浅念
8741bded7f
根因：保存成功/失败的 SnackBar 弹在弹层底下的页面 Scaffold 上，被模态 bottom sheet + 遮罩整层盖住，用户永远看不到（保存本身大概率成功）。 - 成功：下载按钮翻成功态（✓+已保存到相册，kColorSuccess）2.5s 自动复原 - 失败：按钮下方弹层内红字留置可重试（对齐隐藏照片弹层面板内提示模式） - 删除被遮挡的 SnackBar 路径；复原 Timer 于 dispose 取消 Co-Authored-By: Claude Code <noreply@anthropic.com>
657 lines
25 KiB
Dart
657 lines
25 KiB
Dart
/// 相册分享页（UI-06 重设计：三种分享方式，用户需求 2026-09-23）。
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///
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/// 1. 卡片模式（默认）：系统分享面板（share_plus）——微信 / 手机上其他应用，
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/// 分享文本 = 相册标题 + 观众链接；
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/// 2. 生成二维码：弹出**二维码海报**（顶部宣传图 → 活动标题 / 时间 / 地址 /
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/// 二维码），可**下载海报图**到相册（gal，RepaintBoundary 渲染 3x PNG）；
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/// 3. 复制链接。
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/// 相册未公开时琥珀提示明确「该链接目前无法公开浏览」；URL 文本可长按复制。
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library;
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import 'dart:async';
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import 'dart:ui' as ui;
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import 'package:dio/dio.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:fluwx/fluwx.dart';
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import 'package:gal/gal.dart';
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import 'package:qr_flutter/qr_flutter.dart';
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import 'package:share_plus/share_plus.dart';
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import 'package:url_launcher/url_launcher.dart';
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import '../core/api_client.dart';
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import '../core/config.dart';
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import '../features/albums/album_format.dart';
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import '../features/albums/models.dart';
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import '../l10n/app_localizations.dart';
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import '../ui/components/photo_thumbnail.dart';
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import '../ui/components/segment_tabs.dart';
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import '../ui/tokens.dart';
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/// 外链打开注入点（生产=url_launcher；测试 override）。
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typedef UrlLauncher = Future<bool> Function(String url);
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/// 观众分享链接语言参数（viewer i18n 仅认 zh-CN/en；App locale 前缀映射）。
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String shareLangParam(String localeName) =>
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localeName.toLowerCase().startsWith('zh') ? 'zh-CN' : 'en';
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/// 分享链接（二维码 / 复制 / 系统分享同一 URL）。
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String shareAlbumUrl(Album album, String localeName) =>
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ApiConfig.viewerAlbumUrl(
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album.publicToken,
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lang: shareLangParam(localeName),
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);
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/// Provider：外部浏览器打开 URL。
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final urlLauncherProvider = Provider<UrlLauncher>(
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(ref) =>
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(url) => launchUrl(Uri.parse(url), mode: LaunchMode.externalApplication),
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);
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/// 分享请求（卡片字段：微信 SDK 用全集；系统分享回退用 title+url）。
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class ShareCardRequest {
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const ShareCardRequest({
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required this.title,
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required this.description,
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required this.url,
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this.thumbnailUrl,
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});
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final String title;
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final String description;
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final String url;
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/// 卡片缩略图（封面 URL；null=无图，微信显示默认图标）。
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final String? thumbnailUrl;
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}
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/// 分享注入点（生产：微信已配置且安装→WXWebpage 卡片；否则系统分享面板。
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/// 测试 override）。
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typedef ShareLauncher = Future<void> Function(ShareCardRequest card);
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final shareLauncherProvider = Provider<ShareLauncher>(
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(ref) => (card) async {
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const wechatAppId = String.fromEnvironment('WECHAT_APPID');
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if (wechatAppId.isNotEmpty && await Fluwx().isWeChatInstalled) {
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final thumb = await compressShareThumbnail(card.thumbnailUrl);
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await Fluwx().share(
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WeChatShareWebPageModel(
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card.url,
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title: card.title,
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description: card.description,
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thumbData: thumb,
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scene: WeChatScene.session,
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),
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);
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return;
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}
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// 回退：系统分享面板（文本=标题+链接；接收应用自行渲染链接）。
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// share_plus 11：SharePlus.instance.share（旧 Share.share 已废弃）。
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await SharePlus.instance.share(
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ShareParams(text: '${card.title}\n${card.url}', subject: card.title),
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);
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},
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);
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/// 微信卡片缩略图：下载→缩到 240px→PNG（微信 thumbData 限制 ≤32KB）。
