xref: /AOO41X/main/svx/source/table/tablelayouter.cxx (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)

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 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
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 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <com/sun/star/table/XMergeableCell.hpp>
#include <com/sun/star/awt/XLayoutConstrains.hpp>
#include <boost/bind.hpp>

#include "cell.hxx"
#include "cellrange.hxx"
#include "tablemodel.hxx"
#include "tablerow.hxx"
#include "tablerows.hxx"
#include "tablecolumn.hxx"
#include "tablecolumns.hxx"
#include "tablelayouter.hxx"
#include "svx/svdotable.hxx"
#include "editeng/borderline.hxx"
#include "editeng/boxitem.hxx"
#include "svx/svdmodel.hxx"
#include "svx/svdstr.hrc"
#include "svx/svdglob.hxx"

using ::rtl::OUString;
using ::com::sun::star::awt::XLayoutConstrains;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::table;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::table;
using namespace ::com::sun::star::text;

// -----------------------------------------------------------------------------

namespace sdr { namespace table {

// -----------------------------------------------------------------------------

static SvxBorderLine gEmptyBorder;

// -----------------------------------------------------------------------------

TableLayouter::TableLayouter( const TableModelRef& xTableModel )
: mxTable( xTableModel )
, meWritingMode( WritingMode_LR_TB )
, msSize( RTL_CONSTASCII_USTRINGPARAM( "Size" ) )
{
}

// -----------------------------------------------------------------------------

TableLayouter::~TableLayouter()
{
	ClearBorderLayout();
}

// -----------------------------------------------------------------------------

basegfx::B2ITuple TableLayouter::getCellSize( const CellPos& rPos  ) const
{
	sal_Int32 width = 0;
	sal_Int32 height = 0;

	try
	{
		CellRef xCell( getCell( rPos ) );
		if( xCell.is() && !xCell->isMerged() )
		{
			CellPos aPos( rPos );

			sal_Int32 nRowCount = getRowCount();
			sal_Int32 nRowSpan = std::max( xCell->getRowSpan(), (sal_Int32)1 );
			while( nRowSpan && (aPos.mnRow < nRowCount) )
			{
                if( ((sal_Int32)maRows.size()) <= aPos.mnRow )
                    break;

				height += maRows[aPos.mnRow++].mnSize;
				nRowSpan--;
			}

			sal_Int32 nColCount = getColumnCount();
			sal_Int32 nColSpan = std::max( xCell->getColumnSpan(), (sal_Int32)1 );
			while( nColSpan && (aPos.mnCol < nColCount ) )
			{
                if( ((sal_Int32)maColumns.size()) <= aPos.mnCol )
                    break;

                width += maColumns[aPos.mnCol++].mnSize;
				nColSpan--;
			}
		}
	}
	catch( Exception& )
	{
		DBG_ERROR( "TableLayouter::getCellSize(), exception caught!" );
	}

	return basegfx::B2ITuple( width, height );
}

// -----------------------------------------------------------------------------

bool TableLayouter::getCellArea( const CellPos& rPos, basegfx::B2IRectangle& rArea ) const
{
	try
	{
		CellRef xCell( getCell( rPos ) );
		if( xCell.is() && !xCell->isMerged() && isValid(rPos) )
		{
			const basegfx::B2ITuple aCellSize( getCellSize( rPos ) );

            if( (rPos.mnCol < ((sal_Int32)maColumns.size()) && (rPos.mnRow < ((sal_Int32)maRows.size()) ) ) )
            {
    			const sal_Int32 x = maColumns[rPos.mnCol].mnPos;
	    		const sal_Int32 y = maRows[rPos.mnRow].mnPos;

	    		rArea = basegfx::B2IRectangle( x, y, x + aCellSize.getX(), y + aCellSize.getY()  );
		    	return true;
            }
		}
	}
	catch( Exception& )
	{
		DBG_ERROR( "TableLayouter::getCellSize(), exception caught!" );
	}
	return false;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getRowHeight( sal_Int32 nRow )
{
	if( isValidRow(nRow) )
		return maRows[nRow].mnSize;
	else
		return 0;
}

// -----------------------------------------------------------------------------

void TableLayouter::setRowHeight( sal_Int32 nRow, sal_Int32 nHeight )
{
	if( isValidRow(nRow) )
	{
		maRows[nRow].mnSize = nHeight;
	}
	else
	{
		DBG_ERROR( "TableLayouter::setRowHeight(), row out of range!" );
	}
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getColumnWidth( sal_Int32 nColumn )
{
	if( isValidColumn(nColumn) )
		return maColumns[nColumn].mnSize;
	else
		return 0;
}

// -----------------------------------------------------------------------------

void TableLayouter::setColumnWidth( sal_Int32 nColumn, sal_Int32 nWidth )
{
	if( isValidColumn(nColumn) )
		maColumns[nColumn].mnSize = nWidth;
	else
		DBG_ERROR( "TableLayouter::setColumnWidth(), column out of range!" );
}

// -----------------------------------------------------------------------------

bool TableLayouter::isEdgeVisible( sal_Int32 nEdgeX, sal_Int32 nEdgeY, bool bHorizontal ) const
{
	const BorderLineMap& rMap = bHorizontal ? maHorizontalBorders : maVerticalBorders;

	if( (nEdgeX >= 0) && (nEdgeX < sal::static_int_cast<sal_Int32>(rMap.size())) &&
		(nEdgeY >= 0) && (nEdgeY < sal::static_int_cast<sal_Int32>(rMap[nEdgeX].size())) )
	{
		return rMap[nEdgeX][nEdgeY] != 0;
	}
	else
	{
		OSL_ENSURE( false, "sdr::table::TableLayouter::getBorderLine(), invalid edge!" );
	}

	return false;
}

// -----------------------------------------------------------------------------

/** returns the requested borderline in rpBorderLine or a null pointer if there is no border at this edge */
SvxBorderLine* TableLayouter::getBorderLine( sal_Int32 nEdgeX, sal_Int32 nEdgeY, bool bHorizontal )const
{
	SvxBorderLine* pLine = 0;

	const BorderLineMap& rMap = bHorizontal ? maHorizontalBorders : maVerticalBorders;

	if( (nEdgeX >= 0) && (nEdgeX < sal::static_int_cast<sal_Int32>(rMap.size())) &&
		(nEdgeY >= 0) && (nEdgeY < sal::static_int_cast<sal_Int32>(rMap[nEdgeX].size())) )
	{
		pLine = rMap[nEdgeX][nEdgeY];
		if( pLine == &gEmptyBorder )
			pLine = 0;
	}
	else
	{
		OSL_ENSURE( false, "sdr::table::TableLayouter::getBorderLine(), invalid edge!" );
	}

	return pLine;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getHorizontalEdge( int nEdgeY, sal_Int32* pnMin /*= 0*/, sal_Int32* pnMax /*= 0*/ )
{
	sal_Int32 nRet = 0;
	if( (nEdgeY >= 0) && (nEdgeY <= getRowCount() ) )
		nRet = maRows[std::min((sal_Int32)nEdgeY,getRowCount()-1)].mnPos;

	if( nEdgeY == getRowCount() )
		nRet += maRows[nEdgeY - 1].mnSize;

	if( pnMin )
	{
		if( (nEdgeY > 0) && (nEdgeY <= getRowCount() ) )
		{
			*pnMin = maRows[nEdgeY-1].mnPos + 600; // todo
		}
		else
		{
			*pnMin = nRet;
		}
	}

	if( pnMax )
	{
		*pnMax = 0x0fffffff;
	}
	return nRet;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getVerticalEdge( int nEdgeX, sal_Int32* pnMin /*= 0*/, sal_Int32* pnMax /*= 0*/ )
{
	sal_Int32 nRet = 0;

	const sal_Int32 nColCount = getColumnCount();
	if( (nEdgeX >= 0) && (nEdgeX <= nColCount ) )
		nRet = maColumns[std::min((sal_Int32)nEdgeX,nColCount-1)].mnPos;

	const bool bRTL = meWritingMode == WritingMode_RL_TB;
	if( bRTL )
	{
		if( (nEdgeX >= 0) && (nEdgeX < nColCount) )
			nRet += maColumns[nEdgeX].mnSize;
	}
	else
	{
		if( nEdgeX == getColumnCount() )
			nRet += maColumns[nEdgeX - 1].mnSize;
	}

	if( pnMin )
	{
		*pnMin = nRet;
		if( bRTL )
		{
			if( nEdgeX < nColCount )
				*pnMin = nRet - maColumns[nEdgeX].mnSize + getMinimumColumnWidth(nEdgeX);
		}
		else
		{
			if( (nEdgeX > 0) && (nEdgeX <= nColCount ) )
				*pnMin = maColumns[nEdgeX-1].mnPos + getMinimumColumnWidth( nEdgeX-1 );
		}
	}

	if( pnMax )
	{
		*pnMax = 0x0fffffff; // todo
		if( bRTL )
		{
			if( nEdgeX > 0 )
				*pnMax = nRet + maColumns[nEdgeX-1].mnSize - getMinimumColumnWidth( nEdgeX-1 );
		}
		else
		{
			if( (nEdgeX >= 0) && (nEdgeX < nColCount ) )
				*pnMax = maColumns[nEdgeX].mnPos + maColumns[nEdgeX].mnSize - getMinimumColumnWidth( nEdgeX );
		}
	}

	return nRet;
}

// -----------------------------------------------------------------------------

static bool checkMergeOrigin( const TableModelRef& xTable, sal_Int32 nMergedX, sal_Int32 nMergedY, sal_Int32 nCellX, sal_Int32 nCellY, bool& bRunning )
{
    Reference< XMergeableCell > xCell( xTable->getCellByPosition( nCellX, nCellY ), UNO_QUERY );
    if( xCell.is() && !xCell->isMerged() )
    {
        const sal_Int32 nRight = xCell->getColumnSpan() + nCellX;
        const sal_Int32 nBottom = xCell->getRowSpan() + nCellY;
        if( (nMergedX < nRight) && (nMergedY < nBottom) )
            return true;

        bRunning = false;
    }
    return false;
}

/** returns true if the cell(nMergedX,nMergedY) is merged with other cells.
	the returned cell( rOriginX, rOriginY ) is the origin( top left cell ) of the merge.
*/
bool findMergeOrigin( const TableModelRef& xTable, sal_Int32 nMergedX, sal_Int32 nMergedY, sal_Int32& rOriginX, sal_Int32& rOriginY )
{
	rOriginX = nMergedX;
	rOriginY = nMergedY;

	if( xTable.is() ) try
	{
		// check if this cell already the origin or not merged at all
		Reference< XMergeableCell > xCell( xTable->getCellByPosition( nMergedX, nMergedY ), UNO_QUERY_THROW );
		if( !xCell.is() || !xCell->isMerged() )
			return true;

        bool bCheckVert = true;
        bool bCheckHorz = true;

        sal_Int32 nMinCol = 0;
        sal_Int32 nMinRow = 0;

        sal_Int32 nStep = 1, i;

        sal_Int32 nRow, nCol;
        do
        {
            if( bCheckVert )
            {
                nRow = nMergedY - nStep;
                if( nRow >= nMinRow )
                {
                    nCol = nMergedX;
                    for( i = 0; (i <= nStep) && (nCol >= nMinCol); i++, nCol-- )
                    {
                        if( checkMergeOrigin( xTable, nMergedX, nMergedY, nCol, nRow, bCheckVert ) )
                        {
                            rOriginX = nCol; rOriginY = nRow;
                            return true;
                        }

                        if( !bCheckVert )
                        {
                            if( nCol == nMergedX )
                            {
                                nMinRow = nRow+1;
                            }
                            else
                            {
                                bCheckVert = true;
                            }
                            break;
                        }
                    }
                }
                else
                {
                    bCheckVert = false;
                }
            }

            if( bCheckHorz )
            {
                nCol = nMergedX - nStep;
                if( nCol >= nMinCol )
                {
                    nRow = nMergedY;
                    for( i = 0; (i < nStep) && (nRow >= nMinRow); i++, nRow-- )
                    {
                        if( checkMergeOrigin( xTable, nMergedX, nMergedY, nCol, nRow, bCheckHorz ) )
                        {
                            rOriginX = nCol; rOriginY = nRow;
                            return true;
                        }

                        if( !bCheckHorz )
                        {
                            if( nRow == nMergedY )
                            {
                                nMinCol = nCol+1;
                            }
                            else
                            {
                                bCheckHorz = true;
                            }
                            break;
                        }
                    }
                }
                else
                {
                    bCheckHorz = false;
                }
            }
            nStep++;
        }
        while( bCheckVert || bCheckHorz );
	}
	catch( Exception& )
	{
		DBG_ERROR("sdr::table::TableLayouter::findMergeOrigin(), exception caught!");
	}
	return false;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getMinimumColumnWidth( sal_Int32 nColumn )
{
	if( isValidColumn( nColumn ) )
	{
		return maColumns[nColumn].mnMinSize;
	}
	else
	{
		DBG_ERROR( "TableLayouter::getMinimumColumnWidth(), column out of range!" );
		return 0;
	}
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::distribute( LayoutVector& rLayouts, sal_Int32 nDistribute )
{
	// break loops after 100 runs to avoid freezing office due to developer error
	sal_Int32 nSafe = 100;

	const sal_Size nCount = rLayouts.size();
	sal_Size nIndex;

	bool bConstrainsBroken = false;

	do
	{
		// first enforce minimum size constrains on all entities
		for( nIndex = 0; nIndex < nCount; ++nIndex )
		{
			Layout& rLayout = rLayouts[nIndex];
			if( rLayout.mnSize < rLayout.mnMinSize )
			{
				nDistribute -= rLayout.mnMinSize - rLayout.mnSize;
				rLayout.mnSize = rLayout.mnMinSize;
			}
		}

		// calculate current width
		// if nDistribute is < 0 (shrinking), entities that are already
		// at minimum width are not counted
		sal_Int32 nCurrentWidth = 0;
		for( nIndex = 0; nIndex < nCount; ++nIndex )
		{
			Layout& rLayout = rLayouts[nIndex];
			if( (nDistribute > 0) || (rLayout.mnSize > rLayout.mnMinSize) )
				nCurrentWidth += rLayout.mnSize;
		}

		bConstrainsBroken = false;

		// now distribute over entities
		if( (nCurrentWidth != 0) && (nDistribute != 0) )
		{
			sal_Int32 nDistributed = nDistribute;
			for( nIndex = 0; nIndex < nCount; ++nIndex )
			{
				Layout& rLayout = rLayouts[nIndex];
				if( (nDistribute > 0) || (rLayout.mnSize > rLayout.mnMinSize) )
				{
					sal_Int32 n;
					if( nIndex == (nCount-1) )
						n = nDistributed; // for last entitie, use up rest
					else
						n  = (nDistribute * rLayout.mnSize) / nCurrentWidth; //

					nDistributed -= n;
					rLayout.mnSize += n;

					if( rLayout.mnSize < rLayout.mnMinSize )
						bConstrainsBroken = true;
				}
			}
		}
	} while( bConstrainsBroken && --nSafe );

	sal_Int32 nSize = 0;
	for( nIndex = 0; nIndex < nCount; ++nIndex )
		nSize += rLayouts[nIndex].mnSize;

	return nSize;
}

// -----------------------------------------------------------------------------

typedef std::vector< CellRef > MergeableCellVector;
typedef std::vector< MergeableCellVector > MergeVector;
typedef std::vector< sal_Int32 > Int32Vector;

// -----------------------------------------------------------------------------

void TableLayouter::LayoutTableWidth( Rectangle& rArea, bool bFit )
{
	const sal_Int32 nColCount = getColumnCount();
	const sal_Int32 nRowCount = getRowCount();
	if( nColCount == 0 )
		return;

	MergeVector aMergedCells( nColCount );
	Int32Vector aOptimalColumns;

	const OUString sOptimalSize( RTL_CONSTASCII_USTRINGPARAM("OptimalSize") );

	if( sal::static_int_cast< sal_Int32 >( maColumns.size() ) != nColCount )
		maColumns.resize( nColCount );

	Reference< XTableColumns > xCols( mxTable->getColumns(), UNO_QUERY_THROW );

	// first calculate current width and initial minimum width per column,
	// merged cells will be counted later
	sal_Int32 nCurrentWidth = 0;
	sal_Int32 nCol = 0, nRow = 0;
	for( nCol = 0; nCol < nColCount; nCol++ )
	{
		sal_Int32 nMinWidth = 0;

		bool bIsEmpty = true; // check if all cells in this column are merged

		for( nRow = 0; nRow < nRowCount; ++nRow )
		{
			CellRef xCell( getCell( CellPos( nCol, nRow ) ) );
			if( xCell.is() && !xCell->isMerged() )
			{
				bIsEmpty = false;

				sal_Int32 nColSpan = xCell->getColumnSpan();
				if( nColSpan > 1 )
				{
					// merged cells will be evaluated later
					aMergedCells[nCol+nColSpan-1].push_back( xCell );
				}
				else
				{
					nMinWidth = std::max( nMinWidth, xCell->getMinimumSize().Width );
				}
			}
		}

		maColumns[nCol].mnMinSize = nMinWidth;

		if( bIsEmpty )
		{
			maColumns[nCol].mnSize = 0;
		}
		else
		{
			sal_Int32 nColWidth = 0;
			Reference< XPropertySet > xColSet( xCols->getByIndex( nCol ), UNO_QUERY_THROW );
			sal_Bool bOptimal = sal_False;
			xColSet->getPropertyValue( sOptimalSize ) >>= bOptimal;
			if( bOptimal )
			{
				aOptimalColumns.push_back(nCol);
			}
			else
			{
				xColSet->getPropertyValue( msSize ) >>= nColWidth;
			}

			maColumns[nCol].mnSize = nColWidth;

			if( maColumns[nCol].mnSize < nMinWidth )
				maColumns[nCol].mnSize = nMinWidth;

			nCurrentWidth += maColumns[nCol].mnSize;
		}
	}

	// if we have optimal sized rows, distribute what is given (left)
	if( !bFit && !aOptimalColumns.empty() && (nCurrentWidth < rArea.getWidth()) )
	{
		sal_Int32 nLeft = rArea.getWidth() - nCurrentWidth;
		sal_Int32 nDistribute = nLeft / aOptimalColumns.size();

		Int32Vector::iterator iter( aOptimalColumns.begin() );
		while( iter != aOptimalColumns.end() )
		{
			sal_Int32 nOptCol = (*iter++);
			if( iter == aOptimalColumns.end() )
				nDistribute = nLeft;

			maColumns[nOptCol].mnSize += nDistribute;
			nLeft -= nDistribute;
		}

		DBG_ASSERT( nLeft == 0, "svx::TableLayouter::LayoutTableWidtht(), layouting failed!" );
	}

	// now check if merged cells fit
	for( nCol = 1; nCol < nColCount; ++nCol )
	{
		bool bChanges = false;
		MergeableCellVector::iterator iter( aMergedCells[nCol].begin() );

		const sal_Int32 nOldSize = maColumns[nCol].mnSize;

		while( iter != aMergedCells[nCol].end() )
		{
			CellRef xCell( (*iter++) );
			sal_Int32 nMinWidth = xCell->getMinimumSize().Width;

			for( sal_Int32 nMCol = nCol - xCell->getColumnSpan() + 1; (nMCol > 0) && (nMCol < nCol); ++nMCol )
				nMinWidth -= maColumns[nMCol].mnSize;

			if( nMinWidth > maColumns[nCol].mnMinSize )
				maColumns[nCol].mnMinSize = nMinWidth;

			if( nMinWidth > maColumns[nCol].mnSize )
			{
				maColumns[nCol].mnSize = nMinWidth;
				bChanges = true;
			}
		}

		if( bChanges )
			nCurrentWidth += maColumns[nCol].mnSize - nOldSize;
	}

	// now scale if wanted and needed
	if( bFit && (nCurrentWidth != rArea.getWidth()) )
		distribute( maColumns, rArea.getWidth() - nCurrentWidth );

	// last step, update left edges
	sal_Int32 nNewWidth = 0;

	const bool bRTL = meWritingMode == WritingMode_RL_TB;
	RangeIterator<sal_Int32> coliter( 0, nColCount, !bRTL );
	while( coliter.next(nCol ) )
	{
		maColumns[nCol].mnPos = nNewWidth;
		nNewWidth += maColumns[nCol].mnSize;
		if( bFit )
		{
			Reference< XPropertySet > xColSet( xCols->getByIndex(nCol), UNO_QUERY_THROW );
			xColSet->setPropertyValue( msSize, Any( maColumns[nCol].mnSize ) );
		}
	}

	rArea.SetSize( Size( nNewWidth, rArea.GetHeight() ) );
	updateCells( rArea );
}

// -----------------------------------------------------------------------------

void TableLayouter::LayoutTableHeight( Rectangle& rArea, bool bFit )
{
	const sal_Int32 nColCount = getColumnCount();
	const sal_Int32 nRowCount = getRowCount();
	if( nRowCount == 0 )
		return;

	Reference< XTableRows > xRows( mxTable->getRows() );

	MergeVector aMergedCells( nRowCount );
	Int32Vector aOptimalRows;

	const OUString sOptimalSize( RTL_CONSTASCII_USTRINGPARAM("OptimalSize") );

	// first calculate current height and initial minimum size per column,
	// merged cells will be counted later
	sal_Int32 nCurrentHeight = 0;
	sal_Int32 nCol, nRow;
	for( nRow = 0; nRow < nRowCount; ++nRow )
	{
		sal_Int32 nMinHeight = 0;

		bool bIsEmpty = true; // check if all cells in this row are merged

		for( nCol = 0; nCol < nColCount; ++nCol )
		{
			CellRef xCell( getCell( CellPos( nCol, nRow ) ) );
			if( xCell.is() && !xCell->isMerged() )
			{
				bIsEmpty = false;

				sal_Int32 nRowSpan = xCell->getRowSpan();
				if( nRowSpan > 1 )
				{
					// merged cells will be evaluated later
					aMergedCells[nRow+nRowSpan-1].push_back( xCell );
				}
				else
				{
					nMinHeight = std::max( nMinHeight, xCell->getMinimumSize().Height );
				}
			}
		}

		maRows[nRow].mnMinSize = nMinHeight;

		if( bIsEmpty )
		{
			maRows[nRow].mnSize = 0;
		}
		else
		{
			sal_Int32 nRowHeight = 0;
			Reference< XPropertySet > xRowSet( xRows->getByIndex(nRow), UNO_QUERY_THROW );

			sal_Bool bOptimal = sal_False;
			xRowSet->getPropertyValue( sOptimalSize ) >>= bOptimal;
			if( bOptimal )
			{
				aOptimalRows.push_back( nRow );
			}
			else
			{
				xRowSet->getPropertyValue( msSize ) >>= nRowHeight;
			}

			maRows[nRow].mnSize = nRowHeight;

			if( maRows[nRow].mnSize < nMinHeight )
				maRows[nRow].mnSize = nMinHeight;

			nCurrentHeight += maRows[nRow].mnSize;
		}
	}

	// if we have optimal sized rows, distribute what is given (left)
	if( !bFit && !aOptimalRows.empty() && (nCurrentHeight < rArea.getHeight()) )
	{
		sal_Int32 nLeft = rArea.getHeight() - nCurrentHeight;
		sal_Int32 nDistribute = nLeft / aOptimalRows.size();

		Int32Vector::iterator iter( aOptimalRows.begin() );
		while( iter != aOptimalRows.end() )
		{
			sal_Int32 nOptRow = (*iter++);
			if( iter == aOptimalRows.end() )
				nDistribute = nLeft;

			maRows[nOptRow].mnSize += nDistribute;
			nLeft -= nDistribute;

		}

		DBG_ASSERT( nLeft == 0, "svx::TableLayouter::LayoutTableHeight(), layouting failed!" );
	}

	// now check if merged cells fit
	for( nRow = 1; nRow < nRowCount; ++nRow )
	{
		bool bChanges = false;
		sal_Int32 nOldSize = maRows[nRow].mnSize;

		MergeableCellVector::iterator iter( aMergedCells[nRow].begin() );
		while( iter != aMergedCells[nRow].end() )
		{
			CellRef xCell( (*iter++) );
			sal_Int32 nMinHeight = xCell->getMinimumSize().Height;

			for( sal_Int32 nMRow = nRow - xCell->getRowSpan() + 1; (nMRow > 0) && (nMRow < nRow); ++nMRow )
				nMinHeight -= maRows[nMRow].mnSize;

			if( nMinHeight > maRows[nRow].mnMinSize )
				maRows[nRow].mnMinSize = nMinHeight;

			if( nMinHeight > maRows[nRow].mnSize )
			{
				maRows[nRow].mnSize = nMinHeight;
				bChanges = true;
			}
		}
		if( bChanges )
			nCurrentHeight += maRows[nRow].mnSize - nOldSize;
	}

	// now scale if wanted and needed
	if( bFit && nCurrentHeight != rArea.getHeight() )
		distribute( maRows, rArea.getHeight() - nCurrentHeight );

	// last step, update left edges
	sal_Int32 nNewHeight = 0;
	for( nRow = 0; nRow < nRowCount; ++nRow )
	{
		maRows[nRow].mnPos = nNewHeight;
		nNewHeight += maRows[nRow].mnSize;

		if( bFit )
		{
			Reference< XPropertySet > xRowSet( xRows->getByIndex(nRow), UNO_QUERY_THROW );
			xRowSet->setPropertyValue( msSize, Any( maRows[nRow].mnSize ) );
		}
	}

	rArea.SetSize( Size( rArea.GetWidth(), nNewHeight ) );
	updateCells( rArea );
}

// -----------------------------------------------------------------------------

/** try to fit the table into the given rectangle.
	If the rectangle is to small, it will be grown to fit the table. */
void TableLayouter::LayoutTable( Rectangle& rRectangle, bool bFitWidth, bool bFitHeight )
{
	if( !mxTable.is() )
		return;

	const sal_Int32 nRowCount = mxTable->getRowCount();
	const sal_Int32 nColCount = mxTable->getColumnCount();

	if( (nRowCount != getRowCount()) || (nColCount != getColumnCount()) )
	{
		if( static_cast< sal_Int32 >( maRows.size() ) != nRowCount )
			maRows.resize( nRowCount );

		Reference< XTableRows > xRows( mxTable->getRows() );
		for( sal_Int32 nRow = 0; nRow < nRowCount; nRow++ )
			maRows[nRow].clear();

		if( static_cast< sal_Int32 >( maColumns.size() ) != nColCount )
			maColumns.resize( nColCount );

		for( sal_Int32 nCol = 0; nCol < nColCount; nCol++ )
			maColumns[nCol].clear();
	}

	LayoutTableWidth( rRectangle, bFitWidth );
	LayoutTableHeight( rRectangle, bFitHeight );
	UpdateBorderLayout();
}

// -----------------------------------------------------------------------------

void TableLayouter::updateCells( Rectangle& rRectangle )
{
	const sal_Int32 nColCount = getColumnCount();
	const sal_Int32 nRowCount = getRowCount();

	CellPos aPos;
	for( aPos.mnRow = 0; aPos.mnRow < nRowCount; aPos.mnRow++ )
	{
		for( aPos.mnCol = 0; aPos.mnCol < nColCount; aPos.mnCol++ )
		{
			CellRef xCell( getCell( aPos ) );
			if( xCell.is() )
			{
				basegfx::B2IRectangle aCellArea;
				getCellArea( aPos, aCellArea );

				Rectangle aCellRect;
				aCellRect.nLeft = aCellArea.getMinX();
				aCellRect.nRight = aCellArea.getMaxX();
				aCellRect.nTop = aCellArea.getMinY();
				aCellRect.nBottom = aCellArea.getMaxY();
				aCellRect.Move( rRectangle.nLeft, rRectangle.nTop );
				xCell->setCellRect( aCellRect );
			}
		}
	}
}

// -----------------------------------------------------------------------------

CellRef TableLayouter::getCell( const CellPos& rPos ) const
{
	CellRef xCell;
	if( mxTable.is() ) try
	{
		xCell.set( dynamic_cast< Cell* >( mxTable->getCellByPosition( rPos.mnCol, rPos.mnRow ).get() ) );
	}
	catch( Exception& )
	{
		DBG_ERROR( "sdr::table::TableLayouter::getCell(), exception caught!" );
	}
	return xCell;
}

// -----------------------------------------------------------------------------

bool TableLayouter::HasPriority( const SvxBorderLine* pThis, const SvxBorderLine* pOther )
{
	if (!pThis || ((pThis == &gEmptyBorder) && (pOther != 0)))
		return false;
	if (!pOther || (pOther == &gEmptyBorder))
		return true;

	sal_uInt16 nThisSize = pThis->GetOutWidth() + pThis->GetDistance() + pThis->GetInWidth();
	sal_uInt16 nOtherSize = pOther->GetOutWidth() + pOther->GetDistance() + pOther->GetInWidth();

	if (nThisSize > nOtherSize)
		return true;

	else if (nThisSize < nOtherSize)
	{
		return false;
	}
	else
	{
		if ( pOther->GetInWidth() && !pThis->GetInWidth() )
		{
			return true;
		}
		else if ( pThis->GetInWidth() && !pOther->GetInWidth() )
		{
			return false;
		}
		else
		{
			return true;			//! ???
		}
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::SetBorder( sal_Int32 nCol, sal_Int32 nRow, bool bHorizontal, const SvxBorderLine* pLine )
{
	if( pLine == 0 )
		pLine = &gEmptyBorder;

	SvxBorderLine *pOld = bHorizontal ? maHorizontalBorders[nCol][nRow] : maVerticalBorders[nCol][nRow];

	if( HasPriority( pLine, pOld ) )
	{
		if( (pOld != 0) && (pOld != &gEmptyBorder) )
			delete pOld;

		SvxBorderLine* pNew = ( pLine != &gEmptyBorder ) ?  new SvxBorderLine(*pLine) : &gEmptyBorder;

		if( bHorizontal )
			maHorizontalBorders[nCol][nRow] = pNew;
		else
			maVerticalBorders[nCol][nRow]  = pNew;
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::ClearBorderLayout()
{
	ClearBorderLayout(maHorizontalBorders);
	ClearBorderLayout(maVerticalBorders);
}

// -----------------------------------------------------------------------------

void TableLayouter::ClearBorderLayout(BorderLineMap& rMap)
{
	const sal_Int32 nColCount = rMap.size();

	for( sal_Int32 nCol = 0; nCol < nColCount; nCol++ )
	{
		const sal_Int32 nRowCount = rMap[nCol].size();
		for( sal_Int32 nRow = 0; nRow < nRowCount; nRow++ )
		{
			SvxBorderLine* pLine = rMap[nCol][nRow];
			if( pLine )
			{
				if( pLine != &gEmptyBorder )
					delete pLine;

				rMap[nCol][nRow] = 0;
			}
		}
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::ResizeBorderLayout()
{
	ClearBorderLayout();
	ResizeBorderLayout(maHorizontalBorders);
	ResizeBorderLayout(maVerticalBorders);
}

// -----------------------------------------------------------------------------

void TableLayouter::ResizeBorderLayout( BorderLineMap& rMap )
{
	const sal_Int32 nColCount = getColumnCount() + 1;
	const sal_Int32 nRowCount = getRowCount() + 1;

	if( sal::static_int_cast<sal_Int32>(rMap.size()) != nColCount )
		rMap.resize( nColCount );

	for( sal_Int32 nCol = 0; nCol < nColCount; nCol++ )
	{
		if( sal::static_int_cast<sal_Int32>(rMap[nCol].size()) != nRowCount )
			rMap[nCol].resize( nRowCount );
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::UpdateBorderLayout()
{
	// make sure old border layout is cleared and border maps have correct size
	ResizeBorderLayout();

	const sal_Int32 nColCount = getColumnCount();
	const sal_Int32 nRowCount = getRowCount();

	CellPos aPos;
	for( aPos.mnRow = 0; aPos.mnRow < nRowCount; aPos.mnRow++ )
	{
		for( aPos.mnCol = 0; aPos.mnCol < nColCount; aPos.mnCol++ )
		{
			CellRef xCell( getCell( aPos ) );
			if( !xCell.is() || xCell->isMerged() )
				continue;

			const SvxBoxItem* pThisAttr = (const SvxBoxItem*)xCell->GetItemSet().GetItem( SDRATTR_TABLE_BORDER );
			OSL_ENSURE(pThisAttr,"sdr::table::TableLayouter::UpdateBorderLayout(), no border attribute?");

			if( !pThisAttr )
				continue;

			const sal_Int32 nLastRow = xCell->getRowSpan() + aPos.mnRow;
			const sal_Int32 nLastCol = xCell->getColumnSpan() + aPos.mnCol;

			for( sal_Int32 nRow = aPos.mnRow; nRow < nLastRow; nRow++ )
			{
				SetBorder( aPos.mnCol, nRow, false, pThisAttr->GetLeft() );
				SetBorder( nLastCol, nRow, false, pThisAttr->GetRight() );
			}

			for( sal_Int32 nCol = aPos.mnCol; nCol < nLastCol; nCol++ )
			{
				SetBorder( nCol, aPos.mnRow, true, pThisAttr->GetTop() );
				SetBorder( nCol, nLastRow, true, pThisAttr->GetBottom() );
			}
		}
	}
}

// -----------------------------------------------------------------------------
/*
void TableLayouter::SetLayoutToModel()
{
	const sal_Int32 nRowCount = getRowCount();
	const sal_Int32 nColCount = getColumnCount();

	try
	{
		sal_Int32 nOldSize = 0;

		Reference< XIndexAccess > xRows( mxTable->getRows(), UNO_QUERY_THROW );
		for( sal_Int32 nRow = 0; nRow < nRowCount; nRow++ )
		{
			Reference< XPropertySet > xRowSet( xRows->getByIndex( nRow ), UNO_QUERY_THROW );
			xRowSet->getPropertyValue( msSize ) >>= nOldSize;
			if( maRows[nRow].mnSize != nOldSize )
				xRowSet->setPropertyValue( msSize, Any( maRows[nRow].mnSize )  );
		}

		for( sal_Int32 nCol = 0; nCol < nColCount; nCol++ )
		{
			Reference< XPropertySet > xColSet( getColumnByIndex( nCol ), UNO_QUERY_THROW );
			xColSet->getPropertyValue( msSize ) >>= nOldSize;
			if( maColumns[nCol].mnSize != nOldSize )
				xColSet->setPropertyValue( msSize, Any( maColumns[nCol].mnSize )  );
		}
	}
	catch( Exception& )
	{
		DBG_ERROR("sdr::table::TableLayouter::SetLayoutToModel(), exception caught!");
	}
}
*/
// -----------------------------------------------------------------------------

void TableLayouter::DistributeColumns( ::Rectangle& rArea, sal_Int32 nFirstCol, sal_Int32 nLastCol )
{
	if( mxTable.is() ) try
	{
		const sal_Int32 nColCount = getColumnCount();

		if( (nFirstCol < 0) || (nFirstCol>= nLastCol) || (nLastCol >= nColCount) )
			return;

		sal_Int32 nAllWidth = 0;
		for( sal_Int32 nCol = nFirstCol; nCol <= nLastCol; ++nCol )
			nAllWidth += getColumnWidth(nCol);

		sal_Int32 nWidth = nAllWidth / (nLastCol-nFirstCol+1);

		Reference< XTableColumns > xCols( mxTable->getColumns(), UNO_QUERY_THROW );

		for( sal_Int32 nCol = nFirstCol; nCol <= nLastCol; ++nCol )
		{
			if( nCol == nLastCol )
				nWidth = nAllWidth; // last column get round errors

			Reference< XPropertySet > xColSet( xCols->getByIndex( nCol ), UNO_QUERY_THROW );
			xColSet->setPropertyValue( msSize, Any( nWidth ) );

			nAllWidth -= nWidth;
		}

		LayoutTable( rArea, true, false );
	}
	catch( Exception& e )
	{
		(void)e;
		DBG_ERROR("sdr::table::TableLayouter::DistributeColumns(), exception caught!");
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::DistributeRows( ::Rectangle& rArea, sal_Int32 nFirstRow, sal_Int32 nLastRow )
{
	if( mxTable.is() ) try
	{
		const sal_Int32 nRowCount = mxTable->getRowCount();

		if( (nFirstRow < 0) || (nFirstRow>= nLastRow) || (nLastRow >= nRowCount) )
			return;

		sal_Int32 nAllHeight = 0;
		sal_Int32 nMinHeight = 0;

		for( sal_Int32 nRow = nFirstRow; nRow <= nLastRow; ++nRow )
		{
			nMinHeight = std::max( maRows[nRow].mnMinSize, nMinHeight );
			nAllHeight += maRows[nRow].mnSize;
		}

		const sal_Int32 nRows = (nLastRow-nFirstRow+1);
		sal_Int32 nHeight = nAllHeight / nRows;

		if( nHeight < nMinHeight )
		{
			sal_Int32 nNeededHeight = nRows * nMinHeight;
			rArea.nBottom += nNeededHeight - nAllHeight;
			nHeight = nMinHeight;
			nAllHeight = nRows * nMinHeight;
		}

		Reference< XTableRows > xRows( mxTable->getRows(), UNO_QUERY_THROW );
		for( sal_Int32 nRow = nFirstRow; nRow <= nLastRow; ++nRow )
		{
			if( nRow == nLastRow )
				nHeight = nAllHeight; // last row get round errors

			Reference< XPropertySet > xRowSet( xRows->getByIndex( nRow ), UNO_QUERY_THROW );
			xRowSet->setPropertyValue( msSize, Any( nHeight ) );

			nAllHeight -= nHeight;
		}

		LayoutTable( rArea, false, true );
	}
	catch( Exception& e )
	{
		(void)e;
		DBG_ERROR("sdr::table::TableLayouter::DistributeRows(), exception caught!");
	}
}

// -----------------------------------------------------------------------------

void TableLayouter::SetWritingMode( com::sun::star::text::WritingMode eWritingMode )
{
	meWritingMode = eWritingMode;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getColumnStart( sal_Int32 nColumn ) const
{
	if( isValidColumn(nColumn) )
		return maColumns[nColumn].mnPos;
	else
		return 0;
}

// -----------------------------------------------------------------------------

sal_Int32 TableLayouter::getRowStart( sal_Int32 nRow ) const
{
	if( isValidRow(nRow) )
		return maRows[nRow].mnPos;
	else
		return 0;
}

// -----------------------------------------------------------------------------

/*
sal_Int32 TableLayouter::detectInsertedOrRemovedRows()
{
	sal_Int32 nHeightChange = 0;

	try
	{
		Reference< XIndexAccess > xRows( mxTable->getRows(), UNO_QUERY_THROW );
		std::vector< ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > >::iterator oldIter( mxRows.begin() );
		sal_Int32 nCount = xRows->getCount();
		for( sal_Int32 nRow = 0; nRow < nCount; nRow++ )
		{
			Reference< XInterface > xRow( xRows->getByIndex(nRow), UNO_QUERY );

			std::vector< ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > >::iterator searchIter = mxRows.end();
			if( oldIter != mxRows.end() )
				searchIter = std::find( oldIter,mxRows.end(), xRow );

			if( searchIter == mxRows.end() )
			{
				// new row
				Reference< XPropertySet > xSet( xRow, UNO_QUERY_THROW );
				sal_Int32 nSize = 0;
				xSet->getPropertyValue( msSize ) >>= nSize;
				nHeightChange += nSize;
			}
			else if( searchIter == oldIter )
			{
				// no change
				oldIter++;
			}
			else
			{
				// rows removed
				do
				{
					Reference< XPropertySet > xSet( (*oldIter), UNO_QUERY_THROW );
					sal_Int32 nSize = 0;
					xSet->getPropertyValue( msSize ) >>= nSize;
					nHeightChange -= nSize;
				}
				while( oldIter++ != searchIter );
			}
		}

		while( oldIter != mxRows.end() )
		{
			// rows removed
			Reference< XPropertySet > xSet( (*oldIter++), UNO_QUERY_THROW );
			sal_Int32 nSize = 0;
			xSet->getPropertyValue( msSize ) >>= nSize;
			nHeightChange -= nSize;
		}
	}
	catch( Exception& e )
	{
		(void)e;
		DBG_ERROR("svx::TableLayouter::detectInsertedOrRemovedRows(), exception caught!");
	}

	return nHeightChange;
}
*/

// -----------------------------------------------------------------------------

} }