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diff --git a/svx/source/svdraw/svdlayer.cxx b/svx/source/svdraw/svdlayer.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/uno/Sequence.hxx>
+
+#include <svx/svdlayer.hxx>
+#include <svx/svdmodel.hxx>
+
+bool SdrLayerIDSet::IsEmpty() const
+{
+ for(sal_uInt8 i : aData)
+ {
+ if(i != 0)
+ return false;
+ }
+
+ return true;
+}
+
+void SdrLayerIDSet::operator&=(const SdrLayerIDSet& r2ndSet)
+{
+ for(sal_uInt16 i(0); i < 32; i++)
+ {
+ aData[i] &= r2ndSet.aData[i];
+ }
+}
+
+/** initialize this set with a UNO sequence of sal_Int8 (e.g. as stored in settings.xml)
+*/
+void SdrLayerIDSet::PutValue( const css::uno::Any & rAny )
+{
+ css::uno::Sequence< sal_Int8 > aSeq;
+ if( rAny >>= aSeq )
+ {
+ sal_Int16 nCount = static_cast<sal_Int16>(aSeq.getLength());
+ if( nCount > 32 )
+ nCount = 32;
+
+ sal_Int16 nIndex;
+ for( nIndex = 0; nIndex < nCount; nIndex++ )
+ {
+ aData[nIndex] = static_cast<sal_uInt8>(aSeq[nIndex]);
+ }
+
+ for( ; nIndex < 32; nIndex++ )
+ {
+ aData[nIndex] = 0;
+ }
+ }
+}
+
+SdrLayer::SdrLayer(SdrLayerID nNewID, const OUString& rNewName) :
+ maName(rNewName), pModel(nullptr), nID(nNewID)
+{
+ // ODF default values
+ mbVisibleODF = true;
+ mbPrintableODF = true;
+ mbLockedODF = false;
+}
+
+void SdrLayer::SetName(const OUString& rNewName)
+{
+ if (rNewName == maName)
+ return;
+
+ maName = rNewName;
+
+ if (pModel)
+ {
+ SdrHint aHint(SdrHintKind::LayerChange);
+ pModel->Broadcast(aHint);
+ pModel->SetChanged();
+ }
+}
+
+bool SdrLayer::operator==(const SdrLayer& rCmpLayer) const
+{
+ return (nID == rCmpLayer.nID
+ && maName == rCmpLayer.maName);
+}
+
+SdrLayerAdmin::SdrLayerAdmin(SdrLayerAdmin* pNewParent):
+ pParent(pNewParent),
+ pModel(nullptr),
+ maControlLayerName("controls")
+{
+}
+
+SdrLayerAdmin::SdrLayerAdmin(const SdrLayerAdmin& rSrcLayerAdmin):
+ pParent(nullptr),
+ pModel(nullptr),
+ maControlLayerName("controls")
+{
+ *this = rSrcLayerAdmin;
+}
+
+SdrLayerAdmin::~SdrLayerAdmin()
+{
+}
+
+void SdrLayerAdmin::ClearLayers()
+{
+ maLayers.clear();
+}
+
+SdrLayerAdmin& SdrLayerAdmin::operator=(const SdrLayerAdmin& rSrcLayerAdmin)
+{
+ if (this != &rSrcLayerAdmin)
+ {
+ maLayers.clear();
+ pParent=rSrcLayerAdmin.pParent;
+ sal_uInt16 i;
+ sal_uInt16 nCount=rSrcLayerAdmin.GetLayerCount();
+ for (i=0; i<nCount; i++) {
+ maLayers.emplace_back(new SdrLayer(*rSrcLayerAdmin.GetLayer(i)));
+ }
+ }
+ return *this;
+}
+
+void SdrLayerAdmin::SetModel(SdrModel* pNewModelel)
+{
+ if (pNewModelel!=pModel) {
+ pModel=pNewModelel;
+ sal_uInt16 nCount=GetLayerCount();
+ sal_uInt16 i;
+ for (i=0; i<nCount; i++) {
+ GetLayer(i)->SetModel(pNewModelel);
+ }
+ }
+}
+
+void SdrLayerAdmin::Broadcast() const
+{
+ if (pModel!=nullptr) {
+ SdrHint aHint(SdrHintKind::LayerOrderChange);
+ pModel->Broadcast(aHint);
+ pModel->SetChanged();
+ }
+}
+
+void SdrLayerAdmin::InsertLayer(std::unique_ptr<SdrLayer> pLayer, sal_uInt16 nPos)
+{
+ pLayer->SetModel(pModel);
+ if(nPos==0xFFFF)
+ maLayers.push_back(std::move(pLayer));
+ else
+ maLayers.insert(maLayers.begin() + nPos, std::move(pLayer));
+ Broadcast();
+}
+
+std::unique_ptr<SdrLayer> SdrLayerAdmin::RemoveLayer(sal_uInt16 nPos)
+{
+ std::unique_ptr<SdrLayer> pRetLayer = std::move(maLayers[nPos]);
+ maLayers.erase(maLayers.begin()+nPos);
+ Broadcast();
+ return pRetLayer;
+}
+
+SdrLayer* SdrLayerAdmin::NewLayer(const OUString& rName, sal_uInt16 nPos)
+{
+ SdrLayerID nID=GetUniqueLayerID();
+ SdrLayer* pLay=new SdrLayer(nID,rName);
+ pLay->SetModel(pModel);
+ if(nPos==0xFFFF)
+ maLayers.push_back(std::unique_ptr<SdrLayer>(pLay));
+ else
+ maLayers.insert(maLayers.begin() + nPos, std::unique_ptr<SdrLayer>(pLay));
+ Broadcast();
+ return pLay;
+}
+
+sal_uInt16 SdrLayerAdmin::GetLayerPos(const SdrLayer* pLayer) const
+{
+ sal_uInt16 nRet=SDRLAYERPOS_NOTFOUND;
+ if (pLayer!=nullptr) {
+ auto it = std::find_if(maLayers.begin(), maLayers.end(),
+ [&](const std::unique_ptr<SdrLayer> & p) { return p.get() == pLayer; });
+ if (it!=maLayers.end()) {
+ nRet=it - maLayers.begin();
+ }
+ }
+ return nRet;
+}
+
+SdrLayer* SdrLayerAdmin::GetLayer(const OUString& rName)
+{
+ return const_cast<SdrLayer*>(const_cast<const SdrLayerAdmin*>(this)->GetLayer(rName));
+}
+
+const SdrLayer* SdrLayerAdmin::GetLayer(const OUString& rName) const
+{
+ sal_uInt16 i(0);
+ const SdrLayer* pLay = nullptr;
+
+ while(i < GetLayerCount() && !pLay)
+ {
+ if (rName == GetLayer(i)->GetName())
+ pLay = GetLayer(i);
+ else
+ i++;
+ }
+
+ if(!pLay && pParent)
+ {
+ pLay = pParent->GetLayer(rName);
+ }
+
+ return pLay;
+}
+
+SdrLayerID SdrLayerAdmin::GetLayerID(const OUString& rName) const
+{
+ SdrLayerID nRet=SDRLAYER_NOTFOUND;
+ const SdrLayer* pLay=GetLayer(rName);
+ if (pLay!=nullptr) nRet=pLay->GetID();
+ return nRet;
+}
+
+const SdrLayer* SdrLayerAdmin::GetLayerPerID(SdrLayerID nID) const
+{
+ for (auto const & pLayer : maLayers)
+ if (pLayer->GetID() == nID)
+ return pLayer.get();
+ return nullptr;
+}
+
+// Global LayerIDs begin at 0 and increase,
+// local LayerIDs begin at 254 and decrease;
+// 255 is reserved for SDRLAYER_NOTFOUND.
