loplugin:constparams in chart2

Change-Id: Ic325b79f04e04aa19e08a60db30b982d90f04c80
Reviewed-on: https://gerrit.libreoffice.org/40480
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

49 files changed, 103 insertions, 100 deletions

diff --git a/chart2/source/controller/dialogs/dlg_DataEditor.cxx b/chart2/source/controller/dialogs/dlg_DataEditor.cxx
index 441b62e774ef..7a8019e0fa43 100644
--- a/chart2/source/controller/dialogs/dlg_DataEditor.cxx
+++ b/chart2/source/controller/dialogs/dlg_DataEditor.cxx
@@ -201,7 +201,7 @@ bool DataEditor::ApplyChangesToModel()
 // travels/no longer travels over this window.  _rMemFunc may be
 // TaskPaneList::AddWindow or TaskPaneList::RemoveWindow
 void DataEditor::notifySystemWindow(
-    vcl::Window* pWindow, vcl::Window* pToRegister,
+    vcl::Window const * pWindow, vcl::Window* pToRegister,
     const ::comphelper::mem_fun1_t<TaskPaneList, vcl::Window*>& rMemFunc )
 {
     OSL_ENSURE( pWindow, "Window must not be null!" );
diff --git a/chart2/source/controller/dialogs/tp_3D_SceneAppearance.cxx b/chart2/source/controller/dialogs/tp_3D_SceneAppearance.cxx
index 8fa025917989..9863f5ea615e 100644
--- a/chart2/source/controller/dialogs/tp_3D_SceneAppearance.cxx
+++ b/chart2/source/controller/dialogs/tp_3D_SceneAppearance.cxx
@@ -44,7 +44,7 @@ struct lcl_ModelProperties
     {}
 };
 
-lcl_ModelProperties lcl_getPropertiesFromModel( uno::Reference< frame::XModel > & xModel )
+lcl_ModelProperties lcl_getPropertiesFromModel( uno::Reference< frame::XModel > const & xModel )
 {
     lcl_ModelProperties aProps;
     try
@@ -62,7 +62,7 @@ lcl_ModelProperties lcl_getPropertiesFromModel( uno::Reference< frame::XModel >
     return aProps;
 }
 
-void lcl_setShadeModeAtModel( uno::Reference< frame::XModel > & xModel, drawing::ShadeMode aShadeMode )
+void lcl_setShadeModeAtModel( uno::Reference< frame::XModel > const & xModel, drawing::ShadeMode aShadeMode )
 {
     try
     {
diff --git a/chart2/source/controller/dialogs/tp_DataSource.cxx b/chart2/source/controller/dialogs/tp_DataSource.cxx
index 0d0e1cdef9d7..14d99d672ce3 100644
--- a/chart2/source/controller/dialogs/tp_DataSource.cxx
+++ b/chart2/source/controller/dialogs/tp_DataSource.cxx
@@ -115,7 +115,7 @@ OUString lcl_GetSelectedRolesRange( const SvTabListBox & rRoleListBox )
     return aResult;
 }
 
-OUString lcl_GetSequenceNameForLabel( ::chart::SeriesEntry * pEntry )
+OUString lcl_GetSequenceNameForLabel( ::chart::SeriesEntry const * pEntry )
 {
     OUString aResult( "values-y" );
     if( pEntry &&
diff --git a/chart2/source/controller/drawinglayer/DrawViewWrapper.cxx b/chart2/source/controller/drawinglayer/DrawViewWrapper.cxx
index a683b2892368..1898a18797b3 100644
--- a/chart2/source/controller/drawinglayer/DrawViewWrapper.cxx
+++ b/chart2/source/controller/drawinglayer/DrawViewWrapper.cxx
@@ -49,7 +49,7 @@ namespace chart
 
 namespace
 {
-    short lcl_getHitTolerance( OutputDevice* pOutDev )
+    short lcl_getHitTolerance( OutputDevice const * pOutDev )
     {
         const short HITPIX=2; //hit-tolerance in pixel
         short nHitTolerance = 50;
@@ -307,7 +307,7 @@ SdrObject* DrawViewWrapper::getNamedSdrObject( const OUString& rName ) const
     return nullptr;
 }
 
-bool DrawViewWrapper::IsObjectHit( SdrObject* pObj, const Point& rPnt )
+bool DrawViewWrapper::IsObjectHit( SdrObject const * pObj, const Point& rPnt )
 {
     if(pObj)
     {
diff --git a/chart2/source/controller/inc/ChartController.hxx b/chart2/source/controller/inc/ChartController.hxx
index 19ac675b14ae..29f74ad358e2 100644
--- a/chart2/source/controller/inc/ChartController.hxx
+++ b/chart2/source/controller/inc/ChartController.hxx
@@ -530,7 +530,7 @@ private:
     css::uno::Reference< css::accessibility::XAccessibleContext >
         impl_createAccessibleTextContext();
 
-    void impl_PasteGraphic( css::uno::Reference< css::graphic::XGraphic > & xGraphic,
+    void impl_PasteGraphic( css::uno::Reference< css::graphic::XGraphic > const & xGraphic,
                             const ::Point & aPosition );
     void impl_PasteShapes( SdrModel* pModel );
     void impl_PasteStringAsTextShape( const OUString& rString, const css::awt::Point& rPosition );
diff --git a/chart2/source/controller/inc/DrawViewWrapper.hxx b/chart2/source/controller/inc/DrawViewWrapper.hxx
index 1561fd6819ef..91ffdf7eeb1b 100644
--- a/chart2/source/controller/inc/DrawViewWrapper.hxx
+++ b/chart2/source/controller/inc/DrawViewWrapper.hxx
@@ -76,7 +76,7 @@ public:
     SfxItemSet   getPositionAndSizeItemSetFromMarkedObject() const;
 
     SdrObject* getNamedSdrObject( const OUString& rName ) const;
-    static bool IsObjectHit( SdrObject* pObj, const Point& rPnt );
+    static bool IsObjectHit( SdrObject const * pObj, const Point& rPnt );
 
     virtual void Notify(SfxBroadcaster& rBC, const SfxHint& rHint) override;
 
diff --git a/chart2/source/controller/inc/SelectionHelper.hxx b/chart2/source/controller/inc/SelectionHelper.hxx
index e6257a0e6044..b1c0c8cbef7e 100644
--- a/chart2/source/controller/inc/SelectionHelper.hxx
+++ b/chart2/source/controller/inc/SelectionHelper.hxx
@@ -59,7 +59,7 @@ public: //methods
     void remindSelectionBeforeMouseDown();
     bool isSelectionDifferentFromBeforeMouseDown() const;
 
-    void adaptSelectionToNewPos( const Point& rMousePos, DrawViewWrapper* pDrawViewWrapper
+    void adaptSelectionToNewPos( const Point& rMousePos, DrawViewWrapper const * pDrawViewWrapper
                                        , bool bIsRightMouse, bool bWaitingForDoubleClick );
 
     void applySelection( DrawViewWrapper* pDrawViewWrapper );
@@ -92,7 +92,7 @@ public:
 
     static OUString getHitObjectCID(
         const Point& rMPos,
-        DrawViewWrapper& rDrawViewWrapper,
+        DrawViewWrapper const & rDrawViewWrapper,
         bool bGetDiagramInsteadOf_Wall=false );
 
     static bool isRotateableObject( const OUString& rCID
diff --git a/chart2/source/controller/inc/dlg_DataEditor.hxx b/chart2/source/controller/inc/dlg_DataEditor.hxx
index d6e085899e4c..c6f74d6797b1 100644
--- a/chart2/source/controller/inc/dlg_DataEditor.hxx
+++ b/chart2/source/controller/inc/dlg_DataEditor.hxx
@@ -90,7 +90,7 @@ private:
 
