<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 *
 * @package phpMyAdmin
 */

include_once("Export_Relation_Schema.class.php");

/**
 * Font used in PDF.
 *
 * @todo Make this configuratble (at least Sans/Serif).
 */
define('PMA_PDF_FONT', 'DejaVuSans');
require_once './libraries/tcpdf/tcpdf.php';

/**
 * Extends the "TCPDF" class and helps
 * in developing the structure of PDF Schema Export
 *
 * @name PMA_PDF
 * @copyright
 * @license
 * @access public
 * @see TCPDF
 */
class PMA_PDF extends TCPDF
{
    /**
     * Defines properties
     */
    var $_xMin;
    var $_yMin;
    var $leftMargin = 10;
    var $topMargin = 10;
    var $scale;
    var $PMA_links;
    var $Outlines = array();
    var $def_outlines;
    var $Alias = array();
    var $widths;
    private $_ff = PMA_PDF_FONT;

    public function getH()
    {
        return $this->h;
    }

    public function getW()
    {
        return $this->w;
    }

    public function setCMargin($c_margin)
    {
        $this->cMargin = $c_margin;
    }

    function SetAlias($name, $value)
    {
        $this->Alias[$name] = $value ;
    }

    function _putpages()
    {
        if (count($this->Alias) > 0) {
            $nb = $this->page;
            foreach ($this->Alias as $alias => $value) {
                for ($n = 1;$n <= $nb;$n++)
                    $this->pages[$n]=str_replace($alias, $value, $this->pages[$n]);
            }
        }
        parent::_putpages();
    }

    // added because tcpdf for PHP 5 has a protected $buffer
    public function getBuffer()
    {
        return $this->buffer;
    }

    public function getState()
    {
        return $this->state;
    }

    /**
     * Sets the scaling factor, defines minimum coordinates and margins
     *
     * @param float scale The scaling factor
     * @param float _xMin The minimum X coordinate
     * @param float _yMin The minimum Y coordinate
     * @param float leftMargin The left margin
     * @param float topMargin The top margin
     * @access public
     */
    function PMA_PDF_setScale($scale = 1, $xMin = 0, $yMin = 0, $leftMargin = -1, $topMargin = -1)
    {
        $this->scale = $scale;
        $this->_xMin = $xMin;
        $this->_yMin = $yMin;
        if ($this->leftMargin != -1) {
            $this->leftMargin = $leftMargin;
        }
        if ($this->topMargin != -1) {
            $this->topMargin = $topMargin;
        }
    }

    /**
     * Outputs a scaled cell
     *
     * @param float w The cell width
     * @param float h The cell height
     * @param string txt The text to output
     * @param mixed border Whether to add borders or not
     * @param integer ln Where to put the cursor once the output is done
     * @param string align Align mode
     * @param integer fill Whether to fill the cell with a color or not
     * @access public
     * @see TCPDF::Cell()
     */
    function PMA_PDF_cellScale($w, $h = 0, $txt = '', $border = 0, $ln = 0, $align = '', $fill = 0, $link = '')
    {
        $h = $h / $this->scale;
        $w = $w / $this->scale;
        $this->Cell($w, $h, $txt, $border, $ln, $align, $fill, $link);
    }

    /**
     * Draws a scaled line
     *
     * @param float x1 The horizontal position of the starting point
     * @param float y1 The vertical position of the starting point
     * @param float x2 The horizontal position of the ending point
     * @param float y2 The vertical position of the ending point
     * @access public
     * @see TCPDF::Line()
     */
    function PMA_PDF_lineScale($x1, $y1, $x2, $y2)
    {
        $x1 = ($x1 - $this->_xMin) / $this->scale + $this->leftMargin;
        $y1 = ($y1 - $this->_yMin) / $this->scale + $this->topMargin;
        $x2 = ($x2 - $this->_xMin) / $this->scale + $this->leftMargin;
        $y2 = ($y2 - $this->_yMin) / $this->scale + $this->topMargin;
        $this->Line($x1, $y1, $x2, $y2);
    }

    /**
     * Sets x and y scaled positions
     *
     * @param float x The x position
     * @param float y The y position
     * @access public
     * @see TCPDF::SetXY()
     */
    function PMA_PDF_setXyScale($x, $y)
    {
        $x = ($x - $this->_xMin) / $this->scale + $this->leftMargin;
        $y = ($y - $this->_yMin) / $this->scale + $this->topMargin;
        $this->SetXY($x, $y);
    }

    /**
     * Sets the X scaled positions
     *
     * @param float x The x position
     * @access public
     * @see TCPDF::SetX()
     */
    function PMA_PDF_setXScale($x)
    {
        $x = ($x - $this->_xMin) / $this->scale + $this->leftMargin;
        $this->SetX($x);
    }

    /**
     * Sets the scaled font size
     *
     * @param float size The font size (in points)
     * @access public
     * @see TCPDF::SetFontSize()
     */
    function PMA_PDF_setFontSizeScale($size)
    {
        // Set font size in points
        $size = $size / $this->scale;
        $this->SetFontSize($size);
    }

    /**
     * Sets the scaled line width
     *
     * @param float width The line width
     * @access public
     * @see TCPDF::SetLineWidth()
     */
    function PMA_PDF_setLineWidthScale($width)
    {
        $width = $width / $this->scale;
        $this->SetLineWidth($width);
    }

    /**
     * Displays an error message
     *
     * @param string error_message the error mesage
     * @access public
     * @see PMA_Export_Relation_Schema::dieSchema
     */
    function Error($error_message = '')
    {
       PMA_Export_Relation_Schema::dieSchema($error_message);
    }

    function Header()
    {
        // We only show this if we find something in the new pdf_pages table

