From 1322fd11d0f1f2fa9cf104e7ca6fc7d0cd16f906 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Tue, 15 Sep 2015 00:49:04 +0200
Subject: [PATCH] Use -1 for infinite width in pango layout.

---
 src/Gtk/Perspex.Cairo/Media/FormattedTextImpl.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Gtk/Perspex.Cairo/Media/FormattedTextImpl.cs b/src/Gtk/Perspex.Cairo/Media/FormattedTextImpl.cs
index ac71e14e02..509ace45dc 100644
--- a/src/Gtk/Perspex.Cairo/Media/FormattedTextImpl.cs
+++ b/src/Gtk/Perspex.Cairo/Media/FormattedTextImpl.cs
@@ -45,7 +45,8 @@ namespace Perspex.Cairo.Media
             set
             {
                 _size = value;
-                Layout.Width = Pango.Units.FromDouble(value.Width);
+                Layout.Width = double.IsPositiveInfinity(value.Width) ? 
+                    -1 : Pango.Units.FromDouble(value.Width);
             }
         }