         @note this code is taken from dbaccess/source/ui/inc/UITools.hxx
     */
-    static void notifySystemWindow(vcl::Window* pWindow,
+    static void notifySystemWindow(vcl::Window const * pWindow,
                             vcl::Window* pToRegister,
                             const ::comphelper::mem_fun1_t<TaskPaneList, vcl::Window*>& rMemFunc);
 };
diff --git a/chart2/source/controller/main/ChartController_Properties.cxx b/chart2/source/controller/main/ChartController_Properties.cxx
index fcbfc3073f06..de3eebd88e76 100644
--- a/chart2/source/controller/main/ChartController_Properties.cxx
+++ b/chart2/source/controller/main/ChartController_Properties.cxx
@@ -71,7 +71,7 @@ namespace
 wrapper::ItemConverter* createItemConverter(
     const OUString & aObjectCID, const uno::Reference<frame::XModel>& xChartModel,
     const uno::Reference<uno::XComponentContext>& xContext, SdrModel& rDrawModel,
-    ExplicitValueProvider* pExplicitValueProvider, ReferenceSizeProvider* pRefSizeProvider )
+    ExplicitValueProvider* pExplicitValueProvider, ReferenceSizeProvider const * pRefSizeProvider )
 {
     wrapper::ItemConverter* pItemConverter=nullptr;
 
diff --git a/chart2/source/controller/main/ChartController_Tools.cxx b/chart2/source/controller/main/ChartController_Tools.cxx
index 38772a491eea..860cdde2bb9c 100644
--- a/chart2/source/controller/main/ChartController_Tools.cxx
+++ b/chart2/source/controller/main/ChartController_Tools.cxx
@@ -327,7 +327,7 @@ void ChartController::executeDispatch_Paste()
 // note: aPosition is ignored for now. The object is always pasted centered to
 // the page
 void ChartController::impl_PasteGraphic(
-    uno::Reference< graphic::XGraphic > & xGraphic,
+    uno::Reference< graphic::XGraphic > const & xGraphic,
     const ::Point & /* aPosition */ )
 {
     DBG_TESTSOLARMUTEX();
diff --git a/chart2/source/controller/main/ChartController_Window.cxx b/chart2/source/controller/main/ChartController_Window.cxx
index e33db229fc59..dbbccd268591 100644
--- a/chart2/source/controller/main/ChartController_Window.cxx
+++ b/chart2/source/controller/main/ChartController_Window.cxx
@@ -109,7 +109,7 @@ bool lcl_GrowAndShiftLogic(
 
 bool lcl_MoveObjectLogic(
     RelativePosition &  rInOutRelPos,
-    RelativeSize &      rObjectSize,
+    RelativeSize const & rObjectSize,
     const awt::Size &   rRefSize,
     double              fShiftLogicX,
     double              fShiftLogicY )
diff --git a/chart2/source/controller/main/DrawCommandDispatch.cxx b/chart2/source/controller/main/DrawCommandDispatch.cxx
index 3d3803e4d266..0f281e8037a8 100644
--- a/chart2/source/controller/main/DrawCommandDispatch.cxx
+++ b/chart2/source/controller/main/DrawCommandDispatch.cxx
@@ -75,7 +75,7 @@ bool DrawCommandDispatch::isFeatureSupported( const OUString& rCommandURL )
     return parseCommandURL( rCommandURL, &nFeatureId, &aBaseCommand, &aCustomShapeType );
 }
 
-::basegfx::B2DPolyPolygon getPolygon(const char* pResId, SdrModel& rModel)
+::basegfx::B2DPolyPolygon getPolygon(const char* pResId, SdrModel const & rModel)
 {
     ::basegfx::B2DPolyPolygon aReturn;
     XLineEndListRef pLineEndList = rModel.GetLineEndList();
diff --git a/chart2/source/controller/main/SelectionHelper.cxx b/chart2/source/controller/main/SelectionHelper.cxx
index d77b2d6a2b7c..3d32d23f81de 100644
--- a/chart2/source/controller/main/SelectionHelper.cxx
+++ b/chart2/source/controller/main/SelectionHelper.cxx
@@ -38,7 +38,7 @@ using namespace ::com::sun::star;
 namespace
 {
 
-OUString lcl_getObjectName( SdrObject* pObj )
+OUString lcl_getObjectName( SdrObject const * pObj )
 {
     if(pObj)
        return pObj->GetName();
@@ -156,7 +156,7 @@ void Selection::applySelection( DrawViewWrapper* pDrawViewWrapper )
     }
 }
 
-void Selection::adaptSelectionToNewPos( const Point& rMousePos, DrawViewWrapper* pDrawViewWrapper
+void Selection::adaptSelectionToNewPos( const Point& rMousePos, DrawViewWrapper const * pDrawViewWrapper
                                        , bool bIsRightMouse, bool bWaitingForDoubleClick )
 {
     if( pDrawViewWrapper )
@@ -379,7 +379,7 @@ bool SelectionHelper::isDragableObjectHitTwice( const Point& rMPos
 
 OUString SelectionHelper::getHitObjectCID(
     const Point& rMPos,
-    DrawViewWrapper& rDrawViewWrapper,
+    DrawViewWrapper const & rDrawViewWrapper,
     bool bGetDiagramInsteadOf_Wall )
 {
     SolarMutexGuard aSolarGuard;
diff --git a/chart2/source/controller/uitest/uiobject.cxx b/chart2/source/controller/uitest/uiobject.cxx
index fa04a13d747f..d3c2cfd5cbd0 100644
--- a/chart2/source/controller/uitest/uiobject.cxx
+++ b/chart2/source/controller/uitest/uiobject.cxx
@@ -145,7 +145,7 @@ std::unique_ptr<UIObject> ChartWindowUIObject::get_child(const OUString& rID)
 
 namespace {
 
-void recursiveAdd(chart::ObjectIdentifier& rID, std::set<OUString>& rChildren, const chart::ObjectHierarchy& rHierarchy)
+void recursiveAdd(chart::ObjectIdentifier const & rID, std::set<OUString>& rChildren, const chart::ObjectHierarchy& rHierarchy)
 {
     std::vector<chart::ObjectIdentifier> aChildIndentifiers = rHierarchy.getChildren(rID);
     std::transform(aChildIndentifiers.begin(), aChildIndentifiers.end(), std::inserter(rChildren, rChildren.begin()),
diff --git a/chart2/source/inc/LifeTime.hxx b/chart2/source/inc/LifeTime.hxx
index 5a10d6b73e90..f129a06829d4 100644
--- a/chart2/source/inc/LifeTime.hxx
+++ b/chart2/source/inc/LifeTime.hxx
@@ -94,7 +94,7 @@ OOO_DLLPUBLIC_CHARTTOOLS    bool    impl_isDisposedOrClosed( bool bAssert=true )
 /// @throws css::uno::Exception
 OOO_DLLPUBLIC_CHARTTOOLS    bool    g_close_startTryClose(bool bDeliverOwnership);
 /// @throws css::util::CloseVetoException
-OOO_DLLPUBLIC_CHARTTOOLS    bool    g_close_isNeedToCancelLongLastingCalls( bool bDeliverOwnership, css::util::CloseVetoException& ex );
+OOO_DLLPUBLIC_CHARTTOOLS    bool    g_close_isNeedToCancelLongLastingCalls( bool bDeliverOwnership, css::util::CloseVetoException const & ex );
 OOO_DLLPUBLIC_CHARTTOOLS    void    g_close_endTryClose(bool bDeliverOwnership );
 OOO_DLLPUBLIC_CHARTTOOLS    void    g_close_endTryClose_doClose();
 /// @throws css::uno::RuntimeException
diff --git a/chart2/source/inc/RegressionCurveCalculator.hxx b/chart2/source/inc/RegressionCurveCalculator.hxx
index c5933e55aa11..18c220f981be 100644
--- a/chart2/source/inc/RegressionCurveCalculator.hxx
+++ b/chart2/source/inc/RegressionCurveCalculator.hxx
@@ -52,7 +52,7 @@ protected:
         double fNumber,
         const sal_Int32* pStringLength );
 
