124 lines
3.2 KiB
Dart
124 lines
3.2 KiB
Dart
import 'dart:async';
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import 'dart:io' show File;
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import 'package:flutter/foundation.dart' show kIsWeb;
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import 'package:flutter/material.dart';
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import 'package:video_player/video_player.dart';
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import '../../../common/widgets/app_network_image.dart';
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import '../data/ads_api_client.dart';
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/// 统一渲染广告图片/GIF/视频；开屏可优先使用已缓存的本地素材。
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class AdMedia extends StatefulWidget {
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const AdMedia({
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super.key,
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required this.ad,
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this.assetPath,
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this.fit = BoxFit.cover,
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});
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final AdCreative ad;
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final String? assetPath;
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final BoxFit fit;
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@override
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State<AdMedia> createState() => _AdMediaState();
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}
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class _AdMediaState extends State<AdMedia> {
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VideoPlayerController? player;
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bool ready = false, failed = false;
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@override
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void initState() {
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super.initState();
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_load();
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}
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@override
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void didUpdateWidget(covariant AdMedia old) {
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super.didUpdateWidget(old);
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if (old.ad.adId != widget.ad.adId || old.assetPath != widget.assetPath) {
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unawaited(player?.dispose() ?? Future.value());
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player = null;
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ready = false;
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failed = false;
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_load();
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}
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}
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void _load() {
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if (widget.ad.mediaType != AdMediaType.video) return;
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final uri = widget.ad.mediaUri;
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if (uri == null) return;
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final path = widget.assetPath;
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final controller = !kIsWeb && path != null && path.isNotEmpty
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? VideoPlayerController.file(File(path))
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: VideoPlayerController.networkUrl(uri);
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player = controller;
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unawaited(
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controller
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.initialize()
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.then((_) async {
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await controller.setLooping(true);
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await controller.setVolume(0);
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await controller.play();
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if (mounted) setState(() => ready = true);
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})
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.catchError((_) {
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if (mounted) setState(() => failed = true);
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}),
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);
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}
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@override
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void dispose() {
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player?.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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if (widget.ad.mediaType != AdMediaType.video) {
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final path = widget.assetPath;
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if (!kIsWeb && path != null && path.isNotEmpty) {
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return Image.file(
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File(path),
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fit: widget.fit,
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width: double.infinity,
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height: double.infinity,
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errorBuilder: (_, _, _) => _error(),
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);
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}
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return AppNetworkImage(
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imageUrl: widget.ad.imageUrl,
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fit: widget.fit,
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width: double.infinity,
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height: double.infinity,
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errorWidget: _error(),
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);
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}
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final c = player;
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if (failed) return _error();
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if (c == null || !ready) {
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return const ColoredBox(
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color: Color(0xFF161616),
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child: Center(child: CircularProgressIndicator()),
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);
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}
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return FittedBox(
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fit: widget.fit,
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clipBehavior: Clip.hardEdge,
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child: SizedBox(
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width: c.value.size.width,
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height: c.value.size.height,
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child: VideoPlayer(c),
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),
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);
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}
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Widget _error() => const ColoredBox(
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color: Color(0xFF161616),
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child: Center(
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child: Icon(Icons.broken_image_outlined, color: Colors.white54),
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),
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);
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}
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