/* -*- 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.
    if ( Lower() && Lower()->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(), "<SwFlyFrame::InsertColumns()> - 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();
    }
    bool bNoClippingWithWrapPolygon = rIDSA.get(DocumentSettingId::NO_CLIPPING_WITH_WRAP_POLYGON);
    if (bNoClippingWithWrapPolygon && isOpaque)
    {
        if (GetFrameFormat()->GetSurround().IsContour())
        {
            GetVirtDrawObj()->SetLayer(nHellId);
            return;
        }
 
    }
    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();
                            if (pOldSelFly)
                            {
                                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 *pMaster, SwFlyFrame *pFollow )
{
    assert(pMaster && pFollow && "incomplete chain");
    OSL_ENSURE( !pMaster->GetNextLink(), "link can not be changed" );
    OSL_ENSURE( !pFollow->GetPrevLink(), "link can not be changed" );
 
    pMaster->m_pNextLink = pFollow;
    pFollow->m_pPrevLink = pMaster;
 
    if ( pMaster->ContainsContent() )
    {
        // To get a text flow we need to invalidate
        SwFrame *pInva = pMaster->FindLastLower();
        SwRectFnSet aRectFnSet(pMaster);
        const tools::Long nBottom = aRectFnSet.GetPrtBottom(*pMaster);
        while ( pInva )
        {
            if( aRectFnSet.BottomDist( pInva->getFrameArea(), nBottom ) <= 0 )
            {
                pInva->InvalidateSize();
                pInva->Prepare();
                pInva = pInva->FindPrev();
            }
            else
                pInva = nullptr;
        }
    }
 
    if ( pFollow->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 = pFollow->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 = pMaster->getRootFrame()->GetCurrShell();
    if( pSh )
    {
        SwRootFrame* pLayout = pMaster->getRootFrame();
        if( pLayout && pLayout->IsAnyShellAccessible() )
            pSh->Imp()->InvalidateAccessibleRelationSet( pMaster, pFollow );
    }
#endif
}
 
void SwFlyFrame::UnchainFrames( SwFlyFrame *pMaster, SwFlyFrame *pFollow )
{
    pMaster->m_pNextLink = nullptr;
    pFollow->m_pPrevLink = nullptr;
 
    if ( pFollow->ContainsContent() )
    {
        // The Master sucks up the content of the Follow
        SwLayoutFrame *pUpper = pMaster;
        if ( pUpper->Lower()->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 = pFollow;
        while ( pFoll )
        {
            SwFrame *pTmp = ::SaveContent( pFoll );
            if ( pTmp )
                ::RestoreContent( pTmp, pUpper, pMaster->FindLastLower() );
            pFoll->SetCompletePaint();
            pFoll->InvalidateSize();
            pFoll = pFoll->GetNextLink();
        }
    }
 
    // The Follow needs his own content to be served
    const SwFormatContent &rContent = pFollow->GetFormat()->GetContent();
    OSL_ENSURE( rContent.GetContentIdx(), ":-( No content prepared." );
    SwNodeOffset nIndex = rContent.GetContentIdx()->GetIndex();
    // Lower() means SwColumnFrame: this one contains another SwBodyFrame
    ::InsertCnt_( pFollow->Lower() ? const_cast<SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(pFollow->Lower())->Lower()))
                                   : static_cast<SwLayoutFrame*>(pFollow),
                  pFollow->GetFormat()->GetDoc(), ++nIndex );
 
    // invalidate accessible relation set (accessibility wrapper)
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    SwViewShell* pSh = pMaster->getRootFrame()->GetCurrShell();
    if( pSh )
    {
        SwRootFrame* pLayout = pMaster->getRootFrame();
        if( pLayout && pLayout->IsAnyShellAccessible() )
            pSh->Imp()->InvalidateAccessibleRelationSet( pMaster, pFollow );
    }
#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 ( Lower() )
    {
        if ( Lower()->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 ( Lower()->IsNoTextFrame() )
        {
            mbFixSize = true;
            m_bMinHeight = false;
        }
    }
    return bRet;
}
 
void SwFlyFrame::SwClientNotify(const SwModify& rMod, const SfxHint& rHint)
{
    if (rHint.GetId() == SfxHintId::SwLegacyModify)
    {
        auto pLegacy = static_cast<const sw::LegacyModifyHint*>(&rHint);
        SwFlyFrameInvFlags eInvFlags = SwFlyFrameInvFlags::NONE;
        if(pLegacy->m_pNew && pLegacy->m_pOld && RES_ATTRSET_CHG == pLegacy->m_pNew->Which())
        {
            SfxItemIter aNIter(*static_cast<const SwAttrSetChg*>(pLegacy->m_pNew)->GetChgSet());
            SfxItemIter aOIter(*static_cast<const SwAttrSetChg*>(pLegacy->m_pOld)->GetChgSet());
            const SfxPoolItem* pNItem = aNIter.GetCurItem();
            const SfxPoolItem* pOItem = aOIter.GetCurItem();
            SwAttrSetChg aOldSet(*static_cast<const SwAttrSetChg*>(pLegacy->m_pOld));
            SwAttrSetChg aNewSet(*static_cast<const SwAttrSetChg*>(pLegacy->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::LegacyModifyHint(&aOldSet, &aNewSet));
        }
        else
            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();
        if((eInvFlags & SwFlyFrameInvFlags::ClearContourCache) && Lower() && Lower()->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
            if ( Lower() && Lower()->IsNoTextFrame() &&
                 !GetFormat()->GetSurround().IsContour() )
            {
                SwNoTextNode *pNd = static_cast<SwNoTextNode*>(static_cast<SwNoTextFrame*>(Lower())->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_FMT_CHG:
        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;
            if (pOld && RES_FMT_CHG == nWhich)
            {
                SwRect aNew( GetObjRectWithSpaces() );
                SwRect aOld( getFrameArea() );
                const SvxULSpaceItem &rUL = static_cast<const SwFormatChg*>(pOld)->pChangedFormat->GetULSpace();
                aOld.Top( std::max( aOld.Top() - tools::Long(rUL.GetUpper()), tools::Long(0) ) );
                aOld.AddHeight(rUL.GetLower() );
                const SvxLRSpaceItem &rLR = static_cast<const SwFormatChg*>(pOld)->pChangedFormat->GetLRSpace();
                aOld.Left  ( std::max( aOld.Left() - rLR.GetLeft(), tools::Long(0) ) );
                aOld.AddWidth(rLR.GetRight() );
                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() );
 
            SwFormatFrameSize *pNewFormatFrameSize = nullptr;
            SwFormatChg *pOldFormatChg = nullptr;
            if (nWhich == RES_FRM_SIZE)
                pNewFormatFrameSize = const_cast<SwFormatFrameSize*>(static_cast<const SwFormatFrameSize*>(pNew));
            else if (nWhich == RES_FMT_CHG)
                pOldFormatChg = const_cast<SwFormatChg*>(static_cast<const SwFormatChg*>(pOld));
            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 || pOldFormatChg))
            {
                const SwFormatFrameSize &rOld = pNewFormatFrameSize ?
                                *pNewFormatFrameSize :
                                pOldFormatChg->pChangedFormat->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 );
 
            if ( Lower() )
            {
                // Delete contour in the Node if necessary
                if( Lower()->IsNoTextFrame() &&
                     !GetFormat()->GetSurround().IsContour() )
                {
                    SwNoTextNode *pNd = static_cast<SwNoTextNode*>(static_cast<SwNoTextFrame*>(Lower())->GetNode());
                    if ( pNd->HasContour() )
                        pNd->SetContour( nullptr );
                }
                else if( !Lower()->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.GetLeft(), tools::Long(0) ) );
                    aOld.AddWidth(rLR.GetRight() );
                }
            }
            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().
            if ( (!Lower() || !Lower()->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::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.
        if ( !pFrame->IsLocked() && !pFrame->IsColLocked() &&
             pFrame->Lower() && pFrame->Lower()->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
        if ( Lower() && Lower()->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
        int nLoopControlRuns = 0;
        // tdf#152106 loop control for multi-column sections
        int nLoopControlRunsInMultiCol = 0;
        const int nLoopControlMax = 20;
        const SwFrame* pLoopControlCond = nullptr;
 
        SwFrame* pLast;
        do
        {
            pLast = pFrame;
            bool const wasFrameLowerOfLay(pLay->IsAnLower(pFrame));
            if( pFrame->IsVertical() ?
                ( pFrame->GetUpper()->getFramePrintArea().Height() != pFrame->getFrameArea().Height() )
                : ( pFrame->GetUpper()->getFramePrintArea().Width() != pFrame->getFrameArea().Width() ) )
            {
                pFrame->Prepare( PrepareHint::FixSizeChanged );
                pFrame->InvalidateSize_();
            }
 
            if ( pFrame->IsTabFrame() )
            {
                static_cast<SwTabFrame*>(pFrame)->m_bCalcLowers = true;
                // #i18103# - lock move backward of follow table,
                // if no section content is formatted or follow table belongs
                // to the section, which content is formatted.
                if ( static_cast<SwTabFrame*>(pFrame)->IsFollow() &&
                     ( !pSect || pSect == pFrame->FindSctFrame() ) )
                {
                    static_cast<SwTabFrame*>(pFrame)->m_bLockBackMove = true;
                }
            }
 
            {
                SwFrameDeleteGuard aDeletePageGuard(pSect ? pSect->FindPageFrame() : nullptr);
                SwFrameDeleteGuard aDeleteGuard(pSect);
                pFrame->Calc(pRenderContext);
            }
 
            // #i11760# - reset control flag for follow format.
            if ( pFrame->IsTextFrame() )
            {
                static_cast<SwTextFrame*>(pFrame)->AllowFollowFormat();
            }
 
