File Source for class.pdf.php

<?php
/**
* Cpdf
*
*
* 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 <[email protected]>
* @version 009
* @package Cpdf
* @link http://www.ros.co.nz/pdf
*/
class Cpdf {
/**
* the current number of pdf objects in the document
*/
var $numObj=0;
/**
* this array contains all of the pdf objects, ready for final assembly
*/
var $objects = array();
/**
* the objectId (number within the objects array) of the document catalog
*/
var $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
*/
var $fonts=array();
/**
* a record of the current font
*/
var $currentFont='';
/**
* the current base font
*/
var $currentBaseFont='';
/**
* the number of the current font within the font array
*/
var $currentFontNum=0;
/**
*
*/
var $currentNode;
/**
* object number of the current page
*/
var $currentPage;
/**
* object number of the currently active contents block
*/
var $currentContents;
/**
* number of fonts within the system
*/
var $numFonts=0;
/**
* current colour for fill operations, defaults to inactive value, all three components should be between 0 and 1 inclusive when active
*/
var $currentColour=array('r'=>-1,'g'=>-1,'b'=>-1);
/**
* current colour for stroke operations (lines etc.)
*/
var $currentStrokeColour=array('r'=>-1,'g'=>-1,'b'=>-1);
/**
* current style that lines are drawn in
*/
var $currentLineStyle='';
/**
* 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
*/
var $stateStack = array();
/**
* number of elements within the state stack
*/
var $nStateStack = 0;
/**
* number of page objects within the document
*/
var $numPages=0;
/**
* object Id storage stack
*/
var $stack=array();
/**
* number of elements within the object Id storage stack
*/
var $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
*/
var $looseObjects=array();
/**
* array contains infomation about how the loose objects are to be added to the document
*/
var $addLooseObjects=array();
/**
* the objectId of the information object for the document
* this contains authorship, title etc.
*/
var $infoObject=0;
/**
* number of images being tracked within the document
*/
var $numImages=0;
/**
* an array containing options about the document
* it defaults to turning on the compression of the objects
*/
var $options=array('compression'=>1);
/**
* the objectId of the first page of the document
*/
var $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.
*/
var $wordSpaceAdjust=0;
/**
* the object Id of the procset object
*/
var $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.
*/
var $fontFamilies = array();
/**
* track if the current font is bolded or italicised
*/
var $currentTextState = '';
/**
* messages are stored here during processing, these can be selected afterwards to give some useful debug information
*/
var $messages='';
/**
* the ancryption array for the document encryption is stored here
*/
var $arc4='';
/**
* the object Id of the encryption information
*/
var $arc4_objnum=0;
/**
* the file identifier, used to uniquely identify a pdf document
*/
var $fileIdentifier='';
/**
* a flag to say if a document is to be encrypted or not
*/
var $encrypted=0;
/**
* the ancryption key for the encryption of all the document content (structure is not encrypted)
*/
var $encryptionKey='';
/**
* array which forms a stack to keep track of nested callback functions
*/
var $callback = array();
/**
* the number of callback functions in the callback array
*/
var $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
*/
var $destinations = array();
/**
* store the stack for the transaction commands, each item in here is a record of the values of all the
* variables 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.
*/
var $checkpoint = '';
/**
* class constructor
* this will start a new document
* @var array array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
*/
function Cpdf ($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 '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'])){
$res.="\n/Resources <<";
if (isset($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.=" >>";
}
$res.="\n>>";
if (isset($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){
$res.="\n/Contents [\n";
foreach ($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);
}
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;
}
}
} else {
$this->objects[$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 $res;
break;
}
}
/**
* encryption object.
*/
function o_encryption($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%âãÏÓ\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){
$content.=substr('0000000000',0,10-strlen($p)).$p." 00000 n \n";
}
$content.="\ntrailer\n << /Size ".(count($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');
$tmp = file($dir.'php_'.$name.'.afm');
$this->fonts[$font]=unserialize($tmp[0]);
if (!isset($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;
$fp = fopen($dir.'php_'.$name.'.afm','w');
fwrite($fp,serialize($data));
fclose($fp);
} 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++;
$pos=strrpos($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.
$fp = fopen($fbfile,'rb');
$tmp = get_magic_quotes_runtime();
set_magic_quotes_runtime(0);
$data = fread($fp,filesize($fbfile));
set_magic_quotes_runtime($tmp);
fclose($fp);
// 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 line means that if a new font is selected, then the current text state will be
// applied to it as well.
$this->setCurrentFont();
}
return $this->currentFontNum;
}
/**
* sets up the current font, based on the font families, and the current text state
* note that this system is quite flexible, a <><> font can be completely different to a
* <><> font, and even <><> will have to be defined within the family to have meaning
* This function is to be called whenever the currentTextState is changed, it will update
* the currentFont setting to whatever the appropriatte family one is.
* If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
* This function will change the currentFont to whatever it should be, but will not change the
* currentBaseFont.
*
* @access private
*/
function setCurrentFont(){
if (strlen($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);
}
}
/**
* 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
if (!is_array($options)){
$options=array();
}
if ( isset($options['compress']) && $options['compress']==0){
$tmp = $this->output(1);
} else {
$tmp = $this->output();
}
header("Content-type: application/pdf");
header("Content-Length: ".strlen(ltrim($tmp)));
$fileName = (isset($options['Content-Disposition'])?$options['Content-Disposition']:'file.pdf');
header("Content-Disposition: inline; filename=".$fileName);
if (isset($options['Accept-Ranges']) && $options['Accept-Ranges']==1){
header("Accept-Ranges: ".strlen(ltrim($tmp)));
}
echo ltrim($tmp);
}
/**
* return the height in units of the current font in the given size
*/
function getFontHeight($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){
$text = str_replace('\\','\\\\',$text);
$text = str_replace('(','\(',$text);
$text = str_replace(')','\)',$text);
$text = str_replace('<','<',$text);
$text = str_replace('>','>',$text);
$text = str_replace(''','\'',$text);
$text = str_replace('"','"',$text);
$text = str_replace('&','&',$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){
$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){
$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 = $this->PRVTcheckTextDirective($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 = $this->PRVTcheckTextDirective1($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){
// 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 = $this->currentFont;
for ($i=0;$i<$len;$i++){
$f=1;
$directive = $this->PRVTcheckTextDirective($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'];
}
}
}
$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 = $this->PRVTcheckTextDirective($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;
}
}
}
/**
* 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);
$fp = @fopen($file,'rb');
if ($fp){
$data='';
while(!feof($fp)){
$data .= fread($fp,1024);
}
fclose($fp);
} else {
$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']." ";
$transparency = array();
if ($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
} 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);
$data = fread($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);
$fp = @fopen($tmpName,'rb');
if ($fp){
$data='';
while(!feof($fp)){
$data .= fread($fp,1024);
}
fclose($fp);
} else {
$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
?>

Source for file class.pdf.php