added contentdxOffset

lib/src/popover.dart

@@ -53,6 +53,10 @@ import 'utils/popover_utils.dart';
 /// position on Y axis. It can be positive or negative number.
 /// This argument defaults to 0.
 ///
+/// The`contentDxOffset` offsets [Popover]s content
+/// position on X axis. It can be positive or negative number.
+/// This argument defaults to 0.
+///
 /// The `barrierDismissible` argument is used to determine whether this route
 /// can be dismissed by tapping the modal barrier. This argument defaults
 /// to true.
@@ -88,6 +92,7 @@ Future<T?> showPopover<T extends Object?>({
   double arrowDxOffset = 0,
   double arrowDyOffset = 0,
   double contentDyOffset = 0,
+  double contentDxOffset = 0,
   bool barrierDismissible = true,
   double? width,
   double? height,
@@ -131,6 +136,7 @@ Future<T?> showPopover<T extends Object?>({
             arrowDxOffset: arrowDxOffset,
             arrowDyOffset: arrowDyOffset,
             contentDyOffset: contentDyOffset,
+            contentDxOffset: contentDxOffset,
             key: key,
           ),
         );

lib/src/popover_item.dart

@@ -19,6 +19,7 @@ class PopoverItem extends StatefulWidget {
   final double arrowDxOffset;
   final double arrowDyOffset;
   final double contentDyOffset;
+  final double contentDxOffset;
   final PopoverTransition transition;
 
   const PopoverItem({
@@ -36,6 +37,7 @@ class PopoverItem extends StatefulWidget {
     this.arrowDxOffset = 0,
     this.arrowDyOffset = 0,
     this.contentDyOffset = 0,
+    this.contentDxOffset = 0,
     super.key,
   });
 
@@ -142,7 +144,7 @@ class _PopoverItemState extends State<PopoverItem> {
       _attachRect = Rect.fromLTWH(
         offset.dx + (widget.arrowDxOffset),
         offset.dy + (widget.arrowDyOffset),
-        bounds.width,
+        bounds.width + (widget.contentDxOffset),
         bounds.height + (widget.contentDyOffset),
       );
     }