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/* -*- 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 <txatritr.hxx>
#include <com/sun/star/i18n/ScriptType.hpp>
#include <com/sun/star/i18n/XBreakIterator.hpp>
#include <fchrfmt.hxx>
#include <charfmt.hxx>
#include <breakit.hxx>
#include <ndtxt.hxx>
#include <txatbase.hxx>
using namespace ::com::sun::star;
SwScriptIterator::SwScriptIterator(
const OUString& rStr, sal_Int32 nStt, bool const bFrwrd)
: m_rText(rStr)
, m_nChgPos(rStr.getLength())
, m_nCurScript(i18n::ScriptType::WEAK)
, m_bForward(bFrwrd)
{
assert(g_pBreakIt && g_pBreakIt->GetBreakIter().is());
if ( ! bFrwrd && nStt )
--nStt;
sal_Int32 nPos = nStt;
m_nCurScript = g_pBreakIt->GetBreakIter()->getScriptType(m_rText, nPos);
if( i18n::ScriptType::WEAK == m_nCurScript )
{
if( nPos )
{
nPos = g_pBreakIt->GetBreakIter()->beginOfScript(
m_rText, nPos, m_nCurScript);
if (nPos > 0 && nPos < m_rText.getLength())
{
nStt = --nPos;
m_nCurScript =
g_pBreakIt->GetBreakIter()->getScriptType(m_rText,nPos);
}
}
}
m_nChgPos = m_bForward
? g_pBreakIt->GetBreakIter()->endOfScript(
m_rText, nStt, m_nCurScript)
: g_pBreakIt->GetBreakIter()->beginOfScript(
m_rText, nStt, m_nCurScript);
}
void SwScriptIterator::Next()
{
assert(g_pBreakIt && g_pBreakIt->GetBreakIter().is());
if (m_bForward && m_nChgPos >= 0 && m_nChgPos < m_rText.getLength())
{
m_nCurScript =
g_pBreakIt->GetBreakIter()->getScriptType(m_rText, m_nChgPos);
m_nChgPos = g_pBreakIt->GetBreakIter()->endOfScript(
m_rText, m_nChgPos, m_nCurScript);
}
else if (!m_bForward && m_nChgPos > 0)
{
--m_nChgPos;
m_nCurScript =
g_pBreakIt->GetBreakIter()->getScriptType(m_rText, m_nChgPos);
m_nChgPos = g_pBreakIt->GetBreakIter()->beginOfScript(
m_rText, m_nChgPos, m_nCurScript);
}
}
SwLanguageIterator::SwLanguageIterator( const SwTextNode& rTNd,
sal_Int32 nStt )
: m_aScriptIter( rTNd.GetText(), nStt ),
m_rTextNode( rTNd ),
m_pParaItem( nullptr ),
m_nAttrPos( 0 ),
m_nChgPos( nStt )
{
SearchNextChg();
}
bool SwLanguageIterator::Next()
{
bool bRet = false;
if (m_nChgPos < m_aScriptIter.GetText().getLength())
{
bRet = true;
if( !m_aStack.empty() )
{
do {
const SwTextAttr* pHt = m_aStack.front();
const sal_Int32 nEndPos = *pHt->End();
if( m_nChgPos >= nEndPos )
m_aStack.pop_front();
else
break;
} while( !m_aStack.empty() );
}
if( !m_aStack.empty() )
{
const size_t nSavePos = m_nAttrPos;
SearchNextChg();
if( !m_aStack.empty() )
{
const SwTextAttr* pHt = m_aStack.front();
const sal_Int32 nEndPos = *pHt->End();
if( m_nChgPos >= nEndPos )
{
m_nChgPos = nEndPos;
m_nAttrPos = nSavePos;
if( RES_TXTATR_CHARFMT == pHt->Which() )
{
const sal_uInt16 nWId = GetWhichOfScript( RES_CHRATR_LANGUAGE, m_aScriptIter.GetCurrScript() );
m_pCurrentItem = &pHt->GetCharFormat().GetCharFormat()->GetFormatAttr(nWId);
}
else
m_pCurrentItem = &pHt->GetAttr();
m_aStack.pop_front();
}
}
}
else
SearchNextChg();
}
return bRet;
}
void SwLanguageIterator::AddToStack( const SwTextAttr& rAttr )
{
size_t nIns = 0;
const sal_Int32 nEndPos = *rAttr.End();
for( ; nIns < m_aStack.size(); ++nIns )
if( *m_aStack[ nIns ]->End() > nEndPos )
break;
m_aStack.insert( m_aStack.begin() + nIns, &rAttr );
}
void SwLanguageIterator::SearchNextChg()
{
sal_uInt16 nWh = 0;
if( m_nChgPos == m_aScriptIter.GetScriptChgPos() )
{
m_aScriptIter.Next();
m_pParaItem = nullptr;
m_nAttrPos = 0; // must be restart at the beginning, because
// some attributes can start before or inside
// the current scripttype!
m_aStack.clear();
}
if( !m_pParaItem )
{
nWh = GetWhichOfScript( RES_CHRATR_LANGUAGE, m_aScriptIter.GetCurrScript() );
m_pParaItem = &m_rTextNode.GetSwAttrSet().Get( nWh );
}
sal_Int32 nStt = m_nChgPos;
m_nChgPos = m_aScriptIter.GetScriptChgPos();
m_pCurrentItem = m_pParaItem;
const SwpHints* pHts = m_rTextNode.GetpSwpHints();
if( !pHts )
return;
if( !nWh )
{
nWh = GetWhichOfScript( RES_CHRATR_LANGUAGE, m_aScriptIter.GetCurrScript() );
}
const SfxPoolItem* pItem = nullptr;
for( ; m_nAttrPos < pHts->Count(); ++m_nAttrPos )
{
const SwTextAttr* pHt = pHts->Get( m_nAttrPos );
const sal_Int32* pEnd = pHt->End();
const sal_Int32 nHtStt = pHt->GetStart();
if( nHtStt < nStt && ( !pEnd || *pEnd <= nStt ))
continue;
if( nHtStt >= m_nChgPos )
break;
pItem = CharFormat::GetItem( *pHt, nWh );
if ( pItem )
{
if( nHtStt > nStt )
{
if( m_nChgPos > nHtStt )
m_nChgPos = nHtStt;
break;
}
AddToStack( *pHt );
m_pCurrentItem = pItem;
if( *pEnd < m_nChgPos )
m_nChgPos = *pEnd;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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