1 files changed, 82 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.iOS/Renderers/FormattedStringExtensions.cs b/Xamarin.Forms.Platform.iOS/Renderers/FormattedStringExtensions.cs
new file mode 100644
index 00000000..0dfa38cd
--- /dev/null
+++ b/Xamarin.Forms.Platform.iOS/Renderers/FormattedStringExtensions.cs
@@ -0,0 +1,82 @@
+#if __UNIFIED__
+using Foundation;
+using UIKit;
+
+#else
+using MonoTouch.Foundation;
+using MonoTouch.UIKit;
+#endif
+
+namespace Xamarin.Forms.Platform.iOS
+{
+	public static class FormattedStringExtensions
+	{
+		public static NSAttributedString ToAttributed(this Span span, Font defaultFont, Color defaultForegroundColor)
+		{
+			if (span == null)
+				return null;
+
+			var font = span.Font != Font.Default ? span.Font : defaultFont;
+
+			var fgcolor = span.ForegroundColor;
+			if (fgcolor.IsDefault)
+				fgcolor = defaultForegroundColor;
+			if (fgcolor.IsDefault)
+				fgcolor = Color.Black; // as defined by apple docs		
+
+			return new NSAttributedString(span.Text, font == Font.Default ? null : font.ToUIFont(), fgcolor.ToUIColor(), span.BackgroundColor.ToUIColor());
+		}
+
+		public static NSAttributedString ToAttributed(this FormattedString formattedString, Font defaultFont, Color defaultForegroundColor)
+		{
+			if (formattedString == null)
+				return null;
+			var attributed = new NSMutableAttributedString();
+			foreach (var span in formattedString.Spans)
+			{
+				if (span.Text == null)
+					continue;
+
+				attributed.Append(span.ToAttributed(defaultFont, defaultForegroundColor));
+			}
+
+			return attributed;
+		}
+
+		internal static NSAttributedString ToAttributed(this Span span, Element owner, Color defaultForegroundColor)
+		{
+			if (span == null)
+				return null;
+
+			UIFont targetFont;
+			if (span.IsDefault())
+				targetFont = ((IFontElement)owner).ToUIFont();
+			else
+				targetFont = span.ToUIFont();
+
+			var fgcolor = span.ForegroundColor;
+			if (fgcolor.IsDefault)
+				fgcolor = defaultForegroundColor;
+			if (fgcolor.IsDefault)
+				fgcolor = Color.Black; // as defined by apple docs
+
+			return new NSAttributedString(span.Text, targetFont, fgcolor.ToUIColor(), span.BackgroundColor.ToUIColor());
+		}
+
+		internal static NSAttributedString ToAttributed(this FormattedString formattedString, Element owner, Color defaultForegroundColor)
+		{
+			if (formattedString == null)
+				return null;
+			var attributed = new NSMutableAttributedString();
+			foreach (var span in formattedString.Spans)
+			{
+				if (span.Text == null)
+					continue;
+
+				attributed.Append(span.ToAttributed(owner, defaultForegroundColor));
+			}
+
+			return attributed;
+		}
+	}
+}
+\ No newline at end of file