From a9f820470b8a0df72291b99e66ea14e0dc8c2164 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 29 Dec 2019 17:13:18 +0100
Subject: [PATCH] fix some const correctness

---
 src/Gui/View3DInventorViewer.cpp    | 2 +-
 src/Gui/ViewProvider.h              | 6 +++---
 src/Gui/ViewProviderPythonFeature.h | 2 +-
 src/Mod/Mesh/Gui/ViewProvider.h     | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index 9e5e745a4089..42374ed80a48 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -971,7 +971,7 @@ SbBool View3DInventorViewer::hasViewProvider(ViewProvider* pcProvider) const
 SbBool View3DInventorViewer::containsViewProvider(const ViewProvider* vp) const
 {
     SoSearchAction sa;
-    sa.setNode(const_cast<ViewProvider*>(vp)->getRoot());
+    sa.setNode(vp->getRoot());
     sa.setSearchingAll(true);
     sa.apply(getSoRenderManager()->getSceneGraph());
     return sa.getPath() != nullptr;
diff --git a/src/Gui/ViewProvider.h b/src/Gui/ViewProvider.h
index c6872254bcaa..849b05b73e49 100644
--- a/src/Gui/ViewProvider.h
+++ b/src/Gui/ViewProvider.h
@@ -128,10 +128,10 @@ class GuiExport ViewProvider : public App::TransactionalObject
     virtual ~ViewProvider();
 
     // returns the root node of the Provider (3D)
-    virtual SoSeparator* getRoot(void){return pcRoot;}
+    virtual SoSeparator* getRoot(void) const {return pcRoot;}
     // return the mode switch node of the Provider (3D)
-    SoSwitch *getModeSwitch(void){return pcModeSwitch;}
-    SoTransform *getTransformNode(){return pcTransform;}
+    SoSwitch *getModeSwitch(void) const {return pcModeSwitch;}
+    SoTransform *getTransformNode() const {return pcTransform;}
     // returns the root for the Annotations.
     SoSeparator* getAnnotation(void);
     // returns the root node of the Provider (3D)
diff --git a/src/Gui/ViewProviderPythonFeature.h b/src/Gui/ViewProviderPythonFeature.h
index 931e86e0ba4d..45ed27095f19 100644
--- a/src/Gui/ViewProviderPythonFeature.h
+++ b/src/Gui/ViewProviderPythonFeature.h
@@ -223,7 +223,7 @@ class ViewProviderPythonFeatureT : public ViewProviderT
 
     /** @name Nodes */
     //@{
-    virtual SoSeparator* getRoot() override {
+    virtual SoSeparator* getRoot() const override {
         return ViewProviderT::getRoot();
     }
     virtual SoSeparator* getFrontRoot() const override {
diff --git a/src/Mod/Mesh/Gui/ViewProvider.h b/src/Mod/Mesh/Gui/ViewProvider.h
index 2026d0dc678a..4ac5979a9938 100644
--- a/src/Mod/Mesh/Gui/ViewProvider.h
+++ b/src/Mod/Mesh/Gui/ViewProvider.h
@@ -96,7 +96,7 @@ class MeshGuiExport ViewProviderExport : public Gui::ViewProviderDocumentObject
     virtual ~ViewProviderExport();
 
     virtual QIcon getIcon() const;
-    SoSeparator* getRoot(void){return 0;}
+    SoSeparator* getRoot(void) const {return nullptr;}
     std::vector<std::string> getDisplayModes(void) const;
     const char* getDefaultDisplayMode() const;
 };