[hyena/gtk3] CairoExtensions: Add GdkRGBAToCairoColor utility method

[Bertrand Lorentz <blorentz src gnome org>]

commit 4ffad0a5599c999d9579abfcce83f3143236d49a
Author: Bertrand Lorentz <bertrand lorentz gmail com>
Date:   Mon Jul 4 21:27:17 2011 +0200

    CairoExtensions: Add GdkRGBAToCairoColor utility method

 Hyena.Gui/Hyena.Gui/CairoExtensions.cs |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/Hyena.Gui/Hyena.Gui/CairoExtensions.cs b/Hyena.Gui/Hyena.Gui/CairoExtensions.cs
index 5f0d077..811f129 100644
--- a/Hyena.Gui/Hyena.Gui/CairoExtensions.cs
+++ b/Hyena.Gui/Hyena.Gui/CairoExtensions.cs
@@ -97,6 +97,11 @@ namespace Hyena.Gui
                 alpha);
         }
 
+        public static Cairo.Color GdkRGBAToCairoColor (Gdk.RGBA rgba)
+        {
+            return new Cairo.Color (rgba.Red, rgba.Green, rgba.Blue, rgba.Alpha);
+        }
+
         public static Cairo.Color RgbToColor (uint rgbColor)
         {
             return RgbaToColor ((rgbColor << 8) | 0x000000ff);