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Diffstat (limited to 'sw/source/core/layout/flowfrm.cxx')
| -rw-r--r-- | sw/source/core/layout/flowfrm.cxx | 2665 |
1 files changed, 2665 insertions, 0 deletions
diff --git a/sw/source/core/layout/flowfrm.cxx b/sw/source/core/layout/flowfrm.cxx new file mode 100644 index 000000000..576e32d90 --- /dev/null +++ b/sw/source/core/layout/flowfrm.cxx @@ -0,0 +1,2665 @@ +/* -*- 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 <memory> +#include <sal/config.h> +#include <sal/log.hxx> +#include <svx/svdobj.hxx> + +#include <anchoredobject.hxx> +#include <bodyfrm.hxx> +#include <swtable.hxx> +#include <rootfrm.hxx> +#include <pagefrm.hxx> +#include <viewimp.hxx> +#include <viewopt.hxx> +#include <frmatr.hxx> +#include <frmtool.hxx> +#include <IDocumentFieldsAccess.hxx> +#include <editeng/formatbreakitem.hxx> +#include <editeng/keepitem.hxx> +#include <fmtanchr.hxx> +#include <fmtsrnd.hxx> +#include <fmtpdsc.hxx> +#include <editeng/ulspitem.hxx> +#include <tgrditem.hxx> +#include <txtftn.hxx> +#include <fmtftn.hxx> +#include <editeng/pgrditem.hxx> +#include <paratr.hxx> +#include <ftnfrm.hxx> +#include <txtfrm.hxx> +#include <notxtfrm.hxx> +#include <tabfrm.hxx> +#include <rowfrm.hxx> +#include <pagedesc.hxx> +#include <layact.hxx> +#include <flyfrm.hxx> +#include <sectfrm.hxx> +#include <section.hxx> +#include <dbg_lay.hxx> +#include <lineinfo.hxx> +#include <fmtclbl.hxx> +#include <sortedobjs.hxx> +#include <layouter.hxx> +#include <fmtfollowtextflow.hxx> +#include <calbck.hxx> +#include <IDocumentSettingAccess.hxx> +#include <IDocumentDrawModelAccess.hxx> +#include <pam.hxx> +#include <ndtxt.hxx> + +bool SwFlowFrame::m_bMoveBwdJump = false; + +SwFlowFrame::SwFlowFrame( SwFrame &rFrame ) : + m_rThis( rFrame ), + m_pFollow( nullptr ), + m_pPrecede( nullptr ), + m_bLockJoin( false ), + m_bUndersized( false ), + m_bFlyLock( false ) +{} + +SwFlowFrame::~SwFlowFrame() +{ + if (m_pFollow) + { + m_pFollow->m_pPrecede = nullptr; + } + if (m_pPrecede) + { + m_pPrecede->m_pFollow = nullptr; + } +} + +void SwFlowFrame::SetFollow(SwFlowFrame *const pFollow) +{ + if (m_pFollow) + { + assert(this == m_pFollow->m_pPrecede); + m_pFollow->m_pPrecede = nullptr; + } + m_pFollow = pFollow; + if (m_pFollow != nullptr) + { + if (m_pFollow->m_pPrecede) // re-chaining pFollow? + { + assert(m_pFollow == m_pFollow->m_pPrecede->m_pFollow); + m_pFollow->m_pPrecede->m_pFollow = nullptr; + } + m_pFollow->m_pPrecede = this; + } +} + +/// @return true if any follow has the JoinLocked flag +bool SwFlowFrame::HasLockedFollow() const +{ + const SwFlowFrame* pFrame = GetFollow(); + while( pFrame ) + { + if( pFrame->IsJoinLocked() ) + return true; + pFrame = pFrame->GetFollow(); + } + return false; +} + +bool SwFlowFrame::IsKeepFwdMoveAllowed( bool bIgnoreMyOwnKeepValue ) +{ + // If all the predecessors up to the first of the chain have + // the 'keep' attribute set, and the first of the chain's + // IsFwdMoveAllowed returns false, then we're not allowed to move. + SwFrame *pFrame = &m_rThis; + if ( !pFrame->IsInFootnote() ) { + if ( bIgnoreMyOwnKeepValue && pFrame->GetIndPrev() ) + pFrame = pFrame->GetIndPrev(); + do + { if ( pFrame->GetAttrSet()->GetKeep().GetValue() ) + pFrame = pFrame->GetIndPrev(); + else + return true; + } while ( pFrame ); + } + //See IsFwdMoveAllowed() + bool bRet = false; + if ( pFrame && pFrame->GetIndPrev() ) + bRet = true; + return bRet; +} + +void SwFlowFrame::CheckKeep() +{ + // Kick off the "last" predecessor with a 'keep' attribute, because + // it's possible for the whole troop to move back. + SwFrame *pPre = m_rThis.GetIndPrev(); + assert(pPre); + if( pPre->IsSctFrame() ) + { + SwFrame *pLast = static_cast<SwSectionFrame*>(pPre)->FindLastContent(); + if( pLast && pLast->FindSctFrame() == pPre ) + pPre = pLast; + else + return; + } + SwFrame* pTmp; + bool bKeep; + while ( (bKeep = pPre->GetAttrSet()->GetKeep().GetValue()) && + nullptr != ( pTmp = pPre->GetIndPrev() ) ) + { + if( pTmp->IsSctFrame() ) + { + SwFrame *pLast = static_cast<SwSectionFrame*>(pTmp)->FindLastContent(); + if( pLast && pLast->FindSctFrame() == pTmp ) + pTmp = pLast; + else + break; + } + pPre = pTmp; + } + if ( bKeep ) + pPre->InvalidatePos(); +} + +bool SwFlowFrame::IsKeep(SvxFormatKeepItem const& rKeep, + SvxFormatBreakItem const& rBreak, + bool const bCheckIfLastRowShouldKeep) const +{ + // 1. The keep attribute is ignored inside footnotes + // 2. For compatibility reasons, the keep attribute is + // ignored for frames inside table cells + // 3. If bBreakCheck is set to true, this function only checks + // if there are any break after attributes set at rAttrs + // or break before attributes set for the next content (or next table) + bool bKeep = bCheckIfLastRowShouldKeep || + ( !m_rThis.IsInFootnote() && + ( !m_rThis.IsInTab() || m_rThis.IsTabFrame() ) && + rKeep.GetValue() ); + + OSL_ENSURE( !bCheckIfLastRowShouldKeep || m_rThis.IsTabFrame(), + "IsKeep with bCheckIfLastRowShouldKeep should only be used for tabfrms" ); + + // Ignore keep attribute if there are break situations: + if ( bKeep ) + { + switch (rBreak.GetBreak()) + { + case SvxBreak::ColumnAfter: + case SvxBreak::ColumnBoth: + case SvxBreak::PageAfter: + case SvxBreak::PageBoth: + { + bKeep = false; + break; + } + default: break; + } + if ( bKeep ) + { + SwFrame *pNxt; + if( nullptr != (pNxt = m_rThis.FindNextCnt()) && + (!m_pFollow || pNxt != &m_pFollow->GetFrame())) + { + // The last row of a table only keeps with the next content + // it they are in the same section: + if ( bCheckIfLastRowShouldKeep ) + { + const SwSection* pThisSection = nullptr; + const SwSection* pNextSection = nullptr; + const SwSectionFrame* pThisSectionFrame = m_rThis.FindSctFrame(); + const SwSectionFrame* pNextSectionFrame = pNxt->FindSctFrame(); + + if ( pThisSectionFrame ) + pThisSection = pThisSectionFrame->GetSection(); + + if ( pNextSectionFrame ) + pNextSection = pNextSectionFrame->GetSection(); + + if ( pThisSection != pNextSection ) + bKeep = false; + } + + if ( bKeep ) + { + SvxFormatBreakItem const* pBreak; + SwFormatPageDesc const* pPageDesc; + SwTabFrame* pTab = pNxt->IsInTab() ? pNxt->FindTabFrame() : nullptr; + if (pTab && (!m_rThis.IsInTab() || m_rThis.FindTabFrame() != pTab)) + { + const SwAttrSet *const pSet = &pTab->GetFormat()->GetAttrSet(); + pBreak = &pSet->GetBreak(); + pPageDesc = &pSet->GetPageDesc(); + } + else + { + pBreak = &pNxt->GetBreakItem(); + pPageDesc = &pNxt->GetPageDescItem(); + } + + if (pPageDesc->GetPageDesc()) + bKeep = false; + else switch (pBreak->GetBreak()) + { + case SvxBreak::ColumnBefore: + case SvxBreak::ColumnBoth: + case SvxBreak::PageBefore: + case SvxBreak::PageBoth: + bKeep = false; + break; + default: break; + } + } + } + } + } + return bKeep; +} + +sal_uInt8 SwFlowFrame::BwdMoveNecessary( const SwPageFrame *pPage, const SwRect &rRect ) +{ + // The return value helps deciding whether we need to flow back (3), + // or whether we can use the good old WouldFit (0, 1), or if + // it's reasonable to relocate and test-format (2). + + // Bit 1 in this case means that there are objects anchored to myself, + // bit 2 means that I have to evade other objects. + + // If a SurroundObj that desires to be wrapped around overlaps with the + // Rect, it's required to flow (because we can't guess the relationships). + // However it's possible for a test formatting to happen. + // If the SurroundObj is a Fly and I'm a Lower, or the Fly is a Lower of + // mine, then it doesn't matter. + // If the SurroundObj is anchored in a character bound Fly, and I'm not + // a Lower of that character bound Fly myself, then the Fly doesn't matter. + + // If the object is anchored with me, i can ignore it, because + // it's likely that it will follow me with the flow. A test formatting is + // not allowed in that case, however! + sal_uInt8 nRet = 0; + SwFlowFrame *pTmp = this; + do + { // If there are objects hanging either on me or on a follow, we can't + // do a test formatting, because paragraph bound objects wouldn't + // be properly considered, and character bound objects shouldn't + // be test formatted at all. + if( pTmp->GetFrame().GetDrawObjs() ) + nRet = 1; + pTmp = pTmp->GetFollow(); + } while ( !nRet && pTmp ); + const SwSortedObjs *pObjs = pPage ? pPage->GetSortedObjs() : nullptr; + if (pObjs) + { + + const SwSortedObjs &rObjs = *pObjs; + sal_uLong nIndex = ULONG_MAX; + for ( size_t i = 0; nRet < 3 && i < rObjs.size(); ++i ) + { + + SwAnchoredObject* pObj = rObjs[i]; + const SwFrameFormat& rFormat = pObj->GetFrameFormat(); + const SwRect aRect( pObj->GetObjRect() ); + if ( aRect.IsOver( rRect ) && + rFormat.GetSurround().GetSurround() != css::text::WrapTextMode_THROUGH ) + { + if( m_rThis.IsLayoutFrame() && //Fly Lower of This? + Is_Lower_Of( &m_rThis, pObj->GetDrawObj() ) ) + continue; + if( auto pFly = dynamic_cast<const SwFlyFrame*>(pObj) ) + { + if ( pFly->IsAnLower( &m_rThis ) )//This Lower of Fly? + continue; + } + + const SwFrame* pAnchor = pObj->GetAnchorFrame(); + if ( pAnchor == &m_rThis ) + { + nRet |= 1; + continue; + } + + // Don't do this if the object is anchored behind me in the text + // flow, because then I wouldn't evade it. + if ( ::IsFrameInSameContext( pAnchor, &m_rThis ) ) + { + if ( rFormat.GetAnchor().GetAnchorId() == RndStdIds::FLY_AT_PARA ) + { + // The index of the other one can be retrieved using the anchor attribute. + sal_uLong nTmpIndex = rFormat.GetAnchor().GetContentAnchor()->nNode.GetIndex(); + // Now we're going to check whether the current paragraph before + // the anchor of the displacing object sits in the text. If this + // is the case, we don't try to evade it. + // The index is being determined via SwFormatAnchor, because it's + // getting quite expensive otherwise. + if( ULONG_MAX == nIndex ) + { + const SwNode *pNode; + if (m_rThis.IsTextFrame()) + pNode = static_cast<SwTextFrame&>(m_rThis).GetTextNodeFirst(); + else if (m_rThis.IsNoTextFrame()) + pNode = static_cast<SwNoTextFrame&>(m_rThis).GetNode(); + else if( m_rThis.IsSctFrame() ) + pNode = static_cast<SwSectionFormat*>(static_cast<SwSectionFrame&>(m_rThis). + GetFormat())->GetSectionNode(); + else + { + assert(!m_rThis.IsContentFrame()); + OSL_ENSURE( m_rThis.IsTabFrame(), "new