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Future<Uint8List?> compressShareThumbnail(String? url) async {
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if (url == null) return null;
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try {
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final resp = await Dio().get<List<int>>(
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url,
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options: Options(responseType: ResponseType.bytes),
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);
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final data = Uint8List.fromList(resp.data!);
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final codec = await ui.instantiateImageCodec(data, targetWidth: 240);
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final frame = await codec.getNextFrame();
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final resized = await frame.image.toByteData(
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format: ui.ImageByteFormat.png,
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);
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return resized?.buffer.asUint8List();
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} on Object {
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// 缩略图失败不阻塞分享（无图卡片仍可发）
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return null;
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}
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}
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/// 海报保存相册注入点（生产=gal；测试 override）。
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typedef PosterSaver = Future<void> Function(ui.Image image);
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final posterSaverProvider = Provider<PosterSaver>(
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(ref) => (image) async {
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final bytes = await image.toByteData(format: ui.ImageByteFormat.png);
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if (bytes == null) throw StateError('poster encode failed');
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await Gal.putImageBytes(bytes.buffer.asUint8List());
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},
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);
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/// 观众分享页（三方式：系统分享卡片 / 二维码海报 / 复制链接）。
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class ShareQrPage extends ConsumerWidget {
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const ShareQrPage({required this.album, super.key});
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final Album album;
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Future<void> _copy(BuildContext context, String url) async {
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await Clipboard.setData(ClipboardData(text: url));
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if (!context.mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(AppLocalizations.of(context).copiedToClipboard)),
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);
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}
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Future<void> _shareToApps(
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BuildContext context,
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WidgetRef ref,
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String url,
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String title,
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) async {
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final l10n = AppLocalizations.of(context);
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final localeName = l10n.localeName;
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final start = formatAlbumDateTime(
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album.startAt,
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album.timezone,
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localeName,
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);
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final end = album.endAt == null
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? null
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: formatAlbumDateTime(album.endAt!, album.timezone, localeName);
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final dateRange = end == null ? start : '$start ~ $end';
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final venue = albumDisplayVenue(album, localeName);
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final description = venue == null ? dateRange : '$dateRange · $venue';
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// 缩略图用封面（列表即有签名 URL，减少一次串行请求）。
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await ref.read(shareLauncherProvider)(
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ShareCardRequest(
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title: title,
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description: description,
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url: url,
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thumbnailUrl: album.cover?.url,
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),
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);
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}
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final l10n = AppLocalizations.of(context);
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final theme = Theme.of(context);
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final localeName = l10n.localeName;
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final url = shareAlbumUrl(album, localeName);
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final title = albumDisplayTitle(album, localeName);
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final venue = albumDisplayVenue(album, localeName);
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final start = formatAlbumDateTime(
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album.startAt,
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album.timezone,
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localeName,
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);
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final end = album.endAt == null
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? null
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: formatAlbumDateTime(album.endAt!, album.timezone, localeName);
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final dateRange = end == null ? start : '$start ~ $end';
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final meta = venue == null ? dateRange : '$dateRange · $venue';
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return Scaffold(
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appBar: AppBar(title: Text(l10n.shareAlbum)),
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body: SingleChildScrollView(
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child: Center(
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 480),
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child: Card(
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margin: const EdgeInsets.all(kSpace16),
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child: Padding(
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padding: const EdgeInsets.all(kSpace16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// 相册信息（封面 + 标题 + meta）。
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ClipRRect(
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borderRadius: BorderRadius.circular(kRadiusInput),
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child: PhotoThumbnail(
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url: album.cover?.url,
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aspectRatio: 16 / 9,
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maxCacheWidth: 600,
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),
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),
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const SizedBox(height: kSpace16),
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Text(
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title,
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textAlign: TextAlign.center,
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style: theme.textTheme.titleLarge,
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),
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const SizedBox(height: kSpace4),
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Text(
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meta,
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textAlign: TextAlign.center,
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.colorScheme.onSurfaceVariant,
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),
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),
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if (!album.publicEnabled) ...[
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const SizedBox(height: kSpace12),
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Container(
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padding: const EdgeInsets.all(kSpace12),
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decoration: BoxDecoration(
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color: theme.brightness == Brightness.light
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? kColorWaiting.withValues(alpha: 0.12)
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: kColorWaitingDark.withValues(alpha: 0.12),
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borderRadius: BorderRadius.circular(kRadiusBadge),
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),
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child: Row(
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children: [
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Icon(
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Icons.warning_amber_rounded,
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size: 18,
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color: theme.brightness == Brightness.light
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? kColorWaiting
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: kColorWaitingDark,
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),
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const SizedBox(width: kSpace8),
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Expanded(
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child: Text(
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l10n.shareNotPublic,
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.brightness == Brightness.light
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? kColorWaiting
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: kColorWaitingDark,
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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 SizedBox(height: kSpace24),
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// ── 方式 1：卡片模式（默认）——系统分享面板 ──
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FilledButton.icon(
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onPressed: () => _shareToApps(context, ref, url, title),
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icon: const Icon(Icons.share_outlined, size: 18),
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label: Text(l10n.shareCardMode),
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),
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const SizedBox(height: kSpace8),
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// ── 方式 2：生成二维码（弹出海报）──
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OutlinedButton.icon(
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onPressed: () => _openPoster(context),
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icon: const Icon(Icons.qr_code_2, size: 20),
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label: Text(l10n.sharePosterMode),
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),
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const SizedBox(height: kSpace8),
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// ── 方式 3：复制链接 ──
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OutlinedButton.icon(
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onPressed: () => _copy(context, url),
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icon: const Icon(Icons.copy_outlined, size: 18),
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label: Text(l10n.copyLink),
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),
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const SizedBox(height: kSpace8),
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// 链接文本（长按选中复制；浏览器打开为次级入口）。
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SelectableText(
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url,
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textAlign: TextAlign.center,
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style: theme.textTheme.labelSmall?.copyWith(
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color: theme.colorScheme.onSurfaceVariant,
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),
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),
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TextButton(
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onPressed: () async {
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final launched = await ref.read(urlLauncherProvider)(
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url,
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);
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if (launched && context.mounted) {
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Navigator.of(context).pop();
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}
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},
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child: Text(l10n.openInBrowser),
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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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Future<void> _openPoster(BuildContext context) async {
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await showModalBottomSheet<void>(
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context: context,
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showDragHandle: true,
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isScrollControlled: true,
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builder: (_) => _PosterSheet(album: album),
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);
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}
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}
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/// 二维码海报弹层：宣传图（banner→cover 兜底）+ 标题 + 时间 + 地址 + 二维码；
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/// 「保存海报图」= RepaintBoundary 3x 渲染 PNG → 相册（gal）。
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///
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/// 弹层内「中文/English」切换海报语言（默认跟 App 语言）：内容文案/相册
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/// 字段/二维码 `?lang=` 随切换，App 语言设置与弹层 chrome 不受影响。
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class _PosterSheet extends ConsumerStatefulWidget {
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const _PosterSheet({required this.album});
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final Album album;
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@override
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ConsumerState<_PosterSheet> createState() => _PosterSheetState();
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}
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/// 保存状态机：idle → saving →（success 自动复原 / error 留置可重试）。
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/// 反馈一律在弹层内呈现——模态弹层遮挡页面 SnackBar，页面级提示不可见。
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enum _SaveState { idle, saving, success, error }
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class _PosterSheetState extends ConsumerState<_PosterSheet> {
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final GlobalKey _posterKey = GlobalKey();
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String? _bannerUrl;
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/// 海报语言（'zh'|'en'；打开时刻快照 App 语言前缀，切换只影响海报）。
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late String _posterLang =
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AppLocalizations.of(context).localeName.toLowerCase().startsWith('zh')
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? 'zh'
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: 'en';
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_SaveState _saveState = _SaveState.idle;
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Timer? _saveResetTimer;
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@override
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void dispose() {
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_saveResetTimer?.cancel();
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super.dispose();
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}
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@override
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void initState() {
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super.initState();
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// 宣传图（banner 全局行；失败静默回退 cover / 占位）。
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Future<void>.microtask(() async {
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try {
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final url = await ref
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.read(apiClientProvider)
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.fetchAlbumAssetUrl(widget.album.id, 'banner');
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if (mounted) setState(() => _bannerUrl = url);
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} on Object {
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// 拉不到 banner 时海报用封面兜底
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}
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});
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}
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Future<void> _save() async {
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_saveResetTimer?.cancel();
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setState(() => _saveState = _SaveState.saving);
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try {
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final boundary =
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_posterKey.currentContext!.findRenderObject()
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as RenderRepaintBoundary;
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final image = await boundary.toImage(pixelRatio: 3);
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await ref.read(posterSaverProvider)(image);
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if (!mounted) return;
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// 成功：按钮翻成功态，2.5s 后自动复原（期间可切语言再存一张）。
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setState(() => _saveState = _SaveState.success);
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_saveResetTimer = Timer(const Duration(milliseconds: 2500), () {
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if (mounted) setState(() => _saveState = _SaveState.idle);
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});
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} on Object {
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// 失败：弹层内红字留置、按钮复位可重试（对齐隐藏照片弹层模式）。
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if (mounted) setState(() => _saveState = _SaveState.error);
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}
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}
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@override
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Widget build(BuildContext context) {
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final l10n = AppLocalizations.of(context);
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final theme = Theme.of(context);
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// 海报内容按海报语言渲染（弹层 chrome 仍跟 App 语言）。
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final posterL10n = lookupAppLocalizations(Locale(_posterLang));
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final url = shareAlbumUrl(widget.album, _posterLang);
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final title = albumDisplayTitle(widget.album, _posterLang);
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// 海报日期：日期粒度（UI06 选择器已去时间；展示同口径）。
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String posterDate(DateTime utc) {
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final wall = tryToAlbumZone(utc, widget.album.timezone) ?? utc.toUtc();
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return '${wall.year}/${wall.month}/${wall.day}';
