Quelle  fly.cxx   Sprache: C

/* -*- 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 <config_wasm_strip.h>

#include <svl/itemiter.hxx>
#include <vcl/imap.hxx>
#include <tools/helpers.hxx>
#include <editeng/protitem.hxx>
#include <editeng/opaqitem.hxx>
#include <editeng/ulspitem.hxx>
#include <editeng/frmdiritem.hxx>
#include <fmtfsize.hxx>
#include <fmtclds.hxx>
#include <fmtcntnt.hxx>
#include <fmturl.hxx>
#include <fmtsrnd.hxx>
#include <fmtornt.hxx>
#include <fmtcnct.hxx>
#include <ndgrf.hxx>
#include <tolayoutanchoredobjectposition.hxx>
#include <fmtfollowtextflow.hxx>
#include <sortedobjs.hxx>
#include <objectformatter.hxx>
#include <ndole.hxx>
#include <swtable.hxx>
#include <svx/svdoashp.hxx>
#include <svx/svdpage.hxx>
#include <layouter.hxx>
#include <layact.hxx>
#include <pagefrm.hxx>
#include <rootfrm.hxx>
#include <viewimp.hxx>
#include <viewopt.hxx>
#include <dcontact.hxx>
#include <dflyobj.hxx>
#include <dview.hxx>
#include <frmatr.hxx>
#include <frmtool.hxx>
#include <hints.hxx>
#include <tabfrm.hxx>
#include <txtfrm.hxx>
#include <notxtfrm.hxx>
#include <flyfrms.hxx>
#include <sectfrm.hxx>
#include <vcl/svapp.hxx>
#include <calbck.hxx>
#include <IDocumentDrawModelAccess.hxx>
#include <IDocumentSettingAccess.hxx>
#include <IDocumentLayoutAccess.hxx>
#include <textboxhelper.hxx>
#include <txtfly.hxx>
#include <ndindex.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <osl/diagnose.h>
#include <o3tl/string_view.hxx>
#include <rtl/math.hxx>

#include <wrtsh.hxx>
#include <view.hxx>
#include <edtwin.hxx>
#include <bodyfrm.hxx>
#include <FrameControlsManager.hxx>
#include <ndtxt.hxx>
#include <formatflysplit.hxx>

using namespace ::com::sun::star;

namespace
{
/// Gets the bottom position which is a deadline for a split fly.
SwTwips GetFlyAnchorBottom(SwFlyFrame* pFly, const SwFrame& rAnchor)
{
    SwRectFnSet aRectFnSet(pFly);

    const SwPageFrame* pPage = rAnchor.FindPageFrame();
    if (!pPage)
    {
        return 0;
    }

    const SwFrame* pBody = pPage->FindBodyCont();
    if (!pBody)
    {
        return 0;
    }

    const auto* pFrameFormat = pFly->GetFrameFormat();
    const IDocumentSettingAccess& rIDSA = pFrameFormat->getIDocumentSettingAccess();
    // Allow overlap with bottom margin / footer only in case we're relative to the page frame.
    bool bVertPageFrame = pFrameFormat->GetVertOrient().GetRelationOrient() == text::RelOrientation::PAGE_FRAME;
    bool bInBody = rAnchor.IsInDocBody();
    bool bLegacy = rIDSA.get(DocumentSettingId::TAB_OVER_MARGIN) && (bVertPageFrame || !bInBody);
    if (bLegacy)
    {
        // Word <= 2010 style: the fly can overlap with the bottom margin / footer area in case the
        // fly height fits the body height and the fly bottom fits the page.
        // See if the fly height would fit at least the page height, ignoring the vertical offset.
        SwTwips nFlyHeight = aRectFnSet.GetHeight(pFly->getFrameArea());
        SwTwips nPageHeight = aRectFnSet.GetHeight(pPage->getFramePrintArea());
        SwTwips nFlyTop = aRectFnSet.GetTop(pFly->getFrameArea());
        SwTwips nBodyTop = aRectFnSet.GetTop(pBody->getFrameArea());
        if (nFlyTop < nBodyTop)
        {
            // Fly frame overlaps with the top margin area, ignore that part of the fly frame for
            // top/height purposes.
            nFlyHeight -= nBodyTop - nFlyTop;
            nFlyTop = nBodyTop;
        }
        if (nFlyHeight <= nPageHeight)
        {
            // Yes, it would fit: allow overlap if there is no problematic vertical offset.
            SwTwips nDeadline = aRectFnSet.GetBottom(pPage->getFrameArea());
            SwTwips nBodyHeight = aRectFnSet.GetHeight(pBody->getFramePrintArea());
            if (nDeadline - nFlyTop > nBodyHeight)
            {
                // If the fly would now grow to nDeadline then it would not fit the body height, so
                // limit the height.
                nDeadline = nFlyTop + nBodyHeight;
            }
            return nDeadline;
        }
    }

    // Word >= 2013 style: the fly has to stay inside the body frame.
    return aRectFnSet.GetPrtBottom(*pBody);
}
}

static SwTwips lcl_CalcAutoWidth( const SwLayoutFrame& rFrame );

SwFlyFrame::SwFlyFrame( SwFlyFrameFormat *pFormat, SwFrame* pSib, SwFrame *pAnch, bool bFollow ) :
    SwLayoutFrame( pFormat, pSib ),
     // #i26791#
    m_pPrevLink( nullptr ),
    m_pNextLink( nullptr ),
    m_bInCnt( false ),
    m_bAtCnt( false ),
    m_bLayout( false ),
    m_bAutoPosition( false ),
    m_bDeleted( false ),
    m_nAuthor( std::string::npos ),
    m_bValidContentPos( false )
{
    mnFrameType = SwFrameType::Fly;

    m_bInvalid = m_bNotifyBack = true;
    m_bLocked  = m_bMinHeight =
    m_bHeightClipped = m_bWidthClipped = m_bFormatHeightOnly = false;

    // Size setting: Fixed size is always the width
    const SwFormatFrameSize &rFrameSize = pFormat->GetFrameSize();
    const SvxFrameDirection nDir = pFormat->GetFormatAttr( RES_FRAMEDIR ).GetValue();
    if( SvxFrameDirection::Environment == nDir )
    {
        mbDerivedVert = true;
        mbDerivedR2L = true;
    }
    else
    {
        mbInvalidVert = false;
        mbDerivedVert = false;
        mbDerivedR2L = false;
        if( SvxFrameDirection::Horizontal_LR_TB == nDir || SvxFrameDirection::Horizontal_RL_TB == nDir )
        {
            mbVertLR = false;
            mbVertical = false;
        }
        else
        {
            const SwViewShell *pSh = getRootFrame() ? getRootFrame()->GetCurrShell() : nullptr;
            if( pSh && pSh->GetViewOptions()->getBrowseMode() )
            {
                mbVertLR = false;
                mbVertical = false;
            }
            else
            {
                mbVertical = true;

                if ( SvxFrameDirection::Vertical_LR_TB == nDir )
                    mbVertLR = true;
                else if (nDir == SvxFrameDirection::Vertical_LR_BT)
                {
                    mbVertLR = true;
                    mbVertLRBT = true;
                }
                else
                    mbVertLR = false;
            }
        }

        mbInvalidR2L = false;
        if( SvxFrameDirection::Horizontal_RL_TB == nDir )
            mbRightToLeft = true;
        else
            mbRightToLeft = false;
    }

    {
        SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
        aFrm.Width( rFrameSize.GetWidth() );
        aFrm.Height( rFrameSize.GetHeightSizeType() == SwFrameSize::Variable ? MINFLY : rFrameSize.GetHeight() );
    }

    // Fixed or variable Height?
    if ( rFrameSize.GetHeightSizeType() == SwFrameSize::Minimum )
        m_bMinHeight = true;
    else if ( rFrameSize.GetHeightSizeType() == SwFrameSize::Fixed )
        mbFixSize = true;

    // insert columns, if necessary
    InsertColumns();

    // First the Init, then the Content:
    // This is due to the fact that the Content may have Objects/Frames,
    // which are then registered
    InitDrawObj(*pAnch);

