From e8ac3aa02db68046596df5e7ee1d7987158b33a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Perneky=20L=C3=A1szl=C3=B3?= <laszlo.perneky@hotmail.com>
Date: Wed, 11 Oct 2017 12:42:03 +0200
Subject: [PATCH] Added support for external renderers. (#431)

---
 .../Visuals/Flat/FlatGuiVisualizer.cs                | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Source/MonoGame.Extended.NuclexGui/Visuals/Flat/FlatGuiVisualizer.cs b/Source/MonoGame.Extended.NuclexGui/Visuals/Flat/FlatGuiVisualizer.cs
index f2145842..4bbdcfcd 100644
--- a/Source/MonoGame.Extended.NuclexGui/Visuals/Flat/FlatGuiVisualizer.cs
+++ b/Source/MonoGame.Extended.NuclexGui/Visuals/Flat/FlatGuiVisualizer.cs
@@ -30,6 +30,9 @@ namespace MonoGame.Extended.NuclexGui.Visuals.Flat
         /// <summary>Avaiable renderers</summary>
         private readonly Dictionary<Type, IControlRendererAdapter> _renderers;
 
+        /// <summary>Assemblies which has renderer implementations</summary>
+        public static readonly List<Assembly> ExternalAssembliesWithRenderers = new List<Assembly>();
+
         /// <summary>Initializes a new gui painter for traditional GUIs</summary>
         /// <param name="contentManager">Content manager that will be used to load the skin resources</param>
         /// <param name="skinStream">Stream from which the GUI Visualizer will read the skin description</param>
@@ -118,10 +121,17 @@ namespace MonoGame.Extended.NuclexGui.Visuals.Flat
         }
 
         private void FetchRenderers()
+        {
+            FetchRenderers(typeof(FlatGuiVisualizer).GetTypeInfo().Assembly);
+            foreach(var assembly in ExternalAssembliesWithRenderers)
+                FetchRenderers(assembly);
+        }
+
+        private void FetchRenderers(Assembly assembly)
         {
             foreach (
                 var typeinfo in
-                typeof(FlatGuiVisualizer).GetTypeInfo().Assembly.DefinedTypes.Where(e => e.IsPublic && !e.IsAbstract))
+                assembly.DefinedTypes.Where(e => e.IsPublic && !e.IsAbstract))
             {
                 // If the type doesn't implement the IFlatcontrolRenderer interface, there's
                 // no chance that it will implement one of the generic control drawers