-    static void addStringToEquation( OUStringBuffer& aStrEquation, sal_Int32& nLineLength, OUStringBuffer& aAddString, const sal_Int32* pMaxLength );
+    static void addStringToEquation( OUStringBuffer& aStrEquation, sal_Int32& nLineLength, OUStringBuffer const & aAddString, const sal_Int32* pMaxLength );
 
     double m_fCorrelationCoeffitient;
 
diff --git a/chart2/source/inc/RegressionCurveHelper.hxx b/chart2/source/inc/RegressionCurveHelper.hxx
index 46ee61e4e0df..f268de036a8b 100644
--- a/chart2/source/inc/RegressionCurveHelper.hxx
+++ b/chart2/source/inc/RegressionCurveHelper.hxx
@@ -60,11 +60,11 @@ namespace RegressionCurveHelper
              If set, this property-set will be used to apply a line color
      */
     OOO_DLLPUBLIC_CHARTTOOLS void addMeanValueLine(
-        css::uno::Reference<css::chart2::XRegressionCurveContainer>& xRegCnt,
+        css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xRegCnt,
         const css::uno::Reference<css::beans::XPropertySet>& xSeriesProp );
 
     OOO_DLLPUBLIC_CHARTTOOLS void removeMeanValueLine(
-        css::uno::Reference<css::chart2::XRegressionCurveContainer>& xRegCnt );
+        css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xRegCnt );
 
     /** Returns the first regression curve found that is not of type
         mean-value line
@@ -97,7 +97,7 @@ namespace RegressionCurveHelper
     OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference<css::chart2::XRegressionCurve>
         addRegressionCurve(
             SvxChartRegress eType,
-            css::uno::Reference<css::chart2::XRegressionCurveContainer>& xCurveContainer,
+            css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xCurveContainer,
             const css::uno::Reference<css::uno::XComponentContext>& xContext,
             const css::uno::Reference<css::beans::XPropertySet >& xPropertySource =
                     css::uno::Reference<css::beans::XPropertySet>(),
@@ -105,16 +105,16 @@ namespace RegressionCurveHelper
                     css::uno::Reference<css::beans::XPropertySet>() );
 
     OOO_DLLPUBLIC_CHARTTOOLS bool removeAllExceptMeanValueLine(
-        css::uno::Reference<css::chart2::XRegressionCurveContainer>& xCurveContainer );
+        css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xCurveContainer );
 
     OOO_DLLPUBLIC_CHARTTOOLS void removeEquations(
-        css::uno::Reference<css::chart2::XRegressionCurveContainer>& xCurveContainer );
+        css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xCurveContainer );
 
     OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference<css::chart2::XRegressionCurve>
         changeRegressionCurveType(
             SvxChartRegress eType,
-            css::uno::Reference<css::chart2::XRegressionCurveContainer>& xRegressionCurveContainer,
-            css::uno::Reference<css::chart2::XRegressionCurve>& xRegressionCurve,
+            css::uno::Reference<css::chart2::XRegressionCurveContainer> const & xRegressionCurveContainer,
+            css::uno::Reference<css::chart2::XRegressionCurve> const & xRegressionCurve,
             const css::uno::Reference<css::uno::XComponentContext>& xContext );
 
     /// returns a calculator object for regression curves (used by the view)
diff --git a/chart2/source/inc/StatisticsHelper.hxx b/chart2/source/inc/StatisticsHelper.hxx
index f6410936ca3d..838c3bd59728 100644
--- a/chart2/source/inc/StatisticsHelper.hxx
+++ b/chart2/source/inc/StatisticsHelper.hxx
@@ -67,7 +67,7 @@ namespace StatisticsHelper
         const OUString & rNewRange,
         bool bPositiveValue,
         bool bYError = true,
-        OUString * pXMLRange = nullptr );
+        OUString const * pXMLRange = nullptr );
 
     /// @return the newly created or existing error bar object
     OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference< css::beans::XPropertySet >
diff --git a/chart2/source/inc/chartview/DrawModelWrapper.hxx b/chart2/source/inc/chartview/DrawModelWrapper.hxx
index 5c1852bc1236..c0dc7422a03f 100644
--- a/chart2/source/inc/chartview/DrawModelWrapper.hxx
+++ b/chart2/source/inc/chartview/DrawModelWrapper.hxx
@@ -82,7 +82,7 @@ public:
     XPatternListRef   GetPatternList() const;
 
     SdrObject* getNamedSdrObject( const OUString& rName );
-    static SdrObject* getNamedSdrObject( const OUString& rName, SdrObjList* pObjList );
+    static SdrObject* getNamedSdrObject( const OUString& rName, SdrObjList const * pObjList );
 
     static bool removeShape( const css::uno::Reference< css::drawing::XShape >& xShape );
 };
diff --git a/chart2/source/model/filter/XMLFilter.cxx b/chart2/source/model/filter/XMLFilter.cxx
index e34e2170f976..f5bddadbc2ee 100644
--- a/chart2/source/model/filter/XMLFilter.cxx
+++ b/chart2/source/model/filter/XMLFilter.cxx
@@ -409,7 +409,7 @@ ErrCode XMLFilter::impl_ImportStream(
     const Reference< xml::sax::XParser > & xParser,
     const Reference< lang::XMultiComponentFactory > & xFactory,
     const Reference< document::XGraphicObjectResolver > & xGraphicObjectResolver,
-    uno::Reference< beans::XPropertySet >& xImportInfo )
+    uno::Reference< beans::XPropertySet > const & xImportInfo )
 {
     ErrCode nWarning = ERRCODE_SFX_GENERAL;
 
diff --git a/chart2/source/model/inc/XMLFilter.hxx b/chart2/source/model/inc/XMLFilter.hxx
index 5eef0f5ac708..85c033c99a7e 100644
--- a/chart2/source/model/inc/XMLFilter.hxx
+++ b/chart2/source/model/inc/XMLFilter.hxx
@@ -106,7 +106,7 @@ private:
         const css::uno::Reference< css::xml::sax::XParser > & xParser,
         const css::uno::Reference< css::lang::XMultiComponentFactory > & xFactory,
         const css::uno::Reference< css::document::XGraphicObjectResolver > & xGraphicObjectResolver,
-        css::uno::Reference< css::beans::XPropertySet >& xPropSet );
+        css::uno::Reference< css::beans::XPropertySet > const & xPropSet );
 
     /// @return a warning code, or 0 for successful operation
     ErrCode impl_Export( const css::uno::Reference< css::lang::XComponent > & xDocumentComp,
diff --git a/chart2/source/tools/LifeTime.cxx b/chart2/source/tools/LifeTime.cxx
index 5df9f8f4715c..38891cad6be9 100644
--- a/chart2/source/tools/LifeTime.cxx
+++ b/chart2/source/tools/LifeTime.cxx
@@ -258,7 +258,7 @@ void CloseableLifeTimeManager::g_close_endTryClose(bool bDeliverOwnership )
     impl_unregisterApiCall(false);
 }
 
-bool CloseableLifeTimeManager::g_close_isNeedToCancelLongLastingCalls( bool bDeliverOwnership, util::CloseVetoException& ex )
+bool CloseableLifeTimeManager::g_close_isNeedToCancelLongLastingCalls( bool bDeliverOwnership, util::CloseVetoException const & ex )
 {
     //this method is called when no closelistener has had a veto during queryclosing
     //the method returns false, if nothing stands against closing anymore
diff --git a/chart2/source/tools/ModifyListenerHelper.cxx b/chart2/source/tools/ModifyListenerHelper.cxx
index c6fd1d604773..79a377441253 100644
--- a/chart2/source/tools/ModifyListenerHelper.cxx
+++ b/chart2/source/tools/ModifyListenerHelper.cxx
@@ -31,7 +31,7 @@ namespace
 {
 
 void lcl_fireModifyEvent(
-    ::cppu::OBroadcastHelper & rBroadcastHelper,
+    ::cppu::OBroadcastHelper const & rBroadcastHelper,
     const Reference< uno::XWeak > & xEventSource,
     const lang::EventObject * pEvent )
 {
diff --git a/chart2/source/tools/RegressionCurveCalculator.cxx b/chart2/source/tools/RegressionCurveCalculator.cxx
index 6f2ab6a64288..4a1dc26a468d 100644
--- a/chart2/source/tools/RegressionCurveCalculator.cxx
+++ b/chart2/source/tools/RegressionCurveCalculator.cxx
@@ -194,7 +194,7 @@ OUString SAL_CALL RegressionCurveCalculator::getFormattedRepresentation(
 }
 
 void RegressionCurveCalculator::addStringToEquation(
-        OUStringBuffer& aStrEquation, sal_Int32& nLineLength, OUStringBuffer& aAddString, const sal_Int32* pMaxWidth)
+        OUStringBuffer& aStrEquation, sal_Int32& nLineLength, OUStringBuffer const & aAddString, const sal_Int32* pMaxWidth)
 {
     if ( pMaxWidth && ( nLineLength + aAddString.getLength() > *pMaxWidth ) )
     {  // wrap line
diff --git a/chart2/source/tools/RegressionCurveHelper.cxx b/chart2/source/tools/RegressionCurveHelper.cxx
index 4a3558d6a38e..5fa4a34076e7 100644
--- a/chart2/source/tools/RegressionCurveHelper.cxx
+++ b/chart2/source/tools/RegressionCurveHelper.cxx
@@ -293,7 +293,7 @@ uno::Reference< chart2::XRegressionCurve >
 }
 
 void RegressionCurveHelper::addMeanValueLine(
-    uno::Reference< XRegressionCurveContainer > & xRegCnt,
+    uno::Reference< XRegressionCurveContainer > const & xRegCnt,
     const uno::Reference< XPropertySet > & xSeriesProp )
 {
     if( !xRegCnt.is() ||
@@ -316,7 +316,7 @@ void RegressionCurveHelper::addMeanValueLine(
 }
 
 void RegressionCurveHelper::removeMeanValueLine(
-    Reference< XRegressionCurveContainer > & xRegCnt )
+    Reference< XRegressionCurveContainer > const & xRegCnt )
 {
     if( !xRegCnt.is())
         return;
@@ -346,7 +346,7 @@ void RegressionCurveHelper::removeMeanValueLine(
 
 uno::Reference< chart2::XRegressionCurve > RegressionCurveHelper::addRegressionCurve(
     SvxChartRegress eType,
-    uno::Reference< XRegressionCurveContainer >& xRegressionCurveContainer,
+    uno::Reference< XRegressionCurveContainer > const & xRegressionCurveContainer,
     const uno::Reference< XComponentContext >& /* xContext */,
     const uno::Reference< beans::XPropertySet >& xPropertySource,
     const uno::Reference< beans::XPropertySet >& xEquationProperties )
@@ -396,7 +396,7 @@ uno::Reference< chart2::XRegressionCurve > RegressionCurveHelper::addRegressionC
     and returns true, if anything was removed
  */
 bool RegressionCurveHelper::removeAllExceptMeanValueLine(
-    uno::Reference< chart2::XRegressionCurveContainer > & xRegCnt )
+    uno::Reference< chart2::XRegressionCurveContainer > const & xRegCnt )
 {
     bool bRemovedSomething = false;
     if( xRegCnt.is())
@@ -430,7 +430,7 @@ bool RegressionCurveHelper::removeAllExceptMeanValueLine(
 }
 
 void RegressionCurveHelper::removeEquations(
-        uno::Reference< chart2::XRegressionCurveContainer > & xRegCnt )
+        uno::Reference< chart2::XRegressionCurveContainer > const & xRegCnt )
 {
     if( xRegCnt.is())
     {
@@ -466,8 +466,8 @@ void RegressionCurveHelper::removeEquations(
 
 uno::Reference< XRegressionCurve > RegressionCurveHelper::changeRegressionCurveType(
     SvxChartRegress eType,
-    uno::Reference< XRegressionCurveContainer > & xRegressionCurveContainer,
-    uno::Reference< XRegressionCurve > & xRegressionCurve,
+    uno::Reference< XRegressionCurveContainer > const & xRegressionCurveContainer,
+    uno::Reference< XRegressionCurve > const & xRegressionCurve,
     const uno::Reference< XComponentContext > & xContext )
 {
     xRegressionCurveContainer->removeRegressionCurve( xRegressionCurve );
diff --git a/chart2/source/tools/StatisticsHelper.cxx b/chart2/source/tools/StatisticsHelper.cxx
index f7f1ff7ef1d8..20e6f92887e9 100644
--- a/chart2/source/tools/StatisticsHelper.cxx
+++ b/chart2/source/tools/StatisticsHelper.cxx
@@ -270,7 +270,7 @@ void StatisticsHelper::setErrorDataSequence(
     const OUString & rNewRange,
     bool bPositiveValue,
     bool bYError /* = true */,
-    OUString * pXMLRange /* = 0 */ )
+    OUString const * pXMLRange /* = 0 */ )
 {
     Reference< chart2::data::XDataSink > xDataSink( xDataSource, uno::UNO_QUERY );
     if( ! ( xDataSink.is() && xDataProvider.is()))
diff --git a/chart2/source/view/axes/VCartesianAxis.cxx b/chart2/source/view/axes/VCartesianAxis.cxx
index 6b355b3734b4..63d50e40e172 100644
--- a/chart2/source/view/axes/VCartesianAxis.cxx
+++ b/chart2/source/view/axes/VCartesianAxis.cxx
@@ -666,7 +666,7 @@ sal_Int32 VCartesianAxis::getTextLevelCount() const
 
 bool VCartesianAxis::createTextShapes(
     const Reference<drawing::XShapes>& xTarget, TickIter& rTickIter,
-    AxisLabelProperties& rAxisLabelProperties, TickFactory2D* pTickFactory,
+    AxisLabelProperties& rAxisLabelProperties, TickFactory2D const * pTickFactory,
     sal_Int32 nScreenDistanceBetweenTicks )
 {
     const bool bIsHorizontalAxis = pTickFactory->isHorizontalAxis();
@@ -881,7 +881,7 @@ bool VCartesianAxis::createTextShapes(
 
 bool VCartesianAxis::createTextShapesSimple(
     const Reference<drawing::XShapes>& xTarget, TickIter& rTickIter,
-    AxisLabelProperties& rAxisLabelProperties, TickFactory2D* pTickFactory )
+    AxisLabelProperties& rAxisLabelProperties, TickFactory2D const * pTickFactory )
 {
     FixedNumberFormatter aFixedNumberFormatter(
                 m_xNumberFormatsSupplier, rAxisLabelProperties.nNumberFormatKey );
@@ -1511,7 +1511,7 @@ sal_Int32 VCartesianAxis::estimateMaximumAutoMainIncrementCount()
     return nRet;
 }
 
-void VCartesianAxis::doStaggeringOfLabels( const AxisLabelProperties& rAxisLabelProperties, TickFactory2D* pTickFactory2D )
+void VCartesianAxis::doStaggeringOfLabels( const AxisLabelProperties& rAxisLabelProperties, TickFactory2D const * pTickFactory2D )
 {
     if( !pTickFactory2D )
         return;
@@ -1716,7 +1716,7 @@ void VCartesianAxis::updatePositions()
     doStaggeringOfLabels( m_aAxisLabelProperties, pTickFactory2D );
 }
 