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}
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final start = posterDate(widget.album.startAt);
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final end = widget.album.endAt == null
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? null
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: posterDate(widget.album.endAt!);
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final dateRange = end == null ? start : '$start ~ $end';
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final venue = albumDisplayVenue(widget.album, _posterLang);
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String? addressForPoster(AlbumSummary album) {
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for (final t in albumDisplayTranslations(album, _posterLang)) {
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final a = t.address?.trim();
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if (a != null && a.isNotEmpty) return a;
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}
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return null;
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}
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final address = addressForPoster(widget.album);
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return SafeArea(
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top: false,
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child: SingleChildScrollView(
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child: Padding(
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padding: const EdgeInsets.fromLTRB(kSpace16, 0, kSpace16, kSpace16),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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// ── 头行：标题 + 显式关闭（海报较长时下拉手势不明显）──
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Row(
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children: [
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Expanded(
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child: Text(
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l10n.sharePosterMode,
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style: theme.textTheme.titleMedium,
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||
),
|
||
),
|
||
IconButton(
|
||
tooltip: l10n.close,
|
||
icon: const Icon(Icons.close),
|
||
onPressed: () => Navigator.of(context).pop(),
|
||
),
|
||
],
|
||
),
|
||
const SizedBox(height: kSpace8),
|
||
// ── 海报语言切换：内容/二维码随之，App 语言不动 ──
|
||
SegmentTabs<String>(
|
||
value: _posterLang,
|
||
onChanged: (lang) => setState(() => _posterLang = lang),
|
||
style: SegmentTabsStyle.light,
|
||
segments: [
|
||
('zh', l10n.localeChinese),
|
||
('en', l10n.localeEnglish),
|
||
],
|
||
),
|
||
const SizedBox(height: kSpace12),
|
||
// ── 海报（整块 RepaintBoundary；下载即渲染此区域）──
|
||
RepaintBoundary(
|
||
key: _posterKey,
|
||
child: Container(
|
||
width: double.infinity,
|
||
color: Colors.white,
|
||
child: Column(
|
||
children: [
|
||
// 顶部宣传图：banner → cover → 品牌占位。
|
||
AspectRatio(
|
||
aspectRatio: 16 / 9,
|
||
child: _bannerUrl != null
|
||
? Image.network(
|
||
_bannerUrl!,
|
||
fit: BoxFit.cover,
|
||
errorBuilder: (_, _, _) =>
|
||
_posterImageFallback(widget.album),
|
||
)
|
||
: _posterImageFallback(widget.album),
|
||
),
|
||
Padding(
|
||
padding: const EdgeInsets.all(kSpace24),
|
||
child: Column(
|
||
// 标题/时间/地址居左（Column 默认 center 会吞掉
|
||
// Text 的 textAlign——对齐由这里统一决定）。
|
||
crossAxisAlignment: CrossAxisAlignment.start,
|
||
children: [
|
||
// 活动标题（居左）。
|
||
Text(
|
||
title,
|
||
textAlign: TextAlign.left,
|
||
style: theme.textTheme.titleLarge?.copyWith(
|
||
color: const Color(0xFF172033),
|
||
fontWeight: FontWeight.w700,
|
||
),
|
||
),
|
||
const SizedBox(height: kSpace12),
|
||
// 时间（居左）。
|
||
Row(
|
||
mainAxisAlignment: MainAxisAlignment.start,
|
||
children: [
|
||
Icon(
|
||
Icons.event_outlined,
|
||
size: 16,
|
||
color: theme.colorScheme.primary,
|
||
),
|
||
const SizedBox(width: kSpace4),
|
||
Flexible(
|
||
child: Text(
|
||
dateRange,
|
||
maxLines: 1,
|
||
overflow: TextOverflow.ellipsis,
|
||
style: theme.textTheme.bodySmall?.copyWith(
|
||
color: const Color(0xFF69778E),
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
if (venue != null) ...[
|
||
const SizedBox(height: kSpace4),
|
||
Row(
|
||
mainAxisAlignment: MainAxisAlignment.start,
|
||
children: [
|
||
Icon(
|
||
Icons.place_outlined,
|
||
size: 16,
|
||
color: theme.colorScheme.primary,
|
||
),
|
||
const SizedBox(width: kSpace4),
|
||
Flexible(
|
||
child: Text(
|
||
address == null || address.isEmpty
|
||
? venue
|
||
: '$venue · $address',
|
||
maxLines: 1,
|
||
overflow: TextOverflow.ellipsis,
|
||
style: theme.textTheme.bodySmall
|
||
?.copyWith(
|
||
color: const Color(0xFF69778E),
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
],
|
||
const SizedBox(height: kSpace24),
|
||
// 二维码 + 说明：保持居中（文字区居左的例外）。
|
||
Center(
|
||
child: QrImageView(
|
||
data: url,
|
||
version: QrVersions.auto,
|
||
size: 200,
|
||
backgroundColor: Colors.white,
|
||
semanticsLabel: url,
|
||
),
|
||
),
|
||
const SizedBox(height: kSpace12),
|
||
Center(
|
||
child: Text(
|
||
posterL10n.shareScanHint,
|
||
style: theme.textTheme.bodySmall?.copyWith(
|
||
color: const Color(0xFF69778E),
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
const SizedBox(height: kSpace16),
|
||
// ── 下载海报图：成功=按钮翻成功态自动复原；失败=下行红字可重试 ──
|
||
FilledButton.icon(
|
||
onPressed: _saveState == _SaveState.saving ? null : _save,
|
||
style: _saveState == _SaveState.success
|
||
? FilledButton.styleFrom(
|
||
backgroundColor:
|
||
theme.brightness == Brightness.light
|
||
? kColorSuccess
|
||
: kColorSuccessDark,
|
||
)
|
||
: null,
|
||
icon: switch (_saveState) {
|
||
_SaveState.saving => const SizedBox(
|
||
width: 16,
|
||
height: 16,
|
||
child: CircularProgressIndicator(strokeWidth: 2),
|
||
),
|
||
_SaveState.success => const Icon(
|
||
Icons.check_circle_outline,
|
||
size: 18,
|
||
),
|
||
_ => const Icon(Icons.download_outlined, size: 18),
|
||
},
|
||
label: Text(
|
||
_saveState == _SaveState.success
|
||
? l10n.posterSaved
|
||
: l10n.posterDownload,
|
||
),
|
||
),
|
||
if (_saveState == _SaveState.error) ...[
|
||
const SizedBox(height: kSpace8),
|
||
Text(
|
||
l10n.posterSaveFailed,
|
||
textAlign: TextAlign.center,
|
||
style: theme.textTheme.bodySmall?.copyWith(
|
||
color: theme.brightness == Brightness.light
|
||
? kColorError
|
||
: kColorErrorDark,
|
||
),
|
||
),
|
||
],
|
||
],
|
||
),
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 宣传图缺省回退：封面 → 品牌色占位。
|
||
Widget _posterImageFallback(Album album) {
|
||
final cover = album.cover?.url;
|
||
if (cover != null) {
|
||
return Image.network(
|
||
cover,
|
||
fit: BoxFit.cover,
|
||
errorBuilder: (_, _, _) => _brandPlaceholder(),
|
||
);
|
||
}
|
||
return _brandPlaceholder();
|
||
}
|
||
|
||
Widget _brandPlaceholder() => Container(
|
||
color: const Color(0xFF12233E),
|
||
alignment: Alignment.center,
|
||
child: const Text(
|
||
'PhotoLive',
|
||
style: TextStyle(
|
||
color: Colors.white,
|
||
fontSize: 24,
|
||
fontWeight: FontWeight.w700,
|
||
letterSpacing: -0.8,
|
||
),
|
||
),
|
||
);
|
||
}
|