二次开发源码提交

2026-05-15 08:52:48 +08:00
parent 4131f7321a
commit eb35a1d067
191 changed files with 34566 additions and 0 deletions
@@ -0,0 +1,92 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import '../../data/models/file_model.dart';
+import '../../services/cache_manager_service.dart';
+import '../../services/thumbnail_service.dart';
+import '../../core/utils/file_icon_utils.dart';
+
+/// 缩略图加载组件 — 异步获取 URL 并用 CachedNetworkImage 渲染
+class ThumbnailImage extends StatefulWidget {
+  final FileModel file;
+  final String? contextHint;
+  final double borderRadius;
+
+  const ThumbnailImage({
+    super.key,
+    required this.file,
+    this.contextHint,
+    this.borderRadius = 10,
+  });
+
+  @override
+  State<ThumbnailImage> createState() => _ThumbnailImageState();
+}
+
+class _ThumbnailImageState extends State<ThumbnailImage> {
+  String? _imageUrl;
+  bool _isLoading = true;
+  bool _hasError = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadThumbnail();
+  }
+
+  @override
+  void didUpdateWidget(ThumbnailImage oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.file.path != widget.file.path) {
+      _loadThumbnail();
+    }
+  }
+
+  Future<void> _loadThumbnail() async {
+    setState(() {
+      _isLoading = true;
+      _hasError = false;
+    });
+
+    final url = await ThumbnailService.instance.getThumbnailUrl(
+      fileUri: widget.file.relativePath,
+      contextHint: widget.contextHint,
+    );
+
+    if (!mounted) return;
+
+    setState(() {
+      _imageUrl = url;
+      _isLoading = false;
+      _hasError = url == null;
+    });
+  }
+
+  Widget _buildPlaceholder(BuildContext context) {
+    return Center(
+      child: FileIconUtils.buildIconWidget(
+        context: context,
+        file: widget.file,
+        size: 40,
+        iconSize: 22,
+        borderRadius: widget.borderRadius,
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_isLoading) return _buildPlaceholder(context);
+    if (_hasError || _imageUrl == null) return _buildPlaceholder(context);
+
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(widget.borderRadius),
+      child: CachedNetworkImage(
+        imageUrl: _imageUrl!,
+        cacheManager: CacheManagerService.instance.manager,
+        fit: BoxFit.cover,
+        placeholder: (context, url) => _buildPlaceholder(context),
+        errorWidget: (context, url, error) => _buildPlaceholder(context),
+      ),
+    );
+  }
+}