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Diffstat (limited to 'sw/source/core/text/itradj.cxx')
| -rw-r--r-- | sw/source/core/text/itradj.cxx | 841 |
1 files changed, 841 insertions, 0 deletions
diff --git a/sw/source/core/text/itradj.cxx b/sw/source/core/text/itradj.cxx new file mode 100644 index 000000000..64a53c3c4 --- /dev/null +++ b/sw/source/core/text/itradj.cxx @@ -0,0 +1,841 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#include <o3tl/safeint.hxx> + +#include <IDocumentSettingAccess.hxx> +#include <doc.hxx> + +#include "itrtxt.hxx" +#include "porglue.hxx" +#include "porlay.hxx" +#include "porfly.hxx" +#include "pormulti.hxx" +#include "portab.hxx" +#include <memory> + +#define MIN_TAB_WIDTH 60 + +using namespace ::com::sun::star; + +void SwTextAdjuster::FormatBlock( ) +{ + // Block format does not apply to the last line. + // And for tabs it doesn't exist out of tradition + // If we have Flys we continue. + + const SwLinePortion *pFly = nullptr; + + bool bSkip = !IsLastBlock() && + m_nStart + m_pCurr->GetLen() >= TextFrameIndex(GetInfo().GetText().getLength()); + + // Multi-line fields are tricky, because we need to check whether there are + // any other text portions in the paragraph. + if( bSkip ) + { + const SwLineLayout *pLay = m_pCurr->GetNext(); + while( pLay && !pLay->GetLen() ) + { + const SwLinePortion *pPor = m_pCurr->GetFirstPortion(); + while( pPor && bSkip ) + { + if( pPor->InTextGrp() ) + bSkip = false; + pPor = pPor->GetNextPortion(); + } + pLay = bSkip ? pLay->GetNext() : nullptr; + } + } + + if( bSkip ) + { + if( !GetInfo().GetParaPortion()->HasFly() ) + { + if( IsLastCenter() ) + CalcFlyAdjust( m_pCurr ); + m_pCurr->FinishSpaceAdd(); + return; + } + else + { + const SwLinePortion *pTmpFly = nullptr; + + // End at the last Fly + const SwLinePortion *pPos = m_pCurr->GetFirstPortion(); + while( pPos ) + { + // Look for the last Fly which has text coming after it: + if( pPos->IsFlyPortion() ) + pTmpFly = pPos; // Found a Fly + else if ( pTmpFly && pPos->InTextGrp() ) + { + pFly = pTmpFly; // A Fly with follow-up text! + pTmpFly = nullptr; + } + pPos = pPos->GetNextPortion(); + } + // End if we didn't find one + if( !pFly ) + { + if( IsLastCenter() ) + CalcFlyAdjust( m_pCurr ); + m_pCurr->FinishSpaceAdd(); + return; + } + } + } + + const TextFrameIndex nOldIdx = GetInfo().GetIdx(); + GetInfo().SetIdx( m_nStart ); + CalcNewBlock( m_pCurr, pFly ); + GetInfo().SetIdx( nOldIdx ); + GetInfo().GetParaPortion()->GetRepaint().SetOffset(0); +} + +static bool lcl_CheckKashidaPositions( SwScriptInfo& rSI, SwTextSizeInfo& rInf, SwTextIter& rItr, + sal_Int32& rKashidas, TextFrameIndex& nGluePortion) +{ + // i60594 validate Kashida justification + TextFrameIndex nIdx = rItr.GetStart(); + TextFrameIndex nEnd = rItr.GetEnd(); + + // Note on calling KashidaJustify(): + // Kashida positions may be marked as invalid. Therefore KashidaJustify may return the clean + // total number of kashida positions, or the number of kashida positions after some positions + // have been dropped. + // Here we want the clean total, which is OK: We have called ClearKashidaInvalid() before. + rKashidas = rSI.KashidaJustify ( nullptr, nullptr, rItr.GetStart(), rItr.GetLength() ); + + if (rKashidas <= 0) // nothing to do + return true; + + // kashida positions found in SwScriptInfo are not necessarily valid in every font + // if two characters are replaced by a ligature glyph, there will be no place for a kashida + std::vector<TextFrameIndex> aKashidaPos; + rSI.GetKashidaPositions(nIdx, rItr.GetLength(), aKashidaPos); + assert(aKashidaPos.size() >= o3tl::make_unsigned(rKashidas)); + std::vector<TextFrameIndex> aKashidaPosDropped(aKashidaPos.size()); + sal_Int32 nKashidaIdx = 0; + while ( rKashidas && nIdx < nEnd ) + { + rItr.SeekAndChgAttrIter( nIdx, rInf.GetOut() ); + TextFrameIndex nNext = rItr.GetNextAttr(); + + // is there also a script change before? + // if there is, nNext should point to the script change + TextFrameIndex const nNextScript = rSI.NextScriptChg( nIdx ); + if( nNextScript < nNext ) + nNext = nNextScript; + + if (nNext == TextFrameIndex(COMPLETE_STRING) || nNext > nEnd) + nNext = nEnd; + sal_Int32 nKashidasInAttr = rSI.KashidaJustify ( nullptr, nullptr, nIdx, nNext - nIdx ); + if (nKashidasInAttr > 0) + { + // Kashida glyph looks suspicious, skip Kashida justification + if ( rInf.GetOut()->GetMinKashida() <= 0 ) + { + return false; + } + + sal_Int32 nKashidasDropped = 0; + if ( !SwScriptInfo::IsArabicText( rInf.GetText(), nIdx, nNext - nIdx ) ) + { + nKashidasDropped = nKashidasInAttr; + rKashidas -= nKashidasDropped; + } + else + { + ComplexTextLayoutFlags nOldLayout = rInf.GetOut()->GetLayoutMode(); + rInf.GetOut()->SetLayoutMode ( nOldLayout | ComplexTextLayoutFlags::BiDiRtl ); + nKashidasDropped = rInf.GetOut()->ValidateKashidas( + rInf.GetText(), sal_Int32(nIdx), sal_Int32(nNext - nIdx), + nKashidasInAttr, + reinterpret_cast<sal_Int32*>(aKashidaPos.data() + nKashidaIdx), + reinterpret_cast<sal_Int32*>(aKashidaPosDropped.data())); + rInf.GetOut()->SetLayoutMode ( nOldLayout ); + if ( nKashidasDropped ) + { + rSI.MarkKashidasInvalid(nKashidasDropped, aKashidaPosDropped.data()); + rKashidas -= nKashidasDropped; + nGluePortion -= TextFrameIndex(nKashidasDropped); + } + } + nKashidaIdx += nKashidasInAttr; + } + nIdx = nNext; + } + + // return false if all kashidas have been eliminated + return (rKashidas > 0); +} + +static bool lcl_CheckKashidaWidth ( SwScriptInfo& rSI, SwTextSizeInfo& rInf, SwTextIter& rItr, sal_Int32& rKashidas, + TextFrameIndex& nGluePortion, const long nGluePortionWidth, long& nSpaceAdd ) +{ + // check kashida width + // if width is smaller than minimal kashida width allowed by fonts in the current line + // drop one kashida after the other until kashida width is OK + while (rKashidas) + { + bool bAddSpaceChanged = false; + TextFrameIndex nIdx = rItr.GetStart(); + TextFrameIndex nEnd = rItr.GetEnd(); + while ( nIdx < nEnd ) + { + rItr.SeekAndChgAttrIter( nIdx, rInf.GetOut() ); + TextFrameIndex nNext = rItr.GetNextAttr(); + + // is there also a script change before? + // if there is, nNext should point to the script change + TextFrameIndex const nNextScript = rSI.NextScriptChg( nIdx ); + if( nNextScript < nNext ) + nNext = nNextScript; + + if (nNext == TextFrameIndex(COMPLETE_STRING) || nNext > nEnd) + nNext = nEnd; + sal_Int32 nKashidasInAttr = rSI.KashidaJustify ( nullptr, nullptr, nIdx, nNext - nIdx ); + + long nFontMinKashida = rInf.GetOut()->GetMinKashida(); + if ( nFontMinKashida && nKashidasInAttr > 0 && SwScriptInfo::IsArabicText( rInf.GetText(), nIdx, nNext - nIdx ) ) + { + sal_Int32 nKashidasDropped = 0; + while ( rKashidas && nGluePortion && nKashidasInAttr > 0 && + nSpaceAdd / SPACING_PRECISION_FACTOR < nFontMinKashida ) + { + --nGluePortion; + --rKashidas; + --nKashidasInAttr; + ++nKashidasDropped; + if( !rKashidas || !nGluePortion ) // nothing left, return false to + return false; // do regular blank justification + + nSpaceAdd = nGluePortionWidth / sal_Int32(nGluePortion); + bAddSpaceChanged = true; + } + if( nKashidasDropped ) + rSI.MarkKashidasInvalid( nKashidasDropped, nIdx, nNext - nIdx ); + } + if ( bAddSpaceChanged ) + break; // start all over again + nIdx = nNext; + } + if ( !bAddSpaceChanged ) + break; // everything was OK + } + return true; +} + +// CalcNewBlock() must only be called _after_ CalcLine()! +// We always span between two RandPortions or FixPortions (Tabs and Flys). +// We count the Glues and call ExpandBlock. +void SwTextAdjuster::CalcNewBlock( SwLineLayout *pCurrent, + const SwLinePortion *pStopAt, SwTwips nReal, bool bSkipKashida ) +{ + OSL_ENSURE( GetInfo().IsMulti() || SvxAdjust::Block == GetAdjust(), + "CalcNewBlock: Why?" ); + OSL_ENSURE( pCurrent->Height(), "SwTextAdjuster::CalcBlockAdjust: missing CalcLine()" ); + + pCurrent->InitSpaceAdd(); + TextFrameIndex nGluePortion(0); + TextFrameIndex nCharCnt(0); + sal_uInt16 nSpaceIdx = 0; + + // i60591: hennerdrews + SwScriptInfo& rSI = GetInfo().GetParaPortion()->GetScriptInfo(); + SwTextSizeInfo aInf ( GetTextFrame() ); + SwTextIter aItr ( GetTextFrame(), &aInf ); + + if ( rSI.CountKashida() ) + { + while (aItr.GetCurr() != pCurrent && aItr.GetNext()) + aItr.Next(); + + if( bSkipKashida ) + { + rSI.SetNoKashidaLine ( aItr.GetStart(), aItr.GetLength()); + } + else + { + rSI.ClearKashidaInvalid ( aItr.GetStart(), aItr.GetLength() ); + rSI.ClearNoKashidaLine( aItr.GetStart(), aItr.GetLength() ); + } + } + + // Do not forget: CalcRightMargin() sets pCurrent->Width() to the line width! + if (!bSkipKashida) + CalcRightMargin( pCurrent, nReal ); + + // #i49277# + const bool bDoNotJustifyLinesWithManualBreak = + GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(DocumentSettingId::DO_NOT_JUSTIFY_LINES_WITH_MANUAL_BREAK); + bool bDoNotJustifyTab = false; + + SwLinePortion *pPos = pCurrent->GetNextPortion(); + + while( pPos ) + { + if ( ( bDoNotJustifyLinesWithManualBreak || bDoNotJustifyTab ) && + pPos->IsBreakPortion() && !IsLastBlock() ) + { + pCurrent->FinishSpaceAdd(); + break; + } + + switch ( pPos->GetWhichPor() ) + { + case PortionType::TabCenter : + case PortionType::TabRight : + case PortionType::TabDecimal : + bDoNotJustifyTab = true; + break; + case PortionType::TabLeft : + case PortionType::Break: + bDoNotJustifyTab = false; + break; + default: break; + } + + if ( pPos->InTextGrp() ) + nGluePortion = nGluePortion + static_cast<SwTextPortion*>(pPos)->GetSpaceCnt( GetInfo(), nCharCnt ); + else if( pPos->IsMultiPortion() ) + { + SwMultiPortion* pMulti = static_cast<SwMultiPortion*>(pPos); + // a multiportion with a tabulator inside breaks the text adjustment + // a ruby portion will not be stretched by text adjustment + // a double line portion takes additional space for each blank + // in the wider line + if( pMulti->HasTabulator() ) + { + if ( nSpaceIdx == pCurrent->GetLLSpaceAddCount() ) + pCurrent->SetLLSpaceAdd( 0, nSpaceIdx ); + + nSpaceIdx++; + nGluePortion = TextFrameIndex(0); + nCharCnt = TextFrameIndex(0); + } + else if( pMulti->IsDouble() ) + nGluePortion = nGluePortion + static_cast<SwDoubleLinePortion*>(pMulti)->GetSpaceCnt(); + else if ( pMulti->IsBidi() ) + nGluePortion = nGluePortion + static_cast<SwBidiPortion*>(pMulti)->GetSpaceCnt( GetInfo() ); // i60594 + } + + if( pPos->InGlueGrp() ) + { + if( pPos->InFixMargGrp() ) + { + if ( nSpaceIdx == pCurrent->GetLLSpaceAddCount() ) + pCurrent->SetLLSpaceAdd( 0, nSpaceIdx ); + + const long nGluePortionWidth = static_cast<SwGluePortion*>(pPos)->GetPrtGlue() * + SPACING_PRECISION_FACTOR; + + sal_Int32 nKashidas = 0; + if( nGluePortion && rSI.CountKashida() && !bSkipKashida ) + { + // kashida positions found in SwScriptInfo are not necessarily valid in every font + // if two characters are replaced by a ligature glyph, there will be no place for a kashida + if ( !lcl_CheckKashidaPositions ( rSI, aInf, aItr, nKashidas, nGluePortion )) + { + // all kashida positions are invalid + // do regular blank justification + pCurrent->FinishSpaceAdd(); + GetInfo().SetIdx( m_nStart ); + CalcNewBlock( pCurrent, pStopAt, nReal, true ); + return; + } + } + + if( nGluePortion ) + { + long nSpaceAdd = nGluePortionWidth / sal_Int32(nGluePortion); + + // i60594 + if( rSI.CountKashida() && !bSkipKashida ) + { + if( !lcl_CheckKashidaWidth( rSI, aInf, aItr, nKashidas, nGluePortion, nGluePortionWidth, nSpaceAdd )) + { + // no kashidas left + // do regular blank justification + pCurrent->FinishSpaceAdd(); + GetInfo().SetIdx( m_nStart ); + CalcNewBlock( pCurrent, pStopAt, nReal, true ); + return; + } + } + + pCurrent->SetLLSpaceAdd( nSpaceAdd , nSpaceIdx ); + pPos->Width( static_cast<SwGluePortion*>(pPos)->GetFixWidth() ); + } + else if (IsOneBlock() && nCharCnt > TextFrameIndex(1)) + { + const long nSpaceAdd = - nGluePortionWidth / (sal_Int32(nCharCnt) - 1); + pCurrent->SetLLSpaceAdd( nSpaceAdd, nSpaceIdx ); + pPos->Width( static_cast<SwGluePortion*>(pPos)->GetFixWidth() ); + } + + nSpaceIdx++; + nGluePortion = TextFrameIndex(0); + nCharCnt = TextFrameIndex(0); + } + else + ++nGluePortion; + } + GetInfo().SetIdx( GetInfo().GetIdx() + pPos->GetLen() ); + if ( pPos == pStopAt ) + { + pCurrent->SetLLSpaceAdd( 0, nSpaceIdx ); + break; + } + pPos = pPos->GetNextPortion(); + } +} + +SwTwips SwTextAdjuster::CalcKanaAdj( SwLineLayout* pCurrent ) +{ + OSL_ENSURE( pCurrent->Height(), "SwTextAdjuster::CalcBlockAdjust: missing CalcLine()" ); + OSL_ENSURE( !pCurrent->GetpKanaComp(), "pKanaComp already exists!!" ); + + pCurrent->SetKanaComp( std::make_unique<std::deque<sal_uInt16>>() ); + + const sal_uInt16 nNull = 0; + size_t nKanaIdx = 0; + long nKanaDiffSum = 0; + SwTwips nRepaintOfst = 0; + SwTwips nX = 0; + bool bNoCompression = false; + + // Do not forget: CalcRightMargin() sets pCurrent->Width() to the line width! + CalcRightMargin( pCurrent ); + + SwLinePortion* pPos = pCurrent->GetNextPortion(); + + while( pPos ) + { + if ( pPos->InTextGrp() ) + { + // get maximum portion width from info structure, calculated + // during text formatting + sal_uInt16 nMaxWidthDiff = GetInfo().GetMaxWidthDiff( pPos ); + + // check, if information is stored under other key + if ( !nMaxWidthDiff && pPos == pCurrent->GetFirstPortion() ) + nMaxWidthDiff = GetInfo().GetMaxWidthDiff( pCurrent ); + + // calculate difference between portion width and max. width + nKanaDiffSum += nMaxWidthDiff; + + // we store the beginning of the first compressible portion + // for repaint + if ( nMaxWidthDiff && !nRepaintOfst ) + nRepaintOfst = nX + GetLeftMargin(); + } + else if( pPos->InGlueGrp() && pPos->InFixMargGrp() ) + { + if ( nKanaIdx == pCurrent->GetKanaComp().size() ) + pCurrent->GetKanaComp().push_back( nNull ); + + long nRest; + + if ( pPos->InTabGrp() ) + { + nRest = ! bNoCompression && + ( pPos->Width() > MIN_TAB_WIDTH ) ? + pPos->Width() - MIN_TAB_WIDTH : + 0; + + // for simplifying the handling of left, right ... tabs, + // we do expand portions, which are lying behind + // those special tabs + bNoCompression = !pPos->IsTabLeftPortion(); + } + else + { + nRest = ! bNoCompression ? + static_cast<SwGluePortion*>(pPos)->GetPrtGlue() : + 0; + + bNoCompression = false; + } + + if( nKanaDiffSum ) + { + sal_uLong nCompress = ( 10000 * nRest ) / nKanaDiffSum; + + if ( nCompress >= 10000 ) + // kanas can be expanded to 100%, and there is still + // some space remaining + nCompress = 0; + + else + nCompress = 10000 - nCompress; + + ( pCurrent->GetKanaComp() )[ nKanaIdx ] = static_cast<sal_uInt16>(nCompress); + nKanaDiffSum = 0; + } + + nKanaIdx++; + } + + nX += pPos->Width(); + pPos = pPos->GetNextPortion(); + } + + // set portion width + nKanaIdx = 0; + sal_uInt16 nCompress = ( pCurrent->GetKanaComp() )[ nKanaIdx ]; + pPos = pCurrent->GetNextPortion(); + long nDecompress = 0; + + while( pPos ) + { + if ( pPos->InTextGrp() ) + { + const sal_uInt16 nMinWidth = pPos->Width(); + + // get maximum portion width from info structure, calculated + // during text formatting + sal_uInt16 nMaxWidthDiff = GetInfo().GetMaxWidthDiff( pPos ); + + // check, if information is stored under other key + if ( !nMaxWidthDiff && pPos == pCurrent->GetFirstPortion() ) + nMaxWidthDiff = GetInfo().GetMaxWidthDiff( pCurrent ); + pPos->Width( nMinWidth + + ( ( 10000 - nCompress ) * nMaxWidthDiff ) / 10000 ); + nDecompress += pPos->Width() - nMinWidth; + } + else