fpdf.php

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<?php
/* $Id: fpdf.php,v 2.3 2004/05/20 16:14:13 nijel Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:

/****************************************************************************
* Software : FPDF                                                           *
* Version :  1.51                                                           *
* Date :     2002/08/03                                                     *
* Author :   Olivier PLATHEY                                                *
* Website :  http://www.fpdf.org                                            *
* Licence :  Freeware                                                       *
*                                                                           *
* You are entitled to modify this soft as you want to.                      *
****************************************************************************/


$FPDF_version = (string) '1.51';


/**
 * The FPDF class
 */
class FPDF
{
    /**
     * Defines private properties
     */
    var $page;               // current page number
    var $n;                  // current object number
    var $offsets;            // array of object offsets
    var $buffer;             // buffer holding in-memory PDF
    var $pages;              // array containing pages
    var $state;              // current document state
    var $compress;           // compression flag
    var $DefOrientation;     // default orientation
    var $CurOrientation;     // current orientation
    var $OrientationChanges; // array indicating orientation changes
    var $fwPt, $fhPt;        // dimensions of page format in points
    var $fw, $fh;            // dimensions of page format in user unit
    var $wPt, $hPt;          // current dimensions of page in points
    var $k;                  // scale factor (number of points in user unit)
    var $w, $h;              // current dimensions of page in user unit
    var $lMargin;            // left margin
    var $tMargin;            // top margin
    var $rMargin;            // right margin
    var $bMargin;            // page break margin
    var $cMargin;            // cell margin
    var $x, $y;              // current position in user unit for cell positionning
    var $lasth;              // height of last cell printed
    var $LineWidth;          // line width in user unit
    var $CoreFonts;          // array of standard font names
    var $fonts;              // array of used fonts
    var $FontFiles;          // array of font files
    var $diffs;              // array of encoding differences
    var $images;             // array of used images
    var $PageLinks;          // array of links in pages
    var $links;              // array of internal links
    var $FontFamily;         // current font family
    var $FontStyle;          // current font style
    var $CurrentFont;        // current font info
    var $FontSizePt;         // current font size in points
    var $FontSize;           // current font size in user unit
    var $DrawColor;          // commands for drawing color
    var $FillColor;          // commands for filling color
    var $TextColor;          // commands for text color
    var $ColorFlag;          // indicates whether fill and text colors are different
    var $ws;                 // word spacing
    var $underline;          // whether underline is current state or not
    var $AutoPageBreak;      // automatic page breaking
    var $PageBreakTrigger;   // threshold used to trigger page breaks
    var $InFooter;           // flag set when processing footer
    var $ZoomMode;           // zoom display mode
    var $LayoutMode;         // layout display mode
    var $title;              // title
    var $subject;            // subject
    var $author;             // author
    var $keywords;           // keywords
    var $creator;            // creator
    var $AliasNbPages;       // alias for total number of pages



    /**************************************************************************
    *                                                                         *
    *      Public methods below are used by some private ones. Then they      *
    *      are placed at the top of the class.                                *
    *                                                                         *
    **************************************************************************/

    /**
     * Gets the width of a string in the current font
     *
     * @param   string   The string to check
     *
     * @return  double  The string width
     *
     * @access  public
     */
    function GetStringWidth($s)
    {
        $s     = (string) $s;
        // loic1: PHP3 compatibility
        // $cw    = &$this->CurrentFont['cw'];
        $w     = 0;
        $l     = strlen($s);
        for ($i = 0; $i < $l; $i++) {
            // $w += $cw[$s[$i]];
            $w += $this->CurrentFont['cw'][$s[$i]];
        } // end for

        return $w * $this->FontSize / 1000;
    } // end of the "GetStringWidth()" method


    /**
     * Displays an error message then exists
     *
     * @param  string  The error message
     *
     * @access public
     */
    function Error($msg)
    {
        die('<b>FPDF error: </b>' . $msg);
    } // end of the "Error()" method



    /**************************************************************************
    *                                                                         *
    *                             Private methods                             *
    *                                                                         *
    **************************************************************************/

    /**
     * Adds a line to the document
     *
     * @param   string   The string to add
     *
     * @access  private
     */
    function _out($s)
    {
        if ($this->state == 2) {
            $this->pages[$this->page] .= $s . "\n";
        } else {
            $this->buffer             .= $s . "\n";
        }
    } // end of the "_out()" method


    /**
     * Starts a new object
     *
     * @access private
     */
    function _newobj()
    {
        $this->n++;
        $this->offsets[$this->n] = strlen($this->buffer);
        $this->_out($this->n . ' 0 obj');
    } // end of the "_newobj()" method


    /**
     * Adds a "\" before "\", "(" and ")" characters
     *
     * @param   string   The string to slash
     *
     * @return  integer  The slashed string
     *
     * @access  private
     */
    function _escape($s)
    {
        return str_replace(')', '\\)', str_replace('(', '\\(', str_replace('\\', '\\\\', $s)));
    } // end of the "_escape()" method


    /**
     * Formats a text stringrs
     *
     * @param   string   The string to format
     *
     * @return  integer  The formatted string
     *
     * @access  private
     *
     * @see     _escape()
     */
    function _textstring($s)
    {
        return '(' . $this->_escape($s) . ')';
    } // end of the "_textstring()" method


    /**
     * Outputs a stream
     *
     * @param   string   The stream to ouput
     *
     * @access  private
     *
     * @see     _out()
     */
    function _putstream($s)
    {
        $this->_out('stream');
        $this->_out($s);
        $this->_out('endstream');
    } // end of the "_putstream()" method


    /**
     * Starts document
     *
     * @access private
     */
    function _begindoc()
    {
        $this->state = 1;
        $this->_out('%PDF-1.3');
    } // end of the "_begindoc()" method


    /**
     * Puts pages
     *
     * @access private
     */
    function _putpages()
    {
        $nb = $this->page;

        if (!empty($this->AliasNbPages)) {
            // Replaces number of pages
            for ($n = 1; $n <= $nb; $n++) {
                $this->pages[$n] = str_replace($this->AliasNbPages, $nb, $this->pages[$n]);
            }
        }
        if ($this->DefOrientation == 'P') {
            $wPt = $this->fwPt;
            $hPt = $this->fhPt;
        } else {
            $wPt = $this->fhPt;
            $hPt = $this->fwPt;
        }
        $filter = ($this->compress) ? '/Filter /FlateDecode ' : '';

        for ($n=1; $n <= $nb; $n++) {
            // Page
            $this->_newobj();
            $this->_out('<</Type /Page');
            $this->_out('/Parent 1 0 R');
            if (isset($this->OrientationChanges[$n])) {
                $this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]', $hPt, $wPt));
            }
            $this->_out('/Resources 2 0 R');
            if (isset($this->PageLinks[$n])) {
                // Links
                $annots         = '/Annots [';
                reset($this->PageLinks[$n]);
                while (list(, $pl) = each($this->PageLinks[$n])) {
                    $rect       = sprintf('%.2f %.2f %.2f %.2f', $pl[0], $pl[1], $pl[0] + $pl[2], $pl[1] - $pl[3]);
                    $annots     .= '<</Type /Annot /Subtype /Link /Rect [' . $rect . '] /Border [0 0 0] ';
                    if (is_string($pl[4])) {
                        $annots .= '/A <</S /URI /URI ' . $this->_textstring($pl[4]) . '>>>>';
                    }
                    else {
                        $l      = $this->links[$pl[4]];
                        $h      = isset($this->OrientationChanges[$l[0]]) ? $wPt : $hPt;
                        $annots .= sprintf('/Dest [%d 0 R /XYZ 0 %.2f null]>>', 1 + 2 * $l[0], $h - $l[1] * $this->k);
                    }
                } // end while
                $this->_out($annots . ']');
            } // end if
            $this->_out('/Contents ' . ($this->n+1).' 0 R>>');
            $this->_out('endobj');

            // Page content
            $p = ($this->compress) ? gzcompress($this->pages[$n]) : $this->pages[$n];
            $this->_newobj();
            $this->_out('<<' . $filter . '/Length ' . strlen($p) . '>>');
            $this->_putstream($p);
            $this->_out('endobj');
        } // end for

        // Pages root
        $this->offsets[1]=strlen($this->buffer);
        $this->_out('1 0 obj');
        $this->_out('<</Type /Pages');
        $kids     = '/Kids [';
        for ($i = 0; $i < $nb; $i++) {
            $kids .= (3 + 2 * $i) . ' 0 R ';
        }
        $this->_out($kids . ']');
        $this->_out('/Count ' . $nb);
        $this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]', $wPt, $hPt));
        $this->_out('>>');
        $this->_out('endobj');
    } // end of the "_putpages()" method


    /**
     * Puts font faces
     *
     * @access private
     */
    function _putfonts()
    {
        $nf = $this->n;

        foreach ($this->diffs AS $diff) {
            // Encodings
            $this->_newobj();
            $this->_out('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences [' . $diff . ']>>');
            $this->_out('endobj');
        } // end while

        $mqr = get_magic_quotes_runtime();
        set_magic_quotes_runtime(0);

        foreach ($this->FontFiles AS $file => $info) {
            // Font file embedding
            $this->_newobj();
            $this->FontFiles[$file]['n'] = $this->n;
            if (isset($GLOBALS['FPDF_font_path'])) {
                $file = $GLOBALS['FPDF_font_path'] . $file;
            }
            $size     = filesize($file);
            if (!$size) {
                $this->Error('Font file not found');
            }
            $this->_out('<</Length ' . $size);
            if (substr($file, -2) == '.z') {
                $this->_out('/Filter /FlateDecode');
            }
            $this->_out('/Length1 ' . $info['length1']);
            if (isset($info['length2'])) {
                $this->_out('/Length2 ' . $info['length2'] . ' /Length3 0');
            }
            $this->_out('>>');
            $f = fopen($file, 'rb');
            $this->_putstream(fread($f, $size));
            fclose($f);
            $this->_out('endobj');
        } // end while
        set_magic_quotes_runtime($mqr);

        foreach ($this->fonts AS $k => $font) {
            // Font objects
            $this->_newobj();
            $this->fonts[$k]['n'] = $this->n;
            $name                 = $font['name'];
            $this->_out('<</Type /Font');
            $this->_out('/BaseFont /' . $name);
            if ($font['type'] == 'core')  {
                // Standard font
                $this->_out('/Subtype /Type1');
                if ($name != 'Symbol' && $name != 'ZapfDingbats') {
                    $this->_out('/Encoding /WinAnsiEncoding');
                }
            }
            else {
                // Additional font
                $this->_out('/Subtype /' . $font['type']);
                $this->_out('/FirstChar 32');
                $this->_out('/LastChar 255');
                $this->_out('/Widths ' . ($this->n + 1) . ' 0 R');
                $this->_out('/FontDescriptor ' . ($this->n + 2) . ' 0 R');
                if ($font['enc']) {
                    if (isset($font['diff'])) {
                        $this->_out('/Encoding ' . ($nf + $font['diff']) . ' 0 R');
                    } else {
                        $this->_out('/Encoding /WinAnsiEncoding');
                    }
                }
            } // end if... else...
            $this->_out('>>');
            $this->_out('endobj');
            if ($font['type'] != 'core')  {
                // Widths
                $this->_newobj();
                $s     = '[';
                for ($i = 32; $i <= 255; $i++) {
                    $s .= $font['cw'][chr($i)] . ' ';
                }
                $this->_out($s . ']');
                $this->_out('endobj');
                // Descriptor
                $this->_newobj();
                $s     = '<</Type /FontDescriptor /FontName /' . $name;
                foreach ($font['desc'] AS $k => $v) {
                    $s .= ' /' . $k . ' ' . $v;
                }
                $file = $font['file'];
                if ($file) {
                    $s .= ' /FontFile' . ($font['type'] == 'Type1' ? '' : '2') . ' ' . $this->FontFiles[$file]['n'] . ' 0 R';
                }
                $this->_out($s . '>>');
                $this->_out('endobj');
            } // end if
        } // end while
    } // end of the "_putfonts()" method


    /**
     * Puts images
     *