opt: custom scroll for better scroll and add trackpad support

flutter/lib/consts.dart

@@ -16,7 +16,9 @@ const int kDesktopDefaultDisplayWidth = 1080;
 const int kDesktopDefaultDisplayHeight = 720;
 
 /// [kDefaultScrollAmountMultiplier] indicates how many rows can be scrolled after a minimum scroll action of mouse
-const kDefaultScrollAmountMultiplier = 10.0;
+const kDefaultScrollAmountMultiplier = 5.0;
+const kDefaultScrollDuration = Duration(milliseconds: 50);
+const kDefaultMouseWhellThrottleDuration = Duration(milliseconds: 50);
 const kFullScreenEdgeSize = 1.0;
 const kWindowEdgeSize = 4.0;
 

flutter/lib/desktop/pages/connection_page.dart

@@ -852,7 +852,9 @@ class _PeerTabbedPageState extends State<_PeerTabbedPage>
   Widget _createTabBarView() {
     return Expanded(
         child: PageView(
-                controller: _pageController, children: super.widget.children)
+                physics: NeverScrollableScrollPhysics(),
+                controller: _pageController,
+                children: super.widget.children)
             .marginSymmetric(vertical: 12));
   }
 

flutter/lib/desktop/widgets/peer_widget.dart

@@ -89,7 +89,7 @@ class _PeerWidgetState extends State<_PeerWidget> with WindowListener {
             : DesktopScrollWrapper(
                 scrollController: _scrollController,
                 child: SingleChildScrollView(
-                  physics: const NeverScrollableScrollPhysics(),
+                  physics: NeverScrollableScrollPhysics(),
                   controller: _scrollController,
                   child: ObxValue<RxString>((searchText) {
                     return FutureBuilder<List<Peer>>(

flutter/lib/desktop/widgets/scroll_wrapper.dart

@@ -14,7 +14,11 @@ class DesktopScrollWrapper extends StatelessWidget {
     return ImprovedScrolling(
       scrollController: scrollController,
       enableCustomMouseWheelScrolling: true,
-      customMouseWheelScrollConfig: const CustomMouseWheelScrollConfig(
+      customMouseWheelScrollConfig: CustomMouseWheelScrollConfig(
+          scrollDuration: kDefaultScrollDuration,
+          scrollCurve: Curves.linearToEaseOut,
+          mouseWheelTurnsThrottleTimeMs:
+              kDefaultMouseWhellThrottleDuration.inMilliseconds,
           scrollAmountMultiplier: kDefaultScrollAmountMultiplier),
       child: child,
     );

flutter/pubspec.yaml

@@ -80,7 +80,10 @@ dependencies:
     desktop_drop: ^0.3.3
     scroll_pos: ^0.3.0
     rxdart: ^0.27.5
-    flutter_improved_scrolling: ^0.0.3
+    flutter_improved_scrolling: 
+        git:
+            url: https://github.com/Kingtous/flutter_improved_scrolling
+            ref: 62f09545149f320616467c306c8c5f71714a18e6
 
 dev_dependencies:
     icons_launcher: ^2.0.4