MapMultiPolygon

MapControl/Shared/MapMultiPolygon.cs

@@ -0,0 +1,44 @@
+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// Copyright © 2024 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
+using System.Collections.Generic;
+#if WPF
+using System.Windows;
+#elif UWP
+using Windows.UI.Xaml;
+#elif WINUI
+using Microsoft.UI.Xaml;
+#endif
+
+namespace MapControl
+{
+    /// <summary>
+    /// A multi-polygon defined by a collection of collections of Locations.
+    /// Allows to draw filled polygons with holes.
+    /// 
+    /// A PolygonCollection (with ObservableCollection of Location elements) may be used
+    /// for the Polygons property if collection changes of the property itself and its
+    /// elements are both supposed to trigger UI updates.
+    /// </summary>
+    public class MapMultiPolygon : MapPolypoint
+    {
+        public static readonly DependencyProperty PolygonsProperty =
+            DependencyPropertyHelper.Register<MapMultiPolygon, IEnumerable<IEnumerable<Location>>>(nameof(Polygons), null,
+                (polygon, oldValue, newValue) => polygon.DataCollectionPropertyChanged(oldValue, newValue));
+
+        /// <summary>
+        /// Gets or sets the Locations that define the multi-polygon points.
+        /// </summary>
+        public IEnumerable<IEnumerable<Location>> Polygons
+        {
+            get => (IEnumerable<IEnumerable<Location>>)GetValue(PolygonsProperty);
+            set => SetValue(PolygonsProperty, value);
+        }
+
+        protected override void UpdateData()
+        {
+            UpdateData(Polygons);
+        }
+    }
+}