605 lines
19 KiB
C++
605 lines
19 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <breakit.hxx>
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#include <editeng/unolingu.hxx>
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#include <com/sun/star/i18n/WordType.hpp>
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#include <com/sun/star/i18n/XBreakIterator.hpp>
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#include <viewopt.hxx>
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#include <viewsh.hxx>
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#include <SwPortionHandler.hxx>
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#include "porhyph.hxx"
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#include "inftxt.hxx"
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#include "itrform2.hxx"
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#include "guess.hxx"
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#include <rootfrm.hxx>
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::linguistic2;
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using namespace ::com::sun::star::i18n;
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Reference< XHyphenatedWord > SwTextFormatInfo::HyphWord(
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const OUString &rText, const sal_Int32 nMinTrail )
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{
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if( rText.getLength() < 4 || m_pFnt->IsSymbol(m_pVsh) )
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return nullptr;
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Reference< XHyphenator > xHyph = ::GetHyphenator();
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Reference< XHyphenatedWord > xHyphWord;
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if( xHyph.is() )
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xHyphWord = xHyph->hyphenate( rText,
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g_pBreakIt->GetLocale( m_pFnt->GetLanguage() ),
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rText.getLength() - nMinTrail, GetHyphValues() );
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return xHyphWord;
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}
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/**
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* We format a row for interactive hyphenation
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*/
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bool SwTextFrame::Hyphenate(SwInterHyphInfoTextFrame & rHyphInf)
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{
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vcl::RenderContext* pRenderContext = getRootFrame()->GetCurrShell()->GetOut();
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OSL_ENSURE( ! IsVertical() || ! IsSwapped(),"swapped frame at SwTextFrame::Hyphenate" );
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assert(g_pBreakIt && g_pBreakIt->GetBreakIter().is());
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// We lock it, to start with
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OSL_ENSURE( !IsLocked(), "SwTextFrame::Hyphenate: this is locked" );
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// The frame::Frame must have a valid SSize!
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Calc(pRenderContext);
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GetFormatted();
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bool bRet = false;
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if( !IsEmpty() )
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{
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// We always need to enable hyphenation
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// Don't be afraid: the SwTextIter saves the old row in the hyphenate
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TextFrameLockGuard aLock( this );
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if ( IsVertical() )
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SwapWidthAndHeight();
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SwTextFormatInfo aInf( getRootFrame()->GetCurrShell()->GetOut(), this, true ); // true for interactive hyph!
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SwTextFormatter aLine( this, &aInf );
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aLine.CharToLine( rHyphInf.m_nStart );
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// If we're within the first word of a row, it could've been hyphenated
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// in the row earlier.
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// That's why we go one row back.
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if( aLine.Prev() )
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{
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SwLinePortion *pPor = aLine.GetCurr()->GetFirstPortion();
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while( pPor->GetNextPortion() )
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pPor = pPor->GetNextPortion();
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if( pPor->GetWhichPor() == PortionType::SoftHyphen ||
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pPor->GetWhichPor() == PortionType::SoftHyphenStr )
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aLine.Next();
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}
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const TextFrameIndex nEnd = rHyphInf.m_nEnd;
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while( !bRet && aLine.GetStart() < nEnd )
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{
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bRet = aLine.Hyphenate( rHyphInf );
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if( !aLine.Next() )
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break;
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}
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if ( IsVertical() )
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SwapWidthAndHeight();
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}
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return bRet;
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}
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/**
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* We format a row for interactive hyphenation
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* We can assume that we've already formatted.
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* We just reformat the row, the hyphenator will be prepared like
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* the UI expects it to be.
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* TODO: We can of course optimize this a lot.
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*/
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void SetParaPortion( SwTextInfo *pInf, SwParaPortion *pRoot )
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{
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OSL_ENSURE( pRoot, "SetParaPortion: no root anymore" );
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pInf->m_pPara = pRoot;
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}
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bool SwTextFormatter::Hyphenate(SwInterHyphInfoTextFrame & rHyphInf)
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{
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SwTextFormatInfo &rInf = GetInfo();
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// We never need to hyphenate anything in the last row
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// Except for, if it contains a FlyPortion or if it's the
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// last row of the Master
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if( !GetNext() && !rInf.GetTextFly().IsOn() && !m_pFrame->GetFollow() )
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return false;
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TextFrameIndex nWrdStart = m_nStart;
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// We need to retain the old row
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// E.g.: The attribute for hyphenation was not set, but
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// it's always set in SwTextFrame::Hyphenate, because we want
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// to set breakpoints.
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SwLineLayout *pOldCurr = m_pCurr;
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InitCntHyph();
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// 5298: IsParaLine() (ex.IsFirstLine) calls GetParaPortion().
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// We have to create the same conditions: in the first line
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// we format SwParaPortions...
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if( pOldCurr->IsParaPortion() )
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{
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SwParaPortion *pPara = new SwParaPortion();
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SetParaPortion( &rInf, pPara );
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m_pCurr = pPara;
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OSL_ENSURE( IsParaLine(), "SwTextFormatter::Hyphenate: not the first" );
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}
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else
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m_pCurr = new SwLineLayout();
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nWrdStart = FormatLine( nWrdStart );
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// You always should keep in mind that for example there are fields
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// which can be hyphenated
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if( m_pCurr->PrtWidth() && m_pCurr->GetLen() )
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{
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// We must be prepared that there are FlyFrames in the line,
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// at which line breaking is possible. So we search for the first
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// HyphPortion in the specified range.
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SwLinePortion *pPos = m_pCurr->GetNextPortion();
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const TextFrameIndex nPamStart = rHyphInf.m_nStart;
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nWrdStart = m_nStart;
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const TextFrameIndex nEnd = rHyphInf.m_nEnd;
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while( pPos )
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{
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// Either we are above or we are running into a HyphPortion
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// at the end of line or before a Fly.
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if( nWrdStart >= nEnd )
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{
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nWrdStart = TextFrameIndex(0);
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break;
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}
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if( nWrdStart >= nPamStart && pPos->InHyphGrp()
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&& ( !pPos->IsSoftHyphPortion()
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|| static_cast<SwSoftHyphPortion*>(pPos)->IsExpand() ) )
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{
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nWrdStart = nWrdStart + pPos->GetLen();
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break;
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}
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nWrdStart = nWrdStart + pPos->GetLen();
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pPos = pPos->GetNextPortion();
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}
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// When pPos is null, no hyphen position was found.
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if( !pPos )
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nWrdStart = TextFrameIndex(0);
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}
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else
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// In case the whole line is zero-length, that's the same situation as
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// above when the portion iteration ends without explicitly breaking
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// from the loop.
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nWrdStart = TextFrameIndex(0);
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// the old LineLayout is set again ...
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delete m_pCurr;
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m_pCurr = pOldCurr;
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if( pOldCurr->IsParaPortion() )
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{
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SetParaPortion( &rInf, static_cast<SwParaPortion*>(pOldCurr) );
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OSL_ENSURE( IsParaLine(), "SwTextFormatter::Hyphenate: even not the first" );
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}
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if (nWrdStart == TextFrameIndex(0))
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return false;
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// nWrdStart contains the position in string that should be hyphenated
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rHyphInf.m_nWordStart = nWrdStart;
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TextFrameIndex nLen(0);
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const TextFrameIndex nEnd = nWrdStart;
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// we search forwards
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Reference< XHyphenatedWord > xHyphWord;
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Boundary const aBound = g_pBreakIt->GetBreakIter()->getWordBoundary(
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rInf.GetText(), sal_Int32(nWrdStart),
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g_pBreakIt->GetLocale( rInf.GetFont()->GetLanguage() ), WordType::DICTIONARY_WORD, true );
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nWrdStart = TextFrameIndex(aBound.startPos);
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nLen = TextFrameIndex(aBound.endPos) - nWrdStart;
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if (nLen == TextFrameIndex(0))
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return false;
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OUString const aSelText(rInf.GetText().copy(sal_Int32(nWrdStart), sal_Int32(nLen)));
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const sal_Int32 nMinTrail = (nWrdStart + nLen > nEnd)
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? sal_Int32(nWrdStart + nLen - nEnd) - 1
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: 0;
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//!! rHyphInf.SetHyphWord( ... ) must done here
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xHyphWord = rInf.HyphWord( aSelText, nMinTrail );
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if ( xHyphWord.is() )
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{
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rHyphInf.SetHyphWord( xHyphWord );
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rHyphInf.m_nWordStart = nWrdStart;
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rHyphInf.m_nWordLen = nLen;
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return true;
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}
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return false;
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}
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bool SwTextPortion::CreateHyphen( SwTextFormatInfo &rInf, SwTextGuess const &rGuess )
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{
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const Reference< XHyphenatedWord >& xHyphWord = rGuess.HyphWord();
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OSL_ENSURE( !mpNextPortion, "SwTextPortion::CreateHyphen(): another portion, another planet..." );
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OSL_ENSURE( xHyphWord.is(), "SwTextPortion::CreateHyphen(): You are lucky! The code is robust here." );
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if( rInf.IsHyphForbud() ||
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mpNextPortion || // robust
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!xHyphWord.is() || // more robust
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// multi-line fields can't be hyphenated interactively
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( rInf.IsInterHyph() && InFieldGrp() ) )
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return false;
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std::unique_ptr<SwHyphPortion> pHyphPor;
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TextFrameIndex nPorEnd;
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SwTextSizeInfo aInf( rInf );
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// first case: hyphenated word has alternative spelling
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if ( xHyphWord->isAlternativeSpelling() )
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{
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SvxAlternativeSpelling aAltSpell = SvxGetAltSpelling( xHyphWord );
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OSL_ENSURE( aAltSpell.bIsAltSpelling, "no alternative spelling" );
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OUString aAltText = aAltSpell.aReplacement;
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nPorEnd = TextFrameIndex(aAltSpell.nChangedPos) + rGuess.BreakStart() - rGuess.FieldDiff();
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sal_Int32 nTmpLen = 0;
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// soft hyphen at alternative spelling position?
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if( rInf.GetText()[sal_Int32(rInf.GetSoftHyphPos())] == CHAR_SOFTHYPHEN )
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{
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pHyphPor.reset(new SwSoftHyphStrPortion( aAltText ));
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nTmpLen = 1;
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}
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else {
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pHyphPor.reset(new SwHyphStrPortion( aAltText ));
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}
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// length of pHyphPor is adjusted
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pHyphPor->SetLen( TextFrameIndex(aAltText.getLength() + 1) );
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static_cast<SwPosSize&>(*pHyphPor) = pHyphPor->GetTextSize( rInf );
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pHyphPor->SetLen( TextFrameIndex(aAltSpell.nChangedLength + nTmpLen) );
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}
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else
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{
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// second case: no alternative spelling
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pHyphPor.reset(new SwHyphPortion);
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pHyphPor->SetLen(TextFrameIndex(1));
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static const void* nLastFontCacheId = nullptr;
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static SwTwips aMiniCacheH = 0, aMiniCacheW = 0;
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const void* nTmpFontCacheId;
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sal_uInt16 nFntIdx;
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rInf.GetFont()->GetFontCacheId( nTmpFontCacheId, nFntIdx, rInf.GetFont()->GetActual() );
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if( !nLastFontCacheId || nLastFontCacheId != nTmpFontCacheId ) {
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nLastFontCacheId = nTmpFontCacheId;
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static_cast<SwPosSize&>(*pHyphPor) = pHyphPor->GetTextSize( rInf );
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aMiniCacheH = pHyphPor->Height();
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aMiniCacheW = pHyphPor->Width();
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} else {
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pHyphPor->Height( aMiniCacheH );
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pHyphPor->Width( aMiniCacheW );
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}
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pHyphPor->SetLen(TextFrameIndex(0));
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// values required for this
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nPorEnd = TextFrameIndex(xHyphWord->getHyphenPos() + 1)
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+ rGuess.BreakStart() - rGuess.FieldDiff();
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}
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// portion end must be in front of us
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// we do not put hyphens at start of line
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if ( nPorEnd > rInf.GetIdx() ||
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( nPorEnd == rInf.GetIdx() && rInf.GetLineStart() != rInf.GetIdx() ) )
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{
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aInf.SetLen( nPorEnd - rInf.GetIdx() );
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if (auto stClampedContext = aInf.GetLayoutContext(); stClampedContext.has_value())
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{
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stClampedContext->m_nEnd = nPorEnd.get();
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aInf.SetLayoutContext(stClampedContext);
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}
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pHyphPor->SetAscent( GetAscent() );
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SetLen( aInf.GetLen() );
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SetLayoutContext(aInf.GetLayoutContext());
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CalcTextSize( aInf );
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Insert( pHyphPor.release() );
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short nKern = rInf.GetFont()->CheckKerning();
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if( nKern )
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new SwKernPortion( *this, nKern );
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return true;
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}
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// last exit for the lost
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pHyphPor.reset();
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BreakCut( rInf, rGuess );
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return false;
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}
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bool SwHyphPortion::GetExpText( const SwTextSizeInfo &/*rInf*/, OUString &rText ) const
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{
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rText = "-";
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return true;
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}
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void SwHyphPortion::HandlePortion( SwPortionHandler& rPH ) const
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{
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rPH.Special( GetLen(), OUString('-'), GetWhichPor() );
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}
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void SwHyphPortion::dumpAsXml(xmlTextWriterPtr pWriter, const OUString& rText,
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TextFrameIndex& nOffset) const
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{
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(void)xmlTextWriterStartElement(pWriter, BAD_CAST("SwHyphPortion"));
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dumpAsXmlAttributes(pWriter, rText, nOffset);
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nOffset += GetLen();
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(void)xmlTextWriterEndElement(pWriter);
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}
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bool SwHyphPortion::Format( SwTextFormatInfo &rInf )
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{
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const SwLinePortion *pLast = rInf.GetLast();
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Height( pLast->Height() );
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SetAscent( pLast->GetAscent() );
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OUString aText;
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if( !GetExpText( rInf, aText ) )
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return false;
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PrtWidth( rInf.GetTextSize( aText ).Width() );
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const bool bFull = rInf.Width() <= rInf.X() + PrtWidth();
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if( bFull && !rInf.IsUnderflow() ) {
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Truncate();
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rInf.SetUnderflow( this );
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}
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return bFull;
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}
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bool SwHyphStrPortion::GetExpText( const SwTextSizeInfo &, OUString &rText ) const
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{
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rText = m_aExpand;
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return true;
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}
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void SwHyphStrPortion::HandlePortion( SwPortionHandler& rPH ) const
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{
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rPH.Special( GetLen(), m_aExpand, GetWhichPor() );
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}
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SwLinePortion *SwSoftHyphPortion::Compress() { return this; }
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SwSoftHyphPortion::SwSoftHyphPortion() :
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m_bExpand(false), m_nViewWidth(0)
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{
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SetLen(TextFrameIndex(1));
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SetWhichPor( PortionType::SoftHyphen );
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}
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SwTwips SwSoftHyphPortion::GetViewWidth(const SwTextSizeInfo& rInf) const
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{
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// Although we're in the const, nViewWidth should be calculated at
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// the last possible moment
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if( !Width() && rInf.OnWin() && rInf.GetOpt().IsSoftHyph() && !IsExpand() )
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{
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if( !m_nViewWidth )
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const_cast<SwSoftHyphPortion*>(this)->m_nViewWidth
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= rInf.GetTextSize(OUString('-')).Width();
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}
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else
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const_cast<SwSoftHyphPortion*>(this)->m_nViewWidth = 0;
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return m_nViewWidth;
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}
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/**
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* Cases:
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*
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* 1) SoftHyph is in the line, ViewOpt off
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* -> invisible, neighbors unchanged
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* 2) SoftHyph is in the line, ViewOpt on
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* -> visible, neighbors unchanged
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* 3) SoftHyph is at the end of the line, ViewOpt on or off
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* -> always visible, neighbors unchanged
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*/
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void SwSoftHyphPortion::Paint( const SwTextPaintInfo &rInf ) const
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{
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if ( Width() )
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{
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rInf.DrawViewOpt( *this, PortionType::SoftHyphen );
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SwExpandPortion::Paint( rInf );
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if (rInf.GetOpt().IsViewMetaChars() && !rInf.GetOpt().IsPrinting()
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&& !rInf.GetOpt().IsPDFExport())
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{
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OUString aMarker = u"-"_ustr;
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SwTextPaintInfo aInf(rInf, &aMarker);
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SwTextPortion aMarkerPor;
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SwPosSize aMarkerSize(rInf.GetTextSize(aMarker));
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aMarkerPor.Width(aMarkerSize.Width());
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aMarkerPor.Height(aMarkerSize.Height());
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aMarkerPor.SetAscent(GetAscent());
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Color colorBackup = aInf.GetFont()->GetColor();
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aInf.GetFont()->SetColor(SwViewOption::GetCurrentViewOptions().GetNonPrintingCharacterColor());
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aInf.DrawText(aMarkerPor, TextFrameIndex(aMarker.getLength()), true);
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aInf.GetFont()->SetColor(colorBackup);
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}
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}
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}
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/**
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* We get the final width from the FormatEOL()
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*
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* During the underflow-phase we determine, whether or not
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* there's an alternative spelling at all ...
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*
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* Case 1: "Au-to"
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* 1) {Au}{-}{to}, {to} does not fit anymore => underflow
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* 2) {-} calls hyphenate => no alternative
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* 3) FormatEOL() and bFull = true
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*
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* Case 2: "Zuc-ker"
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* 1) {Zuc}{-}{ker}, {ker} does not fit anymore => underflow
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* 2) {-} calls hyphenate => alternative!
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* 3) Underflow() and bFull = true
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* 4) {Zuc} calls hyphenate => {Zuk}{-}{ker}
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*/
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bool SwSoftHyphPortion::Format( SwTextFormatInfo &rInf )
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{
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bool bFull = true;
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// special case for old German spelling
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if( rInf.IsUnderflow() )
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{
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if( rInf.GetSoftHyphPos() )
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return true;
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const bool bHyph = rInf.ChgHyph( true );
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if( rInf.IsHyphenate() )
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{
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rInf.SetSoftHyphPos( rInf.GetIdx() );
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Width(0);
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// if the soft hyphened word has an alternative spelling
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// when hyphenated (old German spelling), the soft hyphen
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// portion has to trigger an underflow
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SwTextGuess aGuess;
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bFull = rInf.IsInterHyph() ||
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!aGuess.AlternativeSpelling(rInf, rInf.GetIdx() - TextFrameIndex(1));
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}
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rInf.ChgHyph( bHyph );
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|
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if( bFull && !rInf.IsHyphForbud() )
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{
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rInf.SetSoftHyphPos(TextFrameIndex(0));
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FormatEOL( rInf );
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if ( rInf.GetFly() )
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rInf.GetRoot()->SetMidHyph( true );
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else
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rInf.GetRoot()->SetEndHyph( true );
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}
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else
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{
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rInf.SetSoftHyphPos( rInf.GetIdx() );
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Truncate();
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rInf.SetUnderflow( this );
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}
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return true;
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}
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|
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rInf.SetSoftHyphPos(TextFrameIndex(0));
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SetExpand( true );
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bFull = SwHyphPortion::Format( rInf );
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SetExpand( false );
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if( !bFull )
|
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{
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// By default, we do not have a width, but we do have a height
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|
Width(0);
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|
}
|
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return bFull;
|
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}
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|
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/**
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* Format End of Line
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*/
|
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void SwSoftHyphPortion::FormatEOL( SwTextFormatInfo &rInf )
|
|
{
|
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if( IsExpand() )
|
|
return;
|
|
|
|
SetExpand( true );
|
|
if( rInf.GetLast() == this )
|
|
rInf.SetLast( FindPrevPortion( rInf.GetRoot() ) );
|
|
|
|
// We need to reset the old values
|
|
const SwTwips nOldX = rInf.X();
|
|
TextFrameIndex const nOldIdx = rInf.GetIdx();
|
|
rInf.X( rInf.X() - PrtWidth() );
|
|
rInf.SetIdx( rInf.GetIdx() - GetLen() );
|
|
const bool bFull = SwHyphPortion::Format( rInf );
|
|
|
|
// Shady business: We're allowed to get wider, but a Fly is also
|
|
// being processed, which needs a correct X position
|
|
if( bFull || !rInf.GetFly() )
|
|
rInf.X( nOldX );
|
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else
|
|
rInf.X( nOldX + Width() );
|
|
rInf.SetIdx( nOldIdx );
|
|
}
|
|
|
|
/**
|
|
* We're expanding:
|
|
* - if the special characters should be visible
|
|
* - if we're at the end of the line
|
|
* - if we're before a (real/emulated) line break
|
|
*/
|
|
bool SwSoftHyphPortion::GetExpText( const SwTextSizeInfo &rInf, OUString &rText ) const
|
|
{
|
|
if( IsExpand() || ( rInf.OnWin() && rInf.GetOpt().IsSoftHyph() ) ||
|
|
( GetNextPortion() && ( GetNextPortion()->InFixGrp() ||
|
|
GetNextPortion()->IsDropPortion() || GetNextPortion()->IsLayPortion() ||
|
|
GetNextPortion()->IsParaPortion() || GetNextPortion()->IsBreakPortion() ) ) )
|
|
{
|
|
return SwHyphPortion::GetExpText( rInf, rText );
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void SwSoftHyphPortion::HandlePortion( SwPortionHandler& rPH ) const
|
|
{
|
|
const PortionType nWhich = ! Width() ?
|
|
PortionType::SoftHyphenComp :
|
|
GetWhichPor();
|
|
rPH.Special( GetLen(), OUString('-'), nWhich );
|
|
}
|
|
|
|
void SwSoftHyphStrPortion::Paint( const SwTextPaintInfo &rInf ) const
|
|
{
|
|
// Bug or feature?:
|
|
// {Zu}{k-}{ker}, {k-} will be gray instead of {-}
|
|
rInf.DrawViewOpt( *this, PortionType::SoftHyphen );
|
|
SwHyphStrPortion::Paint( rInf );
|
|
}
|
|
|
|
SwSoftHyphStrPortion::SwSoftHyphStrPortion( std::u16string_view rStr )
|
|
: SwHyphStrPortion( rStr )
|
|
{
|
|
SetLen(TextFrameIndex(1));
|
|
SetWhichPor( PortionType::SoftHyphenStr );
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|