From 4f0cae93d21fa3ac3f98feb149bfe79b78161329 Mon Sep 17 00:00:00 2001
From: dfighter1985 <devnull@localhost>
Date: Sun, 15 Jun 2014 19:28:57 +0200
Subject: [PATCH] Activate the driver when getting a show event, and clear the
 GUI Editor display widget when there's no GUI loaded.

---
 code/studio/src/plugins/gui_editor/nel3d_widget.cpp | 7 +++++++
 code/studio/src/plugins/gui_editor/nel3d_widget.h   | 2 ++
 code/studio/src/plugins/gui_editor/nelgui_ctrl.cpp  | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/code/studio/src/plugins/gui_editor/nel3d_widget.cpp b/code/studio/src/plugins/gui_editor/nel3d_widget.cpp
index 5be8bacb8..1e030db25 100644
--- a/code/studio/src/plugins/gui_editor/nel3d_widget.cpp
+++ b/code/studio/src/plugins/gui_editor/nel3d_widget.cpp
@@ -102,6 +102,13 @@ namespace GUIEditor
 		driver->swapBuffers();
 	}
 
+	void Nel3DWidget::showEvent( QShowEvent *evnt )
+	{
+		QWidget::showEvent( evnt );
+
+		if( driver != NULL )
+			driver->activate();
+	}
 
 #if defined ( NL_OS_WINDOWS )
 
diff --git a/code/studio/src/plugins/gui_editor/nel3d_widget.h b/code/studio/src/plugins/gui_editor/nel3d_widget.h
index 07a74b8c3..e2d5f00b6 100644
--- a/code/studio/src/plugins/gui_editor/nel3d_widget.h
+++ b/code/studio/src/plugins/gui_editor/nel3d_widget.h
@@ -55,6 +55,8 @@ namespace GUIEditor
 
 	protected:
 
+		void showEvent( QShowEvent *evnt );
+
 #if defined(NL_OS_WINDOWS)
 	virtual bool winEvent( MSG *message, long *result );
 #elif defined(NL_OS_MAC)
diff --git a/code/studio/src/plugins/gui_editor/nelgui_ctrl.cpp b/code/studio/src/plugins/gui_editor/nelgui_ctrl.cpp
index 4e72ba614..72bb9524f 100644
--- a/code/studio/src/plugins/gui_editor/nelgui_ctrl.cpp
+++ b/code/studio/src/plugins/gui_editor/nelgui_ctrl.cpp
@@ -153,6 +153,10 @@ namespace GUIEditor
 				w->getDriver()->EventServer.pump();
 				draw();
 			}
+			else
+			{
+				w->clear();
+			}
 		}
 	}