vcl: Add a internal (memory) manager for Graphic objects

This adds vcl::graphic::Manager which is a manager singleton that
tracks all the creation fo graphic objects and swaps them out on
a time and allocation basis.

Time based - every number of seconds it looks for Graphics that
weren't used for a time.

Allocation based - when creating a new Graphic and the total of
Graphic uses more than the total amount of memory for Graphics
defined in configuration, it tries to release the Graphics that
weren't used for a time.

Change-Id: I5dbf74db4a6455d32c4abcbad7be21c7f0534642
Reviewed-on: https://gerrit.libreoffice.org/52396
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

7 files changed, 371 insertions, 31 deletions

diff --git a/compilerplugins/clang/badstatics.cxx b/compilerplugins/clang/badstatics.cxx
index 697a50c8f9b0..d91f3b430a30 100644
--- a/compilerplugins/clang/badstatics.cxx
+++ b/compilerplugins/clang/badstatics.cxx
@@ -199,6 +199,7 @@ public:
                 || (loplugin::DeclCheck(pVarDecl).Var("aAllListeners")
                     .Class("ScAddInListener").GlobalNamespace()) // not owning
                 || name == "s_pLOKWindowsMap" // LOK only, guarded by assert, and LOK never tries to perform a VCL cleanup
+                || name == "gStaticManager" // vcl/source/graphic/Manager.cxx - stores non-owning pointers
                ) // these variables appear unproblematic
             {
                 return true;
diff --git a/vcl/Library_vcl.mk b/vcl/Library_vcl.mk
index b6212ba959a4..c854e94bad45 100644
--- a/vcl/Library_vcl.mk
+++ b/vcl/Library_vcl.mk
@@ -305,6 +305,7 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/graphic/GraphicObject \
     vcl/source/graphic/GraphicObject2 \
     vcl/source/graphic/grfattr \
+    vcl/source/graphic/Manager \
     vcl/source/graphic/UnoGraphic \
     vcl/source/graphic/UnoGraphicDescriptor \
     vcl/source/graphic/UnoGraphicObject \
diff --git a/vcl/inc/graphic/Manager.hxx b/vcl/inc/graphic/Manager.hxx
new file mode 100644
index 000000000000..ec3761534493
--- /dev/null
+++ b/vcl/inc/graphic/Manager.hxx
@@ -0,0 +1,71 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_GRAPHIC_MANAGER_HXX
+#define INCLUDED_VCL_INC_GRAPHIC_MANAGER_HXX
+
+#include <sal/types.h>
+#include <rtl/ustring.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/animate.hxx>
+#include <vcl/vectorgraphicdata.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/timer.hxx>
+
+#include <officecfg/Office/Common.hxx>
+#include <unotools/configmgr.hxx>
+
+#include <memory>
+#include <chrono>
+#include <unordered_set>
+
+class ImpGraphic;
+
+namespace vcl
+{
+namespace graphic
+{
+class Manager final
+{
+private:
+    std::unordered_set<ImpGraphic*> m_pImpGraphicList;
+    sal_Int64 mnTotalCacheSize;
+    sal_Int64 mnUsedSize;
+    Timer maSwapOutTimer;
+
+    Manager();
+
+    void registerGraphic(std::shared_ptr<ImpGraphic>& rImpGraphic, OUString const& rsContext);
+
+    DECL_LINK(SwapOutTimerHandler, Timer*, void);
+
+public:
+    static Manager& get();
+
+    void swappedIn(const ImpGraphic* pImpGraphic);
+    void swappedOut(const ImpGraphic* pImpGraphic);
+
+    void reduceGraphicMemory();
+    void changeExisting(const ImpGraphic* pImpGraphic, sal_Int64 nOldSize);
+    void unregisterGraphic(ImpGraphic* pImpGraphic);
+
+    std::shared_ptr<ImpGraphic> copy(std::shared_ptr<ImpGraphic> const& pImpGraphic);
+    std::shared_ptr<ImpGraphic> newInstance();
+    std::shared_ptr<ImpGraphic> newInstance(const Bitmap& rBitmap);
+    std::shared_ptr<ImpGraphic> newInstance(const BitmapEx& rBitmapEx);
+    std::shared_ptr<ImpGraphic> newInstance(const VectorGraphicDataPtr& rVectorGraphicDataPtr);
+    std::shared_ptr<ImpGraphic> newInstance(const Animation& rAnimation);
+    std::shared_ptr<ImpGraphic> newInstance(const GDIMetaFile& rMtf);
+};
+}
+} // end namespace vcl::graphic
+
+#endif // INCLUDED_VCL_INC_GRAPHIC_MANAGER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/impgraph.hxx b/vcl/inc/impgraph.hxx
index a60296fde556..a24f786a5b86 100644
--- a/vcl/inc/impgraph.hxx
+++ b/vcl/inc/impgraph.hxx
@@ -21,6 +21,7 @@
 #define INCLUDED_VCL_INC_IMPGRAPH_HXX
 
 #include <vcl/GraphicExternalLink.hxx>
+#include "graphic/Manager.hxx"
 
 struct ImpSwapInfo
 {
@@ -32,6 +33,7 @@ class OutputDevice;
 class GfxLink;
 struct ImpSwapFile;
 class GraphicConversionParameters;
+class ImpGraphic;
 
 class GraphicID
 {
@@ -62,6 +64,7 @@ class ImpGraphic final
 {
     friend class Graphic;
     friend class GraphicID;
+    friend class vcl::graphic::Manager;
 
 private:
 
@@ -81,18 +84,20 @@ private:
     std::unique_ptr<GraphicID>   mpGraphicID;
     GraphicExternalLink          maGraphicExternalLink;
 
-private:
+    std::chrono::high_resolution_clock::time_point maLastUsed;
 
-                        ImpGraphic();
-                        ImpGraphic( const ImpGraphic& rImpGraphic );
-                        ImpGraphic( ImpGraphic&& rImpGraphic );
-                        ImpGraphic( const Bitmap& rBmp );
-                        ImpGraphic( const BitmapEx& rBmpEx );
-                        ImpGraphic(const VectorGraphicDataPtr& rVectorGraphicDataPtr);
-                        ImpGraphic( const Animation& rAnimation );
-                        ImpGraphic( const GDIMetaFile& rMtf );
 public:
-                        ~ImpGraphic();
+    ImpGraphic();
+    ImpGraphic( const ImpGraphic& rImpGraphic );
+    ImpGraphic( ImpGraphic&& rImpGraphic );
+    ImpGraphic( const GraphicExternalLink& rExternalLink);
+    ImpGraphic( const Bitmap& rBmp );
+    ImpGraphic( const BitmapEx& rBmpEx );
+    ImpGraphic(const VectorGraphicDataPtr& rVectorGraphicDataPtr);
+    ImpGraphic( const Animation& rAnimation );
+    ImpGraphic( const GDIMetaFile& rMtf );
+    ~ImpGraphic();
+
 private:
 
     ImpGraphic&         operator=( const ImpGraphic& rImpGraphic );
@@ -196,6 +201,8 @@ private:
     const css::uno::Sequence<sal_Int8>& getPdfData() const;
 
     void setPdfData(const css::uno::Sequence<sal_Int8>& rPdfData);
+
+    bool ensureAvailable () const;
 };
 
 #endif // INCLUDED_VCL_INC_IMPGRAPH_HXX
diff --git a/vcl/source/gdi/graph.cxx b/vcl/source/gdi/graph.cxx
index fdaaabf38612..cdc747eae019 100644
--- a/vcl/source/gdi/graph.cxx
+++ b/vcl/source/gdi/graph.cxx
@@ -182,14 +182,14 @@ void ImplDrawDefault( OutputDevice* pOutDev, const OUString* pText,
 } // end anonymous namespace
 
 Graphic::Graphic()
-    : mxImpGraphic(new ImpGraphic)
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance())
 {
 }
 
 Graphic::Graphic(const Graphic& rGraphic)
 {
     if( rGraphic.IsAnimated() )
-        mxImpGraphic.reset(new ImpGraphic(*rGraphic.mxImpGraphic));
+        mxImpGraphic = vcl::graphic::Manager::get().copy(rGraphic.mxImpGraphic);
     else
         mxImpGraphic = rGraphic.mxImpGraphic;
 }
@@ -200,27 +200,27 @@ Graphic::Graphic(Graphic&& rGraphic)
 }
 
 Graphic::Graphic(const Bitmap& rBmp)
-    : mxImpGraphic(new ImpGraphic(rBmp))
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance(rBmp))
 {
 }
 
 Graphic::Graphic(const BitmapEx& rBmpEx)
-    : mxImpGraphic(new ImpGraphic(rBmpEx))
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance(rBmpEx))
 {
 }
 
 Graphic::Graphic(const VectorGraphicDataPtr& rVectorGraphicDataPtr)
-    : mxImpGraphic(new ImpGraphic(rVectorGraphicDataPtr))
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance(rVectorGraphicDataPtr))
 {
 }
 
 Graphic::Graphic(const Animation& rAnimation)
-    : mxImpGraphic(new ImpGraphic(rAnimation))
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance(rAnimation))
 {
 }
 
 Graphic::Graphic(const GDIMetaFile& rMtf)
-    : mxImpGraphic(new ImpGraphic(rMtf))
+    : mxImpGraphic(vcl::graphic::Manager::get().newInstance(rMtf))
 {
 }
 
@@ -234,19 +234,19 @@ Graphic::Graphic( const css::uno::Reference< css::graphic::XGraphic >& rxGraphic
     if( pGraphic )
     {
         if (pGraphic->IsAnimated())
-            mxImpGraphic.reset(new ImpGraphic(*pGraphic->mxImpGraphic));
+            mxImpGraphic = vcl::graphic::Manager::get().copy(pGraphic->mxImpGraphic);
         else
             mxImpGraphic = pGraphic->mxImpGraphic;
     }
     else
-        mxImpGraphic.reset(new ImpGraphic);
+        mxImpGraphic = vcl::graphic::Manager::get().newInstance();
 }
 
 void Graphic::ImplTestRefCount()
 {
     if (mxImpGraphic.use_count() > 1)
     {
-        mxImpGraphic.reset(new ImpGraphic(*mxImpGraphic));
+        mxImpGraphic = vcl::graphic::Manager::get().copy(mxImpGraphic);
     }
 }
 
@@ -255,13 +255,9 @@ Graphic& Graphic::operator=( const Graphic& rGraphic )
     if( &rGraphic != this )
     {
         if( rGraphic.IsAnimated() )
-        {
-            mxImpGraphic.reset(new ImpGraphic(*rGraphic.mxImpGraphic));
-        }
+            mxImpGraphic = vcl::graphic::Manager::get().copy(rGraphic.mxImpGraphic);
         else
-        {
             mxImpGraphic = rGraphic.mxImpGraphic;
-        }
     }
 
     return *this;
diff --git a/vcl/source/gdi/impgraph.cxx b/vcl/source/gdi/impgraph.cxx
index d32f93eab3b4..13f09ee2bb9c 100644
--- a/vcl/source/gdi/impgraph.cxx
+++ b/vcl/source/gdi/impgraph.cxx
@@ -175,7 +175,8 @@ ImpGraphic::ImpGraphic() :
         meType          ( GraphicType::NONE ),
         mnSizeBytes     ( 0 ),
         mbSwapOut       ( false ),
-        mbDummyContext  ( false )
+        mbDummyContext  ( false ),
+        maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
@@ -192,6 +193,7 @@ ImpGraphic::ImpGraphic(const ImpGraphic& rImpGraphic)
     , maVectorGraphicData(rImpGraphic.maVectorGraphicData)
     , maPdfData(rImpGraphic.maPdfData)
     , maGraphicExternalLink(rImpGraphic.maGraphicExternalLink)
+    , maLastUsed (std::chrono::high_resolution_clock::now())
 {
     if( rImpGraphic.mpGfxLink )
         mpGfxLink = o3tl::make_unique<GfxLink>( *rImpGraphic.mpGfxLink );
@@ -218,6 +220,7 @@ ImpGraphic::ImpGraphic(ImpGraphic&& rImpGraphic)
     , maVectorGraphicData(std::move(rImpGraphic.maVectorGraphicData))
     , maPdfData(std::move(rImpGraphic.maPdfData))
     , maGraphicExternalLink(rImpGraphic.maGraphicExternalLink)
+    , maLastUsed (std::chrono::high_resolution_clock::now())
 {
     rImpGraphic.ImplClear();
     rImpGraphic.mbDummyContext = false;
@@ -228,7 +231,8 @@ ImpGraphic::ImpGraphic( const Bitmap& rBitmap ) :
         meType          ( !rBitmap.IsEmpty() ? GraphicType::Bitmap : GraphicType::NONE ),
         mnSizeBytes     ( 0 ),
         mbSwapOut       ( false ),
-        mbDummyContext  ( false )
+        mbDummyContext  ( false ),
+        maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
@@ -237,7 +241,8 @@ ImpGraphic::ImpGraphic( const BitmapEx& rBitmapEx ) :
         meType          ( !rBitmapEx.IsEmpty() ? GraphicType::Bitmap : GraphicType::NONE ),
         mnSizeBytes     ( 0 ),
         mbSwapOut       ( false ),
-        mbDummyContext  ( false )
+        mbDummyContext  ( false ),
+        maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
@@ -246,7 +251,8 @@ ImpGraphic::ImpGraphic(const VectorGraphicDataPtr& rVectorGraphicDataPtr)
     mnSizeBytes( 0 ),
     mbSwapOut( false ),
     mbDummyContext  ( false ),
-    maVectorGraphicData(rVectorGraphicDataPtr)
+    maVectorGraphicData(rVectorGraphicDataPtr),
+    maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
@@ -256,7 +262,8 @@ ImpGraphic::ImpGraphic( const Animation& rAnimation ) :
         meType          ( GraphicType::Bitmap ),
         mnSizeBytes     ( 0 ),
         mbSwapOut       ( false ),
-        mbDummyContext  ( false )
+        mbDummyContext  ( false ),
+        maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
@@ -265,18 +272,22 @@ ImpGraphic::ImpGraphic( const GDIMetaFile& rMtf ) :
         meType          ( GraphicType::GdiMetafile ),
         mnSizeBytes     ( 0 ),
         mbSwapOut       ( false ),
-        mbDummyContext  ( false )
+        mbDummyContext  ( false ),
+        maLastUsed (std::chrono::high_resolution_clock::now())
 {
 }
 
 ImpGraphic::~ImpGraphic()
 {
+    vcl::graphic::Manager::get().unregisterGraphic(this);
 }
 
 ImpGraphic& ImpGraphic::operator=( const ImpGraphic& rImpGraphic )
 {
     if( &rImpGraphic != this )
     {
+        sal_Int64 aOldSizeBytes = mnSizeBytes;
+
         maMetaFile = rImpGraphic.maMetaFile;
         meType = rImpGraphic.meType;
         mnSizeBytes = rImpGraphic.mnSizeBytes;
@@ -308,6 +319,9 @@ ImpGraphic& ImpGraphic::operator=( const ImpGraphic& rImpGraphic )
 
         maVectorGraphicData = rImpGraphic.maVectorGraphicData;
         maPdfData = rImpGraphic.maPdfData;
+        maLastUsed = std::chrono::high_resolution_clock::now();
+
+        vcl::graphic::Manager::get().changeExisting(this, aOldSizeBytes);
     }
 
     return *this;
@@ -315,6 +329,8 @@ ImpGraphic& ImpGraphic::operator=( const ImpGraphic& rImpGraphic )
 
 ImpGraphic& ImpGraphic::operator=(ImpGraphic&& rImpGraphic)
 {
+    sal_Int64 aOldSizeBytes = mnSizeBytes;
+
     maMetaFile = std::move(rImpGraphic.maMetaFile);
     meType = rImpGraphic.meType;
     mnSizeBytes = rImpGraphic.mnSizeBytes;
@@ -332,6 +348,9 @@ ImpGraphic& ImpGraphic::operator=(ImpGraphic&& rImpGraphic)
 
     rImpGraphic.ImplClear();
     rImpGraphic.mbDummyContext = false;
+    maLastUsed = std::chrono::high_resolution_clock::now();
+
+    vcl::graphic::Manager::get().changeExisting(this, aOldSizeBytes);
 
     return *this;
 }
@@ -462,7 +481,9 @@ void ImpGraphic::ImplClear()
     // cleanup
     ImplClearGraphics();
     meType = GraphicType::NONE;
+    sal_Int64 nOldSize = mnSizeBytes;
     mnSizeBytes = 0;
+    vcl::graphic::Manager::get().changeExisting(this, nOldSize);
     maGraphicExternalLink.msURL.clear();
 }
 
@@ -481,6 +502,8 @@ bool ImpGraphic::ImplIsTransparent() const
 {
     bool bRet(true);
 
