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Diffstat (limited to 'sw/source/core/text/frminf.cxx')
| -rw-r--r-- | sw/source/core/text/frminf.cxx | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/sw/source/core/text/frminf.cxx b/sw/source/core/text/frminf.cxx new file mode 100644 index 000000000..f42fef695 --- /dev/null +++ b/sw/source/core/text/frminf.cxx @@ -0,0 +1,293 @@ +/* -*- 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: */ |