if( pPos->InGlueGrp() && pPos->InFixMargGrp() ) + { + pPos->Width( static_cast<sal_uInt16>(pPos->Width() - nDecompress) ); + + if ( pPos->InTabGrp() ) + // set fix width to width + static_cast<SwTabPortion*>(pPos)->SetFixWidth( pPos->Width() ); + + if ( ++nKanaIdx < pCurrent->GetKanaComp().size() ) + nCompress = ( pCurrent->GetKanaComp() )[ nKanaIdx ]; + + nDecompress = 0; + } + pPos = pPos->GetNextPortion(); + } + + return nRepaintOfst; +} + +SwMarginPortion *SwTextAdjuster::CalcRightMargin( SwLineLayout *pCurrent, + SwTwips nReal ) +{ + long nRealWidth; + const sal_uInt16 nRealHeight = GetLineHeight(); + const sal_uInt16 nLineHeight = pCurrent->Height(); + + sal_uInt16 nPrtWidth = pCurrent->PrtWidth(); + SwLinePortion *pLast = pCurrent->FindLastPortion(); + + if( GetInfo().IsMulti() ) + nRealWidth = nReal; + else + { + nRealWidth = GetLineWidth(); + // For each FlyFrame extending into the right margin, we create a FlyPortion. + const long nLeftMar = GetLeftMargin(); + SwRect aCurrRect( nLeftMar + nPrtWidth, Y() + nRealHeight - nLineHeight, + nRealWidth - nPrtWidth, nLineHeight ); + + SwFlyPortion *pFly = CalcFlyPortion( nRealWidth, aCurrRect ); + while( pFly && long( nPrtWidth )< nRealWidth ) + { + pLast->Append( pFly ); + pLast = pFly; + if( pFly->GetFix() > nPrtWidth ) + pFly->Width( ( pFly->GetFix() - nPrtWidth) + pFly->Width() + 1); + nPrtWidth += pFly->Width() + 1; + aCurrRect.Left( nLeftMar + nPrtWidth ); + pFly = CalcFlyPortion( nRealWidth, aCurrRect ); + } + delete pFly; + } + + SwMarginPortion *pRight = new SwMarginPortion; + pLast->Append( pRight ); + + if( long( nPrtWidth )< nRealWidth ) + pRight->PrtWidth( sal_uInt16( nRealWidth - nPrtWidth ) ); + + // pCurrent->Width() is set to the real size, because we attach the + // MarginPortions. + // This trick gives miraculous results: + // If pCurrent->Width() == nRealWidth, then the adjustment gets overruled + // implicitly. GetLeftMarginAdjust() and IsJustified() think they have a + // line filled with chars. + + pCurrent->PrtWidth( sal_uInt16( nRealWidth ) ); + return pRight; +} + +void SwTextAdjuster::CalcFlyAdjust( SwLineLayout *pCurrent ) +{ + // 1) We insert a left margin: + SwMarginPortion *pLeft = pCurrent->CalcLeftMargin(); + SwGluePortion *pGlue = pLeft; // the last GluePortion + + // 2) We attach a right margin: + // CalcRightMargin also calculates a possible overlap with FlyFrames. + CalcRightMargin( pCurrent ); + + SwLinePortion *pPos = pLeft->GetNextPortion(); + TextFrameIndex nLen(0); + + // If we only have one line, the text portion is consecutive and we center, then ... + bool bComplete = TextFrameIndex(0) == m_nStart; + const bool bTabCompat = GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(DocumentSettingId::TAB_COMPAT); + bool bMultiTab = false; + + while( pPos ) + { + if ( pPos->IsMultiPortion() && static_cast<SwMultiPortion*>(pPos)->HasTabulator() ) + bMultiTab = true; + else if( pPos->InFixMargGrp() && + ( bTabCompat ? ! pPos->InTabGrp() : ! bMultiTab ) ) + { + // in tab compat mode we do not want to change tab portions + // in non tab compat mode we do not want to change margins if we + // found a multi portion with tabs + if( SvxAdjust::Right == GetAdjust() ) + static_cast<SwGluePortion*>(pPos)->MoveAllGlue( pGlue ); + else + { + // We set the first text portion to right-aligned and the last one + // to left-aligned. + // The first text portion gets the whole Glue, but only if we have + // more than one line. + if (bComplete && TextFrameIndex(GetInfo().GetText().getLength()) == nLen) + static_cast<SwGluePortion*>(pPos)->MoveHalfGlue( pGlue ); + else + { + if ( ! bTabCompat ) + { + if( pLeft == pGlue ) + { + // If we only have a left and right margin, the + // margins share the Glue. + if( nLen + pPos->GetLen() >= pCurrent->GetLen() ) + static_cast<SwGluePortion*>(pPos)->MoveHalfGlue( pGlue ); + else + static_cast<SwGluePortion*>(pPos)->MoveAllGlue( pGlue ); + } + else + { + // The last text portion retains its Glue. + if( !pPos->IsMarginPortion() ) + static_cast<SwGluePortion*>(pPos)->MoveHalfGlue( pGlue ); + } + } + else + static_cast<SwGluePortion*>(pPos)->MoveHalfGlue( pGlue ); + } + } + + pGlue = static_cast<SwGluePortion*>(pPos); + bComplete = false; + } + nLen = nLen + pPos->GetLen(); + pPos = pPos->GetNextPortion(); + } + + if( ! bTabCompat && ! bMultiTab && SvxAdjust::Right == GetAdjust() ) + // portions are moved to the right if possible + pLeft->AdjustRight( pCurrent ); +} + +void SwTextAdjuster::CalcAdjLine( SwLineLayout *pCurrent ) +{ + OSL_ENSURE( pCurrent->IsFormatAdj(), "CalcAdjLine: Why?" ); + + pCurrent->SetFormatAdj(false); + + SwParaPortion* pPara = GetInfo().GetParaPortion(); + + switch( GetAdjust() ) + { + case SvxAdjust::Right: + case SvxAdjust::Center: + { + CalcFlyAdjust( pCurrent ); + pPara->GetRepaint().SetOffset( 0 ); + break; + } + case SvxAdjust::Block: + { + FormatBlock(); + break; + } + default : return; + } +} + +// This is a quite complicated calculation: nCurrWidth is the width _before_ +// adding the word, that still fits onto the line! For this reason the FlyPortion's +// width is still correct if we get a deadlock-situation of: +// bFirstWord && !WORDFITS +SwFlyPortion *SwTextAdjuster::CalcFlyPortion( const long nRealWidth, + const SwRect &rCurrRect ) +{ + SwTextFly aTextFly( GetTextFrame() ); + + const sal_uInt16 nCurrWidth = m_pCurr->PrtWidth(); + SwFlyPortion *pFlyPortion = nullptr; + + SwRect aLineVert( rCurrRect ); + if ( GetTextFrame()->IsRightToLeft() ) + GetTextFrame()->SwitchLTRtoRTL( aLineVert ); + if ( GetTextFrame()->IsVertical() ) + GetTextFrame()->SwitchHorizontalToVertical( aLineVert ); + + // aFlyRect is document-global! + SwRect aFlyRect( aTextFly.GetFrame( aLineVert ) ); + + if ( GetTextFrame()->IsRightToLeft() ) + GetTextFrame()->SwitchRTLtoLTR( aFlyRect ); + if ( GetTextFrame()->IsVertical() ) + GetTextFrame()->SwitchVerticalToHorizontal( aFlyRect ); + + // If a Frame overlapps we open a Portion + if( aFlyRect.HasArea() ) + { + // aLocal is frame-local + SwRect aLocal( aFlyRect ); + aLocal.Pos( aLocal.Left() - GetLeftMargin(), aLocal.Top() ); + if( nCurrWidth > aLocal.Left() ) + aLocal.Left( nCurrWidth ); + + // If the rect is wider than the line, we adjust it to the right size + const long nLocalWidth = aLocal.Left() + aLocal.Width(); + if( nRealWidth < nLocalWidth ) + aLocal.Width( nRealWidth - aLocal.Left() ); + GetInfo().GetParaPortion()->SetFly(); + pFlyPortion = new SwFlyPortion( aLocal ); + pFlyPortion->Height( sal_uInt16( rCurrRect.Height() ) ); + // The Width could be smaller than the FixWidth, thus: + pFlyPortion->AdjFixWidth(); + } + return pFlyPortion; +} + +// CalcDropAdjust is called at the end by Format() if needed +void SwTextAdjuster::CalcDropAdjust() +{ + OSL_ENSURE( 1<GetDropLines() && SvxAdjust::Left!=GetAdjust() && SvxAdjust::Block!=GetAdjust(), + "CalcDropAdjust: No reason for DropAdjustment." ); + + const sal_uInt16 nLineNumber = GetLineNr(); + + // 1) Skip dummies + Top(); + + if( !m_pCurr->IsDummy() || NextLine() ) + { + // Adjust first + GetAdjusted(); + + SwLinePortion *pPor = m_pCurr->GetFirstPortion(); + + // 2) Make sure we include the ropPortion + // 3) pLeft is the GluePor preceding the DropPor + if( pPor->InGlueGrp() && pPor->GetNextPortion() + && pPor->GetNextPortion()->IsDropPortion() ) + { + const SwLinePortion *pDropPor = pPor->GetNextPortion(); + SwGluePortion *pLeft = static_cast<SwGluePortion*>( pPor ); + + // 4) pRight: Find the GluePor coming after the DropPor + pPor = pPor->GetNextPortion(); + while( pPor && !pPor->InFixMargGrp() ) + pPor = pPor->GetNextPortion(); + + SwGluePortion *pRight = ( pPor && pPor->InGlueGrp() ) ? + static_cast<SwGluePortion*>(pPor) : nullptr; + if( pRight && pRight != pLeft ) + { + // 5) Calculate nMinLeft. Who is the most to left? + const auto nDropLineStart = + GetLineStart() + pLeft->Width() + pDropPor->Width(); + auto nMinLeft = nDropLineStart; + for( sal_uInt16 i = 1; i < GetDropLines(); ++i ) + { + if( NextLine() ) + { + // Adjust first + GetAdjusted(); + + pPor = m_pCurr->GetFirstPortion(); + const SwMarginPortion *pMar = pPor->IsMarginPortion() ? + static_cast<SwMarginPortion*>(pPor) : nullptr; + if( !pMar ) + nMinLeft = 0; + else + { + const auto nLineStart = + GetLineStart() + pMar->Width(); + if( nMinLeft > nLineStart ) + nMinLeft = nLineStart; + } + } + } + + // 6) Distribute the Glue anew between pLeft and pRight + if( nMinLeft < nDropLineStart ) + { + // The Glue is always passed from pLeft to pRight, so that + // the text moves to the left. + const auto nGlue = nDropLineStart - nMinLeft; + if( !nMinLeft ) + pLeft->MoveAllGlue( pRight ); + else + pLeft->MoveGlue( pRight, nGlue ); + } + } + } + } + + if( nLineNumber != GetLineNr() ) + { + Top(); + while( nLineNumber != GetLineNr() && Next() ) + ; + } +} + +void SwTextAdjuster::CalcDropRepaint() +{ + Top(); + SwRepaint &rRepaint = GetInfo().GetParaPortion()->GetRepaint(); + if( rRepaint.Top() > Y() ) + rRepaint.Top( Y() ); + for( sal_uInt16 i = 1; i < GetDropLines(); ++i ) + NextLine(); + const SwTwips nBottom = Y() + GetLineHeight() - 1; + if( rRepaint.Bottom() < nBottom ) + rRepaint.Bottom( nBottom ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |