feat: add backdrop

lib/src/just_the_tooltip.dart

@@ -31,6 +31,7 @@ class JustTheTooltip extends StatefulWidget implements JustTheInterface {
     // the tooltip open. But in that case, it seems like we can create a new
     // more narrow field in favor.
     this.isModal = false,
+    this.hasBackdrop = false,
     this.waitDuration,
     this.showDuration,
     this.triggerMode,
@@ -76,6 +77,9 @@ class JustTheTooltip extends StatefulWidget implements JustTheInterface {
   @override
   final bool isModal;
 
+  @override
+  final bool hasBackdrop;
+
   @override
   final Duration? waitDuration;
 
@@ -638,13 +642,20 @@ abstract class JustTheTooltipState<T> extends State<JustTheInterface>
     );
   }
 
+  Widget _createBackdrop() {
+    return Container(
+      color: Colors.black.withOpacity(0.3),
+    );
+  }
+
   Widget _createSkrim() {
     return GestureDetector(
       key: skrimKey,
       behavior: barrierDismissible
           ? HitTestBehavior.translucent
           : HitTestBehavior.deferToChild,
       onTap: _hideTooltip,
+      child: widget.hasBackdrop ? _createBackdrop() : null,
     );
   }
 

lib/src/just_the_tooltip_entry.dart

@@ -14,6 +14,7 @@ class JustTheTooltipEntry extends StatefulWidget implements JustTheInterface {
     this.onShow,
     this.controller,
     this.isModal = false,
+    this.hasBackdrop = false,
     this.waitDuration,
     this.showDuration,
     this.triggerMode,
@@ -59,6 +60,9 @@ class JustTheTooltipEntry extends StatefulWidget implements JustTheInterface {
   @override
   final bool isModal;
 
+  @override
+  final bool hasBackdrop;
+
   @override
   final Duration? waitDuration;
 

lib/src/models/just_the_interface.dart

@@ -107,6 +107,9 @@ abstract class JustTheInterface extends StatefulWidget {
   /// `scrim` is clicked or it is forcibly closed
   bool get isModal;
 
+  /// If true, once the tooltip is opened, render the backdrop
+  bool get hasBackdrop;
+
   /// The length of time that a pointer must hover over a tooltip's widget
   /// before the tooltip will be shown.
   ///