浅念
102 lines
3.4 KiB
Dart
102 lines
3.4 KiB
Dart
/// 分享二维码对话框（P3 计划 Task 4）。
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///
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/// viewer 链接构造：`{VIEWER_BASE}/a/{publicToken}`（[ApiConfig.
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/// viewerAlbumUrl]，VIEWER_BASE 经 --dart-define 覆盖，dev=模拟器宿主
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/// 回环 5175）。QrImageView 渲染链接 + 链接文本可长按选中 + 一键复制。
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///
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/// 用 [Dialog] 而非 [AlertDialog]：AlertDialog 内容经 IntrinsicWidth
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/// 测量，而 QrImageView 内部使用 LayoutBuilder（不支持 intrinsic 计算）
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/// 会抛布局断言，普通 Dialog 无此路径。
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library;
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:qr_flutter/qr_flutter.dart';
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import '../core/config.dart';
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import '../l10n/app_localizations.dart';
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/// 观众分享二维码对话框（[publicToken] 来自相册详情）。
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class ShareQrDialog extends StatelessWidget {
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const ShareQrDialog({required this.publicToken, super.key});
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final String publicToken;
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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(
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content: Text(AppLocalizations.of(context).copiedToClipboard),
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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) {
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final l10n = AppLocalizations.of(context);
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final theme = Theme.of(context);
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final url = ApiConfig.viewerAlbumUrl(publicToken);
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return Dialog(
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child: Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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Text(
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l10n.shareQrTitle,
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style: theme.textTheme.titleMedium
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?.copyWith(fontWeight: FontWeight.w600),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 16),
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Center(
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// 白底保证暗色主题下的扫码对比度。
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child: Container(
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color: Colors.white,
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padding: const EdgeInsets.all(8),
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child: QrImageView(
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data: url,
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version: QrVersions.auto,
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size: 216,
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backgroundColor: Colors.white,
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),
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),
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),
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const SizedBox(height: 12),
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SelectableText(
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url,
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textAlign: TextAlign.center,
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style: theme.textTheme.bodySmall,
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),
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const SizedBox(height: 8),
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Text(
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l10n.qrHint,
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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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const SizedBox(height: 12),
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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TextButton.icon(
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onPressed: () => _copy(context, url),
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icon: const Icon(Icons.copy_outlined),
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label: Text(l10n.copyLink),
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),
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TextButton(
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onPressed: () => Navigator.of(context).pop(),
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child: Text(l10n.ok),
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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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