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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 <sal/config.h>
#include <o3tl/safeint.hxx>
#include <frminf.hxx>
#include "itrtxt.hxx"
TextFrameIndex SwTextMargin::GetTextStart() const
{
const OUString &rText = GetInfo().GetText();
const TextFrameIndex nEnd = m_nStart + m_pCurr->GetLen();
for (TextFrameIndex i = m_nStart; i < nEnd; ++i)
{
const sal_Unicode aChar = rText[sal_Int32(i)];
if( CH_TAB != aChar && ' ' != aChar )
return i;
}
return nEnd;
}
TextFrameIndex SwTextMargin::GetTextEnd() const
{
const OUString &rText = GetInfo().GetText();
const TextFrameIndex nEnd = m_nStart + m_pCurr->GetLen();
for (TextFrameIndex i = nEnd - TextFrameIndex(1); i >= m_nStart; --i)
{
const sal_Unicode aChar = rText[sal_Int32(i)];
if( CH_TAB != aChar && CH_BREAK != aChar && ' ' != aChar )
return i + TextFrameIndex(1);
}
return m_nStart;
}
// Does the paragraph fit into one line?
bool SwTextFrameInfo::IsOneLine() const
{
const SwLineLayout *pLay = pFrame->GetPara();
if( !pLay )
return false;
// For follows false of course
if( pFrame->GetFollow() )
return false;
pLay = pLay->GetNext();
while( pLay )
{
if( pLay->GetLen() )
return false;
pLay = pLay->GetNext();
}
return true;
}
// Is the line filled for X percent?
bool SwTextFrameInfo::IsFilled( const sal_uInt8 nPercent ) const
{
const SwLineLayout *pLay = pFrame->GetPara();
if( !pLay )
return false;
long nWidth = pFrame->getFramePrintArea().Width();
nWidth *= nPercent;
nWidth /= 100;
return o3tl::make_unsigned(nWidth) <= pLay->Width();
}
// Where does the text start (without whitespace)? (document global)
SwTwips SwTextFrameInfo::GetLineStart( const SwTextCursor &rLine )
{
const TextFrameIndex nTextStart = rLine.GetTextStart();
if( rLine.GetStart() == nTextStart )
return rLine.GetLineStart();
SwRect aRect;
const_cast<SwTextCursor&>(rLine).GetCharRect( &aRect, nTextStart );
return aRect.Left();
}
// Where does the text start (without whitespace)? (relative in the Frame)
SwTwips SwTextFrameInfo::GetLineStart() const
{
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextCursor aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
return GetLineStart( aLine ) - pFrame->getFrameArea().Left() - pFrame->getFramePrintArea().Left();
}
// Calculates the character's position and returns the middle position
SwTwips SwTextFrameInfo::GetCharPos(TextFrameIndex const nChar, bool bCenter) const
{
SwRectFnSet aRectFnSet(pFrame);
SwFrameSwapper aSwapper( pFrame, true );
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextCursor aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
SwTwips nStt, nNext;
SwRect aRect;
aLine.GetCharRect( &aRect, nChar );
if ( aRectFnSet.IsVert() )
pFrame->SwitchHorizontalToVertical( aRect );
nStt = aRectFnSet.GetLeft(aRect);
if( !bCenter )
return nStt - aRectFnSet.GetLeft(pFrame->getFrameArea());
aLine.GetCharRect( &aRect, nChar + TextFrameIndex(1) );
if ( aRectFnSet.IsVert() )
pFrame->SwitchHorizontalToVertical( aRect );
nNext = aRectFnSet.GetLeft(aRect);
return (( nNext + nStt ) / 2 ) - aRectFnSet.GetLeft(pFrame->getFrameArea());
}
static void
AddRange(std::vector<std::pair<TextFrameIndex, TextFrameIndex>> & rRanges,
TextFrameIndex const nPos, TextFrameIndex const nLen)
{
assert(rRanges.empty() || rRanges.back().second <= nPos);
if( nLen )
{
if (!rRanges.empty() && nPos == rRanges.back().second)
{
rRanges.back().second += nLen;
}
else
{
rRanges.emplace_back(nPos, nPos + nLen);
}
}
}
// Accumulates the whitespace at line start and end in the vector
void SwTextFrameInfo::GetSpaces(
std::vector<std::pair<TextFrameIndex, TextFrameIndex>> & rRanges,
bool const bWithLineBreak) const
{
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextMargin aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
bool bFirstLine = true;
do {
if( aLine.GetCurr()->GetLen() )
{
TextFrameIndex nPos = aLine.GetTextStart();
// Do NOT include the blanks/tabs from the first line
// in the selection
if( !bFirstLine && nPos > aLine.GetStart() )
AddRange( rRanges, aLine.GetStart(), nPos - aLine.GetStart() );
// Do NOT include the blanks/tabs from the last line
// in the selection
if( aLine.GetNext() )
{
nPos = aLine.GetTextEnd();
if( nPos < aLine.GetEnd() )
{
TextFrameIndex const nOff( !bWithLineBreak && CH_BREAK ==
aLine.GetInfo().GetChar(aLine.GetEnd() - TextFrameIndex(1))
? 1 : 0 );
AddRange( rRanges, nPos, aLine.GetEnd() - nPos - nOff );
}
}
}
bFirstLine = false;
}
while( aLine.Next() );
}
// Is there a bullet/symbol etc. at the text position?
// Fonts: CharSet, SYMBOL and DONTKNOW
bool SwTextFrameInfo::IsBullet(TextFrameIndex const nTextStart) const
{
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextMargin aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
aInf.SetIdx( nTextStart );
return aLine.IsSymbol( nTextStart );
}
// Get first line indent
// The precondition for a positive or negative first line indent:
// All lines (except for the first one) have the same left margin.
// We do not want to be so picky and work with a tolerance of TOLERANCE twips.
SwTwips SwTextFrameInfo::GetFirstIndent() const
{
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextCursor aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
const SwTwips nFirst = GetLineStart( aLine );
const SwTwips TOLERANCE = 20;
if( !aLine.Next() )
return 0;
SwTwips nLeft = GetLineStart( aLine );
while( aLine.Next() )
{
if( aLine.GetCurr()->GetLen() )
{
const SwTwips nCurrLeft = GetLineStart( aLine );
if( nLeft + TOLERANCE < nCurrLeft ||
nLeft - TOLERANCE > nCurrLeft )
return 0;
}
}
// At first we only return +1, -1 and 0
if( nLeft == nFirst )
return 0;
if( nLeft > nFirst )
return -1;
return 1;
}
sal_Int32 SwTextFrameInfo::GetBigIndent(TextFrameIndex& rFndPos,
const SwTextFrame *pNextFrame ) const
{
SwTextSizeInfo aInf( const_cast<SwTextFrame*>(pFrame) );
SwTextCursor aLine( const_cast<SwTextFrame*>(pFrame), &aInf );
SwTwips nNextIndent = 0;
if( pNextFrame )
{
// I'm a single line
SwTextSizeInfo aNxtInf( const_cast<SwTextFrame*>(pNextFrame) );
SwTextCursor aNxtLine( const_cast<SwTextFrame*>(pNextFrame), &aNxtInf );
nNextIndent = GetLineStart( aNxtLine );
}
else
{
// I'm multi-line
if( aLine.Next() )
{
nNextIndent = GetLineStart( aLine );
aLine.Prev();
}
}
if( nNextIndent <= GetLineStart( aLine ) )
return 0;
const Point aPoint( nNextIndent, aLine.Y() );
rFndPos = aLine.GetModelPositionForViewPoint( nullptr, aPoint, false );
if (TextFrameIndex(1) >= rFndPos)
return 0;
// Is on front of a non-space
const OUString& rText = aInf.GetText();
sal_Unicode aChar = rText[sal_Int32(rFndPos)];
if( CH_TAB == aChar || CH_BREAK == aChar || ' ' == aChar ||
(( CH_TXTATR_BREAKWORD == aChar || CH_TXTATR_INWORD == aChar ) &&
aInf.HasHint( rFndPos ) ) )
return 0;
// and after a space
aChar = rText[sal_Int32(rFndPos) - 1];
if( CH_TAB != aChar && CH_BREAK != aChar &&
( ( CH_TXTATR_BREAKWORD != aChar && CH_TXTATR_INWORD != aChar ) ||
!aInf.HasHint(rFndPos - TextFrameIndex(1))) &&
// More than two Blanks!
(' ' != aChar || ' ' != rText[sal_Int32(rFndPos) - 2]))
return 0;
SwRect aRect;
aLine.GetCharRect( &aRect, rFndPos );
return static_cast<sal_Int32>(aRect.Left() - pFrame->getFrameArea().Left() - pFrame->getFramePrintArea().Left());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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