        // This function must be named "Header" to work with the TCPDF library
        global $cfgRelation, $db, $pdf_page_number, $with_doc;
        if ($with_doc) {
            $test_query = 'SELECT * FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['pdf_pages'])
             . ' WHERE db_name = \'' . PMA_sqlAddslashes($db) . '\''
             . ' AND page_nr = \'' . $pdf_page_number . '\'';
            $test_rs = PMA_query_as_controluser($test_query);
            $pages = @PMA_DBI_fetch_assoc($test_rs);
            $this->SetFont($this->_ff, 'B', 14);
            $this->Cell(0, 6, ucfirst($pages['page_descr']), 'B', 1, 'C');
            $this->SetFont($this->_ff, '');
            $this->Ln();
        }
    }

    function Footer()
    {
        // This function must be named "Footer" to work with the TCPDF library
        global $with_doc;
        if ($with_doc) {
            $this->SetY(-15);
            $this->SetFont($this->_ff, '', 14);
            $this->Cell(0, 6, __('Page number:') . ' ' . $this->getAliasNumPage() . '/' .  $this->getAliasNbPages(), 'T', 0, 'C');
            $this->Cell(0, 6, PMA_localisedDate(), 0, 1, 'R');
            $this->SetY(20);
        }
    }

    function Bookmark($txt, $level = 0, $y = 0, $page = '')
    {
        // Add a bookmark
        $this->Outlines[0][] = $level;
        $this->Outlines[1][] = $txt;
        $this->Outlines[2][] = $this->page;
        if ($y == -1) {
            $y = $this->GetY();
        }
        $this->Outlines[3][] = round($this->hPt - $y * $this->k, 2);
    }

    function _putbookmarks()
    {
        if (count($this->Outlines) > 0) {
            // Save object number
            $memo_n = $this->n;
            // Take the number of sub elements for an outline
            $nb_outlines = sizeof($this->Outlines[0]);
            $first_level = array();
            $parent = array();
            $parent[0] = 1;
            for ($i = 0; $i < $nb_outlines; $i++) {
                $level = $this->Outlines[0][$i];
                $kids = 0;
                $last = -1;
                $prev = -1;
                $next = -1;
                if ($i > 0) {
                    $cursor = $i-1;
                    // Take the previous outline in the same level
                    while ($this->Outlines[0][$cursor] > $level && $cursor > 0)
                    $cursor--;
                    if ($this->Outlines[0][$cursor] == $level) {
                        $prev = $cursor;
                    }
                }
                if ($i < $nb_outlines-1) {
                    $cursor = $i + 1;
                    while (isset($this->Outlines[0][$cursor]) && $this->Outlines[0][$cursor] > $level) {
                        // Take the immediate kid in level + 1
                        if ($this->Outlines[0][$cursor] == $level + 1) {
                            $kids++;
                            $last = $cursor;
                        }
                        $cursor++;
                    }
                    $cursor = $i + 1;
                    // Take the next outline in the same level
                    while ($this->Outlines[0][$cursor] > $level && ($cursor + 1 < sizeof($this->Outlines[0])))
                    $cursor++;
                    if ($this->Outlines[0][$cursor] == $level) {
                        $next = $cursor;
                    }
                }
                $this->_newobj();
                $parent[$level + 1] = $this->n;
                if ($level == 0) {
                    $first_level[] = $this->n;
                }
                $this->_out('<<');
                $this->_out('/Title (' . $this->Outlines[1][$i] . ')');
                $this->_out('/Parent ' . $parent[$level] . ' 0 R');
                if ($prev != -1) {
                    $this->_out('/Prev ' . ($memo_n + $prev + 1) . ' 0 R');
                }
                if ($next != -1) {
                    $this->_out('/Next ' . ($this->n + $next - $i) . ' 0 R');
                }
                $this->_out('/Dest [' . (1 + (2 * $this->Outlines[2][$i])) . ' 0 R /XYZ null ' . $this->Outlines[3][$i] . ' null]');
                if ($kids > 0) {
                    $this->_out('/First ' . ($this->n + 1) . ' 0 R');
                    $this->_out('/Last ' . ($this->n + $last - $i) . ' 0 R');
                    $this->_out('/Count -' . $kids);
                }
                $this->_out('>>');
                $this->_out('endobj');
            }
            // First page of outlines
            $this->_newobj();
            $this->def_outlines = $this->n;
            $this->_out('<<');
            $this->_out('/Type');
            $this->_out('/Outlines');
            $this->_out('/First ' . $first_level[0] . ' 0 R');
            $this->_out('/Last ' . $first_level[sizeof($first_level)-1] . ' 0 R');
            $this->_out('/Count ' . sizeof($first_level));
            $this->_out('>>');
            $this->_out('endobj');
        }
    }

    function _putresources()
    {
        parent::_putresources();
        $this->_putbookmarks();
    }

    function SetWidths($w)
    {
        // column widths
        $this->widths = $w;
    }

    function Row($data, $links)
    {
        // line height
        $nb = 0;
        $data_cnt = count($data);
        for ($i = 0;$i < $data_cnt;$i++)
        $nb = max($nb, $this->NbLines($this->widths[$i], $data[$i]));
        $il = $this->FontSize;
        $h = ($il + 1) * $nb;
        // page break if necessary
        $this->CheckPageBreak($h);
        // draw the cells
        $data_cnt = count($data);
        for ($i = 0;$i < $data_cnt;$i++) {
            $w = $this->widths[$i];
            // save current position
            $x = $this->GetX();
            $y = $this->GetY();
            // draw the border
            $this->Rect($x, $y, $w, $h);
            if (isset($links[$i])) {
                $this->Link($x, $y, $w, $h, $links[$i]);
            }
            // print text
            $this->MultiCell($w, $il + 1, $data[$i], 0, 'L');
            // go to right side
            $this->SetXY($x + $w, $y);
        }
        // go to line
        $this->Ln($h);
    }

    function NbLines($w, $txt)
    {
        // compute number of lines used by a multicell of width w
        $cw = &$this->CurrentFont['cw'];
        if ($w == 0) {
            $w = $this->w - $this->rMargin - $this->x;
        }
        $wmax = ($w-2 * $this->cMargin) * 1000 / $this->FontSize;
        $s = str_replace("\r", '', $txt);
        $nb = strlen($s);
        if ($nb > 0 and $s[$nb-1] == "\n") {
            $nb--;
        }
        $sep = -1;
        $i = 0;
        $j = 0;
        $l = 0;
        $nl = 1;
        while ($i < $nb) {
            $c = $s[$i];
            if ($c == "\n") {
                $i++;
                $sep = -1;
                $j = $i;
                $l = 0;
                $nl++;
                continue;
            }
            if ($c == ' ') {
                $sep = $i;
            }
            $l += isset($cw[ord($c)])?$cw[ord($c)]:0 ;
            if ($l > $wmax) {
                if ($sep == -1) {
                    if ($i == $j) {
                        $i++;
                    }
                } else {
                    $i = $sep + 1;
                }
                $sep = -1;
                $j = $i;
                $l = 0;
                $nl++;
            } else {
                $i++;
            }
        }
        return $nl;
    }
}