-void VCartesianAxis::createTickMarkLineShapes( TickInfoArrayType& rTickInfos, const TickmarkProperties& rTickmarkProperties, TickFactory2D& rTickFactory2D, bool bOnlyAtLabels )
+void VCartesianAxis::createTickMarkLineShapes( TickInfoArrayType& rTickInfos, const TickmarkProperties& rTickmarkProperties, TickFactory2D const & rTickFactory2D, bool bOnlyAtLabels )
 {
     sal_Int32 nPointCount = rTickInfos.size();
     drawing::PointSequenceSequence aPoints(2*nPointCount);
diff --git a/chart2/source/view/axes/VCartesianAxis.hxx b/chart2/source/view/axes/VCartesianAxis.hxx
index 15074393d90a..df15e4896198 100644
--- a/chart2/source/view/axes/VCartesianAxis.hxx
+++ b/chart2/source/view/axes/VCartesianAxis.hxx
@@ -120,7 +120,7 @@ private: //methods
     bool createTextShapes(
         const css::uno::Reference<css::drawing::XShapes >& xTarget,
         TickIter& rTickIter, AxisLabelProperties& rAxisLabelProperties,
-        TickFactory2D* pTickFactory, sal_Int32 nScreenDistanceBetweenTicks );
+        TickFactory2D const * pTickFactory, sal_Int32 nScreenDistanceBetweenTicks );
 
     /**
      * Variant of createTextShapes where none of auto-staggering and
@@ -130,9 +130,9 @@ private: //methods
     bool createTextShapesSimple(
         const css::uno::Reference<css::drawing::XShapes >& xTarget,
         TickIter& rTickIter, AxisLabelProperties& rAxisLabelProperties,
-        TickFactory2D* pTickFactory );
+        TickFactory2D const * pTickFactory );
 
-    void createTickMarkLineShapes( TickInfoArrayType& rTickInfos, const TickmarkProperties& rTickmarkProperties, TickFactory2D& rTickFactory2D, bool bOnlyAtLabels );
+    void createTickMarkLineShapes( TickInfoArrayType& rTickInfos, const TickmarkProperties& rTickmarkProperties, TickFactory2D const & rTickFactory2D, bool bOnlyAtLabels );
 
     TickFactory2D* createTickFactory2D();
     void hideIdenticalScreenValues( TickInfoArraysType& rTickInfos ) const;
@@ -144,7 +144,7 @@ private: //methods
      * positions based on the final stagger setting.
      */
     void    doStaggeringOfLabels( const AxisLabelProperties& rAxisLabelProperties
-                            , TickFactory2D* pTickFactory2D );
+                            , TickFactory2D const * pTickFactory2D );
 
     /**
      * @return true if we can break a single line label text into multiple
diff --git a/chart2/source/view/axes/VPolarGrid.cxx b/chart2/source/view/axes/VPolarGrid.cxx
index 54e8f7b357a4..279f38c956f2 100644
--- a/chart2/source/view/axes/VPolarGrid.cxx
+++ b/chart2/source/view/axes/VPolarGrid.cxx
@@ -67,7 +67,7 @@ void VPolarGrid::createLinePointSequence_ForAngleAxis(
         , TickInfoArraysType& rAllTickInfos
         , const ExplicitIncrementData& rIncrement
         , const ExplicitScaleData& rScale
-        , PolarPlottingPositionHelper* pPosHelper
+        , PolarPlottingPositionHelper const * pPosHelper
         , double fLogicRadius, double fLogicZ )
 {
     Reference< XScaling > xInverseScaling( nullptr );
diff --git a/chart2/source/view/axes/VPolarGrid.hxx b/chart2/source/view/axes/VPolarGrid.hxx
index f7c177071567..4391d7eca335 100644
--- a/chart2/source/view/axes/VPolarGrid.hxx
+++ b/chart2/source/view/axes/VPolarGrid.hxx
@@ -49,7 +49,7 @@ public:
                     , TickInfoArraysType& rAllTickInfos
                     , const ExplicitIncrementData& rIncrement
                     , const ExplicitScaleData& rScale
-                    , PolarPlottingPositionHelper* pPosHelper
+                    , PolarPlottingPositionHelper const * pPosHelper
                     , double fLogicRadius, double fLogicZ );
 
 private: //member
diff --git a/chart2/source/view/charttypes/AreaChart.cxx b/chart2/source/view/charttypes/AreaChart.cxx
index 2bedb8a64142..9ef01a23fbb2 100644
--- a/chart2/source/view/charttypes/AreaChart.cxx
+++ b/chart2/source/view/charttypes/AreaChart.cxx
@@ -240,7 +240,7 @@ void lcl_removeDuplicatePoints( drawing::PolyPolygonShape3D& rPolyPoly, Plotting
     rPolyPoly=aTmp;
 }
 
-bool AreaChart::create_stepped_line( drawing::PolyPolygonShape3D aStartPoly, chart2::CurveStyle eCurveStyle, PlottingPositionHelper* pPosHelper, drawing::PolyPolygonShape3D &aPoly )
+bool AreaChart::create_stepped_line( drawing::PolyPolygonShape3D aStartPoly, chart2::CurveStyle eCurveStyle, PlottingPositionHelper const * pPosHelper, drawing::PolyPolygonShape3D &aPoly )
 {
     sal_uInt32 nOuterCount = aStartPoly.SequenceX.getLength();
     if ( !nOuterCount )
@@ -366,7 +366,7 @@ bool AreaChart::create_stepped_line( drawing::PolyPolygonShape3D aStartPoly, cha
 }
 
 bool AreaChart::impl_createLine( VDataSeries* pSeries
-                , drawing::PolyPolygonShape3D* pSeriesPoly
+                , drawing::PolyPolygonShape3D const * pSeriesPoly
                 , PlottingPositionHelper* pPosHelper )
 {
     //return true if a line was created successfully
@@ -452,9 +452,9 @@ bool AreaChart::impl_createLine( VDataSeries* pSeries
 }
 
 bool AreaChart::impl_createArea( VDataSeries* pSeries
-                , drawing::PolyPolygonShape3D* pSeriesPoly
-                , drawing::PolyPolygonShape3D* pPreviousSeriesPoly
-                , PlottingPositionHelper* pPosHelper )
+                , drawing::PolyPolygonShape3D const * pSeriesPoly
+                , drawing::PolyPolygonShape3D const * pPreviousSeriesPoly
+                , PlottingPositionHelper const * pPosHelper )
 {
     //return true if an area was created successfully
 
diff --git a/chart2/source/view/charttypes/AreaChart.hxx b/chart2/source/view/charttypes/AreaChart.hxx
index af8c4251c5b9..acc133667668 100644
--- a/chart2/source/view/charttypes/AreaChart.hxx
+++ b/chart2/source/view/charttypes/AreaChart.hxx
@@ -54,15 +54,15 @@ public:
 private: //methods
     void impl_createSeriesShapes();
     bool impl_createArea( VDataSeries* pSeries
-                , css::drawing::PolyPolygonShape3D* pSeriesPoly
-                , css::drawing::PolyPolygonShape3D* pPreviousSeriesPoly
-                , PlottingPositionHelper* pPosHelper );
+                , css::drawing::PolyPolygonShape3D const * pSeriesPoly
+                , css::drawing::PolyPolygonShape3D const * pPreviousSeriesPoly
+                , PlottingPositionHelper const * pPosHelper );
     bool impl_createLine( VDataSeries* pSeries
-                , css::drawing::PolyPolygonShape3D* pSeriesPoly
+                , css::drawing::PolyPolygonShape3D const * pSeriesPoly
                 , PlottingPositionHelper* pPosHelper );
     static bool create_stepped_line( css::drawing::PolyPolygonShape3D aStartPoly
                 , css::chart2::CurveStyle eCurveStyle
-                , PlottingPositionHelper* pPosHelper
+                , PlottingPositionHelper const * pPosHelper
                 , css::drawing::PolyPolygonShape3D &aPoly );
 
