opt: more configurable scroll logic & edge size

flutter/lib/common.dart

@@ -248,6 +248,7 @@ List<Locale> supportedLocales = const [
   // specify CN/TW to fix CJK issue in flutter
   Locale('zh', 'CN'),
   Locale('zh', 'TW'),
+  Locale('zh', 'SG'),
   Locale('fr'),
   Locale('de'),
   Locale('it'),

flutter/lib/desktop/pages/desktop_tab_page.dart

@@ -60,7 +60,7 @@ class _DesktopTabPageState extends State<DesktopTabPage> {
     return Platform.isMacOS
         ? tabWidget
         : Obx(() => DragToResizeArea(
-            resizeEdgeSize: fullscreen.value ? 1.0 : 8.0, child: tabWidget));
+            resizeEdgeSize: fullscreen.value ? 1.0 : 4.0, child: tabWidget));
   }
 
   void onAddSetting() {

flutter/lib/desktop/pages/file_manager_tab_page.dart

@@ -81,6 +81,7 @@ class _FileManagerTabPageState extends State<FileManagerTabPage> {
     return Platform.isMacOS
         ? tabWidget
         : SubWindowDragToResizeArea(
+            resizeEdgeSize: 4.0,
             windowId: windowId(),
             child: tabWidget,
           );

flutter/lib/desktop/pages/port_forward_tab_page.dart

@@ -92,6 +92,7 @@ class _PortForwardTabPageState extends State<PortForwardTabPage> {
     return Platform.isMacOS
         ? tabWidget
         : SubWindowDragToResizeArea(
+            resizeEdgeSize: 4.0,
             windowId: windowId(),
             child: tabWidget,
           );

flutter/lib/desktop/pages/remote_tab_page.dart

@@ -143,7 +143,7 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {
     return Platform.isMacOS
         ? tabWidget
         : Obx(() => SubWindowDragToResizeArea(
-            resizeEdgeSize: fullscreen.value ? 1.0 : 8.0,
+            resizeEdgeSize: fullscreen.value ? 1.0 : 4.0,
             windowId: windowId(),
             child: tabWidget));
   }

flutter/lib/desktop/widgets/peer_widget.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_hbb/desktop/widgets/scroll_wrapper.dart';
 import 'package:get/get.dart';
 import 'package:provider/provider.dart';
 import 'package:visibility_detector/visibility_detector.dart';
@@ -41,6 +42,7 @@ class _PeerWidgetState extends State<_PeerWidget> with WindowListener {
   static const int _maxQueryCount = 3;
 
   final _curPeers = <String>{};
+  final _scrollController = ScrollController();
   var _lastChangeTime = DateTime.now();
   var _lastQueryPeers = <String>{};
   var _lastQueryTime = DateTime.now().subtract(const Duration(hours: 1));
@@ -84,8 +86,10 @@ class _PeerWidgetState extends State<_PeerWidget> with WindowListener {
             ? Center(
                 child: Text(translate("Empty")),
               )
-            : SingleChildScrollView(
+            : DesktopScrollWrapper(
-                controller: ScrollController(),
+                scrollController: _scrollController,
+                child: SingleChildScrollView(
+                  controller: _scrollController,
                   child: ObxValue<RxString>((searchText) {
                     return FutureBuilder<List<Peer>>(
                       builder: (context, snapshot) {
@@ -121,7 +125,9 @@ class _PeerWidgetState extends State<_PeerWidget> with WindowListener {
                                 )));
                           }
                           return Wrap(
-                            spacing: space, runSpacing: space, children: cards);
+                              spacing: space,
+                              runSpacing: space,
+                              children: cards);
                         } else {
                           return const Center(
                             child: CircularProgressIndicator(),
@@ -133,6 +139,7 @@ class _PeerWidgetState extends State<_PeerWidget> with WindowListener {
                   }, peerSearchText),
                 ),
               ),
+      ),
     );
   }
 

flutter/lib/desktop/widgets/scroll_wrapper.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_improved_scrolling/flutter_improved_scrolling.dart';
+
+class DesktopScrollWrapper extends StatelessWidget {
+  final ScrollController scrollController;
+  final Widget child;
+  const DesktopScrollWrapper(
+      {Key? key, required this.scrollController, required this.child})
+      : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return ImprovedScrolling(
+      scrollController: scrollController,
+      enableCustomMouseWheelScrolling: false,
+      customMouseWheelScrollConfig:
+          const CustomMouseWheelScrollConfig(scrollAmountMultiplier: 3.0),
+      child: child,
+    );
+  }
+}

flutter/pubspec.yaml

@@ -80,6 +80,7 @@ dependencies:
     desktop_drop: ^0.3.3
     scroll_pos: ^0.3.0
     rxdart: ^0.27.5
+    flutter_improved_scrolling: ^0.0.3
 
 dev_dependencies:
     icons_launcher: ^2.0.4