/**
 * Table preferences/statistics
 *
 * This class preserves the table co-ordinates,fields
 * and helps in drawing/generating the Tables in PDF document.
 *
 * @name Table_Stats
 * @copyright
 * @license
 * @see PMA_PDF
 */
class Table_Stats
{
    /**
     * Defines properties
     */
    private $_tableName;
    private $_showInfo = false;

    public $nb_fiels;
    public $width = 0;
    public $height;
    public $fields = array();
    public $heightCell = 6;
    public $x, $y;
    public $primary = array();
    private $_ff = PMA_PDF_FONT;

    /**
     * The "Table_Stats" constructor
     *
     * @param string table_name The table name
     * @param integer fontSize The font size
     * @param integer pageNumber The current page number (from the
     *                     $cfg['Servers'][$i]['table_coords'] table)
     * @param integer sameWideWidth The max. with among tables
     * @param boolean showKeys Whether to display keys or not
     * @param boolean showInfo Whether to display table position or not
     * @global object    The current PDF document
     * @global array     The relations settings
     * @global string    The current db name
     * @see PMA_PDF, Table_Stats::Table_Stats_setWidth,
          Table_Stats::Table_Stats_setHeight
     */
    function __construct($tableName, $fontSize, $pageNumber, &$sameWideWidth, $showKeys = false, $showInfo = false)
    {
        global $pdf, $cfgRelation, $db;

        $this->_tableName = $tableName;
        $sql = 'DESCRIBE ' . PMA_backquote($tableName);
        $result = PMA_DBI_try_query($sql, null, PMA_DBI_QUERY_STORE);
        if (!$result || !PMA_DBI_num_rows($result)) {
            $pdf->Error(sprintf(__('The %s table doesn\'t exist!'), $tableName));
        }
        // load fields
        //check to see if it will load all fields or only the foreign keys
        if ($showKeys) {
            $indexes = PMA_Index::getFromTable($this->_tableName, $db);
            $all_columns = array();
            foreach ($indexes as $index) {
            $all_columns = array_merge($all_columns, array_flip(array_keys($index->getColumns())));
            }
            $this->fields = array_keys($all_columns);
        } else {
            while ($row = PMA_DBI_fetch_row($result)) {
                $this->fields[] = $row[0];
            }
        }

        $this->_showInfo = $showInfo;
        $this->_setHeight();
        /*
         * setWidth must me after setHeight, because title
         * can include table height which changes table width
         */
        $this->_setWidth($fontSize);
        if ($sameWideWidth < $this->width) {
            $sameWideWidth = $this->width;
        }
        $sql = 'SELECT x, y FROM '
             . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_coords'])
             . ' WHERE db_name = \'' . PMA_sqlAddslashes($db) . '\''
             . ' AND   table_name = \'' . PMA_sqlAddslashes($tableName) . '\''
             . ' AND   pdf_page_number = ' . $pageNumber;
        $result = PMA_query_as_controluser($sql, false, PMA_DBI_QUERY_STORE);
        if (!$result || !PMA_DBI_num_rows($result)) {
            $pdf->Error(sprintf(__('Please configure the coordinates for table %s'), $tableName));
        }
        list($this->x, $this->y) = PMA_DBI_fetch_row($result);
        $this->x = (double) $this->x;
        $this->y = (double) $this->y;
        /*
         * displayfield
         */
        $this->displayfield = PMA_getDisplayField($db, $tableName);
        /*
         * index
         */
        $result = PMA_DBI_query('SHOW INDEX FROM ' . PMA_backquote($tableName) . ';', null, PMA_DBI_QUERY_STORE);
        if (PMA_DBI_num_rows($result) > 0) {
            while ($row = PMA_DBI_fetch_assoc($result)) {
                if ($row['Key_name'] == 'PRIMARY') {
                    $this->primary[] = $row['Column_name'];
                }
            }
        }
    }

    /**
     * Returns title of the current table,
     * title can have the dimensions of the table
     *
     * @access private
     */
    private function _getTitle()
    {
        return ($this->_showInfo ? sprintf('%.0f', $this->width) . 'x' . sprintf('%.0f', $this->height) : '') . ' ' . $this->_tableName;
    }

    /**
     * Sets the width of the table
     *
     * @param integer fontSize The font size
     * @global object    The current PDF document
     * @access private
     * @see PMA_PDF
     */
    function _setWidth($fontSize)
    {
        global $pdf;

        foreach ($this->fields as $field) {
            $this->width = max($this->width, $pdf->GetStringWidth($field));
        }
        $this->width += $pdf->GetStringWidth('  ');
        $pdf->SetFont($this->_ff, 'B', $fontSize);
        /*
         * it is unknown what value must be added, because
         * table title is affected by the tabe width value
         */
        while ($this->width < $pdf->GetStringWidth($this->_getTitle())) {
            $this->width += 5;
        }
        $pdf->SetFont($this->_ff, '', $fontSize);
    }

    /**
     * Sets the height of the table
     *
     * @access private
     */
    private function _setHeight()
    {
        $this->height = (count($this->fields) + 1) * $this->heightCell;
    }

    /**
     * Do draw the table
     *
     * @param integer fontSize The font size
     * @param boolean setColor Whether to display color
     * @global object    The current PDF document
     * @access public
     * @see PMA_PDF
     */
    public function tableDraw($fontSize, $withDoc, $setColor = 0)
    {
        global $pdf, $withDoc;

        $pdf->PMA_PDF_setXyScale($this->x, $this->y);
        $pdf->SetFont($this->_ff, 'B', $fontSize);
        if ($setColor) {
            $pdf->SetTextColor(200);
            $pdf->SetFillColor(0, 0, 128);
        }
        if ($withDoc) {
            $pdf->SetLink($pdf->PMA_links['RT'][$this->_tableName]['-'], -1);
        } else {
            $pdf->PMA_links['doc'][$this->_tableName]['-'] = '';
        }

        $pdf->PMA_PDF_cellScale($this->width, $this->heightCell, $this->_getTitle(), 1, 1, 'C', $setColor, $pdf->PMA_links['doc'][$this->_tableName]['-']);
        $pdf->PMA_PDF_setXScale($this->x);
        $pdf->SetFont($this->_ff, '', $fontSize);
        $pdf->SetTextColor(0);
        $pdf->SetFillColor(255);

        foreach ($this->fields as $field) {
            if ($setColor) {
                if (in_array($field, $this->primary)) {
                    $pdf->SetFillColor(215, 121, 123);
                }
                if ($field == $this->displayfield) {
                    $pdf->SetFillColor(142, 159, 224);
                }
            }
            if ($withDoc) {
                $pdf->SetLink($pdf->PMA_links['RT'][$this->_tableName][$field], -1);
            } else {
                $pdf->PMA_links['doc'][$this->_tableName][$field] = '';
            }

            $pdf->PMA_PDF_cellScale($this->width, $this->heightCell, ' ' . $field, 1, 1, 'L', $setColor, $pdf->PMA_links['doc'][$this->_tableName][$field]);
            $pdf->PMA_PDF_setXScale($this->x);
            $pdf->SetFillColor(255);
        }
        /*if ($pdf->PageNo() > 1) {
            $pdf->PMA_PDF_die(__('The scale factor is too small to fit the schema on one page'));
        } */
    }
}

/**
 * Relation preferences/statistics
 *
 * This class fetches the table master and foreign fields positions
 * and helps in generating the Table references and then connects
 * master table's master field to foreign table's foreign key
 * in PDF document.
 *
 * @name Relation_Stats
 * @copyright
 * @license
 * @see PMA_PDF::SetDrawColor,PMA_PDF::PMA_PDF_setLineWidthScale,PMA_PDF::PMA_PDF_lineScale
 */
class Relation_Stats
{
    /**
     * Defines properties
     */
    public $xSrc, $ySrc;
    public $srcDir;
    public $destDir;
    public $xDest, $yDest;
    public $wTick = 5;

    /**
     * The "Relation_Stats" constructor
     *
     * @param string master_table The master table name
     * @param string master_field The relation field in the master table
     * @param string foreign_table The foreign table name
     * @param string foreigh_field The relation field in the foreign table
     * @see Relation_Stats::_getXy
     */
    function __construct($master_table, $master_field, $foreign_table, $foreign_field)
    {
        $src_pos  = $this->_getXy($master_table, $master_field);
        $dest_pos = $this->_getXy($foreign_table, $foreign_field);
        /*
        * [0] is x-left
        * [1] is x-right
        * [2] is y
        */
        $src_left   = $src_pos[0] - $this->wTick;
        $src_right  = $src_pos[1] + $this->wTick;
        $dest_left  = $dest_pos[0] - $this->wTick;
        $dest_right = $dest_pos[1] + $this->wTick;

        $d1 = abs($src_left - $dest_left);
        $d2 = abs($src_right - $dest_left);
        $d3 = abs($src_left - $dest_right);
        $d4 = abs($src_right - $dest_right);
        $d  = min($d1, $d2, $d3, $d4);

        if ($d == $d1) {
            $this->xSrc    = $src_pos[0];
            $this->srcDir  = -1;
            $this->xDest   = $dest_pos[0];
            $this->destDir = -1;
        } elseif ($d == $d2) {
            $this->xSrc    = $src_pos[1];
            $this->srcDir  = 1;
            $this->xDest   = $dest_pos[0];
            $this->destDir = -1;
        } elseif ($d == $d3) {
            $this->xSrc    = $src_pos[0];
            $this->srcDir  = -1;
            $this->xDest   = $dest_pos[1];
            $this->destDir = 1;
        } else {
            $this->xSrc    = $src_pos[1];
            $this->srcDir  = 1;
            $this->xDest   = $dest_pos[1];
            $this->destDir = 1;
        }
        $this->ySrc   = $src_pos[2];
        $this->yDest = $dest_pos[2];
    }

    /**
     * Gets arrows coordinates
     *
     * @param string table The current table name
     * @param string column The relation column name
     * @return array Arrows coordinates
     * @access private
     */
    private function _getXy($table, $column)
    {
        $pos = array_search($column, $table->fields);
        // x_left, x_right, y
        return array($table->x, $table->x + + $table->width, $table->y + ($pos + 1.5) * $table->heightCell);
    }

    /**
     * draws relation links and arrows
     * shows foreign key relations
     *
     * @param boolean changeColor Whether to use one color per relation or not
     * @param integer i The id of the link to draw
     * @global object    The current PDF document
     * @access public
     * @see PMA_PDF
     */
    public function relationDraw($changeColor, $i)
    {
        global $pdf;

        if ($changeColor) {
            $d = $i % 6;
            $j = ($i - $d) / 6;
            $j = $j % 4;
            $j++;
            $case = array(
                array(1, 0, 0),
                array(0, 1, 0),
                array(0, 0, 1),
                array(1, 1, 0),
                array(1, 0, 1),
                array(0, 1, 1)
                );
            list ($a, $b, $c) = $case[$d];
            $e = (1 - ($j - 1) / 6);
            $pdf->SetDrawColor($a * 255 * $e, $b * 255 * $e, $c * 255 * $e);
        } else {
            $pdf->SetDrawColor(0);
        }
        $pdf->PMA_PDF_setLineWidthScale(0.2);
        $pdf->PMA_PDF_lineScale($this->xSrc, $this->ySrc, $this->xSrc + $this->srcDir * $this->wTick, $this->ySrc);
        $pdf->PMA_PDF_lineScale($this->xDest + $this->destDir * $this->wTick, $this->yDest, $this->xDest, $this->yDest);
        $pdf->PMA_PDF_setLineWidthScale(0.1);
        $pdf->PMA_PDF_lineScale($this->xSrc + $this->srcDir * $this->wTick, $this->ySrc, $this->xDest + $this->destDir * $this->wTick, $this->yDest);
        /*
         * Draws arrows ->
         */
        $root2 = 2 * sqrt(2);
        $pdf->PMA_PDF_lineScale($this->xSrc + $this->srcDir * $this->wTick * 0.75, $this->ySrc, $this->xSrc + $this->srcDir * (0.75 - 1 / $root2) * $this->wTick, $this->ySrc + $this->wTick / $root2);
        $pdf->PMA_PDF_lineScale($this->xSrc + $this->srcDir * $this->wTick * 0.75, $this->ySrc, $this->xSrc + $this->srcDir * (0.75 - 1 / $root2) * $this->wTick, $this->ySrc - $this->wTick / $root2);

        $pdf->PMA_PDF_lineScale($this->xDest + $this->destDir * $this->wTick / 2, $this->yDest, $this->xDest + $this->destDir * (0.5 + 1 / $root2) * $this->wTick, $this->yDest + $this->wTick / $root2);
        $pdf->PMA_PDF_lineScale($this->xDest + $this->destDir * $this->wTick / 2, $this->yDest, $this->xDest + $this->destDir * (0.5 + 1 / $root2) * $this->wTick, $this->yDest - $this->wTick / $root2);
        $pdf->SetDrawColor(0);
    }
}

/**
 * Pdf Relation Schema Class
 *
 * Purpose of this class is to generate the PDF Document. PDF is widely
 * used format for documenting text,fonts,images and 3d vector graphics.
 *
 * This class inherits Export_Relation_Schema class has common functionality added
 * to this class
 *
 * @name Pdf_Relation_Schema
 * @copyright
 * @license
 */
class PMA_Pdf_Relation_Schema extends PMA_Export_Relation_Schema
{
    /**
     * Defines properties
     */
    private $_tables = array();
    private $_relations = array();
    private $_ff = PMA_PDF_FONT;
    private $_xMax = 0;
    private $_yMax = 0;
    private $scale;
    private $_xMin = 100000;
    private $_yMin = 100000;
    private $topMargin = 10;
    private $bottomMargin = 10;
    private $leftMargin = 10;
    private $rightMargin = 10;
    private $_tablewidth;

    /**
     * The "PMA_Pdf_Relation_Schema" constructor
     *
     * @global object   The current PDF Schema document
     * @global string   The current db name
     * @global array    The relations settings
     * @access private
     * @see PMA_PDF
     */
    function __construct()
    {
        global $pdf,$db,$cfgRelation;

        $this->setPageNumber($_POST['pdf_page_number']);
        $this->setShowGrid(isset($_POST['show_grid']));
        $this->setShowColor(isset($_POST['show_color']));
        $this->setShowKeys(isset($_POST['show_keys']));
        $this->setTableDimension(isset($_POST['show_table_dimension']));
        $this->setAllTableSameWidth(isset($_POST['all_table_same_wide']));
        $this->setWithDataDictionary($_POST['with_doc']);
        $this->setOrientation($_POST['orientation']);
        $this->setPaper($_POST['paper']);
        $this->setExportType($_POST['export_type']);

         // Initializes a new document
        $pdf = new PMA_PDF($this->orientation, 'mm', $this->paper);
        $pdf->SetTitle(sprintf(__('Schema of the %s database - Page %s'), $GLOBALS['db'], $this->pageNumber));
        $pdf->setCMargin(0);
        $pdf->Open();
        $pdf->SetAuthor('phpMyAdmin ' . PMA_VERSION);
        $pdf->AliasNbPages();
        $pdf->AddFont('DejaVuSans', '', 'dejavusans.php');
        $pdf->AddFont('DejaVuSans', 'B', 'dejavusansb.php');
        $pdf->AddFont('DejaVuSerif', '', 'dejavuserif.php');
        $pdf->AddFont('DejaVuSerif', 'B', 'dejavuserifb.php');
        $pdf->SetFont($this->_ff, '', 14);
        $pdf->setFooterFont(array($this->_ff, '', 14));
        $pdf->SetAutoPageBreak('auto');
        $alltables = $this->getAllTables($db,$this->pageNumber);

        if ($this->withDoc) {
            $pdf->SetAutoPageBreak('auto', 15);
            $pdf->setCMargin(1);
            $this->dataDictionaryDoc($alltables);
            $pdf->SetAutoPageBreak('auto');
            $pdf->setCMargin(0);
        }

        $pdf->Addpage();

        if ($this->withDoc) {
            $pdf->SetLink($pdf->PMA_links['RT']['-'], -1);
            $pdf->Bookmark(__('Relational schema'));
            $pdf->SetAlias('{00}', $pdf->PageNo()) ;
            $this->topMargin = 28;
            $this->bottomMargin = 28;
        }

        /* snip */
        foreach ($alltables as $table) {
            if (!isset($this->tables[$table])) {
                $this->tables[$table] = new Table_Stats($table, $this->_ff, $this->pageNumber, $this->_tablewidth, $this->showKeys, $this->tableDimension);
            }
            if ($this->sameWide) {
                $this->tables[$table]->width = $this->_tablewidth;
            }
            $this->_setMinMax($this->tables[$table]);
        }

        // Defines the scale factor
        $this->scale = ceil(
            max(
                ($this->_xMax - $this->_xMin) / ($pdf->getW() - $this->rightMargin - $this->leftMargin),
                ($this->_yMax - $this->_yMin) / ($pdf->getH() - $this->topMargin - $this->bottomMargin))
             * 100) / 100;

        $pdf->PMA_PDF_setScale($this->scale, $this->_xMin, $this->_yMin, $this->leftMargin, $this->topMargin);
        // Builds and save the PDF document
        $pdf->PMA_PDF_setLineWidthScale(0.1);

        if ($this->showGrid) {
            $pdf->SetFontSize(10);
            $this->_strokeGrid();
        }
        $pdf->PMA_PDF_setFontSizeScale(14);
        // previous logic was checking master tables and foreign tables
        // but I think that looping on every table of the pdf page as a master
        // and finding its foreigns is OK (then we can support innodb)
        $seen_a_relation = false;
        foreach ($alltables as $one_table) {
            $exist_rel = PMA_getForeigners($db, $one_table, '', 'both');
            if ($exist_rel) {
                $seen_a_relation = true;
                foreach ($exist_rel as $master_field => $rel) {
                    // put the foreign table on the schema only if selected
                    // by the user
                    // (do not use array_search() because we would have to
                    // to do a === FALSE and this is not PHP3 compatible)
                    if (in_array($rel['foreign_table'], $alltables)) {
                        $this->_addRelation($one_table, $master_field, $rel['foreign_table'], $rel['foreign_field'], $this->tableDimension);
                    }
                } // end while
            } // end if
        } // end while

        if ($seen_a_relation) {
            $this->_drawRelations($this->showColor);
        }
        $this->_drawTables($this->showColor);
        $this->_showOutput($this->pageNumber);
        exit();
    }

    /**
     * Sets X and Y minimum and maximum for a table cell
     *
     * @param string table The table name of which sets XY co-ordinates
     * @access private
     */
    private function _setMinMax($table)
    {
        $this->_xMax = max($this->_xMax, $table->x + $table->width);
        $this->_yMax = max($this->_yMax, $table->y + $table->height);
        $this->_xMin = min($this->_xMin, $table->x);
        $this->_yMin = min($this->_yMin, $table->y);
    }

    /**
     * Defines relation objects
     *
     * @param string master_table The master table name
     * @param string master_field The relation field in the master table
     * @param string foreign_table The foreign table name
     * @param string foreign_field The relation field in the foreign table
     * @param boolean show_info Whether to display table position or not
     * @access private
     * @see _setMinMax
     */
    private function _addRelation($masterTable, $masterField, $foreignTable, $foreignField, $showInfo)
    {
        if (!isset($this->tables[$masterTable])) {
            $this->tables[$masterTable] = new Table_Stats($masterTable, $this->_ff, $this->pageNumber, $this->_tablewidth, false, $showInfo);
            $this->_setMinMax($this->tables[$masterTable]);
        }
        if (!isset($this->tables[$foreignTable])) {
            $this->tables[$foreignTable] = new Table_Stats($foreignTable, $this->_ff, $this->pageNumber, $this->_tablewidth, false, $showInfo);
            $this->_setMinMax($this->tables[$foreignTable]);
        }
        $this->relations[] = new Relation_Stats($this->tables[$masterTable], $masterField, $this->tables[$foreignTable], $foreignField);
    }

    /**
     * Draws the grid
     *
     * @global object  the current PMA_PDF instance
     * @access private
     * @see PMA_PDF
     */
    private function _strokeGrid()
    {
        global $pdf;

        $gridSize = 10;
        $labelHeight = 4;
        $labelWidth = 5;
        if ($this->withDoc) {
            $topSpace = 6;
            $bottomSpace = 15;
        } else {
            $topSpace = 0;
            $bottomSpace = 0;
        }

        $pdf->SetMargins(0, 0);
        $pdf->SetDrawColor(200, 200, 200);
        // Draws horizontal lines
        for ($l = 0; $l <= intval(($pdf->getH() - $topSpace - $bottomSpace) / $gridSize); $l++) {
            $pdf->line(0, $l * $gridSize + $topSpace, $pdf->getW(), $l * $gridSize + $topSpace);
            // Avoid duplicates
            if ($l > 0 && $l <= intval(($pdf->getH() - $topSpace - $bottomSpace - $labelHeight) / $gridSize)) {
                $pdf->SetXY(0, $l * $gridSize + $topSpace);
                $label = (string) sprintf('%.0f', ($l * $gridSize + $topSpace - $this->topMargin) * $this->scale + $this->_yMin);
                $pdf->Cell($labelWidth, $labelHeight, ' ' . $label);
            } // end if
        } // end for
        // Draws vertical lines
        for ($j = 0; $j <= intval($pdf->getW() / $gridSize); $j++) {
            $pdf->line($j * $gridSize, $topSpace, $j * $gridSize, $pdf->getH() - $bottomSpace);
            $pdf->SetXY($j * $gridSize, $topSpace);
            $label = (string) sprintf('%.0f', ($j * $gridSize - $this->leftMargin) * $this->scale + $this->_xMin);
            $pdf->Cell($labelWidth, $labelHeight, $label);
        }
    }

    /**
     * Draws relation arrows
     *
     * @param boolean changeColor Whether to use one color per relation or not
     * @access private
     * @see Relation_Stats::relationdraw()
     */
    private function _drawRelations($changeColor)
    {
        $i = 0;
        foreach ($this->relations as $relation) {
            $relation->relationDraw($changeColor, $i);
            $i++;
        }
    }

    /**
     * Draws tables
     *
     * @param boolean changeColor Whether to display table position or not
     * @access private
     * @see Table_Stats::tableDraw()
     */
    private function _drawTables($changeColor = 0)
    {
        foreach ($this->tables as $table) {
            $table->tableDraw($this->_ff, $this->withDoc, $changeColor);
        }
    }

    /**
     * Ouputs the PDF document to a file
     * or sends the output to browser
     *
     * @global object   The current PDF document
     * @global string   The current database name
     * @global integer  The current page number (from the
     *                    $cfg['Servers'][$i]['table_coords'] table)
     * @access private
     * @see PMA_PDF
     */
    private function _showOutput($pageNumber)
    {
        global $pdf, $db, $cfgRelation;

        $pdf->SetFontSize(14);
        $pdf->SetLineWidth(0.2);
        $pdf->SetDisplayMode('fullpage');
        // Get the name of this pdfpage to use as filename (Mike Beck)
        $_name_sql = 'SELECT page_descr FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['pdf_pages'])
                    . ' WHERE page_nr = ' . $pageNumber;
        $_name_rs = PMA_query_as_controluser($_name_sql);
        if ($_name_rs) {
            $_name_row = PMA_DBI_fetch_row($_name_rs);
            $filename = $_name_row[0] . '.pdf';
        }
        if (empty($filename)) {
            $filename = $pageNumber . '.pdf';
        }
        $filename = PMA_sanitize_filename($filename);

        // instead of $pdf->Output():
        $pdfData = $pdf->getPDFData();
        header('Content-Type: application/pdf');
        header('Content-Length: '.strlen($pdfData).'');
        header('Content-disposition: attachment; filename="'.$filename.'"');
        echo $pdfData;
    }

    public function dataDictionaryDoc($alltables)
    {
        global $db, $pdf, $orientation, $paper;
        // TOC
        $pdf->addpage($GLOBALS['orientation']);
        $pdf->Cell(0, 9, __('Table of contents'), 1, 0, 'C');
        $pdf->Ln(15);
        $i = 1;
        foreach ($alltables as $table) {
            $pdf->PMA_links['doc'][$table]['-'] = $pdf->AddLink();
            $pdf->SetX(10);
            // $pdf->Ln(1);
            $pdf->Cell(0, 6, __('Page number:') . ' {' . sprintf("%02d", $i + 1) . '}', 0, 0, 'R', 0, $pdf->PMA_links['doc'][$table]['-']);
            $pdf->SetX(10);
            $pdf->Cell(0, 6, $i . ' ' . $table, 0, 1, 'L', 0, $pdf->PMA_links['doc'][$table]['-']);
            // $pdf->Ln(1);
            $result = PMA_DBI_query('SHOW FIELDS FROM ' . PMA_backquote($table) . ';');
            while ($row = PMA_DBI_fetch_assoc($result)) {
                $pdf->SetX(20);
                $field_name = $row['Field'];
                $pdf->PMA_links['doc'][$table][$field_name] = $pdf->AddLink();
                // $pdf->Cell(0, 6, $field_name,0,1,'L',0, $pdf->PMA_links['doc'][$table][$field_name]);
            }
            $lasttable = $table;
            $i++;
        }
        $pdf->PMA_links['RT']['-'] = $pdf->AddLink();
        $pdf->SetX(10);
        $pdf->Cell(0, 6, __('Page number:') . ' {' . sprintf("%02d", $i + 1) . '}', 0, 0, 'R', 0, $pdf->PMA_links['RT']['-']);
        $pdf->SetX(10);
        $pdf->Cell(0, 6, $i . ' ' . __('Relational schema'), 0, 1, 'L', 0, $pdf->PMA_links['RT']['-']);
        $z = 0;
        foreach ($alltables as $table) {
            $z++;
            $pdf->SetAutoPageBreak(true, 15);
            $pdf->addpage($GLOBALS['orientation']);
            $pdf->Bookmark($table);
            $pdf->SetAlias('{' . sprintf("%02d", $z) . '}', $pdf->PageNo()) ;
            $pdf->PMA_links['RT'][$table]['-'] = $pdf->AddLink();
            $pdf->SetLink($pdf->PMA_links['doc'][$table]['-'], -1);
            $pdf->SetFont($this->_ff, 'B', 18);
            $pdf->Cell(0, 8, $z . ' ' . $table, 1, 1, 'C', 0, $pdf->PMA_links['RT'][$table]['-']);
            $pdf->SetFont($this->_ff, '', 8);
            $pdf->ln();

            $cfgRelation = PMA_getRelationsParam();
            $comments = PMA_getComments($db, $table);
            if ($cfgRelation['mimework']) {
                $mime_map = PMA_getMIME($db, $table, true);
            }

            /**
             * Gets table informations
             */
            $showtable    = PMA_Table::sGetStatusInfo($db, $table);
            $num_rows     = (isset($showtable['Rows']) ? $showtable['Rows'] : 0);
            $show_comment = (isset($showtable['Comment']) ? $showtable['Comment'] : '');
            $create_time  = (isset($showtable['Create_time']) ? PMA_localisedDate(strtotime($showtable['Create_time'])) : '');
            $update_time  = (isset($showtable['Update_time']) ? PMA_localisedDate(strtotime($showtable['Update_time'])) : '');
            $check_time   = (isset($showtable['Check_time']) ? PMA_localisedDate(strtotime($showtable['Check_time'])) : '');

            /**
             * Gets table keys and retains them
             */
            $result = PMA_DBI_query('SHOW KEYS FROM ' . PMA_backquote($table) . ';');
            $primary = '';
            $indexes = array();
            $lastIndex = '';
            $indexes_info = array();
            $indexes_data = array();
            $pk_array = array(); // will be use to emphasis prim. keys in the table
            // view
            while ($row = PMA_DBI_fetch_assoc($result)) {
                // Backups the list of primary keys
                if ($row['Key_name'] == 'PRIMARY') {
                    $primary .= $row['Column_name'] . ', ';
                    $pk_array[$row['Column_name']] = 1;
                }
                // Retains keys informations
                if ($row['Key_name'] != $lastIndex) {
                    $indexes[] = $row['Key_name'];
                    $lastIndex = $row['Key_name'];
                }
                $indexes_info[$row['Key_name']]['Sequences'][] = $row['Seq_in_index'];
                $indexes_info[$row['Key_name']]['Non_unique'] = $row['Non_unique'];
                if (isset($row['Cardinality'])) {
                    $indexes_info[$row['Key_name']]['Cardinality'] = $row['Cardinality'];
                }
                // I don't know what does following column mean....
                // $indexes_info[$row['Key_name']]['Packed']          = $row['Packed'];
                $indexes_info[$row['Key_name']]['Comment'] = $row['Comment'];

                $indexes_data[$row['Key_name']][$row['Seq_in_index']]['Column_name'] = $row['Column_name'];
                if (isset($row['Sub_part'])) {
                    $indexes_data[$row['Key_name']][$row['Seq_in_index']]['Sub_part'] = $row['Sub_part'];
                }
            } // end while
            if ($result) {
                PMA_DBI_free_result($result);
            }

            /**
             * Gets fields properties
             */
            $result = PMA_DBI_query('SHOW FIELDS FROM ' . PMA_backquote($table) . ';', null, PMA_DBI_QUERY_STORE);
            $fields_cnt = PMA_DBI_num_rows($result);
            // Check if we can use Relations (Mike Beck)
            if (!empty($cfgRelation['relation'])) {
                // Find which tables are related with the current one and write it in
                // an array
                $res_rel = PMA_getForeigners($db, $table);

                if (count($res_rel) > 0) {
                    $have_rel = true;
                } else {
                    $have_rel = false;
                }
            } else {
                $have_rel = false;
            } // end if

            /**
             * Displays the comments of the table if MySQL >= 3.23
             */

            $break = false;
            if (!empty($show_comment)) {
                $pdf->Cell(0, 3, __('Table comments') . ' : ' . $show_comment, 0, 1);
                $break = true;
            }

            if (!empty($create_time)) {
                $pdf->Cell(0, 3, __('Creation') . ': ' . $create_time, 0, 1);
                $break = true;
            }

            if (!empty($update_time)) {
                $pdf->Cell(0, 3, __('Last update') . ': ' . $update_time, 0, 1);
                $break = true;
            }

            if (!empty($check_time)) {
                $pdf->Cell(0, 3, __('Last check') . ': ' . $check_time, 0, 1);
                $break = true;
            }

            if ($break == true) {
                $pdf->Cell(0, 3, '', 0, 1);
                $pdf->Ln();
            }

            $pdf->SetFont($this->_ff, 'B');
            if (isset($orientation) && $orientation == 'L') {
                $pdf->Cell(25, 8, ucfirst(__('Column')), 1, 0, 'C');
                $pdf->Cell(20, 8, ucfirst(__('Type')), 1, 0, 'C');
                $pdf->Cell(20, 8, ucfirst(__('Attributes')), 1, 0, 'C');
                $pdf->Cell(10, 8, ucfirst(__('Null')), 1, 0, 'C');
                $pdf->Cell(20, 8, ucfirst(__('Default')), 1, 0, 'C');
                $pdf->Cell(25, 8, ucfirst(__('Extra')), 1, 0, 'C');
                $pdf->Cell(45, 8, ucfirst(__('Links to')), 1, 0, 'C');

                if ($paper == 'A4') {
                    $comments_width = 67;
                } else {
                    // this is really intended for 'letter'
                    /**
                     * @todo find optimal width for all formats
                     */
                    $comments_width = 50;
                }
                $pdf->Cell($comments_width, 8, ucfirst(__('Comments')), 1, 0, 'C');
                $pdf->Cell(45, 8, 'MIME', 1, 1, 'C');
                $pdf->SetWidths(array(25, 20, 20, 10, 20, 25, 45, $comments_width, 45));
            } else {
                $pdf->Cell(20, 8, ucfirst(__('Column')), 1, 0, 'C');
                $pdf->Cell(20, 8, ucfirst(__('Type')), 1, 0, 'C');
                $pdf->Cell(20, 8, ucfirst(__('Attributes')), 1, 0, 'C');
                $pdf->Cell(10, 8, ucfirst(__('Null')), 1, 0, 'C');
                $pdf->Cell(15, 8, ucfirst(__('Default')), 1, 0, 'C');
                $pdf->Cell(15, 8, ucfirst(__('Extra')), 1, 0, 'C');
                $pdf->Cell(30, 8, ucfirst(__('Links to')), 1, 0, 'C');
                $pdf->Cell(30, 8, ucfirst(__('Comments')), 1, 0, 'C');
                $pdf->Cell(30, 8, 'MIME', 1, 1, 'C');
                $pdf->SetWidths(array(20, 20, 20, 10, 15, 15, 30, 30, 30));
            }
            $pdf->SetFont($this->_ff, '');

            while ($row = PMA_DBI_fetch_assoc($result)) {
                $type = $row['Type'];
                // reformat mysql query output
                // set or enum types: slashes single quotes inside options
                if (preg_match('@^(set|enum)\((.+)\)$@i', $type, $tmp)) {
                    $tmp[2] = substr(preg_replace("@([^,])''@", "\\1\\'", ',' . $tmp[2]), 1);
                    $type = $tmp[1] . '(' . str_replace(',', ', ', $tmp[2]) . ')';
                    $type_nowrap = '';

                    $binary = 0;
                    $unsigned = 0;
                    $zerofill = 0;
                } else {
                    $type_nowrap = ' nowrap="nowrap"';
                    $type = preg_replace('@BINARY@i', '', $type);
                    $type = preg_replace('@ZEROFILL@i', '', $type);
                    $type = preg_replace('@UNSIGNED@i', '', $type);
                    if (empty($type)) {
                        $type = '&nbsp;';
                    }

                    $binary = stristr($row['Type'], 'BINARY');
                    $unsigned = stristr($row['Type'], 'UNSIGNED');
                    $zerofill = stristr($row['Type'], 'ZEROFILL');
                }
                $attribute = ' ';
                if ($binary) {
                    $attribute = 'BINARY';
                }
                if ($unsigned) {
                    $attribute = 'UNSIGNED';
                }
                if ($zerofill) {
                    $attribute = 'UNSIGNED ZEROFILL';
                }
                if (!isset($row['Default'])) {
                    if ($row['Null'] != '' && $row['Null'] != 'NO') {
                        $row['Default'] = 'NULL';
                    }
                }
                $field_name = $row['Field'];
                // $pdf->Ln();
                $pdf->PMA_links['RT'][$table][$field_name] = $pdf->AddLink();
                $pdf->Bookmark($field_name, 1, -1);
                $pdf->SetLink($pdf->PMA_links['doc'][$table][$field_name], -1);
                $pdf_row = array($field_name,
                    $type,
                    $attribute,
                    ($row['Null'] == '' || $row['Null'] == 'NO') ? __('No') : __('Yes'),
                    ((isset($row['Default'])) ? $row['Default'] : ''),
                    $row['Extra'],
                    ((isset($res_rel[$field_name])) ? $res_rel[$field_name]['foreign_table'] . ' -> ' . $res_rel[$field_name]['foreign_field'] : ''),
                    ((isset($comments[$field_name])) ? $comments[$field_name] : ''),
                    ((isset($mime_map) && isset($mime_map[$field_name])) ? str_replace('_', '/', $mime_map[$field_name]['mimetype']) : '')
                    );
                $links[0] = $pdf->PMA_links['RT'][$table][$field_name];
                if (isset($res_rel[$field_name]['foreign_table']) AND
                        isset($res_rel[$field_name]['foreign_field']) AND
                        isset($pdf->PMA_links['doc'][$res_rel[$field_name]['foreign_table']][$res_rel[$field_name]['foreign_field']])
                        )
                {
                    $links[6] = $pdf->PMA_links['doc'][$res_rel[$field_name]['foreign_table']][$res_rel[$field_name]['foreign_field']];
                } else {
                    unset($links[6]);
                }
                $pdf->Row($pdf_row, $links);
            } // end while
            $pdf->SetFont($this->_ff, '', 14);
            PMA_DBI_free_result($result);
        } //end each
    }
}
?>