FowFrame?" ); + pNode = static_cast<SwTabFrame&>(m_rThis).GetTable()-> + GetTabSortBoxes()[0]->GetSttNd()->FindTableNode(); + } + nIndex = pNode->GetIndex(); + } + if (nIndex < nTmpIndex && + (!m_rThis.IsTextFrame() || + !FrameContainsNode(static_cast<SwTextFrame&>(m_rThis), nTmpIndex))) + { + continue; + } + } + } + else + continue; + + nRet |= 2; + } + } + } + return nRet; +} + +/// A specialized form of Cut(), which relocates a whole chain (this and the following, +/// in particular). During this process, only the minimum operations and notifications are done. +SwLayoutFrame *SwFlowFrame::CutTree( SwFrame *pStart ) +{ + // Cut the Start and all the neighbours; they are chained together and + // a handle to the first one is returned. Residuals are invalidated + // as appropriate. + + SwLayoutFrame *pLay = pStart->GetUpper(); + if ( pLay->IsInFootnote() ) + pLay = pLay->FindFootnoteFrame(); + + // i#58846 + // <pPrepare( PrepareHint::QuoVadis )> only for frames in footnotes + if( pStart->IsInFootnote() ) + { + SwFrame* pTmp = pStart->GetIndPrev(); + if( pTmp ) + pTmp->Prepare( PrepareHint::QuoVadis ); + } + + // Just cut quickly and take care that we don't cause problems with the + // left-behinds. The pointers of the chain being cut can point who-knows where. + if ( pStart == pStart->GetUpper()->Lower() ) + pStart->GetUpper()->m_pLower = nullptr; + if ( pStart->GetPrev() ) + { + pStart->GetPrev()->mpNext = nullptr; + pStart->mpPrev = nullptr; + } + + if ( pLay->IsFootnoteFrame() ) + { + if ( !pLay->Lower() && !pLay->IsColLocked() && + !static_cast<SwFootnoteFrame*>(pLay)->IsBackMoveLocked() ) + { + // tdf#101821 don't delete it while iterating over it + if (!pLay->IsDeleteForbidden()) + { + pLay->Cut(); + SwFrame::DestroyFrame(pLay); + } + // else: assume there is code on the stack to clean up empty + // footnote frames + // (don't go into the else branch below, it produces a disconnected + // footnote with null upper that can be returned by + // SwFootnoteBossFrame::FindFootnote() causing null pointer deref + // in SwTextFrame::ConnectFootnote() + } + else + { + bool bUnlock = !static_cast<SwFootnoteFrame*>(pLay)->IsBackMoveLocked(); + static_cast<SwFootnoteFrame*>(pLay)->LockBackMove(); + pLay->InvalidateSize(); + pLay->Calc(pLay->getRootFrame()->GetCurrShell()->GetOut()); + SwContentFrame *pCnt = pLay->ContainsContent(); + while ( pCnt && pLay->IsAnLower( pCnt ) ) + { + // It's possible for the ContentFrame to be locked, and we don't want + // to end up in an endless page migration, so we're not even + // going to call Calc! + OSL_ENSURE( pCnt->IsTextFrame(), "The Graphic has landed." ); + if ( static_cast<SwTextFrame*>(pCnt)->IsLocked() || + static_cast<SwTextFrame*>(pCnt)->GetFollow() == pStart ) + break; + pCnt->Calc(pCnt->getRootFrame()->GetCurrShell()->GetOut()); + pCnt = pCnt->GetNextContentFrame(); + } + if( bUnlock ) + static_cast<SwFootnoteFrame*>(pLay)->UnlockBackMove(); + } + pLay = nullptr; + } + return pLay; +} + +/// A specialized form of Paste(), which relocates a whole chain (this and the following, +/// in particular). During this process, only the minimum operations and notifications are done. +bool SwFlowFrame::PasteTree( SwFrame *pStart, SwLayoutFrame *pParent, SwFrame *pSibling, + SwFrame *pOldParent ) +{ + // returns true if there's a LayoutFrame in the chain. + bool bRet = false; + + // The chain beginning with pStart is inserted before pSibling + // under the parent. We take care to invalidate as required. + + // I'm receiving a finished chain. We need to update the pointers for + // the beginning of the chain, then all the uppers and finally the end. + // On the way there, we invalidate as required. + if ( pSibling ) + { + if ( nullptr != (pStart->mpPrev = pSibling->GetPrev()) ) + pStart->GetPrev()->mpNext = pStart; + else + pParent->m_pLower = pStart; + pSibling->InvalidatePos_(); + pSibling->InvalidatePrt_(); + } + else + { + if ( nullptr == (pStart->mpPrev = pParent->Lower()) ) + pParent->m_pLower = pStart; + else + //i#100782 + //If the pParent has more than 1 child nodes, former design will + //ignore them directly without any collection work. It will make some + //dangling pointers. This lead the crash... + //The new design will find the last child of pParent in loop way, and + //add the pStart after the last child. + // pParent->Lower()->pNext = pStart; + { + SwFrame* pTemp = pParent->m_pLower; + while (pTemp) + { + if (pTemp->mpNext) + pTemp = pTemp->mpNext; + else + { + pStart->mpPrev = pTemp; + pTemp->mpNext = pStart; + break; + } + } + } + + + // i#27145 + if ( pParent->IsSctFrame() ) + { + // We have no sibling because pParent is a section frame and + // has just been created to contain some content. The printing + // area of the frame behind pParent has to be invalidated, so + // that the correct distance between pParent and the next frame + // can be calculated. + pParent->InvalidateNextPrtArea(); + } + } + SwFrame *pFloat = pStart; + SwFrame *pLst = nullptr; + SwRectFnSet aRectFnSet(pParent); + SwTwips nGrowVal = 0; + do + { pFloat->mpUpper = pParent; + pFloat->InvalidateAll_(); + pFloat->CheckDirChange(); + + // I'm a friend of the TextFrame and thus am allowed to do many things. + // The CacheIdx idea seems to be a bit risky! + if ( pFloat->IsTextFrame() ) + { + if ( static_cast<SwTextFrame*>(pFloat)->GetCacheIdx() != USHRT_MAX ) + static_cast<SwTextFrame*>(pFloat)->Init(); // I'm his friend. + } + else + bRet = true; + + nGrowVal += aRectFnSet.GetHeight(pFloat->getFrameArea()); + if ( pFloat->GetNext() ) + pFloat = pFloat->GetNext(); + else + { + pLst = pFloat; + pFloat = nullptr; + } + } while ( pFloat ); + + if ( pSibling ) + { + pLst->mpNext = pSibling; + pSibling->mpPrev = pLst; + if( pSibling->IsInFootnote() ) + { + if( pSibling->IsSctFrame() ) + pSibling = static_cast<SwSectionFrame*>(pSibling)->ContainsAny(); + if( pSibling ) + pSibling->Prepare( PrepareHint::ErgoSum ); + } + } + if ( nGrowVal ) + { + if ( pOldParent && pOldParent->IsBodyFrame() ) // For variable page height while browsing + pOldParent->Shrink( nGrowVal ); + pParent->Grow( nGrowVal ); + } + + if ( pParent->IsFootnoteFrame() ) + static_cast<SwFootnoteFrame*>(pParent)->InvalidateNxtFootnoteCnts( pParent->FindPageFrame() ); + return bRet; +} + +void SwFlowFrame::MoveSubTree( SwLayoutFrame* pParent, SwFrame* pSibling ) +{ + OSL_ENSURE( pParent, "No parent given." ); + OSL_ENSURE( m_rThis.GetUpper(), "Where are we coming from?" ); + + // Be economical with notifications if an action is running. + SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + const SwViewShellImp *pImp = pSh ? pSh->Imp() : nullptr; + const bool bComplete = pImp && pImp->IsAction() && pImp->GetLayAction().IsComplete(); + + if ( !bComplete ) + { + SwFrame *pPre = m_rThis.GetIndPrev(); + if ( pPre ) + { + pPre->SetRetouche(); + // follow-up of i#26250 + // invalidate printing area of previous frame, if it's in a table + if ( pPre->GetUpper()->IsInTab() ) + { + pPre->InvalidatePrt_(); + } + pPre->InvalidatePage(); + } + else + { + m_rThis.GetUpper()->SetCompletePaint(); + m_rThis.GetUpper()->InvalidatePage(); + } + } + + SwPageFrame *pOldPage = m_rThis.FindPageFrame(); + + SwLayoutFrame *pOldParent; + bool bInvaLay; + + { + //JoinLock pParent for the lifetime of the Cut/Paste call to avoid + //SwSectionFrame::MergeNext removing the pParent we're trying to reparent + //into + FlowFrameJoinLockGuard aJoinGuard(pParent); + SwFrameDeleteGuard aDeleteGuard(pParent); + pOldParent = CutTree( &m_rThis ); + bInvaLay = PasteTree( &m_rThis, pParent, pSibling, pOldParent ); + } + + // If, by cutting & pasting, an empty SectionFrame came into existence, it should + // disappear automatically. + SwSectionFrame *pSct; + + if ( pOldParent && !pOldParent->Lower() && + ( pOldParent->IsInSct() && + !(pSct = pOldParent->FindSctFrame())->ContainsContent() && + !pSct->ContainsAny( true ) ) ) + { + pSct->DelEmpty( false ); + } + + // If we're in a column section, we'd rather not call Calc "from below" + if( !m_rThis.IsInSct() && + ( !m_rThis.IsInTab() || ( m_rThis.IsTabFrame() && !m_rThis.GetUpper()->IsInTab() ) ) ) + m_rThis.GetUpper()->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + else if( m_rThis.GetUpper()->IsSctFrame() ) + { + SwSectionFrame* pTmpSct = static_cast<SwSectionFrame*>(m_rThis.GetUpper()); + bool bOld = pTmpSct->IsContentLocked(); + pTmpSct->SetContentLock( true ); + pTmpSct->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + if( !bOld ) + pTmpSct->SetContentLock( false ); + } + SwPageFrame *pPage = m_rThis.FindPageFrame(); + + if ( pOldPage != pPage ) + { + m_rThis.InvalidatePage( pPage ); + if ( m_rThis.IsLayoutFrame() ) + { + SwContentFrame *pCnt = static_cast<SwLayoutFrame*>(&m_rThis)->ContainsContent(); + if ( pCnt ) + pCnt->InvalidatePage( pPage ); + } + else if ( pSh && pSh->GetDoc()->GetLineNumberInfo().IsRestartEachPage() + && pPage->FindFirstBodyContent() == &m_rThis ) + { + m_rThis.InvalidateLineNum_(); + } + } + if ( bInvaLay || (pSibling && pSibling->IsLayoutFrame()) ) + m_rThis.GetUpper()->InvalidatePage( pPage ); +} + +bool SwFlowFrame::IsAnFollow( const SwFlowFrame *pAssumed ) const +{ + const SwFlowFrame *pFoll = this; + do + { if ( pAssumed == pFoll ) + return true; + pFoll = pFoll->GetFollow(); + } while ( pFoll ); + return false; +} + +SwTextFrame* SwContentFrame::FindMaster() const +{ + OSL_ENSURE( IsFollow(), "SwContentFrame::FindMaster(): !IsFollow" ); + + const SwContentFrame* pPrec = static_cast<const SwContentFrame*>(SwFlowFrame::GetPrecede()); + + if ( pPrec && pPrec->HasFollow() && pPrec->GetFollow() == this ) + { + OSL_ENSURE( pPrec->IsTextFrame(), "NoTextFrame with follow found" ); + return const_cast<SwTextFrame*>(static_cast< const SwTextFrame* >(pPrec)); + } + + OSL_FAIL( "Follow is lost in Space." ); + return nullptr; +} + +SwSectionFrame* SwSectionFrame::FindMaster() const +{ + OSL_ENSURE( IsFollow(), "SwSectionFrame::FindMaster(): !IsFollow" ); + + if (!m_pSection) + return nullptr; + + SwIterator<SwSectionFrame,SwFormat> aIter( *m_pSection->GetFormat() ); + SwSectionFrame* pSect = aIter.First(); + while ( pSect ) + { + if (pSect->GetFollow() == this) + return pSect; + pSect = aIter.Next(); + } + + OSL_FAIL( "Follow is lost in Space." ); + return nullptr; +} + +SwTabFrame* SwTabFrame::FindMaster( bool bFirstMaster ) const +{ + OSL_ENSURE( IsFollow(), "SwTabFrame::FindMaster(): !IsFollow" ); + + SwIterator<SwTabFrame,SwFormat> aIter( *GetTable()->GetFrameFormat() ); + SwTabFrame* pTab = aIter.First(); + while ( pTab ) + { + if ( bFirstMaster ) + { + // Optimization. This makes code like this obsolete: + // while ( pTab->IsFollow() ) + // pTab = pTab->FindMaster(); + + if ( !pTab->IsFollow() ) + { + SwTabFrame* pNxt = pTab; + while ( pNxt ) + { + if ( pNxt->GetFollow() == this ) + return pTab; + pNxt = pNxt->GetFollow(); + } + } + } + else + { + if ( pTab->GetFollow() == this ) + return pTab; + } + + pTab = aIter.Next(); + } + + OSL_FAIL( "Follow is lost in Space." ); + return nullptr; +} + +/** + * Returns the next/previous Layout leaf that's NOT below this (or even is this itself). + * Also, that leaf must be in the same text flow as the pAnch origin frame (Body, Footnote) + */ +const SwLayoutFrame *SwFrame::GetLeaf( MakePageType eMakePage, bool bFwd, + const SwFrame *pAnch ) const +{ + // No flow, no joy... + if ( !(IsInDocBody() || IsInFootnote() || IsInFly()) ) + return nullptr; + + const SwFrame *pLeaf = this; + bool bFound = false; + + do + { pLeaf = const_cast<SwFrame*>(pLeaf)->GetLeaf( eMakePage, bFwd ); + + if ( pLeaf && + (!IsLayoutFrame() || !static_cast<const SwLayoutFrame*>(this)->IsAnLower( pLeaf ))) + { + if ( pAnch->IsInDocBody() == pLeaf->IsInDocBody() && + pAnch->IsInFootnote() == pLeaf->IsInFootnote() ) + { + bFound = true; + } + } + } while ( !bFound && pLeaf ); + + return static_cast<const SwLayoutFrame*>(pLeaf); +} + +SwLayoutFrame *SwFrame::GetLeaf( MakePageType eMakePage, bool bFwd ) +{ + if ( IsInFootnote() ) + return bFwd ? GetNextFootnoteLeaf( eMakePage ) : GetPrevFootnoteLeaf( eMakePage ); + + // i#53323 + // A frame could be inside a table AND inside a section. + // Thus, it has to be determined, which is the first parent. + bool bInTab( IsInTab() ); + bool bInSct( IsInSct() ); + if ( bInTab && bInSct ) + { + const SwFrame* pUpperFrame( GetUpper() ); + while ( pUpperFrame ) + { + if ( pUpperFrame->IsTabFrame() ) + { + // the table is the first. + bInSct = false; + break; + } + else if ( pUpperFrame->IsSctFrame() ) + { + // the section is the first. + bInTab = false; + break; + } + + pUpperFrame = pUpperFrame->GetUpper(); + } + } + + if ( bInTab && ( !IsTabFrame() || GetUpper()->IsCellFrame() ) ) // TABLE IN TABLE + return bFwd ? GetNextCellLeaf() : GetPrevCellLeaf(); + + if ( bInSct ) + return bFwd ? GetNextSctLeaf( eMakePage ) : GetPrevSctLeaf(); + + return bFwd ? GetNextLeaf( eMakePage ) : GetPrevLeaf(); +} + +bool SwFrame::WrongPageDesc( SwPageFrame* pNew ) +{ + // Now it's getting a bit complicated: + + // Maybe I'm bringing a Pagedesc myself; in that case, + // the pagedesc of the next page needs to correspond. + // Otherwise, I'll have to dig a bit deeper to see where + // the following Pagedesc is coming from. + // If the following page itself tells me that it's pagedesc + // is wrong, I can happily exchange it. + // If the page however thinks that it's pagedesc is correct, + // this doesn't mean it's useful to me: + // If the first BodyContent asks for a PageDesc or a PageBreak, + // I'll have to insert a new page - except the desired page is + // the correct one. + // If I inserted a new page, the problems only get started: + // because then it's likely for the next page to have been + // wrong and having been swapped because of that. + // This in turn means that I have a new (and correct) page, + // but the conditions to swap still apply. + // Way out of the situation: Try to preliminarily insert a + // new page once (empty pages are already inserted by InsertPage() + // if required) + + //My Pagedesc doesn't count if I'm a follow! + const SwPageDesc *pDesc = nullptr; + std::optional<sal_uInt16> oTmp; + SwFlowFrame *pFlow = SwFlowFrame::CastFlowFrame( this ); + if ( !pFlow || !pFlow->IsFollow() ) + { + const SwFormatPageDesc &rFormatDesc = GetPageDescItem(); + pDesc = rFormatDesc.GetPageDesc(); + if( pDesc ) + { + if( !pDesc->GetRightFormat() ) + oTmp = 2; + else if( !pDesc->GetLeftFormat() ) + oTmp = 1; + else if( rFormatDesc.GetNumOffset() ) + oTmp = rFormatDesc.GetNumOffset(); + } + } + + // Does the Content bring a Pagedesc or do we need the + // virtual page number of the new layout leaf? + // PageDesc isn't allowed with Follows + const bool isRightPage = oTmp ? sw::IsRightPageByNumber(*mpRoot, *oTmp) : pNew->OnRightPage(); + if ( !pDesc ) + pDesc = pNew->FindPageDesc(); + + bool bFirst = pNew->OnFirstPage(); + + const SwFlowFrame *pNewFlow = pNew->FindFirstBodyContent(); + // Did we find ourselves? + if( pNewFlow == pFlow ) + pNewFlow = nullptr; + if ( pNewFlow && pNewFlow->GetFrame().IsInTab() ) + pNewFlow = pNewFlow->GetFrame().FindTabFrame(); + const SwPageDesc *pNewDesc= ( pNewFlow && !pNewFlow->IsFollow() ) + ? pNewFlow->GetFrame().GetPageDescItem().GetPageDesc() + : nullptr; + + SAL_INFO( "sw.pageframe", "WrongPageDesc p: " << pNew << " phys: " << pNew->GetPhyPageNum() ); + SAL_INFO( "sw.pageframe", "WrongPageDesc " << pNew->GetPageDesc() << " " << pDesc ); + SAL_INFO( "sw.pageframe", "WrongPageDesc right: " << isRightPage + << " first: " << bFirst << " " << pNew->GetFormat() << " == " + << (isRightPage ? pDesc->GetRightFormat(bFirst) : pDesc->GetLeftFormat(bFirst)) << " " + << (isRightPage ? pDesc->GetLeftFormat(bFirst) : pDesc->GetRightFormat(bFirst)) ); + + return (pNew->GetPageDesc() != pDesc) // own desc ? + || (pNew->GetFormat() != + (isRightPage ? pDesc->GetRightFormat(bFirst) : pDesc->GetLeftFormat(bFirst))) + || (pNewDesc && pNewDesc == pDesc); +} + +/// Returns the next layout leaf in which we can move the frame. +SwLayoutFrame *SwFrame::GetNextLeaf( MakePageType eMakePage ) +{ + OSL_ENSURE( !IsInFootnote(), "GetNextLeaf(), don't call me for Footnote." ); + OSL_ENSURE( !IsInSct(), "GetNextLeaf(), don't call me for Sections." ); + + const bool bBody = IsInDocBody(); // If I'm coming from the DocBody, + // I want to end up in the body. + + // It doesn't make sense to insert pages, as we only want to search the + // chain. + if( IsInFly() ) + eMakePage = MAKEPAGE_NONE; + + // For tables, we just take the big leap. A simple GetNext would + // iterate through the first cells and, in turn, all other cells. + SwLayoutFrame *pLayLeaf = nullptr; + if ( IsTabFrame() ) + { + SwFrame *const pTmp = static_cast<SwTabFrame*>(this)->FindLastContentOrTable(); + if ( pTmp ) + pLayLeaf = pTmp->GetUpper(); + } + if ( !pLayLeaf ) + pLayLeaf = GetNextLayoutLeaf(); + + SwLayoutFrame *pOldLayLeaf = nullptr; // Make sure that we don't have to + // start searching from top when we + // have a freshly created page. + bool bNewPg = false; // Only insert a new page once. + + while ( true ) + { + if ( pLayLeaf ) + { + // There's yet another LayoutFrame. Let's see if it's ready to host + // me as well. + // It only needs to be of the same kind like my starting point + // (DocBody or Footnote respectively) + if ( pLayLeaf->FindPageFrame()->IsFootnotePage() ) + { // If I ended up at the end note pages, we're done. + pLayLeaf = nullptr; + continue; + } + if ( (bBody && !pLayLeaf->IsInDocBody()) || pLayLeaf->IsInTab() + || pLayLeaf->IsInSct() ) + { + // They don't want me! Try again + pOldLayLeaf = pLayLeaf; + pLayLeaf = pLayLeaf->GetNextLayoutLeaf(); + continue; + } + + // I'm wanted, therefore I'm done. However, it may still be that, + // during a page break, the page type isn't the desired one. In that + // case we have to insert a page of the correct type. + + if( !IsFlowFrame() && ( eMakePage == MAKEPAGE_NONE || + eMakePage==MAKEPAGE_APPEND || eMakePage==MAKEPAGE_NOSECTION ) ) + return pLayLeaf; + + SwPageFrame *pNew = pLayLeaf->FindPageFrame(); + const SwViewShell *pSh = getRootFrame()->GetCurrShell(); + // The pagedesc check does not make sense for frames in fly frames + if ( pNew != FindPageFrame() && !bNewPg && !IsInFly() && + // i#46683 + // Do not consider page descriptions in browse mode (since + // MoveBwd ignored them) + !(pSh && pSh->GetViewOptions()->getBrowseMode() ) ) + { + if( WrongPageDesc( pNew ) ) + { + SwFootnoteContFrame *pCont = pNew->FindFootnoteCont(); + if( pCont ) + { + // If the reference of the first footnote of this page + // lies before the page, we'd rather not insert a new page. + + SwFootnoteFrame *pFootnote = static_cast<SwFootnoteFrame*>(pCont->Lower()); + if( pFootnote && pFootnote->GetRef() ) + { + const sal_uInt16 nRefNum = pNew->GetPhyPageNum(); + if( pFootnote->GetRef()->GetPhyPageNum() < nRefNum ) + break; + } + } + //Gotcha! The following page is wrong, therefore we need to + //insert a new one. + if ( eMakePage == MAKEPAGE_INSERT ) + { + bNewPg = true; + + SwPageFrame *pPg = pOldLayLeaf ? + pOldLayLeaf->FindPageFrame() : nullptr; + if ( pPg && pPg->IsEmptyPage() ) + // Don't insert behind. Insert before the EmptyPage. + pPg = static_cast<SwPageFrame*>(pPg->GetPrev()); + + if ( !pPg || pPg == pNew ) + pPg = FindPageFrame(); + + InsertPage( pPg, false ); + pLayLeaf = GetNextLayoutLeaf(); + pOldLayLeaf = nullptr; + continue; + } + else + pLayLeaf = nullptr; + } + } + break; + } + else + { + // There's no other matching LayoutFrame, so we have to insert + // a new page. + if ( eMakePage == MAKEPAGE_APPEND || eMakePage == MAKEPAGE_INSERT ) + { + InsertPage( + pOldLayLeaf ? pOldLayLeaf->FindPageFrame() : FindPageFrame(), + false ); + + // And again from the start. + pLayLeaf = pOldLayLeaf ? pOldLayLeaf : GetNextLayoutLeaf(); + } + else + break; + } + } + return pLayLeaf; +} + +/// Returns the previous layout leaf where we can move the frame. +SwLayoutFrame *SwFrame::GetPrevLeaf() +{ + OSL_ENSURE( !IsInFootnote(), "GetPrevLeaf(), don't call me for Footnote." ); + + const bool bBody = IsInDocBody(); // If I'm coming from the DocBody, + // I want to end up in the body. + const bool bFly = IsInFly(); + + SwLayoutFrame *pLayLeaf = GetPrevLayoutLeaf(); + SwLayoutFrame *pPrevLeaf = nullptr; + + while ( pLayLeaf ) + { + if ( pLayLeaf->IsInTab() || // Never go into tables. + pLayLeaf->IsInSct() ) // Same goes for sections! + pLayLeaf = pLayLeaf->GetPrevLayoutLeaf(); + else if ( bBody && pLayLeaf->IsInDocBody() ) + { + if ( pLayLeaf->Lower() ) + break; + pPrevLeaf = pLayLeaf; + pLayLeaf = pLayLeaf->GetPrevLayoutLeaf(); + if ( pLayLeaf ) + SwFlowFrame::SetMoveBwdJump( true ); + } + else if ( bFly ) + break; //Contents in Flys should accept any layout leaf. + else + pLayLeaf = pLayLeaf->GetPrevLayoutLeaf(); + } + return pLayLeaf ? pLayLeaf : pPrevLeaf; +} + +bool SwFlowFrame::IsPrevObjMove() const +{ + // true: The FlowFrame must respect the a border of the predecessor, also needs + // to insert a break if required. + + //!!!!!!!!!!!Hack!!!!!!!!!!! + const SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + if( pSh && pSh->GetViewOptions()->getBrowseMode() ) + return false; + + SwFrame *pPre = m_rThis.FindPrev(); + + if ( pPre && pPre->GetDrawObjs() ) + { + OSL_ENSURE( SwFlowFrame::CastFlowFrame( pPre ), "new flowfrm?" ); + if( SwFlowFrame::CastFlowFrame( pPre )->IsAnFollow( this ) ) + return false; + SwLayoutFrame* pPreUp = pPre->GetUpper(); + // If the upper is a SectionFrame, or a column of a SectionFrame, we're + // allowed to protrude out of it. However, we need to respect the + // Upper of the SectionFrame. + if( pPreUp->IsInSct() ) + { + if( pPreUp->IsSctFrame() ) + pPreUp = pPreUp->GetUpper(); + else if( pPreUp->IsColBodyFrame() && + pPreUp->GetUpper()->GetUpper()->IsSctFrame() ) + pPreUp = pPreUp->GetUpper()->GetUpper()->GetUpper(); + } + // i#26945 - re-factoring + // use <GetVertPosOrientFrame()> to determine, if object has followed the + // text flow to the next layout frame + for (SwAnchoredObject* pObj : *pPre->GetDrawObjs()) + { + + // Do not consider hidden objects + // i#26945 - do not consider object, which + // doesn't follow the text flow. + if ( pObj->GetFrameFormat().GetDoc()->getIDocumentDrawModelAccess().IsVisibleLayerId( + pObj->GetDrawObj()->GetLayer() ) && + pObj->GetFrameFormat().GetFollowTextFlow().GetValue() ) + { + const SwLayoutFrame* pVertPosOrientFrame = pObj->GetVertPosOrientFrame(); + if ( pVertPosOrientFrame && + pPreUp != pVertPosOrientFrame && + !pPreUp->IsAnLower( pVertPosOrientFrame ) ) + { + return true; + } + } + } + } + return false; +} + +/** +|* If there's a hard page break before the Frame AND there's a +|* predecessor on the same page, true is returned (we need to create a +|* new PageBreak). Otherwise, returns false. +|* If bAct is set to true, this function returns true if +|* there's a PageBreak. +|* Of course, we don't evaluate the hard page break for follows. +|* The page break is in its own FrameFormat (BEFORE) or in the FrameFormat of the +|* predecessor (AFTER). If there's no predecessor on the page, we don't +|* need to think further. +|* Also, a page break (or the need for one) is also present if +|* the FrameFormat contains a PageDesc. +|* The implementation works only on ContentFrames! - the definition +|* of the predecessor is not clear for LayoutFrames. +|*/ +bool SwFlowFrame::IsPageBreak( bool bAct ) const +{ + if ( !IsFollow() && m_rThis.IsInDocBody() && + ( !m_rThis.IsInTab() || ( m_rThis.IsTabFrame() && !m_rThis.GetUpper()->IsInTab() ) ) ) // i66968 + { + const SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + if( pSh && pSh->GetViewOptions()->getBrowseMode() ) + return false; + + // Determine predecessor + const SwFrame *pPrev = m_rThis.FindPrev(); + while ( pPrev && ( !pPrev->IsInDocBody() || + ( pPrev->IsTextFrame() && static_cast<const SwTextFrame*>(pPrev)->IsHiddenNow() ) ) ) + pPrev = pPrev->FindPrev(); + + if ( pPrev ) + { + OSL_ENSURE( pPrev->IsInDocBody(), "IsPageBreak: Not in DocBody?" ); + if ( bAct ) + { if ( m_rThis.FindPageFrame() == pPrev->FindPageFrame() ) + return false; + } + else + { if ( m_rThis.FindPageFrame() != pPrev->FindPageFrame() ) + return false; + } + + //for compatibility, also break at column break if no columns exist + const IDocumentSettingAccess& rIDSA = m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess(); + const bool bTreatSingleColumnBreakAsPageBreak = rIDSA.get(DocumentSettingId::TREAT_SINGLE_COLUMN_BREAK_AS_PAGE_BREAK); + const SvxBreak eBreak = m_rThis.GetBreakItem().GetBreak(); + if ( eBreak == SvxBreak::PageBefore || + eBreak == SvxBreak::PageBoth || + ( bTreatSingleColumnBreakAsPageBreak && eBreak == SvxBreak::ColumnBefore && !m_rThis.FindColFrame() )) + return true; + else + { + const SvxBreak &ePrB = pPrev->GetBreakItem().GetBreak(); + if ( ePrB == SvxBreak::PageAfter || + ePrB == SvxBreak::PageBoth || + m_rThis.GetPageDescItem().GetPageDesc()) + { + return true; + } + } + } + } + return false; +} + +/** +|* If there's a hard column break before the Frame AND there is +|* a predecessor in the same column, we return true (we need to create +|* a ColBreak). Otherwise, we return false. +|* If bAct is set to true, we return true if there's a ColBreak. +|* Of course, we don't evaluate the hard column break for follows. +|* +|* The column break is in its own FrameFormat (BEFORE) or in the FrameFormat of the +|* predecessor (AFTER). If there's no predecessor in the column, we don't +|* need to think further. +|* The implementation works only on ContentFrames! - the definition +|* of the predecessor is not clear for LayoutFrames. +|*/ +bool SwFlowFrame::IsColBreak( bool bAct ) const +{ + if ( !IsFollow() && (m_rThis.IsMoveable() || bAct) ) + { + const SwFrame *pCol = m_rThis.FindColFrame(); + if ( pCol ) + { + // Determine predecessor + const SwFrame *pPrev = m_rThis.FindPrev(); + while( pPrev && ( ( !pPrev->IsInDocBody() && !m_rThis.IsInFly() && !m_rThis.FindFooterOrHeader() ) || + ( pPrev->IsTextFrame() && static_cast<const SwTextFrame*>(pPrev)->IsHiddenNow() ) ) ) + pPrev = pPrev->FindPrev(); + + if ( pPrev ) + { + if ( bAct ) + { if ( pCol == pPrev->FindColFrame() ) + return false; + } + else + { if ( pCol != pPrev->FindColFrame() ) + return false; + } + + const SvxBreak eBreak = m_rThis.GetBreakItem().GetBreak(); + if ( eBreak == SvxBreak::ColumnBefore || + eBreak == SvxBreak::ColumnBoth ) + return true; + else + { + const SvxBreak &ePrB = pPrev->GetBreakItem().GetBreak(); + if ( ePrB == SvxBreak::ColumnAfter || + ePrB == SvxBreak::ColumnBoth ) + return true; + } + } + } + } + return false; +} + +bool SwFlowFrame::HasParaSpaceAtPages( bool bSct ) const +{ + if( m_rThis.IsInSct() ) + { + const SwFrame* pTmp = m_rThis.GetUpper(); + while( pTmp ) + { + if( pTmp->IsCellFrame() || pTmp->IsFlyFrame() || + pTmp->IsFooterFrame() || pTmp->IsHeaderFrame() || + ( pTmp->IsFootnoteFrame() && !static_cast<const SwFootnoteFrame*>(pTmp)->GetMaster() ) ) + return true; + if( pTmp->IsPageFrame() ) + return !pTmp->GetPrev() || IsPageBreak(true); + if( pTmp->IsColumnFrame() && pTmp->GetPrev() ) + return IsColBreak( true ); + if( pTmp->IsSctFrame() && ( !bSct || pTmp->GetPrev() ) ) + return false; + pTmp = pTmp->GetUpper(); + } + OSL_FAIL( "HasParaSpaceAtPages: Where's my page?" ); + return false; + } + if( !m_rThis.IsInDocBody() || ( m_rThis.IsInTab() && !m_rThis.IsTabFrame()) || + IsPageBreak( true ) || ( m_rThis.FindColFrame() && IsColBreak( true ) ) ) + return true; + const SwFrame* pTmp = m_rThis.FindColFrame(); + if( pTmp ) + { + if( pTmp->GetPrev() ) + return false; + } + else + pTmp = &m_rThis; + pTmp = pTmp->FindPageFrame(); + return pTmp && !pTmp->GetPrev(); +} + +/** helper method to determine previous frame for calculation of the + upper space + + i#11860 +*/ +const SwFrame* SwFlowFrame::GetPrevFrameForUpperSpaceCalc_( const SwFrame* _pProposedPrevFrame ) const +{ + const SwFrame* pPrevFrame = _pProposedPrevFrame + ? _pProposedPrevFrame + : m_rThis.GetPrev(); + + // Skip hidden paragraphs and empty sections + while ( pPrevFrame && + ( ( pPrevFrame->IsTextFrame() && + static_cast<const SwTextFrame*>(pPrevFrame)->IsHiddenNow() ) || + ( pPrevFrame->IsSctFrame() && + !static_cast<const SwSectionFrame*>(pPrevFrame)->GetSection() ) ) ) + { + pPrevFrame = pPrevFrame->GetPrev(); + } + + // Special case: no direct previous frame is found but frame is in footnote + // Search for a previous frame in previous footnote, + // if frame isn't in a section, which is also in the footnote + if ( !pPrevFrame && m_rThis.IsInFootnote() && + ( m_rThis.IsSctFrame() || + !m_rThis.IsInSct() || !m_rThis.FindSctFrame()->IsInFootnote() ) ) + { + const SwFootnoteFrame* pPrevFootnoteFrame = + static_cast<const SwFootnoteFrame*>(m_rThis.FindFootnoteFrame()->GetPrev()); + if ( pPrevFootnoteFrame ) + { + pPrevFrame = pPrevFootnoteFrame->GetLastLower(); + + // Skip hidden paragraphs and empty sections + while ( pPrevFrame && + ( ( pPrevFrame->IsTextFrame() && + static_cast<const SwTextFrame*>(pPrevFrame)->IsHiddenNow() ) || + ( pPrevFrame->IsSctFrame() && + !static_cast<const SwSectionFrame*>(pPrevFrame)->GetSection() ) ) ) + { + pPrevFrame = pPrevFrame->GetPrev(); + } + } + } + // Special case: found previous frame is a section + // Search for the last content in the section + if( pPrevFrame && pPrevFrame->IsSctFrame() ) + { + const SwSectionFrame* pPrevSectFrame = + static_cast<const SwSectionFrame*>(pPrevFrame); + pPrevFrame = pPrevSectFrame->FindLastContent(); + // If the last content is in a table _inside_ the section, + // take the table herself. + // Correction: Check directly, if table is inside table, instead of indirectly + // by checking, if section isn't inside a table + if ( pPrevFrame && pPrevFrame->IsInTab() ) + { + const SwTabFrame* pTableFrame = pPrevFrame->FindTabFrame(); + if ( pPrevSectFrame->IsAnLower( pTableFrame ) ) + { + pPrevFrame = pTableFrame; + } + } + // Correction: skip hidden text frames + while ( pPrevFrame && + pPrevFrame->IsTextFrame() && + static_cast<const SwTextFrame*>(pPrevFrame)->IsHiddenNow() ) + { + pPrevFrame = pPrevFrame->GetPrev(); + } + } + + return pPrevFrame; +} + +/// Compare styles attached to these text frames. +static bool lcl_IdenticalStyles(const SwFrame* pPrevFrame, const SwFrame* pFrame) +{ + SwTextFormatColl *pPrevFormatColl = nullptr; + if (pPrevFrame && pPrevFrame->IsTextFrame()) + { + const SwTextFrame *pTextFrame = static_cast< const SwTextFrame * >( pPrevFrame ); + pPrevFormatColl = dynamic_cast<SwTextFormatColl*>( + pTextFrame->GetTextNodeForParaProps()->GetFormatColl()); + } + + bool bIdenticalStyles = false; + if (pFrame && pFrame->IsTextFrame()) + { + const SwTextFrame *pTextFrame = static_cast< const SwTextFrame * >( pFrame ); + SwTextFormatColl *const pFormatColl = dynamic_cast<SwTextFormatColl*>( + pTextFrame->GetTextNodeForParaProps()->GetFormatColl()); + bIdenticalStyles = pPrevFormatColl == pFormatColl; + } + return bIdenticalStyles; +} + +static bool lcl_getContextualSpacing(const SwFrame* pPrevFrame) +{ + bool bRet; + auto pAccess = std::make_unique<SwBorderAttrAccess>(SwFrame::GetCache(), pPrevFrame); + const SwBorderAttrs *pAttrs = pAccess->Get(); + + bRet = pAttrs->GetULSpace().GetContext(); + + return bRet; +} + + +SwTwips SwFlowFrame::CalcUpperSpace( const SwBorderAttrs *pAttrs, + const SwFrame* pPr, + const bool _bConsiderGrid ) const +{ + const SwFrame* pPrevFrame = GetPrevFrameForUpperSpaceCalc_( pPr ); + + std::unique_ptr<SwBorderAttrAccess> pAccess; + SwFrame* pOwn; + if( !pAttrs ) + { + if( m_rThis.IsSctFrame() ) + { + SwSectionFrame* pFoll = &static_cast<SwSectionFrame&>(m_rThis); + do + pOwn = pFoll->ContainsAny(); + while( !pOwn && nullptr != ( pFoll = pFoll->GetFollow() ) ); + if( !pOwn ) + return 0; + } + else + pOwn = &m_rThis; + pAccess = std::make_unique<SwBorderAttrAccess>(SwFrame::GetCache(), pOwn); + pAttrs = pAccess->Get(); + } + else + { + pOwn = &m_rThis; + } + SwTwips nUpper = 0; + + { + const IDocumentSettingAccess& rIDSA = m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess(); + if( pPrevFrame ) + { + const bool bUseFormerLineSpacing = rIDSA.get(DocumentSettingId::OLD_LINE_SPACING); + const bool bContextualSpacingThis = pAttrs->GetULSpace().GetContext(); + const bool bContextualSpacingPrev = lcl_getContextualSpacing(pPrevFrame); + + const bool bContextualSpacing = bContextualSpacingThis + && bContextualSpacingPrev + && lcl_IdenticalStyles(pPrevFrame, &m_rThis); + + // tdf#125893 always ignore own top margin setting of the actual paragraph + // with contextual spacing, if the previous paragraph is identical + const bool bHalfContextualSpacing = !bContextualSpacing + && bContextualSpacingThis + && !bContextualSpacingPrev + && lcl_IdenticalStyles(pPrevFrame, &m_rThis); + + // tdf#134463 always ignore own bottom margin setting of the previous paragraph + // with contextual spacing, if the actual paragraph is identical + const bool bHalfContextualSpacingPrev = !bContextualSpacing + && !bContextualSpacingThis + && bContextualSpacingPrev + && lcl_IdenticalStyles(pPrevFrame, &m_rThis); + + // i#11860 - use new method to determine needed spacing + // values of found previous frame and use these values. + SwTwips nPrevLowerSpace = 0; + SwTwips nPrevLineSpacing = 0; + // i#102458 + bool bPrevLineSpacingPorportional = false; + GetSpacingValuesOfFrame( (*pPrevFrame), + nPrevLowerSpace, nPrevLineSpacing, + bPrevLineSpacingPorportional ); + if( rIDSA.get(DocumentSettingId::PARA_SPACE_MAX) ) + { + // FIXME: apply bHalfContextualSpacing for better portability? + nUpper = bContextualSpacing ? 0 : nPrevLowerSpace + pAttrs->GetULSpace().GetUpper(); + SwTwips nAdd = nPrevLineSpacing; + // i#11859 - consideration of the line spacing + // for the upper spacing of a text frame + if ( bUseFormerLineSpacing ) + { + // former consideration + if ( pOwn->IsTextFrame() ) + { + nAdd = std::max( nAdd, static_cast<SwTextFrame*>(pOwn)->GetLineSpace() ); + } + nUpper += nAdd; + } + else + { + // new consideration: + // Only the proportional line spacing of the previous + // text frame is considered for the upper spacing and + // the line spacing values are add up instead of + // building its maximum. + if ( pOwn->IsTextFrame() ) + { + // i#102458 + // Correction: + // A proportional line spacing of the previous text frame + // is added up to an own leading line spacing. + // Otherwise, the maximum of the leading line spacing + // of the previous text frame and the own leading line + // spacing is built. + if ( bPrevLineSpacingPorportional ) + { + nAdd += static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true ); + } + else + { + nAdd = std::max( nAdd, static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true ) ); + } + } + nUpper += nAdd; + } + } + else + { + nUpper = bContextualSpacing ? 0 : std::max( + bHalfContextualSpacingPrev ? 0 : static_cast<long>(nPrevLowerSpace), + bHalfContextualSpacing ? 0 : static_cast<long>(pAttrs->GetULSpace().GetUpper()) ); + + // i#11859 - consideration of the line spacing + // for the upper spacing of a text frame + if ( bUseFormerLineSpacing ) + { + // former consideration + if ( pOwn->IsTextFrame() ) + nUpper = std::max( nUpper, static_cast<SwTextFrame*>(pOwn)->GetLineSpace() ); + if ( nPrevLineSpacing != 0 ) + { + nUpper = std::max( nUpper, nPrevLineSpacing ); + } + } + else + { + // new consideration: + // Only the proportional line spacing of the previous + // text frame is considered for the upper spacing and + // the line spacing values are add up and added to + // the paragraph spacing instead of building the + // maximum of the line spacings and the paragraph spacing. + SwTwips nAdd = nPrevLineSpacing; + if ( pOwn->IsTextFrame() ) + { + // i#102458 + // Correction: + // A proportional line spacing of the previous text frame + // is added up to an own leading line spacing. + // Otherwise, the maximum of the leading line spacing + // of the previous text frame and the own leading line + // spacing is built. + if ( bPrevLineSpacingPorportional ) + { + nAdd += static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true ); + } + else + { + nAdd = std::max( nAdd, static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true ) ); + } + } + nUpper += nAdd; + } + } + } + else if ( rIDSA.get(DocumentSettingId::PARA_SPACE_MAX_AT_PAGES) && + CastFlowFrame( pOwn )->HasParaSpaceAtPages( m_rThis.IsSctFrame() ) ) + { + nUpper = pAttrs->GetULSpace().GetUpper(); + } + } + + // i#25029 - pass previous frame <pPrevFrame> + // to method <GetTopLine(..)>, if parameter <pPr> is set. + // Note: parameter <pPr> is set, if method is called from <SwTextFrame::WouldFit(..)> + nUpper += pAttrs->GetTopLine( m_rThis, (pPr ? pPrevFrame : nullptr) ); + + // i#11860 - consider value of new parameter <_bConsiderGrid> + // and use new method <GetUpperSpaceAmountConsideredForPageGrid(..)> + + //consider grid in square page mode + if ( _bConsiderGrid && m_rThis.GetUpper()->GetFormat()->GetDoc()->IsSquaredPageMode() ) + { + nUpper += GetUpperSpaceAmountConsideredForPageGrid_( nUpper ); + } + return nUpper; +} + +/** method to determine the upper space amount, which is considered for + the page grid + + i#11860 + Precondition: Position of frame is valid. +*/ +SwTwips SwFlowFrame::GetUpperSpaceAmountConsideredForPageGrid_( + const SwTwips _nUpperSpaceWithoutGrid ) const +{ + SwTwips nUpperSpaceAmountConsideredForPageGrid = 0; + + if ( m_rThis.IsInDocBody() && m_rThis.GetAttrSet()->GetParaGrid().GetValue() ) + { + const SwPageFrame* pPageFrame = m_rThis.FindPageFrame(); + SwTextGridItem const*const pGrid(GetGridItem(pPageFrame)); + if( pGrid ) + { + const SwFrame* pBodyFrame = pPageFrame->FindBodyCont(); + if ( pBodyFrame ) + { + const long nGridLineHeight = + pGrid->GetBaseHeight() + pGrid->GetRubyHeight(); + + SwRectFnSet aRectFnSet(&m_rThis); + const SwTwips nBodyPrtTop = aRectFnSet.GetPrtTop(*pBodyFrame); + const SwTwips nProposedPrtTop = + aRectFnSet.YInc( aRectFnSet.GetTop(m_rThis.getFrameArea()), + _nUpperSpaceWithoutGrid ); + + const SwTwips nSpaceAbovePrtTop = + aRectFnSet.YDiff( nProposedPrtTop, nBodyPrtTop ); + const SwTwips nSpaceOfCompleteLinesAbove = + nGridLineHeight * ( nSpaceAbovePrtTop / nGridLineHeight ); + SwTwips nNewPrtTop = + aRectFnSet.YInc( nBodyPrtTop, nSpaceOfCompleteLinesAbove ); + if ( aRectFnSet.YDiff( nProposedPrtTop, nNewPrtTop ) > 0 ) + { + nNewPrtTop = aRectFnSet.YInc( nNewPrtTop, nGridLineHeight ); + } + + const SwTwips nNewUpperSpace = + aRectFnSet.YDiff( nNewPrtTop, + aRectFnSet.GetTop(m_rThis.getFrameArea()) ); + + nUpperSpaceAmountConsideredForPageGrid = + nNewUpperSpace - _nUpperSpaceWithoutGrid; + + OSL_ENSURE( nUpperSpaceAmountConsideredForPageGrid >= 0, + "<SwFlowFrame::GetUpperSpaceAmountConsideredForPageGrid(..)> - negative space considered for page grid!" ); + } + } + } + return nUpperSpaceAmountConsideredForPageGrid; +} + +/** method to determine the upper space amount, which is considered for + the previous frame + + i#11860 +*/ +SwTwips SwFlowFrame::GetUpperSpaceAmountConsideredForPrevFrame() const +{ + SwTwips nUpperSpaceAmountOfPrevFrame = 0; + + const SwFrame* pPrevFrame = GetPrevFrameForUpperSpaceCalc_(); + if ( pPrevFrame ) + { + SwTwips nPrevLowerSpace = 0; + SwTwips nPrevLineSpacing = 0; + // i#102458 + bool bDummy = false; + GetSpacingValuesOfFrame( (*pPrevFrame), nPrevLowerSpace, nPrevLineSpacing, bDummy ); + if ( nPrevLowerSpace > 0 || nPrevLineSpacing > 0 ) + { + const IDocumentSettingAccess& rIDSA = m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess(); + if ( rIDSA.get(DocumentSettingId::PARA_SPACE_MAX) || + !rIDSA.get(DocumentSettingId::OLD_LINE_SPACING) ) + { + nUpperSpaceAmountOfPrevFrame = nPrevLowerSpace + nPrevLineSpacing; + } + else + { + nUpperSpaceAmountOfPrevFrame = std::max( nPrevLowerSpace, nPrevLineSpacing ); + } + } + } + + return nUpperSpaceAmountOfPrevFrame; +} + +/** method to determine the upper space amount, which is considered for + the previous frame and the page grid, if option 'Use former object + positioning' is OFF + + i#11860 +*/ +SwTwips SwFlowFrame::GetUpperSpaceAmountConsideredForPrevFrameAndPageGrid() const +{ + SwTwips nUpperSpaceAmountConsideredForPrevFrameAndPageGrid = 0; + + if ( !m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess().get(DocumentSettingId::USE_FORMER_OBJECT_POS) ) + { + nUpperSpaceAmountConsideredForPrevFrameAndPageGrid = + GetUpperSpaceAmountConsideredForPrevFrame() + + ( m_rThis.GetUpper()->GetFormat()->GetDoc()->IsSquaredPageMode() + ? GetUpperSpaceAmountConsideredForPageGrid_( CalcUpperSpace( nullptr, nullptr, false ) ) + : 0 ); + } + + return nUpperSpaceAmountConsideredForPrevFrameAndPageGrid; +} + +// Calculation of lower space + +SwTwips SwFlowFrame::CalcLowerSpace( const SwBorderAttrs* _pAttrs ) const +{ + SwTwips nLowerSpace = 0; + + std::unique_ptr<SwBorderAttrAccess> pAttrAccess; + if ( !_pAttrs ) + { + pAttrAccess = std::make_unique<SwBorderAttrAccess>(SwFrame::GetCache(), &m_rThis); + _pAttrs = pAttrAccess->Get(); + } + + bool bCommonBorder = true; + if ( m_rThis.IsInSct() && m_rThis.GetUpper()->IsColBodyFrame() ) + { + const SwSectionFrame* pSectFrame = m_rThis.FindSctFrame(); + bCommonBorder = pSectFrame->GetFormat()->GetBalancedColumns().GetValue(); + } + nLowerSpace = bCommonBorder ? + _pAttrs->GetBottomLine( m_rThis ) : + _pAttrs->CalcBottomLine(); + + // i#26250 + // - correct consideration of table frames + // - use new method <CalcAddLowerSpaceAsLastInTableCell(..)> + if ( ( ( m_rThis.IsTabFrame() && m_rThis.GetUpper()->IsInTab() ) || + // No lower spacing, if frame has a follow + ( m_rThis.IsInTab() && !GetFollow() ) ) && + !m_rThis.GetIndNext() ) + { + nLowerSpace += CalcAddLowerSpaceAsLastInTableCell( _pAttrs ); + } + + // tdf#128195 Consider para spacing below last paragraph in header + bool bHasSpacingBelowPara = m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess().get( + DocumentSettingId::HEADER_SPACING_BELOW_LAST_PARA); + if (bHasSpacingBelowPara && !m_rThis.IsInFly() && m_rThis.FindFooterOrHeader() && !GetFollow() + && !m_rThis.GetIndNext()) + nLowerSpace += _pAttrs->GetULSpace().GetLower() + _pAttrs->CalcLineSpacing(); + + return nLowerSpace; +} + +/** calculation of the additional space to be considered, if flow frame + is the last inside a table cell + + i#26250 +*/ +SwTwips SwFlowFrame::CalcAddLowerSpaceAsLastInTableCell( + const SwBorderAttrs* _pAttrs ) const +{ + SwTwips nAdditionalLowerSpace = 0; + + IDocumentSettingAccess const& rIDSA(m_rThis.GetUpper()->GetFormat()->getIDocumentSettingAccess()); + if (rIDSA.get(DocumentSettingId::ADD_PARA_SPACING_TO_TABLE_CELLS)) + { + const SwFrame* pFrame = &m_rThis; + if ( pFrame->IsSctFrame() ) + { + const SwSectionFrame* pSectFrame = static_cast<const SwSectionFrame*>(pFrame); + pFrame = pSectFrame->FindLastContent(); + if ( pFrame && pFrame->IsInTab() ) + { + const SwTabFrame* pTableFrame = pFrame->FindTabFrame(); + if ( pSectFrame->IsAnLower( pTableFrame ) ) + { + pFrame = pTableFrame; + } + } + } + + std::unique_ptr<SwBorderAttrAccess> pAttrAccess; + if (pFrame && (!_pAttrs || pFrame != &m_rThis)) + { + pAttrAccess = std::make_unique<SwBorderAttrAccess>(SwFrame::GetCache(), pFrame); + _pAttrs = pAttrAccess->Get(); + } + + if (_pAttrs) + { + nAdditionalLowerSpace += _pAttrs->GetULSpace().GetLower(); + + if (rIDSA.get(DocumentSettingId::ADD_PARA_LINE_SPACING_TO_TABLE_CELLS)) + { + nAdditionalLowerSpace += _pAttrs->CalcLineSpacing(); + } + } + } + + return nAdditionalLowerSpace; +} + +/// Moves the Frame forward if it seems necessary regarding the current conditions and attributes. +bool SwFlowFrame::CheckMoveFwd( bool& rbMakePage, bool bKeep, bool bIgnoreMyOwnKeepValue ) +{ + const SwFrame* pNxt = m_rThis.GetIndNext(); + + if ( bKeep && //!bMovedBwd && + ( !pNxt || ( pNxt->IsTextFrame() && static_cast<const SwTextFrame*>(pNxt)->IsEmptyMaster() ) ) && + ( nullptr != (pNxt = m_rThis.FindNext()) ) && IsKeepFwdMoveAllowed(bIgnoreMyOwnKeepValue) ) + { + if( pNxt->IsSctFrame() ) + { // Don't get fooled by empty SectionFrames + const SwFrame* pTmp = nullptr; + while( pNxt && pNxt->IsSctFrame() && + ( !static_cast<const SwSectionFrame*>(pNxt)->GetSection() || + nullptr == ( pTmp = static_cast<const SwSectionFrame*>(pNxt)->ContainsAny() ) ) ) + { + pNxt = pNxt->FindNext(); + pTmp = nullptr; + } + if( pTmp ) + pNxt = pTmp; // the content of the next notempty sectionfrm + } + if( pNxt && pNxt->isFrameAreaPositionValid() ) + { + bool bMove = false; + const SwSectionFrame *pSct = m_rThis.FindSctFrame(); + if( pSct && !pSct->isFrameAreaSizeValid() ) + { + const SwSectionFrame* pNxtSct = pNxt->FindSctFrame(); + if( pNxtSct && pSct->IsAnFollow( pNxtSct ) ) + bMove = true; + } + else + bMove = true; + if( bMove ) + { + //Keep together with the following frame + MoveFwd( rbMakePage, false ); + return true; + } + } + } + + bool bMovedFwd = false; + + if ( m_rThis.GetIndPrev() ) + { + if ( IsPrevObjMove() ) // Should we care about objects of the Prev? + { + bMovedFwd = true; + if ( !MoveFwd( rbMakePage, false ) ) + rbMakePage = false; + } + else + { + if ( IsPageBreak( false ) ) + { + while ( MoveFwd( rbMakePage, true ) ) + /* do nothing */; + rbMakePage = false; + bMovedFwd = true; + } + else if ( IsColBreak ( false ) ) + { + const SwPageFrame *pPage = m_rThis.FindPageFrame(); + SwFrame *pCol = m_rThis.FindColFrame(); + do + { MoveFwd( rbMakePage, false ); + SwFrame *pTmp = m_rThis.FindColFrame(); + if( pTmp != pCol ) + { + bMovedFwd = true; + pCol = pTmp; + } + else + break; + } while ( IsColBreak( false ) ); + if ( pPage != m_rThis.FindPageFrame() ) + rbMakePage = false; + } + } + } + return bMovedFwd; +} + +bool SwFlowFrame::ForbiddenForFootnoteCntFwd() const +{ + return m_rThis.IsTabFrame() || m_rThis.IsInTab(); +} + +/// Return value guarantees that a new page was not created, +/// although false does not NECESSARILY indicate that a new page was created. +/// Either false or true(MoveFootnoteCntFwd) can be returned if no changes were made +bool SwFlowFrame::MoveFwd( bool bMakePage, bool bPageBreak, bool bMoveAlways ) +{ +//!!!!MoveFootnoteCntFwd might need to be updated as well. + SwFootnoteBossFrame *pOldBoss = m_rThis.FindFootnoteBossFrame(); + if (m_rThis.IsInFootnote()) + { + assert(!ForbiddenForFootnoteCntFwd()); // prevented by IsMoveable() + if (!m_rThis.IsContentFrame() || !pOldBoss) + { + SAL_WARN("sw.core", "Tables in footnotes are not truly supported"); + return false; + } + return static_cast<SwContentFrame&>(m_rThis).MoveFootnoteCntFwd( bMakePage, pOldBoss ); + } + + if( !IsFwdMoveAllowed() && !bMoveAlways ) + { + bool bNoFwd = true; + if( m_rThis.IsInSct() ) + { + SwFootnoteBossFrame* pBoss = m_rThis.FindFootnoteBossFrame(); + bNoFwd = !pBoss->IsInSct() || ( !pBoss->Lower()->GetNext() && + !pBoss->GetPrev() ); + } + + // Allow the MoveFwd even if we do not have an IndPrev in these cases: + if ( m_rThis.IsInTab() && + ( !m_rThis.IsTabFrame() || + ( m_rThis.GetUpper()->IsInTab() && + m_rThis.GetUpper()->FindTabFrame()->IsFwdMoveAllowed() ) ) && + nullptr != m_rThis.GetNextCellLeaf() ) + { + bNoFwd = false; + } + + if( bNoFwd ) + { + // It's allowed to move PageBreaks if the Frame isn't the first + // one on the page. + if ( !bPageBreak ) + return false; + + const SwFrame *pCol = m_rThis.FindColFrame(); + if ( !pCol || !pCol->GetPrev() ) + return false; + } + } + + std::unique_ptr<SwFrameDeleteGuard> xDeleteGuard(bMakePage ? new SwFrameDeleteGuard(pOldBoss) : nullptr); + + bool bSamePage = true; + SwLayoutFrame *pNewUpper = + m_rThis.GetLeaf( bMakePage ? MAKEPAGE_INSERT : MAKEPAGE_NONE, true ); + + if ( pNewUpper ) + { + PROTOCOL_ENTER( &m_rThis, PROT::MoveFwd, DbgAction::NONE, nullptr ); + SwPageFrame *pOldPage = pOldBoss->FindPageFrame(); + // We move ourself and all the direct successors before the + // first ContentFrame below the new Upper. + + // If our NewUpper lies in a SectionFrame, we need to make sure + // that it won't destroy itself in Calc. + SwSectionFrame* pSect = pNewUpper->FindSctFrame(); + if( pSect ) + { + // If we only switch column within our SectionFrame, we better don't + // call Calc, as this would format the SectionFrame, which in turn would + // call us again, etc. + if( pSect != m_rThis.FindSctFrame() ) + { + bool bUnlock = !pSect->IsColLocked(); + pSect->ColLock(); + pNewUpper->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + if( bUnlock ) + pSect->ColUnlock(); + } + } + // Do not calculate split cell frames. + else if ( !pNewUpper->IsCellFrame() || pNewUpper->Lower() ) + pNewUpper->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + + SwFootnoteBossFrame *pNewBoss = pNewUpper->FindFootnoteBossFrame(); + bool bBossChg = pNewBoss != pOldBoss; + pNewBoss = pNewBoss->FindFootnoteBossFrame( true ); + pOldBoss = pOldBoss->FindFootnoteBossFrame( true ); + SwPageFrame* pNewPage = pOldPage; + + xDeleteGuard.reset(); + + // First, we move the footnotes. + bool bFootnoteMoved = false; + + // i#26831 + // If pSect has just been created, the printing area of pSect has + // been calculated based on the first content of its follow. + // In this case we prefer to call a SimpleFormat for this new + // section after we inserted the contents. Otherwise the section + // frame will invalidate its lowers, if its printing area changes + // in SwSectionFrame::Format, which can cause loops. + const bool bForceSimpleFormat = pSect && pSect->HasFollow() && + !pSect->ContainsAny(); + + if ( pNewBoss != pOldBoss ) + { + pNewPage = pNewBoss->FindPageFrame(); + bSamePage = pNewPage == pOldPage; + // Set deadline, so the footnotes don't think up + // silly things... + SwRectFnSet aRectFnSet(pOldBoss); + SwSaveFootnoteHeight aHeight( pOldBoss, + aRectFnSet.GetBottom(pOldBoss->getFrameArea()) ); + SwContentFrame* pStart = m_rThis.IsContentFrame() ? + static_cast<SwContentFrame*>(&m_rThis) : static_cast<SwLayoutFrame&>(m_rThis).ContainsContent(); + OSL_ENSURE( pStart || ( m_rThis.IsTabFrame() && !static_cast<SwTabFrame&>(m_rThis).Lower() ), + "MoveFwd: Missing Content" ); + SwLayoutFrame* pBody = pStart ? ( pStart->IsTextFrame() ? + const_cast<SwBodyFrame *>(static_cast<SwTextFrame*>(pStart)->FindBodyFrame()) : nullptr ) : nullptr; + if( pBody ) + bFootnoteMoved = pBody->MoveLowerFootnotes( pStart, pOldBoss, pNewBoss, + false); + } + // It's possible when dealing with SectionFrames that we have been moved + // by pNewUpper->Calc(), for instance into the pNewUpper. + // MoveSubTree or PasteTree respectively is not prepared to handle such a + // situation. + if( pNewUpper != m_rThis.GetUpper() ) + { + // i#27145 + SwSectionFrame* pOldSct = nullptr; + if ( m_rThis.GetUpper()->IsSctFrame() ) + { + pOldSct = static_cast<SwSectionFrame*>(m_rThis.GetUpper()); + } + + MoveSubTree( pNewUpper, pNewUpper->Lower() ); + + // i#27145 + if ( pOldSct && pOldSct->GetSection() ) + { + // Prevent loops by setting the new height at + // the section frame if footnotes have been moved. + // Otherwise the call of SwLayNotify::~SwLayNotify() for + // the (invalid) section frame will invalidate the first + // lower of its follow, because it grows due to the removed + // footnotes. + // Note: If pOldSct has become empty during MoveSubTree, it + // has already been scheduled for removal. No SimpleFormat + // for these. + pOldSct->SimpleFormat(); + } + + // i#26831 + if ( bForceSimpleFormat ) + { + pSect->SimpleFormat(); + } + + if ( bFootnoteMoved && !bSamePage ) + { + pOldPage->UpdateFootnoteNum(); + pNewPage->UpdateFootnoteNum(); + } + + if( bBossChg ) + { + m_rThis.Prepare( PrepareHint::BossChanged, nullptr, false ); + if( !bSamePage ) + { + SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + if ( pSh && !pSh->Imp()->IsUpdateExpFields() ) + pSh->GetDoc()->getIDocumentFieldsAccess().SetNewFieldLst(true); // Will be done by CalcLayout() later on! + + pNewPage->InvalidateSpelling(); + pNewPage->InvalidateSmartTags(); + pNewPage->InvalidateAutoCompleteWords(); + pNewPage->InvalidateWordCount(); + } + } + } + // No <CheckPageDesc(..)> in online layout + const SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + + if ( !( pSh && pSh->GetViewOptions()->getBrowseMode() ) ) + { + // i#106452 + // check page description not only in situation with sections. + if ( !bSamePage && + ( m_rThis.GetPageDescItem().GetPageDesc() || + pOldPage->GetPageDesc()->GetFollow() != pNewPage->GetPageDesc() ) ) + { + SwFrame::CheckPageDescs( pNewPage, false ); + } + } + } + return bSamePage; +} + +/** Return value tells whether any changes have been made. + * If true, the frame has moved backwards to an earlier column/section/frame/page etc. + * + * @note This should be called by derived classes. + * @note The actual moving must be implemented in the subclasses via Cut()/Paste(). + */ +bool SwFlowFrame::MoveBwd( bool &rbReformat ) +{ + SwFlowFrame::SetMoveBwdJump( false ); + + SwFootnoteFrame* pFootnote = m_rThis.FindFootnoteFrame(); + if ( pFootnote && pFootnote->IsBackMoveLocked() ) + return false; + + // Text frames, which are directly inside + // tables aren't allowed to move backward. + if ( m_rThis.IsTextFrame() && m_rThis.IsInTab() ) + { + const SwLayoutFrame* pUpperFrame = m_rThis.GetUpper(); + while ( pUpperFrame ) + { + if ( pUpperFrame->IsTabFrame() || pUpperFrame->IsRowFrame() ) + { + return false; + } + // If the text frame is a follow-section-in-table, that can move + // backward as well. + bool bIsFollowSection = pUpperFrame->IsSctFrame() && static_cast<const SwSectionFrame*>(pUpperFrame)->GetPrecede(); + + // If the text frame is a follow-in-table, that can move + // backward as well. + bool bIsFollow = const_cast<SwLayoutFrame*>(pUpperFrame)->GetPrevCellLeaf(); + + if ( ( pUpperFrame->IsColumnFrame() && pUpperFrame->IsInSct() ) || bIsFollowSection || bIsFollow ) + { + break; + } + pUpperFrame = pUpperFrame->GetUpper(); + } + } + + SwFootnoteBossFrame * pOldBoss = m_rThis.FindFootnoteBossFrame(); + if (!pOldBoss) + return false; + + SwPageFrame * const pOldPage = pOldBoss->FindPageFrame(); + SwLayoutFrame *pNewUpper = nullptr; + bool bCheckPageDescs = false; + bool bCheckPageDescOfNextPage = false; + + if ( pFootnote ) + { + // If the footnote already sits on the same page/column as the reference, + // we can't flow back. The breaks don't need to be checked for footnotes. + + // i#37084 FindLastContent does not necessarily + // have to have a result != 0 + SwFrame* pRef = nullptr; + const bool bEndnote = pFootnote->GetAttr()->GetFootnote().IsEndNote(); + const IDocumentSettingAccess& rSettings + = pFootnote->GetAttrSet()->GetDoc()->getIDocumentSettingAccess(); + if( bEndnote && pFootnote->IsInSct() ) + { + SwSectionFrame* pSect = pFootnote->FindSctFrame(); + if( pSect->IsEndnAtEnd() ) + // Endnotes at the end of the section. + pRef = pSect->FindLastContent( SwFindMode::LastCnt ); + } + else if (bEndnote && rSettings.get(DocumentSettingId::CONTINUOUS_ENDNOTES)) + { + // Endnotes at the end of the document. + SwPageFrame* pPage = m_rThis.getRootFrame()->GetLastPage(); + pRef = pPage->FindLastBodyContent(); + } + if( !pRef ) + // Endnotes on a separate page. + pRef = pFootnote->GetRef(); + + OSL_ENSURE( pRef, "MoveBwd: Endnote for an empty section?" ); + + if( !bEndnote ) + pOldBoss = pOldBoss->FindFootnoteBossFrame( true ); + SwFootnoteBossFrame *pRefBoss = pRef->FindFootnoteBossFrame( !bEndnote ); + if ( pOldBoss != pRefBoss && + + ( !bEndnote || + pRefBoss->IsBefore( pOldBoss ) ) + ) + pNewUpper = m_rThis.GetLeaf( MAKEPAGE_FTN, false ); + } + else if ( IsPageBreak( true ) ) // Do we have to respect a PageBreak? + { + // If the previous page doesn't have a Frame in the body, + // flowing back makes sense despite the PageBreak (otherwise, + // we'd get an empty page). + // Of course we need to overlook empty pages! + const SwFrame *pFlow = &m_rThis; + do + { + pFlow = pFlow->FindPrev(); + } while ( pFlow && + ( pFlow->FindPageFrame() == pOldPage || + !pFlow->IsInDocBody() ) ); + if ( pFlow ) + { + long nDiff = pOldPage->GetPhyPageNum() - pFlow->GetPhyPageNum(); + if ( nDiff > 1 ) + { + if ( static_cast<SwPageFrame*>(pOldPage->GetPrev())->IsEmptyPage() ) + nDiff -= 1; + if ( nDiff > 1 ) + { + pNewUpper = m_rThis.GetLeaf( MAKEPAGE_NONE, false ); + // i#53139 + // Now <pNewUpper> is a previous layout frame, which contains + // content. But the new upper layout frame has to be the next one. + // Thus, hack for issue i14206 no longer needed, but fix for issue 114442 + // Correct fix for i53139 + // Check for wrong page description before using next new upper. + // i#66051 - further correction of fix for i53139 + // Check for correct type of new next upper layout frame + // Another correction of fix for i53139 + // Assumption, that in all cases <pNewUpper> is a previous + // layout frame, which contains content, is wrong. + // Another correction of fix for i53139 + // Beside type check, check also, if proposed new next upper + // frame is inside the same frame types. + // i#73194 - and yet another correction + // of fix for i53139: + // Assure that the new next upper layout frame doesn't + // equal the current one. + // E.g.: content is on page 3, on page 2 is only a 'ghost' + // section and on page 1 is normal content. Method <FindPrev(..)> + // will find the last content of page 1, but <GetLeaf(..)> + // returns new upper on page 2. + if (pNewUpper && pNewUpper->Lower()) + { + SwLayoutFrame* pNewNextUpper = pNewUpper->GetLeaf( MAKEPAGE_NONE, true ); + if ( pNewNextUpper && + pNewNextUpper != m_rThis.GetUpper() && + pNewNextUpper->GetType() == pNewUpper->GetType() && + pNewNextUpper->IsInDocBody() == pNewUpper->IsInDocBody() && + pNewNextUpper->IsInFootnote() == pNewUpper->IsInFootnote() && + pNewNextUpper->IsInTab() == pNewUpper->IsInTab() && + pNewNextUpper->IsInSct() == pNewUpper->IsInSct() && + !m_rThis.WrongPageDesc( pNewNextUpper->FindPageFrame() ) ) + { + pNewUpper = pNewNextUpper; + bCheckPageDescOfNextPage = true; + } + } + + bCheckPageDescs = true; + } + } + } + } + else if ( IsColBreak( true ) ) + { + // If the previous column doesn't contain a ContentFrame, flowing back + // makes sense despite the ColumnBreak, as otherwise we'd get + // an empty column. + if( m_rThis.IsInSct() ) + { + pNewUpper = m_rThis.GetLeaf( MAKEPAGE_NONE, false ); + if( pNewUpper && !SwFlowFrame::IsMoveBwdJump() && + ( pNewUpper->ContainsContent() || + ( ( !pNewUpper->IsColBodyFrame() || + !pNewUpper->GetUpper()->GetPrev() ) && + !pNewUpper->FindSctFrame()->GetPrev() ) ) ) + { + pNewUpper = nullptr; + } + // i#53139 + // i#69409 - check <pNewUpper> + // i#71065 - check <SwFlowFrame::IsMoveBwdJump()> + else if ( pNewUpper && !SwFlowFrame::IsMoveBwdJump() ) + { + // Now <pNewUpper> is a previous layout frame, which + // contains content. But the new upper layout frame + // has to be the next one. + // Correct fix for i53139 + // Check for wrong page description before using next new upper. + // i#66051 - further correction of fix for i53139 + // Check for correct type of new next upper layout frame + // Another correction of fix for i53139 + // Beside type check, check also, if proposed new next upper + // frame is inside the same frame types. + SwLayoutFrame* pNewNextUpper = pNewUpper->GetLeaf( MAKEPAGE_NOSECTION, true ); + if ( pNewNextUpper && + pNewNextUpper->GetType() == pNewUpper->GetType() && + pNewNextUpper->IsInDocBody() == pNewUpper->IsInDocBody() && + pNewNextUpper->IsInFootnote() == pNewUpper->IsInFootnote() && + pNewNextUpper->IsInTab() == pNewUpper->IsInTab() && + pNewNextUpper->IsInSct() == pNewUpper->IsInSct() && + !m_rThis.WrongPageDesc( pNewNextUpper->FindPageFrame() ) ) + { + pNewUpper = pNewNextUpper; + } + } + } + else + { + const SwFrame *pCol = m_rThis.FindColFrame(); + bool bGoOn = true; + bool bJump = false; + do + { + if ( pCol->GetPrev() ) + pCol = pCol->GetPrev(); + else + { + bGoOn = false; + pCol = m_rThis.GetLeaf( MAKEPAGE_NONE, false ); + } + if ( pCol ) + { + // ColumnFrames now with BodyFrame + SwLayoutFrame* pColBody = pCol->IsColumnFrame() ? + const_cast<SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(pCol)->Lower())) : + const_cast<SwLayoutFrame*>(static_cast<const SwLayoutFrame*>(pCol)); + if ( pColBody->ContainsContent() ) + { + bGoOn = false; // We have content here! we accept this + // only if GetLeaf() has set the MoveBwdJump. + if( SwFlowFrame::IsMoveBwdJump() ) + { + pNewUpper = pColBody; + // i#53139 + // Now <pNewUpper> is a previous layout frame, which + // contains content. But the new upper layout frame + // has to be the next one. + // Correct fix for i53139 + // Check for wrong page description before using next new upper. + // i#66051 - further correction of fix for i53139 + // Check for correct type of new next upper layout frame + // Another correction of fix for i53139 + // Beside type check, check also, if proposed new next upper + // frame is inside the same frame types. + // i#71065 + // Check that the proposed new next upper layout + // frame isn't the current one. + SwLayoutFrame* pNewNextUpper = pNewUpper->GetLeaf( MAKEPAGE_NONE, true ); + if ( pNewNextUpper && + pNewNextUpper != m_rThis.GetUpper() && + pNewNextUpper->GetType() == pNewUpper->GetType() && + pNewNextUpper->IsInDocBody() == pNewUpper->IsInDocBody() && + pNewNextUpper->IsInFootnote() == pNewUpper->IsInFootnote() && + pNewNextUpper->IsInTab() == pNewUpper->IsInTab() && + pNewNextUpper->IsInSct() == pNewUpper->IsInSct() && + !m_rThis.WrongPageDesc( pNewNextUpper->FindPageFrame() ) ) + { + pNewUpper = pNewNextUpper; + } + } + } + else + { + if( pNewUpper ) // We already had an empty column, in other + bJump = true; // words we skipped one. + pNewUpper = pColBody; // this empty column could be considered, + // but we continue searching nevertheless. + } + } + } while( bGoOn ); + if( bJump ) + SwFlowFrame::SetMoveBwdJump( true ); + } + } + else // No breaks - we can flow back. + pNewUpper = m_rThis.GetLeaf( MAKEPAGE_NONE, false ); + + // i#27801 - no move backward of 'master' text frame, + // if - due to its object positioning - it isn't allowed to be on the new page frame + // i#44049 - add another condition for not moving backward + // If one of its objects has restarted the layout process, moving backward + // isn't sensible either. + // i#47697 - refine condition made for issue i44049 + // - allow move backward as long as the anchored object is only temporarily + // positions considering its wrapping style. + if ( pNewUpper && + m_rThis.IsTextFrame() && !IsFollow() ) + { + sal_uInt32 nToPageNum( 0 ); + const bool bMoveFwdByObjPos = SwLayouter::FrameMovedFwdByObjPos( + *(pOldPage->GetFormat()->GetDoc()), + static_cast<SwTextFrame&>(m_rThis), + nToPageNum ); + if ( bMoveFwdByObjPos && + pNewUpper->FindPageFrame()->GetPhyPageNum() < nToPageNum ) + { + pNewUpper = nullptr; + } + // i#44049 - check, if one of its anchored objects + // has restarted the layout process. + else if ( m_rThis.GetDrawObjs() ) + { + for (SwAnchoredObject* pAnchoredObj : *m_rThis.GetDrawObjs()) + { + // i#47697 - refine condition - see above + if ( pAnchoredObj->RestartLayoutProcess() && + !pAnchoredObj->IsTmpConsiderWrapInfluence() ) + { + pNewUpper = nullptr; + break; + } + } + } + } + + // With Follows, it's only allowed to flow back if there's no neighbor + // in the new environment (because that would be the Master). + // (6677) If however we skipped empty pages, we still have to move. + if ( pNewUpper && IsFollow() && pNewUpper->Lower() ) + { + // i#79774 + // neglect empty sections in proposed new upper frame + bool bProposedNewUpperContainsOnlyEmptySections( true ); + { + const SwFrame* pLower( pNewUpper->Lower() ); + while ( pLower ) + { + if ( pLower->IsSctFrame() && + !dynamic_cast<const SwSectionFrame*>(pLower)->GetSection() ) + { + pLower = pLower->GetNext(); + continue; + } + else + { + bProposedNewUpperContainsOnlyEmptySections = false; + break; + } + } + } + if ( !bProposedNewUpperContainsOnlyEmptySections ) + { + if ( SwFlowFrame::IsMoveBwdJump() ) + { + // Don't move after the Master, but into the next empty page. + SwFrame *pFrame = pNewUpper->Lower(); + while ( pFrame->GetNext() ) + pFrame = pFrame->GetNext(); + pNewUpper = pFrame->GetLeaf( MAKEPAGE_INSERT, true ); + if( pNewUpper == m_rThis.GetUpper() ) // Did we end up in the same place? + pNewUpper = nullptr; // If so, moving is not needed. + } + else + pNewUpper = nullptr; + } + } + if ( pNewUpper && !ShouldBwdMoved( pNewUpper, rbReformat ) ) + { + if( !pNewUpper->Lower() ) + { + if( pNewUpper->IsFootnoteContFrame() ) + { + pNewUpper->Cut(); + SwFrame::DestroyFrame(pNewUpper); + } + else + { + SwSectionFrame* pSectFrame = pNewUpper->FindSctFrame(); + + if ( pSectFrame && !pSectFrame->IsColLocked() && + !pSectFrame->ContainsContent() && !pSectFrame->ContainsAny( true ) ) + { + pSectFrame->DelEmpty( true ); + SwFrame::DestroyFrame(pSectFrame); + m_rThis.setFrameAreaPositionValid(true); + } + } + } + pNewUpper = nullptr; + } + + // i#21478 - don't move backward, if flow frame wants to + // keep with next frame and next frame is locked. + // i#38232 - If next frame is a table, do *not* check, + // if it's locked. + if ( pNewUpper && !IsFollow() && + m_rThis.GetAttrSet()->GetKeep().GetValue() && m_rThis.GetIndNext() ) + { + SwFrame* pIndNext = m_rThis.GetIndNext(); + // i#38232 + if ( !pIndNext->IsTabFrame() ) + { + // get first content of section, while empty sections are skipped + while ( pIndNext && pIndNext->IsSctFrame() ) + { + if( static_cast<SwSectionFrame*>(pIndNext)->GetSection() ) + { + SwFrame* pTmp = static_cast<SwSectionFrame*>(pIndNext)->ContainsAny(); + if ( pTmp ) + { + pIndNext = pTmp; + break; + } + } + pIndNext = pIndNext->GetIndNext(); + } + OSL_ENSURE( !pIndNext || dynamic_cast<const SwTextFrame*>( pIndNext) != nullptr, + "<SwFlowFrame::MovedBwd(..)> - incorrect next found." ); + if ( pIndNext && pIndNext->IsFlowFrame() && + SwFlowFrame::CastFlowFrame(pIndNext)->IsJoinLocked() ) + { + pNewUpper = nullptr; + } + } + } + + // i#65250 + // layout loop control for flowing content again and again moving + // backward under the same layout condition. + if ( pNewUpper && !IsFollow() && + pNewUpper != m_rThis.GetUpper() && + SwLayouter::MoveBwdSuppressed( *(pOldPage->GetFormat()->GetDoc()), + *this, *pNewUpper ) ) + { + SwLayoutFrame* pNextNewUpper = pNewUpper->GetLeaf( + ( !m_rThis.IsSctFrame() && m_rThis.IsInSct() ) + ? MAKEPAGE_NOSECTION + : MAKEPAGE_NONE, + true ); + // i#73194 - make code robust + OSL_ENSURE( pNextNewUpper, "<SwFlowFrame::MoveBwd(..)> - missing next new upper" ); + if ( pNextNewUpper && + ( pNextNewUpper == m_rThis.GetUpper() || + pNextNewUpper->GetType() != m_rThis.GetUpper()->GetType() ) ) + { + // tdf#107398 do not leave empty footnote container around + if (!pNewUpper->Lower() && pNewUpper->IsFootnoteContFrame()) + { + pNewUpper->Cut(); + SwFrame::DestroyFrame(pNewUpper); + } + pNewUpper = nullptr; + OSL_FAIL( "<SwFlowFrame::MoveBwd(..)> - layout loop control for layout action <Move Backward> applied!" ); + } + } + + OSL_ENSURE( pNewUpper != m_rThis.GetUpper(), + "<SwFlowFrame::MoveBwd(..)> - moving backward to the current upper frame!?" ); + if ( pNewUpper ) + { + PROTOCOL_ENTER( &m_rThis, PROT::MoveBack, DbgAction::NONE, nullptr ); + if ( pNewUpper->IsFootnoteContFrame() ) + { + // I may have gotten a Container + SwFootnoteFrame *pNew = SwFootnoteContFrame::PrependChained(&m_rThis, false); + pNew->Paste( pNewUpper ); + pNewUpper = pNew; + } + if( pNewUpper->IsFootnoteFrame() && m_rThis.IsInSct() ) + { + SwSectionFrame* pSct = m_rThis.FindSctFrame(); + // If we're in a section of a footnote, we may need to create + // a SwSectionFrame in the new upper + if( pSct->IsInFootnote() ) + { + SwFrame* pTmp = pNewUpper->Lower(); + if( pTmp ) + { + while( pTmp->GetNext() ) + pTmp = pTmp->GetNext(); + if( !pTmp->IsSctFrame() || + static_cast<SwSectionFrame*>(pTmp)->GetFollow() != pSct ) + pTmp = nullptr; + } + if( pTmp ) + pNewUpper = static_cast<SwSectionFrame*>(pTmp); + else + { + pSct = new SwSectionFrame( *pSct, true ); + pSct->Paste( pNewUpper ); + pSct->Init(); + pNewUpper = pSct; + pSct->SimpleFormat(); + } + } + } + bool bUnlock = false; + bool bFollow = false; + // Lock section. Otherwise, it could get destroyed if the only Content + // moves e.g. from the second into the first column. + SwSectionFrame* pSect = pNewUpper->FindSctFrame(); + if( pSect ) + { + bUnlock = !pSect->IsColLocked(); + pSect->ColLock(); + bFollow = pSect->HasFollow(); + } + + { + auto const pOld = m_rThis.GetUpper(); +#if BOOST_VERSION < 105600 + std::list<SwFrameDeleteGuard> g; +#else + ::std::optional<SwFrameDeleteGuard> g; +#endif + if (m_rThis.GetUpper()->IsCellFrame()) + { + // note: IsFollowFlowRow() is never set for new-style tables + SwTabFrame const*const pTabFrame(m_rThis.FindTabFrame()); + if ( pTabFrame->IsFollow() + && static_cast<SwTabFrame const*>(pTabFrame->GetPrecede())->HasFollowFlowLine() + && pTabFrame->GetFirstNonHeadlineRow() == m_rThis.GetUpper()->GetUpper()) + { + // lock follow-flow-row (similar to sections above) +#if BOOST_VERSION < 105600 + g.emplace_back(m_rThis.GetUpper()->GetUpper()); +#else + g.emplace(m_rThis.GetUpper()->GetUpper()); +#endif + assert(m_rThis.GetUpper()->GetUpper()->IsDeleteForbidden()); + } + } + pNewUpper->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + SAL_WARN_IF(pOld != m_rThis.GetUpper(), "sw.core", + "MoveBwd(): pNewUpper->Calc() moved this frame?"); + } + + m_rThis.Cut(); + + // optimization: format section, if its size is invalidated and if it's + // the new parent of moved backward frame. + bool bFormatSect( false ); + if( bUnlock ) + { + pSect->ColUnlock(); + if( pSect->HasFollow() != bFollow ) + { + pSect->InvalidateSize(); + // - optimization + if ( pSect == pNewUpper ) + bFormatSect = true; + } + } + + m_rThis.Paste( pNewUpper ); + // - optimization + if ( bFormatSect ) + pSect->Calc(m_rThis.getRootFrame()->GetCurrShell()->GetOut()); + + SwPageFrame *pNewPage = m_rThis.FindPageFrame(); + if( pNewPage != pOldPage ) + { + m_rThis.Prepare( PrepareHint::BossChanged, static_cast<const void*>(pOldPage), false ); + SwViewShell *pSh = m_rThis.getRootFrame()->GetCurrShell(); + if ( pSh && !pSh->Imp()->IsUpdateExpFields() ) + pSh->GetDoc()->getIDocumentFieldsAccess().SetNewFieldLst(true); // Will be done by CalcLayout() later on + + pNewPage->InvalidateSpelling(); + pNewPage->InvalidateSmartTags(); + pNewPage->InvalidateAutoCompleteWords(); + pNewPage->InvalidateWordCount(); + + // No <CheckPageDesc(..)> in online layout + if ( !( pSh && pSh->GetViewOptions()->getBrowseMode() ) ) + { + if ( bCheckPageDescs && pNewPage->GetNext() ) + { + SwPageFrame* pStartPage = bCheckPageDescOfNextPage ? + pNewPage : + static_cast<SwPageFrame*>(pNewPage->GetNext()); + SwFrame::CheckPageDescs( pStartPage, false); + } + else if (m_rThis.GetPageDescItem().GetPageDesc()) + { + // First page could get empty for example by disabling + // a section + SwFrame::CheckPageDescs( pNewPage, false); + } + } + } + } + return pNewUpper != nullptr; +} + +SwFlowFrame *SwFlowFrame::CastFlowFrame( SwFrame *pFrame ) +{ + if ( pFrame->IsContentFrame() ) + return static_cast<SwContentFrame*>(pFrame); + if ( pFrame->IsTabFrame() ) + return static_cast<SwTabFrame*>(pFrame); + if ( pFrame->IsSctFrame() ) + return static_cast<SwSectionFrame*>(pFrame); + return nullptr; +} + +const SwFlowFrame *SwFlowFrame::CastFlowFrame( const SwFrame *pFrame ) +{ + if ( pFrame->IsContentFrame() ) + return static_cast<const SwContentFrame*>(pFrame); + if ( pFrame->IsTabFrame() ) + return static_cast<const SwTabFrame*>(pFrame); + if ( pFrame->IsSctFrame() ) + return static_cast<const SwSectionFrame*>(pFrame); + return nullptr; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |