/* -*- 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 <sal/config.h>
#include <sal/log.hxx>

#include <comphelper/fileformat.h>
#include <o3tl/deleter.hxx>
#include <tools/fract.hxx>
#include <tools/vcompat.hxx>
#include <tools/urlobj.hxx>
#include <tools/stream.hxx>
#include <unotools/ucbhelper.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <unotools/tempfile.hxx>
#include <vcl/outdev.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/virdev.hxx>
#include <vcl/gfxlink.hxx>
#include <vcl/cvtgrf.hxx>
#include <vcl/graph.hxx>
#include <vcl/metaact.hxx>
#include <impgraph.hxx>
#include <com/sun/star/graphic/XPrimitive2D.hpp>
#include <vcl/dibtools.hxx>
#include <map>
#include <memory>
#include <vcl/gdimetafiletools.hxx>
#include <TypeSerializer.hxx>
#include <vcl/pdfread.hxx>

#define GRAPHIC_MTFTOBMP_MAXEXT     2048
#define GRAPHIC_STREAMBUFSIZE       8192UL

#define SYS_WINMETAFILE             0x00000003L
#define SYS_WNTMETAFILE             0x00000004L
#define SYS_OS2METAFILE             0x00000005L
#define SYS_MACMETAFILE             0x00000006L

#define GRAPHIC_FORMAT_50           COMPAT_FORMAT( 'G', 'R', 'F', '5' )
#define NATIVE_FORMAT_50            COMPAT_FORMAT( 'N', 'A', 'T', '5' )

namespace {

constexpr sal_uInt32 constSvgMagic((sal_uInt32('s') << 24) | (sal_uInt32('v') << 16) | (sal_uInt32('g') << 8) | sal_uInt32('0'));
constexpr sal_uInt32 constWmfMagic((sal_uInt32('w') << 24) | (sal_uInt32('m') << 16) | (sal_uInt32('f') << 8) | sal_uInt32('0'));
constexpr sal_uInt32 constEmfMagic((sal_uInt32('e') << 24) | (sal_uInt32('m') << 16) | (sal_uInt32('f') << 8) | sal_uInt32('0'));
constexpr sal_uInt32 constPdfMagic((sal_uInt32('s') << 24) | (sal_uInt32('v') << 16) | (sal_uInt32('g') << 8) | sal_uInt32('0'));

}

using namespace com::sun::star;

class ImpSwapFile
{
private:
    INetURLObject maSwapURL;
    OUString maOriginURL;

public:
    ImpSwapFile(INetURLObject const & rSwapURL, OUString const & rOriginURL)
        : maSwapURL(rSwapURL)
        , maOriginURL(rOriginURL)
    {
    }

    ~ImpSwapFile() COVERITY_NOEXCEPT_FALSE
    {
        utl::UCBContentHelper::Kill(maSwapURL.GetMainURL(INetURLObject::DecodeMechanism::NONE));
    }

    INetURLObject getSwapURL()
    {
        return maSwapURL;
    }

    OUString getSwapURLString()
    {
        return maSwapURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
    }

    OUString const & getOriginURL() { return maOriginURL; }

    std::unique_ptr<SvStream> openOutputStream()
    {
        OUString sSwapURL = getSwapURLString();
        if (!sSwapURL.isEmpty())
        {
            try
            {
                return utl::UcbStreamHelper::CreateStream(sSwapURL, StreamMode::READWRITE | StreamMode::SHARE_DENYWRITE);
            }
            catch (const css::uno::Exception&)
            {
            }
        }
        return std::unique_ptr<SvStream>();
    }
};

OUString ImpGraphic::getSwapFileURL()
{
    if (mpSwapFile)
        return mpSwapFile->getSwapURL().GetMainURL(INetURLObject::DecodeMechanism::NONE);
    return OUString();
}

ImpGraphic::ImpGraphic() :
        meType          ( GraphicType::NONE ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared      ( false )
{
}

ImpGraphic::ImpGraphic(const ImpGraphic& rImpGraphic)
    : maMetaFile(rImpGraphic.maMetaFile)
    , maBitmapEx(rImpGraphic.maBitmapEx)
    , maSwapInfo(rImpGraphic.maSwapInfo)
    , mpContext(rImpGraphic.mpContext)
    , mpSwapFile(rImpGraphic.mpSwapFile)
    , mpGfxLink(rImpGraphic.mpGfxLink)
    , meType(rImpGraphic.meType)
    , mnSizeBytes(rImpGraphic.mnSizeBytes)
    , mbSwapOut(rImpGraphic.mbSwapOut)
    , mbDummyContext(rImpGraphic.mbDummyContext)
    , maVectorGraphicData(rImpGraphic.maVectorGraphicData)
    , maGraphicExternalLink(rImpGraphic.maGraphicExternalLink)
    , maLastUsed (std::chrono::high_resolution_clock::now())
    , mbPrepared (rImpGraphic.mbPrepared)
{
    if( rImpGraphic.mpAnimation )
    {
        mpAnimation = std::make_unique<Animation>( *rImpGraphic.mpAnimation );
        maBitmapEx = mpAnimation->GetBitmapEx();
    }
}

ImpGraphic::ImpGraphic(ImpGraphic&& rImpGraphic) noexcept
    : maMetaFile(std::move(rImpGraphic.maMetaFile))
    , maBitmapEx(std::move(rImpGraphic.maBitmapEx))
    , maSwapInfo(std::move(rImpGraphic.maSwapInfo))
    , mpAnimation(std::move(rImpGraphic.mpAnimation))
    , mpContext(std::move(rImpGraphic.mpContext))
    , mpSwapFile(std::move(rImpGraphic.mpSwapFile))
    , mpGfxLink(std::move(rImpGraphic.mpGfxLink))
    , meType(rImpGraphic.meType)
    , mnSizeBytes(rImpGraphic.mnSizeBytes)
    , mbSwapOut(rImpGraphic.mbSwapOut)
    , mbDummyContext(rImpGraphic.mbDummyContext)
    , maVectorGraphicData(std::move(rImpGraphic.maVectorGraphicData))
    , maGraphicExternalLink(rImpGraphic.maGraphicExternalLink)
    , maLastUsed (std::chrono::high_resolution_clock::now())
    , mbPrepared (rImpGraphic.mbPrepared)
{
    rImpGraphic.ImplClear();
    rImpGraphic.mbDummyContext = false;
}

ImpGraphic::ImpGraphic(GraphicExternalLink const & rGraphicExternalLink) :
        meType          ( GraphicType::Default ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maGraphicExternalLink(rGraphicExternalLink),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared (false)
{
}

ImpGraphic::ImpGraphic( const Bitmap& rBitmap ) :
        maBitmapEx            ( rBitmap ),
        meType          ( !rBitmap.IsEmpty() ? GraphicType::Bitmap : GraphicType::NONE ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared (false)
{
}

ImpGraphic::ImpGraphic( const BitmapEx& rBitmapEx ) :
        maBitmapEx            ( rBitmapEx ),
        meType          ( !rBitmapEx.IsEmpty() ? GraphicType::Bitmap : GraphicType::NONE ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared (false)
{
}

ImpGraphic::ImpGraphic(const std::shared_ptr<VectorGraphicData>& rVectorGraphicDataPtr)
:   meType( rVectorGraphicDataPtr ? GraphicType::Bitmap : GraphicType::NONE ),
    mnSizeBytes( 0 ),
    mbSwapOut( false ),
    mbDummyContext  ( false ),
    maVectorGraphicData(rVectorGraphicDataPtr),
    maLastUsed (std::chrono::high_resolution_clock::now()),
    mbPrepared (false)
{
}

ImpGraphic::ImpGraphic( const Animation& rAnimation ) :
        maBitmapEx      ( rAnimation.GetBitmapEx() ),
        mpAnimation     ( std::make_unique<Animation>( rAnimation ) ),
        meType          ( GraphicType::Bitmap ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared (false)
{
}

ImpGraphic::ImpGraphic( const GDIMetaFile& rMtf ) :
        maMetaFile      ( rMtf ),
        meType          ( GraphicType::GdiMetafile ),
        mnSizeBytes     ( 0 ),
        mbSwapOut       ( false ),
        mbDummyContext  ( false ),
        maLastUsed (std::chrono::high_resolution_clock::now()),
        mbPrepared (false)
{
}

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;

        maSwapInfo = rImpGraphic.maSwapInfo;
        mpContext = rImpGraphic.mpContext;
        mbDummyContext = rImpGraphic.mbDummyContext;
        maGraphicExternalLink = rImpGraphic.maGraphicExternalLink;

        mpAnimation.reset();

        if ( rImpGraphic.mpAnimation )
        {
            mpAnimation = std::make_unique<Animation>( *rImpGraphic.mpAnimation );
            maBitmapEx = mpAnimation->GetBitmapEx();
        }
        else
        {
            maBitmapEx = rImpGraphic.maBitmapEx;
        }

        mbSwapOut = rImpGraphic.mbSwapOut;
        mpSwapFile = rImpGraphic.mpSwapFile;
        mbPrepared = rImpGraphic.mbPrepared;

        mpGfxLink = rImpGraphic.mpGfxLink;

        maVectorGraphicData = rImpGraphic.maVectorGraphicData;
        maLastUsed = std::chrono::high_resolution_clock::now();

        vcl::graphic::Manager::get().changeExisting(this, aOldSizeBytes);
    }

    return *this;
}

ImpGraphic& ImpGraphic::operator=(ImpGraphic&& rImpGraphic)
{
    sal_Int64 aOldSizeBytes = mnSizeBytes;

    maMetaFile = std::move(rImpGraphic.maMetaFile);
    meType = rImpGraphic.meType;
    mnSizeBytes = rImpGraphic.mnSizeBytes;
    maSwapInfo = std::move(rImpGraphic.maSwapInfo);
    mpContext = std::move(rImpGraphic.mpContext);
    mbDummyContext = rImpGraphic.mbDummyContext;
    mpAnimation = std::move(rImpGraphic.mpAnimation);
    maBitmapEx = std::move(rImpGraphic.maBitmapEx);
    mbSwapOut = rImpGraphic.mbSwapOut;
    mpSwapFile = std::move(rImpGraphic.mpSwapFile);
    mpGfxLink = std::move(rImpGraphic.mpGfxLink);
    maVectorGraphicData = std::move(rImpGraphic.maVectorGraphicData);
    maGraphicExternalLink = rImpGraphic.maGraphicExternalLink;
    mbPrepared = rImpGraphic.mbPrepared;

    rImpGraphic.ImplClear();
    rImpGraphic.mbDummyContext = false;
    maLastUsed = std::chrono::high_resolution_clock::now();

    vcl::graphic::Manager::get().changeExisting(this, aOldSizeBytes);

    return *this;
}

bool ImpGraphic::operator==( const ImpGraphic& rImpGraphic ) const
{
    bool bRet = false;

    if( this == &rImpGraphic )
        bRet = true;
    else if (mbPrepared && rImpGraphic.mbPrepared)
    {
        bRet = (*mpGfxLink == *rImpGraphic.mpGfxLink);
    }
    else if (isAvailable() && rImpGraphic.isAvailable())
    {
        switch( meType )
        {
            case GraphicType::NONE:
                bRet = true;
            break;

            case GraphicType::GdiMetafile:
            {
                if( rImpGraphic.maMetaFile == maMetaFile )
                    bRet = true;
            }
            break;

            case GraphicType::Bitmap:
            {
                if(maVectorGraphicData)
                {
                    if(maVectorGraphicData == rImpGraphic.maVectorGraphicData)
                    {
                        // equal instances
                        bRet = true;
                    }
                    else if(rImpGraphic.maVectorGraphicData)
                    {
                        // equal content
                        bRet = (*maVectorGraphicData) == (*rImpGraphic.maVectorGraphicData);
                    }
                }
                else if( mpAnimation )
                {
                    if( rImpGraphic.mpAnimation && ( *rImpGraphic.mpAnimation == *mpAnimation ) )
                        bRet = true;
                }
                else if( !rImpGraphic.mpAnimation && ( rImpGraphic.maBitmapEx == maBitmapEx ) )
                {
                    bRet = true;
                }
            }
            break;

            default:
            break;
        }
    }

    return bRet;
}

const std::shared_ptr<VectorGraphicData>& ImpGraphic::getVectorGraphicData() const
{
    ensureAvailable();

    return maVectorGraphicData;
}

void ImpGraphic::createSwapInfo()
{
    if (isSwappedOut())
        return;

    maSwapInfo.maPrefMapMode = ImplGetPrefMapMode();
    maSwapInfo.maPrefSize = ImplGetPrefSize();
    maSwapInfo.mbIsAnimated = ImplIsAnimated();
    maSwapInfo.mbIsEPS = ImplIsEPS();
    maSwapInfo.mbIsTransparent = ImplIsTransparent();
    maSwapInfo.mbIsAlpha = ImplIsAlpha();
    maSwapInfo.mnAnimationLoopCount = ImplGetAnimationLoopCount();
}

void ImpGraphic::ImplClearGraphics()
{
    maBitmapEx.Clear();
    maMetaFile.Clear();
    mpAnimation.reset();
    mpGfxLink.reset();
    maVectorGraphicData.reset();
}

void ImpGraphic::ImplSetPrepared(bool bAnimated, const Size* pSizeHint)
{
    mbPrepared = true;
    mbSwapOut = true;
    meType = GraphicType::Bitmap;

    SvMemoryStream aMemoryStream(const_cast<sal_uInt8*>(mpGfxLink->GetData()), mpGfxLink->GetDataSize(), StreamMode::READ | StreamMode::WRITE);

    if (pSizeHint)
    {
        maSwapInfo.maPrefSize = *pSizeHint;
        maSwapInfo.maPrefMapMode = MapMode(MapUnit::Map100thMM);
    }

    GraphicDescriptor aDescriptor(aMemoryStream, nullptr);
    if (aDescriptor.Detect(true))
    {
        if (!pSizeHint)
        {
            // If we have logic size, work with that, as later pixel -> logic
            // conversion will work with the output device DPI, not the graphic
            // DPI.
            Size aLogSize = aDescriptor.GetSize_100TH_MM();
            if (aLogSize.getWidth() && aLogSize.getHeight())
            {
                maSwapInfo.maPrefSize = aLogSize;
                maSwapInfo.maPrefMapMode = MapMode(MapUnit::Map100thMM);
            }
            else
            {
                maSwapInfo.maPrefSize = aDescriptor.GetSizePixel();
                maSwapInfo.maPrefMapMode = MapMode(MapUnit::MapPixel);
            }
        }

        maSwapInfo.maSizePixel = aDescriptor.GetSizePixel();
        maSwapInfo.mbIsTransparent = aDescriptor.IsTransparent();
        maSwapInfo.mbIsAlpha = aDescriptor.IsAlpha();
    } else {
        maSwapInfo.mbIsTransparent = false;
        maSwapInfo.mbIsAlpha = false;
    }

    maSwapInfo.mnAnimationLoopCount = 0;
    maSwapInfo.mbIsEPS = false;
    maSwapInfo.mbIsAnimated = bAnimated;
}

void ImpGraphic::ImplClear()
{
    mpSwapFile.reset();
    mbSwapOut = false;
    mbPrepared = false;

    // cleanup
    ImplClearGraphics();
    meType = GraphicType::NONE;
    sal_Int64 nOldSize = mnSizeBytes;
    mnSizeBytes = 0;
    vcl::graphic::Manager::get().changeExisting(this, nOldSize);
    maGraphicExternalLink.msURL.clear();
}

void ImpGraphic::ImplSetDefaultType()
{
    ImplClear();
    meType = GraphicType::Default;
}

bool ImpGraphic::ImplIsSupportedGraphic() const
{
    return( meType != GraphicType::NONE );
}

bool ImpGraphic::ImplIsTransparent() const
{
    bool bRet(true);

    if (mbSwapOut)
    {
        bRet = maSwapInfo.mbIsTransparent;
    }
    else if (meType == GraphicType::Bitmap && !maVectorGraphicData)
    {
        bRet = mpAnimation ? mpAnimation->IsTransparent() : maBitmapEx.IsTransparent();
    }

    return bRet;
}

bool ImpGraphic::ImplIsAlpha() const
{
    bool bRet(false);

    if (mbSwapOut)
    {
        bRet = maSwapInfo.mbIsAlpha;
    }
    else if (maVectorGraphicData)
    {
        bRet = true;
    }
    else if (meType == GraphicType::Bitmap)
    {
        bRet = (nullptr == mpAnimation && maBitmapEx.IsAlpha());
    }

    return bRet;
}

bool ImpGraphic::ImplIsAnimated() const
{
    return mbSwapOut ? maSwapInfo.mbIsAnimated : mpAnimation != nullptr;
}

bool ImpGraphic::ImplIsEPS() const
{
    if (mbSwapOut)
        return maSwapInfo.mbIsEPS;

    return( ( meType == GraphicType::GdiMetafile ) &&
            ( maMetaFile.GetActionSize() > 0 ) &&
            ( maMetaFile.GetAction( 0 )->GetType() == MetaActionType::EPS ) );
}

bool ImpGraphic::isAvailable() const
{
    return !mbPrepared && !mbSwapOut;
}

bool ImpGraphic::makeAvailable()
{
    return ensureAvailable();
}

BitmapEx ImpGraphic::getVectorGraphicReplacement() const
{
    BitmapEx aRet = maVectorGraphicData->getReplacement();

    if (maExPrefSize.getWidth() && maExPrefSize.getHeight())
    {
        aRet.SetPrefSize(maExPrefSize);
    }

    return aRet;
}

Bitmap ImpGraphic::ImplGetBitmap(const GraphicConversionParameters& rParameters) const
{
    Bitmap aRetBmp;

    ensureAvailable();

    if( meType == GraphicType::Bitmap )
    {
        if(maVectorGraphicData && maBitmapEx.IsEmpty())
        {
            // use maBitmapEx as local buffer for rendered svg
            const_cast< ImpGraphic* >(this)->maBitmapEx = getVectorGraphicReplacement();
        }

        const BitmapEx& rRetBmpEx = ( mpAnimation ? mpAnimation->GetBitmapEx() : maBitmapEx );

        aRetBmp = rRetBmpEx.GetBitmap( COL_WHITE );

        if(rParameters.getSizePixel().Width() || rParameters.getSizePixel().Height())
            aRetBmp.Scale(rParameters.getSizePixel());
    }
    else if( ( meType != GraphicType::Default ) && ImplIsSupportedGraphic() )
    {
        if(maBitmapEx.IsEmpty())
        {
            // calculate size
            ScopedVclPtrInstance< VirtualDevice > aVDev;
            Size aDrawSize(aVDev->LogicToPixel(maMetaFile.GetPrefSize(), maMetaFile.GetPrefMapMode()));

            if(rParameters.getSizePixel().Width() && rParameters.getSizePixel().Height())
            {
                // apply given size if exists
                aDrawSize = rParameters.getSizePixel();
            }

            if(aDrawSize.Width() && aDrawSize.Height() && !rParameters.getUnlimitedSize()
                && (aDrawSize.Width() > GRAPHIC_MTFTOBMP_MAXEXT || aDrawSize.Height() > GRAPHIC_MTFTOBMP_MAXEXT))
            {
                // limit bitmap size to a maximum of GRAPHIC_MTFTOBMP_MAXEXT x GRAPHIC_MTFTOBMP_MAXEXT
                double fWH(static_cast<double>(aDrawSize.Width()) / static_cast<double>(aDrawSize.Height()));

                if(fWH <= 1.0)
                {
                    aDrawSize.setWidth(basegfx::fround(GRAPHIC_MTFTOBMP_MAXEXT * fWH));
                    aDrawSize.setHeight(GRAPHIC_MTFTOBMP_MAXEXT);
                }
                else
                {
                    aDrawSize.setWidth(GRAPHIC_MTFTOBMP_MAXEXT);
                    aDrawSize.setHeight(basegfx::fround(GRAPHIC_MTFTOBMP_MAXEXT / fWH));
                }
            }

            // calculate pixel size. Normally, it's the same as aDrawSize, but may
            // need to be extended when hairlines are on the right or bottom edge
            Size aPixelSize(aDrawSize);

            if(GraphicType::GdiMetafile == ImplGetType())
            {
                // get hairline and full bound rect
                tools::Rectangle aHairlineRect;
                const tools::Rectangle aRect(maMetaFile.GetBoundRect(*aVDev, &aHairlineRect));

                if(!aRect.IsEmpty() && !aHairlineRect.IsEmpty())
                {
                    // expand if needed to allow bottom and right hairlines to be added
                    if(aRect.Right() == aHairlineRect.Right())
                    {
                        aPixelSize.setWidth(aPixelSize.getWidth() + 1);
                    }

                    if(aRect.Bottom() == aHairlineRect.Bottom())
                    {
                        aPixelSize.setHeight(aPixelSize.getHeight() + 1);
                    }
                }
            }

            if(aVDev->SetOutputSizePixel(aPixelSize))
            {
                if(rParameters.getAntiAliase())
                {
                    aVDev->SetAntialiasing(aVDev->GetAntialiasing() | AntialiasingFlags::EnableB2dDraw);
                }

                if(rParameters.getSnapHorVerLines())
                {
                    aVDev->SetAntialiasing(aVDev->GetAntialiasing() | AntialiasingFlags::PixelSnapHairline);
                }

                ImplDraw( aVDev.get(), Point(), aDrawSize );

                // use maBitmapEx as local buffer for rendered metafile
                const_cast< ImpGraphic* >(this)->maBitmapEx = aVDev->GetBitmapEx( Point(), aVDev->GetOutputSizePixel() );
            }
        }

        aRetBmp = maBitmapEx.GetBitmap();
    }

    if( !!aRetBmp )
    {
        aRetBmp.SetPrefMapMode( ImplGetPrefMapMode() );
        aRetBmp.SetPrefSize( ImplGetPrefSize() );
    }

    return aRetBmp;
}

BitmapEx ImpGraphic::ImplGetBitmapEx(const GraphicConversionParameters& rParameters) const
{
    BitmapEx aRetBmpEx;

    ensureAvailable();

    if( meType == GraphicType::Bitmap )
    {
        if(maVectorGraphicData && maBitmapEx.IsEmpty())
        {
            // use maBitmapEx as local buffer for rendered svg
            const_cast< ImpGraphic* >(this)->maBitmapEx = getVectorGraphicReplacement();
        }

        aRetBmpEx = ( mpAnimation ? mpAnimation->GetBitmapEx() : maBitmapEx );

        if(rParameters.getSizePixel().Width() || rParameters.getSizePixel().Height())
        {
            aRetBmpEx.Scale(
                rParameters.getSizePixel(),
                BmpScaleFlag::Fast);
        }
    }
    else if( ( meType != GraphicType::Default ) && ImplIsSupportedGraphic() )
    {
        if(maBitmapEx.IsEmpty())
        {
            const ImpGraphic aMonoMask( maMetaFile.GetMonochromeMtf( COL_BLACK ) );

            // use maBitmapEx as local buffer for rendered metafile
            const_cast< ImpGraphic* >(this)->maBitmapEx = BitmapEx(ImplGetBitmap(rParameters), aMonoMask.ImplGetBitmap(rParameters));
        }

        aRetBmpEx = maBitmapEx;
    }

    return aRetBmpEx;
}

Animation ImpGraphic::ImplGetAnimation() const
{
    Animation aAnimation;

    ensureAvailable();
    if( mpAnimation )
        aAnimation = *mpAnimation;

    return aAnimation;
}

const BitmapEx& ImpGraphic::ImplGetBitmapExRef() const
{
    ensureAvailable();
    return maBitmapEx;
}

const GDIMetaFile& ImpGraphic::ImplGetGDIMetaFile() const
{
    ensureAvailable();
    if (!maMetaFile.GetActionSize()
        && maVectorGraphicData
        && (VectorGraphicDataType::Emf == maVectorGraphicData->getVectorGraphicDataType()
            || VectorGraphicDataType::Wmf == maVectorGraphicData->getVectorGraphicDataType()))
    {
        // If we have a Emf/Wmf VectorGraphic object, we
        // need a way to get the Metafile data out of the primitive
        // representation. Use a strict virtual hook (MetafileAccessor)
        // to access the MetafilePrimitive2D directly. Also see comments in
        // XEmfParser about this.
        const std::deque< css::uno::Reference< css::graphic::XPrimitive2D > > aSequence(maVectorGraphicData->getPrimitive2DSequence());

        if (1 == aSequence.size())
        {
            // try to cast to MetafileAccessor implementation
            const css::uno::Reference< css::graphic::XPrimitive2D > xReference(aSequence[0]);
            const MetafileAccessor* pMetafileAccessor = dynamic_cast< const MetafileAccessor* >(xReference.get());

            if (pMetafileAccessor)
            {
                // it is a MetafileAccessor implementation, get Metafile
                pMetafileAccessor->accessMetafile(const_cast< ImpGraphic* >(this)->maMetaFile);
            }
        }
    }

    if (GraphicType::Bitmap == meType && !maMetaFile.GetActionSize())
    {
        // #i119735#
        // Use the local maMetaFile as container for a metafile-representation
        // of the bitmap graphic. This will be done only once, thus be buffered.
        // I checked all usages of maMetaFile, it is only used when type is not
        // GraphicType::Bitmap. In operator= it will get copied, thus buffering will
        // survive copying (change this if not wanted)
        ImpGraphic* pThat = const_cast< ImpGraphic* >(this);

        if(maVectorGraphicData && !maBitmapEx)
        {
            // use maBitmapEx as local buffer for rendered svg
            pThat->maBitmapEx = getVectorGraphicReplacement();
        }

        // #123983# directly create a metafile with the same PrefSize and PrefMapMode
        // the bitmap has, this will be an always correct metafile
        if(maBitmapEx.IsTransparent())
        {
            pThat->maMetaFile.AddAction(new MetaBmpExScaleAction(Point(), maBitmapEx.GetPrefSize(), maBitmapEx));
        }
        else
        {
            pThat->maMetaFile.AddAction(new MetaBmpScaleAction(Point(), maBitmapEx.GetPrefSize(), maBitmapEx.GetBitmap()));
        }

        pThat->maMetaFile.Stop();
        pThat->maMetaFile.WindStart();
        pThat->maMetaFile.SetPrefSize(maBitmapEx.GetPrefSize());
        pThat->maMetaFile.SetPrefMapMode(maBitmapEx.GetPrefMapMode());
    }

    return maMetaFile;
}

Size ImpGraphic::ImplGetSizePixel() const
{
    Size aSize;

    if (isSwappedOut())
        aSize = maSwapInfo.maSizePixel;
    else
        aSize = ImplGetBitmapEx(GraphicConversionParameters()).GetSizePixel();

    return aSize;
}

Size ImpGraphic::ImplGetPrefSize() const
{
    Size aSize;

    if (isSwappedOut())
    {
        aSize = maSwapInfo.maPrefSize;
    }
    else
    {
        switch( meType )
        {
            case GraphicType::NONE:
            case GraphicType::Default:
            break;

            case GraphicType::Bitmap:
            {
                if(maVectorGraphicData && maBitmapEx.IsEmpty())
                {
                    if (!maExPrefSize.getWidth() || !maExPrefSize.getHeight())
                    {
                        // svg not yet buffered in maBitmapEx, return size derived from range
                        const basegfx::B2DRange& rRange = maVectorGraphicData->getRange();

                        aSize = Size(basegfx::fround(rRange.getWidth()), basegfx::fround(rRange.getHeight()));
                    }
                    else
                    {
                        aSize = maExPrefSize;
                    }
                }
                else
                {
                    aSize = maBitmapEx.GetPrefSize();

                    if( !aSize.Width() || !aSize.Height() )
                    {
                        aSize = maBitmapEx.GetSizePixel();
                    }
                }
            }
            break;

            default:
            {
                if( ImplIsSupportedGraphic() )
                  aSize = maMetaFile.GetPrefSize();
            }
            break;
        }
    }

    return aSize;
}

void ImpGraphic::ImplSetPrefSize( const Size& rPrefSize )
{
    ensureAvailable();

    switch( meType )
    {
        case GraphicType::NONE:
        case GraphicType::Default:
        break;

        case GraphicType::Bitmap:
        {
            // used when importing a writer FlyFrame with SVG as graphic, added conversion
            // to allow setting the PrefSize at the BitmapEx to hold it
            if(maVectorGraphicData && maBitmapEx.IsEmpty())
            {
                maExPrefSize = rPrefSize;
            }

            // #108077# Push through pref size to animation object,
            // will be lost on copy otherwise
            if( ImplIsAnimated() )
            {
                const_cast< BitmapEx& >(mpAnimation->GetBitmapEx()).SetPrefSize( rPrefSize );
            }

            if (!maExPrefSize.getWidth() || !maExPrefSize.getHeight())
            {
                maBitmapEx.SetPrefSize( rPrefSize );
            }
        }
        break;

        default:
        {
            if( ImplIsSupportedGraphic() )
                maMetaFile.SetPrefSize( rPrefSize );
        }
        break;
    }
}

MapMode ImpGraphic::ImplGetPrefMapMode() const
{
    MapMode aMapMode;

    if (isSwappedOut())
    {
        aMapMode = maSwapInfo.maPrefMapMode;
    }
    else
    {
        switch( meType )
        {
            case GraphicType::NONE:
            case GraphicType::Default:
            break;

            case GraphicType::Bitmap:
            {
                if(maVectorGraphicData && maBitmapEx.IsEmpty())
                {
                    // svg not yet buffered in maBitmapEx, return default PrefMapMode
                    aMapMode = MapMode(MapUnit::Map100thMM);
                }
                else
                {
                    const Size aSize( maBitmapEx.GetPrefSize() );

                    if ( aSize.Width() && aSize.Height() )
                        aMapMode = maBitmapEx.GetPrefMapMode();
                }
            }
            break;

            default:
            {
                if( ImplIsSupportedGraphic() )
                    return maMetaFile.GetPrefMapMode();
            }
            break;
        }
    }

    return aMapMode;
}

void ImpGraphic::ImplSetPrefMapMode( const MapMode& rPrefMapMode )
{
    ensureAvailable();

    switch( meType )
    {
        case GraphicType::NONE:
        case GraphicType::Default:
        break;

        case GraphicType::Bitmap:
        {
            if(maVectorGraphicData)
            {
                // ignore for Vector Graphic Data. If this is really used (except the grfcache)
                // it can be extended by using maBitmapEx as buffer for getVectorGraphicReplacement()
            }
            else
            {
                // #108077# Push through pref mapmode to animation object,
                // will be lost on copy otherwise
                if( ImplIsAnimated() )
                {
                    const_cast< BitmapEx& >(mpAnimation->GetBitmapEx()).SetPrefMapMode( rPrefMapMode );
                }

                maBitmapEx.SetPrefMapMode( rPrefMapMode );
            }
        }
        break;

        default:
        {
            if( ImplIsSupportedGraphic() )
                maMetaFile.SetPrefMapMode( rPrefMapMode );
        }
        break;
    }
}

sal_uLong ImpGraphic::ImplGetSizeBytes() const
{
    if( mnSizeBytes )
        return mnSizeBytes;

    if (mbPrepared)
        ensureAvailable();

    if( meType == GraphicType::Bitmap )
    {
        if(maVectorGraphicData)
        {
            std::pair<VectorGraphicData::State, size_t> tmp(maVectorGraphicData->getSizeBytes());
            if (VectorGraphicData::State::UNPARSED == tmp.first)
            {
                return tmp.second; // don't cache it until Vector Graphic Data is parsed
            }
            mnSizeBytes = tmp.second;
        }
        else
        {
            mnSizeBytes = mpAnimation ? mpAnimation->GetSizeBytes() : maBitmapEx.GetSizeBytes();
        }
    }
    else if( meType == GraphicType::GdiMetafile )
    {
        mnSizeBytes = maMetaFile.GetSizeBytes();
    }

    return mnSizeBytes;
}

void ImpGraphic::ImplDraw( OutputDevice* pOutDev, const Point& rDestPt ) const
{
    ensureAvailable();
    if( !ImplIsSupportedGraphic() || isSwappedOut() )
        return;

    switch( meType )
    {
        case GraphicType::Default:
        break;

        case GraphicType::Bitmap:
        {
            if(maVectorGraphicData && !maBitmapEx)
            {
                // use maEx as local buffer for rendered svg
                const_cast< ImpGraphic* >(this)->maBitmapEx = getVectorGraphicReplacement();
            }

            if ( mpAnimation )
            {
                mpAnimation->Draw( pOutDev, rDestPt );
            }
            else
            {
                maBitmapEx.Draw( pOutDev, rDestPt );
            }
        }
        break;

        default:
            ImplDraw( pOutDev, rDestPt, maMetaFile.GetPrefSize() );
        break;
    }
}

void ImpGraphic::ImplDraw( OutputDevice* pOutDev,
                           const Point& rDestPt, const Size& rDestSize ) const
{
    ensureAvailable();
    if( !ImplIsSupportedGraphic() || isSwappedOut() )
        return;

    switch( meType )
    {
        case GraphicType::Default:
        break;

        case GraphicType::Bitmap:
        {
            if(maVectorGraphicData && maBitmapEx.IsEmpty())
            {
                // use maEx as local buffer for rendered svg
                const_cast< ImpGraphic* >(this)->maBitmapEx = getVectorGraphicReplacement();
            }

            if( mpAnimation )
            {
                mpAnimation->Draw( pOutDev, rDestPt, rDestSize );
            }
            else
            {
                maBitmapEx.Draw( pOutDev, rDestPt, rDestSize );
            }
        }
        break;

        default:
        {
            const_cast<ImpGraphic*>(this)->maMetaFile.WindStart();
            const_cast<ImpGraphic*>(this)->maMetaFile.Play( pOutDev, rDestPt, rDestSize );
            const_cast<ImpGraphic*>(this)->maMetaFile.WindStart();
        }
        break;
    }
}

void ImpGraphic::ImplStartAnimation( OutputDevice* pOutDev, const Point& rDestPt,
                                     const Size& rDestSize, long nExtraData,
                                     OutputDevice* pFirstFrameOutDev )
{
    ensureAvailable();

    if( ImplIsSupportedGraphic() && !isSwappedOut() && mpAnimation )
        mpAnimation->Start( pOutDev, rDestPt, rDestSize, nExtraData, pFirstFrameOutDev );
}

void ImpGraphic::ImplStopAnimation( OutputDevice* pOutDev, long nExtraData )
{
    ensureAvailable();

    if( ImplIsSupportedGraphic() && !isSwappedOut() && mpAnimation )
        mpAnimation->Stop( pOutDev, nExtraData );
}

void ImpGraphic::ImplSetAnimationNotifyHdl( const Link<Animation*,void>& rLink )
{
    ensureAvailable();

    if( mpAnimation )
        mpAnimation->SetNotifyHdl( rLink );
}

Link<Animation*,void> ImpGraphic::ImplGetAnimationNotifyHdl() const
{
    Link<Animation*,void> aLink;

    ensureAvailable();

    if( mpAnimation )
        aLink = mpAnimation->GetNotifyHdl();

    return aLink;
}

sal_uInt32 ImpGraphic::ImplGetAnimationLoopCount() const
{
    if (mbSwapOut)
        return maSwapInfo.mnAnimationLoopCount;

    return mpAnimation ? mpAnimation->GetLoopCount() : 0;
}

void ImpGraphic::ImplSetContext( const std::shared_ptr<GraphicReader>& pReader )
{
    mpContext = pReader;
    mbDummyContext = false;
}

bool ImpGraphic::ImplReadEmbedded( SvStream& rIStm )
{
    ensureAvailable();

    MapMode         aMapMode;
    Size            aSize;
    sal_uInt32      nId;
    sal_Int32       nType;
    const SvStreamEndian nOldFormat = rIStm.GetEndian();
    bool            bRet = false;

    rIStm.SetEndian( SvStreamEndian::LITTLE );
    rIStm.ReadUInt32( nId );

    // check version
    if( GRAPHIC_FORMAT_50 == nId )
    {
        // read new style header
        VersionCompat aCompat( rIStm, StreamMode::READ );

        rIStm.ReadInt32( nType );
        sal_Int32 nLen;
        rIStm.ReadInt32( nLen );
        TypeSerializer aSerializer(rIStm);
        aSerializer.readSize(aSize);
        ReadMapMode( rIStm, aMapMode );
    }
    else
    {
        // read old style header
        sal_Int32 nWidth, nHeight;
        sal_Int32 nMapMode, nScaleNumX, nScaleDenomX;
        sal_Int32 nScaleNumY, nScaleDenomY, nOffsX, nOffsY;

        rIStm.SeekRel( -4 );

        sal_Int32 nLen;
        rIStm.ReadInt32( nType ).ReadInt32( nLen ).ReadInt32( nWidth ).ReadInt32( nHeight );
        rIStm.ReadInt32( nMapMode ).ReadInt32( nScaleNumX ).ReadInt32( nScaleDenomX ).ReadInt32( nScaleNumY );
        rIStm.ReadInt32( nScaleDenomY ).ReadInt32( nOffsX ).ReadInt32( nOffsY );

        // swapped
        if( nType > 100 )
        {
            nType = OSL_SWAPDWORD( nType );
            nWidth = OSL_SWAPDWORD( nWidth );
            nHeight = OSL_SWAPDWORD( nHeight );
            nMapMode = OSL_SWAPDWORD( nMapMode );
            nScaleNumX = OSL_SWAPDWORD( nScaleNumX );
            nScaleDenomX = OSL_SWAPDWORD( nScaleDenomX );
            nScaleNumY = OSL_SWAPDWORD( nScaleNumY );
            nScaleDenomY = OSL_SWAPDWORD( nScaleDenomY );
            nOffsX = OSL_SWAPDWORD( nOffsX );
            nOffsY = OSL_SWAPDWORD( nOffsY );
        }

        aSize = Size( nWidth, nHeight );
        aMapMode = MapMode( static_cast<MapUnit>(nMapMode), Point( nOffsX, nOffsY ),
                            Fraction( nScaleNumX, nScaleDenomX ),
                            Fraction( nScaleNumY, nScaleDenomY ) );
    }

    meType = static_cast<GraphicType>(nType);

    if( meType != GraphicType::NONE )
    {
        if( meType == GraphicType::Bitmap )
        {
            if(maVectorGraphicData && maBitmapEx.IsEmpty())
            {
                // use maBitmapEx as local buffer for rendered svg
                maBitmapEx = getVectorGraphicReplacement();
            }

            maBitmapEx.SetSizePixel(aSize);

            if( aMapMode != MapMode() )
            {
                maBitmapEx.SetPrefMapMode( aMapMode );
                maBitmapEx.SetPrefSize( aSize );
            }
        }
        else
        {
            maMetaFile.SetPrefMapMode( aMapMode );
            maMetaFile.SetPrefSize( aSize );
        }

        if( meType == GraphicType::Bitmap || meType == GraphicType::GdiMetafile )
        {
            ReadImpGraphic( rIStm, *this );
            bRet = rIStm.GetError() == ERRCODE_NONE;
        }
        else if( sal::static_int_cast<sal_uLong>(meType) >= SYS_WINMETAFILE
                 && sal::static_int_cast<sal_uLong>(meType) <= SYS_MACMETAFILE )
        {
            Graphic           aSysGraphic;
            ConvertDataFormat nCvtType;

            switch( sal::static_int_cast<sal_uLong>(meType) )
            {
                case SYS_WINMETAFILE:
                case SYS_WNTMETAFILE: nCvtType = ConvertDataFormat::WMF; break;
                case SYS_OS2METAFILE: nCvtType = ConvertDataFormat::MET; break;
                case SYS_MACMETAFILE: nCvtType = ConvertDataFormat::PCT; break;

                default:
                    nCvtType = ConvertDataFormat::Unknown;
                break;
            }

            if( nType && GraphicConverter::Import( rIStm, aSysGraphic, nCvtType ) == ERRCODE_NONE )
            {
                *this = ImpGraphic( aSysGraphic.GetGDIMetaFile() );
                bRet = rIStm.GetError() == ERRCODE_NONE;
            }
            else
                meType = GraphicType::Default;
        }

        if( bRet )
        {
            ImplSetPrefMapMode( aMapMode );
            ImplSetPrefSize( aSize );
        }
    }
    else
        bRet = true;

    rIStm.SetEndian( nOldFormat );

    return bRet;
}

bool ImpGraphic::ImplWriteEmbedded( SvStream& rOStm )
{
    ensureAvailable();

    if( ( meType == GraphicType::NONE ) || ( meType == GraphicType::Default ) || isSwappedOut() )
        return false;

    const MapMode   aMapMode( ImplGetPrefMapMode() );
    const Size      aSize( ImplGetPrefSize() );
    const SvStreamEndian nOldFormat = rOStm.GetEndian();
    sal_uLong           nDataFieldPos;

    rOStm.SetEndian( SvStreamEndian::LITTLE );

    // write correct version ( old style/new style header )
    if( rOStm.GetVersion() >= SOFFICE_FILEFORMAT_50 )
    {
        // write ID for new format (5.0)
        rOStm.WriteUInt32( GRAPHIC_FORMAT_50 );

        // write new style header
        VersionCompat aCompat( rOStm, StreamMode::WRITE, 1 );

        rOStm.WriteInt32( static_cast<sal_Int32>(meType) );

        // data size is updated later
        nDataFieldPos = rOStm.Tell();
        rOStm.WriteInt32( 0 );

        TypeSerializer aSerializer(rOStm);
        aSerializer.writeSize(aSize);

        WriteMapMode( rOStm, aMapMode );
    }
    else
    {
        // write old style (<=4.0) header
        rOStm.WriteInt32( static_cast<sal_Int32>(meType) );

        // data size is updated later
        nDataFieldPos = rOStm.Tell();
        rOStm.WriteInt32( 0 );
        rOStm.WriteInt32( aSize.Width() );
        rOStm.WriteInt32( aSize.Height() );
        rOStm.WriteInt32( static_cast<sal_uInt16>(aMapMode.GetMapUnit()) );
        rOStm.WriteInt32( aMapMode.GetScaleX().GetNumerator() );
        rOStm.WriteInt32( aMapMode.GetScaleX().GetDenominator() );
        rOStm.WriteInt32( aMapMode.GetScaleY().GetNumerator() );
        rOStm.WriteInt32( aMapMode.GetScaleY().GetDenominator() );
        rOStm.WriteInt32( aMapMode.GetOrigin().X() );
        rOStm.WriteInt32( aMapMode.GetOrigin().Y() );
    }

    bool bRet = false;
    // write data block
    if( !rOStm.GetError() )
    {
        const sal_uLong nDataStart = rOStm.Tell();

        if( ImplIsSupportedGraphic() )
            WriteImpGraphic( rOStm, *this );

        if( !rOStm.GetError() )
        {
            const sal_uLong nStmPos2 = rOStm.Tell();
            rOStm.Seek( nDataFieldPos );
            rOStm.WriteInt32( nStmPos2 - nDataStart );
            rOStm.Seek( nStmPos2 );
            bRet = true;
        }
    }

    rOStm.SetEndian( nOldFormat );

    return bRet;
}

bool ImpGraphic::swapOut()
{
    if (isSwappedOut())
        return false;

    // Create a temp filename for the swap file
    utl::TempFile aTempFile;
    const INetURLObject aTempFileURL(aTempFile.GetURL());

    // Create a swap file
    std::shared_ptr<ImpSwapFile> pSwapFile(new ImpSwapFile(aTempFileURL, getOriginURL()), o3tl::default_delete<ImpSwapFile>());

    bool bResult = false;

    // Open a stream to write the swap file to
    {
        std::unique_ptr<SvStream> xOutputStream = pSwapFile->openOutputStream();

        if (!xOutputStream)
            return false;

        // Write to stream
        xOutputStream->SetVersion(SOFFICE_FILEFORMAT_50);
        xOutputStream->SetCompressMode(SvStreamCompressFlags::NATIVE);
        xOutputStream->SetBufferSize(GRAPHIC_STREAMBUFSIZE);

        if (!xOutputStream->GetError() && ImplWriteEmbedded(*xOutputStream))
        {
            xOutputStream->Flush();
            bResult = !xOutputStream->GetError();
        }
    }

    // Check if writing was successful
    if (bResult)
    {
        // We have swapped out, so can clean memory and prepare swap info
        createSwapInfo();
        ImplClearGraphics();

        mpSwapFile = std::move(pSwapFile);
        mbSwapOut = true;

        // Signal to manager that we have swapped out
        vcl::graphic::Manager::get().swappedOut(this);
    }

    return bResult;
}

bool ImpGraphic::ensureAvailable() const
{
    auto pThis = const_cast<ImpGraphic*>(this);

    if (isSwappedOut())
        return pThis->swapIn();

    pThis->maLastUsed = std::chrono::high_resolution_clock::now();
    return true;
}

bool ImpGraphic::loadPrepared()
{
    Graphic aGraphic;
    if (!mpGfxLink->LoadNative(aGraphic))
        return false;

    GraphicExternalLink aLink = maGraphicExternalLink;

    Size aPrefSize = maSwapInfo.maPrefSize;
    MapMode aPrefMapMode = maSwapInfo.maPrefMapMode;
    *this = *aGraphic.ImplGetImpGraphic();
    if (aPrefSize.getWidth() && aPrefSize.getHeight() && aPrefMapMode == ImplGetPrefMapMode())
    {
        // Use custom preferred size if it was set when the graphic was still unloaded.
        // Only set the size in case the unloaded and loaded unit matches.
        ImplSetPrefSize(aPrefSize);
    }

    maGraphicExternalLink = aLink;

    return true;
}

bool ImpGraphic::swapIn()
{
    bool bRet = false;

    if (!isSwappedOut())
        return bRet;

    if (mbPrepared)
    {
        bRet = loadPrepared();
    }
    else
    {
        OUString aSwapURL;

        if( mpSwapFile )
            aSwapURL = mpSwapFile->getSwapURL().GetMainURL( INetURLObject::DecodeMechanism::NONE );

        if( !aSwapURL.isEmpty() )
        {
            std::unique_ptr<SvStream> xIStm;
            try
            {
                xIStm = ::utl::UcbStreamHelper::CreateStream( aSwapURL, StreamMode::READWRITE | StreamMode::SHARE_DENYWRITE );
            }
            catch( const css::uno::Exception& )
            {
            }

            if( xIStm )
            {
                xIStm->SetVersion( SOFFICE_FILEFORMAT_50 );
                xIStm->SetCompressMode( SvStreamCompressFlags::NATIVE );

                bRet = swapInFromStream(xIStm.get());
                xIStm.reset();
                if (mpSwapFile)
                    setOriginURL(mpSwapFile->getOriginURL());
                mpSwapFile.reset();
            }
        }
    }

    if (bRet)
        vcl::graphic::Manager::get().swappedIn(this);

    return bRet;
}

bool ImpGraphic::swapInFromStream(SvStream* xIStm)
{
    bool bRet = false;

    if( !xIStm )
        return false;

    xIStm->SetBufferSize( GRAPHIC_STREAMBUFSIZE );

    if( xIStm->GetError() )
        return false;

    //keep the swap file alive, because its quite possibly the backing storage
    //for xIStm
    std::shared_ptr<ImpSwapFile> xSwapFile(std::move(mpSwapFile));
    assert(!mpSwapFile);

    std::shared_ptr<GraphicReader> xContext(std::move(mpContext));
    assert(!mpContext);

    bool bDummyContext = mbDummyContext;
    mbDummyContext = false;

    bRet = ImplReadEmbedded( *xIStm );

    //restore ownership of the swap file and context
    mpSwapFile = std::move(xSwapFile);
    mpContext = std::move(xContext);
    mbDummyContext = bDummyContext;

    if (!bRet)
    {
        //throw away swapfile, etc.
        ImplClear();
    }

    mbSwapOut = false;

    return bRet;
}

void ImpGraphic::ImplSetLink(const std::shared_ptr<GfxLink>& rGfxLink)
{
    ensureAvailable();

    mpGfxLink = rGfxLink;
}

std::shared_ptr<GfxLink> ImpGraphic::ImplGetSharedGfxLink() const
{
    return mpGfxLink;
}

GfxLink ImpGraphic::ImplGetLink()
{
    ensureAvailable();

    return( mpGfxLink ? *mpGfxLink : GfxLink() );
}

bool ImpGraphic::ImplIsLink() const
{
    return ( bool(mpGfxLink) );
}

BitmapChecksum ImpGraphic::ImplGetChecksum() const
{
    if (mnChecksum != 0)
        return mnChecksum;

    BitmapChecksum nRet = 0;

    ensureAvailable();

    if( ImplIsSupportedGraphic() && !isSwappedOut() )
    {
        switch( meType )
        {
            case GraphicType::Default:
            break;

            case GraphicType::Bitmap:
            {
                if(maVectorGraphicData)
                    nRet = maVectorGraphicData->GetChecksum();
                else if( mpAnimation )
                    nRet = mpAnimation->GetChecksum();
                else
                    nRet = maBitmapEx.GetChecksum();
            }
            break;

            default:
                nRet = maMetaFile.GetChecksum();
            break;
        }
    }

    mnChecksum = nRet;
    return nRet;
}

bool ImpGraphic::ImplExportNative( SvStream& rOStm ) const
{
    ensureAvailable();

    if( rOStm.GetError() )
        return false;

    bool bResult = false;

    if( !isSwappedOut() )
    {
        if( mpGfxLink && mpGfxLink->IsNative() )
            bResult = mpGfxLink->ExportNative( rOStm );
        else
        {
            WriteImpGraphic( rOStm, *this );
            bResult = ( rOStm.GetError() == ERRCODE_NONE );
        }
    }
    else
         rOStm.SetError( SVSTREAM_GENERALERROR );

    return bResult;
}

sal_Int32 ImpGraphic::getPageNumber() const
{
    if (maVectorGraphicData)
        return maVectorGraphicData->getPageIndex();
    return -1;
}

void ReadImpGraphic( SvStream& rIStm, ImpGraphic& rImpGraphic )
{
    if (rIStm.GetError())
        return;

    const sal_uLong nStmPos1 = rIStm.Tell();
    sal_uInt32 nTmp;

    rImpGraphic.ImplClear();

    // read Id
    rIStm.ReadUInt32( nTmp );

    // if there is no more data, avoid further expensive
    // reading which will create VDevs and other stuff, just to
    // read nothing. CAUTION: Eof is only true AFTER reading another
    // byte, a speciality of SvMemoryStream (!)
    if (!rIStm.good())
        return;

    if (NATIVE_FORMAT_50 == nTmp)
    {
        Graphic         aGraphic;
        GfxLink         aLink;

        // read compat info, destructor writes stuff into the header
        {
            VersionCompat aCompat( rIStm, StreamMode::READ );
        }

        TypeSerializer aSerializer(rIStm);
        aSerializer.readGfxLink(aLink);

        // set dummy link to avoid creation of additional link after filtering;
        // we set a default link to avoid unnecessary swapping of native data
        aGraphic.SetGfxLink(std::make_shared<GfxLink>());

        if( !rIStm.GetError() && aLink.LoadNative( aGraphic ) )
        {
            // set link only, if no other link was set
            const bool bSetLink = !rImpGraphic.mpGfxLink;

            // assign graphic
            rImpGraphic = *aGraphic.ImplGetImpGraphic();

            if( aLink.IsPrefMapModeValid() )
                rImpGraphic.ImplSetPrefMapMode( aLink.GetPrefMapMode() );

            if( aLink.IsPrefSizeValid() )
                rImpGraphic.ImplSetPrefSize( aLink.GetPrefSize() );

            if( bSetLink )
                rImpGraphic.ImplSetLink(std::make_shared<GfxLink>(aLink));
        }
        else
        {
            rIStm.Seek( nStmPos1 );
            rIStm.SetError( ERRCODE_IO_WRONGFORMAT );
        }
        return;
    }

    BitmapEx        aBmpEx;
    const SvStreamEndian nOldFormat = rIStm.GetEndian();

    rIStm.SeekRel( -4 );
    rIStm.SetEndian( SvStreamEndian::LITTLE );
    ReadDIBBitmapEx(aBmpEx, rIStm);

    if( !rIStm.GetError() )
    {
        sal_uInt32  nMagic1(0), nMagic2(0);
        sal_uLong   nActPos = rIStm.Tell();

        rIStm.ReadUInt32( nMagic1 ).ReadUInt32( nMagic2 );
        rIStm.Seek( nActPos );

        rImpGraphic = ImpGraphic( aBmpEx );

        if( !rIStm.GetError() && ( 0x5344414e == nMagic1 ) && ( 0x494d4931 == nMagic2 ) )
        {
            rImpGraphic.mpAnimation = std::make_unique<Animation>();
            ReadAnimation( rIStm, *rImpGraphic.mpAnimation );

            // #108077# manually set loaded BmpEx to Animation
            // (which skips loading its BmpEx if already done)
            rImpGraphic.mpAnimation->SetBitmapEx(aBmpEx);
        }
        else
            rIStm.ResetError();
    }
    else
    {
        GDIMetaFile aMtf;

        rIStm.Seek( nStmPos1 );
        rIStm.ResetError();
        ReadGDIMetaFile( rIStm, aMtf );

        if( !rIStm.GetError() )
        {
            rImpGraphic = aMtf;
        }
        else
        {
            ErrCode nOrigError = rIStm.GetErrorCode();
            // try to stream in Svg defining data (length, byte array and evtl. path)
            // See below (operator<<) for more information
            sal_uInt32 nMagic;
            rIStm.Seek(nStmPos1);
            rIStm.ResetError();
            rIStm.ReadUInt32( nMagic );

            if (constSvgMagic == nMagic || constWmfMagic == nMagic || constEmfMagic == nMagic || constPdfMagic == nMagic)
            {
                sal_uInt32 nVectorGraphicDataArrayLength(0);
                rIStm.ReadUInt32(nVectorGraphicDataArrayLength);

                if (nVectorGraphicDataArrayLength)
                {
                    VectorGraphicDataArray aNewData(nVectorGraphicDataArrayLength);

                    rIStm.ReadBytes(aNewData.getArray(), nVectorGraphicDataArrayLength);
                    OUString aPath = rIStm.ReadUniOrByteString(rIStm.GetStreamCharSet());

                    if (!rIStm.GetError())
                    {
                        VectorGraphicDataType aDataType(VectorGraphicDataType::Svg);

                        if (constWmfMagic == nMagic)
                        {
                            aDataType = VectorGraphicDataType::Wmf;
                        }
                        else if (constEmfMagic == nMagic)
                        {
                            aDataType = VectorGraphicDataType::Emf;
                        }
                        else if (constPdfMagic == nMagic)
                        {
                            aDataType = VectorGraphicDataType::Pdf;
                        }

                        auto aVectorGraphicDataPtr = std::make_shared<VectorGraphicData>(aNewData, aPath, aDataType);
                        rImpGraphic = aVectorGraphicDataPtr;
                    }
                }
            }
            else
            {
                rIStm.SetError(nOrigError);
            }

            rIStm.Seek(nStmPos1);
        }
    }

    rIStm.SetEndian( nOldFormat );
}

void WriteImpGraphic(SvStream& rOStm, const ImpGraphic& rImpGraphic)
{
    if (rOStm.GetError())
        return;

    rImpGraphic.ensureAvailable();

    if (rImpGraphic.isSwappedOut())
    {
        rOStm.SetError( SVSTREAM_GENERALERROR );
        return;
    }

    if( ( rOStm.GetVersion() >= SOFFICE_FILEFORMAT_50 ) &&
        ( rOStm.GetCompressMode() & SvStreamCompressFlags::NATIVE ) &&
        rImpGraphic.mpGfxLink && rImpGraphic.mpGfxLink->IsNative())
    {
        // native format
        rOStm.WriteUInt32( NATIVE_FORMAT_50 );

        // write compat info, destructor writes stuff into the header
        {
            VersionCompat aCompat( rOStm, StreamMode::WRITE, 1 );
        }
        rImpGraphic.mpGfxLink->SetPrefMapMode( rImpGraphic.ImplGetPrefMapMode() );
        rImpGraphic.mpGfxLink->SetPrefSize( rImpGraphic.ImplGetPrefSize() );
        TypeSerializer aSerializer(rOStm);
        aSerializer.writeGfxLink(*rImpGraphic.mpGfxLink);
    }
    else
    {
        // own format
        const SvStreamEndian nOldFormat = rOStm.GetEndian();
        rOStm.SetEndian( SvStreamEndian::LITTLE );

        switch( rImpGraphic.ImplGetType() )
        {
            case GraphicType::NONE:
            case GraphicType::Default:
            break;

            case GraphicType::Bitmap:
            {
                if(rImpGraphic.getVectorGraphicData())
                {
                    // stream out Vector Graphic defining data (length, byte array and evtl. path)
                    // this is used e.g. in swapping out graphic data and in transporting it over UNO API
                    // as sequence of bytes, but AFAIK not written anywhere to any kind of file, so it should be
                    // no problem to extend it; only used at runtime
                    switch (rImpGraphic.getVectorGraphicData()->getVectorGraphicDataType())
                    {
                        case VectorGraphicDataType::Wmf:
                        {
                            rOStm.WriteUInt32(constWmfMagic);
                            break;
                        }
                        case VectorGraphicDataType::Emf:
                        {
                            rOStm.WriteUInt32(constEmfMagic);
                            break;
                        }
                        case VectorGraphicDataType::Svg:
                        {
                            rOStm.WriteUInt32(constSvgMagic);
                            break;
                        }
                        case VectorGraphicDataType::Pdf:
                        {
                            rOStm.WriteUInt32(constPdfMagic);
                            break;
                        }
                    }

                    rOStm.WriteUInt32( rImpGraphic.getVectorGraphicData()->getVectorGraphicDataArrayLength() );
                    rOStm.WriteBytes(rImpGraphic.getVectorGraphicData()->getVectorGraphicDataArray().getConstArray(),
                        rImpGraphic.getVectorGraphicData()->getVectorGraphicDataArrayLength());
                    rOStm.WriteUniOrByteString(rImpGraphic.getVectorGraphicData()->getPath(),
                                               rOStm.GetStreamCharSet());
                }
                else if( rImpGraphic.ImplIsAnimated())
                {
                    WriteAnimation( rOStm, *rImpGraphic.mpAnimation );
                }
                else
                {
                    WriteDIBBitmapEx(rImpGraphic.maBitmapEx, rOStm);
                }
            }
            break;

            default:
            {
                if( rImpGraphic.ImplIsSupportedGraphic() )
                    WriteGDIMetaFile( rOStm, rImpGraphic.maMetaFile );
            }
            break;
        }

        rOStm.SetEndian( nOldFormat );
    }
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */