chore: separated Microsoft.Expression.Drawing code

src/Shared/Microsoft.Expression.Drawing/Media/IGeometrySource.cs

@@ -0,0 +1,16 @@
+using System.Windows;
+
+namespace HandyControl.Expression.Media;
+
+public interface IGeometrySource
+{
+    bool InvalidateGeometry(InvalidateGeometryReasons reasons);
+
+    bool UpdateGeometry(IGeometrySourceParameters parameters, Rect layoutBounds);
+
+    System.Windows.Media.Geometry Geometry { get; }
+
+    Rect LayoutBounds { get; }
+
+    Rect LogicalBounds { get; }
+}