Added missing properties to FormattedText.

Also use a switch for TextAlignment.ToDirect2D.

Perspex.SceneGraph/Media/FormattedText.cs

@@ -25,6 +25,8 @@ namespace Perspex.Media
             this.FontFamilyName = fontFamilyName;
             this.FontSize = fontSize;
             this.FontStyle = fontStyle;
+            this.FontWeight = fontWeight;
+            this.TextAlignment = textAlignment;
 
             var platform = Locator.Current.GetService<IPlatformRenderInterface>();
 
@@ -61,6 +63,12 @@ namespace Perspex.Media
             private set;
         }
 
+        public FontWeight FontWeight
+        {
+            get;
+            private set;
+        }
+
         public string Text
         {
             get;
@@ -73,6 +81,12 @@ namespace Perspex.Media
             private set;
         }
 
+        public TextAlignment TextAlignment
+        {
+            get;
+            private set;
+        }
+
         public void Dispose()
         {
             this.PlatformImpl.Dispose();

Windows/Perspex.Direct2D1/PrimitiveExtensions.cs

@@ -6,6 +6,7 @@
 
 namespace Perspex.Direct2D1
 {
+    using System;
     using System.Linq;
     using SharpDX;
     using SharpDX.Direct2D1;
@@ -132,13 +133,17 @@ namespace Perspex.Direct2D1
 
         public static DWrite.TextAlignment ToDirect2D(this Perspex.Media.TextAlignment alignment)
         {
-            if (alignment == Perspex.Media.TextAlignment.Left)
-                return DWrite.TextAlignment.Leading;
-
-            if (alignment == Perspex.Media.TextAlignment.Centered)
-                return DWrite.TextAlignment.Center;
-
-            return DWrite.TextAlignment.Trailing;
+            switch (alignment)
+            {
+                case Perspex.Media.TextAlignment.Left:
+                    return DWrite.TextAlignment.Leading;
+                case Perspex.Media.TextAlignment.Centered:
+                    return DWrite.TextAlignment.Center;
+                case Perspex.Media.TextAlignment.Right:
+                    return DWrite.TextAlignment.Trailing;
+                default:
+                    throw new InvalidOperationException("Invalid TextAlignment");
+            }
         }
     }
 }