65 lines
1.4 KiB
Dart
65 lines
1.4 KiB
Dart
import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_cached_pdfview/flutter_cached_pdfview.dart';
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import 'package:go_router/go_router.dart';
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void showFilePreviewer(
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BuildContext context, {
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required String url,
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}) {
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showDialog(
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context: context,
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builder: (BuildContext context) {
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return FilePreviewer(
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url: url,
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);
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},
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);
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}
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class FilePreviewer extends StatelessWidget {
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final String url;
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const FilePreviewer({super.key, this.url = ""});
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bool _isImage(String suffix) {
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final lower = suffix.toLowerCase();
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return ['jpg', 'jpeg', 'png', 'gif', 'webp'].contains(lower);
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}
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bool _isPdf(String suffix) {
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return suffix.toLowerCase() == 'pdf';
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}
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@override
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Widget build(BuildContext context) {
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final suffix = url.split('.').last;
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Widget child;
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if (_isImage(suffix)) {
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child = InteractiveViewer(
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child: CachedNetworkImage(
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imageUrl: url,
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placeholder: (_, __) => const Center(
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child: CircularProgressIndicator(),
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),
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),
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);
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} else if (_isPdf(suffix)) {
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child = PDF(
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enableSwipe: true,
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).cachedFromUrl(url);
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} else {
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child = const Text('不支持的文件类型');
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}
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return GestureDetector(
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onTap: () {
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context.pop();
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},
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child: Container(
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child: child,
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),
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);
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}
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}
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