    Chain( pAnch );

    if (!bFollow)
    {
        InsertCnt();
    }

    // Put it somewhere outside so that out document is not formatted unnecessarily often
    SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
    aFrm.Pos().setX(FAR_AWAY);
    aFrm.Pos().setY(FAR_AWAY);
}

void SwFlyFrame::Chain( SwFrame* _pAnch )
{
    // Connect to chain neighbours.
    // No problem, if a neighbor doesn't exist - the construction of the
    // neighbor will make the connection
    const SwFormatChain& rChain = GetFormat()->GetChain();
    if ( !(rChain.GetPrev() || rChain.GetNext()) )
        return;

    if ( rChain.GetNext() )
    {
        SwFlyFrame* pFollow = FindChainNeighbour( *rChain.GetNext(), _pAnch );
        if ( pFollow )
        {
            OSL_ENSURE( !pFollow->GetPrevLink(), "wrong chain detected" );
            if ( !pFollow->GetPrevLink() )
                SwFlyFrame::ChainFrames( *this, *pFollow );
        }
    }
    if ( rChain.GetPrev() )
    {
        SwFlyFrame *pMaster = FindChainNeighbour( *rChain.GetPrev(), _pAnch );
        if ( pMaster )
        {
            OSL_ENSURE( !pMaster->GetNextLink(), "wrong chain detected" );
            if ( !pMaster->GetNextLink() )
                SwFlyFrame::ChainFrames( *pMaster, *this );
        }
    }
}

void SwFlyFrame::InsertCnt()
{
    if ( GetPrevLink() )
        return;

    const SwFormatContent& rContent = GetFormat()->GetContent();
    OSL_ENSURE( rContent.GetContentIdx(), ":-( no content prepared." );
    SwNodeOffset nIndex = rContent.GetContentIdx()->GetIndex();
    // Lower() means SwColumnFrame; the Content then needs to be inserted into the (Column)BodyFrame
    ::InsertCnt_( Lower() ? static_cast<SwLayoutFrame*>(static_cast<SwLayoutFrame*>(Lower())->Lower()) : static_cast<SwLayoutFrame*>(this),
                  GetFormat()->GetDoc(), nIndex );

    // NoText always have a fixed height.
    SwFrame* pLower = Lower();
    if ( pLower && pLower->IsNoTextFrame() )
    {
        mbFixSize = true;
        m_bMinHeight = false;
    }
}

void SwFlyFrame::InsertColumns()
{
    // #i97379#
    // Check, if column are allowed.
    // Columns are not allowed for fly frames, which represent graphics or embedded objects.
    const SwFormatContent& rContent = GetFormat()->GetContent();
    OSL_ENSURE( rContent.GetContentIdx(), " - no content prepared." );
    SwNodeIndex aFirstContent( *(rContent.GetContentIdx()), 1 );
    if ( aFirstContent.GetNode().IsNoTextNode() )
    {
        return;
    }

    const SwFormatCol &rCol = GetFormat()->GetCol();
    if ( rCol.GetNumCols() <= 1 )
        return;

    // Start off PrtArea to be as large as Frame, so that we can put in the columns
    // properly. It'll adjust later on.
    {
        SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
        aPrt.Width( getFrameArea().Width() );
        aPrt.Height( getFrameArea().Height() );
    }

    const SwFormatCol aOld; // ChgColumns() also needs an old value passed
    ChgColumns( aOld, rCol );
}

void SwFlyFrame::DestroyImpl()
{
    // Accessible objects for fly frames will be destroyed in this destructor.
    // For frames bound as char or frames that don't have an anchor we have
    // to do that ourselves. For any other frame the call RemoveFly at the
    // anchor will do that.
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    if( IsAccessibleFrame() && GetFormat() && (IsFlyInContentFrame() || !GetAnchorFrame()) )
    {
        SwRootFrame *pRootFrame = getRootFrame();
        if( pRootFrame && pRootFrame->IsAnyShellAccessible() )
        {
            SwViewShell *pVSh = pRootFrame->GetCurrShell();
            if( pVSh && pVSh->Imp() )
            {
                // Lowers aren't disposed already, so we have to do a recursive
                // dispose
                pVSh->Imp()->DisposeAccessibleFrame( this, true );
            }
        }
    }
#endif

    if( GetFormat() && !GetFormat()->GetDoc().IsInDtor() )
    {
        ClearTmpConsiderWrapInfluence(); // remove this from SwLayouter

        Unchain();

        DeleteCnt();

        if ( GetAnchorFrame() )
            AnchorFrame()->RemoveFly( this );
    }

    FinitDrawObj();

    SwLayoutFrame::DestroyImpl();

    SwWrtShell* pWrtSh = dynamic_cast<SwWrtShell*>(getRootFrame()->GetCurrShell());
    UpdateUnfloatButton(pWrtSh, false);
}

SwFlyFrame::~SwFlyFrame()
{
}

const IDocumentDrawModelAccess& SwFlyFrame::getIDocumentDrawModelAccess()
{
    return GetFormat()->getIDocumentDrawModelAccess();
}

void SwFlyFrame::Unchain()
{
    if ( GetPrevLink() )
        UnchainFrames( *GetPrevLink(), *this );
    if ( GetNextLink() )
        UnchainFrames( *this, *GetNextLink() );
}

void SwFlyFrame::DeleteCnt()
{
    SwFrame* pFrame = m_pLower;
    while ( pFrame )
    {
        while ( pFrame->GetDrawObjs() && pFrame->GetDrawObjs()->size() )
        {
            SwAnchoredObject *pAnchoredObj = (*pFrame->GetDrawObjs())[0];
            if ( auto pFlyFrame = pAnchoredObj->DynCastFlyFrame() )
            {
                SwFrame::DestroyFrame(pFlyFrame);
            }
            else if ( dynamic_cast<const SwAnchoredDrawObject*>( pAnchoredObj) !=  nullptr )
            {
                // consider 'virtual' drawing objects
                SdrObject* pObj = pAnchoredObj->DrawObj();
                if ( auto pDrawVirtObj = dynamic_cast<SwDrawVirtObj*>( pObj) )
                {
                    pDrawVirtObj->RemoveFromWriterLayout();
                    pDrawVirtObj->RemoveFromDrawingPage();
                }
                else
                {
                    SwDrawContact* pContact =
                            static_cast<SwDrawContact*>(::GetUserCall( pObj ));
                    if ( pContact )
                    {
                        pContact->DisconnectFromLayout();
                    }
                }
            }
        }

        pFrame->RemoveFromLayout();
        SwFrame::DestroyFrame(pFrame);
        pFrame = m_pLower;
    }

    InvalidatePage();
}

void SwFlyFrame::InitDrawObj(SwFrame& rAnchorFrame)
{
    SetDrawObj(*SwFlyDrawContact::CreateNewRef(this, GetFormat(), rAnchorFrame));

    // Set the right Layer
    const IDocumentSettingAccess& rIDSA = GetFormat()->getIDocumentSettingAccess();
    bool isPaintHellOverHF = rIDSA.get(DocumentSettingId::PAINT_HELL_OVER_HEADER_FOOTER);
    IDocumentDrawModelAccess& rIDDMA = GetFormat()->getIDocumentDrawModelAccess();
    SdrLayerID nHeavenId = rIDDMA.GetHeavenId();
    SdrLayerID nHellId = rIDDMA.GetHellId();
    bool isOpaque = GetFormat()->GetOpaque().GetValue();
    if (!isOpaque && isPaintHellOverHF)
    {
        if (!rAnchorFrame.FindFooterOrHeader())
            nHellId = rIDDMA.GetHeaderFooterHellId();
    }
    GetVirtDrawObj()->SetLayer( isOpaque ? nHeavenId :nHellId );
}

static SwPosition ResolveFlyAnchor(SwFrameFormat const& rFlyFrame)
{
    SwFormatAnchor const& rAnch(rFlyFrame.GetAnchor());
    if (rAnch.GetAnchorId() == RndStdIds::FLY_AT_PAGE)
    {   // arbitrarily pick last node
        return SwPosition(rFlyFrame.GetDoc().GetNodes().GetEndOfContent(), SwNodeOffset(-1));
    }
    else
    {
        SwPosition const*const pPos(rAnch.GetContentAnchor());
        assert(pPos);
        if (SwFrameFormat const*const pParent = pPos->GetNode().GetFlyFormat())
        {
            return ResolveFlyAnchor(*pParent);
        }
        else if (pPos->GetContentNode())
        {
            return *pPos;
        }
        else
        {
            return SwPosition(*pPos->GetNode().GetContentNode(), 0);
        }
    }
}

void SwFlyFrame::FinitDrawObj()
{
    if(!GetVirtDrawObj() )
        return;
    SwFormat* pFormat = GetFormat();
    // Deregister from SdrPageViews if the Objects is still selected there.
    if(!pFormat->GetDoc().IsInDtor())
    {
        SwViewShell* p1St = getRootFrame()->GetCurrShell();
        if(p1St)
        {
            for(SwViewShell& rCurrentShell : p1St->GetRingContainer())
            {   // At the moment the Drawing can do just do an Unmark on everything,
                // as the Object was already removed
                if (rCurrentShell.HasDrawView() &&
                    rCurrentShell.Imp()->GetDrawView()->GetMarkedObjectList().GetMarkCount())
                {
                    SwFlyFrame const*const pOldSelFly = ::GetFlyFromMarked(nullptr, &rCurrentShell);
                    if (pOldSelFly == this)
                    {
                        assert(rCurrentShell.Imp()->GetDrawView()->GetMarkedObjectList().GetMarkCount() == 1);
                        if (SwFEShell *const pFEShell = dynamic_cast<SwFEShell*>(&rCurrentShell))
                        {   // tdf#131679 move any cursor out of fly
                            rCurrentShell.Imp()->GetDrawView()->UnmarkAll();
                            SwPaM const temp(ResolveFlyAnchor(*pOldSelFly->GetFormat()));
                            pFEShell->SetSelection(temp);
                            // could also call SetCursor() like SwFEShell::SelectObj()
                            // does, but that would access layout a bit much...
                        }
                        else
                        {
                            rCurrentShell.Imp()->GetDrawView()->UnmarkAll();
                        }
                    }
                }
            }
        }
    }

    SwVirtFlyDrawObj* pVirtDrawObj = GetVirtDrawObj();
    // Else calls delete of the ContactObj
    pVirtDrawObj->SetUserCall(nullptr);

    if ( pVirtDrawObj->getSdrPageFromSdrObject() )
        pVirtDrawObj->getSdrPageFromSdrObject()->RemoveObject( pVirtDrawObj->GetOrdNum() );
    ClearDrawObj();
}

void SwFlyFrame::ChainFrames( SwFlyFrame &rMaster, SwFlyFrame &rFollow )
{
    OSL_ENSURE( !rMaster.GetNextLink(), "link can not be changed" );
    OSL_ENSURE( !rFollow.GetPrevLink(), "link can not be changed" );

    rMaster.m_pNextLink = &rFollow;
    rFollow.m_pPrevLink = &rMaster;

    if ( rMaster.ContainsContent() )
    {
        // To get a text flow we need to invalidate
        SwFrame *pInva = rMaster.FindLastLower();
        SwRectFnSet aRectFnSet(&rMaster);
        const tools::Long nBottom = aRectFnSet.GetPrtBottom(rMaster);
        while ( pInva )
        {
            if( aRectFnSet.BottomDist( pInva->getFrameArea(), nBottom ) <= 0 )
            {
                pInva->InvalidateSize();
                pInva->Prepare();
                pInva = pInva->FindPrev();
            }
            else
                pInva = nullptr;
        }
    }

    if ( rFollow.ContainsContent() )
    {
        // There's only the content from the Masters left; the content from the Follow
        // does not have any Frames left (should always be exactly one empty TextNode).
        SwFrame *pFrame = rFollow.ContainsContent();
        OSL_ENSURE( !pFrame->IsTabFrame() && !pFrame->FindNext(), "follow in chain contains content" );
        pFrame->Cut();
        SwFrame::DestroyFrame(pFrame);
    }

    // invalidate accessible relation set (accessibility wrapper)
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    SwViewShell* pSh = rMaster.getRootFrame()->GetCurrShell();
    if( pSh )
    {
        SwRootFrame* pLayout = rMaster.getRootFrame();
        if( pLayout && pLayout->IsAnyShellAccessible() )
            pSh->Imp()->InvalidateAccessibleRelationSet(rMaster, rFollow);
    }
#endif
}

void SwFlyFrame::UnchainFrames( SwFlyFrame &rMaster, SwFlyFrame &rFollow )
{
    rMaster.m_pNextLink = nullptr;
    rFollow.m_pPrevLink = nullptr;

    if ( rFollow.ContainsContent() )
    {
        // The Master sucks up the content of the Follow
        SwLayoutFrame *pUpper = &rMaster;
        SwFrame* pLower = pUpper->Lower();
        if ( pLower && pLower->IsColumnFrame() )
        {
            pUpper = static_cast<SwLayoutFrame*>(pUpper->GetLastLower());
            pUpper = static_cast<SwLayoutFrame*>(pUpper->Lower()); // The (Column)BodyFrame
            OSL_ENSURE( pUpper && pUpper->IsColBodyFrame(), "Missing ColumnBody" );
        }
        SwFlyFrame *pFoll = &rFollow;
        while ( pFoll )
        {
            SwFrame *pTmp = ::SaveContent( pFoll );
            if ( pTmp )
                ::RestoreContent( pTmp, pUpper, rMaster.FindLastLower() );
            pFoll->SetCompletePaint();
            pFoll->InvalidateSize();
            pFoll = pFoll->GetNextLink();
        }
    }

    // The Follow needs his own content to be served
    const SwFormatContent &rContent = rFollow.GetFormat()->GetContent();
    OSL_ENSURE( rContent.GetContentIdx(), ":-( No content prepared." );
    SwNodeOffset nIndex = rContent.GetContentIdx()->GetIndex();
    // Lower() means SwColumnFrame: this one contains another SwBodyFrame
    SwFrame* pLower = rFollow.Lower();
    ::InsertCnt_( pLower ? const_cast<SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(pLower)->Lower()))
                                   : static_cast<SwLayoutFrame*>(&rFollow),
                  rFollow.GetFormat()->GetDoc(), ++nIndex );

    // invalidate accessible relation set (accessibility wrapper)
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    SwViewShell* pSh = rMaster.getRootFrame()->GetCurrShell();
    if( pSh )
    {
        SwRootFrame* pLayout = rMaster.getRootFrame();
        if( pLayout && pLayout->IsAnyShellAccessible() )
            pSh->Imp()->InvalidateAccessibleRelationSet(rMaster, rFollow);
    }
#endif
}

SwFlyFrame *SwFlyFrame::FindChainNeighbour( SwFrameFormat const &rChain, SwFrame *pAnch )
{
    // We look for the Fly that's in the same Area.
    // Areas can for now only be Head/Footer or Flys.

    if ( !pAnch ) // If an Anchor was passed along, that one counts (ctor!)
        pAnch = AnchorFrame();

    SwLayoutFrame *pLay;
    if ( pAnch->IsInFly() )
        pLay = pAnch->FindFlyFrame();
    else
    {
        // FindFooterOrHeader is not appropriate here, as we may not have a
        // connection to the Anchor yet.
        pLay = pAnch->GetUpper();
        while ( pLay && !(pLay->GetType() & (SwFrameType::Header|SwFrameType::Footer)) )
            pLay = pLay->GetUpper();
    }

    SwIterator<SwFlyFrame,SwFormat> aIter( rChain );
    SwFlyFrame *pFly = aIter.First();
    if ( pLay )
    {
        while ( pFly )
        {
            if ( pFly->GetAnchorFrame() )
            {
                if ( pFly->GetAnchorFrame()->IsInFly() )
                {
                    if ( pFly->AnchorFrame()->FindFlyFrame() == pLay )
                        break;
                }
                else if ( pLay == pFly->FindFooterOrHeader() )
                    break;
            }
            pFly = aIter.Next();
        }
    }
    else if ( pFly )
    {
        OSL_ENSURE( !aIter.Next(), "chain with more than one instance" );
    }
    return pFly;
}

bool SwFlyFrame::IsFlySplitAllowed() const
{
    if (!IsFlyAtContentFrame())
    {
        return false;
    }

    const IDocumentSettingAccess& rIDSA = GetFormat()->getIDocumentSettingAccess();
    if (rIDSA.get(DocumentSettingId::DO_NOT_BREAK_WRAPPED_TABLES))
    {
        return false;
    }

    if (FindFooterOrHeader())
    {
        // Adding a new page would not increase the header/footer area.
        return false;
    }

    const SwFrame* pFlyAnchor = GetAnchorFrame();
    if (pFlyAnchor && pFlyAnchor->FindColFrame())
    {
        // No split in multi-column sections, so GetFlyAnchorBottom() can assume that our innermost
        // body frame and the page's body frame is the same.
        // This is also consistent with the Word behavior.
        return false;
    }

    if (pFlyAnchor && pFlyAnchor->IsInFootnote())
    {
        // No split in footnotes.
        return false;
    }

    const SwFlyFrameFormat* pFormat = GetFormat();
    const SwFormatVertOrient& rVertOrient = pFormat->GetVertOrient();
    if (rVertOrient.GetVertOrient() == text::VertOrientation::BOTTOM)
    {
        // We have to grow from bottom to top, and the fly split code assumes that we grow from top
        // to bottom, so don't split for now.
        if (rVertOrient.GetRelationOrient() == text::RelOrientation::PAGE_PRINT_AREA)
        {
            // Growing from the bottom of the body frame.
            return false;
        }
    }

    return pFormat->GetFlySplit().GetValue();
}

SwFrame *SwFlyFrame::FindLastLower()
{
    SwFrame *pRet = ContainsAny();
    if ( pRet && pRet->IsInTab() )
        pRet = pRet->FindTabFrame();
    SwFrame *pNxt = pRet;
    while ( pNxt && IsAnLower( pNxt ) )
    {   pRet = pNxt;
        pNxt = pNxt->FindNext();
    }
    return pRet;
}

bool SwFlyFrame::FrameSizeChg( const SwFormatFrameSize &rFrameSize )
{
    bool bRet = false;
    SwTwips nDiffHeight = getFrameArea().Height();
    if ( rFrameSize.GetHeightSizeType() == SwFrameSize::Variable )
        mbFixSize = m_bMinHeight = false;
    else
    {
        if ( rFrameSize.GetHeightSizeType() == SwFrameSize::Fixed )
        {
            mbFixSize = true;
            m_bMinHeight = false;
        }
        else if ( rFrameSize.GetHeightSizeType() == SwFrameSize::Minimum )
        {
            mbFixSize = false;
            m_bMinHeight = true;
        }
        nDiffHeight -= rFrameSize.GetHeight();
    }
    // If the Fly contains columns, we already need to set the Fly
    // and the Columns to the required value or else we run into problems.
    if (SwFrame* pLower = Lower())
    {
        if ( pLower->IsColumnFrame() )
        {
            const SwRect aOld( GetObjRectWithSpaces() );
            const Size   aOldSz( getFramePrintArea().SSize() );
            const SwTwips nDiffWidth = getFrameArea().Width() - rFrameSize.GetWidth();

            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aFrm.Height( aFrm.Height() - nDiffHeight );
                aFrm.Width ( aFrm.Width()  - nDiffWidth  );
            }

            // #i68520#
            InvalidateObjRectWithSpaces();

            {
                SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                aPrt.Height( aPrt.Height() - nDiffHeight );
                aPrt.Width ( aPrt.Width()  - nDiffWidth  );
            }

            ChgLowersProp( aOldSz );
            ::Notify( this, FindPageFrame(), aOld );
            setFrameAreaPositionValid(false);
            bRet = true;
        }
        else if ( pLower->IsNoTextFrame() )
        {
            mbFixSize = true;
            m_bMinHeight = false;
        }
    }
    return bRet;
}

void SwFlyFrame::SwClientNotify(const SwModify& rMod, const SfxHint& rHint)
{
    if (rHint.GetId() == SfxHintId::SwFormatChange ||
        rHint.GetId() == SfxHintId::SwLegacyModify ||
        rHint.GetId() == SfxHintId::SwAttrSetChange)
    {
        SwFlyFrameInvFlags eInvFlags = SwFlyFrameInvFlags::NONE;
        if (rHint.GetId() == SfxHintId::SwFormatChange)
        {
            auto pChangeHint = static_cast<const SwFormatChangeHint*>(&rHint);
            UpdateAttrForFormatChange(pChangeHint->m_pOldFormat, pChangeHint->m_pNewFormat, eInvFlags);
        }
        else if (rHint.GetId() == SfxHintId::SwAttrSetChange)
        {
            auto pChangeHint = static_cast<const sw::AttrSetChangeHint*>(&rHint);
            if(pChangeHint->m_pNew && pChangeHint->m_pOld)
            {
                SfxItemIter aNIter(*pChangeHint->m_pNew->GetChgSet());
                SfxItemIter aOIter(*pChangeHint->m_pOld->GetChgSet());
                const SfxPoolItem* pNItem = aNIter.GetCurItem();
                const SfxPoolItem* pOItem = aOIter.GetCurItem();
                SwAttrSetChg aOldSet(*pChangeHint->m_pOld);
                SwAttrSetChg aNewSet(*pChangeHint->m_pNew);
                do
                {
                    UpdateAttr_(pOItem, pNItem, eInvFlags, &aOldSet, &aNewSet);
                    pNItem = aNIter.NextItem();
                    pOItem = aOIter.NextItem();
                } while(pNItem);
                if(aOldSet.Count() || aNewSet.Count())
                    SwLayoutFrame::SwClientNotify(rMod, sw::AttrSetChangeHint(&aOldSet, &aNewSet));
            }
        }
        else // rHint.GetId() == SfxHintId::SwLegacyModify
        {
            auto pLegacy = static_cast<const sw::LegacyModifyHint*>(&rHint);
            UpdateAttr_(pLegacy->m_pOld, pLegacy->m_pNew, eInvFlags);
        }

        if(eInvFlags == SwFlyFrameInvFlags::NONE)
            return;

        Invalidate_();
        if(eInvFlags & SwFlyFrameInvFlags::InvalidatePos)
        {
            InvalidatePos_();
            // #i68520#
            InvalidateObjRectWithSpaces();
        }
        if(eInvFlags & SwFlyFrameInvFlags::InvalidateSize)
        {
            InvalidateSize_();
            // #i68520#
            InvalidateObjRectWithSpaces();
        }
        if(eInvFlags & SwFlyFrameInvFlags::InvalidatePrt)
            InvalidatePrt_();
        if(eInvFlags & SwFlyFrameInvFlags::SetNotifyBack)
            SetNotifyBack();
        if(eInvFlags & SwFlyFrameInvFlags::SetCompletePaint)
            SetCompletePaint();

        SwFrame* pLower = Lower();
        if((eInvFlags & SwFlyFrameInvFlags::ClearContourCache) && pLower && pLower->IsNoTextFrame())
            ClrContourCache( GetVirtDrawObj() );
        SwRootFrame *pRoot;
        if(eInvFlags & SwFlyFrameInvFlags::InvalidateBrowseWidth && nullptr != (pRoot = getRootFrame()))
            pRoot->InvalidateBrowseWidth();
        // #i28701#
        if(eInvFlags & SwFlyFrameInvFlags::UpdateObjInSortedList)
        {
            // update sorted object lists, the Writer fly frame is registered at.
            UpdateObjInSortedList();
        }

        // #i87645# - reset flags for the layout process (only if something has been invalidated)
        ResetLayoutProcessBools();
    }
    else if (rHint.GetId() == SfxHintId::SwAutoFormatUsedHint)
    {
        // There's a FlyFrame, so use it
        static_cast<const sw::AutoFormatUsedHint&>(rHint).SetUsed();
        return;
    }
    else if (rHint.GetId() == SfxHintId::SwGetZOrder)
    {
        auto pGetZOrdnerHint = static_cast<const sw::GetZOrderHint*>(&rHint);
        const auto& rFormat(dynamic_cast<const SwFrameFormat&>(rMod));
        if (rFormat.Which() == RES_FLYFRMFMT && rFormat.getIDocumentLayoutAccess().GetCurrentViewShell()) // #i11176#
            pGetZOrdnerHint->m_rnZOrder = GetVirtDrawObj()->GetOrdNum();
    }
    else if (rHint.GetId() == SfxHintId::SwGetObjectConnected)
    {
        auto pConnectedHint = static_cast<const sw::GetObjectConnectedHint*>(&rHint);
        const auto& rFormat(dynamic_cast<const SwFrameFormat&>(rMod));
        if (!pConnectedHint->m_risConnected && rFormat.Which() == RES_FLYFRMFMT && (!pConnectedHint->m_pRoot || pConnectedHint->m_pRoot == getRootFrame()))
            pConnectedHint->m_risConnected = true;
    }
}

void SwFlyFrame::UpdateAttr_( const SfxPoolItem *pOld, const SfxPoolItem *pNew,
                            SwFlyFrameInvFlags &rInvFlags,
                            SwAttrSetChg *pOldSet, SwAttrSetChg *pNewSet )
{
    bool bClear = true;
    const sal_uInt16 nWhich = pOld ? pOld->Which() : pNew ? pNew->Which() : 0;
    SwViewShell *pSh = getRootFrame()->GetCurrShell();
    switch( nWhich )
    {
        case RES_VERT_ORIENT:
        case RES_HORI_ORIENT:
        //  #i18732# - consider new option 'follow text flow'
        case RES_FOLLOW_TEXT_FLOW:
        {
            // ATTENTION: Always also change Action in ChgRePos()!
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::SetNotifyBack;
        }
        break;
        // #i28701# - consider new option 'wrap influence on position'
        case RES_WRAP_INFLUENCE_ON_OBJPOS:
        {
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::SetNotifyBack
                         | SwFlyFrameInvFlags::UpdateObjInSortedList;
        }
        break;
        case RES_SURROUND:
        {
            //#i28701# - invalidate position on change of
            // wrapping style.
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::ClearContourCache;
            // The background needs to be messaged and invalidated
            const SwRect aTmp( GetObjRectWithSpaces() );
            NotifyBackground( FindPageFrame(), aTmp, PrepareHint::FlyFrameAttributesChanged );

            // By changing the flow of frame-bound Frames, a vertical alignment
            // can be activated/deactivated => MakeFlyPos
            if( RndStdIds::FLY_AT_FLY == GetFormat()->GetAnchor().GetAnchorId() )
                rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::SetNotifyBack;

            // Delete contour in the Node if necessary
            SwFrame* pLower = Lower();
            if ( pLower && pLower->IsNoTextFrame() &&
                 !GetFormat()->GetSurround().IsContour() )
            {
                SwNoTextNode *pNd = static_cast<SwNoTextNode*>(static_cast<SwNoTextFrame*>(pLower)->GetNode());
                if ( pNd->HasContour() )
                    pNd->SetContour( nullptr );
            }
            // #i28701# - perform reorder of object lists
            // at anchor frame and at page frame.
            rInvFlags |= SwFlyFrameInvFlags::UpdateObjInSortedList;
        }
        break;

        case RES_PROTECT:
            if (pNew)
            {
                const SvxProtectItem *pP = static_cast<const SvxProtectItem*>(pNew);
                GetVirtDrawObj()->SetMoveProtect( pP->IsPosProtected()   );
                GetVirtDrawObj()->SetResizeProtect( pP->IsSizeProtected() );
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
                if( pSh )
                {
                    SwRootFrame* pLayout = getRootFrame();
                    if( pLayout && pLayout->IsAnyShellAccessible() )
                        pSh->Imp()->InvalidateAccessibleEditableState( true, this );
                }
#endif
            }
            break;
        case RES_COL:
            if (pOld && pNew)
            {
                ChgColumns( *static_cast<const SwFormatCol*>(pOld), *static_cast<const SwFormatCol*>(pNew) );
                const SwFormatFrameSize &rNew = GetFormat()->GetFrameSize();
                if ( FrameSizeChg( rNew ) )
                    NotifyDrawObj();
                rInvFlags |= SwFlyFrameInvFlags::InvalidateSize | SwFlyFrameInvFlags::SetNotifyBack
                             | SwFlyFrameInvFlags::SetCompletePaint;
            }
            break;

        case RES_FRM_SIZE:
        case RES_FLY_SPLIT:
        {
            const SwFormatFrameSize &rNew = GetFormat()->GetFrameSize();
            if ( FrameSizeChg( rNew ) )
                NotifyDrawObj();
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::InvalidateSize
                         | SwFlyFrameInvFlags::InvalidatePrt | SwFlyFrameInvFlags::SetNotifyBack
                         | SwFlyFrameInvFlags::SetCompletePaint
                         | SwFlyFrameInvFlags::InvalidateBrowseWidth
                         | SwFlyFrameInvFlags::ClearContourCache;

            SwFormatURL aURL( GetFormat()->GetURL() );

            SwFormatFrameSize *pNewFormatFrameSize = nullptr;
            if (nWhich == RES_FRM_SIZE)
                pNewFormatFrameSize = const_cast<SwFormatFrameSize*>(static_cast<const SwFormatFrameSize*>(pNew));
            else if (nWhich == RES_FLY_SPLIT)
            {
                // If the fly frame has a table lower, invalidate that, so it joins its follow tab
                // frames and re-splits according to the new fly split rule.
                if (Lower() && Lower()->IsTabFrame())
                {
                    Lower()->InvalidateAll_();
                }
            }

            if (aURL.GetMap() && pNewFormatFrameSize)
            {
                const SwFormatFrameSize &rOld = *pNewFormatFrameSize;
                //#35091# Can be "times zero", when loading the template
                if ( rOld.GetWidth() && rOld.GetHeight() )
                {

                    Fraction aScaleX( rOld.GetWidth(), rNew.GetWidth() );
                    Fraction aScaleY( rOld.GetHeight(), rOld.GetHeight() );
                    aURL.GetMap()->Scale( aScaleX, aScaleY );
                    SwFrameFormat *pFormat = GetFormat();
                    pFormat->LockModify();
                    pFormat->SetFormatAttr( aURL );
                    pFormat->UnlockModify();
                }
            }
            const SvxProtectItem &rP = GetFormat()->GetProtect();
            GetVirtDrawObj()->SetMoveProtect( rP.IsPosProtected()    );
            GetVirtDrawObj()->SetResizeProtect( rP.IsSizeProtected() );

            if ( pSh )
                pSh->InvalidateWindows( getFrameArea() );
            const IDocumentDrawModelAccess& rIDDMA = GetFormat()->getIDocumentDrawModelAccess();
            const IDocumentSettingAccess& rIDSA = GetFormat()->getIDocumentSettingAccess();
            bool isPaintHellOverHF = rIDSA.get(DocumentSettingId::PAINT_HELL_OVER_HEADER_FOOTER);
            SdrLayerID nHellId = rIDDMA.GetHellId();

            if (isPaintHellOverHF && !GetAnchorFrame()->FindFooterOrHeader())
            {
                nHellId = rIDDMA.GetHeaderFooterHellId();
            }
            bool bNoClippingWithWrapPolygon = rIDSA.get(DocumentSettingId::NO_CLIPPING_WITH_WRAP_POLYGON);
            SdrLayerID nId = nHellId;
            if (GetFormat()->GetOpaque().GetValue() &&
                !(bNoClippingWithWrapPolygon && GetFrameFormat()->GetSurround().IsContour()))
                nId = rIDDMA.GetHeavenId();
            GetVirtDrawObj()->SetLayer( nId );

            if ( SwFrame* pLower = Lower() )
            {
                // Delete contour in the Node if necessary
                if( pLower->IsNoTextFrame() &&
                     !GetFormat()->GetSurround().IsContour() )
                {
                    SwNoTextNode *pNd = static_cast<SwNoTextNode*>(static_cast<SwNoTextFrame*>(pLower)->GetNode());
                    if ( pNd->HasContour() )
                        pNd->SetContour( nullptr );
                }
                else if( !pLower->IsColumnFrame() )
                {
                    SwFrame* pFrame = GetLastLower();
                    if( pFrame->IsTextFrame() && static_cast<SwTextFrame*>(pFrame)->IsUndersized() )
                        pFrame->Prepare( PrepareHint::AdjustSizeWithoutFormatting );
                }
            }

            // #i28701# - perform reorder of object lists
            // at anchor frame and at page frame.
            rInvFlags |= SwFlyFrameInvFlags::UpdateObjInSortedList;

            break;
        }
        case RES_UL_SPACE:
        case RES_LR_SPACE:
        {
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::ClearContourCache;
            if( pSh && pSh->GetViewOptions()->getBrowseMode() )
                getRootFrame()->InvalidateBrowseWidth();
            SwRect aNew( GetObjRectWithSpaces() );
            SwRect aOld( getFrameArea() );
            if (pNew)
            {
                if ( RES_UL_SPACE == nWhich )
                {
                    const SvxULSpaceItem &rUL = *static_cast<const SvxULSpaceItem*>(pNew);
                    aOld.Top( std::max( aOld.Top() - tools::Long(rUL.GetUpper()), tools::Long(0) ) );
                    aOld.AddHeight(rUL.GetLower() );
                }
                else
                {
                    const SvxLRSpaceItem &rLR = *static_cast<const SvxLRSpaceItem*>(pNew);
                    aOld.Left(std::max(aOld.Left() - rLR.ResolveLeft({}), tools::Long(0)));
                    aOld.AddWidth(rLR.ResolveRight({}));
                }
            }
            aNew.Union( aOld );
            NotifyBackground( FindPageFrame(), aNew, PrepareHint::Clear );
        }
        break;

        case RES_TEXT_VERT_ADJUST:
        {
            InvalidateContentPos();
            rInvFlags |= SwFlyFrameInvFlags::SetCompletePaint;
        }
        break;

        case RES_BOX:
        case RES_SHADOW:
            rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::InvalidateSize
                         | SwFlyFrameInvFlags::InvalidatePrt | SwFlyFrameInvFlags::SetCompletePaint;
            break;

        case RES_FRAMEDIR :
            SetDerivedVert( false );
            SetDerivedR2L( false );
            CheckDirChange();
            break;

        case RES_OPAQUE:
            if (pNew)
            {
                if ( pSh )
                    pSh->InvalidateWindows( getFrameArea() );

                const IDocumentDrawModelAccess& rIDDMA = GetFormat()->getIDocumentDrawModelAccess();
                const SdrLayerID nId = static_cast<const SvxOpaqueItem*>(pNew)->GetValue() ?
                                    rIDDMA.GetHeavenId() :
                                    rIDDMA.GetHellId();
                GetVirtDrawObj()->SetLayer( nId );
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
                if( pSh )
                {
                    SwRootFrame* pLayout = getRootFrame();
                    if( pLayout && pLayout->IsAnyShellAccessible() )
                    {
                        pSh->Imp()->DisposeAccessibleFrame( this );
                        pSh->Imp()->AddAccessibleFrame( this );
                    }
                }
#endif
                // #i28701# - perform reorder of object lists
                // at anchor frame and at page frame.
                rInvFlags |= SwFlyFrameInvFlags::UpdateObjInSortedList;
            }
            break;

        case RES_URL:
        {
            // The interface changes the frame size when interacting with text frames,
            // the Map, however, needs to be relative to FrameSize().
            SwFrame* pLower = Lower();
            if ( (!pLower || !pLower->IsNoTextFrame()) && pNew && pOld &&
                 static_cast<const SwFormatURL*>(pNew)->GetMap() && static_cast<const SwFormatURL*>(pOld)->GetMap() )
            {
                const SwFormatFrameSize &rSz = GetFormat()->GetFrameSize();
                if ( rSz.GetHeight() != getFrameArea().Height() ||
                     rSz.GetWidth()  != getFrameArea().Width() )
                {
                    SwFormatURL aURL( GetFormat()->GetURL() );
                    Fraction aScaleX( getFrameArea().Width(),  rSz.GetWidth() );
                    Fraction aScaleY( getFrameArea().Height(), rSz.GetHeight() );
                    aURL.GetMap()->Scale( aScaleX, aScaleY );
                    SwFrameFormat *pFormat = GetFormat();
                    pFormat->LockModify();
                    pFormat->SetFormatAttr( aURL );
                    pFormat->UnlockModify();
                }
            }
        }
        // No invalidation necessary
        break;

        case RES_CHAIN:
            if (pNew)
            {
                const SwFormatChain *pChain = static_cast<const SwFormatChain*>(pNew);
                if ( pChain->GetNext() )
                {
                    SwFlyFrame *pFollow = FindChainNeighbour( *pChain->GetNext() );
                    if ( GetNextLink() && pFollow != GetNextLink() )
                        SwFlyFrame::UnchainFrames( *this, *GetNextLink());
                    if ( pFollow )
                    {
                        if ( pFollow->GetPrevLink() &&
                             pFollow->GetPrevLink() != this )
                            SwFlyFrame::UnchainFrames( *pFollow->GetPrevLink(),
                                                     *pFollow );
                        if ( !GetNextLink() )
                            SwFlyFrame::ChainFrames( *this, *pFollow );
                    }
                }
                else if ( GetNextLink() )
                    SwFlyFrame::UnchainFrames( *this, *GetNextLink() );
                if ( pChain->GetPrev() )
                {
                    SwFlyFrame *pMaster = FindChainNeighbour( *pChain->GetPrev() );
                    if ( GetPrevLink() && pMaster != GetPrevLink() )
                        SwFlyFrame::UnchainFrames( *GetPrevLink(), *this );
                    if ( pMaster )
                    {
                        if ( pMaster->GetNextLink() &&
                             pMaster->GetNextLink() != this )
                            SwFlyFrame::UnchainFrames( *pMaster, *pMaster->GetNextLink() );
                        if ( !GetPrevLink() )
                            SwFlyFrame::ChainFrames( *pMaster, *this );
                    }
                }
                else if ( GetPrevLink() )
                    SwFlyFrame::UnchainFrames( *GetPrevLink(), *this );
            }
            [[fallthrough]];
        default:
            bClear = false;
    }
    if ( !bClear )
        return;

    if ( pOldSet || pNewSet )
    {
        if ( pOldSet )
            pOldSet->ClearItem( nWhich );
        if ( pNewSet )
            pNewSet->ClearItem( nWhich );
    }
    else
    {
        SwModify aMod;
        SwLayoutFrame::SwClientNotify(aMod, sw::LegacyModifyHint(pOld, pNew));
    }
}

void SwFlyFrame::UpdateAttrForFormatChange( SwFormat *pOldFormat, SwFormat *pNewFormat,
                            SwFlyFrameInvFlags &rInvFlags )
{
    SwViewShell *pSh = getRootFrame()->GetCurrShell();
    {
        const SwFormatFrameSize &rNew = GetFormat()->GetFrameSize();
        if ( FrameSizeChg( rNew ) )
            NotifyDrawObj();
        rInvFlags |= SwFlyFrameInvFlags::InvalidatePos | SwFlyFrameInvFlags::InvalidateSize
                     | SwFlyFrameInvFlags::InvalidatePrt | SwFlyFrameInvFlags::SetNotifyBack
                     | SwFlyFrameInvFlags::SetCompletePaint
                     | SwFlyFrameInvFlags::InvalidateBrowseWidth
                     | SwFlyFrameInvFlags::ClearContourCache;
        {
            SwRect aNew( GetObjRectWithSpaces() );
            SwRect aOld( getFrameArea() );
            const SvxULSpaceItem &rUL = pOldFormat->GetULSpace();
            aOld.Top( std::max( aOld.Top() - tools::Long(rUL.GetUpper()), tools::Long(0) ) );
            aOld.AddHeight(rUL.GetLower() );
            const SvxLRSpaceItem &rLR = pOldFormat->GetLRSpace();
            aOld.Left(std::max(aOld.Left() - rLR.ResolveLeft({}), tools::Long(0)));
            aOld.AddWidth(rLR.ResolveRight({}));
            aNew.Union( aOld );
            NotifyBackground( FindPageFrame(), aNew, PrepareHint::Clear );

            // Special case:
            // When assigning a template we cannot rely on the old column
            // attribute. As there need to be at least enough for ChgColumns,
            // we need to create a temporary attribute.
            SwFormatCol aCol;
            if ( Lower() && Lower()->IsColumnFrame() )
            {
                sal_uInt16 nCol = 0;
                SwFrame *pTmp = Lower();
                do
                {   ++nCol;
                    pTmp = pTmp->GetNext();
                } while ( pTmp );
                aCol.Init( nCol, 0, 1000 );
            }
            ChgColumns( aCol, GetFormat()->GetCol() );
        }

        SwFormatURL aURL( GetFormat()->GetURL() );

        if (aURL.GetMap() && pOldFormat)
        {
            const SwFormatFrameSize &rOld = pOldFormat->GetFrameSize();
            //#35091# Can be "times zero", when loading the template
            if ( rOld.GetWidth() && rOld.GetHeight() )
            {

                Fraction aScaleX( rOld.GetWidth(), rNew.GetWidth() );
                Fraction aScaleY( rOld.GetHeight(), rOld.GetHeight() );
                aURL.GetMap()->Scale( aScaleX, aScaleY );
                SwFrameFormat *pFormat = GetFormat();
                pFormat->LockModify();
                pFormat->SetFormatAttr( aURL );
                pFormat->UnlockModify();
            }
        }
        const SvxProtectItem &rP = GetFormat()->GetProtect();
        GetVirtDrawObj()->SetMoveProtect( rP.IsPosProtected()    );
        GetVirtDrawObj()->SetResizeProtect( rP.IsSizeProtected() );

        if ( pSh )
            pSh->InvalidateWindows( getFrameArea() );
        const IDocumentDrawModelAccess& rIDDMA = GetFormat()->getIDocumentDrawModelAccess();
        const IDocumentSettingAccess& rIDSA = GetFormat()->getIDocumentSettingAccess();
        bool isPaintHellOverHF = rIDSA.get(DocumentSettingId::PAINT_HELL_OVER_HEADER_FOOTER);
        SdrLayerID nHellId = rIDDMA.GetHellId();

        if (isPaintHellOverHF && !GetAnchorFrame()->FindFooterOrHeader())
        {
            nHellId = rIDDMA.GetHeaderFooterHellId();
        }
        bool bNoClippingWithWrapPolygon = rIDSA.get(DocumentSettingId::NO_CLIPPING_WITH_WRAP_POLYGON);
        SdrLayerID nId = nHellId;
        if (GetFormat()->GetOpaque().GetValue() &&
            !(bNoClippingWithWrapPolygon && GetFrameFormat()->GetSurround().IsContour()))
            nId = rIDDMA.GetHeavenId();
        GetVirtDrawObj()->SetLayer( nId );

        SwFrame* pFrame = Lower();
        if ( pFrame )
        {
            // Delete contour in the Node if necessary
            if( pFrame->IsNoTextFrame() &&
                 !GetFormat()->GetSurround().IsContour() )
            {
                SwNoTextNode *pNd = static_cast<SwNoTextNode*>(static_cast<SwNoTextFrame*>(pFrame)->GetNode());
                if ( pNd->HasContour() )
                    pNd->SetContour( nullptr );
            }
            else if( !pFrame->IsColumnFrame() )
            {
                pFrame = GetLastLower();
                if( pFrame->IsTextFrame() && static_cast<SwTextFrame*>(pFrame)->IsUndersized() )
                    pFrame->Prepare( PrepareHint::AdjustSizeWithoutFormatting );
            }
        }

        // #i28701# - perform reorder of object lists
        // at anchor frame and at page frame.
        rInvFlags |= SwFlyFrameInvFlags::UpdateObjInSortedList;
    }

    SwModify aMod;
    SwLayoutFrame::SwClientNotify(aMod, SwFormatChangeHint(pOldFormat, pNewFormat));
}

void SwFlyFrame::Invalidate_( SwPageFrame const *pPage )
{
    InvalidatePage( pPage );
    m_bNotifyBack = m_bInvalid = true;

    SwFlyFrame *pFrame;
    if ( GetAnchorFrame() && nullptr != (pFrame = AnchorFrame()->FindFlyFrame()) )
    {
        // Very bad case: If the Fly is bound within another Fly which
        // contains columns, the Format should be from that one.
        SwFrame* pLower = pFrame->Lower();
        if ( !pFrame->IsLocked() && !pFrame->IsColLocked() &&
             pLower && pLower->IsColumnFrame() )
            pFrame->InvalidateSize();
    }

    // #i85216#
    // if vertical position is oriented at a layout frame inside a ghost section,
    // assure that the position is invalidated and that the information about
    // the vertical position oriented frame is cleared
    if ( GetVertPosOrientFrame() && GetVertPosOrientFrame()->IsLayoutFrame() )
    {
        const SwSectionFrame* pSectFrame( GetVertPosOrientFrame()->FindSctFrame() );
        if ( pSectFrame && pSectFrame->GetSection() == nullptr )
        {
            InvalidatePos();
            ClearVertPosOrientFrame();
        }
    }
}

/** Change the relative position
 *
 * The position will be Fix automatically and the attribute is changed accordingly.
 */
void SwFlyFrame::ChgRelPos( const Point &rNewPos )
{
    if ( GetCurrRelPos() == rNewPos )
        return;

    SwFrameFormat *pFormat = GetFormat();
    const bool bVert = GetAnchorFrame()->IsVertical();
    const SwTwips nNewY = bVert ? rNewPos.X() : rNewPos.Y();
    SwTwips nTmpY = nNewY == LONG_MAX ? 0 : nNewY;
    if( bVert )
        nTmpY = -nTmpY;
    SfxItemSetFixed<RES_VERT_ORIENT, RES_HORI_ORIENT> aSet( pFormat->GetDoc().GetAttrPool() );

    SwFormatVertOrient aVert( pFormat->GetVertOrient() );
    const SwTextFrame *pAutoFrame = nullptr;
    // #i34948# - handle also at-page and at-fly anchored
    // Writer fly frames
    const RndStdIds eAnchorType = GetFrameFormat()->GetAnchor().GetAnchorId();
    if ( eAnchorType == RndStdIds::FLY_AT_PAGE )
    {
        aVert.SetVertOrient( text::VertOrientation::NONE );
        aVert.SetRelationOrient( text::RelOrientation::PAGE_FRAME );
    }
    else if ( eAnchorType == RndStdIds::FLY_AT_FLY )
    {
        aVert.SetVertOrient( text::VertOrientation::NONE );
        aVert.SetRelationOrient( text::RelOrientation::FRAME );
    }
    else if ( IsFlyAtContentFrame() || text::VertOrientation::NONE != aVert.GetVertOrient() )
    {
        if( text::RelOrientation::CHAR == aVert.GetRelationOrient() && IsAutoPos() )
        {
            if( LONG_MAX != nNewY )
            {
                aVert.SetVertOrient( text::VertOrientation::NONE );
                assert(GetAnchorFrame()->IsTextFrame());
                pAutoFrame = static_cast<const SwTextFrame*>(GetAnchorFrame());
                TextFrameIndex const nOfs(pAutoFrame->MapModelToViewPos(
                            *pFormat->GetAnchor().GetContentAnchor()));
                while( pAutoFrame->GetFollow() &&
                       pAutoFrame->GetFollow()->GetOffset() <= nOfs )
                {
                    if( pAutoFrame == GetAnchorFrame() )
                        nTmpY += pAutoFrame->GetRelPos().Y();
                    nTmpY -= pAutoFrame->GetUpper()->getFramePrintArea().Height();
                    pAutoFrame = pAutoFrame->GetFollow();
                }
                nTmpY = static_cast<SwFlyAtContentFrame*>(this)->GetRelCharY(pAutoFrame)-nTmpY;
            }
            else
                aVert.SetVertOrient( text::VertOrientation::CHAR_BOTTOM );
        }
        else
        {
            aVert.SetVertOrient( text::VertOrientation::NONE );
            aVert.SetRelationOrient( text::RelOrientation::FRAME );
        }
    }
    aVert.SetPos( nTmpY );
    aSet.Put( aVert );

    // For Flys in the Cnt, the horizontal orientation is of no interest,
    // as it's always 0
    if ( !IsFlyInContentFrame() )
    {
        const SwTwips nNewX = bVert ? rNewPos.Y() : rNewPos.X();
        SwTwips nTmpX = nNewX == LONG_MAX ? 0 : nNewX;
        SwFormatHoriOrient aHori( pFormat->GetHoriOrient() );
        // #i34948# - handle also at-page and at-fly anchored
        // Writer fly frames
        if ( eAnchorType == RndStdIds::FLY_AT_PAGE )
        {
            aHori.SetHoriOrient( text::HoriOrientation::NONE );
            aHori.SetRelationOrient( text::RelOrientation::PAGE_FRAME );
            aHori.SetPosToggle( false );
        }
        else if ( eAnchorType == RndStdIds::FLY_AT_FLY )
        {
            aHori.SetHoriOrient( text::HoriOrientation::NONE );
            aHori.SetRelationOrient( text::RelOrientation::FRAME );
            aHori.SetPosToggle( false );
        }
        else if ( IsFlyAtContentFrame() || text::HoriOrientation::NONE != aHori.GetHoriOrient() )
        {
            aHori.SetHoriOrient( text::HoriOrientation::NONE );
            if( text::RelOrientation::CHAR == aHori.GetRelationOrient() && IsAutoPos() )
            {
                if( LONG_MAX != nNewX )
                {
                    if( !pAutoFrame )
                    {
                        assert(GetAnchorFrame()->IsTextFrame());
                        pAutoFrame = static_cast<const SwTextFrame*>(GetAnchorFrame());
                        TextFrameIndex const nOfs(pAutoFrame->MapModelToViewPos(
                                    *pFormat->GetAnchor().GetContentAnchor()));
                        while( pAutoFrame->GetFollow() &&
                               pAutoFrame->GetFollow()->GetOffset() <= nOfs )
                            pAutoFrame = pAutoFrame->GetFollow();
                    }
                    nTmpX -= static_cast<SwFlyAtContentFrame*>(this)->GetRelCharX(pAutoFrame);
                }
            }
            else
                aHori.SetRelationOrient( text::RelOrientation::FRAME );
            aHori.SetPosToggle( false );
        }
        aHori.SetPos( nTmpX );
        aSet.Put( aHori );
    }
    SetCurrRelPos( rNewPos );
    pFormat->GetDoc().SetAttr( aSet, *pFormat );

}

/** "Formats" the Frame; Frame and PrtArea.
 *
 * The FixSize is not inserted here.
 */
void SwFlyFrame::Format( vcl::RenderContext* /*pRenderContext*/, const SwBorderAttrs *pAttrs )
{
    OSL_ENSURE( pAttrs, "FlyFrame::Format, pAttrs is 0." );

    ColLock();

    if ( !isFrameAreaSizeValid() )
    {
        if ( getFrameArea().Top() == FAR_AWAY && getFrameArea().Left() == FAR_AWAY )
        {
            // Remove safety switch (see SwFrame::CTor)
            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aFrm.Pos().setX(0);
                aFrm.Pos().setY(0);
            }

            // #i68520#
            InvalidateObjRectWithSpaces();
        }

        // Check column width and set it if needed
        SwFrame* pLower = Lower();
        if ( pLower && pLower->IsColumnFrame() )
            AdjustColumns( nullptr, false );

        setFrameAreaSizeValid(true);

        const SwTwips nUL = pAttrs->CalcTopLine()  + pAttrs->CalcBottomLine();
        const SwTwips nLR = pAttrs->CalcLeftLine() + pAttrs->CalcRightLine();
        const SwFormatFrameSize &rFrameSz = GetFormat()->GetFrameSize();
        Size aRelSize( CalcRel( rFrameSz ) );

        OSL_ENSURE( pAttrs->GetSize().Height() != 0 || rFrameSz.GetHeightPercent(), "FrameAttr height is 0." );
        OSL_ENSURE( pAttrs->GetSize().Width()  != 0 || rFrameSz.GetWidthPercent(), "FrameAttr width is 0." );

        SwRectFnSet aRectFnSet(this);
        if( !HasFixSize() )
        {
            tools::Long nMinHeight = 0;
            if( IsMinHeight() )
                nMinHeight = aRectFnSet.IsVert() ? aRelSize.Width() : aRelSize.Height();

            SwTwips nRemaining = CalcContentHeight(pAttrs, nMinHeight, nUL);
            if( IsMinHeight() && (nRemaining + nUL) < nMinHeight )
                nRemaining = nMinHeight - nUL;
            // Because the Grow/Shrink of the Flys does not directly
            // set the size - only indirectly by triggering a Format()
            // via Invalidate() - the sizes need to be set here.
            // Notification is running along already.
            // As we already got a lot of zeros per attribute, we block them
            // from now on.

            if ( nRemaining < MINFLY )
                nRemaining = MINFLY;

            const SwFrame* pAnchor = GetAnchorFrame();
            if (SwFrame* pAnchorChar = FindAnchorCharFrame())
            {
                // If we find a follow of the anchor that is effectively the anchor of this fly,
                // then use that as the anchor for sizing purposes.
                pAnchor = pAnchorChar;
            }
            if (pAnchor && IsFlySplitAllowed())
            {
                // If the fly is allowed to be split, then limit its size to the upper of the
                // anchor.
                SwTwips nDeadline = GetFlyAnchorBottom(this, *pAnchor);
                SwTwips nTop = aRectFnSet.GetTop(getFrameArea());
                SwTwips nBottom = aRectFnSet.GetTop(getFrameArea()) + nRemaining;
                if (nBottom > nDeadline)
                {
                    if (nDeadline > nTop)
                    {
                        nRemaining = nDeadline - nTop;
                    }
                    else
                    {
                        // Even the top is below the deadline, set size to empty and mark it as
                        // clipped so we re-format later.
                        nRemaining = 0;
                        m_bHeightClipped = true;
                    }
                }
            }

            {
                SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                aRectFnSet.SetHeight( aPrt, nRemaining );
            }

            nRemaining -= aRectFnSet.GetHeight(getFrameArea());

            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aRectFnSet.AddBottom( aFrm, nRemaining + nUL );
            }

            // #i68520#
            if ( nRemaining + nUL != 0 )
            {
                InvalidateObjRectWithSpaces();
            }

            setFrameAreaSizeValid(true);

            if (SwFrameFormat* pShapeFormat = SwTextBoxHelper::getOtherTextBoxFormat(GetFormat(), RES_FLYFRMFMT))
            {
                // This fly is a textbox of a draw shape.
                SdrObject* pShape = pShapeFormat->FindSdrObject();
                if (SdrObjCustomShape* pCustomShape = dynamic_cast<SdrObjCustomShape*>( pShape) )
                {
                    // The shape is a customshape: then inform it about the calculated fly size.
                    Size aSize(getFrameArea().Width(), getFrameArea().Height());
                    pCustomShape->SuggestTextFrameSize(aSize);
                    // Do the calculations normally done after touching editeng text of the shape.
                    pCustomShape->NbcSetOutlinerParaObjectForText(std::nullopt, nullptr);
                }
            }
        }
        else
        {
            // Fixed Frames do not Format itself
            setFrameAreaSizeValid(true);

            // Flys set their size using the attr
            SwTwips nNewSize = aRectFnSet.IsVert() ? aRelSize.Width() : aRelSize.Height();
            nNewSize -= nUL;
            if( nNewSize < MINFLY )
                nNewSize = MINFLY;

            {
                SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                aRectFnSet.SetHeight( aPrt, nNewSize );
            }

            nNewSize += nUL - aRectFnSet.GetHeight(getFrameArea());

            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aRectFnSet.AddBottom( aFrm, nNewSize );
            }

            // #i68520#
            if ( nNewSize != 0 )
            {
                InvalidateObjRectWithSpaces();
            }
        }

        if ( !m_bFormatHeightOnly )
        {
            OSL_ENSURE( aRelSize == CalcRel( rFrameSz ), "SwFlyFrame::Format CalcRel problem" );
            SwTwips nNewSize = aRectFnSet.IsVert() ? aRelSize.Height() : aRelSize.Width();

            if ( rFrameSz.GetWidthSizeType() != SwFrameSize::Fixed )
            {
                // #i9046# Autowidth for fly frames
                const SwTwips nAutoWidth = lcl_CalcAutoWidth( *this );
                if ( nAutoWidth )
                {
                    if( SwFrameSize::Minimum == rFrameSz.GetWidthSizeType() )
                        nNewSize = std::max( nNewSize - nLR, nAutoWidth );
                    else
                        nNewSize = nAutoWidth;
                }
            }
            else
                nNewSize -= nLR;

            if( nNewSize < MINFLY )
                nNewSize = MINFLY;

            {
                SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                aRectFnSet.SetWidth( aPrt, nNewSize );
            }

            nNewSize += nLR - aRectFnSet.GetWidth(getFrameArea());

            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aRectFnSet.AddRight( aFrm, nNewSize );
            }

            // #i68520#
            if ( nNewSize != 0 )
            {
                InvalidateObjRectWithSpaces();
            }
        }
    }
    ColUnlock();
}

// #i11760# - change parameter <bNoColl>: type <bool>;
//   add new parameter <bNoCalcFollow> with
//  new parameter <bNoCalcFollow> was used by method
//                          <FormatWidthCols(..)> to avoid follow formatting
//                          for text frames. But, unformatted follows causes
//                          problems in method <SwContentFrame::WouldFit_(..)>,
//                          which assumes that the follows are formatted.
//                          Thus, <bNoCalcFollow> no longer used by <FormatWidthCols(..)>.
void CalcContent( SwLayoutFrame *pLay, bool bNoColl )
{
    SwViewShell & rShell(*pLay->getRootFrame()->GetCurrShell());
    vcl::RenderContext* pRenderContext = rShell.GetOut();
    SwSectionFrame* pSect;
    bool bCollect = false;
    if( pLay->IsSctFrame() )
    {
        pSect = static_cast<SwSectionFrame*>(pLay);
        if( pSect->IsEndnAtEnd() && !bNoColl )
        {
            bCollect = true;
            SwLayouter::CollectEndnotes( pLay->GetFormat()->GetDoc(), pSect );
        }
        pSect->CalcFootnoteContent();
    }
    else
        pSect = nullptr;
    SwFrame *pFrame = pLay->ContainsAny();
    if ( !pFrame )
    {
        if( pSect )
        {
            if( pSect->HasFollow() )
                pFrame = pSect->GetFollow()->ContainsAny();
            if( !pFrame )
            {
                if( pSect->IsEndnAtEnd() )
                {
                    if( bCollect )
                        pLay->GetFormat()->GetDoc().getIDocumentLayoutAccess().GetLayouter()->
                            InsertEndnotes( pSect );
                    bool bLock = pSect->IsFootnoteLock();
                    pSect->SetFootnoteLock( true );
                    pSect->CalcFootnoteContent();
                    pSect->CalcFootnoteContent();
                    pSect->SetFootnoteLock( bLock );
                }
                return;
            }
            pFrame->InvalidatePos_();
        }
        else
            return;
    }
    pFrame->InvalidatePage();

    do
    {
        // local variables to avoid loops caused by anchored object positioning
        SwAnchoredObject* pAgainObj1 = nullptr;
        SwAnchoredObject* pAgainObj2 = nullptr;

        // FME 2007-08-30 #i81146# new loop control
--> --------------------

--> maximum size reached

--> --------------------