            // The keep-attribute can cause the position
            // of the prev to be invalid:
            // Do not consider invalid previous frame
            // due to its keep-attribute, if current frame is a follow or is locked.
            // #i44049# - do not consider invalid previous
            // frame due to its keep-attribute, if it can't move forward.
            // #i57765# - do not consider invalid previous
            // frame, if current frame has a column/page break before attribute.
            SwFrame* pTmpPrev = pFrame->FindPrev();
            SwFlowFrame* pTmpPrevFlowFrame = pTmpPrev && pTmpPrev->IsFlowFrame() ? SwFlowFrame::CastFlowFrame(pTmpPrev) : nullptr;
            SwFlowFrame* pTmpFlowFrame     = pFrame->IsFlowFrame() ? SwFlowFrame::CastFlowFrame(pFrame) : nullptr;
 
            bool bPrevInvalid = pTmpPrevFlowFrame && pTmpFlowFrame &&
                               !pTmpFlowFrame->IsFollow() &&
                               !StackHack::IsLocked() && // #i76382#
                               !pTmpFlowFrame->IsJoinLocked() &&
                               !pTmpPrev->isFrameAreaPositionValid() &&
                                pLay->IsAnLower( pTmpPrev ) &&
                                pTmpPrevFlowFrame->IsKeep(pTmpPrev->GetAttrSet()->GetKeep(), pTmpPrev->GetBreakItem()) &&
                                pTmpPrevFlowFrame->IsKeepFwdMoveAllowed();
 
            // format floating screen objects anchored to the frame.
            if ( !bPrevInvalid && pFrame->GetDrawObjs() && pLay->IsAnLower( pFrame ) )
            {
                bool bAgain = false;
                bool bRestartLayoutProcess = false;
                size_t nCnt = pFrame->GetDrawObjs()->size();
                size_t i = 0;
                while ( i < nCnt )
                {
                    // pFrame can move to a different page in FormatObj()
                    SwPageFrame *const pPageFrame = pFrame->FindPageFrame();
 
                    // #i28701#
                    SwAnchoredObject* pAnchoredObj = (*pFrame->GetDrawObjs())[i];
                    assert(pAnchoredObj);
 
                    // determine if anchored object has to be
                    // formatted and, in case, format it
                    if ( !pAnchoredObj->PositionLocked() && pAnchoredObj->IsFormatPossible() )
                    {
                        // #i43737# - no invalidation of
                        // anchored object needed - causes loops for as-character
                        // anchored objects.
                        //pAnchoredObj->InvalidateObjPos();
                        SwRect aRect( pAnchoredObj->GetObjRect() );
 
                        SwFrame* pAnchorFrame = pFrame;
                        SwPageFrame* pAnchorPageFrame = pPageFrame;
                        if (SwFlyFrame* pFlyFrame = pAnchoredObj->DynCastFlyFrame())
                        {
                            if (pFlyFrame->IsFlySplitAllowed())
                            {
                                // Split flys are at-para anchored, but the follow fly's anchor char
                                // frame is not the master frame but can be also a follow of pFrame.
                                SwTextFrame* pAnchorCharFrame = pFlyFrame->FindAnchorCharFrame();
                                if (pAnchorCharFrame)
                                {
                                    // Found an anchor char frame, update the anchor frame and the
                                    // anchor page frame accordingly.
                                    pAnchorFrame = pAnchorCharFrame;
                                    pAnchorPageFrame = pAnchorCharFrame->FindPageFrame();
                                }
                            }
                        }
 
                        if (!SwObjectFormatter::FormatObj(*pAnchoredObj, pAnchorFrame, pAnchorPageFrame,
                                rShell.Imp()->IsAction() ? &rShell.Imp()->GetLayAction() : nullptr))
                        {
                            if (rShell.Imp()->IsAction() && rShell.Imp()->GetLayAction().IsAgain())
                            {   // tdf#159015 will always fail, don't loop
                                return;
                            }
                            bRestartLayoutProcess = true;
                            break;
                        }
                        // #i3317# - restart layout process,
                        // if the position of the anchored object is locked now.
                        if ( pAnchoredObj->PositionLocked() )
                        {
                            bRestartLayoutProcess = true;
                            break;
                        }
 
                        if ( aRect != pAnchoredObj->GetObjRect() )
                        {
                            bAgain = true;
                            if ( pAgainObj2 == pAnchoredObj )
                            {
                                OSL_FAIL( "::CalcContent(..) - loop detected, perform attribute changes to avoid the loop" );
                                // Prevent oscillation
                                SwFrameFormat* pFormat = pAnchoredObj->GetFrameFormat();
                                SwFormatSurround aAttr( pFormat->GetSurround() );
                                if( css::text::WrapTextMode_THROUGH != aAttr.GetSurround() )
                                {
                                    // When on auto position, we can only set it to
                                    // flow through
                                    if ((pFormat->GetAnchor().GetAnchorId() ==
                                            RndStdIds::FLY_AT_CHAR) &&
                                        (css::text::WrapTextMode_PARALLEL ==
                                            aAttr.GetSurround()))
                                    {
                                        aAttr.SetSurround( css::text::WrapTextMode_THROUGH );
                                    }
                                    else
                                    {
                                        aAttr.SetSurround( css::text::WrapTextMode_PARALLEL );
                                    }
                                    pFormat->LockModify();
                                    pFormat->SetFormatAttr( aAttr );
                                    pFormat->UnlockModify();
                                }
                            }
                            else
                            {
                                if ( pAgainObj1 == pAnchoredObj )
                                    pAgainObj2 = pAnchoredObj;
                                pAgainObj1 = pAnchoredObj;
                            }
                        }
 
                        if ( !pFrame->GetDrawObjs() )
                            break;
                        if ( pFrame->GetDrawObjs()->size() < nCnt )
                        {
                            --nCnt;
                            // Do not increment index, in this case
                            continue;
                        }
                    }
                    ++i;
                }
 
                // #i28701# - restart layout process, if
                // requested by floating screen object formatting
                if (bRestartLayoutProcess
                    // tdf#152106 loop control in multi-column sections to avoid of freezing
                    && nLoopControlRunsInMultiCol < nLoopControlMax
                    // tdf#142080 if it was already on next page, and still is,
                    // ignore restart, as restart could cause infinite loop
                    && (wasFrameLowerOfLay || pLay->IsAnLower(pFrame)))
                {
                    bool bIsMultiColumn = pSect && pSect->GetSection() && pSect->Lower() &&
                            pSect->Lower()->IsColumnFrame() && pSect->Lower()->GetNext();
                    if ( bIsMultiColumn )
                        ++nLoopControlRunsInMultiCol;
                    pFrame = pLay->ContainsAny();
                    pAgainObj1 = nullptr;
                    pAgainObj2 = nullptr;
                    continue;
                }
 
                // #i28701# - format anchor frame after its objects
                // are formatted, if the wrapping style influence has to be considered.
                if ( pLay->GetFormat()->getIDocumentSettingAccess().get(DocumentSettingId::CONSIDER_WRAP_ON_OBJECT_POSITION) )
                {
                    pFrame->Calc(pRenderContext);
                }
 
                if ( bAgain )
                {
                    pFrame = pLay->ContainsContent();
                    if ( pFrame && pFrame->IsInTab() )
                        pFrame = pFrame->FindTabFrame();
                    if( pFrame && pFrame->IsInSct() )
                    {
                        SwSectionFrame* pTmp = pFrame->FindSctFrame();
                        if( pTmp != pLay && pLay->IsAnLower( pTmp ) )
                            pFrame = pTmp;
                    }
 
                    if ( pFrame == pLoopControlCond )
                        ++nLoopControlRuns;
                    else
                    {
                        nLoopControlRuns = 0;
                        pLoopControlCond = pFrame;
                    }
 
                    if ( nLoopControlRuns < nLoopControlMax )
                        continue;
 
                    OSL_FAIL( "LoopControl in CalcContent" );
                }
            }
            if ( pFrame->IsTabFrame() )
            {
                if (static_cast<SwTabFrame*>(pFrame)->m_bLockBackMove)
                {
                    assert(static_cast<SwTabFrame*>(pFrame)->IsFollow());
                    static_cast<SwTabFrame*>(pFrame)->m_bLockBackMove = false;
                    // tdf#150606 encourage it to move back in FormatLayout()
                    if (static_cast<SwTabFrame*>(pFrame)->m_bWantBackMove)
                    {
                        static_cast<SwTabFrame*>(pFrame)->m_bWantBackMove = false;
                        pFrame->InvalidatePos();
                    }
                }
            }
 
            pFrame = bPrevInvalid ? pTmpPrev : pFrame->FindNext();
            if( !bPrevInvalid && pFrame && pFrame->IsSctFrame() && pSect )
            {
                // Empty SectionFrames could be present here
                while( pFrame && pFrame->IsSctFrame() && !static_cast<SwSectionFrame*>(pFrame)->GetSection() )
                    pFrame = pFrame->FindNext();
 
                // If FindNext returns the Follow of the original Area, we want to
                // continue with this content as long as it flows back.
                if( pFrame && pFrame->IsSctFrame() && ( pFrame == pSect->GetFollow() ||
                    static_cast<SwSectionFrame*>(pFrame)->IsAnFollow( pSect ) ) )
                {
                    pFrame = static_cast<SwSectionFrame*>(pFrame)->ContainsAny();
                    if( pFrame )
                        pFrame->InvalidatePos_();
                }
            }
          // Stay in the pLay.
          // Except for SectionFrames with Follow: the first ContentFrame of the
          // Follow will be formatted, so that it gets a chance to move back
          // into the pLay.  Continue as long as these Frames land in pLay.
        } while ( pFrame &&
                  ( pLay->IsAnLower( pFrame ) ||
                    ( pSect &&
                      ( ( pSect->HasFollow() &&
                          ( pLay->IsAnLower( pLast ) ||
                            ( pLast->IsInSct() &&
                              pLast->FindSctFrame()->IsAnFollow(pSect) ) ) &&
                          pSect->GetFollow()->IsAnLower( pFrame )  ) ||
                        ( pFrame->IsInSct() &&
                          pFrame->FindSctFrame()->IsAnFollow( pSect ) ) ) ) ) );
        if( pSect )
        {
            if( bCollect )
            {
                pLay->GetFormat()->GetDoc()->getIDocumentLayoutAccess().GetLayouter()->InsertEndnotes(pSect);
                pSect->CalcFootnoteContent();
            }
            if( pSect->HasFollow() )
            {
                SwSectionFrame* pNxt = pSect->GetFollow();
                while( pNxt && !pNxt->ContainsContent() )
                    pNxt = pNxt->GetFollow();
                if( pNxt )
                    pNxt->CalcFootnoteContent();
            }
            if( bCollect )
            {
                pFrame = pLay->ContainsAny();
                bCollect = false;
                if( pFrame )
                    continue;
            }
        }
        break;
    }
    while( true );
}
 
void SwFlyFrame::MakeObjPos()
{
    if ( isFrameAreaPositionValid() )
        return;
 
    vcl::RenderContext* pRenderContext = getRootFrame()->GetCurrShell()->GetOut();
    setFrameAreaPositionValid(true);
 
    // use new class to position object
    GetAnchorFrame()->Calc(pRenderContext);
    objectpositioning::SwToLayoutAnchoredObjectPosition
            aObjPositioning( *GetVirtDrawObj() );
    aObjPositioning.CalcPosition();
 
    // #i58280#
    // update relative position
    SetCurrRelPos( aObjPositioning.GetRelPos() );
 
    {
        SwRectFnSet aRectFnSet(GetAnchorFrame());
        SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
        aFrm.Pos( aObjPositioning.GetRelPos() );
        aFrm.Pos() += aRectFnSet.GetPos(GetAnchorFrame()->getFrameArea());
    }
 
    // #i69335#
    InvalidateObjRectWithSpaces();
}
 
void SwFlyFrame::MakePrtArea( const SwBorderAttrs &rAttrs )
{
    if ( !isFramePrintAreaValid() )
    {
        setFramePrintAreaValid(true);
 
        // consider vertical layout
        SwRectFnSet aRectFnSet(this);
        SwTwips nLeftLine = rAttrs.CalcLeftLine();
 
        // The fly frame may be partially outside the page, check for this case.
        SwPageFrame* pPageFrame = FindPageFrame();
        SwFrameFormat* pFormat = GetFormat();
        if (pPageFrame && pFormat)
        {
            const IDocumentSettingAccess& rIDSA = pFormat->getIDocumentSettingAccess();
            bool bDoNotCaptureDrawObjsOnPage = rIDSA.get(DocumentSettingId::DO_NOT_CAPTURE_DRAW_OBJS_ON_PAGE);
            bool bLRTB = pFormat->GetFrameDir().GetValue() == SvxFrameDirection::Horizontal_LR_TB;
            SwTwips nFlyLeft = getFrameArea().Left();
            SwTwips nPageLeft = pPageFrame->getFrameArea().Left();
            if (bDoNotCaptureDrawObjsOnPage && bLRTB && nFlyLeft < nPageLeft)
            {
                // It is outside: only start the left padding of the text inside the page frame,
                // when we're in Word compatibility mode.
                nLeftLine += (nPageLeft - nFlyLeft);
            }
        }
 
        aRectFnSet.SetXMargins( *this, nLeftLine,
                                        rAttrs.CalcRightLine() );
        aRectFnSet.SetYMargins( *this, rAttrs.CalcTopLine(),
                                        rAttrs.CalcBottomLine() );
    }
}
 
void SwFlyFrame::MakeContentPos( const SwBorderAttrs &rAttrs )
{
    if ( m_bValidContentPos )
        return;
 
    m_bValidContentPos = true;
 
    const SwTwips nUL = rAttrs.CalcTopLine()  + rAttrs.CalcBottomLine();
    Size aRelSize( CalcRel( GetFormat()->GetFrameSize() ) );
 
    SwRectFnSet aRectFnSet(this);
    tools::Long nMinHeight = 0;
    if( IsMinHeight() )
        nMinHeight = aRectFnSet.IsVert() ? aRelSize.Width() : aRelSize.Height();
 
    Point aNewContentPos = getFramePrintArea().Pos();
    const SdrTextVertAdjust nAdjust = GetFormat()->GetTextVertAdjust().GetValue();
 
    if( nAdjust != SDRTEXTVERTADJUST_TOP )
    {
        const SwTwips nContentHeight = CalcContentHeight(&rAttrs, nMinHeight, nUL);
        SwTwips nDiff = 0;
 
        if( nContentHeight != 0)
            nDiff = aRectFnSet.GetHeight(getFramePrintArea()) - nContentHeight;
 
        if( nDiff > 0 )
        {
            if( nAdjust == SDRTEXTVERTADJUST_CENTER )
            {
                if( aRectFnSet.IsVertL2R() )
                    aNewContentPos.setX(aNewContentPos.getX() + nDiff/2);
                else if( aRectFnSet.IsVert() )
                    aNewContentPos.setX(aNewContentPos.getX() - nDiff/2);
                else
                    aNewContentPos.setY(aNewContentPos.getY() + nDiff/2);
            }
            else if( nAdjust == SDRTEXTVERTADJUST_BOTTOM )
            {
                if( aRectFnSet.IsVertL2R() )
                    aNewContentPos.setX(aNewContentPos.getX() + nDiff);
                else if( aRectFnSet.IsVert() )
                    aNewContentPos.setX(aNewContentPos.getX() - nDiff);
                else
                    aNewContentPos.setY(aNewContentPos.getY() + nDiff);
            }
        }
    }
    if( aNewContentPos != ContentPos() )
    {
        ContentPos() = aNewContentPos;
        for( SwFrame *pFrame = Lower(); pFrame; pFrame = pFrame->GetNext())
        {
            pFrame->InvalidatePos();
        }
    }
 
}
 
void SwFlyFrame::InvalidateContentPos()
{
    m_bValidContentPos = false;
    Invalidate_();
}
 
void SwFlyFrame::SelectionHasChanged(SwFEShell* pShell)
{
    SwWrtShell* pWrtSh = dynamic_cast< SwWrtShell* >(pShell);
    if (pWrtSh == nullptr)
        return;
 
    UpdateUnfloatButton(pWrtSh, IsShowUnfloatButton(pWrtSh));
}
 
bool SwFlyFrame::IsShowUnfloatButton(SwWrtShell* pWrtSh) const
{
    if (pWrtSh == nullptr)
        return false;
 
    // In read only mode we don't allow unfloat operation
    if (pWrtSh->GetViewOptions()->IsReadonly())
        return false;
 
    const SdrObject *pObj = GetFrameFormat()->FindRealSdrObject();
    if (pObj == nullptr)
        return false;
 
    // SwFlyFrame itself can mean images, ole objects, etc, but we interested in actual text frames
    if (SwFEShell::GetObjCntType(*pObj) != OBJCNT_FLY)
        return false;
 
    // We show the button only for the selected text frame
    SwDrawView *pView = pWrtSh->Imp()->GetDrawView();
    if (pView == nullptr)
        return false;
 
    // Fly frame can be selected only alone
    if (pView->GetMarkedObjectList().GetMarkCount() != 1)
        return false;
 
    if(!pView->IsObjMarked(pObj))
        return false;
 
    // A frame is a floating table if there is only one table (and maybe some whitespaces) inside it
    int nTableCount = 0;
    const SwFrame* pLower = GetLower();
    const SwTabFrame* pTable = nullptr;
    while (pLower)
    {
        if (pLower->IsTabFrame())
        {
            pTable = static_cast<const SwTabFrame*>(pLower);
            ++nTableCount;
            if (nTableCount > 1 || pTable == nullptr)
                return false;
        }
 
        if (pLower->IsTextFrame())
        {
            const SwTextFrame* pTextFrame = static_cast<const SwTextFrame*>(pLower);
            if (!o3tl::trim(pTextFrame->GetText()).empty())
                return false;
        }
        pLower = pLower->GetNext();
    }
 
    if (nTableCount != 1 || pTable == nullptr)
        return false;
 
    // Show the unfold button only for multipage tables
    const SwBodyFrame *pBody = GetAnchorFrame()->FindBodyFrame();
    if (pBody == nullptr)
        return false;
 
    tools::Long nBodyHeight = pBody->getFrameArea().Height();
    tools::Long nTableHeight = pTable->getFrameArea().Height();
    tools::Long nFrameOffset = std::abs(GetAnchorFrame()->getFrameArea().Top() - pBody->getFrameArea().Top());
 
    return nBodyHeight < nTableHeight + nFrameOffset;
}
 
void SwFlyFrame::ActiveUnfloatButton(SwWrtShell* pWrtSh)
{
    SwEditWin& rEditWin = pWrtSh->GetView().GetEditWin();
    SwFrameControlsManager& rMngr = rEditWin.GetFrameControlsManager();
    SwFrameControlPtr pControl = rMngr.GetControl(FrameControlType::FloatingTable, this);
    if (pControl && pControl->GetIFacePtr())
    {
        pControl->GetIFacePtr()->GetButton()->clicked();
    }
}
 
void SwFlyFrame::UpdateUnfloatButton(SwWrtShell* pWrtSh, bool bShow) const
{
    if (pWrtSh == nullptr)
        return;
 
    SwEditWin& rEditWin = pWrtSh->GetView().GetEditWin();
    SwFrameControlsManager& rMngr = rEditWin.GetFrameControlsManager();
    Point aTopRightPixel = rEditWin.LogicToPixel( getFrameArea().TopRight() );
    rMngr.SetUnfloatTableButton(this, bShow,  aTopRightPixel);
}
 
SwFlyAtContentFrame* SwFlyFrame::DynCastFlyAtContentFrame()
{
    return IsFlyAtContentFrame() ? static_cast<SwFlyAtContentFrame*>(this) : nullptr;
}
 
SwTwips SwFlyFrame::Grow_(SwTwips nDist, SwResizeLimitReason& reason, bool bTst)
{
    if (!Lower())
    {
        reason = SwResizeLimitReason::Unspecified; // refusing because we have no content?
        return 0;
    }
    if (IsColLocked() || HasFixSize())
    {
        if (nDist <= 0 || !HasFixSize())
            reason = SwResizeLimitReason::Unspecified;
        else
            reason = GetNextLink() ? SwResizeLimitReason::FlowToFollow
                                   : SwResizeLimitReason::FixedSizeFrame;
        return 0;
    }
 
    SwRectFnSet aRectFnSet(this);
    SwTwips nSize = aRectFnSet.GetHeight(getFrameArea());
    if( nSize > 0 && nDist > ( LONG_MAX - nSize ) )
        nDist = LONG_MAX - nSize;
 
    if ( nDist <= 0 )
    {
        reason = SwResizeLimitReason::Unspecified;
        return 0;
    }
 
    if ( Lower()->IsColumnFrame() )
    {   // If it's a Column Frame, the Format takes control of the
        // resizing (due to the adjustment).
        if ( !bTst )
        {
            // #i28701# - unlock position of Writer fly frame
            UnlockPosition();
            InvalidatePos_();
            InvalidateSize();
        }
        reason = SwResizeLimitReason::BalancedColumns;
        return 0;
    }
 
    reason = SwResizeLimitReason::Unspecified;
 
    if (bTst)
    {
        // We're in test mode. Don't promise infinite growth for split flys, rather limit the
        // max size to the bottom of the upper.
        const SwFrame* pAnchor = GetAnchorFrame();
        if (SwFrame* pAnchorChar = FindAnchorCharFrame())
        {
            pAnchor = pAnchorChar;
        }
        if (pAnchor && IsFlySplitAllowed())
        {
            SwTwips nDeadline = GetFlyAnchorBottom(this, *pAnchor);
            SwTwips nTop = aRectFnSet.GetTop(getFrameArea());
            SwTwips nBottom = nTop + aRectFnSet.GetHeight(getFrameArea());
            // Calculate max grow and compare to the requested growth, adding to nDist may
            // overflow when it's LONG_MAX.
            SwTwips nMaxGrow = nDeadline - nBottom;
            if (nDist > nMaxGrow)
            {
                nDist = nMaxGrow;
                reason = SwResizeLimitReason::FlowToFollow;
            }
        }
        return nDist;
    }
 
    const SwRect aOld( GetObjRectWithSpaces() );
    InvalidateSize_();
    const bool bOldLock = m_bLocked;
    Unlock();
    if ( IsFlyFreeFrame() )
    {
        // #i37068# - no format of position here
        // and prevent move in method <CheckClip(..)>.
        // This is needed to prevent layout loop caused by nested
        // Writer fly frames - inner Writer fly frames format its
        // anchor, which grows/shrinks the outer Writer fly frame.
        // Note: position will be invalidated below.
        setFrameAreaPositionValid(true);
 
        // #i55416#
        // Suppress format of width for autowidth frame, because the
        // format of the width would call <SwTextFrame::CalcFitToContent()>
        // for the lower frame, which initiated this grow.
        const bool bOldFormatHeightOnly = m_bFormatHeightOnly;
        const SwFormatFrameSize& rFrameSz = GetFormat()->GetFrameSize();
        if ( rFrameSz.GetWidthSizeType() != SwFrameSize::Fixed )
        {
            m_bFormatHeightOnly = true;
        }
        SwViewShell* pSh = getRootFrame()->GetCurrShell();
        if (pSh)
        {
            static_cast<SwFlyFreeFrame*>(this)->SetNoMoveOnCheckClip( true );
            static_cast<SwFlyFreeFrame*>(this)->SwFlyFreeFrame::MakeAll(pSh->GetOut());
            static_cast<SwFlyFreeFrame*>(this)->SetNoMoveOnCheckClip( false );
        }
        // #i55416#
        if ( rFrameSz.GetWidthSizeType() != SwFrameSize::Fixed )
        {
            m_bFormatHeightOnly = bOldFormatHeightOnly;
        }
    }
    else
        MakeAll(getRootFrame()->GetCurrShell()->GetOut());
    InvalidateSize_();
    InvalidatePos();
    if ( bOldLock )
        Lock();
    SwRect aNew(GetObjRectWithSpaces());
    if (IsFlySplitAllowed() && aNew.Height() - aOld.Height() < nDist)
    {
        // We are allowed to split and the actual growth is less than the requested growth.
        const SwFrame* pAnchor = GetAnchorFrame();
        if (SwFrame* pAnchorChar = FindAnchorCharFrame())
        {
            pAnchor = pAnchorChar;
        }
        if (pAnchor)
        {
            SwTwips nDeadline = GetFlyAnchorBottom(this, *pAnchor);
            SwTwips nTop = aRectFnSet.GetTop(getFrameArea());
            SwTwips nBottom = nTop + aRectFnSet.GetHeight(getFrameArea());
            SwTwips nMaxGrow = nDeadline - nBottom;
            if (nDist > nMaxGrow)
            {
                // The requested growth is more than what we can provide, limit it.
                nDist = nMaxGrow;
                reason = SwResizeLimitReason::FlowToFollow;
            }
            // Grow & invalidate the size.
            SwTwips nRemaining = nDist - (aNew.Height() - aOld.Height());
            {
                SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                aRectFnSet.AddBottom(aFrm, nRemaining);
            }
            InvalidateObjRectWithSpaces();
            {
                // Margins are unchanged, so increase the print height similar to the frame
                // height.
                SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                aRectFnSet.AddBottom(aPrt, nRemaining );
            }
            aNew = GetObjRectWithSpaces();
        }
    }
    if ( aOld != aNew )
        ::Notify( this, FindPageFrame(), aOld );
    return aRectFnSet.GetHeight(aNew)-aRectFnSet.GetHeight(aOld);
}
 
SwTwips SwFlyFrame::Shrink_( SwTwips nDist, bool bTst )
{
    if( Lower() && !IsColLocked() && !HasFixSize() )
    {
        SwRectFnSet aRectFnSet(this);
        SwTwips nHeight = aRectFnSet.GetHeight(getFrameArea());
        if ( nDist > nHeight )
            nDist = nHeight;
 
        SwTwips nVal = nDist;
        if ( IsMinHeight() )
        {
            const SwFormatFrameSize& rFormatSize = GetFormat()->GetFrameSize();
            SwTwips nFormatHeight = aRectFnSet.IsVert() ? rFormatSize.GetWidth() : rFormatSize.GetHeight();
 
            nVal = std::min( nDist, nHeight - nFormatHeight );
        }
 
        if ( nVal <= 0 )
            return 0;
 
        if ( Lower()->IsColumnFrame() )
        {   // If it's a Column Frame, the Format takes control of the
            // resizing (due to the adjustment).
            if ( !bTst )
            {
                SwRect aOld( GetObjRectWithSpaces() );
 
                {
                    SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
                    aRectFnSet.SetHeight( aFrm, nHeight - nVal );
                }
 
                // #i68520#
                if ( nHeight - nVal != 0 )
                {
                    InvalidateObjRectWithSpaces();
                }
 
                nHeight = aRectFnSet.GetHeight(getFramePrintArea());
 
                {
                    SwFrameAreaDefinition::FramePrintAreaWriteAccess aPrt(*this);
                    aRectFnSet.SetHeight( aPrt, nHeight - nVal );
                }
 
                InvalidatePos_();
                InvalidateSize();
                ::Notify( this, FindPageFrame(), aOld );
                NotifyDrawObj();
                if ( GetAnchorFrame()->IsInFly() )
                    AnchorFrame()->FindFlyFrame()->Shrink( nDist, bTst );
            }
            return 0;
        }
 
        if ( !bTst )
        {
            const SwRect aOld( GetObjRectWithSpaces() );
            InvalidateSize_();
            const bool bOldLocked = m_bLocked;
            Unlock();
            if ( IsFlyFreeFrame() )
            {
                // #i37068# - no format of position here
                // and prevent move in method <CheckClip(..)>.
                // This is needed to prevent layout loop caused by nested
                // Writer fly frames - inner Writer fly frames format its
                // anchor, which grows/shrinks the outer Writer fly frame.
                // Note: position will be invalidated below.
                setFrameAreaPositionValid(true);
 
                // #i55416#
                // Suppress format of width for autowidth frame, because the
                // format of the width would call <SwTextFrame::CalcFitToContent()>
                // for the lower frame, which initiated this shrink.
                const bool bOldFormatHeightOnly = m_bFormatHeightOnly;
                const SwFormatFrameSize& rFrameSz = GetFormat()->GetFrameSize();
                if ( rFrameSz.GetWidthSizeType() != SwFrameSize::Fixed )
                {
                    m_bFormatHeightOnly = true;
                }
                static_cast<SwFlyFreeFrame*>(this)->SetNoMoveOnCheckClip( true );
                static_cast<SwFlyFreeFrame*>(this)->SwFlyFreeFrame::MakeAll(getRootFrame()->GetCurrShell()->GetOut());
                static_cast<SwFlyFreeFrame*>(this)->SetNoMoveOnCheckClip( false );
                // #i55416#
                if ( rFrameSz.GetWidthSizeType() != SwFrameSize::Fixed )
                {
                    m_bFormatHeightOnly = bOldFormatHeightOnly;
                }
            }
            else
                MakeAll(getRootFrame()->GetCurrShell()->GetOut());
            InvalidateSize_();
            InvalidatePos();
            if ( bOldLocked )
                Lock();
            const SwRect aNew( GetObjRectWithSpaces() );
            if ( aOld != aNew )
            {
                ::Notify( this, FindPageFrame(), aOld );
                if ( GetAnchorFrame()->IsInFly() )
                    AnchorFrame()->FindFlyFrame()->Shrink( nDist, bTst );
            }
            return aRectFnSet.GetHeight(aOld) -
                   aRectFnSet.GetHeight(aNew);
        }
        return nVal;
    }
    return 0;
}
 
bool SwFlyFrame::IsResizeValid(const SwBorderAttrs *pAttrs, Size aTargetSize)
{
    SwFormatFrameSize rFrameSz = GetFormat()->GetFrameSize();
    Size aFrameSize = rFrameSz.GetSize();
    bool bAutosizeHeight = !HasFixSize() && IsMinHeight();
    bool bAutosizeWidth =  !m_bFormatHeightOnly && rFrameSz.GetWidthSizeType() == SwFrameSize::Minimum;
 
    if (!bAutosizeHeight && !bAutosizeWidth)
        return true;
 
    bool bIsValidResize = true;
 
    /**
    if (either AutoSizeWidth or AutoSizeHeight, not both),
        if the autosize dimension goes smaller than min value and the other dimension changed
            return valid
        else
            remember invalid
    */
    tools::Long nMinFrameHeight = 0;
    if (bAutosizeHeight)
    {
        const SwTwips nUL = pAttrs->CalcTopLine()  + pAttrs->CalcBottomLine();
        rFrameSz.SetHeight(aTargetSize.Height());
        rFrameSz.SetWidth(aTargetSize.Width());
        Size aRelSize( CalcRel( rFrameSz ) );
 
        tools::Long nMinHeight = 0;
        SwRectFnSet aRectFnSet(this);
        nMinHeight = aRectFnSet.IsVert() ? aRelSize.Width() : aRelSize.Height();
        SwTwips nRemaining = CalcContentHeight(pAttrs, nMinHeight, nUL);
        nMinFrameHeight = nRemaining + nUL;
 
        if (nMinHeight < nMinFrameHeight)
        {
            bIsValidResize = false;
            // if height less than minHeight and width changed when not AutoSizeWidth
            if (!bAutosizeWidth && aTargetSize.Width() != aFrameSize.Width())
                return true;
        }
    }
 
    tools::Long nMinFrameWidth = 0;
    if (bAutosizeWidth)
    {
        const SwTwips nLR = pAttrs->CalcLeftLine() + pAttrs->CalcRightLine();
        const SwTwips nAutoWidth = lcl_CalcAutoWidth( *this );
        nMinFrameWidth = nAutoWidth + nLR;
 
        if (aTargetSize.Width() < nMinFrameWidth)
            bIsValidResize = false;
        if (!bAutosizeHeight && aTargetSize.Height() != aFrameSize.Height())
            return true;
    }
 
    // if not valid resize, and both AutoSizeWidth and AutoSizeHeight,
    // then consider resize is valid if any one of the dimensions was changed from its original size
    // (the frame's dimensions), and the destination dimension is a valid one.
    if (bAutosizeWidth && bAutosizeHeight && !bIsValidResize)
    {
        return (aTargetSize.Width() != aFrameSize.Width() && aTargetSize.Width() >= nMinFrameWidth) ||
            (aTargetSize.Height() != aFrameSize.Height() && aTargetSize.Height() >= nMinFrameHeight);
    }
 
    return bIsValidResize;
}
 
Size SwFlyFrame::ChgSize( const Size& aNewSize )
{
    // #i53298#
    // If the fly frame anchored at-paragraph or at-character contains an OLE
    // object, assure that the new size fits into the current clipping area
    // of the fly frame
    Size aAdjustedNewSize( aNewSize );
    {
        if ( dynamic_cast<SwFlyAtContentFrame*>(this) &&
             Lower() && dynamic_cast<SwNoTextFrame*>(Lower()) &&
             static_cast<SwNoTextFrame*>(Lower())->GetNode()->GetOLENode() )
        {
            SwRect aClipRect;
            ::CalcClipRect( GetVirtDrawObj(), aClipRect, false );
            if ( aAdjustedNewSize.Width() > aClipRect.Width() )
            {
                aAdjustedNewSize.setWidth( aClipRect.Width() );
            }
            if ( aAdjustedNewSize.Height() > aClipRect.Height() )
            {
                aAdjustedNewSize.setWidth( aClipRect.Height() );
            }
        }
    }
 
    if ( aAdjustedNewSize != getFrameArea().SSize() )
    {
        SwFrameFormat *pFormat = GetFormat();
        SwFormatFrameSize aSz( pFormat->GetFrameSize() );
        aSz.SetWidth( aAdjustedNewSize.Width() );
        aSz.SetHeight( aAdjustedNewSize.Height() );
        // go via the Doc for UNDO
        pFormat->GetDoc()->SetAttr( aSz, *pFormat );
        return aSz.GetSize();
    }
    else
        return getFrameArea().SSize();
}
 
bool SwFlyFrame::IsLowerOf( const SwLayoutFrame* pUpperFrame ) const
{
    OSL_ENSURE( GetAnchorFrame(), "8-( Fly is lost in Space." );
    const SwFrame* pFrame = GetAnchorFrame();
    do
    {
        if ( pFrame == pUpperFrame )
            return true;
        pFrame = pFrame->IsFlyFrame()
               ? static_cast<const SwFlyFrame*>(pFrame)->GetAnchorFrame()
               : pFrame->GetUpper();
    } while ( pFrame );
    return false;
}
 
void SwFlyFrame::Cut()
{
}
 
void SwFrame::AppendFly( SwFlyFrame *pNew )
{
    if (!m_pDrawObjs)
    {
        m_pDrawObjs.reset(new SwSortedObjs());
    }
    m_pDrawObjs->Insert( *pNew );
    pNew->ChgAnchorFrame( this );
 
    // Register at the page
    // If there's none present, register via SwPageFrame::PreparePage
    SwPageFrame* pPage = FindPageFrame();
    if ( pPage != nullptr )
    {
        pPage->AppendFlyToPage( pNew );
    }
}
 
void SwFrame::RemoveFly( SwFlyFrame *pToRemove )
{
    // Deregister from the page
    // Could already have happened, if the page was already destructed
    SwPageFrame *pPage = pToRemove->FindPageFrame();
    if ( pPage && pPage->GetSortedObjs() )
    {
        pPage->RemoveFlyFromPage( pToRemove );
    }
    // #i73201#
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    else
    {
        if ( pToRemove->IsAccessibleFrame() &&
             pToRemove->GetFormat() &&
             !pToRemove->IsFlyInContentFrame() )
        {
            SwRootFrame *pRootFrame = getRootFrame();
            if( pRootFrame && pRootFrame->IsAnyShellAccessible() )
            {
                SwViewShell *pVSh = pRootFrame->GetCurrShell();
                if( pVSh && pVSh->Imp() )
                {
                    pVSh->Imp()->DisposeAccessibleFrame( pToRemove );
                }
            }
        }
    }
#endif
 
    m_pDrawObjs->Remove(*pToRemove);
    if (!m_pDrawObjs->size())
    {
        m_pDrawObjs.reset();
    }
 
    pToRemove->ChgAnchorFrame( nullptr );
 
    if ( !pToRemove->IsFlyInContentFrame() && GetUpper() && IsInTab() )//MA_FLY_HEIGHT
        GetUpper()->InvalidateSize();
}
 
void SwFrame::AppendDrawObj( SwAnchoredObject& _rNewObj )
{
    assert(!m_pDrawObjs || m_pDrawObjs->is_sorted());
 
    if ( dynamic_cast<const SwAnchoredDrawObject*>( &_rNewObj) ==  nullptr )
    {
        OSL_FAIL( "SwFrame::AppendDrawObj(..) - anchored object of unexpected type -> object not appended" );
        return;
    }
 
    if ( dynamic_cast<const SwDrawVirtObj*>(_rNewObj.GetDrawObj()) ==  nullptr &&
         _rNewObj.GetAnchorFrame() && _rNewObj.GetAnchorFrame() != this )
    {
        assert(!m_pDrawObjs || m_pDrawObjs->is_sorted());
        // perform disconnect from layout, if 'master' drawing object is appended
        // to a new frame.
        if (SwDrawContact* pContact = static_cast<SwDrawContact*>(::GetUserCall( _rNewObj.GetDrawObj() )))
            pContact->DisconnectFromLayout( false );
        assert(!m_pDrawObjs || m_pDrawObjs->is_sorted());
    }
 
    if ( _rNewObj.GetAnchorFrame() != this )
    {
        if (!m_pDrawObjs)
        {
            m_pDrawObjs.reset(new SwSortedObjs());
        }
        m_pDrawObjs->Insert(_rNewObj);
        _rNewObj.ChgAnchorFrame( this );
    }
 
    // #i113730#
    // Assure the control objects and group objects containing controls are on the control layer
    if ( ::CheckControlLayer( _rNewObj.DrawObj() ) )
    {
        const IDocumentDrawModelAccess& rIDDMA = getIDocumentDrawModelAccess();
        const SdrLayerID aCurrentLayer(_rNewObj.DrawObj()->GetLayer());
        const SdrLayerID aControlLayerID(rIDDMA.GetControlsId());
        const SdrLayerID aInvisibleControlLayerID(rIDDMA.GetInvisibleControlsId());
 
        if(aCurrentLayer != aControlLayerID && aCurrentLayer != aInvisibleControlLayerID)
        {
            if ( aCurrentLayer == rIDDMA.GetInvisibleHellId() ||
                 aCurrentLayer == rIDDMA.GetInvisibleHeavenId() )
            {
                _rNewObj.DrawObj()->SetLayer(aInvisibleControlLayerID);
            }
            else
            {
                _rNewObj.DrawObj()->SetLayer(aControlLayerID);
            }
            //The layer is part of the key used to sort the obj, so update
            //its position if the layer changed.
            m_pDrawObjs->Update(_rNewObj);
        }
    }
 
    // no direct positioning needed, but invalidate the drawing object position
    _rNewObj.InvalidateObjPos();
 
    // register at page frame
    SwPageFrame* pPage = FindPageFrame();
    if ( pPage )
    {
        pPage->AppendDrawObjToPage( _rNewObj );
    }
 
    // Notify accessible layout.
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    SwViewShell* pSh = getRootFrame()->GetCurrShell();
    if( pSh )
    {
        SwRootFrame* pLayout = getRootFrame();
        if( pLayout && pLayout->IsAnyShellAccessible() )
        {
            pSh->Imp()->AddAccessibleObj( _rNewObj.GetDrawObj() );
        }
    }
#endif
 
    assert(!m_pDrawObjs || m_pDrawObjs->is_sorted());
}
 
void SwFrame::RemoveDrawObj( SwAnchoredObject& _rToRemoveObj )
{
    // Notify accessible layout.
#if !ENABLE_WASM_STRIP_ACCESSIBILITY
    if (!mbInDtor)
    {
        SwViewShell* pSh = getRootFrame()->GetCurrShell();
        if (pSh)
        {
            SwRootFrame* pLayout = getRootFrame();
            if (pLayout && pLayout->IsAnyShellAccessible())
                pSh->Imp()->DisposeAccessibleObj(_rToRemoveObj.GetDrawObj(), false);
        }
    }
#endif
 
    // deregister from page frame
    SwPageFrame* pPage = _rToRemoveObj.GetPageFrame();
    if ( pPage && pPage->GetSortedObjs() )
        pPage->RemoveDrawObjFromPage( _rToRemoveObj );
 
    m_pDrawObjs->Remove(_rToRemoveObj);
    if (!m_pDrawObjs->size())
    {
        m_pDrawObjs.reset();
    }
    _rToRemoveObj.ChgAnchorFrame( nullptr );
 
    assert(!m_pDrawObjs || m_pDrawObjs->is_sorted());
}
 
void SwFrame::InvalidateObjs( const bool _bNoInvaOfAsCharAnchoredObjs )
{
    if ( !GetDrawObjs() )
        return;
 
    // #i26945# - determine page the frame is on,
    // in order to check, if anchored object is registered at the same
    // page.
    const SwPageFrame* pPageFrame = FindPageFrame();
    // #i28701# - re-factoring
    for (SwAnchoredObject* pAnchoredObj : *GetDrawObjs())
    {
        if ( _bNoInvaOfAsCharAnchoredObjs &&
             (pAnchoredObj->GetFrameFormat()->GetAnchor().GetAnchorId()
                == RndStdIds::FLY_AS_CHAR) )
        {
            continue;
        }
        // #i26945# - no invalidation, if anchored object
        // isn't registered at the same page and instead is registered at
        // the page, where its anchor character text frame is on.
        if ( pAnchoredObj->GetPageFrame() &&
             pAnchoredObj->GetPageFrame() != pPageFrame )
        {
            SwTextFrame* pAnchorCharFrame = pAnchoredObj->FindAnchorCharFrame();
            if ( pAnchorCharFrame &&
                 pAnchoredObj->GetPageFrame() == pAnchorCharFrame->FindPageFrame() )
            {
                continue;
            }
            // #115759# - unlock its position, if anchored
            // object isn't registered at the page, where its anchor
            // character text frame is on, respectively if it has no
            // anchor character text frame.
            else
            {
                pAnchoredObj->UnlockPosition();
            }
        }
        // #i51474# - reset flag, that anchored object
        // has cleared environment, and unlock its position, if the anchored
        // object is registered at the same page as the anchor frame is on.
        if ( pAnchoredObj->ClearedEnvironment() &&
             pAnchoredObj->GetPageFrame() &&
             pAnchoredObj->GetPageFrame() == pPageFrame )
        {
            pAnchoredObj->UnlockPosition();
            pAnchoredObj->SetClearedEnvironment( false );
        }
        // distinguish between writer fly frames and drawing objects
        if ( auto pFly = pAnchoredObj->DynCastFlyFrame() )
        {
            pFly->Invalidate_();
            pFly->InvalidatePos_();
        }
        else
        {
            pAnchoredObj->InvalidateObjPos();
        }
    } // end of loop on objects, which are connected to the frame
}
 
// #i26945# - correct check, if anchored object is a lower
// of the layout frame. E.g., anchor character text frame can be a follow text
// frame.
// #i44016# - add parameter <_bUnlockPosOfObjs> to
// force an unlockposition call for the lower objects.
void SwLayoutFrame::NotifyLowerObjs( const bool _bUnlockPosOfObjs )
{
    // invalidate lower floating screen objects
    SwPageFrame* pPageFrame = FindPageFrame();
    if ( !(pPageFrame && pPageFrame->GetSortedObjs()) )
        return;
 
    SwSortedObjs& rObjs = *(pPageFrame->GetSortedObjs());
    for (SwAnchoredObject* pObj : rObjs)
    {
        // #i26945# - check if anchored object is a lower
        // of the layout frame is changed to check, if its anchor frame
        // is a lower of the layout frame.
        // Determine the anchor frame - usually it's the anchor frame,
        // for at-character/as-character anchored objects the anchor character
        // text frame is taken.
        const SwFrame* pAnchorFrame = pObj->GetAnchorFrameContainingAnchPos();
        if ( auto pFly = pObj->DynCastFlyFrame() )
        {
            if ( pFly->getFrameArea().Left() == FAR_AWAY )
                continue;
 
            if ( pFly->IsAnLower( this ) )
                continue;
 
            // #i26945# - use <pAnchorFrame> to check, if
            // fly frame is lower of layout frame resp. if fly frame is
            // at a different page registered as its anchor frame is on.
            const bool bLow = IsAnLower( pAnchorFrame );
            if ( bLow || pAnchorFrame->FindPageFrame() != pPageFrame )
            {
                pFly->Invalidate_( pPageFrame );
                if ( !bLow || pFly->IsFlyAtContentFrame() )
                {
                    // #i44016#
                    if ( _bUnlockPosOfObjs )
                    {
                        pFly->UnlockPosition();
                    }
                    pFly->InvalidatePos_();
                }
                else
                    pFly->InvalidatePrt_();
            }
        }
        else
        {
            assert( dynamic_cast<const SwAnchoredDrawObject*>( pObj) &&
                    "<SwLayoutFrame::NotifyFlys() - anchored object of unexpected type" );
            // tdf#156728 invalidate fly positioned dependent on header/footer size
            bool isPositionedByHF(false);
            if (IsHeaderFrame() || IsFooterFrame())
            {
                auto const nO(pObj->GetFrameFormat()->GetVertOrient().GetRelationOrient());
                if (nO == text::RelOrientation::PAGE_PRINT_AREA
                    || nO == text::RelOrientation::PAGE_PRINT_AREA_BOTTOM
                    || nO == text::RelOrientation::PAGE_PRINT_AREA_TOP)
                {
                    isPositionedByHF = true;
                }
            }
            // #i26945# - use <pAnchorFrame> to check, if
            // fly frame is lower of layout frame resp. if fly frame is
            // at a different page registered as its anchor frame is on.
            if ( IsAnLower( pAnchorFrame ) ||
                 isPositionedByHF ||
                 pAnchorFrame->FindPageFrame() != pPageFrame )
            {
                // #i44016#
                if ( _bUnlockPosOfObjs )
                {
                    pObj->UnlockPosition();
                }
                pObj->InvalidateObjPos();
            }
        }
    }
}
 
void SwFlyFrame::NotifyDrawObj()
{
    SwVirtFlyDrawObj* pObj = GetVirtDrawObj();
    pObj->SetRect();
    pObj->SetBoundAndSnapRectsDirty();
    pObj->SetChanged();
    pObj->BroadcastObjectChange();
 
    if ( GetFormat()->GetSurround().IsContour() )
    {
        ClrContourCache( pObj );
    }
    else if(IsFlyFreeFrame() && static_cast< const SwFlyFreeFrame* >(this)->supportsAutoContour())
    {
        // RotateFlyFrame3: Also need to clear when changes happen
        // Caution: isTransformableSwFrame is already reset when resetting rotation, so
        // *additionally* reset in SwFlyFreeFrame::MakeAll when no more rotation
        ClrContourCache( pObj );
    }
}
 
Size SwFlyFrame::CalcRel( const SwFormatFrameSize &rSz ) const
{
    Size aRet( rSz.GetSize() );
 
    const SwFrame *pRel = IsFlyLayFrame() ? GetAnchorFrame() : GetAnchorFrame()->GetUpper();
    if( pRel ) // LAYER_IMPL
    {
        tools::Long nRelWidth = LONG_MAX, nRelHeight = LONG_MAX;
        const SwViewShell *pSh = getRootFrame()->GetCurrShell();
        if ( ( pRel->IsBodyFrame() || pRel->IsPageFrame() ) &&
             pSh && pSh->GetViewOptions()->getBrowseMode() &&
             pSh->VisArea().HasArea() )
        {
            nRelWidth  = pSh->GetBrowseWidth();
            nRelHeight = pSh->VisArea().Height();
            Size aBorder = pSh->GetOut()->PixelToLogic( pSh->GetBrowseBorder() );
            nRelWidth  = std::min( nRelWidth,  pRel->getFramePrintArea().Width() );
            nRelHeight -= 2*aBorder.Height();
            nRelHeight = std::min( nRelHeight, pRel->getFramePrintArea().Height() );
        }
 
        // At the moment only the "== PAGE_FRAME" and "!= PAGE_FRAME" cases are handled.
        // When size is a relative to page size, ignore size of SwBodyFrame.
        if (rSz.GetWidthPercentRelation() != text::RelOrientation::PAGE_FRAME)
            nRelWidth  = std::min( nRelWidth,  pRel->getFramePrintArea().Width() );
        else if ( pRel->IsPageFrame() )
            nRelWidth  = std::min( nRelWidth,  pRel->getFrameArea().Width() );
 
        if (rSz.GetHeightPercentRelation() != text::RelOrientation::PAGE_FRAME)
            nRelHeight = std::min( nRelHeight, pRel->getFramePrintArea().Height() );
        else if ( pRel->IsPageFrame() )
            nRelHeight = std::min( nRelHeight, pRel->getFrameArea().Height() );
 
        if( !pRel->IsPageFrame() )
        {
            const SwPageFrame* pPage = FindPageFrame();
            if( pPage )
            {
                if (rSz.GetWidthPercentRelation() == text::RelOrientation::PAGE_FRAME)
                    // Ignore margins of pPage.
                    nRelWidth  = std::min( nRelWidth,  pPage->getFrameArea().Width() );
                else
                    nRelWidth  = std::min( nRelWidth,  pPage->getFramePrintArea().Width() );
                if (rSz.GetHeightPercentRelation() == text::RelOrientation::PAGE_FRAME)
                    // Ignore margins of pPage.
                    nRelHeight = std::min( nRelHeight, pPage->getFrameArea().Height() );
                else
                    nRelHeight = std::min( nRelHeight, pPage->getFramePrintArea().Height() );
            }
        }
 
        if ( rSz.GetWidthPercent() && rSz.GetWidthPercent() != SwFormatFrameSize::SYNCED )
            aRet.setWidth(rtl::math::round(double(nRelWidth) * rSz.GetWidthPercent() / 100));
        if ( rSz.GetHeightPercent() && rSz.GetHeightPercent() != SwFormatFrameSize::SYNCED )
            aRet.setHeight(rtl::math::round(double(nRelHeight) * rSz.GetHeightPercent() / 100));
 
        if ( rSz.GetHeight() && rSz.GetWidthPercent() == SwFormatFrameSize::SYNCED )
        {
            aRet.setWidth( aRet.Width() * ( aRet.Height()) );
            aRet.setWidth( aRet.Width() / ( rSz.GetHeight()) );
        }
        else if ( rSz.GetWidth() && rSz.GetHeightPercent() == SwFormatFrameSize::SYNCED )
        {
            aRet.setHeight( aRet.Height() * ( aRet.Width()) );
            aRet.setHeight( aRet.Height() / ( rSz.GetWidth()) );
        }
    }
    return aRet;
}
 
static SwTwips lcl_CalcAutoWidth( const SwLayoutFrame& rFrame )
{
    SwTwips nRet = 0;
    SwTwips nMin = 0;
    const SwFrame* pFrame = rFrame.Lower();
 
    // No autowidth defined for columned frames
    if ( !pFrame || pFrame->IsColumnFrame() )
        return nRet;
 
    int nParagraphCount = 0;
    while ( pFrame )
    {
        nParagraphCount++;
        if ( pFrame->IsSctFrame() )
        {
            nMin = lcl_CalcAutoWidth( *static_cast<const SwSectionFrame*>(pFrame) );
        }
        if ( pFrame->IsTextFrame() )
        {
            nMin = const_cast<SwTextFrame*>(static_cast<const SwTextFrame*>(pFrame))->CalcFitToContent();
            auto const& rParaSet(static_cast<const SwTextFrame*>(pFrame)->GetTextNodeForParaProps()->GetSwAttrSet());
            SvxFirstLineIndentItem const& rFirstLine(rParaSet.GetFirstLineIndent());
            SvxTextLeftMarginItem const& rLeftMargin(rParaSet.GetTextLeftMargin());
            SvxRightMarginItem const& rRightMargin(rParaSet.GetRightMargin());
            if (!static_cast<const SwTextFrame*>(pFrame)->IsLocked())
            {
                nMin += rRightMargin.GetRight() + rLeftMargin.GetTextLeft()
                        + rFirstLine.GetTextFirstLineOffset();
            }
        }
        else if ( pFrame->IsTabFrame() )
        {
            const SwFormatFrameSize& rTableFormatSz = static_cast<const SwTabFrame*>(pFrame)->GetTable()->GetFrameFormat()->GetFrameSize();
            if ( USHRT_MAX == rTableFormatSz.GetSize().Width() ||
                 text::HoriOrientation::NONE == static_cast<const SwTabFrame*>(pFrame)->GetFormat()->GetHoriOrient().GetHoriOrient() )
            {
                const SwPageFrame* pPage = rFrame.FindPageFrame();
                // auto width table
                nMin = pFrame->GetUpper()->IsVertical() ?
                    pPage->getFramePrintArea().Height() :
                    pPage->getFramePrintArea().Width();
            }
            else
            {
                nMin = rTableFormatSz.GetSize().Width();
            }
        }
 
        if ( nMin > nRet )
            nRet = nMin;
 
        pFrame = pFrame->GetNext();
    }
 
    // tdf#124423 In Microsoft compatibility mode: widen the frame to max (PrintArea of the frame it anchored to) if it contains at least 2 paragraphs,
    // or 1 paragraph wider than its parent area.
    if (rFrame.GetFormat()->getIDocumentSettingAccess().get(DocumentSettingId::FRAME_AUTOWIDTH_WITH_MORE_PARA))
    {
        const SwFrame* pFrameRect = rFrame.IsFlyFrame() ? static_cast<const SwFlyFrame*>(&rFrame)->GetAnchorFrame() : rFrame.Lower()->FindPageFrame();
        SwTwips nParentWidth = rFrame.IsVertical() ? pFrameRect->getFramePrintArea().Height() : pFrameRect->getFramePrintArea().Width();
        if (nParagraphCount > 1 || nRet > nParentWidth)
        {
            return nParentWidth;
        }
    }
 
    return nRet;
}
 
///  #i13147# -  If called for paint and the <SwNoTextFrame> contains
/// a graphic, load of intrinsic graphic has to be avoided.
bool SwFlyFrame::GetContour( tools::PolyPolygon&   rContour,
                           const bool _bForPaint ) const
{
    vcl::RenderContext* pRenderContext = getRootFrame()->GetCurrShell()->GetOut();
    bool bRet = false;
    const bool bIsCandidate(Lower() && Lower()->IsNoTextFrame());
 
    if(bIsCandidate)
    {
        if(GetFormat()->GetSurround().IsContour())
        {
            SwNoTextNode *pNd = const_cast<SwNoTextNode*>(static_cast<const SwNoTextNode*>(static_cast<const SwNoTextFrame*>(Lower())->GetNode()));
            // #i13147# - determine <GraphicObject> instead of <Graphic>
            // in order to avoid load of graphic, if <SwNoTextNode> contains a graphic
            // node and method is called for paint.
            std::unique_ptr<GraphicObject> xTmpGrfObj;
            const GraphicObject* pGrfObj = nullptr;
            const SwGrfNode* pGrfNd = pNd->GetGrfNode();
            if ( pGrfNd && _bForPaint )
            {
                pGrfObj = &(pGrfNd->GetGrfObj());
            }
            else
            {
                xTmpGrfObj.reset(new GraphicObject(pNd->GetGraphic()));
                pGrfObj = xTmpGrfObj.get();
            }
            assert(pGrfObj && "SwFlyFrame::GetContour() - No Graphic/GraphicObject found at <SwNoTextNode>.");
            if (pGrfObj->GetType() != GraphicType::NONE)
            {
                if( !pNd->HasContour() )
                {
                    //#i13147# - no <CreateContour> for a graphic
                    // during paint. Thus, return (value of <bRet> should be <false>).
                    if ( pGrfNd && _bForPaint )
                    {
                        OSL_FAIL( "SwFlyFrame::GetContour() - No Contour found at <SwNoTextNode> during paint." );
                        return bRet;
                    }
                    pNd->CreateContour();
                }
                pNd->GetContour( rContour );
                // The Node holds the Polygon matching the original size of the graphic
                // We need to include the scaling here
                SwRect aClip;
                SwRect aOrig;
                Lower()->Calc(pRenderContext);
                static_cast<const SwNoTextFrame*>(Lower())->GetGrfArea( aClip, &aOrig );
                // #i13147# - copy method code <SvxContourDlg::ScaleContour(..)>
                // in order to avoid that graphic has to be loaded for contour scale.
                //SvxContourDlg::ScaleContour( rContour, aGrf, MapUnit::MapTwip, aOrig.SSize() );
                {
                    OutputDevice*   pOutDev = Application::GetDefaultDevice();
                    const MapMode   aDispMap( MapUnit::MapTwip );
                    const MapMode   aGrfMap( pGrfObj->GetPrefMapMode() );
                    const Size      aGrfSize( pGrfObj->GetPrefSize() );
                    Size            aOrgSize;
                    Point           aNewPoint;
                    bool            bPixelMap = aGrfMap.GetMapUnit() == MapUnit::MapPixel;
 
                    if ( bPixelMap )
                        aOrgSize = pOutDev->PixelToLogic( aGrfSize, aDispMap );
                    else
                        aOrgSize = OutputDevice::LogicToLogic( aGrfSize, aGrfMap, aDispMap );
 
                    if ( aOrgSize.Width() && aOrgSize.Height() )
                    {
                        double fScaleX = static_cast<double>(aOrig.Width()) / aOrgSize.Width();
                        double fScaleY = static_cast<double>(aOrig.Height()) / aOrgSize.Height();
 
                        for ( sal_uInt16 j = 0, nPolyCount = rContour.Count(); j < nPolyCount; j++ )
                        {
                            tools::Polygon& rPoly = rContour[ j ];
 
                            for ( sal_uInt16 i = 0, nCount = rPoly.GetSize(); i < nCount; i++ )
                            {
                                if ( bPixelMap )
                                    aNewPoint = pOutDev->PixelToLogic( rPoly[ i ], aDispMap  );
                                else
                                    aNewPoint = OutputDevice::LogicToLogic( rPoly[ i ], aGrfMap, aDispMap  );
 
                                rPoly[ i ] = Point( basegfx::fround<tools::Long>( aNewPoint.getX() * fScaleX ), basegfx::fround<tools::Long>( aNewPoint.getY() * fScaleY ) );
                            }
                        }
                    }
                }
                // destroy created <GraphicObject>.
                xTmpGrfObj.reset();
                rContour.Move( aOrig.Left(), aOrig.Top() );
                if( !aClip.Width() )
                    aClip.Width( 1 );
                if( !aClip.Height() )
                    aClip.Height( 1 );
                rContour.Clip( aClip.SVRect() );
                rContour.Optimize(PolyOptimizeFlags::CLOSE);
                bRet = true;
            }
        }
        else if (IsFlyFreeFrame())
        {
            const SwFlyFreeFrame* pSwFlyFreeFrame(static_cast< const SwFlyFreeFrame* >(this));
 
            if(nullptr != pSwFlyFreeFrame &&
                pSwFlyFreeFrame->supportsAutoContour() &&
                // isTransformableSwFrame already used in supportsAutoContour(), but
                // better check twice when it may get changed there...
                pSwFlyFreeFrame->isTransformableSwFrame())
            {
                // RotateFlyFrame: use untransformed SwFrame to allow text floating around.
                // Will be transformed below
                const TransformableSwFrame* pTransformableSwFrame(pSwFlyFreeFrame->getTransformableSwFrame());
                const SwRect aFrameArea(pTransformableSwFrame->getUntransformedFrameArea());
                rContour = tools::PolyPolygon(tools::Polygon(aFrameArea.SVRect()));
                bRet = (0 != rContour.Count());
            }
        }
 
        if(bRet && 0 != rContour.Count())
        {
            if (IsFlyFreeFrame() &&
                static_cast< const SwFlyFreeFrame* >(this)->isTransformableSwFrame())
            {
                // Need to adapt contour to transformation
                basegfx::B2DVector aScale, aTranslate;
                double fRotate, fShearX;
                getFrameAreaTransformation().decompose(aScale, aTranslate, fRotate, fShearX);
 
                if(!basegfx::fTools::equalZero(fRotate))
                {
                    basegfx::B2DPolyPolygon aSource(rContour.getB2DPolyPolygon());
                    const basegfx::B2DPoint aCenter(getFrameAreaTransformation() * basegfx::B2DPoint(0.5, 0.5));
                    const basegfx::B2DHomMatrix aRotateAroundCenter(
                        basegfx::utils::createRotateAroundPoint(
                            aCenter.getX(),
                            aCenter.getY(),
                            fRotate));
                    aSource.transform(aRotateAroundCenter);
                    rContour = tools::PolyPolygon(aSource);
                }
            }
        }
    }
 
    return bRet;
}
 
 
const SwVirtFlyDrawObj* SwFlyFrame::GetVirtDrawObj() const
{
    return static_cast<const SwVirtFlyDrawObj*>(GetDrawObj());
}
SwVirtFlyDrawObj* SwFlyFrame::GetVirtDrawObj()
{
    return static_cast<SwVirtFlyDrawObj*>(DrawObj());
}
 
// implementation of pure virtual method declared in
// base class <SwAnchoredObject>
 
void SwFlyFrame::InvalidateObjPos()
{
    InvalidatePos();
    // #i68520#
    InvalidateObjRectWithSpaces();
}
 
SwFrameFormat* SwFlyFrame::GetFrameFormat()
{
    OSL_ENSURE( GetFormat(),
            "<SwFlyFrame::GetFrameFormat()> - missing frame format -> crash." );
    return GetFormat();
}
const SwFrameFormat* SwFlyFrame::GetFrameFormat() const
{
    OSL_ENSURE( GetFormat(),
            "<SwFlyFrame::GetFrameFormat()> - missing frame format -> crash." );
    return GetFormat();
}
 
SwRect SwFlyFrame::GetObjRect() const
{
    return getFrameArea();
}
 
// #i70122#
// for Writer fly frames the bounding rectangle equals the object rectangles
SwRect SwFlyFrame::GetObjBoundRect() const
{
    return GetObjRect();
}
 
// #i68520#
bool SwFlyFrame::SetObjTop_( const SwTwips _nTop )
{
    const bool bChanged( getFrameArea().Pos().getY() != _nTop );
    SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
    aFrm.Pos().setY(_nTop);
 
    return bChanged;
}
bool SwFlyFrame::SetObjLeft_( const SwTwips _nLeft )
{
    const bool bChanged( getFrameArea().Pos().getX() != _nLeft );
    SwFrameAreaDefinition::FrameAreaWriteAccess aFrm(*this);
    aFrm.Pos().setX(_nLeft);
 
    return bChanged;
}
 
/** method to assure that anchored object is registered at the correct
    page frame
 
    OD 2004-07-02 #i28701#
*/
void SwFlyFrame::RegisterAtCorrectPage()
{
    // default behaviour is to do nothing.
}
 
void SwFlyFrame::RegisterAtPage(SwPageFrame &)
{
    // default behaviour is to do nothing.
}
 
/** method to determine, if a <MakeAll()> on the Writer fly frame is possible
 
    OD 2004-05-11 #i28701#
*/
bool SwFlyFrame::IsFormatPossible() const
{
    return SwAnchoredObject::IsFormatPossible() &&
           !IsLocked() && !IsColLocked();
}
 
void SwFlyFrame::GetAnchoredObjects( std::vector<SwAnchoredObject*>& aVector, const SwFormat& rFormat )
{
    SwIterator<SwFlyFrame,SwFormat> aIter( rFormat );
    for( SwFlyFrame* pFlyFrame = aIter.First(); pFlyFrame; pFlyFrame = aIter.Next() )
        aVector.push_back( pFlyFrame );
}
 
const SwFlyFrameFormat * SwFlyFrame::GetFormat() const
{
    return static_cast< const SwFlyFrameFormat * >( GetDep() );
}
 
SwFlyFrameFormat * SwFlyFrame::GetFormat()
{
    return static_cast< SwFlyFrameFormat * >( GetDep() );
}
 
void SwFlyFrame::dumpAsXml(xmlTextWriterPtr writer) const
{
    (void)xmlTextWriterStartElement(writer, reinterpret_cast<const xmlChar*>("fly"));
    dumpAsXmlAttributes(writer);
 
    SwLayoutFrame::dumpAsXml(writer);
 
    SwAnchoredObject::dumpAsXml(writer);
 
    (void)xmlTextWriterEndElement(writer);
}
 
void SwFlyFrame::Calc(vcl::RenderContext* pRenderContext) const
{
    if ( !m_bValidContentPos )
        const_cast<SwFlyFrame*>(this)->PrepareMake(pRenderContext);
    else
        SwLayoutFrame::Calc(pRenderContext);
}
 
SwTwips SwFlyFrame::CalcContentHeight(const SwBorderAttrs *pAttrs, const SwTwips nMinHeight, const SwTwips nUL)
{
    SwRectFnSet aRectFnSet(this);
    SwTwips nHeight = 0;
    if ( Lower() )
    {
        if ( Lower()->IsColumnFrame() )
        {
            FormatWidthCols( *pAttrs, nUL, nMinHeight );
            nHeight = aRectFnSet.GetHeight(Lower()->getFrameArea());
        }
        else
        {
            SwFrame *pFrame = Lower();
            while ( pFrame )
            {
                nHeight += aRectFnSet.GetHeight(pFrame->getFrameArea());
                if( pFrame->IsTextFrame() && static_cast<SwTextFrame*>(pFrame)->IsUndersized() )
                // This TextFrame would like to be a bit larger
                    nHeight += static_cast<SwTextFrame*>(pFrame)->GetParHeight()
                            - aRectFnSet.GetHeight(pFrame->getFramePrintArea());
                else if( pFrame->IsSctFrame() && static_cast<SwSectionFrame*>(pFrame)->IsUndersized() )
                    nHeight += static_cast<SwSectionFrame*>(pFrame)->Undersize();
                pFrame = pFrame->GetNext();
            }
        }
        if ( GetDrawObjs() )
        {
            const size_t nCnt = GetDrawObjs()->size();
            SwTwips nTop = aRectFnSet.GetTop(getFrameArea());
            SwTwips nBorder = aRectFnSet.GetHeight(getFrameArea()) -
            aRectFnSet.GetHeight(getFramePrintArea());
            for ( size_t i = 0; i < nCnt; ++i )
            {
                SwAnchoredObject* pAnchoredObj = (*GetDrawObjs())[i];
                if ( auto pFly = pAnchoredObj->DynCastFlyFrame() )
                {
                    // consider only Writer fly frames, which follow the text flow.
                    if ( pFly->IsFlyLayFrame() &&
                        pFly->getFrameArea().Top() != FAR_AWAY &&
                        pFly->GetFormat()->GetFollowTextFlow().GetValue() )
                    {
                        SwTwips nDist = -aRectFnSet.BottomDist( pFly->getFrameArea(), nTop );
                        if( nDist > nBorder + nHeight )
                            nHeight = nDist - nBorder;
                    }
                }
            }
        }
    }
    return nHeight;
}
 
const SwFormatAnchor* SwFlyFrame::GetAnchorFromPoolItem(const SfxPoolItem& rItem)
{
    switch(rItem.Which())
    {
        case RES_ATTRSET_CHG:
            return rItem.StaticWhichCast(RES_ATTRSET_CHG).GetChgSet()->GetItem(RES_ANCHOR, false);
        case RES_ANCHOR:
            return static_cast<const SwFormatAnchor*>(&rItem);
        default:
            return nullptr;
    }
}
 
const SwFlyFrame* SwFlyFrame::DynCastFlyFrame() const
{
    return this;
}
 
SwFlyFrame* SwFlyFrame::DynCastFlyFrame()
{
    return this;
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

V522 Dereferencing of the null pointer 'pAnchoredObj' might take place.

V530 The return value of function 'Union' is required to be utilized.

V530 The return value of function 'Union' is required to be utilized.

V1053 Calling the 'GetFormat' virtual function indirectly in the constructor may lead to unexpected result at runtime. Check lines: 'fly.cxx:229', 'fly.cxx:305', 'flyfrm.hxx:287'.

V547 Expression 'pOldSelFly' is always true.

V560 A part of conditional expression is always false: pTable == nullptr.

V560 A part of conditional expression is always true: nullptr != pSwFlyFreeFrame.

V1004 The 'pTmpPrev' pointer was used unsafely after it was verified against nullptr. Check lines: 1712, 1719.