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<?php
 /**
 * Cpdf
 *
 * http://www.ros.co.nz/pdf
 *
 * A PHP class to provide the basic functionality to create a pdf document without
 * any requirement for additional modules.
 *
 * Note that they companion class CezPdf can be used to extend this class and dramatically
 * simplify the creation of documents.
 *
 * IMPORTANT NOTE
 * there is no warranty, implied or otherwise with this software.
 *
 * LICENCE
 * This code has been placed in the Public Domain for all to enjoy.
 *
 * @author Wayne Munro <pdf@ros.co.nz>
 * @version 009
 * @package Cpdf
 */
class Cpdf {

/**
   * the current number of pdf objects in the document
   */
  public  $numObj = 0;

/**
   * this array contains all of the pdf objects, ready for final assembly
   */
  public  $objects =  array();

/**
   * the objectId (number within the objects array) of the document catalog
   */
  public  $catalogId;

/**
   * array carrying information about the fonts that the system currently knows about
   * used to ensure that a font is not loaded twice, among other things
   */
  public  $fonts = array();

/**
   * a record of the current font
   */
  public  $currentFont = '';

/**
   * the current base font
   */
  public  $currentBaseFont = '';

/**
   * the number of the current font within the font array
   */
  public  $currentFontNum = 0;

/**
   *
   */
  public  $currentNode;

/**
   * object number of the current page
   */
  public  $currentPage;

/**
   * object number of the currently active contents block
   */
  public  $currentContents;

/**
   * number of fonts within the system
   */
  public  $numFonts = 0;

/**
   * Number of graphic state resources used
   */
  private  $numStates =  0;

/**
   * current colour for fill operations, defaults to inactive value, all three components should be between 0 and 1 inclusive when active
   */
  public  $currentColour = array('r'=>-1, 'g'=>-1, 'b'=>-1);

/**
   * current colour for stroke operations (lines etc.)
   */
  public  $currentStrokeColour = array('r'=>-1, 'g'=>-1, 'b'=>-1);

/**
   * current style that lines are drawn in
   */
  public  $currentLineStyle = '';

/**
   * current line transparency (partial graphics state)
   */
  public $currentLineTransparency = array("mode" => "Normal", "opacity" => 1.0);
  
  /**
   * current fill transparency (partial graphics state)
   */
  public $currentFillTransparency = array("mode" => "Normal", "opacity" => 1.0);
  
  /**
   * an array which is used to save the state of the document, mainly the colours and styles
   * it is used to temporarily change to another state, the change back to what it was before
   */
  public  $stateStack =  array();

/**
   * number of elements within the state stack
   */
  public  $nStateStack =  0;

/**
   * number of page objects within the document
   */
  public  $numPages = 0;

/**
   * object Id storage stack
   */
  public  $stack = array();

/**
   * number of elements within the object Id storage stack
   */
  public  $nStack = 0;

/**
   * an array which contains information about the objects which are not firmly attached to pages
   * these have been added with the addObject function
   */
  public  $looseObjects = array();

/**
   * array contains infomation about how the loose objects are to be added to the document
   */
  public  $addLooseObjects = array();

/**
   * the objectId of the information object for the document
   * this contains authorship, title etc.
   */
  public  $infoObject = 0;

/**
   * number of images being tracked within the document
   */
  public  $numImages = 0;

/**
   * an array containing options about the document
   * it defaults to turning on the compression of the objects
   */
  public  $options = array('compression'=>1);

/**
   * the objectId of the first page of the document
   */
  public  $firstPageId;

/**
   * used to track the last used value of the inter-word spacing, this is so that it is known
   * when the spacing is changed.
   */
  public  $wordSpaceAdjust = 0;

/**
   * the object Id of the procset object
   */
  public  $procsetObjectId;

/**
   * store the information about the relationship between font families
   * this used so that the code knows which font is the bold version of another font, etc.
   * the value of this array is initialised in the constuctor function.
   */
  public  $fontFamilies =  array();

/**
   * track if the current font is bolded or italicised
   */
  public  $currentTextState =  '';

/**
   * messages are stored here during processing, these can be selected afterwards to give some useful debug information
   */
  public  $messages = '';

/**
   * the ancryption array for the document encryption is stored here
   */
  public  $arc4 = '';

/**
   * the object Id of the encryption information
   */
  public  $arc4_objnum = 0;

/**
   * the file identifier, used to uniquely identify a pdf document
   */
  public  $fileIdentifier = '';

/**
   * a flag to say if a document is to be encrypted or not
   */
  public  $encrypted = 0;

/**
   * the ancryption key for the encryption of all the document content (structure is not encrypted)
   */
  public  $encryptionKey = '';

/**
   * array which forms a stack to keep track of nested callback functions
   */
  public  $callback =  array();

/**
   * the number of callback functions in the callback array
   */
  public  $nCallback =  0;

/**
   * store label->id pairs for named destinations, these will be used to replace internal links
   * done this way so that destinations can be defined after the location that links to them
   */
  public  $destinations =  array();

/**
   * store the stack for the transaction commands, each item in here is a record of the values of all the
   * publiciables within the class, so that the user can rollback at will (from each 'start' command)
   * note that this includes the objects array, so these can be large.
   */
  public  $checkpoint =  '';

/**
   * class constructor
   * this will start a new document
   * @var array array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
   */
  function  Cpdf ($pageSize = array(0, 0, 612, 792)) {

$this->newDocument($pageSize);

// also initialize the font families that are known about already
    $this->setFontFamily('init');

//  $this->fileIdentifier = md5('xxxxxxxx'.time());

}

/**
   * Document object methods (internal use only)
   *
   * There is about one object method for each type of object in the pdf document
   * Each function has the same call list ($id,$action,$options).
   * $id = the object ID of the object, or what it is to be if it is being created
   * $action = a string specifying the action to be performed, though ALL must support:
   *           'new' - create the object with the id $id
   *           'out' - produce the output for the pdf object
   * $options = optional, a string or array containing the various parameters for the object
   *
   * These, in conjunction with the output function are the ONLY way for output to be produced
   * within the pdf 'file'.
   */

/**
   *destination object, used to specify the location for the user to jump to, presently on opening
   */
  function  o_destination($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch ($action) {

case  'new':

$this->objects[$id] = array('t'=>'destination', 'info'=>array());

$tmp =  '';

switch  ($options['type']) {

case  'XYZ':

case  'FitR':

$tmp =   ' '.$options['p3'].$tmp;

case  'FitH':

case  'FitV':

case  'FitBH':

case  'FitBV':

$tmp =   ' '.$options['p1'].' '.$options['p2'].$tmp;

case  'Fit':

case  'FitB':

$tmp =   $options['type'].$tmp;

$this->objects[$id]['info']['string'] = $tmp;

$this->objects[$id]['info']['page'] = $options['page'];
      }

break;

case  'out':

$tmp =  $o['info'];

$res = "\n".$id." 0 obj\n".'['.$tmp['page'].' 0 R /'.$tmp['string']."]\nendobj\n";

return  $res;

break;
    }
  }

/**
   * set the viewer preferences
   */
  function  o_viewerPreferences($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'viewerPreferences', 'info'=>array());

break;

case  'add':

foreach($options as  $k=>$v) {

switch  ($k) {

case  'HideToolbar':

case  'HideMenubar':

case  'HideWindowUI':

case  'FitWindow':

case  'CenterWindow':

case  'NonFullScreenPageMode':

case  'Direction':

$o['info'][$k] = $v;

break;
        }
      }

break;

case  'out':

$res = "\n".$id." 0 obj\n".'<< ';

foreach($o['info'] as  $k=>$v) {

$res.= "\n/".$k.' '.$v;
      }

$res.= "\n>>\n";

return  $res;

break;
    }
  }

/**
   * define the document catalog, the overall controller for the document
   */
  function  o_catalog($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'catalog', 'info'=>array());

$this->catalogId = $id;

break;

case  'outlines':

case  'pages':

case  'openHere':

$o['info'][$action] = $options;

break;

case  'viewerPreferences':

if  (!isset($o['info']['viewerPreferences'])) {

$this->numObj++;

$this->o_viewerPreferences($this->numObj, 'new');

$o['info']['viewerPreferences'] = $this->numObj;
      }

$vp =  $o['info']['viewerPreferences'];

$this->o_viewerPreferences($vp, 'add', $options);

break;

case  'out':

$res = "\n".$id." 0 obj\n".'<< /Type /Catalog';

foreach($o['info'] as  $k=>$v) {

switch ($k) {

case  'outlines':

$res.= "\n".'/Outlines '.$v.' 0 R';

break;

case  'pages':

$res.= "\n".'/Pages '.$v.' 0 R';

break;

case  'viewerPreferences':

$res.= "\n".'/ViewerPreferences '.$o['info']['viewerPreferences'].' 0 R';

break;

case  'openHere':

$res.= "\n".'/OpenAction '.$o['info']['openHere'].' 0 R';

break;
        }
      }

$res.= " >>\nendobj";

return  $res;

break;
    }
  }

/**
   * object which is a parent to the pages in the document
   */
  function  o_pages($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'pages', 'info'=>array());

$this->o_catalog($this->catalogId, 'pages', $id);

break;

case  'page':

if  (!is_array($options)) {

// then it will just be the id of the new page
        $o['info']['pages'][] = $options;
      } else {

// then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative
        // and pos is either 'before' or 'after', saying where this page will fit.
        if  (isset($options['id']) &&  isset($options['rid']) &&  isset($options['pos'])) {

$i =  array_search($options['rid'], $o['info']['pages']);

if  (isset($o['info']['pages'][$i]) &&  $o['info']['pages'][$i] == $options['rid']) {

// then there is a match
            // make a space
            switch  ($options['pos']) {

case  'before':

$k =  $i;

break;

case  'after':

$k = $i+1;

break;

default:

$k = -1;

break;
            }

if  ($k >= 0) {

for  ($j = count($o['info']['pages']) -1;$j >= $k;$j--) {

$o['info']['pages'][$j+1] = $o['info']['pages'][$j];
              }

$o['info']['pages'][$k] = $options['id'];
            }
          }
        }
      }

break;

case  'procset':

$o['info']['procset'] = $options;

break;

case  'mediaBox':

$o['info']['mediaBox'] = $options;
      // which should be an array of 4 numbers
      break;

case  'font':

$o['info']['fonts'][] = array('objNum'=>$options['objNum'], 'fontNum'=>$options['fontNum']);

break;

case  'extGState':

$o['info']['extGStates'][] =  array('objNum' => $options['objNum'],  'stateNum' => $options['stateNum']);

break;

case  'xObject':

$o['info']['xObjects'][] = array('objNum'=>$options['objNum'], 'label'=>$options['label']);

break;

case  'out':

if  (count($o['info']['pages'])) {

$res = "\n".$id." 0 obj\n<< /Type /Pages\n/Kids [";

foreach($o['info']['pages'] as  $k=>$v) {

$res.= $v." 0 R\n";
        }

$res.= "]\n/Count ".count($this->objects[$id]['info']['pages']);

if  ( (isset($o['info']['fonts']) &&  count($o['info']['fonts'])) ||
              isset($o['info']['procset']) ||
              (isset($o['info']['extGStates']) &&  count($o['info']['extGStates']))) {

$res.= "\n/Resources <<";

if  (isset($o['info']['procset'])) {

$res.= "\n/ProcSet ".$o['info']['procset']." 0 R";
          }

if  (isset($o['info']['fonts']) &&  count($o['info']['fonts'])) {

$res.= "\n/Font << ";

foreach($o['info']['fonts'] as  $finfo) {

$res.= "\n/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R";
            }

$res.= " >>";
          }

if  (isset($o['info']['xObjects']) &&  count($o['info']['xObjects'])) {

$res.= "\n/XObject << ";

foreach($o['info']['xObjects'] as  $finfo) {

$res.= "\n/".$finfo['label']." ".$finfo['objNum']." 0 R";
            }

$res.= " >>";
          }

if  ( isset($o['info']['extGStates']) &&  count($o['info']['extGStates'])) {

$res.= "\n/ExtGState << ";

foreach ($o['info']['extGStates'] as  $gstate) {

$res.=  "\n/GS" . $gstate['stateNum'] . " " . $gstate['objNum'] . " 0 R";
            }

$res.=  " >>";
          }

$res.= "\n>>";

if  (isset($o['info']['mediaBox'])) {

$tmp = $o['info']['mediaBox'];

$res.= "\n/MediaBox [".sprintf('%.3f', $tmp[0]) .' '.sprintf('%.3f', $tmp[1]) .' '.sprintf('%.3f', $tmp[2]) .' '.sprintf('%.3f', $tmp[3]) .']';
          }
        }

$res.= "\n >>\nendobj";
      } else {

$res = "\n".$id." 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj";
 }

return  $res;

break;
    }
  }

/**
   * define the outlines in the doc, empty for now
   */
  function  o_outlines($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'outlines', 'info'=>array('outlines'=>array()));

$this->o_catalog($this->catalogId, 'outlines', $id);

break;

case  'outline':

$o['info']['outlines'][] = $options;

break;

case  'out':

if  (count($o['info']['outlines'])) {

$res = "\n".$id." 0 obj\n<< /Type /Outlines /Kids [";

foreach($o['info']['outlines'] as  $k=>$v) {

$res.= $v." 0 R ";
        }

$res.= "] /Count ".count($o['info']['outlines']) ." >>\nendobj";
      } else {

$res = "\n".$id." 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
 }

return  $res;

break;
    }
  }

/**
   * an object to hold the font description
   */
  function  o_font($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] =  array('t' => 'font', 'info' => array('name' => $options['name'], 'SubType' => 'Type1'));

$fontNum =  $this->numFonts;

$this->objects[$id]['info']['fontNum'] =  $fontNum;

// deal with the encoding and the differences
      if  (isset($options['differences'])) {

// then we'll need an encoding dictionary
        $this->numObj++;

$this->o_fontEncoding($this->numObj, 'new', $options);

$this->objects[$id]['info']['encodingDictionary'] =  $this->numObj;
      } else  if  (isset($options['encoding'])) {

// we can specify encoding here
        switch ($options['encoding']) {

case  'WinAnsiEncoding':

case  'MacRomanEncoding':

case  'MacExpertEncoding':

$this->objects[$id]['info']['encoding'] =  $options['encoding'];

break;

case  'none':

break;

default:

$this->objects[$id]['info']['encoding'] =  'WinAnsiEncoding';

break;
        }
      } else {

$this->objects[$id]['info']['encoding'] =  'WinAnsiEncoding';
      }

// also tell the pages node about the new font
      $this->o_pages($this->currentNode, 'font', array('fontNum' => $fontNum, 'objNum' => $id));

break;

case  'add':

foreach ($options as  $k => $v) {

switch  ($k) {

case  'BaseFont':

$o['info']['name'] =  $v;

break;

case  'FirstChar':

case  'LastChar':

case  'Widths':

case  'FontDescriptor':

case  'SubType':

$this->addMessage('o_font '.$k." : ".$v);

$o['info'][$k] =  $v;

break;
        }
      }

break;

case  'out':

$res = "\n".$id." 0 obj\n<< /Type /Font\n/Subtype /".$o['info']['SubType']."\n";

$res.=  "/Name /F".$o['info']['fontNum']."\n";

$res.=  "/BaseFont /".$o['info']['name']."\n";

if  (isset($o['info']['encodingDictionary'])) {

// then place a reference to the dictionary
        $res.=  "/Encoding ".$o['info']['encodingDictionary']." 0 R\n";
      } else  if  (isset($o['info']['encoding'])) {

// use the specified encoding
        $res.=  "/Encoding /".$o['info']['encoding']."\n";
      }

if  (isset($o['info']['FirstChar'])) {

$res.=  "/FirstChar ".$o['info']['FirstChar']."\n";
      }

if  (isset($o['info']['LastChar'])) {

$res.=  "/LastChar ".$o['info']['LastChar']."\n";
      }

if  (isset($o['info']['Widths'])) {

$res.=  "/Widths ".$o['info']['Widths']." 0 R\n";
      }

if  (isset($o['info']['FontDescriptor'])) {

$res.=  "/FontDescriptor ".$o['info']['FontDescriptor']." 0 R\n";
      }

$res.=  ">>\nendobj";

return  $res;

break;
    }
  }

/**
   * a font descriptor, needed for including additional fonts
   */
  function  o_fontDescriptor($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'fontDescriptor', 'info'=>$options);

break;

case  'out':

$res = "\n".$id." 0 obj\n<< /Type /FontDescriptor\n";

foreach ($o['info'] as  $label => $value) {

switch  ($label) {

case  'Ascent':

case  'CapHeight':

case  'Descent':

case  'Flags':

case  'ItalicAngle':

case  'StemV':

case  'AvgWidth':

case  'Leading':

case  'MaxWidth':

case  'MissingWidth':

case  'StemH':

case  'XHeight':

case  'CharSet':

if  (strlen($value)) {

$res.= '/'.$label.' '.$value."\n";
          }

break;

case  'FontFile':

case  'FontFile2':

case  'FontFile3':

$res.= '/'.$label.' '.$value." 0 R\n";

break;

case  'FontBBox':

$res.= '/'.$label.' ['.$value[0].' '.$value[1].' '.$value[2].' '.$value[3]."]\n";

break;

case  'FontName':

$res.= '/'.$label.' /'.$value."\n";

break;
        }
      }

$res.= ">>\nendobj";

return  $res;

break;
    }
  }

/**
   * the font encoding
   */
  function  o_fontEncoding($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

// the options array should contain 'differences' and maybe 'encoding'
      $this->objects[$id] = array('t'=>'fontEncoding', 'info'=>$options);

break;

case  'out':

$res = "\n".$id." 0 obj\n<< /Type /Encoding\n";

if  (!isset($o['info']['encoding'])) {

$o['info']['encoding'] = 'WinAnsiEncoding';
      }

if  ($o['info']['encoding'] != 'none') {

$res.= "/BaseEncoding /".$o['info']['encoding']."\n";
      }

$res.= "/Differences \n[";

$onum = -100;

foreach($o['info']['differences'] as  $num=>$label) {

if  ($num != $onum+1) {

// we cannot make use of consecutive numbering
          $res.=  "\n".$num." /".$label;
        } else {

$res.=  " /".$label;
        }

$onum = $num;
      }

$res.= "\n]\n>>\nendobj";

return  $res;

break;
    }
  }

/**
   * the document procset, solves some problems with printing to old PS printers
   */
  function  o_procset($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'procset', 'info'=>array('PDF'=>1, 'Text'=>1));

$this->o_pages($this->currentNode, 'procset', $id);

$this->procsetObjectId = $id;

break;

case  'add':

// this is to add new items to the procset list, despite the fact that this is considered
      // obselete, the items are required for printing to some postscript printers
      switch  ($options) {

case  'ImageB':

case  'ImageC':

case  'ImageI':

$o['info'][$options] = 1;

break;
      }

break;

case  'out':

$res = "\n".$id." 0 obj\n[";

foreach ($o['info'] as  $label=>$val) {

$res.= '/'.$label.' ';
      }

$res.= "]\nendobj";

return  $res;

break;
    }
  }

/**
   * define the document information
   */
  function  o_info($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->infoObject = $id;

$date = 'D:'.@date('Ymd');

$this->objects[$id] = array('t'=>'info', 'info'=>array('Creator'=>'R and OS php pdf writer, http://www.ros.co.nz', 'CreationDate'=>$date));

break;

case  'Title':

case  'Author':

case  'Subject':

case  'Keywords':

case  'Creator':

case  'Producer':

case  'CreationDate':

case  'ModDate':

case  'Trapped':

$o['info'][$action] = $options;

break;

case  'out':

if  ($this->encrypted) {

$this->encryptInit($id);
      }

$res = "\n".$id." 0 obj\n<<\n";

foreach ($o['info'] as  $k=>$v) {

$res.= '/'.$k.' (';

if  ($this->encrypted) {

$res.= $this->filterText($this->ARC4($v));
        } else {

$res.= $this->filterText($v);
        }

$res.= ")\n";
      }

$res.= ">>\nendobj";

return  $res;

break;
    }
  }

/**
   * an action object, used to link to URLS initially
   */
  function  o_action($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

if  (is_array($options)) {

$this->objects[$id] = array('t'=>'action', 'info'=>$options, 'type'=>$options['type']);
      } else {

// then assume a URI action
        $this->objects[$id] = array('t'=>'action', 'info'=>$options, 'type'=>'URI');
      }

break;

case  'out':

if  ($this->encrypted) {

$this->encryptInit($id);
      }

$res = "\n".$id." 0 obj\n<< /Type /Action";

switch ($o['type']) {

case  'ilink':

// there will be an 'label' setting, this is the name of the destination
        $res.= "\n/S /GoTo\n/D ".$this->destinations[(string)$o['info']['label']]." 0 R";

break;

case  'URI':

$res.= "\n/S /URI\n/URI (";

if  ($this->encrypted) {

$res.= $this->filterText($this->ARC4($o['info']));
        } else {

$res.= $this->filterText($o['info']);
        }

$res.= ")";

break;
      }

$res.= "\n>>\nendobj";

return  $res;

break;
    }
  }

/**
   * an annotation object, this will add an annotation to the current page.
   * initially will support just link annotations
   */
  function  o_annotation($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

// add the annotation to the current page
      $pageId =  $this->currentPage;

$this->o_page($pageId, 'annot', $id);

// and add the action object which is going to be required
      switch ($options['type']) {

case  'link':

$this->objects[$id] = array('t'=>'annotation', 'info'=>$options);

$this->numObj++;

$this->o_action($this->numObj, 'new', $options['url']);

$this->objects[$id]['info']['actionId'] = $this->numObj;

break;

case  'ilink':

// this is to a named internal link
        $label =  $options['label'];

$this->objects[$id] = array('t'=>'annotation', 'info'=>$options);

$this->numObj++;

$this->o_action($this->numObj, 'new', array('type'=>'ilink', 'label'=>$label));

$this->objects[$id]['info']['actionId'] = $this->numObj;

break;
      }

break;

case  'out':

$res = "\n".$id." 0 obj\n<< /Type /Annot";

switch ($o['info']['type']) {

case  'link':

case  'ilink':

$res.=  "\n/Subtype /Link";

break;
      }

$res.= "\n/A ".$o['info']['actionId']." 0 R";

$res.= "\n/Border [0 0 0]";

$res.= "\n/H /I";

$res.= "\n/Rect [ ";

foreach($o['info']['rect'] as  $v) {

$res.=  sprintf("%.4f ", $v);
      }

$res.= "]";

$res.= "\n>>\nendobj";

return  $res;

break;
    }
  }

/**
   * a page object, it also creates a contents object to hold its contents
   */
  function  o_page($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->numPages++;

$this->objects[$id] = array('t'=>'page', 'info'=>array('parent'=>$this->currentNode, 'pageNum'=>$this->numPages));

if  (is_array($options)) {

// then this must be a page insertion, array shoudl contain 'rid','pos'=[before|after]
        $options['id'] = $id;

$this->o_pages($this->currentNode, 'page', $options);
      } else {

$this->o_pages($this->currentNode, 'page', $id);
      }

$this->currentPage = $id;

//make a contents object to go with this page
      $this->numObj++;

$this->o_contents($this->numObj, 'new', $id);

$this->currentContents = $this->numObj;

$this->objects[$id]['info']['contents'] = array();

$this->objects[$id]['info']['contents'][] = $this->numObj;

$match =  ($this->numPages%2 ?  'odd' :  'even');

foreach($this->addLooseObjects as  $oId=>$target) {

if  ($target == 'all' ||  $match == $target) {

$this->objects[$id]['info']['contents'][] = $oId;
        }
      }

break;

case  'content':

$o['info']['contents'][] = $options;

break;

case  'annot':

// add an annotation to this page
      if  (!isset($o['info']['annot'])) {

$o['info']['annot'] = array();
      }

// $options should contain the id of the annotation dictionary
      $o['info']['annot'][] = $options;

break;

case  'out':

$res = "\n".$id." 0 obj\n<< /Type /Page";

$res.= "\n/Parent ".$o['info']['parent']." 0 R";

if  (isset($o['info']['annot'])) {

$res.= "\n/Annots [";

foreach($o['info']['annot'] as  $aId) {

$res.= " ".$aId." 0 R";
        }

$res.= " ]";
      }

$count =  count($o['info']['contents']);

if  ($count == 1) {

$res.= "\n/Contents ".$o['info']['contents'][0]." 0 R";
      } else  if  ($count>1) {

$res.= "\n/Contents [\n";

// reverse the page contents so added objects are below normal content
        //foreach (array_reverse($o['info']['contents']) as  $cId) {

// Back to normal now that I've got transparency working --Benj
        foreach ($o['info']['contents'] as  $cId) {
          $res.= $cId." 0 R\n";
        }

$res.= "]";
      }

$res.= "\n>>\nendobj";

return  $res;

break;
    }
  }

/**
   * the contents objects hold all of the content which appears on pages
   */
  function  o_contents($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch  ($action) {

case  'new':

$this->objects[$id] = array('t'=>'contents', 'c'=>'', 'info'=>array());

if  (strlen($options) &&  intval($options)) {

// then this contents is the primary for a page
        $this->objects[$id]['onPage'] = $options;
      } else  if  ($options == 'raw') {

// then this page contains some other type of system object
        $this->objects[$id]['raw'] = 1;
      }

break;

case  'add':

// add more options to the decleration
      foreach ($options as  $k=>$v) {

$o['info'][$k] = $v;
      }

case  'out':

$tmp = $o['c'];

$res =  "\n".$id." 0 obj\n";

if  (isset($this->objects[$id]['raw'])) {

$res.= $tmp;
      } else {

$res.= "<<";

if  (function_exists('gzcompress') &&  $this->options['compression']) {

// then implement ZLIB based compression on this content stream
          $res.= " /Filter /FlateDecode";

$tmp =  gzcompress($tmp,  6);
        }

if  ($this->encrypted) {

$this->encryptInit($id);

$tmp =  $this->ARC4($tmp);
        }

foreach($o['info'] as  $k=>$v) {

$res.=  "\n/".$k.' '.$v;
        }

$res.= "\n/Length ".strlen($tmp) ." >>\nstream\n".$tmp."\nendstream";
      }

$res.= "\nendobj\n";

return  $res;

break;
    }
  }

/**
   * an image object, will be an XObject in the document, includes description and data
   */
  function  o_image($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch ($action) {

case  'new':

// make the new object
      $this->objects[$id] = array('t'=>'image', 'data'=>&$options['data'], 'info'=>array());

$this->objects[$id]['info']['Type'] = '/XObject';

$this->objects[$id]['info']['Subtype'] = '/Image';

$this->objects[$id]['info']['Width'] = $options['iw'];

$this->objects[$id]['info']['Height'] = $options['ih'];

if  (!isset($options['type']) ||  $options['type'] == 'jpg') {

if  (!isset($options['channels'])) {

$options['channels'] = 3;
        }

switch ($options['channels']) {

case  1:

$this->objects[$id]['info']['ColorSpace'] = '/DeviceGray';

break;

default:

$this->objects[$id]['info']['ColorSpace'] = '/DeviceRGB';

break;
        }

$this->objects[$id]['info']['Filter'] = '/DCTDecode';

$this->objects[$id]['info']['BitsPerComponent'] = 8;
      } else  if  ($options['type'] == 'png') {
        
        $this->objects[$id]['info']['Filter'] = '/FlateDecode';

$this->objects[$id]['info']['DecodeParms'] = '<< /Predictor 15 /Colors '.$options['ncolor'].' /Columns '.$options['iw'].' /BitsPerComponent '.$options['bitsPerComponent'].'>>';
 if (strlen($options['pdata'])) {

$tmp =  ' [ /Indexed /DeviceRGB '.(strlen($options['pdata']) /3-1) .' ';

$this->numObj++;

$this->o_contents($this->numObj, 'new');

$this->objects[$this->numObj]['c'] = $options['pdata'];

$tmp.= $this->numObj.' 0 R';

$tmp.= ' ]';

$this->objects[$id]['info']['ColorSpace'] =  $tmp;

if  (isset($options['transparency'])) {

switch ($options['transparency']['type']) {

case  'indexed':

$tmp = ' [ '.$options['transparency']['data'].' '.$options['transparency']['data'].'] ';

$this->objects[$id]['info']['Mask'] =  $tmp;

break;

case 'color-key':
              $tmp = ' [ '.
                $options['transparency']['r'] . ' ' . $options['transparency']['r'] .
                $options['transparency']['g'] . ' ' . $options['transparency']['g'] .
                $options['transparency']['b'] . ' ' . $options['transparency']['b'] .
                ' ] ';
              $this->objects[$id]['info']['Mask'] = $tmp;
              pre_r($tmp);
              break;
                
            }
          }
        } else {

if  (isset($options['transparency'])) {

switch ($options['transparency']['type']) {

case  'indexed':

$tmp = ' [ '.$options['transparency']['data'].' '.$options['transparency']['data'].'] ';

$this->objects[$id]['info']['Mask'] =  $tmp;

break;

case 'color-key':
              $tmp = ' [ '.
                $options['transparency']['r'] . ' ' . $options['transparency']['r'] . ' ' .
                $options['transparency']['g'] . ' ' . $options['transparency']['g'] . ' ' .
                $options['transparency']['b'] . ' ' . $options['transparency']['b'] .
                ' ] ';
              $this->objects[$id]['info']['Mask'] = $tmp;
              break;
                
            }
          }
          $this->objects[$id]['info']['ColorSpace'] = '/'.$options['color'];
        }

$this->objects[$id]['info']['BitsPerComponent'] = $options['bitsPerComponent'];
      }

// assign it a place in the named resource dictionary as an external object, according to
      // the label passed in with it.
      $this->o_pages($this->currentNode, 'xObject', array('label'=>$options['label'], 'objNum'=>$id));

// also make sure that we have the right procset object for it.
      $this->o_procset($this->procsetObjectId, 'add', 'ImageC');

break;

case  'out':

$tmp = &$o['data'];

$res = "\n".$id." 0 obj\n<<";

foreach($o['info'] as  $k=>$v) {

$res.= "\n/".$k.' '.$v;
      }

if  ($this->encrypted) {

$this->encryptInit($id);

$tmp =  $this->ARC4($tmp);
      }

$res.= "\n/Length ".strlen($tmp) ." >>\nstream\n".$tmp."\nendstream\nendobj\n";

return  $res;

break;
    }
  }

/**
   * graphics state object
   */
  function  o_extGState($id,  $action,  $options = "") {

static  $valid_params =  array("LW",  "LC",  "LC",  "LJ",  "ML",
                                   "D",  "RI",  "OP",  "op",  "OPM",
                                   "Font",  "BG",  "BG2",  "UCR",
                                   "TR",  "TR2",  "HT",  "FL",
                                   "SM",  "SA",  "BM",  "SMask",
                                   "CA",  "ca",  "AIS",  "TK");

if  ( $action !=  "new") {
      $o = & $this->objects[$id];
    }

switch  ($action) {

case  "new":
      $this->objects[$id] =  array('t' => 'extGState',  'info' => $options);

// Tell the pages about the new resource
      $this->numStates++;
      $this->o_pages($this->currentNode,  'extGState',  array("objNum" => $id,  "stateNum" => $this->numStates));
      break;

case "out":
 $res =
 "\n" . $id . " 0 obj\n".
 "<< /Type /ExtGState\n";

foreach ($o["info"] as  $parameter => $value) {
        if  ( !in_array($parameter,  $valid_params))
          continue;
        $res.=  "/$parameter $value\n";
      }

$res.=
        ">>\n".
        "endobj";

return  $res;
    }
  }

/**
   * encryption object.
   */
  function  o_encryption($id, $action, $options = '') {

if  ($action != 'new') {

$o = & $this->objects[$id];
    }

switch ($action) {

case  'new':

// make the new object
      $this->objects[$id] = array('t'=>'encryption', 'info'=>$options);

$this->arc4_objnum = $id;

// figure out the additional paramaters required
      $pad =  chr(0x28) .chr(0xBF) .chr(0x4E) .chr(0x5E) .chr(0x4E) .chr(0x75) .chr(0x8A) .chr(0x41) .chr(0x64) .chr(0x00) .chr(0x4E) .chr(0x56) .chr(0xFF) .chr(0xFA) .chr(0x01) .chr(0x08) .chr(0x2E) .chr(0x2E) .chr(0x00) .chr(0xB6) .chr(0xD0) .chr(0x68) .chr(0x3E) .chr(0x80) .chr(0x2F) .chr(0x0C) .chr(0xA9) .chr(0xFE) .chr(0x64) .chr(0x53) .chr(0x69) .chr(0x7A);

$len =  strlen($options['owner']);

if  ($len>32) {

$owner = substr($options['owner'], 0, 32);
 } else if ($len<32) {

$owner =  $options['owner'].substr($pad, 0, 32-$len);
      } else {

$owner =  $options['owner'];
      }

$len =  strlen($options['user']);

if  ($len>32) {

$user = substr($options['user'], 0, 32);
 } else if ($len<32) {

$user =  $options['user'].substr($pad, 0, 32-$len);
      } else {

$user =  $options['user'];
      }

$tmp =  $this->md5_16($owner);

$okey =  substr($tmp, 0, 5);

$this->ARC4_init($okey);

$ovalue = $this->ARC4($user);

$this->objects[$id]['info']['O'] = $ovalue;

// now make the u value, phew.
      $tmp =  $this->md5_16($user.$ovalue.chr($options['p']) .chr(255) .chr(255) .chr(255) .$this->fileIdentifier);

$ukey =  substr($tmp, 0, 5);

$this->ARC4_init($ukey);

$this->encryptionKey =  $ukey;

$this->encrypted = 1;

$uvalue = $this->ARC4($pad);

$this->objects[$id]['info']['U'] = $uvalue;

$this->encryptionKey = $ukey;

// initialize the arc4 array
      break;

case  'out':

$res = "\n".$id." 0 obj\n<<";

$res.= "\n/Filter /Standard";

$res.= "\n/V 1";

$res.= "\n/R 2";

$res.= "\n/O (".$this->filterText($o['info']['O']) .')';

$res.= "\n/U (".$this->filterText($o['info']['U']) .')';

// and the p-value needs to be converted to account for the twos-complement approach
      $o['info']['p'] =  (($o['info']['p']^255) +1) *-1;

$res.= "\n/P ".($o['info']['p']);

$res.= "\n>>\nendobj\n";

return  $res;

break;
    }
  }

/**
   * ARC4 functions
   * A series of function to implement ARC4 encoding in PHP
   */

/**
   * calculate the 16 byte version of the 128 bit md5 digest of the string
   */
  function  md5_16($string) {

$tmp =  md5($string);

$out = '';

for ($i = 0;$i <= 30;$i = $i+2) {

$out.= chr(hexdec(substr($tmp, $i, 2)));
    }

return  $out;
  }

/**
   * initialize the encryption for processing a particular object
   */
  function  encryptInit($id) {

$tmp =  $this->encryptionKey;

$hex =  dechex($id);

if (strlen($hex) <6) {

$hex =  substr('000000', 0, 6-strlen($hex)) .$hex;
    }

$tmp.=  chr(hexdec(substr($hex, 4, 2))) .chr(hexdec(substr($hex, 2, 2))) .chr(hexdec(substr($hex, 0, 2))) .chr(0) .chr(0);

$key =  $this->md5_16($tmp);

$this->ARC4_init(substr($key, 0, 10));
  }

/**
   * initialize the ARC4 encryption
   */
  function  ARC4_init($key = '') {

$this->arc4 =  '';

// setup the control array
    if  (strlen($key) == 0) {

return;
    }

$k =  '';

while (strlen($k) <256) {

$k.= $key;
    }

$k = substr($k, 0, 256);

for ($i = 0;$i<256;$i++) {

$this->arc4.=  chr($i);
    }

$j = 0;

for ($i = 0;$i<256;$i++) {

$t =  $this->arc4[$i];

$j =  ($j + ord($t)  + ord($k[$i])) %256;

$this->arc4[$i] = $this->arc4[$j];

$this->arc4[$j] = $t;
    }
  }

/**
   * ARC4 encrypt a text string
   */
  function  ARC4($text) {

$len = strlen($text);

$a = 0;

$b = 0;

$c =  $this->arc4;

$out = '';

for ($i = 0;$i<$len;$i++) {

$a =  ($a+1) %256;

$t =  $c[$a];

$b =  ($b+ord($t)) %256;

$c[$a] = $c[$b];

$c[$b] = $t;

$k =  ord($c[(ord($c[$a]) +ord($c[$b])) %256]);

$out.= chr(ord($text[$i])  ^ $k);
    }

return  $out;
  }

/**
   * functions which can be called to adjust or add to the document
   */

/**
   * add a link in the document to an external URL
   */
  function  addLink($url, $x0, $y0, $x1, $y1) {

$this->numObj++;

$info =  array('type'=>'link', 'url'=>$url, 'rect'=>array($x0, $y0, $x1, $y1));

$this->o_annotation($this->numObj, 'new', $info);
  }

/**
   * add a link in the document to an internal destination (ie. within the document)
   */
  function  addInternalLink($label, $x0, $y0, $x1, $y1) {

$this->numObj++;

$info =  array('type'=>'ilink', 'label'=>$label, 'rect'=>array($x0, $y0, $x1, $y1));

$this->o_annotation($this->numObj, 'new', $info);
  }

/**
   * set the encryption of the document
   * can be used to turn it on and/or set the passwords which it will have.
   * also the functions that the user will have are set here, such as print, modify, add
   */
  function  setEncryption($userPass = '', $ownerPass = '', $pc = array()) {

$p = bindec(11000000);

$options =  array(
                      'print'=>4, 'modify'=>8, 'copy'=>16, 'add'=>32);

foreach($pc as  $k=>$v) {

if  ($v &&  isset($options[$k])) {

$p+= $options[$k];
      } else  if  (isset($options[$v])) {

$p+= $options[$v];
      }
    }

// implement encryption on the document
    if  ($this->arc4_objnum ==  0) {

// then the block does not exist already, add it.
      $this->numObj++;

if  (strlen($ownerPass) == 0) {

$ownerPass = $userPass;
      }

$this->o_encryption($this->numObj, 'new', array('user'=>$userPass, 'owner'=>$ownerPass, 'p'=>$p));
    }
  }

/**
   * should be used for internal checks, not implemented as yet
   */
  function  checkAllHere() {
  }

/**
   * return the pdf stream as a string returned from the function
   */
  function  output($debug = 0) {

if  ($debug) {

// turn compression off
      $this->options['compression'] = 0;
    }

if  ($this->arc4_objnum) {

$this->ARC4_init($this->encryptionKey);
    }

$this->checkAllHere();

$xref = array();

$content = "%PDF-1.3\n%����\n";

//  $content="%PDF-1.3\n";
    $pos = strlen($content);

foreach($this->objects as  $k=>$v) {

$tmp = 'o_'.$v['t'];

$cont = $this->$tmp($k, 'out');

$content.= $cont;

$xref[] = $pos;

$pos+= strlen($cont);
    }

$content.= "\nxref\n0 ".(count($xref) +1) ."\n0000000000 65535 f \n";

foreach($xref as  $p) {

$content.= str_pad($p,  10,  "0",  STR_PAD_LEFT)  . " 00000 n \n";
    }

$content.= "trailer\n<<\n/Size ".(count($xref) +1) ."\n/Root 1 0 R\n/Info ".$this->infoObject." 0 R\n";

// if encryption has been applied to this document then add the marker for this dictionary
    if  ($this->arc4_objnum > 0) {

$content.=  "/Encrypt ".$this->arc4_objnum." 0 R\n";
    }

if  (strlen($this->fileIdentifier)) {

$content.= "/ID[<".$this->fileIdentifier."><".$this->fileIdentifier.">]\n";
 }

$content.=  ">>\nstartxref\n".$pos."\n%%EOF\n";

return  $content;
  }

/**
   * intialize a new document
   * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
   * this function is called automatically by the constructor function
   *
   * @access private
   */
  function  newDocument($pageSize = array(0, 0, 612, 792)) {

$this->numObj = 0;

$this->objects =  array();

$this->numObj++;

$this->o_catalog($this->numObj, 'new');

$this->numObj++;

$this->o_outlines($this->numObj, 'new');

$this->numObj++;

$this->o_pages($this->numObj, 'new');

$this->o_pages($this->numObj, 'mediaBox', $pageSize);

$this->currentNode =  3;

$this->numObj++;

$this->o_procset($this->numObj, 'new');

$this->numObj++;

$this->o_info($this->numObj, 'new');

$this->numObj++;

$this->o_page($this->numObj, 'new');

// need to store the first page id as there is no way to get it to the user during
    // startup
    $this->firstPageId =  $this->currentContents;
  }

/**
   * open the font file and return a php structure containing it.
   * first check if this one has been done before and saved in a form more suited to php
   * note that if a php serialized version does not exist it will try and make one, but will
   * require write access to the directory to do it... it is MUCH faster to have these serialized
   * files.
   *
   * @access private
   */
  function  openFont($font) {

// assume that $font contains both the path and perhaps the extension to the file, split them
    $pos = strrpos($font, '/');

if  ($pos === false) {

$dir =  './';

$name =  $font;
    } else {

$dir = substr($font, 0, $pos+1);

$name = substr($font, $pos+1);
    }

if  (substr($name, -4) == '.afm') {

$name = substr($name, 0, strlen($name) -4);
    }

$this->addMessage('openFont: '.$font.' - '.$name);

if  (file_exists($dir . 'php_' . $name . '.afm')) {

$this->addMessage('openFont: php file exists ' . $dir . 'php_' . $name.'.afm');

$tmp =  file_get_contents($dir.'php_'.$name.'.afm');

eval($tmp);

if (!isset($this->fonts[$font]['_version_']) || $this->fonts[$font]['_version_']<1) {

// if the font file is old, then clear it out and prepare for re-creation
        $this->addMessage('openFont: clear out, make way for new version.');

unset($this->fonts[$font]);
      }
    }

if  (!isset($this->fonts[$font]) &&  file_exists($dir.$name.'.afm')) {

// then rebuild the php_.afm file from the .afm file
 $this->addMessage('openFont: build php file from '.$dir.$name.'.afm');

$data =  array();

$file =  file($dir.$name.'.afm');

foreach ($file as  $rowA) {

$row = trim($rowA);

$pos = strpos($row, ' ');

if  ($pos) {

// then there must be some keyword
          $key =  substr($row, 0, $pos);

switch  ($key) {

case  'FontName':

case  'FullName':

case  'FamilyName':

case  'Weight':

case  'ItalicAngle':

case  'IsFixedPitch':

case  'CharacterSet':

case  'UnderlinePosition':

case  'UnderlineThickness':

case  'Version':

case  'EncodingScheme':

case  'CapHeight':

case  'XHeight':

case  'Ascender':

case  'Descender':

case  'StdHW':

case  'StdVW':

case  'StartCharMetrics':

$data[$key] = trim(substr($row, $pos));

break;

case  'FontBBox':

$data[$key] = explode(' ', trim(substr($row, $pos)));

break;

case  'C':

//C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
            $bits = explode(';', trim($row));

$dtmp = array();

foreach($bits as  $bit) {

$bits2 =  explode(' ', trim($bit));

if  (strlen($bits2[0])) {

if  (count($bits2) >2) {

$dtmp[$bits2[0]] = array();

for ($i = 1;$i<count($bits2);$i++) {

$dtmp[$bits2[0]][] = $bits2[$i];
                  }
                } else  if  (count($bits2) == 2) {

$dtmp[$bits2[0]] = $bits2[1];
                }
              }
            }

if  ($dtmp['C'] >= 0) {

$data['C'][$dtmp['C']] = $dtmp;

$data['C'][$dtmp['N']] = $dtmp;
            } else {

$data['C'][$dtmp['N']] = $dtmp;
            }

break;

case  'KPX':

//KPX Adieresis yacute -40
            $bits = explode(' ', trim($row));

$data['KPX'][$bits[1]][$bits[2]] = $bits[3];

break;
          }
        }
      }

$data['_version_'] = 1;

$this->fonts[$font] = $data;

file_put_contents($dir . 'php_' . $name . '.afm',  '$this->fonts[$font]=' . var_export($data,  true)  . ';');
    } else  if  (!isset($this->fonts[$font])) {

$this->addMessage('openFont: no font file found');

//    echo 'Font not Found '.$font;

}
  }

/**
   * if the font is not loaded then load it and make the required object
   * else just make it the current font
   * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding'
   * note that encoding='none' will need to be used for symbolic fonts
   * and 'differences' => an array of mappings between numbers 0->255 and character names.
   *
   */
  function  selectFont($fontName, $encoding =  '', $set =  1) {

if  (!isset($this->fonts[$fontName])) {

// load the file
      $this->openFont($fontName);

if  (isset($this->fonts[$fontName])) {

$this->numObj++;

$this->numFonts++;

//$this->numFonts = md5($fontName);
        $pos =  strrpos($fontName, '/');

//      $dir = substr($fontName,0,$pos+1);
        $name =  substr($fontName, $pos+1);

if  (substr($name, -4) ==  '.afm') {

$name =  substr($name, 0, strlen($name) -4);
        }

$options =  array('name' => $name);

if  (is_array($encoding)) {

// then encoding and differences might be set
          if  (isset($encoding['encoding'])) {

$options['encoding'] =  $encoding['encoding'];
          }

if  (isset($encoding['differences'])) {

$options['differences'] =  $encoding['differences'];
          }
        } else  if  (strlen($encoding)) {

// then perhaps only the encoding has been set
          $options['encoding'] =  $encoding;
        }

$fontObj =  $this->numObj;

$this->o_font($this->numObj, 'new', $options);

$this->fonts[$fontName]['fontNum'] =  $this->numFonts;

// if this is a '.afm' font, and there is a '.pfa' file to go with it ( as there
        // should be for all non-basic fonts), then load it into an object and put the
        // references into the font object
        $basefile =  substr($fontName, 0, strlen($fontName) -4);

if  (file_exists($basefile.'.pfb')) {

$fbtype =  'pfb';
        } else  if  (file_exists($basefile.'.ttf')) {

$fbtype =  'ttf';
        } else {

$fbtype =  '';
        }

$fbfile =  $basefile.'.'.$fbtype;

//      $pfbfile = substr($fontName,0,strlen($fontName)-4).'.pfb';
        //      $ttffile = substr($fontName,0,strlen($fontName)-4).'.ttf';
        $this->addMessage('selectFont: checking for - '.$fbfile);

if  (substr($fontName, -4) ==  '.afm' &&  strlen($fbtype)) {

$adobeFontName =  $this->fonts[$fontName]['FontName'];

//        $fontObj = $this->numObj;
          $this->addMessage('selectFont: adding font file - '.$fbfile.' - '.$adobeFontName);

// find the array of fond widths, and put that into an object.
          $firstChar =  -1;

$lastChar =  0;

$widths =  array();

foreach ($this->fonts[$fontName]['C'] as  $num => $d) {

if  (intval($num) >0 ||  $num ==  '0') {

if  ($lastChar>0 &&  $num>$lastChar+1) {

for ($i = $lastChar+1;$i<$num;$i++) {

$widths[] =  0;
                }
              }

$widths[] =  $d['WX'];

if  ($firstChar ==  -1) {

$firstChar =  $num;
              }

$lastChar =  $num;
            }
          }

// also need to adjust the widths for the differences array
          if  (isset($options['differences'])) {

foreach($options['differences'] as  $charNum => $charName) {

if  ($charNum > $lastChar) {

for ($i = $lastChar + 1; $i <= $charNum; $i++) {

$widths[] =  0;
                }

$lastChar =  $charNum;
              }

if  (isset($this->fonts[$fontName]['C'][$charName])) {

$widths[$charNum-$firstChar] =  $this->fonts[$fontName]['C'][$charName]['WX'];
              }
            }
          }

$this->addMessage('selectFont: FirstChar = '.$firstChar);

$this->addMessage('selectFont: LastChar = '.$lastChar);

$this->numObj++;

$this->o_contents($this->numObj, 'new', 'raw');

$this->objects[$this->numObj]['c'].=  '[';

foreach($widths as  $width) {

$this->objects[$this->numObj]['c'].=  ' '.$width;
          }

$this->objects[$this->numObj]['c'].=  ' ]';

$widthid =  $this->numObj;

// load the pfb file, and put that into an object too.
          // note that pdf supports only binary format type 1 font files, though there is a
          // simple utility to convert them from pfa to pfb.
          $tmp =  get_magic_quotes_runtime();

set_magic_quotes_runtime(0);

$data =  file_get_contents($fbfile);

set_magic_quotes_runtime($tmp);

// create the font descriptor
          $this->numObj++;

$fontDescriptorId =  $this->numObj;

$this->numObj++;

$pfbid =  $this->numObj;

// determine flags (more than a little flakey, hopefully will not matter much)
          $flags =  0;

if  ($this->fonts[$fontName]['ItalicAngle'] !=  0) {
            $flags+=  pow(2, 6);
          }

if  ($this->fonts[$fontName]['IsFixedPitch'] ==  'true') {
            $flags+=  1;
          }

$flags+=  pow(2, 5);
          // assume non-sybolic

$list =  array('Ascent' => 'Ascender', 'CapHeight' => 'CapHeight', 'Descent' => 'Descender', 'FontBBox' => 'FontBBox', 'ItalicAngle' => 'ItalicAngle');

$fdopt =  array(
                          'Flags' => $flags, 'FontName' => $adobeFontName, 'StemV' => 100  // don't know what the value for this should be!
                          );

foreach($list as  $k => $v) {

if  (isset($this->fonts[$fontName][$v])) {

$fdopt[$k] =  $this->fonts[$fontName][$v];
            }
          }

if  ($fbtype ==  'pfb') {

$fdopt['FontFile'] =  $pfbid;
          } else  if  ($fbtype ==  'ttf') {

$fdopt['FontFile2'] =  $pfbid;
          }

$this->o_fontDescriptor($fontDescriptorId, 'new', $fdopt);

// embed the font program
          $this->o_contents($this->numObj, 'new');

$this->objects[$pfbid]['c'].=  $data;

// determine the cruicial lengths within this file
          if  ($fbtype ==  'pfb') {

$l1 =  strpos($data, 'eexec') +6;

$l2 =  strpos($data, '00000000') -$l1;

$l3 =  strlen($data) -$l2-$l1;

$this->o_contents($this->numObj, 'add', array('Length1' => $l1, 'Length2' => $l2, 'Length3' => $l3));
          } else  if  ($fbtype ==  'ttf') {

$l1 =  strlen($data);

$this->o_contents($this->numObj, 'add', array('Length1' => $l1));
          }

// tell the font object about all this new stuff
          $tmp =  array('BaseFont' => $adobeFontName, 'Widths' => $widthid, 'FirstChar' => $firstChar, 'LastChar' => $lastChar, 'FontDescriptor' => $fontDescriptorId);

if  ($fbtype ==  'ttf') {

$tmp['SubType'] =  'TrueType';
          }

$this->addMessage('adding extra info to font.('.$fontObj.')');

foreach($tmp as  $fk => $fv) {

$this->addMessage($fk." : ".$fv);
          }

$this->o_font($fontObj, 'add', $tmp);
        } else {

$this->addMessage('selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts');
        }

// also set the differences here, note that this means that these will take effect only the
        //first time that a font is selected, else they are ignored
        if  (isset($options['differences'])) {

$this->fonts[$fontName]['differences'] =  $options['differences'];
        }
      }
    }

if  ($set &&  isset($this->fonts[$fontName])) {

// so if for some reason the font was not set in the last one then it will not be selected
      $this->currentBaseFont =  $fontName;

// the next lines mean that if a new font is selected, then the current text state will be
      // applied to it as well.
      $this->currentFont =  $this->currentBaseFont;

$this->currentFontNum =  $this->fonts[$this->currentFont]['fontNum'];

//$this->setCurrentFont();

}

return  $this->currentFontNum;

//return $this->numObj;

}

/**
   * sets up the current font, based on the font families, and the current text state
   * note that this system is quite flexible, a bold-italic font can be completely different to a
   * italic-bold font, and even bold-bold will have to be defined within the family to have meaning
   * This function is to be called whenever the currentTextState is changed, it will update
   * the currentFont setting to whatever the appropriatte family one is.
   * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
   * This function will change the currentFont to whatever it should be, but will not change the
   * currentBaseFont.
   *
   * @access private
   */
  function  setCurrentFont() {

//   if (strlen($this->currentBaseFont) == 0){
    //     // then assume an initial font
    //     $this->selectFont('./fonts/Helvetica.afm');
    //   }
    //   $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1);
    //   if (strlen($this->currentTextState)
    //     && isset($this->fontFamilies[$cf])
    //       && isset($this->fontFamilies[$cf][$this->currentTextState])){
    //     // then we are in some state or another
    //     // and this font has a family, and the current setting exists within it
    //     // select the font, then return it
    //     $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState];
    //     $this->selectFont($nf,'',0);
    //     $this->currentFont = $nf;
    //     $this->currentFontNum = $this->fonts[$nf]['fontNum'];
    //   } else {
    //     // the this font must not have the right family member for the current state
    //     // simply assume the base font
    $this->currentFont =  $this->currentBaseFont;

$this->currentFontNum =  $this->fonts[$this->currentFont]['fontNum'];

//  }

}

/**
   * function for the user to find out what the ID is of the first page that was created during
   * startup - useful if they wish to add something to it later.
   */
  function  getFirstPageId() {

return  $this->firstPageId;
  }

/**
   * add content to the currently active object
   *
   * @access private
   */
  function  addContent($content) {

$this->objects[$this->currentContents]['c'].=  $content;
  }

/**
   * sets the colour for fill operations
   */
  function  setColor($r, $g, $b, $force =  0) {

if  ($r >=  0 &&  ($force ||  $r !=  $this->currentColour['r'] ||  $g !=  $this->currentColour['g'] ||  $b !=  $this->currentColour['b'])) {

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $r) .' '.sprintf('%.3f', $g) .' '.sprintf('%.3f', $b) .' rg';

$this->currentColour =  array('r' => $r, 'g' => $g, 'b' => $b);
    }
  }

/**
   * sets the colour for stroke operations
   */
  function  setStrokeColor($r, $g, $b, $force =  0) {

if  ($r >=  0 &&  ($force ||  $r !=  $this->currentStrokeColour['r'] ||  $g !=  $this->currentStrokeColour['g'] ||  $b !=  $this->currentStrokeColour['b'])) {

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $r) .' '.sprintf('%.3f', $g) .' '.sprintf('%.3f', $b) .' RG';

$this->currentStrokeColour =  array('r' => $r, 'g' => $g, 'b' => $b);
    }
  }

/**
   * Set the graphics state for compositions
   */
  function  setGraphicsState($parameters) {

// Create a new graphics state object
    // FIXME: should actually keep track of states that have already been created...
    $this->numObj++;

$this->o_extGState($this->numObj,  'new',  $parameters);

$this->objects[ $this->currentContents ]['c'].=  "\n/GS" . $this->numStates . " gs";
  }

/**
   * Set current blend mode & opacity for lines.
   *
   * Valid blend modes are:
   *
   * Normal, Multiply, Screen, Overlay, Darken, Lighten,
   * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
   * Exclusion
   *
   * @param string $mode the blend mode to use
   * @param float $opacity 0.0 fully transparent, 1.0 fully opaque
   */
  function setLineTransparency($mode, $opacity) {
    static $blend_modes = array("Normal", "Multiply", "Screen",
                                "Overlay", "Darken", "Lighten",
                                "ColorDogde", "ColorBurn", "HardLight",
                                "SoftLight", "Difference", "Exclusion");

if ( !in_array($mode, $blend_modes) )
      $mode = "Normal";
    
    // Only create a new graphics state if required
    if ( $mode == $this->currentLineTransparency["mode"]  &&
         $opacity == $this->currentLineTransparency["opacity"] )
      return;

$options = array("BM" => "/$mode",
                     "CA" => (float)$opacity);

$this->setGraphicsState($options);
  }
  
  /**
   * Set current blend mode & opacity for filled objects.
   *
   * Valid blend modes are:
   *
   * Normal, Multiply, Screen, Overlay, Darken, Lighten,
   * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
   * Exclusion
   *
   * @param string $mode the blend mode to use
   * @param float $opacity 0.0 fully transparent, 1.0 fully opaque   
   */
  function setFillTransparency($mode, $opacity) {
    static $blend_modes = array("Normal", "Multiply", "Screen",
                                "Overlay", "Darken", "Lighten",
                                "ColorDogde", "ColorBurn", "HardLight",
                                "SoftLight", "Difference", "Exclusion");

if ( !in_array($mode, $blend_modes) )
      $mode = "Normal";

if ( $mode == $this->currentFillTransparency["mode"]  &&
         $opacity == $this->currentFillTransparency["opacity"] )
      return;

$options = array("BM" => "/$mode",
                     "ca" => (float)$opacity);
    
    $this->setGraphicsState($options);
  }

/**
   * draw a line from one set of coordinates to another
   */
  function  line($x1, $y1, $x2, $y2) {

$this->objects[$this->currentContents]['c'] .=
      "\n".sprintf('%.3f', $x1) .' '.sprintf('%.3f', $y1) .' m '.sprintf('%.3f', $x2) .' '.sprintf('%.3f', $y2) .' l S';
  }

/**
   * draw a bezier curve based on 4 control points
   */
  function  curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3) {

// in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
    // as the control points for the curve.
    $this->objects[$this->currentContents]['c'] .=
      "\n".sprintf('%.3f', $x0) .' '.sprintf('%.3f', $y0) .' m '.sprintf('%.3f', $x1) .' '.sprintf('%.3f', $y1);

$this->objects[$this->currentContents]['c'] .=
      ' '.sprintf('%.3f', $x2) .' '.sprintf('%.3f', $y2) .' '.sprintf('%.3f', $x3) .' '.sprintf('%.3f', $y3) .' c S';
  }

/**
   * draw a part of an ellipse
   */
  function  partEllipse($x0, $y0, $astart, $afinish, $r1, $r2 =  0, $angle =  0, $nSeg =  8) {

$this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, 0);
  }

/**
   * draw a filled ellipse
   */
  function  filledEllipse($x0, $y0, $r1, $r2 =  0, $angle =  0, $nSeg =  8, $astart =  0, $afinish =  360) {

return  $this->ellipse($x0, $y0, $r1, $r2 =  0, $angle, $nSeg, $astart, $afinish, 1, 1);
  }

/**
   * draw an ellipse
   * note that the part and filled ellipse are just special cases of this function
   *
   * draws an ellipse in the current line style
   * centered at $x0,$y0, radii $r1,$r2
   * if $r2 is not set, then a circle is drawn
   * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
   * pretty crappy shape at 2, as we are approximating with bezier curves.
   */
  function  ellipse($x0, $y0, $r1, $r2 =  0, $angle =  0, $nSeg =  8, $astart =  0, $afinish =  360, $close =  1, $fill =  0) {

if  ($r1 ==  0) {
      return;
    }

if  ($r2 ==  0) {
      $r2 =  $r1;
    }

if ($nSeg < 2) {
 $nSeg = 2;
 }

$astart =  deg2rad((float)$astart);

$afinish =  deg2rad((float)$afinish);

$totalAngle = $afinish-$astart;

$dt =  $totalAngle/$nSeg;

$dtm =  $dt/3;

if  ($angle !=  0) {

$a =  -1*deg2rad((float)$angle);

$tmp  =  "\n q ";
      $tmp .=  sprintf('%.3f', cos($a)) .' '.sprintf('%.3f', (-1.0*sin($a))) .' '.sprintf('%.3f', sin($a)) .' '.sprintf('%.3f', cos($a)) .' ';
      $tmp .=  sprintf('%.3f', $x0) .' '.sprintf('%.3f', $y0) .' cm';

$this->objects[$this->currentContents]['c'].=  $tmp;

$x0 =  0;
      $y0 =  0;
    }

$t1 =  $astart;
    $a0 =  $x0 + $r1*cos($t1);
    $b0 =  $y0 + $r2*sin($t1);
    $c0 =  -$r1 * sin($t1);
    $d0 =  $r2 * cos($t1);

$this->objects[$this->currentContents]['c'] .=  "\n".sprintf('%.3f', $a0) .' '.sprintf('%.3f', $b0) .' m ';

for ($i = 1; $i <= $nSeg; $i++) {

// draw this bit of the total curve
      $t1 =  $i * $dt + $astart;

$a1 =  $x0 + $r1 * cos($t1);

$b1 =  $y0 + $r2 * sin($t1);

$c1 = -$r1 * sin($t1);

$d1 =  $r2 * cos($t1);

$this->objects[$this->currentContents]['c']
        .=  "\n".sprintf('%.3f', ($a0+$c0*$dtm)) .' '.sprintf('%.3f', ($b0 + $d0 * $dtm));

$this->objects[$this->currentContents]['c'] .=
        ' '.sprintf('%.3f', ($a1-$c1*$dtm)) .' '.sprintf('%.3f', ($b1-$d1*$dtm)) .' '.sprintf('%.3f', $a1) .' '.sprintf('%.3f', $b1) .' c';

$a0 =  $a1;

$b0 =  $b1;

$c0 =  $c1;

$d0 =  $d1;
    }

if  ($fill) {
      $this->objects[$this->currentContents]['c'].=  ' f';

} else if ($close) {

$this->objects[$this->currentContents]['c'].=  ' s';
        // small 's' signifies closing the path as well

} else {

$this->objects[$this->currentContents]['c'].=  ' S';

}

if  ($angle !=  0) {
      $this->objects[$this->currentContents]['c'].=  ' Q';
    }

}

/**
   * this sets the line drawing style.
   * width, is the thickness of the line in user units
   * cap is the type of cap to put on the line, values can be 'butt','round','square'
   *    where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the
   *    end of the line.
   * join can be 'miter', 'round', 'bevel'
   * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
   *   on and off dashes.
   *   (2) represents 2 on, 2 off, 2 on , 2 off ...
   *   (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
   * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
   */
  function  setLineStyle($width =  1, $cap =  '', $join =  '', $dash =  '', $phase =  0) {

// this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
    $string =  '';

if  ($width>0) {

$string.=  $width.' w';
    }

$ca =  array('butt' => 0, 'round' => 1, 'square' => 2);

if  (isset($ca[$cap])) {

$string.=  ' '.$ca[$cap].' J';
    }

$ja =  array('miter' => 0, 'round' => 1, 'bevel' => 2);

if  (isset($ja[$join])) {

$string.=  ' '.$ja[$join].' j';
    }

if  (is_array($dash)) {

$string.=  ' [';

foreach ($dash as  $len) {

$string.=  ' '.$len;
      }

$string.=  ' ] '.$phase.' d';
    }

$this->currentLineStyle =  $string;

$this->objects[$this->currentContents]['c'].=  "\n".$string;
  }

/**
   * draw a polygon, the syntax for this is similar to the GD polygon command
   */
  function  polygon($p, $np, $f =  0) {

$this->objects[$this->currentContents]['c'].=  "\n";

$this->objects[$this->currentContents]['c'].=  sprintf('%.3f', $p[0]) .' '.sprintf('%.3f', $p[1]) .' m ';

for ($i = 2; $i < $np * 2; $i = $i + 2) {

$this->objects[$this->currentContents]['c'].=  sprintf('%.3f', $p[$i]) .' '.sprintf('%.3f', $p[$i+1]) .' l ';
    }

if  ($f ==  1) {

$this->objects[$this->currentContents]['c'].=  ' f';
    } else {

$this->objects[$this->currentContents]['c'].=  ' S';
    }
  }

/**
   * a filled rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
   * the coordinates of the upper-right corner
   */
  function  filledRectangle($x1, $y1, $width, $height) {

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $x1) .' '.sprintf('%.3f', $y1) .' '.sprintf('%.3f', $width) .' '.sprintf('%.3f', $height) .' re f';
  }

/**
   * draw a rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
   * the coordinates of the upper-right corner
   */
  function  rectangle($x1, $y1, $width, $height) {

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $x1) .' '.sprintf('%.3f', $y1) .' '.sprintf('%.3f', $width) .' '.sprintf('%.3f', $height) .' re S';
  }

/**
   * add a new page to the document
   * this also makes the new page the current active object
   */
  function  newPage($insert =  0, $id =  0, $pos =  'after') {

// if there is a state saved, then go up the stack closing them
    // then on the new page, re-open them with the right setings

if  ($this->nStateStack) {

for  ($i =  $this->nStateStack;$i >=  1;$i--) {

$this->restoreState($i);
      }
    }

$this->numObj++;

if  ($insert) {

// the id from the ezPdf class is the od of the contents of the page, not the page object itself
      // query that object to find the parent
      $rid =  $this->objects[$id]['onPage'];

$opt =  array('rid' => $rid, 'pos' => $pos);

$this->o_page($this->numObj, 'new', $opt);
    } else {

$this->o_page($this->numObj, 'new');
    }

// if there is a stack saved, then put that onto the page
    if  ($this->nStateStack) {

for ($i = 1;$i <= $this->nStateStack;$i++) {

$this->saveState($i);
      }
    }

// and if there has been a stroke or fill colour set, then transfer them
    if  ($this->currentColour['r'] >=  0) {

$this->setColor($this->currentColour['r'], $this->currentColour['g'], $this->currentColour['b'], 1);
    }

if  ($this->currentStrokeColour['r'] >=  0) {

$this->setStrokeColor($this->currentStrokeColour['r'], $this->currentStrokeColour['g'], $this->currentStrokeColour['b'], 1);
    }

// if there is a line style set, then put this in too
    if  (strlen($this->currentLineStyle)) {

$this->objects[$this->currentContents]['c'].=  "\n".$this->currentLineStyle;
    }

// the call to the o_page object set currentContents to the present page, so this can be returned as the page id
    return  $this->currentContents;
  }

/**
   * output the pdf code, streaming it to the browser
   * the relevant headers are set so that hopefully the browser will recognise it
   */
  function  stream($options =  '') {

// setting the options allows the adjustment of the headers
    // values at the moment are:
    // 'Content-Disposition' => 'filename'  - sets the filename, though not too sure how well this will
    //        work as in my trial the browser seems to use the filename of the php file with .pdf on the end
    // 'Accept-Ranges' => 1 or 0 - if this is not set to 1, then this header is not included, off by default
    //    this header seems to have caused some problems despite tha fact that it is supposed to solve
    //    them, so I am leaving it off by default.
    // 'compress' = > 1 or 0 - apply content stream compression, this is on (1) by default
    // 'Attachment' => 1 or 0 - if 1, force the browser to open a download dialog
    if  (!is_array($options)) {

$options =  array();
    }

if  ( headers_sent())
      die("Unable to stream pdf: headers already sent");

if  ( isset($options['compress']) &&  $options['compress'] ==  0) {

$tmp =  ltrim($this->output(1));
    } else {

$tmp =  ltrim($this->output());
    }

header("Cache-Control: private");

header("Content-type: application/pdf");

//header("Content-Length: " . strlen($tmp));
    $fileName =  (isset($options['Content-Disposition']) ?  $options['Content-Disposition'] :  'file.pdf');

if  ( !isset($options["Attachment"]))
      $options["Attachment"] =  true;

$attachment =  $options["Attachment"] ?  "attachment" :  "inline";

header("Content-Disposition: $attachment; filename=\"$fileName\"");

if  (isset($options['Accept-Ranges']) &&  $options['Accept-Ranges'] ==  1) {

header("Accept-Ranges: " . strlen($tmp));
    }

echo  $tmp;

flush();
  }

/**
   * return the height in units of the current font in the given size
   */
  function  getFontHeight($size) {

if  (!$this->numFonts) {

$this->selectFont('./fonts/Helvetica');
    }

// for the current font, and the given size, what is the height of the font in user units
    $h =  $this->fonts[$this->currentFont]['FontBBox'][3]-$this->fonts[$this->currentFont]['FontBBox'][1];

return  $size*$h/1000;
  }

/**
   * return the font decender, this will normally return a negative number
   * if you add this number to the baseline, you get the level of the bottom of the font
   * it is in the pdf user units
   */
  function  getFontDecender($size) {

// note that this will most likely return a negative value
    if  (!$this->numFonts) {

$this->selectFont('./fonts/Helvetica');
    }

$h =  $this->fonts[$this->currentFont]['FontBBox'][1];

return  $size*$h/1000;
  }

/**
   * filter the text, this is applied to all text just before being inserted into the pdf document
   * it escapes the various things that need to be escaped, and so on
   *
   * @access private
   */
  function  filterText($text) {

$search =  array("\\",  "(",  ")",  "&lt;",  "&gt;",  "&#039;",  "&quot;",  "&amp;");

$replace = array("\\\\", "$", "$", "<", ">", "\'", '"', "&");

$text =  str_replace($search,  $replace,  $text);

return  $text;
  }

/**
   * given a start position and information about how text is to be laid out, calculate where
   * on the page the text will end
   *
   * @access private
   */
  function  PRVTgetTextPosition($x, $y, $angle, $size, $wa, $text) {

// given this information return an array containing x and y for the end position as elements 0 and 1
    $w =  $this->getTextWidth($size, $text);

// need to adjust for the number of spaces in this text
    $words =  explode(' ', $text);

$nspaces =  count($words) -1;

$w+=  $wa*$nspaces;

$a =  deg2rad((float)$angle);

return  array(cos($a) *$w+$x, -sin($a) *$w+$y);
  }

/**
   * wrapper function for PRVTcheckTextDirective1
   *
   * @access private
   */
  function  PRVTcheckTextDirective(&$text, $i, &$f) {

return  0;

$x =  0;

$y =  0;

return  $this->PRVTcheckTextDirective1($text, $i, $f, 0, $x, $y);
  }

/**
   * checks if the text stream contains a control directive
   * if so then makes some changes and returns the number of characters involved in the directive
   * this has been re-worked to include everything neccesary to fins the current writing point, so that
   * the location can be sent to the callback function if required
   * if the directive does not require a font change, then $f should be set to 0
   *
   * @access private
   */
  function  PRVTcheckTextDirective1(&$text, $i, &$f, $final, &$x, &$y, $size =  0, $angle =  0, $wordSpaceAdjust =  0) {

return  0;

$directive =  0;

$j =  $i;

if ($text[$j] == '<') {

$j++;

switch ($text[$j]) {

case  '/':

$j++;

if (strlen($text) <= $j) {

return  $directive;
        }

switch ($text[$j]) {

case  'b':

case  'i':

$j++;

if  ($text[$j] ==  '>') {

$p =  strrpos($this->currentTextState, $text[$j-1]);

if  ($p !==  false) {

// then there is one to remove
              $this->currentTextState =  substr($this->currentTextState, 0, $p) .substr($this->currentTextState, $p+1);
            }

$directive =  $j-$i+1;
          }

break;

case  'c':

// this this might be a callback function
          $j++;

$k =  strpos($text, '>', $j);

if  ($k !==  false &&  $text[$j] ==  ':') {

// then this will be treated as a callback directive
            $directive =  $k-$i+1;

$f =  0;

// split the remainder on colons to get the function name and the paramater
            $tmp =  substr($text, $j+1, $k-$j-1);

$b1 =  strpos($tmp, ':');

if  ($b1 !==  false) {

$func =  substr($tmp, 0, $b1);

$parm =  substr($tmp, $b1+1);
            } else {

$func =  $tmp;

$parm =  '';
            }

if  (!isset($func) ||  !strlen(trim($func))) {

$directive =  0;
            } else {

// only call the function if this is the final call
              if  ($final) {

// need to assess the text position, calculate the text width to this point
                // can use getTextWidth to find the text width I think
                $tmp =  $this->PRVTgetTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, substr($text, 0, $i));

$info =  array('x' => $tmp[0], 'y' => $tmp[1], 'angle' => $angle, 'status' => 'end', 'p' => $parm, 'nCallback' => $this->nCallback);

$x =  $tmp[0];

$y =  $tmp[1];

$ret =  $this->$func($info);

if  (is_array($ret)) {

// then the return from the callback function could set the position, to start with, later will do font colour, and font
                  foreach($ret as  $rk => $rv) {

switch ($rk) {

case  'x':

case  'y':

$$rk =  $rv;

break;
                    }
                  }
                }

// also remove from to the stack
                // for simplicity, just take from the end, fix this another day
                $this->nCallback--;

if ($this->nCallback<0) {

$this->nCallBack =  0;
                }
              }
            }
          }

break;
        }

break;

case  'b':

case  'i':

$j++;

if  ($text[$j] ==  '>') {

$this->currentTextState.=  $text[$j-1];

$directive =  $j-$i+1;
        }

break;

case  'C':

$noClose =  1;

case  'c':

// this this might be a callback function
        $j++;

$k =  strpos($text, '>', $j);

if  ($k !==  false &&  $text[$j] ==  ':') {

// then this will be treated as a callback directive
          $directive =  $k-$i+1;

$f =  0;

// split the remainder on colons to get the function name and the paramater
          //          $bits = explode(':',substr($text,$j+1,$k-$j-1));
          $tmp =  substr($text, $j+1, $k-$j-1);

$b1 =  strpos($tmp, ':');

if  ($b1 !==  false) {

$func =  substr($tmp, 0, $b1);

$parm =  substr($tmp, $b1+1);
          } else {

$func =  $tmp;

$parm =  '';
          }

if  (!isset($func) ||  !strlen(trim($func))) {

$directive =  0;
          } else {

// only call the function if this is the final call, ie, the one actually doing printing, not measurement
            if  ($final) {

// need to assess the text position, calculate the text width to this point
              // can use getTextWidth to find the text width I think
              // also add the text height and decender
              $tmp =  $this->PRVTgetTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, substr($text, 0, $i));

$info =  array('x' => $tmp[0], 'y' => $tmp[1], 'angle' => $angle, 'status' => 'start', 'p' => $parm, 'f' => $func, 'height' => $this->getFontHeight($size), 'decender' => $this->getFontDecender($size));

$x =  $tmp[0];

$y =  $tmp[1];

if  (!isset($noClose) ||  !$noClose) {

// only add to the stack if this is a small 'c', therefore is a start-stop pair
                $this->nCallback++;

$info['nCallback'] =  $this->nCallback;

$this->callback[$this->nCallback] =  $info;
              }

$ret =  $this->$func($info);

if  (is_array($ret)) {

// then the return from the callback function could set the position, to start with, later will do font colour, and font
                foreach($ret as  $rk => $rv) {

switch ($rk) {

case  'x':

case  'y':

$$rk =  $rv;

break;
                  }
                }
              }
            }
          }
        }

break;
      }
    }

return  $directive;
  }

/**
   * add text to the document, at a specified location, size and angle on the page
   */
  function  addText($x, $y, $size, $text, $angle =  0, $wordSpaceAdjust =  0) {

if  (!$this->numFonts) {
      $this->selectFont('./fonts/Helvetica');
    }

// if there are any open callbacks, then they should be called, to show the start of the line
    if  ($this->nCallback>0) {

for  ($i =  $this->nCallback;$i>0;$i--) {

// call each function
        $info =  array('x' => $x,
                       'y' => $y,
                       'angle' => $angle,
                       'status' => 'sol',
                       'p' => $this->callback[$i]['p'],
                       'nCallback' => $this->callback[$i]['nCallback'],
                       'height' => $this->callback[$i]['height'],
                       'decender' => $this->callback[$i]['decender']);

$func =  $this->callback[$i]['f'];

$this->$func($info);
      }
    }

if  ($angle ==  0) {

$this->objects[$this->currentContents]['c'].=  "\n".'BT '.sprintf('%.3f', $x) .' '.sprintf('%.3f', $y) .' Td';

} else {

$a =  deg2rad((float)$angle);

$tmp =  "\n".'BT ';

$tmp.=  sprintf('%.3f', cos($a)) .' '.sprintf('%.3f', (-1.0*sin($a))) .' '.sprintf('%.3f', sin($a)) .' '.sprintf('%.3f', cos($a)) .' ';

$tmp.=  sprintf('%.3f', $x) .' '.sprintf('%.3f', $y) .' Tm';

$this->objects[$this->currentContents]['c'].=  $tmp;
    }

if  ($wordSpaceAdjust !=  0 ||  $wordSpaceAdjust !=  $this->wordSpaceAdjust) {

$this->wordSpaceAdjust =  $wordSpaceAdjust;

$this->objects[$this->currentContents]['c'].=  ' '.sprintf('%.3f', $wordSpaceAdjust) .' Tw';
    }

$len =  strlen($text);

$start =  0;

/*
 for ($i = 0;$i<$len;$i++){
 $f = 1;
 $directive = 0; //$this->PRVTcheckTextDirective($text,$i,$f);
 if ($directive){
 // then we should write what we need to
 if ($i>$start){
 $part = substr($text,$start,$i-$start);
 $this->objects[$this->currentContents]['c'] .= ' /F'.$this->currentFontNum.' '.sprintf('%.1f',$size).' Tf ';
 $this->objects[$this->currentContents]['c'] .= ' ('.$this->filterText($part).') Tj';
 }
 if ($f){
 // then there was nothing drastic done here, restore the contents
 $this->setCurrentFont();
 } else {
 $this->objects[$this->currentContents]['c'] .= ' ET';
 $f = 1;
 $xp = $x;
 $yp = $y;
 $directive = 0; //$this->PRVTcheckTextDirective1($text,$i,$f,1,$xp,$yp,$size,$angle,$wordSpaceAdjust);

// restart the text object
     if ($angle == 0){
     $this->objects[$this->currentContents]['c'] .= "\n".'BT '.sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Td';
     } else {
     $a = deg2rad((float)$angle);
     $tmp = "\n".'BT ';
     $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
     $tmp .= sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Tm';
     $this->objects[$this->currentContents]['c'] .= $tmp;
     }
     if ($wordSpaceAdjust != 0 || $wordSpaceAdjust != $this->wordSpaceAdjust){
     $this->wordSpaceAdjust = $wordSpaceAdjust;
     $this->objects[$this->currentContents]['c'] .= ' '.sprintf('%.3f',$wordSpaceAdjust).' Tw';
     }
     }
     // and move the writing point to the next piece of text
     $i = $i+$directive-1;
     $start = $i+1;
     }

}
 */
 if ($start < $len) {

$part =  substr($text, $start);

$this->objects[$this->currentContents]['c'].=  ' /F'.$this->currentFontNum.' '.sprintf('%.1f', $size) .' Tf ';

$this->objects[$this->currentContents]['c'].=  ' ('.$this->filterText($part) .') Tj';
    }

$this->objects[$this->currentContents]['c'].=  ' ET';

// if there are any open callbacks, then they should be called, to show the end of the line
    if  ($this->nCallback>0) {

for  ($i =  $this->nCallback;$i>0;$i--) {

// call each function
        $tmp =  $this->PRVTgetTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, $text);

$info =  array('x' => $tmp[0], 'y' => $tmp[1], 'angle' => $angle, 'status' => 'eol', 'p' => $this->callback[$i]['p'], 'nCallback' => $this->callback[$i]['nCallback'], 'height' => $this->callback[$i]['height'], 'decender' => $this->callback[$i]['decender']);

$func =  $this->callback[$i]['f'];

$this->$func($info);
      }
    }
  }

/**
   * calculate how wide a given text string will be on a page, at a given size.
   * this can be called externally, but is alse used by the other class functions
   */
  function  getTextWidth($size, $text, $spacing =  0) {

// this function should not change any of the settings, though it will need to
    // track any directives which change during calculation, so copy them at the start
    // and put them back at the end.
    $store_currentTextState =  $this->currentTextState;

if  (!$this->numFonts) {

$this->selectFont('./fonts/Helvetica');
    }

// converts a number or a float to a string so it can get the width
    $text =  "$text";

// hmm, this is where it all starts to get tricky - use the font information to
    // calculate the width of each character, add them up and convert to user units
    $w =  0;

$len =  strlen($text);

$cf =  $this->currentFont;

$space_scale =  1000 / $size;

for ($i = 0; $i < $len; $i++) {

//     $f = 1;
      //     $directive = 0; //$this->PRVTcheckTextDirective($text,$i,$f);
      //     if ($directive){
      //       if ($f){
      //         $this->setCurrentFont();
      //         $cf = $this->currentFont;
      //       }
      //       $i = $i+$directive-1;
      //     } else {
      $char =  ord($text{$i});

if  ( isset($this->fonts[$cf]['differences'][$char])) {

// then this character is being replaced by another
        $name =  $this->fonts[$cf]['differences'][$char];

if  ( isset($this->fonts[$cf]['C'][$name]['WX']))
          $w+=  $this->fonts[$cf]['C'][$name]['WX'];
      } else  if  (isset($this->fonts[$cf]['C'][$char]['WX']))
        $w+=  $this->fonts[$cf]['C'][$char]['WX'];

if  ( $char ==  32)  // Space
        $w+=  $spacing * $space_scale;
    }

$this->currentTextState =  $store_currentTextState;

$this->setCurrentFont();

return  $w*$size/1000;
  }

/**
   * do a part of the calculation for sorting out the justification of the text
   *
   * @access private
   */
  function  PRVTadjustWrapText($text, $actual, $width, &$x, &$adjust, $justification) {

switch  ($justification) {

case  'left':

return;

break;

case  'right':

$x+=  $width-$actual;

break;

case  'center':

case  'centre':

$x+=  ($width-$actual) /2;

break;

case  'full':

// count the number of words
      $words =  explode(' ', $text);

$nspaces =  count($words) -1;

if  ($nspaces>0) {

$adjust =  ($width-$actual) /$nspaces;
      } else {

$adjust =  0;
      }

break;
    }
  }

/**
   * add text to the page, but ensure that it fits within a certain width
   * if it does not fit then put in as much as possible, splitting at word boundaries
   * and return the remainder.
   * justification and angle can also be specified for the text
   */
  function  addTextWrap($x, $y, $width, $size, $text, $justification =  'left', $angle =  0, $test =  0) {

// this will display the text, and if it goes beyond the width $width, will backtrack to the
    // previous space or hyphen, and return the remainder of the text.

// $justification can be set to 'left','right','center','centre','full'

// need to store the initial text state, as this will change during the width calculation
    // but will need to be re-set before printing, so that the chars work out right
    $store_currentTextState =  $this->currentTextState;

if  (!$this->numFonts) {
      $this->selectFont('./fonts/Helvetica');
    }

if ($width <= 0) {

// error, pretend it printed ok, otherwise risking a loop
      return  '';
    }

$w =  0;

$break =  0;

$breakWidth =  0;

$len =  strlen($text);

$cf =  $this->currentFont;

$tw =  $width/$size*1000;

for ($i = 0;$i<$len;$i++) {

$f =  1;

$directive =  0;
      //$this->PRVTcheckTextDirective($text,$i,$f);
      if  ($directive) {

if  ($f) {

$this->setCurrentFont();

$cf =  $this->currentFont;
        }

$i =  $i+$directive-1;
      } else {

$cOrd =  ord($text[$i]);

if  (isset($this->fonts[$cf]['differences'][$cOrd])) {

// then this character is being replaced by another
          $cOrd2 =  $this->fonts[$cf]['differences'][$cOrd];
        } else {

$cOrd2 =  $cOrd;
        }

if  (isset($this->fonts[$cf]['C'][$cOrd2]['WX'])) {

$w+=  $this->fonts[$cf]['C'][$cOrd2]['WX'];
        }

if  ($w>$tw) {

// then we need to truncate this line
          if  ($break>0) {

// then we have somewhere that we can split :)
            if  ($text[$break] ==  ' ') {

$tmp =  substr($text, 0, $break);
            } else {

$tmp =  substr($text, 0, $break+1);
            }

$adjust =  0;

$this->PRVTadjustWrapText($tmp, $breakWidth, $width, $x, $adjust, $justification);

// reset the text state
            $this->currentTextState =  $store_currentTextState;

$this->setCurrentFont();

if  (!$test) {

$this->addText($x, $y, $size, $tmp, $angle, $adjust);
            }

return  substr($text, $break+1);
          } else {

// just split before the current character
            $tmp =  substr($text, 0, $i);

$adjust =  0;

$ctmp =  ord($text[$i]);

if  (isset($this->fonts[$cf]['differences'][$ctmp])) {

$ctmp =  $this->fonts[$cf]['differences'][$ctmp];
            }

$tmpw =  ($w-$this->fonts[$cf]['C'][$ctmp]['WX']) *$size/1000;

$this->PRVTadjustWrapText($tmp, $tmpw, $width, $x, $adjust, $justification);

// reset the text state
            $this->currentTextState =  $store_currentTextState;

$this->setCurrentFont();

if  (!$test) {

$this->addText($x, $y, $size, $tmp, $angle, $adjust);
            }

return  substr($text, $i);
          }
        }

if  ($text[$i] ==  '-') {

$break =  $i;

$breakWidth =  $w*$size/1000;
        }

if  ($text[$i] ==  ' ') {

$break =  $i;

$ctmp =  ord($text[$i]);

if  (isset($this->fonts[$cf]['differences'][$ctmp])) {

$ctmp =  $this->fonts[$cf]['differences'][$ctmp];
          }

$breakWidth =  ($w-$this->fonts[$cf]['C'][$ctmp]['WX']) *$size/1000;
        }
      }
    }

// then there was no need to break this line
    if  ($justification ==  'full') {

$justification =  'left';
    }

$adjust =  0;

$tmpw =  $w*$size/1000;

$this->PRVTadjustWrapText($text, $tmpw, $width, $x, $adjust, $justification);

// reset the text state
    $this->currentTextState =  $store_currentTextState;

$this->setCurrentFont();

if  (!$test) {

$this->addText($x, $y, $size, $text, $angle, $adjust, $angle);
    }

return  '';
  }

/**
   * this will be called at a new page to return the state to what it was on the
   * end of the previous page, before the stack was closed down
   * This is to get around not being able to have open 'q' across pages
   *
   */
  function  saveState($pageEnd =  0) {

if  ($pageEnd) {

// this will be called at a new page to return the state to what it was on the
      // end of the previous page, before the stack was closed down
      // This is to get around not being able to have open 'q' across pages
      $opt =  $this->stateStack[$pageEnd];
      // ok to use this as stack starts numbering at 1
      $this->setColor($opt['col']['r'], $opt['col']['g'], $opt['col']['b'], 1);

$this->setStrokeColor($opt['str']['r'], $opt['str']['g'], $opt['str']['b'], 1);

$this->objects[$this->currentContents]['c'].=  "\n".$opt['lin'];

//    $this->currentLineStyle = $opt['lin'];

} else {

$this->nStateStack++;

$this->stateStack[$this->nStateStack] =  array(
                                                     'col' => $this->currentColour, 'str' => $this->currentStrokeColour, 'lin' => $this->currentLineStyle);
    }

$this->objects[$this->currentContents]['c'].=  "\nq";
  }

/**
   * restore a previously saved state
   */
  function  restoreState($pageEnd =  0) {

if  (!$pageEnd) {

$n =  $this->nStateStack;

$this->currentColour =  $this->stateStack[$n]['col'];

$this->currentStrokeColour =  $this->stateStack[$n]['str'];

$this->objects[$this->currentContents]['c'].=  "\n".$this->stateStack[$n]['lin'];

$this->currentLineStyle =  $this->stateStack[$n]['lin'];

unset($this->stateStack[$n]);

$this->nStateStack--;
    }

$this->objects[$this->currentContents]['c'].=  "\nQ";
  }

/**
   * make a loose object, the output will go into this object, until it is closed, then will revert to
   * the current one.
   * this object will not appear until it is included within a page.
   * the function will return the object number
   */
  function  openObject() {

$this->nStack++;

$this->stack[$this->nStack] =  array('c' => $this->currentContents, 'p' => $this->currentPage);

// add a new object of the content type, to hold the data flow
    $this->numObj++;

$this->o_contents($this->numObj, 'new');

$this->currentContents =  $this->numObj;

$this->looseObjects[$this->numObj] =  1;

return  $this->numObj;
  }

/**
   * open an existing object for editing
   */
  function  reopenObject($id) {

$this->nStack++;

$this->stack[$this->nStack] =  array('c' => $this->currentContents, 'p' => $this->currentPage);

$this->currentContents =  $id;

// also if this object is the primary contents for a page, then set the current page to its parent
    if  (isset($this->objects[$id]['onPage'])) {

$this->currentPage =  $this->objects[$id]['onPage'];
    }
  }

/**
   * close an object
   */
  function  closeObject() {

// close the object, as long as there was one open in the first place, which will be indicated by
    // an objectId on the stack.
    if  ($this->nStack>0) {

$this->currentContents =  $this->stack[$this->nStack]['c'];

$this->currentPage =  $this->stack[$this->nStack]['p'];

$this->nStack--;

// easier to probably not worry about removing the old entries, they will be overwritten
      // if there are new ones.

}
  }

/**
   * stop an object from appearing on pages from this point on
   */
  function  stopObject($id) {

// if an object has been appearing on pages up to now, then stop it, this page will
    // be the last one that could contian it.
    if  (isset($this->addLooseObjects[$id])) {

$this->addLooseObjects[$id] =  '';
    }
  }

/**
   * after an object has been created, it wil only show if it has been added, using this function.
   */
  function  addObject($id, $options =  'add') {

// add the specified object to the page
    if  (isset($this->looseObjects[$id]) &&  $this->currentContents !=  $id) {

// then it is a valid object, and it is not being added to itself
      switch ($options) {

case  'all':

// then this object is to be added to this page (done in the next block) and
        // all future new pages.
        $this->addLooseObjects[$id] =  'all';

case  'add':

if  (isset($this->objects[$this->currentContents]['onPage'])) {

// then the destination contents is the primary for the page
          // (though this object is actually added to that page)
          $this->o_page($this->objects[$this->currentContents]['onPage'], 'content', $id);
        }

break;

case  'even':

$this->addLooseObjects[$id] =  'even';

$pageObjectId =  $this->objects[$this->currentContents]['onPage'];

if  ($this->objects[$pageObjectId]['info']['pageNum']%2 ==  0) {

$this->addObject($id);
          // hacky huh :)

}

break;

case  'odd':

$this->addLooseObjects[$id] =  'odd';

$pageObjectId =  $this->objects[$this->currentContents]['onPage'];

if  ($this->objects[$pageObjectId]['info']['pageNum']%2 ==  1) {

$this->addObject($id);
          // hacky huh :)

}

break;

case  'next':

$this->addLooseObjects[$id] =  'all';

break;

case  'nexteven':

$this->addLooseObjects[$id] =  'even';

break;

case  'nextodd':

$this->addLooseObjects[$id] =  'odd';

break;
      }
    }
  }

/**
   * return a storable representation of a specific object
   */
  function  serializeObject($id) {

if  ( array_key_exists($id,  $this->objects))
      return  var_export($this->objects[$id],  true);

return  null;
  }

/**
   * restore an object from its stored representation.  returns its new object id.
   */
  function  restoreSerializedObject($obj) {

$obj_id =  $this->openObject();

eval('$this->objects[$obj_id] = ' . $obj . ';');

$this->closeObject();

return  $obj_id;
  }

/**
   * add content to the documents info object
   */
  function  addInfo($label, $value =  0) {

// this will only work if the label is one of the valid ones.
    // modify this so that arrays can be passed as well.
    // if $label is an array then assume that it is key => value pairs
    // else assume that they are both scalar, anything else will probably error
    if  (is_array($label)) {

foreach ($label as  $l => $v) {

$this->o_info($this->infoObject, $l, $v);
      }
    } else {

$this->o_info($this->infoObject, $label, $value);
    }
  }

/**
   * set the viewer preferences of the document, it is up to the browser to obey these.
   */
  function  setPreferences($label, $value =  0) {

// this will only work if the label is one of the valid ones.
    if  (is_array($label)) {

foreach ($label as  $l => $v) {

$this->o_catalog($this->catalogId, 'viewerPreferences', array($l => $v));
      }
    } else {

$this->o_catalog($this->catalogId, 'viewerPreferences', array($label => $value));
    }
  }

/**
   * extract an integer from a position in a byte stream
   *
   * @access private
   */
  function  PRVT_getBytes(&$data, $pos, $num) {

// return the integer represented by $num bytes from $pos within $data
    $ret =  0;

for ($i = 0;$i<$num;$i++) {

$ret =  $ret*256;

$ret+=  ord($data[$pos+$i]);
    }

return  $ret;
  }

/**
   * add a PNG image into the document, from a file
   * this should work with remote files
   */
  function  addPngFromFile($file, $x, $y, $w =  0, $h =  0) {

// read in a png file, interpret it, then add to the system
    $error =  0;

$tmp =  get_magic_quotes_runtime();

set_magic_quotes_runtime(0);

if  ( ($data =  file_get_contents($file)) ===  false) {

//   $fp = @fopen($file,'rb');
      //   if ($fp){
      //     $data = '';
      //     while(!feof($fp)){
      //       $data .= fread($fp,1024);
      //     }
      //     fclose($fp);
      $error =  1;

$errormsg =  'trouble opening file: '.$file;
    }

set_magic_quotes_runtime($tmp);

if  (!$error) {

$header =  chr(137) .chr(80) .chr(78) .chr(71) .chr(13) .chr(10) .chr(26) .chr(10);

if  (substr($data, 0, 8) !=  $header) {

$error =  1;

$errormsg =  'this file does not have a valid header';
      }
    }

if  (!$error) {

// set pointer
      $p =  8;

$len =  strlen($data);

// cycle through the file, identifying chunks
      $haveHeader =  0;

$info =  array();

$idata =  '';

$pdata =  '';

while ($p < $len) {

$chunkLen =  $this->PRVT_getBytes($data, $p, 4);

$chunkType =  substr($data, $p+4, 4);

// echo $chunkType.' - '.$chunkLen.' ';

switch ($chunkType) {

case  'IHDR':

// this is where all the file information comes from
          $info['width'] =  $this->PRVT_getBytes($data, $p+8, 4);

$info['height'] =  $this->PRVT_getBytes($data, $p+12, 4);

$info['bitDepth'] =  ord($data[$p+16]);

$info['colorType'] =  ord($data[$p+17]);

$info['compressionMethod'] =  ord($data[$p+18]);

$info['filterMethod'] =  ord($data[$p+19]);

$info['interlaceMethod'] =  ord($data[$p+20]);

//print_r($info);
          $haveHeader =  1;

if  ($info['compressionMethod'] !=  0) {

$error =  1;

$errormsg =  'unsupported compression method';
          }

if  ($info['filterMethod'] !=  0) {

$error =  1;

$errormsg =  'unsupported filter method';
          }

break;

case  'PLTE':

$pdata.=  substr($data, $p+8, $chunkLen);

break;

case  'IDAT':

$idata.=  substr($data, $p+8, $chunkLen);

break;

case  'tRNS':

//this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
          //print "tRNS found, color type = ".$info['colorType']."\n";
          $transparency =  array();

if  ($info['colorType'] ==  3) {
            // indexed color, rbg
            /* corresponding to entries in the plte chunk
             Alpha for palette index 0: 1 byte
             Alpha for palette index 1: 1 byte
             ...etc...
            */
            // there will be one entry for each palette entry. up until the last non-opaque entry.
            // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
            $transparency['type'] =  'indexed';

$numPalette =  strlen($pdata) /3;

$trans =  0;

for  ($i =  $chunkLen;$i >=  0;$i--) {

if  (ord($data[$p+8+$i]) ==  0) {

$trans =  $i;
              }
            }

$transparency['data'] =  $trans;
          } elseif ($info['colorType'] ==  0) {
            // grayscale
            /* corresponding to entries in the plte chunk
             Gray: 2 bytes, range 0 .. (2^bitdepth)-1
            */
            //            $transparency['grayscale'] = $this->PRVT_getBytes($data,$p+8,2); // g = grayscale
            $transparency['type'] =  'indexed';

$transparency['data'] =  ord($data[$p+8+1]);
          } elseif ($info['colorType'] ==  2) {
            // truecolor
            /* corresponding to entries in the plte chunk
             Red: 2 bytes, range 0 .. (2^bitdepth)-1
             Green: 2 bytes, range 0 .. (2^bitdepth)-1
             Blue: 2 bytes, range 0 .. (2^bitdepth)-1
            */
            $transparency['r'] =  $this->PRVT_getBytes($data, $p+8, 2);
            // r from truecolor
            $transparency['g'] =  $this->PRVT_getBytes($data, $p+10, 2);
            // g from truecolor
            $transparency['b'] =  $this->PRVT_getBytes($data, $p+12, 2);
            // b from truecolor

$transparency['type'] = 'color-key';
            
          } else {

//unsupported transparency type

}

// KS End new code
          break;

default:

break;
        }

$p+=  $chunkLen+12;
      }

if (!$haveHeader) {

$error =  1;

$errormsg =  'information header is missing';
      }

if  (isset($info['interlaceMethod']) &&  $info['interlaceMethod']) {

$error =  1;

$errormsg =  'There appears to be no support for interlaced images in pdf.';
      }
    }

if  (!$error &&  $info['bitDepth'] > 8) {

$error =  1;

$errormsg =  'only bit depth of 8 or less is supported';
    }

if  (!$error) {

if  ($info['colorType'] !=  2 &&  $info['colorType'] !=  0 &&  $info['colorType'] !=  3) {

$error =  1;

$errormsg =  'transparancey alpha channel not supported, transparency only supported for palette images.';
      } else {

switch  ($info['colorType']) {

case  3:

$color =  'DeviceRGB';

$ncolor =  1;

break;

case  2:

$color =  'DeviceRGB';

$ncolor =  3;

break;

case  0:

$color =  'DeviceGray';

$ncolor =  1;

break;
        }
      }
    }

if  ($error) {

$this->addMessage('PNG error - ('.$file.') '.$errormsg);

return;
    }

if  ($w ==  0) {

$w =  $h/$info['height']*$info['width'];
    }

if  ($h ==  0) {

$h =  $w*$info['height']/$info['width'];
    }

//print_r($info);
    // so this image is ok... add it in.
    $this->numImages++;

$im =  $this->numImages;

$label =  'I'.$im;

$this->numObj++;

//  $this->o_image($this->numObj,'new',array('label' => $label,'data' => $idata,'iw' => $w,'ih' => $h,'type' => 'png','ic' => $info['width']));
    $options =  array('label' => $label, 'data' => $idata, 'bitsPerComponent' => $info['bitDepth'], 'pdata' => $pdata, 'iw' => $info['width'], 'ih' => $info['height'], 'type' => 'png', 'color' => $color, 'ncolor' => $ncolor);

if  (isset($transparency)) {

$options['transparency'] =  $transparency;
    }

$this->o_image($this->numObj, 'new', $options);

$this->objects[$this->currentContents]['c'].=  "\nq";

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $w) ." 0 0 ".sprintf('%.3f', $h) ." ".sprintf('%.3f', $x) ." ".sprintf('%.3f', $y) ." cm";

$this->objects[$this->currentContents]['c'].=  "\n/".$label.' Do';

$this->objects[$this->currentContents]['c'].=  "\nQ";
  }

/**
   * add a JPEG image into the document, from a file
   */
  function  addJpegFromFile($img, $x, $y, $w =  0, $h =  0) {

// attempt to add a jpeg image straight from a file, using no GD commands
    // note that this function is unable to operate on a remote file.

if  (!file_exists($img)) {

return;
    }

$tmp =  getimagesize($img);

$imageWidth =  $tmp[0];

$imageHeight =  $tmp[1];

if  (isset($tmp['channels'])) {

$channels =  $tmp['channels'];
    } else {

$channels =  3;
    }

if ($w <= 0 && $h <= 0) {

$w =  $imageWidth;
    }

if  ($w ==  0) {

$w =  $h/$imageHeight*$imageWidth;
    }

if  ($h ==  0) {

$h =  $w*$imageHeight/$imageWidth;
    }

//$fp = fopen($img,'rb');

$tmp =  get_magic_quotes_runtime();

set_magic_quotes_runtime(0);

$data =  file_get_contents($img);

//fread($fp,filesize($img));
    set_magic_quotes_runtime($tmp);

//fclose($fp);

$this->addJpegImage_common($data, $x, $y, $w, $h, $imageWidth, $imageHeight, $channels);
  }

/**
   * add an image into the document, from a GD object
   * this function is not all that reliable, and I would probably encourage people to use
   * the file based functions
   */
  function  addImage(&$img, $x, $y, $w =  0, $h =  0, $quality =  75) {

// add a new image into the current location, as an external object
    // add the image at $x,$y, and with width and height as defined by $w & $h

// note that this will only work with full colour images and makes them jpg images for display
    // later versions could present lossless image formats if there is interest.

// there seems to be some problem here in that images that have quality set above 75 do not appear
    // not too sure why this is, but in the meantime I have restricted this to 75.
    if  ($quality>75) {

$quality =  75;
    }

// if the width or height are set to zero, then set the other one based on keeping the image
    // height/width ratio the same, if they are both zero, then give up :)
    $imageWidth =  imagesx($img);

$imageHeight =  imagesy($img);

if ($w <= 0 && $h <= 0) {

return;
    }

if  ($w ==  0) {

$w =  $h/$imageHeight*$imageWidth;
    }

if  ($h ==  0) {

$h =  $w*$imageHeight/$imageWidth;
    }

// gotta get the data out of the img..

// so I write to a temp file, and then read it back.. soo ugly, my apologies.
    $tmpDir =  '/tmp';

$tmpName =  tempnam($tmpDir, 'img');

imagejpeg($img, $tmpName, $quality);

//$fp = fopen($tmpName,'rb');

$tmp =  get_magic_quotes_runtime();

set_magic_quotes_runtime(0);

if  ( ($data =  file_get_contents($tmpName)) ===  false) {

//   $fp = @fopen($tmpName,'rb');
      //   if ($fp){
      //     $data = '';
      //     while(!feof($fp)){
      //       $data .= fread($fp,1024);
      //     }
      //     fclose($fp);
      $error =  1;

$errormsg =  'trouble opening file';
    }

//  $data = fread($fp,filesize($tmpName));
    set_magic_quotes_runtime($tmp);

//  fclose($fp);
    unlink($tmpName);

$this->addJpegImage_common($data, $x, $y, $w, $h, $imageWidth, $imageHeight);
  }

/**
   * common code used by the two JPEG adding functions
   *
   * @access private
   */
  function  addJpegImage_common(&$data, $x, $y, $w =  0, $h =  0, $imageWidth, $imageHeight, $channels =  3) {

// note that this function is not to be called externally
    // it is just the common code between the GD and the file options
    $this->numImages++;

$im =  $this->numImages;

$label =  'I'.$im;

$this->numObj++;

$this->o_image($this->numObj, 'new', array('label' => $label, 'data' => &$data, 'iw' => $imageWidth, 'ih' => $imageHeight, 'channels' => $channels));

$this->objects[$this->currentContents]['c'].=  "\nq";

$this->objects[$this->currentContents]['c'].=  "\n".sprintf('%.3f', $w) ." 0 0 ".sprintf('%.3f', $h) ." ".sprintf('%.3f', $x) ." ".sprintf('%.3f', $y) ." cm";

$this->objects[$this->currentContents]['c'].=  "\n/".$label.' Do';

$this->objects[$this->currentContents]['c'].=  "\nQ";
  }

/**
   * specify where the document should open when it first starts
   */
  function  openHere($style, $a =  0, $b =  0, $c =  0) {

// this function will open the document at a specified page, in a specified style
    // the values for style, and the required paramters are:
    // 'XYZ'  left, top, zoom
    // 'Fit'
    // 'FitH' top
    // 'FitV' left
    // 'FitR' left,bottom,right
    // 'FitB'
    // 'FitBH' top
    // 'FitBV' left
    $this->numObj++;

$this->o_destination($this->numObj, 'new', array('page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c));

$id =  $this->catalogId;

$this->o_catalog($id, 'openHere', $this->numObj);
  }

/**
   * create a labelled destination within the document
   */
  function  addDestination($label, $style, $a =  0, $b =  0, $c =  0) {

// associates the given label with the destination, it is done this way so that a destination can be specified after
    // it has been linked to
    // styles are the same as the 'openHere' function
    $this->numObj++;

$this->o_destination($this->numObj, 'new', array('page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c));

$id =  $this->numObj;

// store the label->idf relationship, note that this means that labels can be used only once
    $this->destinations["$label"] =  $id;
  }

/**
   * define font families, this is used to initialize the font families for the default fonts
   * and for the user to add new ones for their fonts. The default bahavious can be overridden should
   * that be desired.
   */
  function  setFontFamily($family, $options =  '') {

if  (!is_array($options)) {

if  ($family ==  'init') {

// set the known family groups
 // these font families will be used to enable bold and italic markers to be included
 // within text streams. html forms will be used... 
 $this->fontFamilies['Helvetica.afm'] =
 array('b' => 'Helvetica-Bold.afm',
 'i' => 'Helvetica-Oblique.afm',
 'bi' => 'Helvetica-BoldOblique.afm',
 'ib' => 'Helvetica-BoldOblique.afm');

$this->fontFamilies['Courier.afm'] =
          array('b' => 'Courier-Bold.afm',
                'i' => 'Courier-Oblique.afm',
                'bi' => 'Courier-BoldOblique.afm',
                'ib' => 'Courier-BoldOblique.afm');

$this->fontFamilies['Times-Roman.afm'] =
          array('b' => 'Times-Bold.afm',
                'i' => 'Times-Italic.afm',
                'bi' => 'Times-BoldItalic.afm',
                'ib' => 'Times-BoldItalic.afm');
      }
    } else {

// the user is trying to set a font family
      // note that this can also be used to set the base ones to something else
      if  (strlen($family)) {

$this->fontFamilies[$family] =  $options;
      }
    }
  }

/**
   * used to add messages for use in debugging
   */
  function  addMessage($message) {

$this->messages.=  $message."\n";
  }

/**
   * a few functions which should allow the document to be treated transactionally.
   */
  function  transaction($action) {

switch  ($action) {

case  'start':

// store all the data away into the checkpoint variable
      $data =  get_object_vars($this);

$this->checkpoint =  $data;

unset($data);

break;

case  'commit':

if  (is_array($this->checkpoint) &&  isset($this->checkpoint['checkpoint'])) {

$tmp =  $this->checkpoint['checkpoint'];

$this->checkpoint =  $tmp;

unset($tmp);
      } else {

$this->checkpoint =  '';
      }

break;

case  'rewind':

// do not destroy the current checkpoint, but move us back to the state then, so that we can try again
      if  (is_array($this->checkpoint)) {

// can only abort if were inside a checkpoint
        $tmp =  $this->checkpoint;

foreach ($tmp as  $k => $v) {

if  ($k !=  'checkpoint') {

$this->$k =  $v;
          }
        }

unset($tmp);
      }

break;

case  'abort':

if  (is_array($this->checkpoint)) {

// can only abort if were inside a checkpoint
        $tmp =  $this->checkpoint;

foreach ($tmp as  $k => $v) {

$this->$k =  $v;
        }

unset($tmp);
      }

break;
    }
  }
}
// end of class

Batal

⬅ Naik ke New folder 3 item

Nama	Tipe	Ukuran	Diubah	Aksi
📁fonts	dir	—	2020-02-15 06:19	📂 Buka
📁res	dir	—	2020-02-15 06:19	📂 Buka
🐘class.pdf.php	php	115 KB	2017-02-16 07:09	✏️ Edit 👁️ View