+    ensureAvailable();
+
     if( meType == GraphicType::Bitmap && !maVectorGraphicData.get())
     {
         bRet = ( mpAnimation ? mpAnimation->IsTransparent() : maEx.IsTransparent() );
@@ -493,6 +516,8 @@ bool ImpGraphic::ImplIsAlpha() const
 {
     bool bRet(false);
 
+    ensureAvailable();
+
     if(maVectorGraphicData.get())
     {
         bRet = true;
@@ -507,11 +532,14 @@ bool ImpGraphic::ImplIsAlpha() const
 
 bool ImpGraphic::ImplIsAnimated() const
 {
+    ensureAvailable();
     return( mpAnimation != nullptr );
 }
 
 bool ImpGraphic::ImplIsEPS() const
 {
+    ensureAvailable();
+
     return( ( meType == GraphicType::GdiMetafile ) &&
             ( maMetaFile.GetActionSize() > 0 ) &&
             ( maMetaFile.GetAction( 0 )->GetType() == MetaActionType::EPS ) );
@@ -521,6 +549,8 @@ Bitmap ImpGraphic::ImplGetBitmap(const GraphicConversionParameters& rParameters)
 {
     Bitmap aRetBmp;
 
+    ensureAvailable();
+
     if( meType == GraphicType::Bitmap )
     {
         if(maVectorGraphicData.get() && maEx.IsEmpty())
@@ -629,6 +659,8 @@ BitmapEx ImpGraphic::ImplGetBitmapEx(const GraphicConversionParameters& rParamet
 {
     BitmapEx aRetBmpEx;
 
+    ensureAvailable();
+
     if( meType == GraphicType::Bitmap )
     {
         if(maVectorGraphicData.get() && maEx.IsEmpty())
@@ -666,6 +698,7 @@ Animation ImpGraphic::ImplGetAnimation() const
 {
     Animation aAnimation;
 
+    ensureAvailable();
     if( mpAnimation )
         aAnimation = *mpAnimation;
 
@@ -674,11 +707,13 @@ Animation ImpGraphic::ImplGetAnimation() const
 
 const BitmapEx& ImpGraphic::ImplGetBitmapExRef() const
 {
+    ensureAvailable();
     return maEx;
 }
 
 const GDIMetaFile& ImpGraphic::ImplGetGDIMetaFile() const
 {
+    ensureAvailable();
     if (!maMetaFile.GetActionSize()
         && maVectorGraphicData.get()
         && (VectorGraphicDataType::Emf == maVectorGraphicData->getVectorGraphicDataType()
@@ -938,6 +973,7 @@ sal_uLong ImpGraphic::ImplGetSizeBytes() const
 
 void ImpGraphic::ImplDraw( OutputDevice* pOutDev, const Point& rDestPt ) const
 {
+    ensureAvailable();
     if( ImplIsSupportedGraphic() && !ImplIsSwapOut() )
     {
         switch( meType )
@@ -974,6 +1010,7 @@ void ImpGraphic::ImplDraw( OutputDevice* pOutDev, const Point& rDestPt ) const
 void ImpGraphic::ImplDraw( OutputDevice* pOutDev,
                            const Point& rDestPt, const Size& rDestSize ) const
 {
+    ensureAvailable();
     if( ImplIsSupportedGraphic() && !ImplIsSwapOut() )
     {
         switch( meType )
@@ -1015,6 +1052,8 @@ void ImpGraphic::ImplStartAnimation( OutputDevice* pOutDev, const Point& rDestPt
                                      const Size& rDestSize, long nExtraData,
                                      OutputDevice* pFirstFrameOutDev )
 {
+    ensureAvailable();
+
     if( ImplIsSupportedGraphic() && !ImplIsSwapOut() && mpAnimation )
         mpAnimation->Start( pOutDev, rDestPt, rDestSize, nExtraData, pFirstFrameOutDev );
 }
@@ -1043,6 +1082,7 @@ Link<Animation*,void> ImpGraphic::ImplGetAnimationNotifyHdl() const
 
 sal_uInt32 ImpGraphic::ImplGetAnimationLoopCount() const
 {
+    ensureAvailable();
     return( mpAnimation ? mpAnimation->GetLoopCount() : 0 );
 }
 
@@ -1187,6 +1227,8 @@ bool ImpGraphic::ImplWriteEmbedded( SvStream& rOStm )
 {
     bool bRet = false;
 
+    ensureAvailable();
+
     if( ( meType != GraphicType::NONE ) && ( meType != GraphicType::Default ) && !ImplIsSwapOut() )
     {
         const MapMode   aMapMode( ImplGetPrefMapMode() );
@@ -1317,6 +1359,8 @@ bool ImpGraphic::ImplSwapOut()
         }
     }
 
+    if (bRet)
+        vcl::graphic::Manager::get().swappedOut(this);
     return bRet;
 }
 
@@ -1348,6 +1392,15 @@ bool ImpGraphic::ImplSwapOut( SvStream* xOStm )
     return bRet;
 }
 
+bool ImpGraphic::ensureAvailable() const
+{
+    auto pThis = const_cast<ImpGraphic*>(this);
+    pThis->maLastUsed = std::chrono::high_resolution_clock::now();
+    if (ImplIsSwapOut())
+        return pThis->ImplSwapIn();
+    return true;
+}
+
 bool ImpGraphic::ImplSwapIn()
 {
     bool bRet = false;
@@ -1383,6 +1436,9 @@ bool ImpGraphic::ImplSwapIn()
         }
     }
 
+    if (bRet)
+        vcl::graphic::Manager::get().swappedIn(this);
+
     return bRet;
 }
 
@@ -1429,6 +1485,8 @@ bool ImpGraphic::ImplSwapIn( SvStream* xIStm )
 
 void ImpGraphic::ImplSetLink( const GfxLink& rGfxLink )
 {
+    ensureAvailable();
+
     mpGfxLink = o3tl::make_unique<GfxLink>( rGfxLink );
 
     if( mpGfxLink->IsNative() )
@@ -1437,6 +1495,8 @@ void ImpGraphic::ImplSetLink( const GfxLink& rGfxLink )
 
 GfxLink ImpGraphic::ImplGetLink()
 {
+    ensureAvailable();
+
     return( mpGfxLink ? *mpGfxLink : GfxLink() );
 }
 
@@ -1449,6 +1509,8 @@ BitmapChecksum ImpGraphic::ImplGetChecksum() const
 {
     BitmapChecksum nRet = 0;
 
+    ensureAvailable();
+
     if( ImplIsSupportedGraphic() && !ImplIsSwapOut() )
     {
         switch( meType )
@@ -1493,6 +1555,8 @@ bool ImpGraphic::ImplExportNative( SvStream& rOStm ) const
 {
     bool bResult = false;
 
+    ensureAvailable();
+
     if( !rOStm.GetError() )
     {
         if( !ImplIsSwapOut() )
diff --git a/vcl/source/graphic/Manager.cxx b/vcl/source/graphic/Manager.cxx
new file mode 100644
index 000000000000..ee161c23d878
--- /dev/null
+++ b/vcl/source/graphic/Manager.cxx
@@ -0,0 +1,200 @@
+/* -*- 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 <graphic/Manager.hxx>
+#include <impgraph.hxx>
+#include <vcl/lazydelete.hxx>
+#include <o3tl/make_unique.hxx>
+
+using namespace css;
+
+namespace vcl
+{
+namespace graphic
+{
+namespace
+{
+void setTotalCacheSizeFromConfigIfPossible(sal_Int64& nTotalCacheSize)
+{
+    if (utl::ConfigManager::IsFuzzing())
+        return;
+
+    try
+    {
+        nTotalCacheSize = officecfg::Office::Common::Cache::GraphicManager::TotalCacheSize::get();
+    }
+    catch (...)
+    {
+    }
+}
+}
+
+Manager& Manager::get()
+{
+    static std::unique_ptr<Manager> gStaticManager(new Manager);
+    return *gStaticManager;
+}
+
+Manager::Manager()
+    : mnTotalCacheSize(50000000)
+    , mnUsedSize(0)
+    , maSwapOutTimer("graphic::Manager maSwapOutTimer")
+{
+    setTotalCacheSizeFromConfigIfPossible(mnTotalCacheSize);
+
+    maSwapOutTimer.SetInvokeHandler(LINK(this, Manager, SwapOutTimerHandler));
+    maSwapOutTimer.SetTimeout(10000);
+    maSwapOutTimer.SetDebugName("graphic::Manager maSwapOutTimer");
+    maSwapOutTimer.Start();
+}
+
+void Manager::reduceGraphicMemory()
+{
+    for (ImpGraphic* pEachImpGraphic : m_pImpGraphicList)
+    {
+        if (mnUsedSize < mnTotalCacheSize * 0.7)
+            return;
+
+        sal_Int64 nCurrentGraphicSize = pEachImpGraphic->ImplGetSizeBytes();
+        if (!pEachImpGraphic->ImplIsSwapOut() && nCurrentGraphicSize > 1000000)
+        {
+            if (!pEachImpGraphic->mpContext)
+            {
+                auto aCurrent = std::chrono::high_resolution_clock::now();
+                auto aDeltaTime = aCurrent - pEachImpGraphic->maLastUsed;
+                auto aSeconds = std::chrono::duration_cast<std::chrono::seconds>(aDeltaTime);
+                double nSeconds = aSeconds.count();
+                if (nSeconds > 10)
+                    pEachImpGraphic->ImplSwapOut();
+            }
+        }
+    }
+}
+
+IMPL_LINK(Manager, SwapOutTimerHandler, Timer*, pTimer, void)
+{
+    pTimer->Stop();
+    reduceGraphicMemory();
+    pTimer->Start();
+}
+
+void Manager::registerGraphic(std::shared_ptr<ImpGraphic>& pImpGraphic,
+                              OUString const& /*rsContext*/)
+{
+    // make some space first
+    if (mnUsedSize > mnTotalCacheSize)
+        reduceGraphicMemory();
+
+    // Insert and update the used size (bytes)
+    mnUsedSize += pImpGraphic->ImplGetSizeBytes();
+    m_pImpGraphicList.insert(pImpGraphic.get());
+
+    // calculate size of the graphic set
+    sal_Int64 calculatedSize = 0;
+    for (ImpGraphic* pEachImpGraphic : m_pImpGraphicList)
+    {
+        if (!pEachImpGraphic->ImplIsSwapOut())
+        {
+            calculatedSize += pEachImpGraphic->ImplGetSizeBytes();
+        }
+    }
+
+    if (calculatedSize != mnUsedSize)
+    {
+        SAL_WARN_IF(calculatedSize != mnUsedSize, "vcl.gdi",
+                    "Calculated size mismatch. Variable size is '"
+                        << mnUsedSize << "' but calculated size is '" << calculatedSize << "'");
+        mnUsedSize = calculatedSize;
+    }
+}
+
+void Manager::unregisterGraphic(ImpGraphic* pImpGraphic)
+{
+    mnUsedSize -= pImpGraphic->ImplGetSizeBytes();
+    m_pImpGraphicList.erase(pImpGraphic);
+}
+
+std::shared_ptr<ImpGraphic> Manager::copy(std::shared_ptr<ImpGraphic> const& rImpGraphicPtr)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(*rImpGraphicPtr.get());
+    registerGraphic(pReturn, "Copy");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance()
+{
+    auto pReturn = std::make_shared<ImpGraphic>();
+    registerGraphic(pReturn, "Empty");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance(const Bitmap& rBitmap)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(rBitmap);
+    registerGraphic(pReturn, "Bitmap");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance(const BitmapEx& rBitmapEx)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(rBitmapEx);
+    registerGraphic(pReturn, "BitmapEx");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance(const Animation& rAnimation)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(rAnimation);
+    registerGraphic(pReturn, "Animation");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance(const VectorGraphicDataPtr& rVectorGraphicDataPtr)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(rVectorGraphicDataPtr);
+    registerGraphic(pReturn, "VectorGraphic");
+    return pReturn;
+}
+
+std::shared_ptr<ImpGraphic> Manager::newInstance(const GDIMetaFile& rMetaFile)
+{
+    auto pReturn = std::make_shared<ImpGraphic>(rMetaFile);
+    registerGraphic(pReturn, "Metafile");
+    return pReturn;
+}
+
+void Manager::swappedIn(const ImpGraphic* pImpGraphic)
+{
+    mnUsedSize += pImpGraphic->ImplGetSizeBytes();
+}
+
+void Manager::swappedOut(const ImpGraphic* pImpGraphic)
+{
+    mnUsedSize -= pImpGraphic->ImplGetSizeBytes();
+}
+
+void Manager::changeExisting(const ImpGraphic* pImpGraphic, sal_Int64 nOldSizeBytes)
+{
+    mnUsedSize -= nOldSizeBytes;
+    mnUsedSize += pImpGraphic->ImplGetSizeBytes();
+}
+}
+} // end vcl::graphic
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */