/* -*- 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 .
*/
/// @return true if any follow has the JoinLocked flag bool SwFlowFrame::HasLockedFollow() const
{ const SwFlowFrame* pFrame = GetFollow(); while( pFrame )
{ if( pFrame->IsJoinLocked() ) returntrue;
pFrame = pFrame->GetFollow();
} returnfalse;
}
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->IsHiddenNow())
pFrame = pFrame->GetIndPrev(); else returntrue;
} 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); while (pPre && pPre->IsHiddenNow())
{
pPre = pPre->GetIndPrev();
} if (!pPre)
{ return;
} if( pPre->IsSctFrame() )
{
SwFrame *pLast = static_cast<SwSectionFrame*>(pPre)->FindLastContent(); while (pLast && pLast->IsHiddenNow())
{
pLast = pLast->GetIndPrev();
} if( pLast && pLast->FindSctFrame() == pPre )
pPre = pLast; else return;
}
SwFrame* pTmp{pPre}; bool bKeep; while ( (bKeep = pPre->GetAttrSet()->GetKeep().GetValue()) &&
nullptr != (pTmp = pTmp->GetIndPrev()) )
{ if (pTmp->IsHiddenNow())
{ continue;
} if( pTmp->IsSctFrame() )
{
SwFrame *pLast = static_cast<SwSectionFrame*>(pTmp)->FindLastContent(); while (pLast && pLast->IsHiddenNow())
{
pLast = pLast->GetIndPrev();
} if( pLast && pLast->FindSctFrame() == pTmp )
pTmp = pLast; else break;
}
pPre = pTmp;
} if ( bKeep )
pPre->InvalidatePos();
}
namespace
{ /** * Determines if the next content frame after rThis will require the full area of the parent body * frame.
*/ bool IsNextContentFullPage(const SwFrame& rThis)
{ const SwFrame* pNext = rThis.FindNextCnt(); if (!pNext)
{ returnfalse;
}
// At this point the height of the draw object will use all the vertical available space, // and also no wrapping will be performed, so all horizontal space will be taken as well. returntrue;
}
returnfalse;
}
}
bool SwFlowFrame::IsKeep(SvxFormatKeepItem const& rKeep,
SvxFormatBreakItem const& rBreak, boolconst bCheckIfLastRowShouldKeep) const
{
assert(m_rThis.IsTextFrame() ? !static_cast<SwTextFrame const&>(m_rThis).IsHiddenNowImpl() : !m_rThis.IsHiddenNow()); // check it before? // 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) // 4. Keep is ignored if the next frame will require its own page. bool bKeep = bCheckIfLastRowShouldKeep ||
( !m_rThis.IsInFootnote() &&
( !m_rThis.IsInTab() || m_rThis.IsTabFrame() ) &&
rKeep.GetValue() && !IsNextContentFullPage(m_rThis));
if (bKeep && m_rThis.IsTextFrame())
{ auto& rTextFrame = static_cast<SwTextFrame&>(m_rThis); if (rTextFrame.HasNonLastSplitFlyDrawObj())
{ // Allow split for the non-last anchors of a split fly, even if rKeep.GetValue() is // true.
bKeep = false;
}
}
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 (pPageDesc->GetPageDesc())
bKeep = false; elseswitch (pBreak->GetBreak())
{ case SvxBreak::ColumnBefore: case SvxBreak::ColumnBoth: case SvxBreak::PageBefore: case SvxBreak::PageBoth:
bKeep = false; break; default: break;
}
}
}
}
} return bKeep;
}
SwFrame * SwFlowFrame::FindPrevIgnoreHidden() const
{
SwFrame * pRet{m_rThis.FindPrev()}; while (pRet && pRet->IsHiddenNow())
{
pRet = pRet->FindPrev();
} return pRet;
}
SwFrame * SwFlowFrame::FindNextIgnoreHidden() const
{
SwFrame * pRet{m_rThis.FindNext()}; while (pRet && pRet->IsHiddenNow())
{
pRet = pRet->FindNext();
} return pRet;
}
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;
SwNodeOffset nIndex = NODE_OFFSET_MAX; for ( size_t i = 0; nRet < 3 && i < rObjs.size(); ++i )
{
// 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 ( pFormat->GetAnchor().GetAnchorId() == RndStdIds::FLY_AT_PARA )
{ // The index of the other one can be retrieved using the anchor attribute.
SwNodeOffset nTmpIndex = pFormat->GetAnchor().GetAnchorNode()->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( NODE_OFFSET_MAX == nIndex )
{ const SwNode *pNode; if (m_rThis.IsTextFrame())
pNode = static_cast<SwTextFrame&>(m_rThis).GetTextNodeFirst(); elseif (m_rThis.IsNoTextFrame())
pNode = static_cast<SwNoTextFrame&>(m_rThis).GetNode(); elseif( 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 )
{
pStart->mpPrev = pSibling->GetPrev(); if ( nullptr != pStart->mpPrev )
pStart->GetPrev()->mpNext = pStart; else
pParent->m_pLower = pStart;
pSibling->InvalidatePos_();
pSibling->InvalidatePrt_();
} else
{
pStart->mpPrev = pParent->Lower(); if ( nullptr == pStart->mpPrev )
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->InvalidateInfFlags();
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;
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 );
// 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;
} elseif ( 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();
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)
// 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 constbool isRightPage = oTmp ? sw::IsRightPageByNumber(*mpRoot, *oTmp) : pNew->OnRightPage(); if ( !pDesc )
pDesc = pNew->FindPageDesc();
/// 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." );
constbool 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.
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." );
constbool bBody = IsInDocBody(); // If I'm coming from the DocBody, // I want to end up in the body. constbool bFly = IsInFly();
while ( pLayLeaf )
{ if ( pLayLeaf->IsInTab() || // Never go into tables.
pLayLeaf->IsInSct() ) // Same goes for sections!
pLayLeaf = pLayLeaf->GetPrevLayoutLeaf(); elseif ( bBody && pLayLeaf->IsInDocBody() )
{ if ( pLayLeaf->Lower() ) break;
pPrevLeaf = pLayLeaf;
pLayLeaf = pLayLeaf->GetPrevLayoutLeaf(); if ( pLayLeaf )
SwFlowFrame::SetMoveBwdJump( true );
} elseif ( 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.
if ( pPre && pPre->GetDrawObjs() )
{
OSL_ENSURE( SwFlowFrame::CastFlowFrame( pPre ), "new flowfrm?" ); if( SwFlowFrame::CastFlowFrame( pPre )->IsAnFollow( this ) ) returnfalse; if (SwFlowFrame::CastFlowFrame(pPre)->IsJoinLocked())
{
SwBorderAttrAccess baa(SwFrame::GetCache(), pPre);
SwBorderAttrs const& rAttrs(*baa.Get()); if (SwFlowFrame::CastFlowFrame(pPre)->IsKeep(rAttrs.GetAttrSet().GetKeep(), pPre->GetBreakItem()))
{ // pPre is currently being formatted - maybe it moved back but // its objects still have the old page's body as // mpVertPosOrientFrame and SwContentFrame::MakeAll() is calling // pNxt->Calc() in this case so allow this frame to move back returnfalse; // too, else pPre is forced to move forward again.
}
}
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(); elseif( 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())
{ const SwFrameFormat* pObjFormat = pObj->GetFrameFormat(); // Do not consider hidden objects // i#26945 - do not consider object, which // doesn't follow the text flow. if ( pObjFormat->GetDoc().getIDocumentDrawModelAccess().IsVisibleLayerId(
pObj->GetDrawObj()->GetLayer() ) &&
pObjFormat->GetFollowTextFlow().GetValue() )
{ const SwLayoutFrame* pVertPosOrientFrame = pObj->GetVertPosOrientFrame(); if ( pVertPosOrientFrame &&
pPreUp != pVertPosOrientFrame &&
!pPreUp->IsAnLower( pVertPosOrientFrame ) )
{ returntrue;
}
}
}
} returnfalse;
}
/** |* 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() ) returnfalse;
/** |* 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->IsHiddenNow() ) )
pPrev = pPrev->FindPrev();
if ( pPrev )
{ if ( bAct )
{ if ( pCol == pPrev->FindColFrame() ) returnfalse;
} else
{ if ( pCol != pPrev->FindColFrame() ) returnfalse;
}
// Skip hidden paragraphs and empty sections staticconst SwFrame* skipHiddenFrames_(const SwFrame* pFrame)
{ do
{
pFrame = skipHiddenSiblingFrames_(pFrame); if (!pFrame || !pFrame->IsSctFrame()) return pFrame; // Special case: found previous frame is a section // Search for the last content in the section auto pSectFrame = static_cast<const SwSectionFrame*>(pFrame);
pFrame = pSectFrame->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 (pFrame && pFrame->IsInTab())
{ const SwTabFrame* pTableFrame = pFrame->FindTabFrame(); if (pSectFrame->IsAnLower(pTableFrame)) return pTableFrame;
}
} while (true);
}
/** helper method to determine previous frame for calculation of the upper space
// 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 const SwFootnoteFrame* pPrevFootnoteFrame = static_cast<const SwFootnoteFrame*>(m_rThis.FindFootnoteFrame()->GetPrev()); if ( pPrevFootnoteFrame ) return skipHiddenFrames_(pPrevFootnoteFrame->GetLastLower());
return nullptr;
}
// This should be renamed to something like lcl_UseULSpacing /// Compare styles attached to these text frames. staticbool lcl_IdenticalStyles(const SwFrame* pPrevFrame, const SwFrame* pFrame, bool bAllowAcrossSections = false)
{ if (!pFrame || !pFrame->IsTextFrame()) returnfalse;
// Identical styles only applies if "the paragraphs belong to the same content area". if (!bAllowAcrossSections && pPrevFrame && pPrevFrame->FindSctFrame() != pFrame->FindSctFrame()) returnfalse;
// are we even allowed to consolidate the below and above spacing between paragraphs? if (rIDSA.get(DocumentSettingId::PARA_SPACE_MAX)) // DontUseHTMLAutoSpacing return;
// Anything related to tables is skipped simply to avoid potential disaster if (!pPrevPara || pPrevPara->IsInTab()) return;
// MSO skips space between same-style paragraphs even at a sectionPageBreak. constbool bContextualSpacing = pTextFrame->GetAttrSet()->GetULSpace().GetContext(); constbool bIdenticalStyles
= bContextualSpacing
&& lcl_IdenticalStyles(pPrevPara, pTextFrame, /*AllowAcrossSections*/ true); if (bIdenticalStyles)
rUpper = 0; else
{ // MSO is also hyper-consistent about consolidating // the lower-space from the previous paragraph // with the upper spacing of this paragraph const SwTwips nPrevLowerSpace
= pPrevPara->GetAttrSet()->GetULSpace().GetLower();
rUpper = std::max<SwTwips>(rUpper - nPrevLowerSpace, 0);
}
}
// tdf#125893 always ignore own top margin setting of the actual paragraph // with contextual spacing, if the previous paragraph is identical constbool bHalfContextualSpacing = !bContextualSpacing
&& bContextualSpacingThis
&& !bContextualSpacingPrev
&& bIdenticalStyles;
// tdf#134463 always ignore own bottom margin setting of the previous paragraph // with contextual spacing, if the actual paragraph is identical constbool bHalfContextualSpacingPrev = !bContextualSpacing
&& !bContextualSpacingThis
&& bContextualSpacingPrev
&& bIdenticalStyles;
// 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 bPrevLineSpacingProportional = false;
GetSpacingValuesOfFrame( (*pPrevFrame),
nPrevLowerSpace, nPrevLineSpacing,
bPrevLineSpacingProportional,
bIdenticalStyles); 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, SwTwips(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 ( bPrevLineSpacingProportional )
{
nAdd += static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true );
} else
{
nAdd = std::max( nAdd, SwTwips(static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true )) );
}
}
nUpper += nAdd;
}
} else
{
nUpper = bContextualSpacing ? 0 : std::max(
bHalfContextualSpacingPrev ? 0 : static_cast<tools::Long>(nPrevLowerSpace),
bHalfContextualSpacing ? 0 : static_cast<tools::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, SwTwips(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 ( bPrevLineSpacingProportional )
{
nAdd += static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true );
} else
{
nAdd = std::max( nAdd, SwTwips(static_cast<SwTextFrame*>(pOwn)->GetLineSpace( true )) );
}
}
nUpper += nAdd;
}
}
} elseif ( rIDSA.get(DocumentSettingId::PARA_SPACE_MAX_AT_PAGES) &&
CastFlowFrame( pOwn )->HasParaSpaceAtPages( m_rThis.IsSctFrame() ) )
{
nUpper = pAttrs->GetULSpace().GetUpper();
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