fix tags panel may overscroll on iOS

lib/components/tags.dart

@@ -3,6 +3,8 @@ import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import '../api/gallery.dart';
 import '../globals.dart';
 import '../main.dart';
+import '../platform/ua.dart' as ua;
+import '../utils.dart';
 import 'tag.dart';
 import 'tag_tooltip.dart';
 import 'scroll_parent.dart';
@@ -52,6 +54,9 @@ class _TagsPanel extends State<TagsPanel> {
     final stt = prefs.getBool("showTranslatedTag") ??
         MainApp.of(context).lang.toLocale().languageCode == "zh";
     final re = ListView.builder(
+        physics: isIOS || ua.isSafari
+            ? const ClampingScrollPhysics()
+            : null,
         padding: const EdgeInsets.all(8),
         itemCount: data!.length,
         itemBuilder: (context, index) {

lib/platform/ua.dart

@@ -0,0 +1 @@
+export 'ua_none.dart' if (dart.library.html) 'ua_web.dart';

lib/platform/ua_none.dart

@@ -0,0 +1,2 @@
+bool get isSafari => false;
+bool get isMobile => false;

lib/platform/ua_web.dart

@@ -0,0 +1,9 @@
+// ignore: avoid_web_libraries_in_flutter
+import 'dart:html';
+import 'package:user_agent_analyzer/user_agent_analyzer.dart';
+
+UserAgent? _ua;
+
+UserAgent get ua => _ua ??= UserAgent(window.navigator.userAgent);
+bool get isSafari => ua.isSafari;
+bool get isMobile => ua.isMobile;

lib/utils.dart

@@ -5,6 +5,7 @@ bool get isDesktop =>
     !kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS);
 bool get isWindows => !kIsWeb && Platform.isWindows;
 bool get isAndroid => !kIsWeb && Platform.isAndroid;
+bool get isIOS => !kIsWeb && Platform.isIOS;
 
 String? getFilenameFromContentDisposition(String? contentDisposition) {
   if (contentDisposition == null) {

pubspec.lock

@@ -883,6 +883,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.2"
+  user_agent_analyzer:
+    dependency: "direct main"
+    description:
+      name: user_agent_analyzer
+      sha256: "19f8099f09e4800c3f58601c053db66592e8cd6e6a34ab3b9c21a51e0e245e28"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.0.0"
   uuid:
     dependency: transitive
     description:

pubspec.yaml

@@ -35,6 +35,7 @@ dependencies:
   shared_preferences: ^2.2.0
   super_clipboard: ^0.6.4
   super_context_menu: ^0.6.4
+  user_agent_analyzer: ^5.0.0
   window_manager: ^0.3.6
 
 dependency_overrides: