From cc2fa957d9771032a8a86ba95bb3bf2c7f758980 Mon Sep 17 00:00:00 2001
From: John Lewin <lewin76@gmail.com>
Date: Wed, 20 Jun 2018 16:28:10 -0700
Subject: [PATCH] Allow non-MeshContent providers to supply thumbnails

---
 Library/Widgets/ListView/ListViewItemBase.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Library/Widgets/ListView/ListViewItemBase.cs b/Library/Widgets/ListView/ListViewItemBase.cs
index 039db946c..d30ff7c51 100644
--- a/Library/Widgets/ListView/ListViewItemBase.cs
+++ b/Library/Widgets/ListView/ListViewItemBase.cs
@@ -112,6 +112,18 @@ namespace MatterHackers.MatterControl.CustomWidgets
 						// Schedule work
 						this.ScheduleRaytraceOperation();
 					}
+					else
+					{
+						// Show processing image
+						this.SetItemThumbnail(generatingThumbnailIcon, raytracedImage: false);
+
+						// Ask the provider for a content specific thumbnail
+						await contentProvider.GetThumbnail(
+							libraryItem,
+							thumbWidth,
+							thumbHeight,
+							this.SetItemThumbnail);
+					}
 				}
 			}