/* -*- 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 <editeng/unolingu.hxx>
#include <breakit.hxx>
#include <IDocumentSettingAccess.hxx>
#include "guess.hxx"
#include "inftxt.hxx"
#include <pagefrm.hxx>
#include <tgrditem.hxx>
#include <com/sun/star/i18n/BreakType.hpp>
#include <com/sun/star/i18n/WordType.hpp>
#include <com/sun/star/i18n/XBreakIterator.hpp>
#include <com/sun/star/text/ParagraphHyphenationKeepType.hpp>
#include <unotools/charclass.hxx>
#include <svl/urihelper.hxx>
#include "porfld.hxx"
#include <paratr.hxx>
#include <doc.hxx>
#include <unotools/linguprops.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::i18n;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::linguistic2;
namespace{
bool IsBlank(sal_Unicode ch) { return ch == CH_BLANK || ch == CH_FULL_BLANK || ch == CH_NB_SPACE || ch == CH_SIX_PER_EM; }
// Used when spaces should not be counted in layout
// Returns adjusted cut position
TextFrameIndex AdjustCutPos(TextFrameIndex cutPos, TextFrameIndex& rBreakPos,
const SwTextFormatInfo& rInf)
{
assert(cutPos >= rInf.GetIdx());
TextFrameIndex x = rBreakPos = cutPos;
// we step back until a non blank character has been found
// or there is only one more character left
while (x && x > rInf.GetIdx() + TextFrameIndex(1) && IsBlank(rInf.GetChar(--x)))
--rBreakPos;
while (IsBlank(rInf.GetChar(cutPos)))
++cutPos;
return cutPos;
}
bool hasBlanksInLine(const SwTextFormatInfo& rInf, TextFrameIndex end)
{
for (auto x = rInf.GetLineStart(); x < end; ++x)
if (IsBlank(rInf.GetChar(x)))
return true;
return false;
}
}
// Called for the last text run in a line; if it is block-adjusted, or center / right-adjusted
// with Word compatibility option set, and it has trailing spaces, then the function sets the
// values, and returns 'false' value that SwTextGuess::Guess should return, to create a
// trailing SwHolePortion.
bool SwTextGuess::maybeAdjustPositionsForBlockAdjust(tools::Long& rMaxSizeDiff,
SwTwips& rExtraAscent, SwTwips& rExtraDescent,
const SwTextFormatInfo& rInf, const SwScriptInfo& rSI,
sal_uInt16 maxComp,
std::optional<SwLinePortionLayoutContext> nLayoutContext)
{
const auto& adjObj = rInf.GetTextFrame()->GetTextNodeForParaProps()->GetSwAttrSet().GetAdjust();
const SvxAdjust adjust = adjObj.GetAdjust();
if (adjust == SvxAdjust::Block)
{
if (rInf.DontBlockJustify())
return true; // See tdf#106234
}
else
{
// tdf#104668 space chars at the end should be cut if the compatibility option is enabled
if (!rInf.GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(
DocumentSettingId::MS_WORD_COMP_TRAILING_BLANKS))
return true;
// for LTR mode only
if (rInf.GetTextFrame()->IsRightToLeft())
return true;
}
if (auto ch = rInf.GetChar(m_nCutPos); !ch) // end of paragraph - last line
{
if (adjust == SvxAdjust::Block)
{
// Check adjustment for last line
switch (adjObj.GetLastBlock())
{
default:
return true;
case SvxAdjust::Center: // tdf#104668
if (!rInf.GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(
DocumentSettingId::MS_WORD_COMP_TRAILING_BLANKS))
return true;
break;
case SvxAdjust::Block:
break; // OK - last line uses block-adjustment
}
}
}
else if (ch != CH_BREAK && !IsBlank(ch))
return true;
// tdf#57187: block-adjusted line shorter than full width, terminated by manual
// line break, must not use trailing spaces for adjustment
TextFrameIndex breakPos;
TextFrameIndex newCutPos = AdjustCutPos(m_nCutPos, breakPos, rInf);
if (auto ch = rInf.GetChar(newCutPos); ch && ch != CH_BREAK)
return true; // next is neither line break nor paragraph end
if (breakPos == newCutPos)
return true; // no trailing whitespace
if (adjust == SvxAdjust::Block && adjObj.GetOneWord() != SvxAdjust::Block
&& !hasBlanksInLine(rInf, breakPos))
return true; // line can't block-adjust
// Some trailing spaces actually found, and in case of block adjustment, the text portion
// itself has spaces to be able to block-adjust, or single word is allowed to adjust
m_nBreakStart = m_nCutPos = newCutPos;
m_nBreakPos = breakPos;
// throw away old m_xHyphWord because the current break pos is now between words
m_xHyphWord = nullptr;
rInf.GetTextSize(&rSI, rInf.GetIdx(), breakPos - rInf.GetIdx(), nLayoutContext, maxComp,
m_nBreakWidth, rMaxSizeDiff, rExtraAscent, rExtraDescent,
rInf.GetCachedVclData().get());
rInf.GetTextSize(&rSI, breakPos, m_nBreakStart - breakPos, nLayoutContext, maxComp,
m_nExtraBlankWidth, rMaxSizeDiff, rExtraAscent, rExtraDescent,
rInf.GetCachedVclData().get());
return false; // require SwHolePortion creation
}
// provides information for line break calculation
// returns true if no line break has to be performed
// otherwise possible break or hyphenation position is determined
bool SwTextGuess::Guess( const SwTextPortion& rPor, SwTextFormatInfo &rInf,
const sal_uInt16 nPorHeight, sal_Int32 nSpacesInLine )
{
m_nCutPos = rInf.GetIdx();
// Empty strings are always 0
if( !rInf.GetLen() || rInf.GetText().isEmpty() )
return false;
OSL_ENSURE( rInf.GetIdx() < TextFrameIndex(rInf.GetText().getLength()),
"+SwTextGuess::Guess: invalid SwTextFormatInfo" );
OSL_ENSURE( nPorHeight, "+SwTextGuess::Guess: no height" );
tools::Long nMaxSizeDiff;
SwTwips nExtraAscent = 0;
SwTwips nExtraDescent = 0;
const SwScriptInfo& rSI = rInf.GetParaPortion()->GetScriptInfo();
sal_uInt16 nMaxComp = ( SwFontScript::CJK == rInf.GetFont()->GetActual() ) &&
rSI.CountCompChg() &&
! rInf.IsMulti() &&
! rPor.InFieldGrp() &&
! rPor.IsDropPortion() ?
10000 :
0 ;
SwTwips nLineWidth = rInf.GetLineWidth();
TextFrameIndex nMaxLen = TextFrameIndex(rInf.GetText().getLength()) - rInf.GetIdx();
const SvxAdjust aAdjust = rInf.GetTextFrame()->GetTextNodeForParaProps()->GetSwAttrSet().GetAdjust().GetAdjust();
// allow up to 20% shrinking of the spaces
if ( nSpacesInLine )
{
static constexpr OUStringLiteral STR_BLANK = u" ";
sal_Int16 nSpaceWidth = rInf.GetTextSize(STR_BLANK).Width();
SwTwips nExtraSpace = nSpacesInLine * (nSpaceWidth/0.8 - nSpaceWidth);
nLineWidth += nExtraSpace;
rInf.SetExtraSpace(nExtraSpace);
}
if ( rInf.GetLen() < nMaxLen )
nMaxLen = rInf.GetLen();
if( !nMaxLen )
return false;
sal_uInt16 nItalic = 0;
if( ITALIC_NONE != rInf.GetFont()->GetItalic() && !rInf.NotEOL() )
{
bool bAddItalic = true;
// do not add extra italic value if we have an active character grid
if ( rInf.SnapToGrid() )
{
SwTextGridItem const*const pGrid(
GetGridItem(rInf.GetTextFrame()->FindPageFrame()));
bAddItalic = !pGrid || GRID_LINES_CHARS != pGrid->GetGridType();
}
// do not add extra italic value for an isolated blank:
if (TextFrameIndex(1) == rInf.GetLen() &&
CH_BLANK == rInf.GetText()[sal_Int32(rInf.GetIdx())])
{
bAddItalic = false;
}
if (rInf.GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(
DocumentSettingId::TAB_OVER_MARGIN))
{
// Content is allowed over the margin: in this case over-margin content caused by italic
// formatting is OK.
bAddItalic = false;
}
nItalic = bAddItalic ? nPorHeight / 12 : 0;
nLineWidth -= nItalic;
// #i46524# LineBreak bug with italics
if ( nLineWidth < 0 ) nLineWidth = 0;
}
const sal_Int32 nLeftRightBorderSpace =
(!rPor.GetJoinBorderWithNext() ? rInf.GetFont()->GetRightBorderSpace() : 0) +
(!rPor.GetJoinBorderWithPrev() ? rInf.GetFont()->GetLeftBorderSpace() : 0);
nLineWidth -= nLeftRightBorderSpace;
const bool bUnbreakableNumberings = rInf.GetTextFrame()->GetDoc()
.getIDocumentSettingAccess().get(DocumentSettingId::UNBREAKABLE_NUMBERINGS);
// first check if everything fits to line
if ( ( nLineWidth * 2 > SwTwips(sal_Int32(nMaxLen)) * nPorHeight ) ||
( bUnbreakableNumberings && rPor.IsNumberPortion() ) )
{
// call GetTextSize with maximum compression (for kanas)
rInf.GetTextSize(&rSI, rInf.GetIdx(), nMaxLen, rInf.GetLayoutContext(), nMaxComp,
m_nBreakWidth, nMaxSizeDiff, nExtraAscent, nExtraDescent);
if ( ( m_nBreakWidth <= nLineWidth ) || ( bUnbreakableNumberings && rPor.IsNumberPortion() ) )
{
// portion fits to line
m_nCutPos = rInf.GetIdx() + nMaxLen;
bool bRet = rPor.InFieldGrp()
|| maybeAdjustPositionsForBlockAdjust(
nMaxSizeDiff, nExtraAscent, nExtraDescent, rInf,
rSI, nMaxComp, rInf.GetLayoutContext());
if( nItalic &&
(m_nCutPos >= TextFrameIndex(rInf.GetText().getLength()) ||
// #i48035# Needed for CalcFitToContent
// if first line ends with a manual line break
rInf.GetText()[sal_Int32(m_nCutPos)] == CH_BREAK))
m_nBreakWidth += nItalic;
// save maximum width for later use
if ( nMaxSizeDiff )
rInf.SetMaxWidthDiff( &rPor, nMaxSizeDiff );
rInf.SetExtraAscent(nExtraAscent);
rInf.SetExtraDescent(nExtraDescent);
m_nBreakWidth += nLeftRightBorderSpace;
return bRet;
}
}
bool bHyph = rInf.IsHyphenate() && !rInf.IsHyphForbud();
TextFrameIndex nHyphPos(0);
// nCutPos is the first character not fitting to the current line
// nHyphPos is the first character not fitting to the current line,
// considering an additional "-" for hyphenation
if( bHyph )
{
// nHyphZone is the first character not fitting in the hyphenation zone,
// or 0, if the whole line in the hyphenation zone,
// or -1, if no hyphenation zone defined (i.e. it is 0)
sal_Int32 nHyphZone = -1;
const css::beans::PropertyValues & rHyphValues = rInf.GetHyphValues();
assert( rHyphValues.getLength() > 5 && rHyphValues[5].Name == UPN_HYPH_ZONE );
// hyphenation zone (distance from the line end in twips)
sal_uInt16 nTextHyphenZone;
if ( rHyphValues[5].Value >>= nTextHyphenZone )
nHyphZone = nTextHyphenZone >= nLineWidth
? 0
: sal_Int32(rInf.GetTextBreak( nLineWidth - nTextHyphenZone,
nMaxLen, nMaxComp, rInf.GetCachedVclData().get() ));
m_nCutPos = rInf.GetTextBreak( nLineWidth, nMaxLen, nMaxComp, nHyphPos, rInf.GetCachedVclData().get() );
// don't try to hyphenate in the hyphenation zone
if ( nHyphZone != -1 && TextFrameIndex(COMPLETE_STRING) != m_nCutPos )
{
sal_Int32 nZonePos = sal_Int32(m_nCutPos);
// disable hyphenation, if there is a space within the hyphenation zone
// Note: for better interoperability, not fitting space character at
// rInf.GetIdx()[nHyphZone] always disables the hyphenation, don't need to calculate
// with its fitting part. Moreover, do not check double or more spaces there, they
// are accepted outside of the hyphenation zone, too.
for (; sal_Int32(rInf.GetIdx()) <= nZonePos && nHyphZone <= nZonePos; --nZonePos )
{
sal_Unicode cChar = rInf.GetText()[nZonePos];
if ( cChar == CH_BLANK || cChar == CH_FULL_BLANK || cChar == CH_SIX_PER_EM )
{
bHyph = false;
}
}
}
if (!rInf.GetTextFrame()->GetDoc().getIDocumentSettingAccess().get(
DocumentSettingId::HYPHENATE_URLS))
{
// check URL from preceding space - similar to what AutoFormat does
const CharClass& rCC = GetAppCharClass();
sal_Int32 begin(m_nCutPos == TextFrameIndex(COMPLETE_STRING) ? rInf.GetText().getLength() : sal_Int32(m_nCutPos));
sal_Int32 end(begin);
for (; 0 < begin; --begin)
{
sal_Unicode cChar = rInf.GetText()[begin - 1];
if (cChar == CH_BLANK || cChar == CH_FULL_BLANK || cChar == CH_SIX_PER_EM)
{
break;
}
}
for (; end < rInf.GetText().getLength(); ++end)
{
sal_Unicode cChar = rInf.GetText()[end];
if (cChar == CH_BLANK || cChar == CH_FULL_BLANK || cChar == CH_SIX_PER_EM)
{
break;
}
}
if (!URIHelper::FindFirstURLInText(rInf.GetText(), begin, end, rCC).isEmpty())
{
bHyph = false;
}
}
// search start of the last word, if needed
if ( bHyph )
{
// nLastWord is the space character before the last word of the line
sal_Int32 nLastWord = rInf.GetText().getLength() - 1;
bool bDoNotHyphenateLastLine = false; // don't hyphenate last full line of the paragraph
bool bHyphenationNoLastWord = false; // do not hyphenate the last word of the paragraph
assert( rHyphValues.getLength() > 3 && rHyphValues[3].Name == UPN_HYPH_NO_LAST_WORD );
assert( rHyphValues.getLength() > 6 && rHyphValues[6].Name == UPN_HYPH_KEEP_TYPE );
assert( rHyphValues.getLength() > 8 && rHyphValues[8].Name == UPN_HYPH_KEEP );
rHyphValues[3].Value >>= bHyphenationNoLastWord;
rHyphValues[8].Value >>= bDoNotHyphenateLastLine;
if ( bDoNotHyphenateLastLine )
{
sal_Int16 nKeepType = css::text::ParagraphHyphenationKeepType::COLUMN;
rHyphValues[6].Value >>= nKeepType;
if ( nKeepType == css::text::ParagraphHyphenationKeepType::ALWAYS )
{
if ( TextFrameIndex(COMPLETE_STRING) != m_nCutPos )
nLastWord = sal_Int32(m_nCutPos);
}
else
bDoNotHyphenateLastLine = false;
}
if ( bHyphenationNoLastWord || bDoNotHyphenateLastLine )
{
// skip spaces after the last word
bool bCutBlank = false;
for (; sal_Int32(rInf.GetIdx()) <= nLastWord; --nLastWord )
{
sal_Unicode cChar = rInf.GetText()[nLastWord];
if ( cChar != CH_BLANK && cChar != CH_FULL_BLANK && cChar != CH_SIX_PER_EM )
bCutBlank = true;
else if ( bCutBlank )
break;
}
}
// don't hyphenate the last word of the paragraph line
if ( ( bHyphenationNoLastWord || bDoNotHyphenateLastLine ) &&
sal_Int32(m_nCutPos) > nLastWord &&
TextFrameIndex(COMPLETE_STRING) != m_nCutPos &&
// if the last word is multiple line long, e.g. an URL,
// apply this only if the space before the word is there
// in the actual line, i.e. start the long word in a new
// line, but still allows to break its last parts
sal_Int32(rInf.GetIdx()) < nLastWord &&
// if the case of bDoNotHyphenateLastLine == true, skip hyphenation
// only if the character length of the very last line of the paragraph
// would be still less, than the length of the recent last but one line
// with hyphenation, i.e. don't skip hyphenation, if the last paragraph
// line is already near full.
( !bDoNotHyphenateLastLine ||
rInf.GetText().getLength() - sal_Int32(nLastWord) <
sal_Int32(m_nCutPos) - sal_Int32(rInf.GetIdx() ) ) )
{
m_nCutPos = TextFrameIndex(nLastWord);
}
}
if ( !nHyphPos && rInf.GetIdx() )
nHyphPos = rInf.GetIdx() - TextFrameIndex(1);
}
else
{
m_nCutPos = rInf.GetTextBreak( nLineWidth, nMaxLen, nMaxComp, rInf.GetCachedVclData().get() );
#if OSL_DEBUG_LEVEL > 1
if ( TextFrameIndex(COMPLETE_STRING) != m_nCutPos )
{
SwTwips nMinSize;
rInf.GetTextSize(&rSI, rInf.GetIdx(), m_nCutPos - rInf.GetIdx(), std::nullopt, nMaxComp,
nMinSize, nMaxSizeDiff, nExtraAscent, nExtraDescent);
OSL_ENSURE( nMinSize <= nLineWidth, "What a Guess!!!" );
}
#endif
}
if( m_nCutPos > rInf.GetIdx() + nMaxLen )
{
// second check if everything fits to line
m_nCutPos = m_nBreakPos = rInf.GetIdx() + nMaxLen - TextFrameIndex(1);
rInf.GetTextSize(&rSI, rInf.GetIdx(), nMaxLen, rInf.GetLayoutContext(), nMaxComp,
m_nBreakWidth, nMaxSizeDiff, nExtraAscent, nExtraDescent);
// The following comparison should always give true, otherwise
// there likely has been a pixel rounding error in GetTextBreak
if ( m_nBreakWidth <= nLineWidth )
{
bool bRet = rPor.InFieldGrp()
|| maybeAdjustPositionsForBlockAdjust(
nMaxSizeDiff, nExtraAscent, nExtraDescent, rInf,
rSI, nMaxComp, rInf.GetLayoutContext());
if (nItalic && (m_nBreakPos + TextFrameIndex(1)) >= TextFrameIndex(rInf.GetText().getLength()))
m_nBreakWidth += nItalic;
// save maximum width for later use
if ( nMaxSizeDiff )
rInf.SetMaxWidthDiff( &rPor, nMaxSizeDiff );
rInf.SetExtraAscent(nExtraAscent);
rInf.SetExtraDescent(nExtraDescent);
m_nBreakWidth += nLeftRightBorderSpace;
return bRet;
}
}
// we have to trigger an underflow for a footnote portion
// which does not fit to the current line
if ( rPor.IsFootnotePortion() )
{
m_nBreakPos = rInf.GetIdx();
m_nCutPos = TextFrameIndex(-1);
return false;
}
TextFrameIndex nPorLen(0);
// do not call the break iterator nCutPos is a blank
sal_Unicode cCutChar = rInf.GetChar(m_nCutPos);
if (IsBlank(cCutChar))
{
m_nCutPos = m_nBreakStart = AdjustCutPos(m_nCutPos, m_nBreakPos, rInf);
nPorLen = m_nBreakPos - rInf.GetIdx();
// throw away old m_xHyphWord when m_nBreakStart changes
m_xHyphWord = nullptr;
}
else
{
// New: We should have a look into the last portion, if it was a
// field portion. For this, we expand the text of the field portion
// into our string. If the line break position is inside of before
// the field portion, we trigger an underflow.
TextFrameIndex nOldIdx = rInf.GetIdx();
sal_Unicode cFieldChr = 0;
#if OSL_DEBUG_LEVEL > 0
OUString aDebugString;
#endif
// be careful: a field portion can be both: 0x01 (common field)
// or 0x02 (the follow of a footnode)
if ( rInf.GetLast() && rInf.GetLast()->InFieldGrp() &&
! rInf.GetLast()->IsFootnotePortion() &&
rInf.GetIdx() > rInf.GetLineStart() &&
CH_TXTATR_BREAKWORD ==
(cFieldChr = rInf.GetText()[sal_Int32(rInf.GetIdx()) - 1]))
{
SwFieldPortion* pField = static_cast<SwFieldPortion*>(rInf.GetLast());
OUString aText;
pField->GetExpText( rInf, aText );
if ( !aText.isEmpty() )
{
m_nFieldDiff = TextFrameIndex(aText.getLength() - 1);
m_nCutPos = m_nCutPos + m_nFieldDiff;
nHyphPos = nHyphPos + m_nFieldDiff;
#if OSL_DEBUG_LEVEL > 0
aDebugString = rInf.GetText();
#endif
// this is pretty nutso... reverted at the end...
OUString& rOldText = const_cast<OUString&> (rInf.GetText());
rOldText = rOldText.replaceAt(sal_Int32(rInf.GetIdx()) - 1, 1, aText);
rInf.SetIdx( rInf.GetIdx() + m_nFieldDiff );
}
else
cFieldChr = 0;
}
LineBreakHyphenationOptions aHyphOpt;
Reference< XHyphenator > xHyph;
if( bHyph )
{
xHyph = ::GetHyphenator();
aHyphOpt = LineBreakHyphenationOptions( xHyph,
rInf.GetHyphValues(), sal_Int32(nHyphPos));
}
// Get Language for break iterator.
// We have to switch the current language if we have a script
// change at nCutPos. Otherwise LATIN punctuation would never
// be allowed to be hanging punctuation.
// NEVER call GetLangOfChar if the string has been modified!!!
LanguageType aLang = rInf.GetFont()->GetLanguage();
// If we are inside a field portion, we use a temporary string which
// differs from the string at the textnode. Therefore we are not allowed
// to call the GetLangOfChar function.
if ( m_nCutPos && ! rPor.InFieldGrp() )
{
const CharClass& rCC = GetAppCharClass();
// step back until a non-punctuation character is reached
TextFrameIndex nLangIndex = m_nCutPos;
// If a field has been expanded right in front of us we do not
// step further than the beginning of the expanded field
// (which is the position of the field placeholder in our
// original string).
const TextFrameIndex nDoNotStepOver = CH_TXTATR_BREAKWORD == cFieldChr
? rInf.GetIdx() - m_nFieldDiff - TextFrameIndex(1)
: TextFrameIndex(0);
if ( nLangIndex > nDoNotStepOver &&
TextFrameIndex(rInf.GetText().getLength()) == nLangIndex)
--nLangIndex;
while ( nLangIndex > nDoNotStepOver &&
!rCC.isLetterNumeric(rInf.GetText(), sal_Int32(nLangIndex)))
--nLangIndex;
// last "real" character is not inside our current portion
// we have to check the script type of the last "real" character
if ( nLangIndex < rInf.GetIdx() )
{
sal_uInt16 nScript = g_pBreakIt->GetRealScriptOfText( rInf.GetText(),
sal_Int32(nLangIndex));
OSL_ENSURE( nScript, "Script is not between 1 and 4" );
// compare current script with script from last "real" character
if ( SwFontScript(nScript - 1) != rInf.GetFont()->GetActual() )
{
aLang = rInf.GetTextFrame()->GetLangOfChar(
CH_TXTATR_BREAKWORD == cFieldChr
? nDoNotStepOver
: nLangIndex,
nScript, true);
}
}
}
const ForbiddenCharacters aForbidden(
*rInf.GetTextFrame()->GetDoc().getIDocumentSettingAccess().getForbiddenCharacters(aLang, true));
const bool bAllowHanging = rInf.IsHanging() && ! rInf.IsMulti() &&
! rInf.GetTextFrame()->IsInTab() &&
! rPor.InFieldGrp();
LineBreakUserOptions aUserOpt(
aForbidden.beginLine, aForbidden.endLine,
rInf.HasForbiddenChars(), bAllowHanging, false );
// !!! We must have a local copy of the locale, because inside
// getLineBreak the LinguEventListener can trigger a new formatting,
// which can corrupt the locale pointer inside pBreakIt.
const lang::Locale aLocale = g_pBreakIt->GetLocale( aLang );
// determines first possible line break from nCutPos to
// start index of current line
LineBreakResults aResult = g_pBreakIt->GetBreakIter()->getLineBreak(
rInf.GetText(), sal_Int32(m_nCutPos), aLocale,
sal_Int32(rInf.GetLineStart()), aHyphOpt, aUserOpt );
m_nBreakPos = TextFrameIndex(aResult.breakIndex);
// if we are formatting multi portions we want to allow line breaks
// at the border between single line and multi line portion
// we have to be careful with footnote portions, they always come in
// with an index 0
if ( m_nBreakPos < rInf.GetLineStart() && rInf.IsFirstMulti() &&
! rInf.IsFootnoteInside() )
m_nBreakPos = rInf.GetLineStart();
m_nBreakStart = m_nBreakPos;
bHyph = BreakType::HYPHENATION == aResult.breakType;
if (bHyph)
{
LanguageType aNoHyphLang;
if (rPor.InFieldGrp())
{
// If we are inside a field portion, we use a temporary string which
// differs from the string at the textnode. Therefore we are not allowed
// to call the GetLangOfChar function.
aNoHyphLang = LANGUAGE_DONTKNOW;
}
else
{
// allow hyphenation of the word only if it's not disabled by character formatting
aNoHyphLang = rInf.GetTextFrame()->GetLangOfChar(
TextFrameIndex( sal_Int32(m_nBreakPos) +
aResult.rHyphenatedWord->getHyphenationPos() ),
1, true, /*bNoneIfNoHyphenation=*/true );
}
// allow hyphenation of the word only if it's not disabled by character formatting
bHyph = aNoHyphLang != LANGUAGE_NONE;
}
if (bHyph && m_nBreakPos != TextFrameIndex(COMPLETE_STRING))
{
// found hyphenation position within line
// nBreakPos is set to the hyphenation position
m_xHyphWord = aResult.rHyphenatedWord;
m_nBreakPos += TextFrameIndex(m_xHyphWord->getHyphenationPos() + 1);
// if not in interactive mode, we have to break behind a soft hyphen
if ( ! rInf.IsInterHyph() && rInf.GetIdx() )
{
sal_Int32 const nSoftHyphPos =
m_xHyphWord->getWord().indexOf( CHAR_SOFTHYPHEN );
if ( nSoftHyphPos >= 0 &&
m_nBreakStart + TextFrameIndex(nSoftHyphPos) <= m_nBreakPos &&
m_nBreakPos > rInf.GetLineStart() )
m_nBreakPos = rInf.GetIdx() - TextFrameIndex(1);
}
if( m_nBreakPos >= rInf.GetIdx() )
{
nPorLen = m_nBreakPos - rInf.GetIdx();
if ('-' == rInf.GetText()[ sal_Int32(m_nBreakPos) - 1 ])
m_xHyphWord = nullptr;
}
}
else if ( !bHyph && m_nBreakPos >= rInf.GetLineStart() )
{
OSL_ENSURE(sal_Int32(m_nBreakPos) != COMPLETE_STRING, "we should have found a break pos");
// found break position within line
m_xHyphWord = nullptr;
// check, if break position is soft hyphen and an underflow
// has to be triggered
if( m_nBreakPos > rInf.GetLineStart() && rInf.GetIdx() &&
CHAR_SOFTHYPHEN == rInf.GetText()[ sal_Int32(m_nBreakPos) - 1 ])
{
m_nBreakPos = rInf.GetIdx() - TextFrameIndex(1);
}
if( aAdjust != SvxAdjust::Left )
{
// Delete any blanks at the end of a line, but be careful:
// If a field has been expanded, we do not want to delete any
// blanks inside the field portion. This would cause an unwanted
// underflow
TextFrameIndex nX = m_nBreakPos;
while( nX > rInf.GetLineStart() &&
( CH_TXTATR_BREAKWORD != cFieldChr || nX > rInf.GetIdx() ) &&
( CH_BLANK == rInf.GetChar( --nX ) ||
CH_SIX_PER_EM == rInf.GetChar( nX ) ||
CH_FULL_BLANK == rInf.GetChar( nX ) ) )
m_nBreakPos = nX;
}
if( m_nBreakPos > rInf.GetIdx() )
nPorLen = m_nBreakPos - rInf.GetIdx();
}
else
{
// no line break found, setting nBreakPos to COMPLETE_STRING
// causes a break cut
m_nBreakPos = TextFrameIndex(COMPLETE_STRING);
OSL_ENSURE( m_nCutPos >= rInf.GetIdx(), "Deep cut" );
nPorLen = m_nCutPos - rInf.GetIdx();
}
if (m_nBreakPos > m_nCutPos && m_nBreakPos != TextFrameIndex(COMPLETE_STRING))
{
const TextFrameIndex nHangingLen = m_nBreakPos - m_nCutPos;
SwPosSize aTmpSize = rInf.GetTextSize( &rSI, m_nCutPos, nHangingLen );
aTmpSize.Width(aTmpSize.Width() + nLeftRightBorderSpace);
OSL_ENSURE( !m_pHanging, "A hanging portion is hanging around" );
m_pHanging.reset( new SwHangingPortion( std::move(aTmpSize) ) );
m_pHanging->SetLen( nHangingLen );
nPorLen = m_nCutPos - rInf.GetIdx();
}
// If we expanded a field, we must repair the original string.
// In case we do not trigger an underflow, we correct the nBreakPos
// value, but we cannot correct the nBreakStart value:
// If we have found a hyphenation position, nBreakStart can lie before
// the field.
if ( CH_TXTATR_BREAKWORD == cFieldChr )
{
if ( m_nBreakPos < rInf.GetIdx() )
m_nBreakPos = nOldIdx - TextFrameIndex(1);
else if (TextFrameIndex(COMPLETE_STRING) != m_nBreakPos)
{
OSL_ENSURE( m_nBreakPos >= m_nFieldDiff, "I've got field trouble!" );
m_nBreakPos = m_nBreakPos - m_nFieldDiff;
}
OSL_ENSURE( m_nCutPos >= rInf.GetIdx() && m_nCutPos >= m_nFieldDiff,
"I've got field trouble, part2!" );
m_nCutPos = m_nCutPos - m_nFieldDiff;
OUString& rOldText = const_cast<OUString&> (rInf.GetText());
OUString aReplacement( cFieldChr );
rOldText = rOldText.replaceAt(sal_Int32(nOldIdx) - 1, sal_Int32(m_nFieldDiff) + 1, aReplacement);
rInf.SetIdx( nOldIdx );
#if OSL_DEBUG_LEVEL > 0
OSL_ENSURE( aDebugString == rInf.GetText(),
"Somebody, somebody, somebody put something in my string" );
#endif
}
}
if( nPorLen )
{
rInf.GetTextSize(&rSI, rInf.GetIdx(), nPorLen, std::nullopt, nMaxComp, m_nBreakWidth,
nMaxSizeDiff, nExtraAscent, nExtraDescent, rInf.GetCachedVclData().get());
// save maximum width for later use
if ( nMaxSizeDiff )
rInf.SetMaxWidthDiff( &rPor, nMaxSizeDiff );
rInf.SetExtraAscent(nExtraAscent);
rInf.SetExtraDescent(nExtraDescent);
m_nBreakWidth += nItalic + nLeftRightBorderSpace;
}
else
m_nBreakWidth = 0;
if (m_nBreakStart > rInf.GetIdx() + nPorLen + m_nFieldDiff)
{
rInf.GetTextSize(&rSI, rInf.GetIdx() + nPorLen,
m_nBreakStart - rInf.GetIdx() - nPorLen - m_nFieldDiff, std::nullopt,
nMaxComp, m_nExtraBlankWidth, nMaxSizeDiff, nExtraAscent, nExtraDescent,
rInf.GetCachedVclData().get());
}
if( m_pHanging )
{
m_nBreakPos = m_nCutPos;
// Keep following SwBreakPortion in the same line.
if ( CH_BREAK == rInf.GetChar( m_nBreakPos + m_pHanging->GetLen() ) )
return true;
}
return false;
}
// returns true if word at position nPos has a different spelling
// if hyphenated at this position (old german spelling)
bool SwTextGuess::AlternativeSpelling( const SwTextFormatInfo &rInf,
const TextFrameIndex nPos)
{
// get word boundaries
Boundary aBound = g_pBreakIt->GetBreakIter()->getWordBoundary(
rInf.GetText(), sal_Int32(nPos),
g_pBreakIt->GetLocale( rInf.GetFont()->GetLanguage() ),
WordType::DICTIONARY_WORD, true );
m_nBreakStart = TextFrameIndex(aBound.startPos);
sal_Int32 nWordLen = aBound.endPos - sal_Int32(m_nBreakStart);
// if everything else fails, we want to cut at nPos
m_nCutPos = nPos;
OUString const aText( rInf.GetText().copy(sal_Int32(m_nBreakStart), nWordLen) );
// check, if word has alternative spelling
Reference< XHyphenator > xHyph( ::GetHyphenator() );
OSL_ENSURE( xHyph.is(), "Hyphenator is missing");
//! subtract 1 since the UNO-interface is 0 based
m_xHyphWord = xHyph->queryAlternativeSpelling( aText,
g_pBreakIt->GetLocale( rInf.GetFont()->GetLanguage() ),
sal::static_int_cast<sal_Int16>(sal_Int32(nPos - m_nBreakStart)),
rInf.GetHyphValues() );
return m_xHyphWord.is() && m_xHyphWord->isAlternativeSpelling();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V614 Uninitialized variable 'nTextHyphenZone' used.
↑ V547 Expression 'bDoNotHyphenateLastLine' is always false.