widget.items[_index].isVideo}",
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);
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_hideSystemUI();
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_initVideoIfNeeded(_index);
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_focusNode.requestFocus();
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}
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void _handleKeyEvent(KeyEvent event) {
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if (event is! KeyDownEvent) return;
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final item = widget.items[_index];
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if (!item.isVideo ||
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_videoController == null ||
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!_videoController!.value.isInitialized)
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return;
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final c = _videoController!;
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if (event.logicalKey == LogicalKeyboardKey.space) {
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setState(() {
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c.value.isPlaying ? c.pause() : c.play();
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});
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} else if (event.logicalKey == LogicalKeyboardKey.arrowLeft) {
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final currentPos = c.value.position;
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final newPos = currentPos - const Duration(seconds: 5);
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c.seekTo(newPos < Duration.zero ? Duration.zero : newPos);
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} else if (event.logicalKey == LogicalKeyboardKey.arrowRight) {
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final currentPos = c.value.position;
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final maxDur = c.value.duration;
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final newPos = currentPos + const Duration(seconds: 5);
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c.seekTo(newPos > maxDur ? maxDur : newPos);
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}
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}
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Future<void> _initVideoIfNeeded(int index) async {
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_videoController?.removeListener(_videoListener);
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_videoController?.dispose();
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_videoController = null;
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_videoInitError = null;
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final item = widget.items[index];
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if (!item.isVideo) return;
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final controller = VideoPlayerController.file(File(item.path));
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_videoController = controller;
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try {
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await controller.initialize();
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_videoController!.addListener(_videoListener);
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controller.setLooping(false);
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controller.play();
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_videoInitError = null;
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} catch (e) {
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_videoInitError = e.toString();
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_videoController?.removeListener(_videoListener);
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await _videoController?.dispose().catchError((_) {});
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_videoController = null;
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} finally {
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if (mounted) setState(() {});
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}
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}
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void _videoListener() {
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if (mounted) {
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setState(() {});
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}
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}
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void _hideSystemUI() {
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if (Platform.isAndroid || Platform.isIOS) {
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SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
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}
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}
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void _showSystemUI() {
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if (Platform.isAndroid || Platform.isIOS) {
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SystemChrome.setEnabledSystemUIMode(
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SystemUiMode.manual,
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overlays: SystemUiOverlay.values,
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);
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}
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}
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void _toggleOrientation() {
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setState(() {
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_isLandscape = !_isLandscape;
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});
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if (_isLandscape) {
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SystemChrome.setPreferredOrientations([
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DeviceOrientation.landscapeLeft,
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DeviceOrientation.landscapeRight,
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]);
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} else {
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SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
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}
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}
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@override
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void dispose() {
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_videoController?.removeListener(_videoListener);
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_videoController?.dispose();
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_pageController.dispose();
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_showSystemUI();
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SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
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super.dispose();
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}
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void _toggleUI() {
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setState(() => _uiVisible = !_uiVisible);
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}
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String _format(Duration d) {
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String two(int n) => n.toString().padLeft(2, '0');
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return "${two(d.inMinutes.remainder(60))}:${two(d.inSeconds.remainder(60))}";
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}
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@override
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Widget build(BuildContext context) {
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final isVideoReady = widget.items[_index].isVideo &&
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_videoController != null &&
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_videoController!.value.isInitialized;
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return Scaffold(
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backgroundColor: Colors.black,
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body: KeyboardListener(
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focusNode: _focusNode,
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autofocus: true,
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onKeyEvent: _handleKeyEvent,
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child: SafeArea(
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child: GestureDetector(
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onTap: _toggleUI,
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onLongPress: () {
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if (isVideoReady) {
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final currentSpeed = _videoController!.value.playbackSpeed;
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_videoController!.setPlaybackSpeed(
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currentSpeed == 1.0 ? 2.0 : 1.0,
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);
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}
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},
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behavior: HitTestBehavior.opaque,
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child: Stack(
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children: [
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// MEDIA PAGES
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Positioned.fill(
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child: ScrollConfiguration(
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behavior: ScrollConfiguration.of(context).copyWith(
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dragDevices: {
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PointerDeviceKind.touch,
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PointerDeviceKind.mouse,
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PointerDeviceKind.trackpad,
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},
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),
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child: PageView.builder(
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controller: _pageController,
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onPageChanged: (i) async {
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setState(() => _index = i);
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await _initVideoIfNeeded(i);
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},
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itemCount: widget.items.length,
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itemBuilder: (context, i) {
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final item = widget.items[i];
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if (item.isVideo) {
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if (_videoInitError != null) {
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return _buildVideoInitErrorFallback(item.path);
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}
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if (_videoController == null ||
