PushpinBorder for all platforms

MapControl/WinUI/PushpinBorder.WinUI.cs

@@ -0,0 +1,93 @@
+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// © 2022 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
+using Windows.Foundation;
+#if WINUI
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Markup;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Shapes;
+#else
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Markup;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Shapes;
+#endif
+
+namespace MapControl
+{
+    [ContentProperty(Name = "Child")]
+    public partial class PushpinBorder : UserControl
+    {
+        public static readonly DependencyProperty ArrowSizeProperty = DependencyProperty.Register(
+            nameof(ArrowSize), typeof(Size), typeof(PushpinBorder),
+            new PropertyMetadata(new Size(10d, 20d), (o, e) => ((PushpinBorder)o).SetBorderMargin()));
+
+        public static readonly DependencyProperty BorderWidthProperty = DependencyProperty.Register(
+            nameof(BorderWidth), typeof(double), typeof(PushpinBorder),
+            new PropertyMetadata(0d, (o, e) => ((PushpinBorder)o).SetBorderMargin()));
+
+        private readonly Border border = new Border();
+
+        public PushpinBorder()
+        {
+            var path = new Path
+            {
+                HorizontalAlignment = HorizontalAlignment.Stretch,
+                VerticalAlignment = VerticalAlignment.Stretch,
+                Stretch = Stretch.None
+            };
+            
+            path.SetBinding(Shape.FillProperty, new Binding
+            {
+                Path = new PropertyPath("Background"),
+                Source = this
+            });
+
+            path.SetBinding(Shape.StrokeProperty, new Binding
+            {
+                Path = new PropertyPath("BorderBrush"),
+                Source = this
+            });
+
+            path.SetBinding(Shape.StrokeThicknessProperty, new Binding
+            {
+                Path = new PropertyPath("BorderThickness"),
+                Source = this
+            });
+
+            border.SetBinding(PaddingProperty, new Binding
+            {
+                Path = new PropertyPath("Padding"),
+                Source = this
+            });
+
+            SetBorderMargin();
+
+            var grid = new Grid();
+            grid.Children.Add(path);
+            grid.Children.Add(border);
+
+            Content = grid;
+
+            SizeChanged += (s, e) => path.Data = BuildGeometry();
+        }
+
+        public UIElement Child
+        {
+            get { return border.Child; }
+            set { border.Child = value; }
+        }
+
+        private void SetBorderMargin()
+        {
+            border.Margin = new Thickness(
+                BorderWidth, BorderWidth, BorderWidth, BorderWidth + ArrowSize.Height);
+        }
+    }
+}