+
+SdrLayerID SdrLayerAdmin::GetUniqueLayerID() const
+{
+ SdrLayerIDSet aSet;
+ for (sal_uInt16 j=0; j<GetLayerCount(); j++)
+ {
+ aSet.Set(GetLayer(j)->GetID());
+ }
+ sal_uInt8 i;
+ if (pParent != nullptr)
+ {
+ i = 254;
+ while (i && aSet.IsSet(SdrLayerID(i)))
+ --i;
+ assert(i != 0);
+ if (i == 0)
+ i = 254;
+ }
+ else
+ {
+ i = 0;
+ while (i<=254 && aSet.IsSet(SdrLayerID(i)))
+ i++;
+ assert(i <= 254);
+ if (i>254)
+ i = 0;
+ }
+ return SdrLayerID(i);
+}
+
+void SdrLayerAdmin::SetControlLayerName(const OUString& rNewName)
+{
+ maControlLayerName = rNewName;
+}
+
+void SdrLayerAdmin::getVisibleLayersODF( SdrLayerIDSet& rOutSet) const
+{
+ rOutSet.ClearAll();
+ for( auto & pCurrentLayer : maLayers )
+ {
+ if ( pCurrentLayer->IsVisibleODF() )
+ rOutSet.Set( pCurrentLayer->GetID() );
+ }
+}
+
+void SdrLayerAdmin::getPrintableLayersODF( SdrLayerIDSet& rOutSet) const
+{
+ rOutSet.ClearAll();
+ for( auto & pCurrentLayer : maLayers )
+ {
+ if ( pCurrentLayer->IsPrintableODF() )
+ rOutSet.Set( pCurrentLayer->GetID() );
+ }
+}
+
+void SdrLayerAdmin::getLockedLayersODF( SdrLayerIDSet& rOutSet) const
+{
+ rOutSet.ClearAll();
+ for( auto& pCurrentLayer : maLayers )
+ {
+ if ( pCurrentLayer->IsLockedODF() )
+ rOutSet.Set( pCurrentLayer->GetID() );
+ }
+}
+
+ // Generates a bitfield for settings.xml from the SdrLayerIDSet.
+ // Output is a UNO sequence of BYTE (which is 'short' in API).
+void SdrLayerAdmin::QueryValue(const SdrLayerIDSet& rViewLayerSet, css::uno::Any& rAny)
+{
+ // tdf#119392 The SdrLayerIDSet in a view is ordered according LayerID, but in file
+ // the bitfield is interpreted in order of layers in <draw:layer-set>.
+ // First generate a new bitfield based on rViewLayerSet in the needed order.
+ sal_uInt8 aTmp[32]; // 256 bits in settings.xml makes byte 0 to 31
+ for (auto nIndex = 0; nIndex <32; nIndex++)
+ {
+ aTmp[nIndex] = 0;
+ }
+ sal_uInt8 nByteIndex = 0;
+ sal_uInt8 nBitpos = 0;
+ sal_uInt16 nLayerPos = 0; // Position of the layer in member aLayer and in <draw:layer-set> in file
+ sal_uInt16 nLayerIndex = 0;
+ for( const auto& pCurrentLayer : maLayers )
+ {
+ SdrLayerID nCurrentID = pCurrentLayer->GetID();
+ if ( rViewLayerSet.IsSet(nCurrentID) )
+ {
+ nLayerPos = nLayerIndex;
+ nByteIndex = nLayerPos / 8;
+ if (nByteIndex > 31)
+ continue; // skip position, if too large for bitfield
+ nBitpos = nLayerPos % 8;
+ aTmp[nByteIndex] |= (1 << nBitpos);
+ }
+ ++nLayerIndex;
+ }
+
+ // Second transform the bitfield to byte sequence, same as in previous version of QueryValue
+ sal_uInt8 nNumBytesSet = 0;
+ for( auto nIndex = 31; nIndex >= 0; nIndex--)
+ {
+ if( 0 != aTmp[nIndex] )
+ {
+ nNumBytesSet = nIndex + 1;
+ break;
+ }
+ }
+ css::uno::Sequence< sal_Int8 > aSeq( nNumBytesSet );
+ for( auto nIndex = 0; nIndex < nNumBytesSet; nIndex++ )
+ {
+ aSeq[nIndex] = static_cast<sal_Int8>(aTmp[nIndex]);
+ }
+ rAny <<= aSeq;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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