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!_videoController!.value.isInitialized) {
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return const Center(
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child: CircularProgressIndicator(
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color: Colors.white,
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),
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);
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}
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return Center(
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child: AspectRatio(
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aspectRatio: _videoController!.value.aspectRatio,
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child: VideoPlayer(_videoController!),
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),
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);
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}
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return Center(
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child: InteractiveViewer(
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maxScale: 4.0,
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child: Image.file(
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File(item.path),
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fit: BoxFit.contain,
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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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// ЦЕНТРАЛЬНАЯ КНОПКА ПЛЕЙ/ПАУЗА
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if (_uiVisible && isVideoReady)
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Center(
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child: Container(
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decoration: const BoxDecoration(
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color: Colors.black38,
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shape: BoxShape.circle,
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),
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child: IconButton(
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iconSize: 64,
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icon: Icon(
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_videoController!.value.isPlaying
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? Icons.pause
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: Icons.play_arrow,
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color: Colors.white,
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),
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onPressed: () {
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setState(() {
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_videoController!.value.isPlaying
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? _videoController!.pause()
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: _videoController!.play();
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});
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},
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),
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),
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),
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// TOP BAR
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if (_uiVisible)
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Positioned(
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top: 10,
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left: 16,
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right: 16,
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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IconButton(
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icon: const Icon(
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Icons.close,
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color: Colors.white,
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size: 28,
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),
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onPressed: () => Navigator.pop(context),
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),
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IconButton(
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icon: const Icon(
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Icons.screen_rotation,
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color: Colors.white,
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size: 26,
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),
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onPressed: _toggleOrientation,
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),
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],
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),
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),
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// VIDEO CONTROLS
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if (_uiVisible && isVideoReady)
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Positioned(
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bottom: 10,
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left: 16,
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right: 16,
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child: _buildVideoControls(),
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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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Widget _buildVideoControls() {
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final c = _videoController!;
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final pos = c.value.position;
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final dur = c.value.duration;
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final posMs = pos.inMilliseconds.toDouble();
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final maxMs = dur.inMilliseconds
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.toDouble()
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.clamp(1, double.infinity)
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.toDouble();
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return Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
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decoration: BoxDecoration(
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color: Colors.black54,
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borderRadius: BorderRadius.circular(30),
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),
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child: Row(
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children: [
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IconButton(
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icon: Icon(
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c.value.isPlaying ? Icons.pause : Icons.play_arrow,
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color: Colors.white,
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size: 28,
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),
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onPressed: () {
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setState(() {
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c.value.isPlaying ? c.pause() : c.play();
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});
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},
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),
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Expanded(
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child: SliderTheme(
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data: SliderTheme.of(context).copyWith(
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trackHeight: 4,
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activeTrackColor: Colors.white60,
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inactiveTrackColor: Colors.white30,
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thumbColor: Colors.white,
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thumbShape: const RoundSliderThumbShape(enabledThumbRadius: 6),
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overlayColor: Colors.transparent,
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),
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child: Slider(
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value: posMs.clamp(0, maxMs),
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min: 0,
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max: maxMs,
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onChanged: (v) {
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c.seekTo(Duration(milliseconds: v.toInt()));
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},
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),
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),
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),
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const SizedBox(width: 8),
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Text(
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"${_format(pos)} / ${_format(dur)}",
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style: const TextStyle(
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color: Colors.white,
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fontSize: 12,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(width: 8),
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],
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),
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);
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}
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Widget _buildVideoInitErrorFallback(String path) {
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return Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const Icon(Icons.play_disabled, color: Colors.white70, size: 56),
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const SizedBox(height: 10),
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const Text(
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'Видео не воспроизводится на этом устройстве',
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textAlign: TextAlign.center,
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style: TextStyle(color: Colors.white70),
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),
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const SizedBox(height: 10),
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OutlinedButton.icon(
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onPressed: () async {
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try {
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await OpenFilex.open(path);
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} catch (_) {}
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},
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icon: const Icon(Icons.open_in_new, color: Colors.white70),
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label: const Text(
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'Открыть внешним плеером',
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style: TextStyle(color: Colors.white70),
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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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} |