lyx_mirror/src/table.C

/* This file is part of
 * ====================================================== 
 * 
 *           LyX, The Document Processor
 * 	 
 *	  Copyright 1995 Matthias Ettrich
 *        Copyright 1995-2000 The LyX Team.
 *
 * ====================================================== 
 */

#include <config.h>

#include <algorithm>
#include <cstdlib>

#ifdef __GNUG__
#pragma implementation
#endif

#include "table.h"
#include "debug.h"
#include "vspace.h"
#include "layout.h"
#include "support/lstrings.h"
#include "support/lyxmanip.h"
#include "lyx_gui_misc.h"
#include "insets/insettext.h"

using std::ostream;
using std::istream;
using std::max;
using std::endl;

static int const WIDTH_OF_LINE = 5;

/// Define a few methods for the inner structs

LyXTable::cellstruct::cellstruct(Buffer * buf) 
{
	cellno = 0; //should be initilaized correctly later.
	width_of_cell = 0;
	multicolumn = LyXTable::CELL_NORMAL;
	alignment = LYX_ALIGN_CENTER;
	top_line = true;
	bottom_line = false;
	has_cont_row = false;
	rotate = false;
	linebreaks = false;
	buf ? inset = new InsetText(buf): inset = 0;
	
}

LyXTable::cellstruct::~cellstruct() 
{
    if (inset)
	delete inset;
}

LyXTable::cellstruct & 
  LyXTable::cellstruct::operator=(cellstruct const & cs)
{
	cellno = cs.cellno;
	width_of_cell = cs.width_of_cell;
	multicolumn = cs.multicolumn;
	alignment = cs.alignment;
	top_line = cs.top_line;
	bottom_line = cs.bottom_line;
	has_cont_row = cs.has_cont_row;
	rotate = cs.rotate;
	linebreaks = cs.linebreaks;
	return *this;
}

LyXTable::rowstruct::rowstruct() 
{
	top_line = true;
	bottom_line = false;
	is_cont_row = false;
	ascent_of_row = 0;
	descent_of_row = 0;
	newpage = false;
}

// Nothing to do, but gcc 2.7.2.3 wants one... (JMarc)
LyXTable::rowstruct::~rowstruct() 
{
}

LyXTable::rowstruct & 
  LyXTable::rowstruct::operator=(rowstruct const & rs)
{
	top_line = rs.top_line;
	bottom_line = rs.bottom_line;
	is_cont_row = rs.is_cont_row;
	ascent_of_row = rs.ascent_of_row;
	descent_of_row = rs.descent_of_row;
	newpage = rs.newpage;
	return *this;
}

LyXTable::columnstruct::columnstruct() 
{
        left_line = true;
        right_line = false;
        alignment = LYX_ALIGN_CENTER;
        width_of_column = 0;
}

LyXTable::columnstruct::~columnstruct() 
{
}

LyXTable::columnstruct & 
  LyXTable::columnstruct::operator=(columnstruct const & cs)
{
        left_line = cs.left_line;
        right_line = cs.right_line;
        alignment = cs.alignment;
        width_of_column = cs.width_of_column;
	p_width = cs.p_width;
	align_special = cs.align_special;
	return *this;
}

/* konstruktor */
LyXTable::LyXTable(int rows_arg, int columns_arg, Buffer *buf)
{
    buffer = buf;
    Init(rows_arg, columns_arg);
}


LyXTable::LyXTable(LyXTable const & lt, Buffer * buf)
{
    buffer = buf;
    Init(lt.rows, lt.columns);
    
    operator=(lt);
}

LyXTable::LyXTable(LyXLex & lex, Buffer *buf)
{
    istream & is = lex.getStream();
    buffer = buf;
    Read(is);
}


LyXTable::~LyXTable()
{
    delete[] rowofcell;
    delete[] columnofcell;
    delete[] column_info;
    delete[] row_info;
    for (int i = 0; i < rows; ++i) {
	delete[] cell_info[i];
    }
    delete[] cell_info;
}


LyXTable & LyXTable::operator=(LyXTable const & lt)
{
    // If this and lt is not of the same size we have a serious bug
    // So then it is ok to throw an exception, or for now
    // call abort()
    Assert(rows == lt.rows && columns == lt.columns);

    int row = 0, column = 0;
    
    for (row = 0; row < rows; ++row) {
        for (column = 0; column < columns; ++column) {
            cell_info[row][column] = lt.cell_info[row][column];
        }
    }
    
    for (row = 0; row < rows; ++row) {
        row_info[row] = lt.row_info[row];
    }
    
    for (column = 0; column < columns; ++column) {
	column_info[column] = lt.column_info[column];
    }

    SetLongTable(lt.is_long_table);
    rotate = lt.rotate;
    Reinit();
    
    return *this;
}

LyXTable * LyXTable::Clone()
{
    LyXTable * result = new LyXTable(rows, columns);
    int row, column;;

    for (row = 0; row < rows; ++row) {
        for (column = 0; column < columns; ++column) {
            result->cell_info[row][column] = cell_info[row][column];
        }
    }

    for (row = 0; row < rows; ++row) {
        result->row_info[row] = row_info[row];
    }

    for (column = 0; column < columns; ++column) {
        result->column_info[column].left_line = column_info[column].left_line;
        result->column_info[column].right_line = column_info[column].right_line;
        result->column_info[column].alignment = column_info[column].alignment;
        result->column_info[column].p_width = column_info[column].p_width;
        result->column_info[column].align_special = column_info[column].align_special;
    }
  
    result->SetLongTable(is_long_table);
    result->rotate = rotate;
    result->Reinit();
    return result;
}


/* activates all lines and sets all widths to 0 */ 
void LyXTable::Init(int rows_arg, int columns_arg)
{
    int i, j;
    rows = rows_arg;
    columns = columns_arg;
    column_info = new columnstruct[columns];
    row_info = new rowstruct[rows];
    cell_info = new cellstruct*[rows];

    int cellno = 0;
    for (i = 0; i < rows; ++i) {
        cell_info[i] = new cellstruct[columns](buffer);
        for (j = 0; j < columns; ++j) {
            cell_info[i][j].cellno = cellno++;
        }
    }
    row_info[i-1].bottom_line = true;
    row_info[0].bottom_line = true;

    for (i = 0; i < columns; ++i) {
        calculate_width_of_column(i);
    }
    column_info[i-1].right_line = true;
   
    calculate_width_of_table();

    rowofcell = 0;
    columnofcell = 0;
    set_row_column_number_info();
    is_long_table = false;
    rotate = 0;
    endhead = -1;
    endfirsthead = -1;
    endfoot = -1;
    endlastfoot = -1;
}


void LyXTable::AppendRow(int cell)
{
    int row = row_of_cell(cell);
    rowstruct * row_info2 = new rowstruct[rows + 1];
    cellstruct ** cell_info2 = new cellstruct * [rows + 1];
    int i;

    for (i = 0; i <= row; ++i) {
        cell_info2[i] = cell_info[i];
        row_info2[i] = row_info[i];
    }
    for (i = rows - 1; i >= row; --i) {
        cell_info2[i + 1] = cell_info[i];
        row_info2[i + 1] = row_info[i];
    }
    for (i = row; row_info[i].is_cont_row; --i);
    if (((row + 1) >= rows) || !row_info[row + 1].is_cont_row)
        row_info2[row + 1].is_cont_row = false;
    row_info2[row + 1].top_line = row_info[i].top_line;
    cell_info2[row + 1] = new cellstruct[columns];
    for (i = 0; i < columns; ++i) {
        cell_info2[row + 1][i].width_of_cell = 0;
        cell_info2[row + 1][i] = cell_info2[row][i];
    }
   
    delete[] cell_info;
    cell_info = cell_info2;
    delete[] row_info;
    row_info = row_info2;
   
    ++rows;
   
    Reinit();
}


void LyXTable::DeleteRow(int cell)
{
	int row = row_of_cell(cell);
        while(!row_info[row].is_cont_row && RowHasContRow(cell))
            DeleteRow(cell_info[row+1][0].cellno);
        rowstruct * row_info2 = new rowstruct[rows - 1];
	cellstruct ** cell_info2 = new cellstruct * [rows - 1];

	delete[] cell_info[row];
	int i = 0;
	for (; i < row; ++i) {
		cell_info2[i] = cell_info[i];
                row_info2[i] = row_info[i];
	}
        if (row_info[i].is_cont_row)
            row_info2[i - 1].bottom_line = row_info[i].bottom_line;
	for (i = row; i < rows - 1; ++i) {
		cell_info2[i] = cell_info[i + 1];
                row_info2[i] = row_info[i + 1];
	}

	delete[] cell_info;
	cell_info = cell_info2;
        delete[] row_info;
        row_info = row_info2;
   
	--rows;

	Reinit();
}


void LyXTable::AppendColumn(int cell)
{
    int j;
    columnstruct * column_info2 = new columnstruct[columns + 1];
    int column = right_column_of_cell(cell);

    int i = 0;
    for (; i <= column; ++i) {
        column_info2[i] = column_info[i];
    }
    for (i = columns - 1; i >= column; --i) {
        column_info2[i + 1] = column_info[i];
    }
    
    delete[] column_info;
    column_info = column_info2;
    
    for (i = 0; i < rows; ++i) {
        cellstruct * tmp = cell_info[i];
        cell_info[i] = new cellstruct[columns + 1];
        for (j = 0; j <= column; ++j) {
            cell_info[i][j] = tmp[j];
        }
        for (j = column; j < columns; ++j) {
            cell_info[i][j + 1] = tmp[j];
        }
        // care about multicolumns
        if (cell_info[i][column + 1].multicolumn
            == LyXTable::CELL_BEGIN_OF_MULTICOLUMN){
            cell_info[i][column + 1].multicolumn = 
                LyXTable::CELL_PART_OF_MULTICOLUMN;
        }
        if (column + 1 == columns
            || cell_info[i][column + 2].multicolumn
            != LyXTable::CELL_PART_OF_MULTICOLUMN){
            cell_info[i][column + 1].multicolumn = 
                LyXTable::CELL_NORMAL;
        }
        delete[] tmp;
    }
    
    ++columns;
    Reinit();
}


void LyXTable::Reinit()
{   
	int j;

	int i = 0;
	for (; i < rows; ++i) {
		for (j = 0; j < columns; ++j) {
			cell_info[i][j].width_of_cell = 0;
                        if ((i + 1 < rows) && !row_info[i+1].is_cont_row)
                            cell_info[i][j].has_cont_row = false;
		}
	}
  
	for (i = 0; i < columns; ++i) {
		calculate_width_of_column(i);
	}
	calculate_width_of_table();

	set_row_column_number_info();
}


void LyXTable::set_row_column_number_info()
{
	int c = 0;
	int column = 0;
	numberofcells = -1;
	int row = 0;
	for (; row < rows; ++row) {
		for (column = 0; column<columns; ++column) {
			if (cell_info[row][column].multicolumn
			    != LyXTable::CELL_PART_OF_MULTICOLUMN)
				++numberofcells;
                        cell_info[row][column].cellno = numberofcells;
		}
	}
	++numberofcells; // because this is one more than as we start from 0
	row = 0;
	column = 0;

	delete [] rowofcell;
	rowofcell = new int[numberofcells];
	delete [] columnofcell;
	columnofcell = new int[numberofcells];
  
	while (c < numberofcells && row < rows && column < columns) {
		rowofcell[c] = row;
		columnofcell[c] = column;
		++c;
		do {
			++column;
		} while (column < columns &&
			 cell_info[row][column].multicolumn
			 == LyXTable::CELL_PART_OF_MULTICOLUMN);
		if (column == columns) {
			column = 0;
			++row;
		}
	}
}


void LyXTable::DeleteColumn(int cell)
{
	int column1 = column_of_cell(cell);
	int column2 = right_column_of_cell(cell);
   
	if (column1 == 0 && column2 == columns - 1)
		return;
   
	for (int column = column1; column <= column2; ++column) {
		delete_column(column1);
	}
	Reinit();
}


int LyXTable::GetNumberOfCells()
{
	return numberofcells;
}


int LyXTable::NumberOfCellsInRow(int cell)
{
	int row = row_of_cell(cell);
	int result = 0;
	for (int i = 0; i < columns; ++i) {
		if (cell_info[row][i].multicolumn != LyXTable::CELL_PART_OF_MULTICOLUMN)
			++result;
	}
	return result;
}


int LyXTable::AppendCellAfterCell(int append_cell, int question_cell)
{
	return (right_column_of_cell(append_cell) == 
		right_column_of_cell(question_cell));
}


int LyXTable::DeleteCellIfColumnIsDeleted(int cell, int delete_column_cell)
{
    if (column_of_cell(delete_column_cell) == 0 && 
        right_column_of_cell(delete_column_cell) == columns - 1)
        return 0;
    else
        return
            (column_of_cell(cell) >= column_of_cell(delete_column_cell) &&
             column_of_cell(cell) <= right_column_of_cell(delete_column_cell));
}


/* returns 1 if there is a topline, returns 0 if not */ 
bool LyXTable::TopLine(int cell)
{
    int row = row_of_cell(cell);
    
    if (IsContRow(cell))
        return TopLine(cell_info[row-1][column_of_cell(cell)].cellno);
    if (IsMultiColumn(cell))
        return cellinfo_of_cell(cell)->top_line;
    return row_info[row].top_line;
}


bool LyXTable::BottomLine(int cell)
{
    //no bottom line underneath non-existent cells if you please
    if(cell >= numberofcells)
	return false;

    int row = row_of_cell(cell);
    
    if (RowHasContRow(cell))
        return BottomLine(cell_info[row+1][column_of_cell(cell)].cellno);
    if (IsMultiColumn(cell))
        return cellinfo_of_cell(cell)->bottom_line;
    return row_info[row_of_cell(cell)].bottom_line;
}


bool LyXTable::LeftLine(int cell)
{
	return column_info[column_of_cell(cell)].left_line;
}


bool LyXTable::RightLine(int cell)
{
	return column_info[right_column_of_cell(cell)].right_line;
}


bool LyXTable::TopAlreadyDrawed(int cell)
{
	if (AdditionalHeight(cell))
		return false;
	int row = row_of_cell(cell);
	if (row > 0){
		int column = column_of_cell(cell);
		while (column
		       && cell_info[row-1][column].multicolumn
		       == LyXTable::CELL_PART_OF_MULTICOLUMN)
			--column;
		if (cell_info[row-1][column].multicolumn
		    == LyXTable::CELL_NORMAL)
			return row_info[row-1].bottom_line;
		else
			return cell_info[row-1][column].bottom_line;
	}
	return false;
}


bool LyXTable::VeryLastRow(int cell)
{
	return (row_of_cell(cell) == rows - 1);
}


int LyXTable::AdditionalHeight(int cell)
{
	int row = row_of_cell(cell);
	if (!row) return 0;
	
	int top = 1; // bool top = true; ??
	int bottom = 1; // bool bottom = true; ??
	int column;

	for (column = 0; column < columns - 1 && bottom; ++column) {
		switch (cell_info[row - 1][column].multicolumn) {
		case LyXTable::CELL_BEGIN_OF_MULTICOLUMN:
			bottom = cell_info[row - 1][column].bottom_line;
			break;
		case LyXTable::CELL_NORMAL:
			bottom = row_info[row - 1].bottom_line;
		}
	}
	for (column = 0; column < columns - 1 && top; ++column) {
		switch (cell_info[row][column].multicolumn){
		case LyXTable::CELL_BEGIN_OF_MULTICOLUMN:
			top = cell_info[row][column].top_line;
			break;
		case LyXTable::CELL_NORMAL:
			top = row_info[row].top_line;
		}
	}
	if (top && bottom)
		return WIDTH_OF_LINE;
	return 0;
}


int LyXTable::AdditionalWidth(int cell)
{
	// internally already set in SetWidthOfCell
	// used to get it back in text.C
	int col = right_column_of_cell(cell);
	if (col < columns - 1 && column_info[col].right_line &&
            column_info[col+1].left_line)
		return WIDTH_OF_LINE;
	else
		return 0;
}


// returns the maximum over all rows 
int LyXTable::WidthOfColumn(int cell)
{
	int column1 = column_of_cell(cell);
	int column2 = right_column_of_cell(cell);
	int result = 0;
	int i = column1;
	for (; i <= column2; ++i) {
		result += column_info[i].width_of_column;
	}
	return result;
}


int LyXTable::WidthOfTable()
{
	return width_of_table;
}

/* returns 1 if a complete update is necessary, otherwise 0 */ 
bool LyXTable::SetWidthOfMulticolCell(int cell, int new_width)
{
    if (!IsMultiColumn(cell))
        return false;
    
    int row = row_of_cell(cell);
    int column1 = column_of_cell(cell);
    int column2 = right_column_of_cell(cell);

    // first set columns to 0 so we can calculate the right width
    int i = column1;
    for (; i <= column2; ++i) {
        cell_info[row][i].width_of_cell = 0;
    }
    // set the width to MAX_WIDTH until width > 0
    int width = (new_width + 2 * WIDTH_OF_LINE);
    for (i = column1; (i < column2) && (width > 0); ++i) {
        cell_info[row][i].width_of_cell = column_info[i].width_of_column;
        width -= column_info[i].width_of_column;
    }
    if (i == column2) {
        cell_info[row][i].width_of_cell = width;
    }
    return true;
}


void LyXTable::recalculateMulticolCells(int cell, int new_width)
{
	int row = row_of_cell(cell);
	int column1 = column_of_cell(cell);
        int column2 = right_column_of_cell(cell);

    // first set columns to 0 so we can calculate the right width
        int i = column1;
    for (; i <= column2; ++i)
        cell_info[row][i].width_of_cell = 0;
    for(i = cell + 1; (i < numberofcells) && (!IsMultiColumn(i)); ++i)
        ;
    if (i < numberofcells)
        recalculateMulticolCells(i, GetWidthOfCell(i) - (2 * WIDTH_OF_LINE));
    SetWidthOfMulticolCell(cell, new_width);
}


/* returns 1 if a complete update is necessary, otherwise 0 */ 
bool LyXTable::SetWidthOfCell(int cell, int new_width)
{
    int row = row_of_cell(cell);
    int column1 = column_of_cell(cell);
    int tmp = 0;
    int width = 0;

    if (IsMultiColumn(cell)) {
        tmp = SetWidthOfMulticolCell(cell, new_width);
    } else {
	width = (new_width + 2*WIDTH_OF_LINE);
        cell_info[row][column1].width_of_cell = width;
        if (column_info[column1].right_line && (column1 < columns-1) &&
            column_info[column1+1].left_line) // additional width
            cell_info[row][column1].width_of_cell += WIDTH_OF_LINE;
        tmp = calculate_width_of_column_NMC(column1);
    }
    if (tmp) {
        int i;
        for(i = 0; i<columns;++i)
            calculate_width_of_column_NMC(i);
        for(i = 0; (i<numberofcells) && !IsMultiColumn(i); ++i)
            ;
        if (i<numberofcells)
            recalculateMulticolCells(i, GetWidthOfCell(i)-(2*WIDTH_OF_LINE));
        for(i = 0; i<columns;++i)
            calculate_width_of_column(i);
        calculate_width_of_table();
        return true;
    }
    return false;
}


bool LyXTable::SetAlignment(int cell, char align)
{
    if (!IsMultiColumn(cell))
        column_info[column_of_cell(cell)].alignment = align;
    cellinfo_of_cell(cell)->alignment = align;
    return true;
}

bool LyXTable::SetPWidth(int cell, string width)
{
    int fvcell = FirstVirtualCell(cell);

    if (IsMultiColumn(fvcell)) {
//        if (column_info[column_of_cell(cell)].p_width.empty())
//            column_info[column_of_cell(cell)].p_width = width;
        cellinfo_of_cell(fvcell)->p_width = width;
    } else {
        column_info[column_of_cell(fvcell)].p_width = width;
	if (!width.empty()) // do this only if there is a width
		SetAlignment(cell, LYX_ALIGN_LEFT);
    }
    return true;
}

bool LyXTable::SetAlignSpecial(int cell, string special, int what)
{
    if (what == SET_SPECIAL_MULTI)
        cellinfo_of_cell(cell)->align_special = special;
    else
        column_info[column_of_cell(cell)].align_special = special;
    return true;
}

bool LyXTable::SetAllLines(int cell, bool line)
{
    SetTopLine(cell, line);
    SetBottomLine(cell, line);
    SetRightLine(cell, line);
    SetLeftLine(cell, line);
    return true;
}

bool LyXTable::SetTopLine(int cell, bool line)
{
    int row = row_of_cell(cell);

    if (IsContRow(cell))
        SetTopLine(cell_info[row-1][column_of_cell(cell)].cellno, line);
    else if (!IsMultiColumn(cell))
        row_info[row].top_line = line;
    else
        cellinfo_of_cell(cell)->top_line = line;
    return true;
}


bool LyXTable::SetBottomLine(int cell, bool line)
{
    int row = row_of_cell(cell);

    if (RowHasContRow(cell))
        SetBottomLine(cell_info[row+1][column_of_cell(cell)].cellno, line);
    else if (!IsMultiColumn(cell))
        row_info[row_of_cell(cell)].bottom_line = line;
    else
        cellinfo_of_cell(cell)->bottom_line = line;
    return true;
}


bool LyXTable::SetLeftLine(int cell, bool line)
{
	column_info[column_of_cell(cell)].left_line = line;
	return true;
}


bool LyXTable::SetRightLine(int cell, bool line)
{
	column_info[right_column_of_cell(cell)].right_line = line;
	return true;
}


char LyXTable::GetAlignment(int cell)
{
	if (IsMultiColumn(cell))
		return cellinfo_of_cell(cell)->alignment;
	else
		return column_info[column_of_cell(cell)].alignment;
}

string LyXTable::GetPWidth(int cell)
{
	int fvcell = FirstVirtualCell(cell);
	
	if (IsMultiColumn(fvcell)) // && !cellinfo_of_cell(cell)->p_width.empty())
		return cellinfo_of_cell(fvcell)->p_width;
	return column_info[column_of_cell(fvcell)].p_width;
}

string LyXTable::GetAlignSpecial(int cell, int what)
{
    if (what == SET_SPECIAL_MULTI)
        return cellinfo_of_cell(cell)->align_special;
    return column_info[column_of_cell(cell)].align_special;
}

int LyXTable::GetWidthOfCell(int cell)
{
	int row = row_of_cell(cell);
	int column1 = column_of_cell(cell);
	int column2 = right_column_of_cell(cell);
	int result = 0;
	int i = column1;
	for (; i <= column2; ++i) {
		result += cell_info[row][i].width_of_cell;
	}
  
	result += AdditionalWidth(cell);
  
	return result;
}


int LyXTable::GetBeginningOfTextInCell(int cell)
{
	int x = 0;
   
	switch (GetAlignment(cell)){
	case LYX_ALIGN_CENTER:
		x += (WidthOfColumn(cell) - GetWidthOfCell(cell)) / 2;
		break;
	case LYX_ALIGN_RIGHT:
		x += WidthOfColumn(cell) - GetWidthOfCell(cell) + AdditionalWidth(cell);
		break;
	default: /* LYX_ALIGN_LEFT: nothing :-) */ 
		break;
	}

	// the LaTeX Way :-(
	x += WIDTH_OF_LINE;
	return x;
}


bool LyXTable::IsFirstCell(int cell)
{
	return (column_of_cell(cell) == 0);
}

bool LyXTable::IsLastCell(int cell)
{
	return (right_column_of_cell(cell) == (columns - 1));
}


bool LyXTable::calculate_width_of_column(int column)
{
	int old_column_width = column_info[column].width_of_column;
	int maximum = 0;

	for (int i = 0; i < rows; ++i) {
		maximum = max(cell_info[i][column].width_of_cell, maximum);
	}
	column_info[column].width_of_column = maximum;
	return (column_info[column].width_of_column != old_column_width);
}

bool LyXTable::calculate_width_of_column_NMC(int column)
{
    int old_column_width = column_info[column].width_of_column;
    int max = 0;
    for (int i = 0; i < rows; ++i) {
        if (!IsMultiColumn(GetCellNumber(column, i)) &&
            (cell_info[i][column].width_of_cell > max)) {
            max = cell_info[i][column].width_of_cell;
        }
    }
    column_info[column].width_of_column = max;
    return (column_info[column].width_of_column != old_column_width);
}

void LyXTable::calculate_width_of_table()
{
	width_of_table = 0;
	for (int i = 0; i < columns; ++i) {
		width_of_table += column_info[i].width_of_column;
	}
}


int LyXTable::row_of_cell(int cell) const
{
    if (cell >= numberofcells)
        return rows-1;
    else if (cell < 0)
        return 0;
    return rowofcell[cell];
}


int LyXTable::column_of_cell(int cell) const
{
    if (cell >= numberofcells)
        return columns-1;
    else if (cell < 0)
        return 0;
    return columnofcell[cell];
}


int LyXTable::right_column_of_cell(int cell) 
{
	int row = row_of_cell(cell);
	int column = column_of_cell(cell);
	while (column < columns - 1 &&
	       cell_info[row][column+1].multicolumn == LyXTable::CELL_PART_OF_MULTICOLUMN)
		++column;
	return column;
}


void LyXTable::Write(ostream & os, bool old_format)
{
    if (old_format) {
	int i, j;
	os << "multicol5\n"
	   << rows << " " << columns << " " << is_long_table << " "
	   << rotate << " " << endhead << " " << endfirsthead << " "
	   << endfoot << " " << endlastfoot << "\n";
	for (i = 0; i < rows; ++i) {
	    os << row_info[i].top_line << " "
	       << row_info[i].bottom_line << " "
	       << row_info[i].is_cont_row << " "
	       << row_info[i].newpage << "\n";
	}
	for (i = 0; i < columns; ++i) {
	    os << column_info[i].alignment << " "
	       << column_info[i].left_line << " "
	       << column_info[i].right_line << " \""
	       << VSpace(column_info[i].p_width).asLyXCommand() << "\" \""
	       << column_info[i].align_special << "\"\n";
	}

	for (i = 0; i < rows; ++i) {
	    for (j = 0; j < columns; ++j) {
		os << cell_info[i][j].multicolumn << " "
		   << cell_info[i][j].alignment << " "
		   << cell_info[i][j].top_line << " "
		   << cell_info[i][j].bottom_line << " "
		   << cell_info[i][j].has_cont_row << " "
		   << cell_info[i][j].rotate << " "
		   << cell_info[i][j].linebreaks << " \""
		   << cell_info[i][j].align_special << "\" \""
		   << cell_info[i][j].p_width << "\"\n";
	    }
	}
    } else {
	lyxerr << "New format type not yet implemented!!!\n" << endl;
    }
}


void LyXTable::Read(istream & is)
{
	int version;
	int i, j;
	int rows_arg = 0;
	int columns_arg = 0;
	int is_long_table_arg = false;
	int rotate_arg = false;
	int a = -1;
	int b = -1;
	int c = -1;
	int d = -1;
	int e = 0;
	int f = 0;
	int g = 0;
	int h = 0;
	
	string s;
	getline(is, s);
	if (s.length() > 8)
		version = atoi(s.c_str() + 8);
	else
		version = 1;
	if (version < 5) {
		lyxerr << "Tabular format < 5 is not supported anymore\n"
			"Get an older version of LyX (< 1.1.x) for conversion!"
		       << endl;
		WriteAlert(_("Warning:"),
			   _("Tabular format < 5 is not supported anymore\n"),
			   _("Get an older version of LyX (< 1.1.x) for conversion!"));
		if (version > 2) {
			is >> rows_arg >> columns_arg >> is_long_table_arg
			   >> rotate_arg >> a >> b >> c >> d;
		} else
			is >> rows_arg >> columns_arg;
		Init(rows_arg, columns_arg);
		SetLongTable(is_long_table_arg);
		SetRotateTable(rotate_arg);
		string tmp;
		for (i = 0; i < rows; ++i) {
			getline(is, tmp);
		}
		for (i = 0; i < columns; ++i) {
			getline(is, tmp);
		}
		for (i = 0; i < rows; ++i) {
			for (j = 0; j < columns; ++j) {
				getline(is, tmp);
			}
		}
		set_row_column_number_info();
		return;
	}
	is >> rows_arg >> columns_arg >> is_long_table_arg
	   >> rotate_arg >> a >> b >> c >> d;
	Init(rows_arg, columns_arg);
	SetLongTable(is_long_table_arg);
	SetRotateTable(rotate_arg);
	endhead = a;
	endfirsthead = b;
	endfoot = c;
	endlastfoot = d;
	for (i = 0; i < rows; ++i) {
		a = b = c = d = e = f = g = h = 0;
		is >> a >> b >> c >> d;
		row_info[i].top_line = a;
		row_info[i].bottom_line = b;
		row_info[i].is_cont_row = c;
		row_info[i].newpage = d;
	}
	for (i = 0; i < columns; ++i) {
		string s1;
		string s2;
		is >> a >> b >> c;
		char ch; // skip '"'
		is >> ch;
		getline(is, s1, '"');
		is >> ch; // skip '"'
		getline(is, s2, '"');
		column_info[i].alignment = static_cast<char>(a);
		column_info[i].left_line = b;
		column_info[i].right_line = c;
		column_info[i].p_width = s1;
		column_info[i].align_special = s2;
	}
	for (i = 0; i < rows; ++i) {
		for (j = 0; j < columns; ++j) {
			string s1;
			string s2;
			is >> a >> b >> c >> d >> e >> f >> g;
			char ch;
			is >> ch; // skip '"'
			getline(is, s1, '"');
			is >> ch; // skip '"'
			getline(is, s2, '"');
			cell_info[i][j].multicolumn = static_cast<char>(a);
			cell_info[i][j].alignment = static_cast<char>(b);
			cell_info[i][j].top_line = static_cast<char>(c);
			cell_info[i][j].bottom_line = static_cast<char>(d);
			cell_info[i][j].has_cont_row = static_cast<bool>(e);
			cell_info[i][j].rotate = static_cast<bool>(f);
			cell_info[i][j].linebreaks = static_cast<bool>(g);
			cell_info[i][j].align_special = s1;
			cell_info[i][j].p_width = s2;
		}
	}
	set_row_column_number_info();
}


// cell <0 will tex the preamble
// returns the number of printed newlines
int LyXTable::TexEndOfCell(ostream & os, int cell)
{
    int i;
    int ret = 0;
    int tmp; // tmp2;
    int fcell, nvcell;
    if (ShouldBeVeryLastCell(cell)) {
        // the very end at the very beginning
        if (Linebreaks(cell))
		os << "\\smallskip{}}";
        if (IsMultiColumn(cell))
		os << '}';
        if (RotateCell(cell)) {
		os << "\n\\end{sideways}";
            ++ret;
        }
        os << "\\\\\n";
        ++ret;
    
        tmp = 0;
        fcell = cell; 
        while (!IsFirstCell(fcell)) --fcell;
        for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
            if (BottomLine(fcell + i))
                ++tmp;
        }
        if (tmp == NumberOfCellsInRow(fcell)) {
		os << "\\hline ";
        } else {
            tmp = 0;
            for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                if (BottomLine(fcell + i)) {
			os << "\\cline{"
			   << column_of_cell(fcell + i) + 1
			   << '-'
			   << right_column_of_cell(fcell + i) + 1
			   << "} ";
                    tmp = 1;
                }
            }
        }
        if (tmp){
		os << '\n';
            ++ret;
        }
        if (is_long_table)
		os << "\\end{longtable}";
        else
		os << "\\end{tabular}";
        if (rotate) {
		os << "\n\\end{sideways}";
            ++ret;
        }
    } else {
        nvcell = NextVirtualCell(cell + 1);
        if (cell < 0){
            // preamble
            if (rotate) {
		    os << "\\begin{sideways}\n";
                ++ret;
            }
            if (is_long_table)
		    os << "\\begin{longtable}{";
            else
		    os << "\\begin{tabular}{";
            for (i = 0; i < columns; ++i) {
                if (column_info[i].left_line)
			os << '|';
                if (!column_info[i].align_special.empty()) {
			os << column_info[i].align_special;
                } else if (!column_info[i].p_width.empty()) {
			os << "p{"
			   << column_info[i].p_width
			   << '}';
                } else {
                    switch (column_info[i].alignment) {
                      case LYX_ALIGN_LEFT:
			      os << 'l';
                          break;
                      case LYX_ALIGN_RIGHT:
			      os << 'r';
                          break;
                      default:
			      os << 'c';
                          break;
                    }
                }
                if (column_info[i].right_line)
			os << '|';
            }
            os << "}\n";
            ++ret;
            tmp = 0;
            if (GetNumberOfCells()) {
                fcell = 0;
                for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                    if (TopLine(fcell + i))
                        ++tmp;
                }
                if (tmp == NumberOfCellsInRow(fcell)){
			os << "\\hline ";
                } else {
                    tmp = 0;
                    for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                        if (TopLine(fcell + i)) {
				os << "\\cline{"
				   << column_of_cell(fcell + i) + 1
				   << '-'
				   << right_column_of_cell(fcell + i) + 1
				   << "} ";
				tmp = 1;
                        }
                    }
                }
                if (tmp){
			os << '\n';
                    ++ret;
                }
            }
            if (RotateCell(0)) {
		    os << "\\begin{sideways}\n";
                ++ret;
            }
        } else {
            // usual cells
            if (Linebreaks(cell))
		    os << "\\smallskip{}}";
            if (IsMultiColumn(cell)){
		    os << '}';
            }
            if (RotateCell(cell)) {
		    os << "\n\\end{sideways}";
                ++ret;
            }
            if (IsLastCell(cell)) {
                int row = row_of_cell(cell);
                string hline1, hline2;
                bool print_hline = true;
                bool flag1 = IsLongTable() &&
                    ((row == endhead) || (row == endfirsthead) ||
                     (row == endfoot) || (row == endlastfoot));
                ++row;
                bool flag2 = IsLongTable() &&
                    ((row <= endhead) || (row <= endfirsthead) ||
                     (row <= endfoot) || (row <= endlastfoot));
                --row;
                // print the bottom hline only if (otherwise it is doubled):
                // - is no LongTable
                // - there IS a first-header
                // - the next row is no special header/footer
                //   & this row is no special header/footer
                // - the next row is a special header/footer
                //   & this row is a special header/footer
                bool pr_top_hline = (flag1 && flag2) || (!flag1 && !flag2) ||
                    (endfirsthead == endhead);
                os << "\\\\\n";
                ++ret;
                tmp = 0;
                fcell = cell;
                while (!IsFirstCell(fcell))
                    --fcell;
                for (i = 0; i < NumberOfCellsInRow(cell); ++i) {
                    if (BottomLine(fcell + i))
                        ++tmp;
                }
                if (tmp == NumberOfCellsInRow(cell)){
			os << "\\hline ";
                    hline1 = "\\hline ";
                } else {
                    tmp = 0;
                    for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                        if (BottomLine(fcell + i)){
				os << "\\cline{"
				   << column_of_cell(fcell + i) + 1
				   << '-'
				   << right_column_of_cell(fcell + i) + 1
				   << "} ";
                            hline1 += "\\cline{";
                            hline1 += tostr(column_of_cell(fcell + i) + 1);
                            hline1 += '-';
                            hline1 += tostr(right_column_of_cell(fcell + i) + 1);
                            hline1 += "} ";
                            tmp = 1;
                        }
                    }
                }
                if (tmp){
			os << '\n';
                    ++ret;
                }
                if (IsLongTable() && (row == endfoot)) {
			os << "\\endfoot\n";
                    ++ret;
                    print_hline = false; // no double line below footer
                }
                if (IsLongTable() && (row == endlastfoot)) {
			os << "\\endlastfoot\n";
                    ++ret;
                    print_hline = false; // no double line below footer
                }
                if (IsLongTable() && row_info[row].newpage) {
			os << "\\newpage\n";
                    ++ret;
                    print_hline = false; // no line below a \\newpage-command
                }
                tmp = 0;
                if (nvcell < numberofcells
		    && (cell < GetNumberOfCells() - 1)
                    && !ShouldBeVeryLastCell(cell)) {
                    fcell = nvcell;
                    for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                        if (TopLine(fcell + i))
                            ++tmp;
                    }
                    if (tmp == NumberOfCellsInRow(fcell)) {
                        if (print_hline)
				os << "\\hline ";
                        hline2 = "\\hline ";
                    } else {
                        tmp = 0;
                        for (i = 0; i < NumberOfCellsInRow(fcell); ++i) {
                            if (TopLine(fcell + i)) {
                                if (print_hline) {
					os << "\\cline{"
					   << column_of_cell(fcell + i) + 1
					   << '-'
					   << right_column_of_cell(fcell + i) + 1
					   << "} ";
				}
                                hline2 += "\\cline{";
                                hline2 += tostr(column_of_cell(fcell+i)+1);
                                hline2 += '-';
                                hline2 += tostr(right_column_of_cell(fcell+i)+1);
                                hline2 += "} ";
                                tmp = 1;
                            }
                        }
                    }
                    if (tmp && print_hline){
			    os << '\n';
                        ++ret;
                    }
                }
                // the order here is important as if one defines two
                // or more things in one line only the first entry is
                // displayed the other are set to an empty-row. This
                // is important if I have a footer and want that the
                // lastfooter is NOT displayed!!!
                bool sflag2 = (row == endhead) || (row == endfirsthead) ||
                    (row == endfoot) || (row == endlastfoot);
                --row;
//                sflag2 = IsLongTable() && (row >= 0) &&
//                    (sflag2 || (row == endhead) || (row == endfirsthead));
                row += 2;
                bool sflag1 = IsLongTable() && (row != endhead) &&
                    (row != endfirsthead) &&
                    ((row == endfoot) || (row == endlastfoot));
                --row;
                if (IsLongTable() && (row == endhead)) {
			os << "\\endhead\n";
                    ++ret;
                }
                if (IsLongTable() && (row == endfirsthead)) {
			os << "\\endfirsthead\n";
                    ++ret;
                }
                if (sflag1) { // add the \hline for next foot row
                    if (!hline1.empty()) {
			    os << hline1 + '\n';
                        ++ret;
                    }
                }
                // add the \hline for the first row
                if (pr_top_hline && sflag2) {
                    if (!hline2.empty()) {
			    os << hline2 + '\n';
                        ++ret;
                    }
                }
                if (nvcell < numberofcells && RotateCell(nvcell)) {
			os << "\\begin{sideways}\n";
                    ++ret;
                }
            } else {
		    os << "&\n";
                ++ret;
                if (nvcell < numberofcells && RotateCell(nvcell)) {
			os << "\\begin{sideways}\n";
                    ++ret;
                }
            }
        }
        if (nvcell < numberofcells && IsMultiColumn(nvcell)) {
		os << "\\multicolumn{"
		   << cells_in_multicolumn(nvcell)
		   << "}{";
            if (!cellinfo_of_cell(cell+1)->align_special.empty()) {
		    os << cellinfo_of_cell(cell+1)->align_special
		       << "}{";
            } else {
                if (LeftLine(nvcell))
			os << '|';
                if (!GetPWidth(nvcell).empty()) {
			os << "p{"
			   << GetPWidth(nvcell)
			   << '}';
                } else {
                    switch (GetAlignment(nvcell)) {
		    case LYX_ALIGN_LEFT: os << 'l'; break;
		    case LYX_ALIGN_RIGHT: os << 'r'; break;
		    default:  os << 'c'; break;
                    }
                }
                if (RightLine(nvcell))
			os << '|';
                //if (column_of_cell(cell+2)!= 0 && LeftLine(cell+2))
                if (((nvcell + 1) < numberofcells) &&
                    (NextVirtualCell(nvcell+1) < numberofcells) &&
                    (column_of_cell(NextVirtualCell(nvcell+1))!= 0) &&
                    LeftLine(NextVirtualCell(nvcell+1)))
			os << '|';
		
		os << "}{";
            }
        }
        if (nvcell < numberofcells && Linebreaks(nvcell)) {
		os << "\\parbox[t]{"
		   << GetPWidth(nvcell)
		   << "}{\\smallskip{}";
	}
    }
    return ret;
}


#if 0
// cell <0 will tex the preamble
// returns the number of printed newlines
int LyXTable::RoffEndOfCell(ostream & os, int cell)
{
    int ret = 0;

    if (cell == GetNumberOfCells() - 1){
        // the very end at the very beginning
        if (CellHasContRow(cell) >= 0) {
		os << "\nT}";
            ++ret;
        }
        os << "\n";
        ++ret;
        if (row_info[row_of_cell(cell)].bottom_line) {
		os << "_\n";
            ++ret;
        }
        os << ".TE\n.pl 1c";
    } else {  
        if (cell < 0) {
            int fcell = 0;
            // preamble
            os << "\n.pl 500c\n.TS\n";
            for (int j = 0; j < rows; ++j) {
                for (int i = 0; i < columns; ++i, ++fcell) {
                    if (column_info[i].left_line)
			    os << " | ";
                    if (cell_info[j][i].multicolumn == CELL_PART_OF_MULTICOLUMN)
			    os << "s";
                    else {
                        switch (column_info[i].alignment) {
                          case LYX_ALIGN_LEFT:
				  os << "l";
                              break;
                          case LYX_ALIGN_RIGHT:
				  os << "r";
                              break;
                          default:
				  os << "c";
                              break;
                        }
                    }
                    if (!column_info[i].p_width.empty())
			    os << "w(" << column_info[i].p_width << ")";
                    if (column_info[i].right_line)
			    os << " | ";
                }
                if ((j + 1) < rows) {
			os << "\n";
                    ++ret;
                }
            }
            os << ".\n";
            ++ret;
            if (row_info[0].top_line) {
		    os << "_\n";
                ++ret;
            }
            if (CellHasContRow(0) >= 0) {
		    os << "T{\n";
                ++ret;
            }
        } else {
            // usual cells
            if (CellHasContRow(cell) >= 0) {
		    os << "\nT}";
                ++ret;
            }
            if (right_column_of_cell(cell) == columns -1){
		    os << "\n";
                ++ret;
                int row = row_of_cell(cell);
                if (row_info[row++].bottom_line) {
			os << "_\n";
                    ++ret;
                }
                if ((row < rows) && row_info[row].top_line) {
			os << "_\n";
                    ++ret;
                }
            } else
		    os << "\t";
            if ((cell < GetNumberOfCells() - 1) &&
                (CellHasContRow(cell+1) >= 0)) {
		    os << "T{\n";
                ++ret;
            }
        }
    }
    return ret;
}
#endif


char const *LyXTable::getDocBookAlign(int cell, bool isColumn)
{
    int i;
    if (isColumn)
       i = cell;
    else
       i = column_of_cell(cell);
    if (!isColumn && IsMultiColumn(cell)) {
       if (!cellinfo_of_cell(cell)->align_special.empty()) {
           return cellinfo_of_cell(cell)->align_special.c_str();
       } else {
           switch (GetAlignment(cell)) {
           case LYX_ALIGN_LEFT:
               return "left";
           case LYX_ALIGN_RIGHT:
               return "right";
           default:
               return "center";
           }
       }
    } else {
       if (!column_info[i].align_special.empty()) {
           return column_info[i].align_special.c_str();
       }
#ifdef IGNORE_THIS_FOR_NOW
       else if (!column_info[i].p_width.empty()) {
           file += "p{";
           file += column_info[i].p_width;
           file += '}';
       }
#endif
       else {
           switch (column_info[i].alignment) {
           case LYX_ALIGN_LEFT:
               return "left";
           case LYX_ALIGN_RIGHT:
               return "right";
           default:
               return "center";
           }
       }
    }
}


// cell <0 will tex the preamble
// returns the number of printed newlines
int LyXTable::DocBookEndOfCell(ostream & os, int cell, int & depth)
{
    int i;
    int ret = 0;
    //int tmp; // tmp2; //<2F>unused
    int nvcell; // fcell; //<2F>unused
    if (ShouldBeVeryLastCell(cell)) {
	    os << newlineAndDepth(--depth)
	       << "</ENTRY>"
	       << newlineAndDepth(--depth)
	       << "</ROW>"
	       << newlineAndDepth(--depth)
	       << "</TBODY>"
	       << newlineAndDepth(--depth);
        if (is_long_table)
		os << "</TGROUP>";
        else
		os << "</TGROUP>"
		   << newlineAndDepth(--depth);
        ret += 4;
    } else {
        nvcell = NextVirtualCell(cell + 1);
        if (cell < 0) {
            // preamble
            if (is_long_table)
		    os << "<TGROUP ";
            else
		    os << "<TGROUP ";
            os << "COLS='"
	       << columns
	       << "' COLSEP='1' ROWSEP='1'>"
	       << newlineAndDepth(++depth);
            ++ret;
            for (i = 0; i < columns; ++i) {
		    os << "<COLSPEC ALIGN='"
		       << getDocBookAlign(i, true)
		       << "' COLNAME='col"
		       << i + 1
		       << "' COLNUM='"
		       << i + 1
		       << "' COLSEP='";
               if (i == (columns-1)) {
		       os << '1';
               } else {
                   if (column_info[i].right_line ||
                       column_info[i+1].left_line)
			   os << '1';
                   else
			   os << '0';
               }
               os << "'>"
		  << newlineAndDepth(depth);
                ++ret;
#ifdef NOT_HANDLED_YET_AS_I_DONT_KNOW_HOW
                if (column_info[i].left_line)
			os << '|';
#endif
            }
            os << "<TBODY>"
	       << newlineAndDepth(++depth)
	       << "<ROW>"
	       << newlineAndDepth(++depth)
	       << "<ENTRY ALIGN='"
	       << getDocBookAlign(0)
	       << "'";
           if (IsMultiColumn(0)) {
		   os << " NAMEST='col1' NAMEEND='col"
		      << cells_in_multicolumn(0)
		      << "'";
           }
	   os << ">"
	      << newlineAndDepth(++depth);
            ret += 3;
        } else {
            if (IsLastCell(cell)) {
		    os << newlineAndDepth(--depth)
		       << "</ENTRY>"
		       << newlineAndDepth(--depth)
		       << "</ROW>"
		       << newlineAndDepth(depth)
		       << "<ROW>"
		       << newlineAndDepth(++depth)
		       << "<ENTRY ALIGN='"
		       << getDocBookAlign(cell + 1)
		       << "' VALIGN='middle'";
               if (IsMultiColumn(cell + 1)) {
		       os << " NAMEST='col"
			  << column_of_cell(cell+1) + 1
			  << "' NAMEEND='col"
			  << column_of_cell(cell + 1) +
			       cells_in_multicolumn(cell + 1)
			  << "'";
               }
               os << ">"
		  << newlineAndDepth(++depth);
                ret += 4;
            } else {
		    os << newlineAndDepth(--depth)
		       << "</ENTRY>"
		       << newlineAndDepth(depth)
		       << "<ENTRY ALIGN='"
		       << getDocBookAlign(cell + 1)
		       << "' VALIGN='middle'";
               if (IsMultiColumn(cell + 1)) {
		       os << " NAMEST='col"
			  << column_of_cell(cell+1) + 1
			  << "' NAMEEND='col"
			  << column_of_cell(cell+1) +
			       cells_in_multicolumn(cell+1)
			  << "'";
               }
               os << ">"
		  << newlineAndDepth(++depth);
                ret += 3;
            }
        }
    }
    return ret;
}


bool LyXTable::IsMultiColumn(int cell)
{
    int fvcell = FirstVirtualCell(cell);

    return (cellinfo_of_cell(fvcell)->multicolumn != LyXTable::CELL_NORMAL);
}


LyXTable::cellstruct* LyXTable::cellinfo_of_cell(int cell)
{
    int row = row_of_cell(cell);
    int column = column_of_cell(cell);
    return  &cell_info[row][column];
}
   

void LyXTable::SetMultiColumn(int cell, int number)
{
    int fvcell = FirstVirtualCell(cell);
    int new_width = cellinfo_of_cell(fvcell)->width_of_cell;
    
    cellinfo_of_cell(fvcell)->multicolumn = LyXTable::CELL_BEGIN_OF_MULTICOLUMN;
    cellinfo_of_cell(fvcell)->alignment = column_info[column_of_cell(fvcell)].alignment;
    cellinfo_of_cell(fvcell)->top_line = row_info[row_of_cell(fvcell)].top_line;
    cellinfo_of_cell(fvcell)->bottom_line = row_info[row_of_cell(fvcell)].bottom_line;
    for (number--; number > 0; --number) {
        cellinfo_of_cell(fvcell+number)->multicolumn = 
            LyXTable::CELL_PART_OF_MULTICOLUMN;
        new_width += cellinfo_of_cell(fvcell+number)->width_of_cell;
    }
    set_row_column_number_info();
    SetWidthOfCell(fvcell, new_width);
}


int LyXTable::cells_in_multicolumn(int cell)
{
    int row = row_of_cell(cell);
    int column = column_of_cell(cell);
    int result = 1;
    ++column;
    while (column < columns && cell_info[row][column].multicolumn
           == LyXTable::CELL_PART_OF_MULTICOLUMN){
        ++result;
        ++column;
    }
    return result;
}


int  LyXTable::UnsetMultiColumn(int cell)
{
    int fvcell = FirstVirtualCell(cell);
    int row = row_of_cell(fvcell);
    int column = column_of_cell(fvcell);
    
    int result = 0;
    
    if (cell_info[row][column].multicolumn
        == LyXTable::CELL_BEGIN_OF_MULTICOLUMN){
        cell_info[row][column].multicolumn = LyXTable::CELL_NORMAL;
        ++column;
        while (column < columns &&
               cell_info[row][column].multicolumn
               == LyXTable::CELL_PART_OF_MULTICOLUMN){
            cell_info[row][column].multicolumn = 
                LyXTable::CELL_NORMAL;
            ++column;
            ++result;
        }
    }
    set_row_column_number_info();
    return result;
}


void LyXTable::delete_column(int column)
{
    int i, j;
    columnstruct * column_info2 = new columnstruct[columns-1];
   
    for (i = 0; i < column; ++i) {
        column_info2[i] = column_info[i];
    }
    for (i = column; i < columns - 1; ++i) {
        column_info2[i] = column_info[i + 1];
    }
   
    delete[] column_info;
    column_info = column_info2;

    for (i = 0; i < rows; ++i) {
        cellstruct * tmp = cell_info[i];
        cell_info[i] = new cellstruct[columns - 1];
        for (j = 0; j < column; ++j) {
            cell_info[i][j] = tmp[j];
        }
        for (j = column; j < columns - 1; ++j) {
            cell_info[i][j] = tmp[j + 1];
        }
        delete[] tmp;
    }

    --columns;
    Reinit();
}


void LyXTable::SetLongTable(int what)
{
    is_long_table = what;
}


bool LyXTable::IsLongTable()
{
    return is_long_table;
}

void LyXTable::SetRotateTable(int what)
{
    rotate = what;
}

bool LyXTable::RotateTable()
{
    return rotate;
}

void LyXTable::SetRotateCell(int cell, int what)
{
    cellinfo_of_cell(cell)->rotate = what;
}

bool LyXTable::RotateCell(int cell)
{
    return cellinfo_of_cell(cell)->rotate;
}

bool LyXTable::NeedRotating()
{
    if (rotate)
        return true;
    for (int i = 0; i < rows; ++i) {
        for (int j = 0; j < columns; ++j) {
            if (cell_info[i][j].rotate)
                return true;
        }
    }
    return false;
}

void LyXTable::AppendContRow(int cell)
{
    int row = row_of_cell(cell)+1;

    if (!RowHasContRow(cell) || (CellHasContRow(cell)>= 0))
        AppendRow(cell);
    row_info[row].is_cont_row = true;
    row_info[row].top_line = false;
    cell_info[row-1][column_of_cell(cell)].has_cont_row = true;
    Reinit();
}

bool LyXTable::IsContRow(int cell)
{
    return row_info[row_of_cell(cell)].is_cont_row;
}

int LyXTable::CellHasContRow(int cell)
{
    int row = row_of_cell(cell);

    if (VeryLastRow(cell))
        return -1;
    if (cell_info[row][column_of_cell(cell)].has_cont_row)
        return cell_info[row+1][column_of_cell(cell)].cellno;
    return -1;
}

bool LyXTable::RowHasContRow(int cell)
{
    int row = row_of_cell(cell) + 1;

    if (row < rows)
        return row_info[row].is_cont_row;
    return false;
}

int LyXTable::FirstVirtualCell(int cell)
{
    if (!IsContRow(cell))
        return cell;
    int row = row_of_cell(cell);
    int column = column_of_cell(cell);
    for(; (row > 0) && IsContRow(cell_info[row][column].cellno); --row)
        ;
    return cell_info[row][column].cellno;
}


int LyXTable::NextVirtualCell(int cell)
{
    if (!IsContRow(cell))
        return cell;
    int row = row_of_cell(cell);
    for(;(row < rows - 1) && IsContRow(cell_info[row][0].cellno); ++row)
	;
    // what if(row >= rows) ?
    return cell_info[row][0].cellno;
}


bool LyXTable::ShouldBeVeryLastCell(int cell)
// "very last cell" ..of what? the row? the table?
// "Cell" in this context appears to not count `virtual' cells
{
    int fcell = cell + 1;

    if (cell == GetNumberOfCells() - 1)
        return true; // not really sure if I should return false here
    if (!IsContRow(fcell))
        return false;
    while((fcell < GetNumberOfCells() - 1) && IsContRow(fcell))
        ++fcell;
    if (fcell < GetNumberOfCells() - 1)
        return false;
    return true;
}

bool LyXTable::ShouldBeVeryLastRow(int cell)
{
    if (CellHasContRow(cell)>= 0)
        return false;
    int row = row_of_cell(cell) + 1;
    int column = column_of_cell(cell);
    while((row < rows) && IsContRow(cell_info[row][column].cellno))
        ++row;
    if (row < rows)
        return false; // found another valid row
    // I do not have any valid row after the actual
    return true;
}

int LyXTable::GetCellAbove(int cell)
{
    int row = row_of_cell(cell);
    
    if (row > 0)
        return cell_info[row-1][column_of_cell(cell)].cellno;
    return cell;
}

int LyXTable::GetCellNumber(int column, int row)
{
    if (column >= columns)
        column = columns - 1;
    else if (column < 0)
        column = 0;
    if (row >= rows)
        row = rows - 1;
    else if (row < 0)
        row = 0;
    
    return cell_info[row][column].cellno;
}

void LyXTable::SetLinebreaks(int cell, bool what)
{
    cellinfo_of_cell(FirstVirtualCell(cell))->linebreaks = what;
}

bool LyXTable::Linebreaks(int cell)
{
    int fvcell = FirstVirtualCell(cell);

    if (column_info[column_of_cell(fvcell)].p_width.empty() &&
        !(IsMultiColumn(fvcell) && !cellinfo_of_cell(fvcell)->p_width.empty()))
        return false;
    return cellinfo_of_cell(fvcell)->linebreaks;
}

void LyXTable::SetLTHead(int cell, bool first)
{
    int row = row_of_cell(cell);

    if (first) {
        if (row == endfirsthead)
            endfirsthead = -1;
        else
            endfirsthead = row;
    } else {
        if (row == endhead)
            endhead = -1;
        else
            endhead = row;
    }
}

bool LyXTable::RowOfLTHead(int cell)
{
    if ((endhead+1) > rows)
        endhead = -1;
    return (row_of_cell(cell) == endhead);
}

bool LyXTable::RowOfLTFirstHead(int cell)
{
    if ((endfirsthead+1) > rows)
        endfirsthead = -1;
    return (row_of_cell(cell) == endfirsthead);
}

void LyXTable::SetLTFoot(int cell, bool last)
{
    int row = row_of_cell(cell);

    if (last) {
        if (row == endlastfoot)
            endlastfoot = -1;
        else
            endlastfoot = row;
    } else {
        if (row == endfoot)
            endfoot = -1;
        else
            endfoot = row;
    }
}

bool LyXTable::RowOfLTFoot(int cell)
{
    if ((endfoot+1) > rows) {
        endfoot = -1;
        return false;
    }
    return (row_of_cell(cell) == endfoot);
}

bool LyXTable::RowOfLTLastFoot(int cell)
{
    if ((endlastfoot+1) > rows)
        endlastfoot = -1;
    return (row_of_cell(cell) == endlastfoot);
}

void LyXTable::SetLTNewPage(int cell, bool what)
{
    row_info[row_of_cell(cell)].newpage = what;
}

bool LyXTable::LTNewPage(int cell)
{
    return row_info[row_of_cell(cell)].newpage;
}

void LyXTable::SetAscentOfRow(int row, int height)
{
    if (row >= rows)
        return;
    row_info[row].ascent_of_row = height;
}

void LyXTable::SetDescentOfRow(int row, int height)
{
    if (row >= rows)
        return;
    row_info[row].descent_of_row = height;
}

int LyXTable::AscentOfRow(int row)
{
    if (row >= rows)
        return 0;
    return row_info[row].ascent_of_row;
}

int LyXTable::DescentOfRow(int row)
{
    if (row >= rows)
        return 0;
    return row_info[row].descent_of_row;
}

int LyXTable::HeightOfTable()
{
    int
        height,
        row;

    for(row=0,height=0;(row<rows); ++row)
        height += AscentOfRow(row) + DescentOfRow(row) +
	    AdditionalHeight(GetCellNumber(0,row));
    return height;
}

bool LyXTable::IsPartOfMultiColumn(int row, int column)
{
    if ((row >= rows) || (column >= columns))
        return false;
    return (cell_info[row][column].multicolumn==CELL_PART_OF_MULTICOLUMN);
}

int LyXTable::Latex(ostream &)
{
    return 0;
}

InsetText * LyXTable::GetCellInset(int cell) const
{
    return cell_info[row_of_cell(cell)][column_of_cell(cell)].inset;
}