add presenter property

Author: beto-rodriguez

samples/FluidHostPage.cs

@@ -7,20 +7,26 @@ public class FluidHostPage : ContentPage, IFluidHost
 {
     private int _zIndex = 0;
     private View? _currentView;
-    private readonly AbsoluteLayout _root = [];
+    private readonly AbsoluteLayout _presenter = [];
+
     public FluidHostPage()
     {
-        Content = _root = [];
+        Content = _presenter = [];
         Loaded += (_, _) => FlowNavigation.Current.Initialize(this);
         SizeChanged += (_, _) => _currentView?.Size(Width, Height);
+
+        Presenter = _presenter;
     }
+
+    public View Presenter { get; }
+
     public void ShowView(View view)
     {
         view.ZIndex = _zIndex++;
         view.WidthRequest = Width;
         view.HeightRequest = Height;
         _currentView = view;
-        if (!_root.Children.Contains(view))
-            _root.Children.Add(view);
+        if (!_presenter.Children.Contains(view))
+            _presenter.Children.Add(view);
     }
 }

src/FlowExtensions.cs

@@ -78,7 +78,7 @@ public static T OnTapped<T>(this T view, Action<Point> action) where T : Content
 
         tapGesture.Tapped += (s, e) =>
         {
-            var p = e.GetPosition((Page)FlowNavigation.Current.View);
+            var p = e.GetPosition(FlowNavigation.Current.View.Presenter);
             var p0 = e.GetPosition(view.Content);
 
             if (p is null || p0 is null) return;

src/IFluidHost.cs

@@ -15,6 +15,11 @@ public interface IFluidHost
     /// </summary>
     double Height { get; }
 
+    /// <summary>
+    /// Gets the presenter.
+    /// </summary>
+    View Presenter { get; }
+
     /// <summary>
     /// Shows the specified view.
     /// </summary>