From 5fb7b2e12ce277ea47d5fe185a8f255fcf41cb10 Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Mon, 9 Dec 2013 23:13:45 +0100
Subject: [PATCH] Canvas: Now only one global SystemAdapter is used...

---
 src/Canvas/FGCanvasSystemAdapter.cxx | 3 ++-
 src/Canvas/canvas_mgr.cxx            | 7 +------
 src/Cockpit/od_gauge.cxx             | 7 +------
 src/Main/fg_init.cxx                 | 5 +++++
 4 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/src/Canvas/FGCanvasSystemAdapter.cxx b/src/Canvas/FGCanvasSystemAdapter.cxx
index 0471118dd..ad774fd43 100644
--- a/src/Canvas/FGCanvasSystemAdapter.cxx
+++ b/src/Canvas/FGCanvasSystemAdapter.cxx
@@ -71,7 +71,8 @@ namespace canvas
   //----------------------------------------------------------------------------
   void FGCanvasSystemAdapter::removeCamera(osg::Camera* camera) const
   {
-    globals->get_renderer()->removeCamera(camera);
+    if( globals->get_renderer() )
+      globals->get_renderer()->removeCamera(camera);
   }
 
   //----------------------------------------------------------------------------
diff --git a/src/Canvas/canvas_mgr.cxx b/src/Canvas/canvas_mgr.cxx
index 6bef1f476..27c4290b6 100644
--- a/src/Canvas/canvas_mgr.cxx
+++ b/src/Canvas/canvas_mgr.cxx
@@ -18,7 +18,6 @@
 
 #include "canvas_mgr.hxx"
 
-#include <Canvas/FGCanvasSystemAdapter.hxx>
 #include <Cockpit/od_gauge.hxx>
 #include <Main/fg_props.hxx>
 #include <Scripting/NasalModelData.hxx>
@@ -57,11 +56,7 @@ static sc::Placements addSceneObjectPlacement( SGPropertyNode* placement,
 
 //------------------------------------------------------------------------------
 CanvasMgr::CanvasMgr():
-  simgear::canvas::CanvasMgr
-  (
-   fgGetNode("/canvas/by-index", true),
-   sc::SystemAdapterPtr( new canvas::FGCanvasSystemAdapter )
-  ),
+  simgear::canvas::CanvasMgr( fgGetNode("/canvas/by-index", true) ),
   _cb_model_reinit
   (
     this,
diff --git a/src/Cockpit/od_gauge.cxx b/src/Cockpit/od_gauge.cxx
index 5cae2fb8e..883a17178 100644
--- a/src/Cockpit/od_gauge.cxx
+++ b/src/Cockpit/od_gauge.cxx
@@ -48,21 +48,16 @@
 #include <simgear/scene/material/EffectGeode.hxx>
 #include <simgear/scene/util/RenderConstants.hxx>
 
-#include <Canvas/FGCanvasSystemAdapter.hxx>
 #include <Main/globals.hxx>
 #include <Scenery/scenery.hxx>
 #include "od_gauge.hxx"
 
 #include <cassert>
 
-static simgear::canvas::SystemAdapterPtr system_adapter(
-  new canvas::FGCanvasSystemAdapter
-);
-
 //------------------------------------------------------------------------------
 FGODGauge::FGODGauge()
 {
-  setSystemAdapter(system_adapter);
+
 }
 
 //------------------------------------------------------------------------------
diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index e33c1aebd..0278fe03f 100644
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -50,6 +50,7 @@
 
 #include <osgViewer/Viewer>
 
+#include <simgear/canvas/Canvas.hxx>
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/structure/exception.hxx>
@@ -88,6 +89,7 @@
 
 #include <Canvas/canvas_mgr.hxx>
 #include <Canvas/gui_mgr.hxx>
+#include <Canvas/FGCanvasSystemAdapter.hxx>
 #include <GUI/new_gui.hxx>
 #include <GUI/MessageBox.hxx>
 #include <Input/input.hxx>
@@ -693,6 +695,9 @@ void fgCreateSubsystems(bool duringReset) {
     ////////////////////////////////////////////////////////////////////
     // Initialize the canvas 2d drawing subsystem.
     ////////////////////////////////////////////////////////////////////
+    simgear::canvas::Canvas::setSystemAdapter(
+      simgear::canvas::SystemAdapterPtr(new canvas::FGCanvasSystemAdapter)
+    );
     globals->add_subsystem("Canvas", new CanvasMgr, SGSubsystemMgr::DISPLAY);
     globals->add_subsystem("CanvasGUI", new GUIMgr, SGSubsystemMgr::DISPLAY);
 
-- 
2.39.5