Add Scrollbar properties.

lib/src/pluto_grid_configuration.dart

@@ -660,6 +660,7 @@ class PlutoGridScrollbarConfig {
     this.draggableScrollbar = true,
     this.isAlwaysShown = false,
     this.onlyDraggingThumb = true,
+    this.enableScrollAfterDragEnd = true,
     this.scrollbarThickness = PlutoScrollbar.defaultThickness,
     this.scrollbarThicknessWhileDragging =
         PlutoScrollbar.defaultThicknessWhileDragging,
@@ -671,6 +672,7 @@ class PlutoGridScrollbarConfig {
     this.scrollbarRadius = PlutoScrollbar.defaultRadius,
     this.scrollbarRadiusWhileDragging =
         PlutoScrollbar.defaultRadiusWhileDragging,
+    this.longPressDuration,
     this.dragDevices,
   });
 
@@ -681,6 +683,13 @@ class PlutoGridScrollbarConfig {
   /// If [onlyDraggingThumb] is false, scrolling can be done by dragging the track area.
   final bool onlyDraggingThumb;
 
+  /// If you release the scroll bar after scrolling,
+  /// the scroll bar moves further according to the moving speed.
+  ///
+  /// If set to false,
+  /// the scroll bar will stop moving as soon as the scroll bar is released.
+  final bool enableScrollAfterDragEnd;
+
   final double scrollbarThickness;
 
   final double scrollbarThicknessWhileDragging;
@@ -701,6 +710,9 @@ class PlutoGridScrollbarConfig {
 
   final Radius scrollbarRadiusWhileDragging;
 
+  /// Set the long press time of the scroll bar. 100 ms if not set.
+  final Duration? longPressDuration;
+
   final Set<PointerDeviceKind>? dragDevices;
 
   @override
@@ -711,6 +723,7 @@ class PlutoGridScrollbarConfig {
             draggableScrollbar == other.draggableScrollbar &&
             isAlwaysShown == other.isAlwaysShown &&
             onlyDraggingThumb == other.onlyDraggingThumb &&
+            enableScrollAfterDragEnd == other.enableScrollAfterDragEnd &&
             scrollbarThickness == other.scrollbarThickness &&
             scrollbarThicknessWhileDragging ==
                 other.scrollbarThicknessWhileDragging &&
@@ -722,6 +735,7 @@ class PlutoGridScrollbarConfig {
             scrollbarRadius == other.scrollbarRadius &&
             scrollbarRadiusWhileDragging ==
                 other.scrollbarRadiusWhileDragging &&
+            longPressDuration == other.longPressDuration &&
             dragDevices == other.dragDevices;
   }
 
@@ -730,6 +744,7 @@ class PlutoGridScrollbarConfig {
         draggableScrollbar,
         isAlwaysShown,
         onlyDraggingThumb,
+        enableScrollAfterDragEnd,
         scrollbarThickness,
         scrollbarThicknessWhileDragging,
         hoverWidth,
@@ -739,6 +754,7 @@ class PlutoGridScrollbarConfig {
         scrollBarTrackColor,
         scrollbarRadius,
         scrollbarRadiusWhileDragging,
+        longPressDuration,
         dragDevices,
       );
 }

lib/src/ui/pluto_body_rows.dart

@@ -79,6 +79,7 @@ class PlutoBodyRowsState extends PlutoStateWithChange<PlutoBodyRows> {
       isAlwaysShown: scrollbarConfig.isAlwaysShown,
       onlyDraggingThumb: scrollbarConfig.onlyDraggingThumb,
       enableHover: PlatformHelper.isDesktop,
+      enableScrollAfterDragEnd: scrollbarConfig.enableScrollAfterDragEnd,
       thickness: scrollbarConfig.scrollbarThickness,
       thicknessWhileDragging: scrollbarConfig.scrollbarThicknessWhileDragging,
       hoverWidth: scrollbarConfig.hoverWidth,
@@ -88,6 +89,7 @@ class PlutoBodyRowsState extends PlutoStateWithChange<PlutoBodyRows> {
       scrollBarTrackColor: scrollbarConfig.scrollBarTrackColor,
       radius: scrollbarConfig.scrollbarRadius,
       radiusWhileDragging: scrollbarConfig.scrollbarRadiusWhileDragging,
+      longPressDuration: scrollbarConfig.longPressDuration,
       child: SingleChildScrollView(
         controller: _horizontalScroll,
         scrollDirection: Axis.horizontal,

lib/src/widgets/pluto_scrollbar.dart

@@ -17,6 +17,7 @@ const double _kScrollbarMinOverscrollLength = 8.0;
 const Duration _kScrollbarTimeToFade = Duration(milliseconds: 1200);
 const Duration _kScrollbarFadeDuration = Duration(milliseconds: 250);
 const Duration _kScrollbarResizeDuration = Duration(milliseconds: 100);
+const Duration _kScrollbarLongPressDuration = Duration(milliseconds: 100);
 
 // Extracted from iOS 13.1 beta using Debug View Hierarchy.
 const Color _kScrollbarColor = CupertinoDynamicColor.withBrightness(
@@ -39,13 +40,15 @@ class PlutoScrollbar extends StatefulWidget {
     this.isAlwaysShown = false,
     this.onlyDraggingThumb = true,
     this.enableHover = true,
+    this.enableScrollAfterDragEnd = true,
     this.thickness = defaultThickness,
     this.thicknessWhileDragging = defaultThicknessWhileDragging,
     this.hoverWidth = defaultScrollbarHoverWidth,
     double? mainAxisMargin,
     double? crossAxisMargin,
     Color? scrollBarColor,
     Color? scrollBarTrackColor,
+    Duration? longPressDuration,
     this.radius = defaultRadius,
     this.radiusWhileDragging = defaultRadiusWhileDragging,
     required this.child,
@@ -57,6 +60,7 @@ class PlutoScrollbar extends StatefulWidget {
         crossAxisMargin = crossAxisMargin ?? _kScrollbarCrossAxisMargin,
         scrollBarColor = scrollBarColor ?? _kScrollbarColor,
         scrollBarTrackColor = scrollBarTrackColor ?? _kTrackColor,
+        longPressDuration = longPressDuration ?? _kScrollbarLongPressDuration,
         super(key: key);
   final ScrollController? horizontalController;
 
@@ -68,6 +72,10 @@ class PlutoScrollbar extends StatefulWidget {
 
   final bool enableHover;
 
+  final bool enableScrollAfterDragEnd;
+
+  final Duration longPressDuration;
+
   final double thickness;
 
   final double thicknessWhileDragging;
@@ -361,7 +369,9 @@ class PlutoGridCupertinoScrollbarState extends State<PlutoScrollbar>
     _startFadeoutTimer();
     _thicknessAnimationController.reverse();
     _dragScrollbarAxisPosition = null;
-    final double scrollVelocity = _painter!.getTrackToScroll(trackVelocity);
+    final double scrollVelocity = widget.enableScrollAfterDragEnd
+        ? _painter!.getTrackToScroll(trackVelocity)
+        : 0;
     _drag?.end(DragEndDetails(
       primaryVelocity: -scrollVelocity,
       velocity: Velocity(
@@ -423,8 +433,9 @@ class PlutoGridCupertinoScrollbarState extends State<PlutoScrollbar>
     gestures[_ThumbPressGestureRecognizer] =
         GestureRecognizerFactoryWithHandlers<_ThumbPressGestureRecognizer>(
       () => _ThumbPressGestureRecognizer(
-        debugOwner: this,
         customPaintKey: _customPaintKey,
+        debugOwner: this,
+        duration: widget.longPressDuration,
         onlyDraggingThumb: widget.onlyDraggingThumb,
       ),
       (_ThumbPressGestureRecognizer instance) {
@@ -1373,15 +1384,16 @@ class _ThumbPressGestureRecognizer extends LongPressGestureRecognizer {
   _ThumbPressGestureRecognizer({
     double? postAcceptSlopTolerance,
     Set<PointerDeviceKind>? supportedDevices,
-    required Object debugOwner,
     required GlobalKey customPaintKey,
+    required Object debugOwner,
+    required Duration duration,
     this.onlyDraggingThumb = false,
   })  : _customPaintKey = customPaintKey,
         super(
           postAcceptSlopTolerance: postAcceptSlopTolerance,
           supportedDevices: supportedDevices,
           debugOwner: debugOwner,
-          duration: const Duration(milliseconds: 100),
+          duration: duration,
         );
 
   final GlobalKey _customPaintKey;