 private: //member
diff --git a/chart2/source/view/charttypes/BarChart.cxx b/chart2/source/view/charttypes/BarChart.cxx
index 08b9d5a6c6bb..702b90f7569c 100644
--- a/chart2/source/view/charttypes/BarChart.cxx
+++ b/chart2/source/view/charttypes/BarChart.cxx
@@ -133,7 +133,7 @@ awt::Point BarChart::getLabelScreenPositionAndAlignment(
                      LabelAlignment& rAlignment, sal_Int32 nLabelPlacement
                      , double fScaledX, double fScaledLowerYValue, double fScaledUpperYValue, double fScaledZ
                      , double fScaledLowerBarDepth, double fScaledUpperBarDepth, double fBaseValue
-                     , BarPositionHelper* pPosHelper
+                     , BarPositionHelper const * pPosHelper
                      ) const
 {
     double fX = fScaledX;
diff --git a/chart2/source/view/charttypes/BarChart.hxx b/chart2/source/view/charttypes/BarChart.hxx
index d276fa531eab..da6071802a90 100644
--- a/chart2/source/view/charttypes/BarChart.hxx
+++ b/chart2/source/view/charttypes/BarChart.hxx
@@ -56,7 +56,7 @@ private: //methods
                         LabelAlignment& rAlignment, sal_Int32 nLabelPlacement
                         , double fScaledX, double fScaledLowerYValue, double fScaledUpperYValue, double fScaledZ
                         , double fScaledLowerBarDepth, double fScaledUpperBarDepth, double fBaseValue
-                        , BarPositionHelper* pPosHelper ) const;
+                        , BarPositionHelper const * pPosHelper ) const;
 
     virtual PlottingPositionHelper& getPlottingPositionHelper( sal_Int32 nAxisIndex ) const override;//nAxisIndex indicates whether the position belongs to the main axis ( nAxisIndex==0 ) or secondary axis ( nAxisIndex==1 )
 
diff --git a/chart2/source/view/charttypes/GL3DBarChart.cxx b/chart2/source/view/charttypes/GL3DBarChart.cxx
index 1eecec9f67f9..c0085bdf49df 100644
--- a/chart2/source/view/charttypes/GL3DBarChart.cxx
+++ b/chart2/source/view/charttypes/GL3DBarChart.cxx
@@ -1168,7 +1168,7 @@ void GL3DBarChart::updateRenderFPS()
                        glm::vec4(1.0f, 0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 0.0f, 0.0f));
 }
 
-int GL3DBarChart::calcTimeInterval(TimeValue &startTime, TimeValue &endTime)
+int GL3DBarChart::calcTimeInterval(TimeValue const &startTime, TimeValue const &endTime)
 {
     TimeValue aTime;
     aTime.Seconds = endTime.Seconds - startTime.Seconds - 1;
@@ -1215,7 +1215,7 @@ void GL3DBarChart::updateDataUpdateFPS()
     addScreenTextShape(maDataUpdateFPS, glm::vec2(-0.77f, 0.92f), 0.07f, true, glm::vec4(1.0f, 0.0f, 0.0f, 0.0f));
 }
 
-void GL3DBarChart::recordBarHistory(sal_uInt32 &nBarID, float &nVal)
+void GL3DBarChart::recordBarHistory(sal_uInt32 nBarID, float nVal)
 {
     std::deque<float>& aList = maBarHistory[nBarID];
     if(aList.size() == HISTORY_NUM)
diff --git a/chart2/source/view/charttypes/NetChart.cxx b/chart2/source/view/charttypes/NetChart.cxx
index ba896e3eb4e8..4ed5410c0729 100644
--- a/chart2/source/view/charttypes/NetChart.cxx
+++ b/chart2/source/view/charttypes/NetChart.cxx
@@ -118,7 +118,7 @@ drawing::Direction3D NetChart::getPreferredDiagramAspectRatio() const
 
 bool NetChart::impl_createLine( VDataSeries* pSeries
                 , drawing::PolyPolygonShape3D* pSeriesPoly
-                , PlottingPositionHelper* pPosHelper )
+                , PlottingPositionHelper const * pPosHelper )
 {
     //return true if a line was created successfully
     uno::Reference< drawing::XShapes > xSeriesGroupShape_Shapes = getSeriesGroupShapeBackChild(pSeries, m_xSeriesTarget);
@@ -171,8 +171,8 @@ bool NetChart::impl_createLine( VDataSeries* pSeries
 
 bool NetChart::impl_createArea( VDataSeries* pSeries
                 , drawing::PolyPolygonShape3D* pSeriesPoly
-                , drawing::PolyPolygonShape3D* pPreviousSeriesPoly
-                , PlottingPositionHelper* pPosHelper )
+                , drawing::PolyPolygonShape3D const * pPreviousSeriesPoly
+                , PlottingPositionHelper const * pPosHelper )
 {
     //return true if an area was created successfully
 
diff --git a/chart2/source/view/charttypes/NetChart.hxx b/chart2/source/view/charttypes/NetChart.hxx
index 626e9253097c..eecd2550b25a 100644
--- a/chart2/source/view/charttypes/NetChart.hxx
+++ b/chart2/source/view/charttypes/NetChart.hxx
@@ -55,11 +55,11 @@ private: //methods
     void impl_createSeriesShapes();
     bool impl_createArea( VDataSeries* pSeries
                 , css::drawing::PolyPolygonShape3D* pSeriesPoly
-                , css::drawing::PolyPolygonShape3D* pPreviousSeriesPoly
-                , PlottingPositionHelper* pPosHelper );
+                , css::drawing::PolyPolygonShape3D const * pPreviousSeriesPoly
+                , PlottingPositionHelper const * pPosHelper );
     bool impl_createLine( VDataSeries* pSeries
                 , css::drawing::PolyPolygonShape3D* pSeriesPoly
-                , PlottingPositionHelper* pPosHelper );
+                , PlottingPositionHelper const * pPosHelper );
 
 private: //member
     std::unique_ptr<PlottingPositionHelper> m_pMainPosHelper;
diff --git a/chart2/source/view/charttypes/PieChart.cxx b/chart2/source/view/charttypes/PieChart.cxx
index 72df0caf6566..84ad1938459d 100644
--- a/chart2/source/view/charttypes/PieChart.cxx
+++ b/chart2/source/view/charttypes/PieChart.cxx
@@ -217,7 +217,7 @@ bool PieChart::shouldSnapRectToUsedArea()
 uno::Reference< drawing::XShape > PieChart::createDataPoint(
     const uno::Reference<drawing::XShapes>& xTarget,
     const uno::Reference<beans::XPropertySet>& xObjectProperties,
-    tPropertyNameValueMap* pOverwritePropertiesMap,
+    tPropertyNameValueMap const * pOverwritePropertiesMap,
     const ShapeParam& rParam )
 {
     //transform position:
@@ -995,7 +995,7 @@ bool PieChart::detectLabelOverlapsAndMove( const awt::Size& rPageSize )
 /** Try to remove all overlaps that occur in the list of labels going from
  *  `pFirstBorder` to `pSecondBorder`
  */
-bool PieChart::tryMoveLabels( PieLabelInfo* pFirstBorder, PieLabelInfo* pSecondBorder
+bool PieChart::tryMoveLabels( PieLabelInfo const * pFirstBorder, PieLabelInfo const * pSecondBorder
                              , PieLabelInfo* pCenter
                              , bool bSingleCenter, bool& rbAlternativeMoveDirection, const awt::Size& rPageSize )
 {
@@ -1263,7 +1263,7 @@ void PieChart::rearrangeLabelToAvoidOverlapIfRequested( const awt::Size& rPageSi
  *   4. the top edge when 225 < alpha < 315.
  *
  **/
-bool PieChart::performLabelBestFitInnerPlacement(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo)
+bool PieChart::performLabelBestFitInnerPlacement(ShapeParam& rShapeParam, PieLabelInfo const & rPieLabelInfo)
 {
     SAL_INFO( "chart2.pie.label.bestfit.inside",
               "** PieChart::performLabelBestFitInnerPlacement invoked **" );
diff --git a/chart2/source/view/charttypes/PieChart.hxx b/chart2/source/view/charttypes/PieChart.hxx
index dd6c5f2de600..1b39ba229ed0 100644
--- a/chart2/source/view/charttypes/PieChart.hxx
+++ b/chart2/source/view/charttypes/PieChart.hxx
@@ -68,7 +68,7 @@ private: //methods
         createDataPoint(
             const css::uno::Reference<css::drawing::XShapes>& xTarget,
             const css::uno::Reference<css::beans::XPropertySet>& xObjectProperties,
-            tPropertyNameValueMap* pOverWritePropertiesMap,
+            tPropertyNameValueMap const * pOverWritePropertiesMap,
             const ShapeParam& rParam );
 
     /** This method creates a text shape for a label of a data point.
@@ -102,11 +102,11 @@ private: //methods
     bool                detectLabelOverlapsAndMove(const css::awt::Size& rPageSize);//returns true when there might be more to do
     void                resetLabelPositionsToPreviousState();
 struct PieLabelInfo;
-    bool                tryMoveLabels( PieLabelInfo* pFirstBorder, PieLabelInfo* pSecondBorder
+    bool                tryMoveLabels( PieLabelInfo const * pFirstBorder, PieLabelInfo const * pSecondBorder
                                 , PieLabelInfo* pCenter, bool bSingleCenter, bool& rbAlternativeMoveDirection
                                 , const css::awt::Size& rPageSize );
 
-    bool                performLabelBestFitInnerPlacement(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
+    bool                performLabelBestFitInnerPlacement(ShapeParam& rShapeParam, PieLabelInfo const & rPieLabelInfo);
     static bool         performLabelBestFitOuterPlacement(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
     void                performLabelBestFit(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
 
diff --git a/chart2/source/view/charttypes/VSeriesPlotter.cxx b/chart2/source/view/charttypes/VSeriesPlotter.cxx
index b4173b69fe41..589812594ff6 100644
--- a/chart2/source/view/charttypes/VSeriesPlotter.cxx
+++ b/chart2/source/view/charttypes/VSeriesPlotter.cxx
@@ -357,7 +357,7 @@ uno::Reference< drawing::XShapes > VSeriesPlotter::getErrorBarsGroupShape( VData
 
 }
 
-OUString VSeriesPlotter::getLabelTextForValue( VDataSeries& rDataSeries
+OUString VSeriesPlotter::getLabelTextForValue( VDataSeries const & rDataSeries
                 , sal_Int32 nPointIndex
                 , double fValue
                 , bool bAsPercentage )
@@ -802,7 +802,7 @@ void lcl_AddErrorBottomLine( const drawing::Position3D& rPosition, ::basegfx::B2
 ::basegfx::B2DVector lcl_getErrorBarMainDirection(
               const drawing::Position3D& rStart
             , const drawing::Position3D& rBottomEnd
-            , PlottingPositionHelper* pPosHelper
+            , PlottingPositionHelper const * pPosHelper
             , const drawing::Position3D& rUnscaledLogicPosition
             , bool bYError )
 {
@@ -843,7 +843,7 @@ void lcl_AddErrorBottomLine( const drawing::Position3D& rPosition, ::basegfx::B2
     return aMainDirection;
 }
 
-drawing::Position3D lcl_transformMixedToScene( PlottingPositionHelper* pPosHelper
+drawing::Position3D lcl_transformMixedToScene( PlottingPositionHelper const * pPosHelper
     , double fX /*scaled*/, double fY /*unscaled*/, double fZ /*unscaled*/, bool bClip )
 {
     if(!pPosHelper)
@@ -1024,7 +1024,7 @@ void VSeriesPlotter::createErrorBar_X( const drawing::Position3D& rUnscaledLogic
 void VSeriesPlotter::createErrorBar_Y( const drawing::Position3D& rUnscaledLogicPosition
                             , VDataSeries& rVDataSeries, sal_Int32 nPointIndex
                             , const uno::Reference< drawing::XShapes >& xTarget
-                            , double* pfScaledLogicX )
+                            , double const * pfScaledLogicX )
 {
     if(m_nDimension!=2)
         return;
@@ -1043,7 +1043,7 @@ void VSeriesPlotter::createErrorBar_Y( const drawing::Position3D& rUnscaledLogic
     }
 }
 
-void VSeriesPlotter::createRegressionCurvesShapes( VDataSeries& rVDataSeries,
+void VSeriesPlotter::createRegressionCurvesShapes( VDataSeries const & rVDataSeries,
                             const uno::Reference< drawing::XShapes >& xTarget,
                             const uno::Reference< drawing::XShapes >& xEquationTarget,
                             bool bMaySkipPoints )
@@ -1192,7 +1192,7 @@ void VSeriesPlotter::createRegressionCurvesShapes( VDataSeries& rVDataSeries,
     }
 }
 
-sal_Int32 lcl_getOUStringMaxLineLength ( OUStringBuffer& aString )
+sal_Int32 lcl_getOUStringMaxLineLength ( OUStringBuffer const & aString )
 {
     const sal_Int32 nStringLength = aString.getLength();
     sal_Int32 nMaxLineLength = 0;
@@ -1357,7 +1357,7 @@ void VSeriesPlotter::setMappedProperties(
           const uno::Reference< drawing::XShape >& xTargetShape
         , const uno::Reference< beans::XPropertySet >& xSource
         , const tPropertyNameMap& rMap
-        , tPropertyNameValueMap* pOverwriteMap )
+        , tPropertyNameValueMap const * pOverwriteMap )
 {
     uno::Reference< beans::XPropertySet > xTargetProp( xTargetShape, uno::UNO_QUERY );
     PropertyMapper::setMappedProperties(xTargetProp,xSource,rMap,pOverwriteMap);
diff --git a/chart2/source/view/inc/GL3DBarChart.hxx b/chart2/source/view/inc/GL3DBarChart.hxx
index 8e83508b560f..753504ccf17a 100644
--- a/chart2/source/view/inc/GL3DBarChart.hxx
+++ b/chart2/source/view/inc/GL3DBarChart.hxx
@@ -102,12 +102,12 @@ private:
     void updateRenderFPS();
     void updateDataUpdateFPS();
     DECL_LINK(UpdateTimerHdl, Timer*, void);
-    static int calcTimeInterval(TimeValue &startTime, TimeValue &endTime);
+    static int calcTimeInterval(TimeValue const &startTime, TimeValue const &endTime);
     float addScreenTextShape(OUString &nStr, const glm::vec2& rLeftOrRightTop, float nTextHeight, bool bLeftTopFlag,
                                   const glm::vec4& rColor,
                                   const glm::vec3& rPos = glm::vec3(0.0f, 0.0f, 0.0f),
                                   sal_uInt32 nEvent = 0);
-    void recordBarHistory(sal_uInt32 &nBarID, float &nVal);
+    void recordBarHistory(sal_uInt32 nBarID, float nVal);
     void updateClickEvent();
     void calcDistance(std::vector<sal_uInt32> &vectorNearest);
     static float calcScrollDistance(const glm::mat4 &mvp, const glm::vec3& rPos);
diff --git a/chart2/source/view/inc/GL3DRenderer.hxx b/chart2/source/view/inc/GL3DRenderer.hxx
index 240fb955bb17..3a3f19a78bbf 100644
--- a/chart2/source/view/inc/GL3DRenderer.hxx
+++ b/chart2/source/view/inc/GL3DRenderer.hxx
@@ -248,11 +248,11 @@ private:
     void AddNormalData(GLuint normalBuf);
     void AddIndexData(GLuint indexBuf);
     void RenderNonRoundedBar(const Extrude3DInfo& extrude3D);
-    static bool GetSimilarVertexIndex(PackedVertex & packed,
+    static bool GetSimilarVertexIndex(PackedVertex const & packed,
         std::map<PackedVertex,unsigned short> & VertexToOutIndex,
         unsigned short & result
         );
-    static void SetVertex(PackedVertex &packed,
+    static void SetVertex(PackedVertex const &packed,
         std::map<PackedVertex,unsigned short> &VertexToOutIndex,
         std::vector<glm::vec3> &vertex,
         std::vector<glm::vec3> &normal,
diff --git a/chart2/source/view/inc/PropertyMapper.hxx b/chart2/source/view/inc/PropertyMapper.hxx
index 5af3b7fdf27b..6d2b1508fd7b 100644
--- a/chart2/source/view/inc/PropertyMapper.hxx
+++ b/chart2/source/view/inc/PropertyMapper.hxx
@@ -49,7 +49,7 @@ public:
           const css::uno::Reference< css::beans::XPropertySet >& xTarget
         , const css::uno::Reference< css::beans::XPropertySet >& xSource
         , const tPropertyNameMap& rMap
-        , tPropertyNameValueMap* pOverwriteMap=nullptr );
+        , tPropertyNameValueMap const * pOverwriteMap=nullptr );
 
     /**
      * Fetch property values from the source object and map it to the
diff --git a/chart2/source/view/inc/VSeriesPlotter.hxx b/chart2/source/view/inc/VSeriesPlotter.hxx
index c66f992cf12a..65aa67de86b0 100644
--- a/chart2/source/view/inc/VSeriesPlotter.hxx
+++ b/chart2/source/view/inc/VSeriesPlotter.hxx
@@ -327,7 +327,7 @@ protected:
 
     /// This method returns a text string representation of the passed numeric
     /// value by exploiting a NumberFormatterWrapper object.
-    OUString getLabelTextForValue( VDataSeries& rDataSeries
+    OUString getLabelTextForValue( VDataSeries const & rDataSeries
                 , sal_Int32 nPointIndex
                 , double fValue
                 , bool bAsPercentage );
@@ -366,9 +366,9 @@ protected:
     void createErrorBar_Y( const css::drawing::Position3D& rUnscaledLogicPosition
         , VDataSeries& rVDataSeries, sal_Int32 nPointIndex
         , const css::uno::Reference< css::drawing::XShapes >& xTarget
-        , double* pfScaledLogicX );
+        , double const * pfScaledLogicX );
 
-    void createRegressionCurvesShapes( VDataSeries& rVDataSeries
+    void createRegressionCurvesShapes( VDataSeries const & rVDataSeries
         , const css::uno::Reference< css::drawing::XShapes >& xTarget
         , const css::uno::Reference< css::drawing::XShapes >& xEquationTarget
         , bool bMaySkipPointsInRegressionCalculation );
@@ -383,7 +383,7 @@ protected:
           const css::uno::Reference< css::drawing::XShape >& xTarget
         , const css::uno::Reference< css::beans::XPropertySet >& xSource
         , const tPropertyNameMap& rMap
-        , tPropertyNameValueMap* pOverwriteMap=nullptr );
+        , tPropertyNameValueMap const * pOverwriteMap=nullptr );
 
     virtual PlottingPositionHelper& getPlottingPositionHelper( sal_Int32 nAxisIndex ) const;//nAxisIndex indicates whether the position belongs to the main axis ( nAxisIndex==0 ) or secondary axis ( nAxisIndex==1 )
 
diff --git a/chart2/source/view/main/ChartView.cxx b/chart2/source/view/main/ChartView.cxx
index 20a4c1cb493c..965157e13fa9 100644
--- a/chart2/source/view/main/ChartView.cxx
+++ b/chart2/source/view/main/ChartView.cxx
@@ -2296,7 +2296,7 @@ bool getAvailablePosAndSizeForDiagram(
 enum TitleAlignment { ALIGN_LEFT, ALIGN_TOP, ALIGN_RIGHT, ALIGN_BOTTOM, ALIGN_Z };
 
 void changePositionOfAxisTitle( VTitle* pVTitle, TitleAlignment eAlignment
-                               , awt::Rectangle& rDiagramPlusAxesRect, const awt::Size & rPageSize )
+                               , awt::Rectangle const & rDiagramPlusAxesRect, const awt::Size & rPageSize )
 {
     if(!pVTitle)
         return;
diff --git a/chart2/source/view/main/DrawModelWrapper.cxx b/chart2/source/view/main/DrawModelWrapper.cxx
index d0dd9234aa16..580a762ecb2a 100644
--- a/chart2/source/view/main/DrawModelWrapper.cxx
+++ b/chart2/source/view/main/DrawModelWrapper.cxx
@@ -297,7 +297,7 @@ SdrObject* DrawModelWrapper::getNamedSdrObject( const OUString& rName )
     return getNamedSdrObject( rName, GetPage(0) );
 }
 
-SdrObject* DrawModelWrapper::getNamedSdrObject( const OUString& rObjectCID, SdrObjList* pSearchList )
+SdrObject* DrawModelWrapper::getNamedSdrObject( const OUString& rObjectCID, SdrObjList const * pSearchList )
 {
     if(!pSearchList || rObjectCID.isEmpty())
         return nullptr;
diff --git a/chart2/source/view/main/GL3DRenderer.cxx b/chart2/source/view/main/GL3DRenderer.cxx
index 8c92ccd9a9b2..3ff7939aba2f 100644
--- a/chart2/source/view/main/GL3DRenderer.cxx
+++ b/chart2/source/view/main/GL3DRenderer.cxx
@@ -468,7 +468,7 @@ void OpenGL3DRenderer::AddIndexData(GLuint indexBuf)
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 }
 
-bool OpenGL3DRenderer::GetSimilarVertexIndex(PackedVertex & packed,
+bool OpenGL3DRenderer::GetSimilarVertexIndex(PackedVertex const & packed,
     std::map<PackedVertex,unsigned short> & VertexToOutIndex,
     unsigned short & result
     )
@@ -485,7 +485,7 @@ bool OpenGL3DRenderer::GetSimilarVertexIndex(PackedVertex & packed,
     }
 }
 
-void OpenGL3DRenderer::SetVertex(PackedVertex &packed,
+void OpenGL3DRenderer::SetVertex(PackedVertex const &packed,
     std::map<PackedVertex,unsigned short> &VertexToOutIndex,
     std::vector<glm::vec3> &vertex,
     std::vector<glm::vec3> &normal,
diff --git a/chart2/source/view/main/PropertyMapper.cxx b/chart2/source/view/main/PropertyMapper.cxx
index e35bd913129e..15bc0dbea5a6 100644
--- a/chart2/source/view/main/PropertyMapper.cxx
+++ b/chart2/source/view/main/PropertyMapper.cxx
@@ -51,7 +51,7 @@ void PropertyMapper::setMappedProperties(
           const uno::Reference< beans::XPropertySet >& xTarget
         , const uno::Reference< beans::XPropertySet >& xSource
         , const tPropertyNameMap& rMap
-        , tPropertyNameValueMap* pOverwriteMap )
+        , tPropertyNameValueMap const * pOverwriteMap )
 {
     if( !xTarget.is() || !xSource.is() )
         return;
diff --git a/compilerplugins/clang/constparams.cxx b/compilerplugins/clang/constparams.cxx
index 9f43e90fdc02..76b1b91784a8 100644
--- a/compilerplugins/clang/constparams.cxx
+++ b/compilerplugins/clang/constparams.cxx
@@ -122,6 +122,9 @@ bool ConstParams::VisitFunctionDecl(FunctionDecl * functionDecl)
             || name == "ProcessEventsToSignal"
                 // external API
             || name == "Java_com_sun_star_sdbcx_comp_hsqldb_StorageNativeOutputStream_flush"
+            || name == "egiGraphicExport"
+            || name == "etiGraphicExport"
+            || name == "epsGraphicExport"
             )
                 return true;
     }