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diff --git a/oox/source/ppt/slidefragmenthandler.cxx b/oox/source/ppt/slidefragmenthandler.cxx
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+++ b/oox/source/ppt/slidefragmenthandler.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/container/XNamed.hpp>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+#include <comphelper/diagnose_ex.hxx>
+
+#include <oox/helper/attributelist.hxx>
+#include <oox/helper/propertyset.hxx>
+#include <oox/core/xmlfilterbase.hxx>
+#include "headerfootercontext.hxx"
+#include <oox/ppt/backgroundproperties.hxx>
+#include <oox/ppt/slidefragmenthandler.hxx>
+#include <oox/ppt/slidetimingcontext.hxx>
+#include <oox/ppt/slidetransitioncontext.hxx>
+#include <oox/ppt/slidemastertextstylescontext.hxx>
+#include <oox/ppt/pptshapegroupcontext.hxx>
+#include <oox/ppt/pptshape.hxx>
+#include <oox/vml/vmldrawing.hxx>
+#include <oox/vml/vmldrawingfragment.hxx>
+#include <drawingml/clrschemecontext.hxx>
+#include <drawingml/fillproperties.hxx>
+#include <oox/ppt/pptimport.hxx>
+#include <oox/token/namespaces.hxx>
+#include <oox/token/properties.hxx>
+#include <oox/token/tokens.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::oox::core;
+using namespace ::oox::drawingml;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::drawing;
+using namespace ::com::sun::star::xml::sax;
+using namespace ::com::sun::star::container;
+
+namespace oox::ppt {
+
+SlideFragmentHandler::SlideFragmentHandler( XmlFilterBase& rFilter, const OUString& rFragmentPath, const SlidePersistPtr& pPersistPtr, const ShapeLocation eShapeLocation )
+: FragmentHandler2( rFilter, rFragmentPath )
+, mpSlidePersistPtr( pPersistPtr )
+, meShapeLocation( eShapeLocation )
+{
+    OUString aVMLDrawingFragmentPath = getFragmentPathFromFirstTypeFromOfficeDoc( u"vmlDrawing" );
+    if( !aVMLDrawingFragmentPath.isEmpty() )
+        getFilter().importFragment( new oox::vml::DrawingFragment(
+            getFilter(), aVMLDrawingFragmentPath, *pPersistPtr->getDrawing() ) );
+}
+
+SlideFragmentHandler::~SlideFragmentHandler()
+{
+    // convert and insert all VML shapes (mostly form controls)
+    mpSlidePersistPtr->getDrawing()->convertAndInsert();
+}
+
+::oox::core::ContextHandlerRef SlideFragmentHandler::onCreateContext( sal_Int32 aElementToken, const AttributeList& rAttribs )
+{
+    switch( aElementToken )
+    {
+    case PPT_TOKEN( sldMaster ):        // CT_SlideMaster
+    case PPT_TOKEN( handoutMaster ):    // CT_HandoutMaster
+    case PPT_TOKEN( sld ):              // CT_CommonSlideData
+    {
+        Reference< XDrawPage > xSlide( mpSlidePersistPtr->getPage() );
+        Reference< css::beans::XPropertySet > xSet(xSlide, UNO_QUERY);
+        PropertyMap aPropMap;
+        PropertySet aSlideProp( xSlide );
+
+        std::optional<bool> aShowMasterShapes = rAttribs.getBool(XML_showMasterSp);
+        if (aShowMasterShapes.has_value() && !aShowMasterShapes.value())
+            xSet->setPropertyValue("IsBackgroundObjectsVisible", Any(false));
+
+        aPropMap.setProperty( PROP_Visible, rAttribs.getBool( XML_show, true ));
+        aSlideProp.setProperties( aPropMap );
+
+        return this;
+    }
+    case PPT_TOKEN( notes ):            // CT_NotesSlide
+    {
+        // Import notesMaster
+        PowerPointImport& rFilter = dynamic_cast< PowerPointImport& >( getFilter() );
+        OUString aNotesFragmentPath = getFragmentPathFromFirstTypeFromOfficeDoc( u"notesMaster" );
+
+        std::vector< SlidePersistPtr >& rMasterPages( rFilter.getMasterPages() );
+        bool bNotesFragmentPathFound = false;
+        for (auto const& masterPage : rMasterPages)
+        {
+            if( masterPage->getPath() == aNotesFragmentPath )
+            {
+                if( !mpSlidePersistPtr->getMasterPersist() )
+                    mpSlidePersistPtr->setMasterPersist(masterPage);
+                bNotesFragmentPathFound=true;
+                break;
+            }
+        }
+        if( !bNotesFragmentPathFound && !mpSlidePersistPtr->getMasterPersist() )
+        {
+            SlidePersistPtr pMasterPersistPtr = std::make_shared<SlidePersist>( rFilter, true, true, mpSlidePersistPtr->getPage(),
+                                std::make_shared<PPTShape>( Master, "com.sun.star.drawing.GroupShape" ), mpSlidePersistPtr->getNotesTextStyle() );
+            pMasterPersistPtr->setPath( aNotesFragmentPath );
+            rFilter.getMasterPages().push_back( pMasterPersistPtr );
+            FragmentHandlerRef xMasterFragmentHandler( new SlideFragmentHandler( rFilter, aNotesFragmentPath, pMasterPersistPtr, Master ) );
+            rFilter.importFragment( xMasterFragmentHandler );
+            mpSlidePersistPtr->setMasterPersist( pMasterPersistPtr );
+        }
+        return this;
+    }
+    case PPT_TOKEN( notesMaster ):      // CT_NotesMaster
+        return this;
+    case PPT_TOKEN( cSld ):             // CT_CommonSlideData
+        maSlideName = rAttribs.getStringDefaulted(XML_name);
+        return this;
+
+    case PPT_TOKEN( spTree ):           // CT_GroupShape
+        {
+            return new PPTShapeGroupContext(
+                *this, mpSlidePersistPtr, meShapeLocation, mpSlidePersistPtr->getShapes(),
+                std::make_shared<PPTShape>( meShapeLocation, "com.sun.star.drawing.GroupShape" ) );
+        }
+        break;
+
+    case PPT_TOKEN( controls ):
+        return this;
+    case PPT_TOKEN( control ):
+        {
+            ::oox::vml::ControlInfo aInfo;
+            aInfo.setShapeId( rAttribs.getInteger( XML_spid, 0 ) );
+            aInfo.maFragmentPath = getFragmentPathFromRelId( rAttribs.getStringDefaulted( R_TOKEN( id )) );
+            aInfo.maName = rAttribs.getXString( XML_name, OUString() );
+            mpSlidePersistPtr->getDrawing()->registerControl( aInfo );
+        }
+        return this;
+
+    case PPT_TOKEN( timing ): // CT_SlideTiming
+        return new SlideTimingContext( *this, mpSlidePersistPtr->getTimeNodeList() );
+    case PPT_TOKEN( transition ): // CT_SlideTransition
+        return new SlideTransitionContext( *this, rAttribs, maSlideProperties );
+    case PPT_TOKEN( hf ):
+        return new HeaderFooterContext( *this, rAttribs, mpSlidePersistPtr->getHeaderFooter() );
+
+    // BackgroundGroup
+    case PPT_TOKEN( bg ):
+        return this;
+    case PPT_TOKEN( bgPr ):             // CT_BackgroundProperties
+        {
+            FillPropertiesPtr pFillPropertiesPtr =std::make_shared<FillProperties>();
+            mpSlidePersistPtr->setBackgroundProperties( pFillPropertiesPtr );
+            return new BackgroundPropertiesContext( *this, *pFillPropertiesPtr );
+        }
+        break;
+
+    case PPT_TOKEN( bgRef ):            // a:CT_StyleMatrixReference
+        {
+            const FillProperties *pFillProperties = nullptr;
+            if( mpSlidePersistPtr->getTheme() )
+                pFillProperties = mpSlidePersistPtr->getTheme()->getFillStyle( rAttribs.getInteger( XML_idx, -1 ) );
+            FillPropertiesPtr pFillPropertiesPtr =
+                pFillProperties
+                ? std::make_shared<FillProperties>( *pFillProperties )
+                : std::make_shared<FillProperties>();
+            mpSlidePersistPtr->setBackgroundProperties( pFillPropertiesPtr );
+            ContextHandlerRef ret = new ColorContext( *this, mpSlidePersistPtr->getBackgroundColor() );
+            return ret;
+        }
+        break;
+
+    case A_TOKEN( overrideClrMapping ):
+    case PPT_TOKEN( clrMap ):           // CT_ColorMapping
+        {
+            oox::drawingml::ClrMapPtr pClrMapPtr =
+                ( aElementToken == PPT_TOKEN( clrMap ) || !mpSlidePersistPtr || !mpSlidePersistPtr->getClrMap() )
+                ? std::make_shared<oox::drawingml::ClrMap>()
+                : std::make_shared<oox::drawingml::ClrMap>( *mpSlidePersistPtr->getClrMap() );
+            ContextHandlerRef ret = new oox::drawingml::clrMapContext( *this, rAttribs, *pClrMapPtr );
+            mpSlidePersistPtr->setClrMap( pClrMapPtr );
+            return ret;
+        }
+        break;
+    case PPT_TOKEN( clrMapOvr ):        // CT_ColorMappingOverride
+    case PPT_TOKEN( sldLayoutIdLst ):   // CT_SlideLayoutIdList
+        return this;
+    case PPT_TOKEN( txStyles ):         // CT_SlideMasterTextStyles
+        return new SlideMasterTextStylesContext( *this, mpSlidePersistPtr );
+    case PPT_TOKEN( custDataLst ):      // CT_CustomerDataList
+    case PPT_TOKEN( tagLst ):           // CT_TagList
+        return this;
+
+    //for Comments
+    case PPT_TOKEN( cmLst ):
+        break;
+    case PPT_TOKEN( cm ):
+        if (!mpSlidePersistPtr->getCommentsList().cmLst.empty() && !getCharVector().empty())
+        {
+            // set comment text for earlier comment
+            mpSlidePersistPtr->getCommentsList().cmLst.back().setText( getCharVector().back() );
+        }
+        // insert a new comment in vector commentsList
+        mpSlidePersistPtr->getCommentsList().cmLst.emplace_back();
+        mpSlidePersistPtr->getCommentsList().cmLst.back().setAuthorId(rAttribs.getStringDefaulted(XML_authorId));
+        mpSlidePersistPtr->getCommentsList().cmLst.back().setdt(rAttribs.getStringDefaulted(XML_dt));
+        mpSlidePersistPtr->getCommentsList().cmLst.back().setidx(rAttribs.getStringDefaulted(XML_idx));
+        break;
+
+    case PPT_TOKEN( pos ):
+        mpSlidePersistPtr->getCommentsList().cmLst.back().setPoint(
+            rAttribs.getStringDefaulted(XML_x),
+            rAttribs.getStringDefaulted(XML_y));
+        break;
+
+    case PPT_TOKEN( cmAuthor ):
+        CommentAuthor _author;
+        _author.clrIdx = rAttribs.getStringDefaulted(XML_clrIdx);
+        _author.id = rAttribs.getStringDefaulted(XML_id);
+        _author.initials = rAttribs.getStringDefaulted(XML_initials);
+        _author.lastIdx = rAttribs.getStringDefaulted(XML_lastIdx);
+        _author.name = rAttribs.getStringDefaulted(XML_name);
+        mpSlidePersistPtr->getCommentAuthors().addAuthor(_author);
+        break;
+    }
+
+    return this;
+}
+void SlideFragmentHandler::onCharacters( const OUString& rChars)
+{
+    maCharVector.push_back(rChars);
+}
+void SlideFragmentHandler::finalizeImport()
+{
+    try
+    {
+        Reference< XDrawPage > xSlide( mpSlidePersistPtr->getPage() );
+        PropertySet aSlideProp( xSlide );
+        aSlideProp.setProperties( maSlideProperties );
+        if ( !maSlideName.isEmpty() )
+        {
+            Reference< XNamed > xNamed( xSlide, UNO_QUERY );
+            if( xNamed.is() )
+                xNamed->setName( maSlideName );
+        }
+    }
+    catch( uno::Exception& )
+    {
+        TOOLS_WARN_EXCEPTION( "oox", "oox::ppt::SlideFragmentHandler::EndElement()" );
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */