Update context menu for image

lib/components/gallery_basic_info.dart

@@ -17,7 +17,9 @@ class GalleryBasicInfo extends StatelessWidget {
         child: Column(children: [
           Expanded(
               child: Row(children: [
-            Expanded(flex: 2, child: Thumbnail(firstPage, fileId: fileId)),
+            Expanded(
+                flex: 2,
+                child: Thumbnail(firstPage, fileId: fileId, gid: gMeta.gid)),
             Expanded(
                 flex: 3,
                 child: Column(

lib/components/gallery_info.dart

@@ -67,9 +67,12 @@ class _GalleryInfo extends State<GalleryInfo> with ThemeModeWidget {
                       fileId: firstFileId, controller: controller),
                 ]),
               ),
-        ThumbnailGridView(widget.gData.pages,
+        ThumbnailGridView(
-            SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: useMobile ? 2 : 5),
+            widget.gData.pages,
-            files: widget.files),
+            SliverGridDelegateWithFixedCrossAxisCount(
+                crossAxisCount: useMobile ? 2 : 5),
+            files: widget.files,
+            gid: widget.gData.meta.gid),
       ],
     );
   }

lib/components/gallery_info_desktop.dart

@@ -21,7 +21,9 @@ class GalleryInfoDesktop extends StatelessWidget {
             width: 1280,
             child: Row(children: [
               Expanded(
-                  flex: 3, child: Thumbnail(gData.pages.first, fileId: fileId)),
+                  flex: 3,
+                  child: Thumbnail(gData.pages.first,
+                      fileId: fileId, gid: gData.meta.gid)),
               Expanded(
                   flex: 7,
                   child: Column(

lib/components/image.dart

@@ -3,17 +3,20 @@ import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:logging/logging.dart';
 import 'package:super_context_menu/super_context_menu.dart';
+import '../globals.dart';
 import '../utils/clipboard.dart';
 
 final _log = Logger("ImageWithContextMenu");
 
 class ImageWithContextMenu extends StatelessWidget {
   const ImageWithContextMenu(this.data,
-      {Key? key, this.uri, this.fmt = ImageFmt.jpg})
+      {Key? key, this.uri, this.dir, this.fileName, this.fmt = ImageFmt.jpg})
       : super(key: key);
   final Uint8List data;
   final String? uri;
   final ImageFmt fmt;
+  final String? fileName;
+  final String? dir;
   @override
   Widget build(BuildContext context) {
     return ContextMenuWidget(
@@ -38,6 +41,18 @@ class ImageWithContextMenu extends StatelessWidget {
                   });
                 }));
           }
+          if (fileName != null) {
+            list.add(MenuAction(
+                title: AppLocalizations.of(context)!.saveAs,
+                callback: () {
+                  try {
+                    platformPath.saveFile(fileName!, fmt.toMimeType(), data,
+                        dir: dir ?? "");
+                  } catch (err) {
+                    _log.warning("Failed to save image:", err);
+                  }
+                }));
+          }
           return Menu(children: list);
         },
         child: Image.memory(data));

lib/components/thumbnail.dart

@@ -8,6 +8,7 @@ import 'package:path/path.dart';
 import '../api/client.dart';
 import '../api/gallery.dart';
 import '../globals.dart';
+import '../utils.dart';
 import '../utils/clipboard.dart';
 import 'image.dart';
 
@@ -15,7 +16,7 @@ final _log = Logger("Thumbnail");
 
 class Thumbnail extends StatefulWidget {
   const Thumbnail(ExtendedPMeta pMeta,
-      {Key? key, int? max, int? width, int? height, int? fileId})
+      {Key? key, int? max, int? width, int? height, int? fileId, this.gid})
       : _pMeta = pMeta,
         _max = max ?? 1200,
         _width = width,
@@ -27,6 +28,7 @@ class Thumbnail extends StatefulWidget {
   final int? _width;
   final int? _height;
   final int? _fileId;
+  final int? gid;
 
   int get height => _height != null
       ? _height!
@@ -58,6 +60,7 @@ class _Thumbnail extends State<Thumbnail> {
   String? _uri;
   CancelToken? _cancel;
   String? _fileName;
+  String _dir = "";
   Future<void> _fetchData() async {
     try {
       _cancel = CancelToken();
@@ -110,6 +113,7 @@ class _Thumbnail extends State<Thumbnail> {
     _showNsfw = false;
     _uri = null;
     _fileName = "${basenameWithoutExtension(widget._pMeta.name)}_thumb";
+    _dir = isAndroid && widget.gid != null ? widget.gid!.toString() : "";
     super.initState();
   }
 
@@ -139,7 +143,8 @@ class _Thumbnail extends State<Thumbnail> {
         break;
       case _ThumbnailMenu.saveAs:
         try {
-          await platformPath.saveFile(_fileName!, "image/jpeg", _data!);
+          await platformPath.saveFile(_fileName!, "image/jpeg", _data!,
+              dir: _dir);
         } catch (err) {
           _log.warning("Failed to save image:", err);
         }
@@ -194,8 +199,10 @@ class _Thumbnail extends State<Thumbnail> {
                                       sigmaX: 10,
                                       sigmaY: 10,
                                       tileMode: TileMode.decal),
-                                  child:
+                                  child: ImageWithContextMenu(_data!,
-                                      ImageWithContextMenu(_data!, uri: _uri))),
+                                      uri: _uri,
+                                      fileName: _fileName,
+                                      dir: _dir))),
                           SizedBox(
                               width: widget.width.toDouble(),
                               height: widget.height.toDouble(),
@@ -216,7 +223,8 @@ class _Thumbnail extends State<Thumbnail> {
                         SizedBox(
                             width: widget.width.toDouble(),
                             height: widget.height.toDouble(),
-                            child: ImageWithContextMenu(_data!, uri: _uri)),
+                            child: ImageWithContextMenu(_data!,
+                                uri: _uri, fileName: _fileName, dir: _dir)),
                         moreVertMenu
                       ])
                 : Center(

lib/components/thumbnail_gridview.dart

@@ -5,9 +5,11 @@ import '../globals.dart';
 import 'thumbnail.dart';
 
 class ThumbnailGridView extends StatelessWidget {
-  const ThumbnailGridView(this.pages, this.gridDelegate, {Key? key, this.files})
+  const ThumbnailGridView(this.pages, this.gridDelegate,
+      {Key? key, this.files, this.gid})
       : super(key: key);
   final List<ExtendedPMeta> pages;
+  final int? gid;
   final EhFiles? files;
   final SliverGridDelegate gridDelegate;
 
@@ -24,7 +26,7 @@ class ThumbnailGridView extends StatelessWidget {
               files != null ? files!.files[page.token]!.first.id : null;
           return Container(
               padding: const EdgeInsets.all(4),
-              child: Thumbnail(page, fileId: fileId));
+              child: Thumbnail(page, fileId: fileId, gid: gid));
         });
   }
 }

lib/utils/clipboard.dart

@@ -6,7 +6,18 @@ import '../platform/to_png_none.dart'
 enum ImageFmt {
   jpg,
   png,
-  gif,
+  gif;
+
+  String toMimeType() {
+    switch (this) {
+      case ImageFmt.jpg:
+        return "image/jpeg";
+      case ImageFmt.png:
+        return "image/png";
+      case ImageFmt.gif:
+        return "image/gif";
+    }
+  }
 }
 
 Future<void> copyImageToClipboard(Uint8List data, ImageFmt fmt) async {