Introduce FontFamily.Parse

src/Avalonia.Visuals/Media/FontFamily.cs

@@ -60,5 +60,50 @@ namespace Avalonia.Media
 
             return Name;
         }
+
+        /// <summary>
+        /// Parses a <see cref="FontFamily"/> string.
+        /// </summary>
+        /// <param name="s">The <see cref="FontFamily"/> string.</param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentException">
+        /// Specified family is not supported.
+        /// </exception>
+        public static FontFamily Parse(string s)
+        {
+            if (string.IsNullOrEmpty(s)) throw new ArgumentException("Specified family is not supported.");
+
+            var fontFamilyExpression = s.Split('#');
+
+            if (fontFamilyExpression.Length == 1)
+            {
+                return new FontFamily(s);
+            }
+
+            string familyName;
+
+            Uri source = null;
+
+            switch (fontFamilyExpression.Length)
+            {
+                case 1:
+                {
+                    familyName = fontFamilyExpression[0];
+                    break;
+                }
+                case 2:
+                {
+                    source = new Uri(fontFamilyExpression[0], UriKind.RelativeOrAbsolute);
+                    familyName = fontFamilyExpression[1];
+                    break;
+                }
+                default:
+                {
+                    throw new ArgumentException("Specified family is not supported.");
+                }
+            }
+
+            return new FontFamily(familyName, source);
+        }
     }
 }

src/Markup/Avalonia.Markup.Xaml/Converters/FontFamilyTypeConverter.cs

@@ -14,41 +14,7 @@ namespace Avalonia.Markup.Xaml.Converters
 
         public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
         {
-            var s = (string)value;
-
-            if (string.IsNullOrEmpty(s)) throw new ArgumentException("Specified family is not supported.");
-
-            var fontFamilyExpression = s.Split('#');
-
-            if (fontFamilyExpression.Length == 1)
-            {
-                return new FontFamily(s);
-            }
-
-            string familyName;
-
-            Uri source = null;
-
-            switch (fontFamilyExpression.Length)
-            {
-                case 1:
-                    {
-                        familyName = fontFamilyExpression[0];
-                        break;
-                    }
-                case 2:
-                    {
-                        source = new Uri(fontFamilyExpression[0], UriKind.RelativeOrAbsolute);
-                        familyName = fontFamilyExpression[1];
-                        break;
-                    }
-                default:
-                    {
-                        throw new ArgumentException("Specified family is not supported.");
-                    }
-            }
-
-            return new FontFamily(familyName, source);
+            return FontFamily.Parse((string)value);
         }
     }
 }

src/Markup/Avalonia.Markup.Xaml/PortableXaml/portable.xaml.github

@@ -1 +1 @@
-Subproject commit cdf46d7892def8a6ba29f12a9339147377f7cf5c
+Subproject commit c0664014455392ac221a765e66f9837704339b6f