6 * http://www.ros.co.nz/pdf
8 * A PHP class to provide the basic functionality to create a pdf document without
9 * any requirement for additional modules.
11 * Note that they companion class CezPdf can be used to extend this class and dramatically
12 * simplify the creation of documents.
15 * there is no warranty, implied or otherwise with this software.
18 * This code has been placed in the Public Domain for all to enjoy.
20 * @author Wayne Munro <pdf@ros.co.nz>
27 * the current number of pdf objects in the document
31 * this array contains all of the pdf objects, ready for final assembly
33 var $objects = array();
35 * the objectId (number within the objects array) of the document catalog
39 * array carrying information about the fonts that the system currently knows about
40 * used to ensure that a font is not loaded twice, among other things
44 * a record of the current font
48 * the current base font
50 var $currentBaseFont='';
52 * the number of the current font within the font array
54 var $currentFontNum=0;
60 * object number of the current page
64 * object number of the currently active contents block
68 * number of fonts within the system
72 * current colour for fill operations, defaults to inactive value, all three components should be between 0 and 1 inclusive when active
74 var $currentColour=array('r'=>-1,'g'=>-1,'b'=>-1);
76 * current colour for stroke operations (lines etc.)
78 var $currentStrokeColour=array('r'=>-1,'g'=>-1,'b'=>-1);
80 * current style that lines are drawn in
82 var $currentLineStyle='';
84 * an array which is used to save the state of the document, mainly the colours and styles
85 * it is used to temporarily change to another state, the change back to what it was before
87 var $stateStack = array();
89 * number of elements within the state stack
93 * number of page objects within the document
97 * object Id storage stack
101 * number of elements within the object Id storage stack
105 * an array which contains information about the objects which are not firmly attached to pages
106 * these have been added with the addObject function
108 var $looseObjects=array();
110 * array contains infomation about how the loose objects are to be added to the document
112 var $addLooseObjects=array();
114 * the objectId of the information object for the document
115 * this contains authorship, title etc.
119 * number of images being tracked within the document
123 * an array containing options about the document
124 * it defaults to turning on the compression of the objects
126 var $options=array('compression'=>1);
128 * the objectId of the first page of the document
132 * used to track the last used value of the inter-word spacing, this is so that it is known
133 * when the spacing is changed.
135 var $wordSpaceAdjust=0;
137 * the object Id of the procset object
139 var $procsetObjectId;
141 * store the information about the relationship between font families
142 * this used so that the code knows which font is the bold version of another font, etc.
143 * the value of this array is initialised in the constuctor function.
145 var $fontFamilies = array();
147 * track if the current font is bolded or italicised
149 var $currentTextState = '';
151 * messages are stored here during processing, these can be selected afterwards to give some useful debug information
155 * the ancryption array for the document encryption is stored here
159 * the object Id of the encryption information
163 * the file identifier, used to uniquely identify a pdf document
165 var $fileIdentifier='';
167 * a flag to say if a document is to be encrypted or not
171 * the ancryption key for the encryption of all the document content (structure is not encrypted)
173 var $encryptionKey='';
175 * array which forms a stack to keep track of nested callback functions
177 var $callback = array();
179 * the number of callback functions in the callback array
183 * store label->id pairs for named destinations, these will be used to replace internal links
184 * done this way so that destinations can be defined after the location that links to them
186 var $destinations = array();
188 * store the stack for the transaction commands, each item in here is a record of the values of all the
189 * variables within the class, so that the user can rollback at will (from each 'start' command)
190 * note that this includes the objects array, so these can be large.
192 var $checkpoint = '';
195 * this will start a new document
196 * @var array array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
198 function Cpdf ($pageSize=array(0,0,612,792)){
199 $this->newDocument($pageSize);
201 // also initialize the font families that are known about already
202 $this->setFontFamily('init');
203 // $this->fileIdentifier = md5('xxxxxxxx'.time());
208 * Document object methods (internal use only)
210 * There is about one object method for each type of object in the pdf document
211 * Each function has the same call list ($id,$action,$options).
212 * $id = the object id of the object, or what it is to be if it is being created
213 * $action = a string specifying the action to be performed, though ALL must support:
214 * 'new' - create the object with the id $id
215 * 'out' - produce the output for the pdf object
216 * $options = optional, a string or array containing the various parameters for the object
218 * These, in conjunction with the output function are the ONLY way for output to be produced
219 * within the pdf 'file'.
223 *destination object, used to specify the location for the user to jump to, presently on opening
225 function o_destination($id,$action,$options=''){
227 $o =& $this->objects[$id];
231 $this->objects[$id]=array('t'=>'destination','info'=>array());
233 switch ($options['type']){
236 $tmp = ' '.$options['p3'].$tmp;
241 $tmp = ' '.$options['p1'].' '.$options['p2'].$tmp;
244 $tmp = $options['type'].$tmp;
245 $this->objects[$id]['info']['string']=$tmp;
246 $this->objects[$id]['info']['page']=$options['page'];
251 $res="\n".$id." 0 obj\n".'['.$tmp['page'].' 0 R /'.$tmp['string']."]\nendobj\n";
258 * set the viewer preferences
260 function o_viewerPreferences($id,$action,$options=''){
262 $o =& $this->objects[$id];
266 $this->objects[$id]=array('t'=>'viewerPreferences','info'=>array());
269 foreach($options as $k=>$v){
276 case 'NonFullScreenPageMode':
285 $res="\n".$id." 0 obj\n".'<< ';
286 foreach($o['info'] as $k=>$v){
287 $res.="\n/".$k.' '.$v;
296 * define the document catalog, the overall controller for the document
298 function o_catalog($id,$action,$options=''){
300 $o =& $this->objects[$id];
304 $this->objects[$id]=array('t'=>'catalog','info'=>array());
305 $this->catalogId=$id;
310 $o['info'][$action]=$options;
312 case 'viewerPreferences':
313 if (!isset($o['info']['viewerPreferences'])){
315 $this->o_viewerPreferences($this->numObj,'new');
316 $o['info']['viewerPreferences']=$this->numObj;
318 $vp = $o['info']['viewerPreferences'];
319 $this->o_viewerPreferences($vp,'add',$options);
322 $res="\n".$id." 0 obj\n".'<< /Type /Catalog';
323 foreach($o['info'] as $k=>$v){
326 $res.="\n".'/Outlines '.$v.' 0 R';
329 $res.="\n".'/Pages '.$v.' 0 R';
331 case 'viewerPreferences':
332 $res.="\n".'/ViewerPreferences '.$o['info']['viewerPreferences'].' 0 R';
335 $res.="\n".'/OpenAction '.$o['info']['openHere'].' 0 R';
346 * object which is a parent to the pages in the document
348 function o_pages($id,$action,$options=''){
350 $o =& $this->objects[$id];
354 $this->objects[$id]=array('t'=>'pages','info'=>array());
355 $this->o_catalog($this->catalogId,'pages',$id);
358 if (!is_array($options)){
359 // then it will just be the id of the new page
360 $o['info']['pages'][]=$options;
362 // then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative
363 // and pos is either 'before' or 'after', saying where this page will fit.
364 if (isset($options['id']) && isset($options['rid']) && isset($options['pos'])){
365 $i = array_search($options['rid'],$o['info']['pages']);
366 if (isset($o['info']['pages'][$i]) && $o['info']['pages'][$i]==$options['rid']){
367 // then there is a match
369 switch ($options['pos']){
381 for ($j=count($o['info']['pages'])-1;$j>=$k;$j--){
382 $o['info']['pages'][$j+1]=$o['info']['pages'][$j];
384 $o['info']['pages'][$k]=$options['id'];
391 $o['info']['procset']=$options;
394 $o['info']['mediaBox']=$options; // which should be an array of 4 numbers
397 $o['info']['fonts'][]=array('objNum'=>$options['objNum'],'fontNum'=>$options['fontNum']);
400 $o['info']['xObjects'][]=array('objNum'=>$options['objNum'],'label'=>$options['label']);
403 if (count($o['info']['pages'])){
404 $res="\n".$id." 0 obj\n<< /Type /Pages\n/Kids [";
405 foreach($o['info']['pages'] as $k=>$v){
408 $res.="]\n/Count ".count($this->objects[$id]['info']['pages']);
409 if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) || isset($o['info']['procset'])){
410 $res.="\n/Resources <<";
411 if (isset($o['info']['procset'])){
412 $res.="\n/ProcSet ".$o['info']['procset']." 0 R";
414 if (isset($o['info']['fonts']) && count($o['info']['fonts'])){
416 foreach($o['info']['fonts'] as $finfo){
417 $res.="\n/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R";
421 if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])){
422 $res.="\n/XObject << ";
423 foreach($o['info']['xObjects'] as $finfo){
424 $res.="\n/".$finfo['label']." ".$finfo['objNum']." 0 R";
429 if (isset($o['info']['mediaBox'])){
430 $tmp=$o['info']['mediaBox'];
431 $res.="\n/MediaBox [".sprintf('%.3f',$tmp[0]).' '.sprintf('%.3f',$tmp[1]).' '.sprintf('%.3f',$tmp[2]).' '.sprintf('%.3f',$tmp[3]).']';
434 $res.="\n >>\nendobj";
436 $res="\n".$id." 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj";
444 * define the outlines in the doc, empty for now
446 function o_outlines($id,$action,$options=''){
448 $o =& $this->objects[$id];
452 $this->objects[$id]=array('t'=>'outlines','info'=>array('outlines'=>array()));
453 $this->o_catalog($this->catalogId,'outlines',$id);
456 $o['info']['outlines'][]=$options;
459 if (count($o['info']['outlines'])){
460 $res="\n".$id." 0 obj\n<< /Type /Outlines /Kids [";
461 foreach($o['info']['outlines'] as $k=>$v){
464 $res.="] /Count ".count($o['info']['outlines'])." >>\nendobj";
466 $res="\n".$id." 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
474 * an object to hold the font description
476 function o_font($id,$action,$options=''){
478 $o =& $this->objects[$id];
482 $this->objects[$id]=array('t'=>'font','info'=>array('name'=>$options['name'],'SubType'=>'Type1'));
483 $fontNum=$this->numFonts;
484 $this->objects[$id]['info']['fontNum']=$fontNum;
485 // deal with the encoding and the differences
486 if (isset($options['differences'])){
487 // then we'll need an encoding dictionary
489 $this->o_fontEncoding($this->numObj,'new',$options);
490 $this->objects[$id]['info']['encodingDictionary']=$this->numObj;
491 } else if (isset($options['encoding'])){
492 // we can specify encoding here
493 switch($options['encoding']){
494 case 'WinAnsiEncoding':
495 case 'MacRomanEncoding':
496 case 'MacExpertEncoding':
497 $this->objects[$id]['info']['encoding']=$options['encoding'];
502 $this->objects[$id]['info']['encoding']='WinAnsiEncoding';
506 $this->objects[$id]['info']['encoding']='WinAnsiEncoding';
508 // also tell the pages node about the new font
509 $this->o_pages($this->currentNode,'font',array('fontNum'=>$fontNum,'objNum'=>$id));
512 foreach ($options as $k=>$v){
515 $o['info']['name'] = $v;
520 case 'FontDescriptor':
522 $this->addMessage('o_font '.$k." : ".$v);
529 $res="\n".$id." 0 obj\n<< /Type /Font\n/Subtype /".$o['info']['SubType']."\n";
530 $res.="/Name /F".$o['info']['fontNum']."\n";
531 $res.="/BaseFont /".$o['info']['name']."\n";
532 if (isset($o['info']['encodingDictionary'])){
533 // then place a reference to the dictionary
534 $res.="/Encoding ".$o['info']['encodingDictionary']." 0 R\n";
535 } else if (isset($o['info']['encoding'])){
536 // use the specified encoding
537 $res.="/Encoding /".$o['info']['encoding']."\n";
539 if (isset($o['info']['FirstChar'])){
540 $res.="/FirstChar ".$o['info']['FirstChar']."\n";
542 if (isset($o['info']['LastChar'])){
543 $res.="/LastChar ".$o['info']['LastChar']."\n";
545 if (isset($o['info']['Widths'])){
546 $res.="/Widths ".$o['info']['Widths']." 0 R\n";
548 if (isset($o['info']['FontDescriptor'])){
549 $res.="/FontDescriptor ".$o['info']['FontDescriptor']." 0 R\n";
558 * a font descriptor, needed for including additional fonts
560 function o_fontDescriptor($id,$action,$options=''){
562 $o =& $this->objects[$id];
566 $this->objects[$id]=array('t'=>'fontDescriptor','info'=>$options);
569 $res="\n".$id." 0 obj\n<< /Type /FontDescriptor\n";
570 foreach ($o['info'] as $label => $value){
586 $res.='/'.$label.' '.$value."\n";
592 $res.='/'.$label.' '.$value." 0 R\n";
595 $res.='/'.$label.' ['.$value[0].' '.$value[1].' '.$value[2].' '.$value[3]."]\n";
598 $res.='/'.$label.' /'.$value."\n";
611 function o_fontEncoding($id,$action,$options=''){
613 $o =& $this->objects[$id];
617 // the options array should contain 'differences' and maybe 'encoding'
618 $this->objects[$id]=array('t'=>'fontEncoding','info'=>$options);
621 $res="\n".$id." 0 obj\n<< /Type /Encoding\n";
622 if (!isset($o['info']['encoding'])){
623 $o['info']['encoding']='WinAnsiEncoding';
625 if ($o['info']['encoding']!='none'){
626 $res.="/BaseEncoding /".$o['info']['encoding']."\n";
628 $res.="/Differences \n[";
630 foreach($o['info']['differences'] as $num=>$label){
632 // we cannot make use of consecutive numbering
633 $res.= "\n".$num." /".$label;
639 $res.="\n]\n>>\nendobj";
646 * the document procset, solves some problems with printing to old PS printers
648 function o_procset($id,$action,$options=''){
650 $o =& $this->objects[$id];
654 $this->objects[$id]=array('t'=>'procset','info'=>array('PDF'=>1,'Text'=>1));
655 $this->o_pages($this->currentNode,'procset',$id);
656 $this->procsetObjectId=$id;
659 // this is to add new items to the procset list, despite the fact that this is considered
660 // obselete, the items are required for printing to some postscript printers
665 $o['info'][$options]=1;
670 $res="\n".$id." 0 obj\n[";
671 foreach ($o['info'] as $label=>$val){
672 $res.='/'.$label.' ';
681 * define the document information
683 function o_info($id,$action,$options=''){
685 $o =& $this->objects[$id];
689 $this->infoObject=$id;
690 $date='D:'.date('Ymd');
691 $this->objects[$id]=array('t'=>'info','info'=>array('Creator'=>'R and OS php pdf writer, http://www.ros.co.nz','CreationDate'=>$date));
702 $o['info'][$action]=$options;
705 if ($this->encrypted){
706 $this->encryptInit($id);
708 $res="\n".$id." 0 obj\n<<\n";
709 foreach ($o['info'] as $k=>$v){
711 if ($this->encrypted){
712 $res.=$this->filterText($this->ARC4($v));
714 $res.=$this->filterText($v);
725 * an action object, used to link to URLS initially
727 function o_action($id,$action,$options=''){
729 $o =& $this->objects[$id];
733 if (is_array($options)){
734 $this->objects[$id]=array('t'=>'action','info'=>$options,'type'=>$options['type']);
736 // then assume a URI action
737 $this->objects[$id]=array('t'=>'action','info'=>$options,'type'=>'URI');
741 if ($this->encrypted){
742 $this->encryptInit($id);
744 $res="\n".$id." 0 obj\n<< /Type /Action";
747 // there will be an 'label' setting, this is the name of the destination
748 $res.="\n/S /GoTo\n/D ".$this->destinations[(string)$o['info']['label']]." 0 R";
751 $res.="\n/S /URI\n/URI (";
752 if ($this->encrypted){
753 $res.=$this->filterText($this->ARC4($o['info']));
755 $res.=$this->filterText($o['info']);
760 $res.="\n>>\nendobj";
767 * an annotation object, this will add an annotation to the current page.
768 * initially will support just link annotations
770 function o_annotation($id,$action,$options=''){
772 $o =& $this->objects[$id];
776 // add the annotation to the current page
777 $pageId = $this->currentPage;
778 $this->o_page($pageId,'annot',$id);
779 // and add the action object which is going to be required
780 switch($options['type']){
782 $this->objects[$id]=array('t'=>'annotation','info'=>$options);
784 $this->o_action($this->numObj,'new',$options['url']);
785 $this->objects[$id]['info']['actionId']=$this->numObj;
788 // this is to a named internal link
789 $label = $options['label'];
790 $this->objects[$id]=array('t'=>'annotation','info'=>$options);
792 $this->o_action($this->numObj,'new',array('type'=>'ilink','label'=>$label));
793 $this->objects[$id]['info']['actionId']=$this->numObj;
798 $res="\n".$id." 0 obj\n<< /Type /Annot";
799 switch($o['info']['type']){
802 $res.= "\n/Subtype /Link";
805 $res.="\n/A ".$o['info']['actionId']." 0 R";
806 $res.="\n/Border [0 0 0]";
809 foreach($o['info']['rect'] as $v){
810 $res.= sprintf("%.4f ",$v);
813 $res.="\n>>\nendobj";
820 * a page object, it also creates a contents object to hold its contents
822 function o_page($id,$action,$options=''){
824 $o =& $this->objects[$id];
829 $this->objects[$id]=array('t'=>'page','info'=>array('parent'=>$this->currentNode,'pageNum'=>$this->numPages));
830 if (is_array($options)){
831 // then this must be a page insertion, array shoudl contain 'rid','pos'=[before|after]
833 $this->o_pages($this->currentNode,'page',$options);
835 $this->o_pages($this->currentNode,'page',$id);
837 $this->currentPage=$id;
838 //make a contents object to go with this page
840 $this->o_contents($this->numObj,'new',$id);
841 $this->currentContents=$this->numObj;
842 $this->objects[$id]['info']['contents']=array();
843 $this->objects[$id]['info']['contents'][]=$this->numObj;
844 $match = ($this->numPages%2 ? 'odd' : 'even');
845 foreach($this->addLooseObjects as $oId=>$target){
846 if ($target=='all' || $match==$target){
847 $this->objects[$id]['info']['contents'][]=$oId;
852 $o['info']['contents'][]=$options;
855 // add an annotation to this page
856 if (!isset($o['info']['annot'])){
857 $o['info']['annot']=array();
859 // $options should contain the id of the annotation dictionary
860 $o['info']['annot'][]=$options;
863 $res="\n".$id." 0 obj\n<< /Type /Page";
864 $res.="\n/Parent ".$o['info']['parent']." 0 R";
865 if (isset($o['info']['annot'])){
867 foreach($o['info']['annot'] as $aId){
868 $res.=" ".$aId." 0 R";
872 $count = count($o['info']['contents']);
874 $res.="\n/Contents ".$o['info']['contents'][0]." 0 R";
875 } else if ($count>1){
876 $res.="\n/Contents [\n";
877 foreach ($o['info']['contents'] as $cId){
882 $res.="\n>>\nendobj";
889 * the contents objects hold all of the content which appears on pages
891 function o_contents($id,$action,$options=''){
893 $o =& $this->objects[$id];
897 $this->objects[$id]=array('t'=>'contents','c'=>'','info'=>array());
898 if (strlen($options) && intval($options)){
899 // then this contents is the primary for a page
900 $this->objects[$id]['onPage']=$options;
901 } else if ($options=='raw'){
902 // then this page contains some other type of system object
903 $this->objects[$id]['raw']=1;
907 // add more options to the decleration
908 foreach ($options as $k=>$v){
913 $res= "\n".$id." 0 obj\n";
914 if (isset($this->objects[$id]['raw'])){
918 if (function_exists('gzcompress') && $this->options['compression']){
919 // then implement ZLIB based compression on this content stream
920 $res.=" /Filter /FlateDecode";
921 $tmp = gzcompress($tmp);
923 if ($this->encrypted){
924 $this->encryptInit($id);
925 $tmp = $this->ARC4($tmp);
927 foreach($o['info'] as $k=>$v){
928 $res .= "\n/".$k.' '.$v;
930 $res.="\n/Length ".strlen($tmp)." >>\nstream\n".$tmp."\nendstream";
939 * an image object, will be an XObject in the document, includes description and data
941 function o_image($id,$action,$options=''){
943 $o =& $this->objects[$id];
947 // make the new object
948 $this->objects[$id]=array('t'=>'image','data'=>$options['data'],'info'=>array());
949 $this->objects[$id]['info']['Type']='/XObject';
950 $this->objects[$id]['info']['Subtype']='/Image';
951 $this->objects[$id]['info']['Width']=$options['iw'];
952 $this->objects[$id]['info']['Height']=$options['ih'];
953 if (!isset($options['type']) || $options['type']=='jpg'){
954 if (!isset($options['channels'])){
955 $options['channels']=3;
957 switch($options['channels']){
959 $this->objects[$id]['info']['ColorSpace']='/DeviceGray';
962 $this->objects[$id]['info']['ColorSpace']='/DeviceRGB';
965 $this->objects[$id]['info']['Filter']='/DCTDecode';
966 $this->objects[$id]['info']['BitsPerComponent']=8;
967 } else if ($options['type']=='png'){
968 $this->objects[$id]['info']['Filter']='/FlateDecode';
969 $this->objects[$id]['info']['DecodeParms']='<< /Predictor 15 /Colors '.$options['ncolor'].' /Columns '.$options['iw'].' /BitsPerComponent '.$options['bitsPerComponent'].'>>';
970 if (strlen($options['pdata'])){
971 $tmp = ' [ /Indexed /DeviceRGB '.(strlen($options['pdata'])/3-1).' ';
973 $this->o_contents($this->numObj,'new');
974 $this->objects[$this->numObj]['c']=$options['pdata'];
975 $tmp.=$this->numObj.' 0 R';
977 $this->objects[$id]['info']['ColorSpace'] = $tmp;
978 if (isset($options['transparency'])){
979 switch($options['transparency']['type']){
981 $tmp=' [ '.$options['transparency']['data'].' '.$options['transparency']['data'].'] ';
982 $this->objects[$id]['info']['Mask'] = $tmp;
987 $this->objects[$id]['info']['ColorSpace']='/'.$options['color'];
989 $this->objects[$id]['info']['BitsPerComponent']=$options['bitsPerComponent'];
991 // assign it a place in the named resource dictionary as an external object, according to
992 // the label passed in with it.
993 $this->o_pages($this->currentNode,'xObject',array('label'=>$options['label'],'objNum'=>$id));
994 // also make sure that we have the right procset object for it.
995 $this->o_procset($this->procsetObjectId,'add','ImageC');
999 $res= "\n".$id." 0 obj\n<<";
1000 foreach($o['info'] as $k=>$v){
1001 $res.="\n/".$k.' '.$v;
1003 if ($this->encrypted){
1004 $this->encryptInit($id);
1005 $tmp = $this->ARC4($tmp);
1007 $res.="\n/Length ".strlen($tmp)." >>\nstream\n".$tmp."\nendstream\nendobj\n";
1014 * encryption object.
1016 function o_encryption($id,$action,$options=''){
1017 if ($action!='new'){
1018 $o =& $this->objects[$id];
1022 // make the new object
1023 $this->objects[$id]=array('t'=>'encryption','info'=>$options);
1024 $this->arc4_objnum=$id;
1025 // figure out the additional paramaters required
1026 $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);
1027 $len = strlen($options['owner']);
1029 $owner = substr($options['owner'],0,32);
1030 } else if ($len<32){
1031 $owner = $options['owner'].substr($pad,0,32-$len);
1033 $owner = $options['owner'];
1035 $len = strlen($options['user']);
1037 $user = substr($options['user'],0,32);
1038 } else if ($len<32){
1039 $user = $options['user'].substr($pad,0,32-$len);
1041 $user = $options['user'];
1043 $tmp = $this->md5_16($owner);
1044 $okey = substr($tmp,0,5);
1045 $this->ARC4_init($okey);
1046 $ovalue=$this->ARC4($user);
1047 $this->objects[$id]['info']['O']=$ovalue;
1048 // now make the u value, phew.
1049 $tmp = $this->md5_16($user.$ovalue.chr($options['p']).chr(255).chr(255).chr(255).$this->fileIdentifier);
1050 $ukey = substr($tmp,0,5);
1052 $this->ARC4_init($ukey);
1053 $this->encryptionKey = $ukey;
1055 $uvalue=$this->ARC4($pad);
1057 $this->objects[$id]['info']['U']=$uvalue;
1058 $this->encryptionKey=$ukey;
1060 // initialize the arc4 array
1063 $res= "\n".$id." 0 obj\n<<";
1064 $res.="\n/Filter /Standard";
1067 $res.="\n/O (".$this->filterText($o['info']['O']).')';
1068 $res.="\n/U (".$this->filterText($o['info']['U']).')';
1069 // and the p-value needs to be converted to account for the twos-complement approach
1070 $o['info']['p'] = (($o['info']['p']^255)+1)*-1;
1071 $res.="\n/P ".($o['info']['p']);
1072 $res.="\n>>\nendobj\n";
1081 * A series of function to implement ARC4 encoding in PHP
1085 * calculate the 16 byte version of the 128 bit md5 digest of the string
1087 function md5_16($string){
1088 $tmp = md5($string);
1090 for ($i=0;$i<=30;$i=$i+2){
1091 $out.=chr(hexdec(substr($tmp,$i,2)));
1097 * initialize the encryption for processing a particular object
1099 function encryptInit($id){
1100 $tmp = $this->encryptionKey;
1102 if (strlen($hex)<6){
1103 $hex = substr('000000',0,6-strlen($hex)).$hex;
1105 $tmp.= chr(hexdec(substr($hex,4,2))).chr(hexdec(substr($hex,2,2))).chr(hexdec(substr($hex,0,2))).chr(0).chr(0);
1106 $key = $this->md5_16($tmp);
1107 $this->ARC4_init(substr($key,0,10));
1111 * initialize the ARC4 encryption
1113 function ARC4_init($key=''){
1115 // setup the control array
1116 if (strlen($key)==0){
1120 while(strlen($k)<256){
1123 $k=substr($k,0,256);
1124 for ($i=0;$i<256;$i++){
1125 $this->arc4 .= chr($i);
1128 for ($i=0;$i<256;$i++){
1129 $t = $this->arc4[$i];
1130 $j = ($j + ord($t) + ord($k[$i]))%256;
1131 $this->arc4[$i]=$this->arc4[$j];
1137 * ARC4 encrypt a text string
1139 function ARC4($text){
1145 for ($i=0;$i<$len;$i++){
1148 $b = ($b+ord($t))%256;
1151 $k = ord($c[(ord($c[$a])+ord($c[$b]))%256]);
1152 $out.=chr(ord($text[$i]) ^ $k);
1159 * functions which can be called to adjust or add to the document
1163 * add a link in the document to an external URL
1165 function addLink($url,$x0,$y0,$x1,$y1){
1167 $info = array('type'=>'link','url'=>$url,'rect'=>array($x0,$y0,$x1,$y1));
1168 $this->o_annotation($this->numObj,'new',$info);
1172 * add a link in the document to an internal destination (ie. within the document)
1174 function addInternalLink($label,$x0,$y0,$x1,$y1){
1176 $info = array('type'=>'ilink','label'=>$label,'rect'=>array($x0,$y0,$x1,$y1));
1177 $this->o_annotation($this->numObj,'new',$info);
1181 * set the encryption of the document
1182 * can be used to turn it on and/or set the passwords which it will have.
1183 * also the functions that the user will have are set here, such as print, modify, add
1185 function setEncryption($userPass='',$ownerPass='',$pc=array()){
1186 $p=bindec(11000000);
1194 foreach($pc as $k=>$v){
1195 if ($v && isset($options[$k])){
1197 } else if (isset($options[$v])){
1201 // implement encryption on the document
1202 if ($this->arc4_objnum == 0){
1203 // then the block does not exist already, add it.
1205 if (strlen($ownerPass)==0){
1206 $ownerPass=$userPass;
1208 $this->o_encryption($this->numObj,'new',array('user'=>$userPass,'owner'=>$ownerPass,'p'=>$p));
1213 * should be used for internal checks, not implemented as yet
1215 function checkAllHere(){
1219 * return the pdf stream as a string returned from the function
1221 function output($debug=0){
1224 // turn compression off
1225 $this->options['compression']=0;
1228 if ($this->arc4_objnum){
1229 $this->ARC4_init($this->encryptionKey);
1232 $this->checkAllHere();
1235 $content="%PDF-1.3\n%âãÏÓ\n";
1236 // $content="%PDF-1.3\n";
1237 $pos=strlen($content);
1238 foreach($this->objects as $k=>$v){
1240 $cont=$this->$tmp($k,'out');
1243 $pos+=strlen($cont);
1245 $content.="\nxref\n0 ".(count($xref)+1)."\n0000000000 65535 f \n";
1246 foreach($xref as $p){
1247 $content.=substr('0000000000',0,10-strlen($p)).$p." 00000 n \n";
1249 $content.="\ntrailer\n << /Size ".(count($xref)+1)."\n /Root 1 0 R\n /Info ".$this->infoObject." 0 R\n";
1250 // if encryption has been applied to this document then add the marker for this dictionary
1251 if ($this->arc4_objnum > 0){
1252 $content .= "/Encrypt ".$this->arc4_objnum." 0 R\n";
1254 if (strlen($this->fileIdentifier)){
1255 $content .= "/ID[<".$this->fileIdentifier."><".$this->fileIdentifier.">]\n";
1257 $content .= " >>\nstartxref\n".$pos."\n%%EOF\n";
1262 * intialize a new document
1263 * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
1264 * this function is called automatically by the constructor function
1268 function newDocument($pageSize=array(0,0,612,792)){
1270 $this->objects = array();
1273 $this->o_catalog($this->numObj,'new');
1276 $this->o_outlines($this->numObj,'new');
1279 $this->o_pages($this->numObj,'new');
1281 $this->o_pages($this->numObj,'mediaBox',$pageSize);
1282 $this->currentNode = 3;
1285 $this->o_procset($this->numObj,'new');
1288 $this->o_info($this->numObj,'new');
1291 $this->o_page($this->numObj,'new');
1293 // need to store the first page id as there is no way to get it to the user during
1295 $this->firstPageId = $this->currentContents;
1299 * open the font file and return a php structure containing it.
1300 * first check if this one has been done before and saved in a form more suited to php
1301 * note that if a php serialized version does not exist it will try and make one, but will
1302 * require write access to the directory to do it... it is MUCH faster to have these serialized
1307 function openFont($font){
1308 // assume that $font contains both the path and perhaps the extension to the file, split them
1309 $pos=strrpos($font,'/');
1314 $dir=substr($font,0,$pos+1);
1315 $name=substr($font,$pos+1);
1318 if (substr($name,-4)=='.afm'){
1319 $name=substr($name,0,strlen($name)-4);
1321 $this->addMessage('openFont: '.$font.' - '.$name);
1322 if (file_exists($dir.'php_'.$name.'.afm')){
1323 $this->addMessage('openFont: php file exists '.$dir.'php_'.$name.'.afm');
1324 $tmp = file($dir.'php_'.$name.'.afm');
1325 $this->fonts[$font]=unserialize($tmp[0]);
1326 if (!isset($this->fonts[$font]['_version_']) || $this->fonts[$font]['_version_']<1){
1327 // if the font file is old, then clear it out and prepare for re-creation
1328 $this->addMessage('openFont: clear out, make way for new version.');
1329 unset($this->fonts[$font]);
1332 if (!isset($this->fonts[$font]) && file_exists($dir.$name.'.afm')){
1333 // then rebuild the php_<font>.afm file from the <font>.afm file
1334 $this->addMessage('openFont: build php file from '.$dir.$name.'.afm');
1336 $file = file($dir.$name.'.afm');
1337 foreach ($file as $rowA){
1339 $pos=strpos($row,' ');
1341 // then there must be some keyword
1342 $key = substr($row,0,$pos);
1349 case 'IsFixedPitch':
1350 case 'CharacterSet':
1351 case 'UnderlinePosition':
1352 case 'UnderlineThickness':
1354 case 'EncodingScheme':
1361 case 'StartCharMetrics':
1362 $data[$key]=trim(substr($row,$pos));
1365 $data[$key]=explode(' ',trim(substr($row,$pos)));
1368 //C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
1369 $bits=explode(';',trim($row));
1371 foreach($bits as $bit){
1372 $bits2 = explode(' ',trim($bit));
1373 if (strlen($bits2[0])){
1374 if (count($bits2)>2){
1375 $dtmp[$bits2[0]]=array();
1376 for ($i=1;$i<count($bits2);$i++){
1377 $dtmp[$bits2[0]][]=$bits2[$i];
1379 } else if (count($bits2)==2){
1380 $dtmp[$bits2[0]]=$bits2[1];
1385 $data['C'][$dtmp['C']]=$dtmp;
1386 $data['C'][$dtmp['N']]=$dtmp;
1388 $data['C'][$dtmp['N']]=$dtmp;
1392 //KPX Adieresis yacute -40
1393 $bits=explode(' ',trim($row));
1394 $data['KPX'][$bits[1]][$bits[2]]=$bits[3];
1399 $data['_version_']=1;
1400 $this->fonts[$font]=$data;
1401 $fp = fopen($dir.'php_'.$name.'.afm','w');
1402 fwrite($fp,serialize($data));
1404 } else if (!isset($this->fonts[$font])){
1405 $this->addMessage('openFont: no font file found');
1406 // echo 'Font not Found '.$font;
1411 * if the font is not loaded then load it and make the required object
1412 * else just make it the current font
1413 * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding'
1414 * note that encoding='none' will need to be used for symbolic fonts
1415 * and 'differences' => an array of mappings between numbers 0->255 and character names.
1418 function selectFont($fontName,$encoding='',$set=1){
1419 if (!isset($this->fonts[$fontName])){
1421 $this->openFont($fontName);
1422 if (isset($this->fonts[$fontName])){
1425 $pos=strrpos($fontName,'/');
1426 // $dir=substr($fontName,0,$pos+1);
1427 $name=substr($fontName,$pos+1);
1428 if (substr($name,-4)=='.afm'){
1429 $name=substr($name,0,strlen($name)-4);
1431 $options=array('name'=>$name);
1432 if (is_array($encoding)){
1433 // then encoding and differences might be set
1434 if (isset($encoding['encoding'])){
1435 $options['encoding']=$encoding['encoding'];
1437 if (isset($encoding['differences'])){
1438 $options['differences']=$encoding['differences'];
1440 } else if (strlen($encoding)){
1441 // then perhaps only the encoding has been set
1442 $options['encoding']=$encoding;
1444 $fontObj = $this->numObj;
1445 $this->o_font($this->numObj,'new',$options);
1446 $this->fonts[$fontName]['fontNum']=$this->numFonts;
1447 // if this is a '.afm' font, and there is a '.pfa' file to go with it ( as there
1448 // should be for all non-basic fonts), then load it into an object and put the
1449 // references into the font object
1450 $basefile = substr($fontName,0,strlen($fontName)-4);
1451 if (file_exists($basefile.'.pfb')){
1453 } else if (file_exists($basefile.'.ttf')){
1458 $fbfile = $basefile.'.'.$fbtype;
1460 // $pfbfile = substr($fontName,0,strlen($fontName)-4).'.pfb';
1461 // $ttffile = substr($fontName,0,strlen($fontName)-4).'.ttf';
1462 $this->addMessage('selectFont: checking for - '.$fbfile);
1463 if (substr($fontName,-4)=='.afm' && strlen($fbtype) ){
1464 $adobeFontName = $this->fonts[$fontName]['FontName'];
1465 // $fontObj = $this->numObj;
1466 $this->addMessage('selectFont: adding font file - '.$fbfile.' - '.$adobeFontName);
1467 // find the array of fond widths, and put that into an object.
1471 foreach ($this->fonts[$fontName]['C'] as $num=>$d){
1472 if (intval($num)>0 || $num=='0'){
1473 if ($lastChar>0 && $num>$lastChar+1){
1474 for($i=$lastChar+1;$i<$num;$i++){
1478 $widths[] = $d['WX'];
1479 if ($firstChar==-1){
1485 // also need to adjust the widths for the differences array
1486 if (isset($options['differences'])){
1487 foreach($options['differences'] as $charNum=>$charName){
1488 if ($charNum>$lastChar){
1489 for($i=$lastChar+1;$i<=$charNum;$i++){
1494 if (isset($this->fonts[$fontName]['C'][$charName])){
1495 $widths[$charNum-$firstChar]=$this->fonts[$fontName]['C'][$charName]['WX'];
1499 $this->addMessage('selectFont: FirstChar='.$firstChar);
1500 $this->addMessage('selectFont: LastChar='.$lastChar);
1502 $this->o_contents($this->numObj,'new','raw');
1503 $this->objects[$this->numObj]['c'].='[';
1504 foreach($widths as $width){
1505 $this->objects[$this->numObj]['c'].=' '.$width;
1507 $this->objects[$this->numObj]['c'].=' ]';
1508 $widthid = $this->numObj;
1510 // load the pfb file, and put that into an object too.
1511 // note that pdf supports only binary format type 1 font files, though there is a
1512 // simple utility to convert them from pfa to pfb.
1513 $fp = fopen($fbfile,'rb');
1514 $tmp = get_magic_quotes_runtime();
1515 set_magic_quotes_runtime(0);
1516 $data = fread($fp,filesize($fbfile));
1517 set_magic_quotes_runtime($tmp);
1520 // create the font descriptor
1522 $fontDescriptorId = $this->numObj;
1524 $pfbid = $this->numObj;
1525 // determine flags (more than a little flakey, hopefully will not matter much)
1527 if ($this->fonts[$fontName]['ItalicAngle']!=0){ $flags+=pow(2,6); }
1528 if ($this->fonts[$fontName]['IsFixedPitch']=='true'){ $flags+=1; }
1529 $flags+=pow(2,5); // assume non-sybolic
1531 $list = array('Ascent'=>'Ascender','CapHeight'=>'CapHeight','Descent'=>'Descender','FontBBox'=>'FontBBox','ItalicAngle'=>'ItalicAngle');
1534 ,'FontName'=>$adobeFontName
1535 ,'StemV'=>100 // don't know what the value for this should be!
1537 foreach($list as $k=>$v){
1538 if (isset($this->fonts[$fontName][$v])){
1539 $fdopt[$k]=$this->fonts[$fontName][$v];
1543 if ($fbtype=='pfb'){
1544 $fdopt['FontFile']=$pfbid;
1545 } else if ($fbtype=='ttf'){
1546 $fdopt['FontFile2']=$pfbid;
1548 $this->o_fontDescriptor($fontDescriptorId,'new',$fdopt);
1550 // embed the font program
1551 $this->o_contents($this->numObj,'new');
1552 $this->objects[$pfbid]['c'].=$data;
1553 // determine the cruicial lengths within this file
1554 if ($fbtype=='pfb'){
1555 $l1 = strpos($data,'eexec')+6;
1556 $l2 = strpos($data,'00000000')-$l1;
1557 $l3 = strlen($data)-$l2-$l1;
1558 $this->o_contents($this->numObj,'add',array('Length1'=>$l1,'Length2'=>$l2,'Length3'=>$l3));
1559 } else if ($fbtype=='ttf'){
1560 $l1 = strlen($data);
1561 $this->o_contents($this->numObj,'add',array('Length1'=>$l1));
1565 // tell the font object about all this new stuff
1566 $tmp = array('BaseFont'=>$adobeFontName,'Widths'=>$widthid
1567 ,'FirstChar'=>$firstChar,'LastChar'=>$lastChar
1568 ,'FontDescriptor'=>$fontDescriptorId);
1569 if ($fbtype=='ttf'){
1570 $tmp['SubType']='TrueType';
1572 $this->addMessage('adding extra info to font.('.$fontObj.')');
1573 foreach($tmp as $fk=>$fv){
1574 $this->addMessage($fk." : ".$fv);
1576 $this->o_font($fontObj,'add',$tmp);
1579 $this->addMessage('selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts');
1583 // also set the differences here, note that this means that these will take effect only the
1584 //first time that a font is selected, else they are ignored
1585 if (isset($options['differences'])){
1586 $this->fonts[$fontName]['differences']=$options['differences'];
1590 if ($set && isset($this->fonts[$fontName])){
1591 // so if for some reason the font was not set in the last one then it will not be selected
1592 $this->currentBaseFont=$fontName;
1593 // the next line means that if a new font is selected, then the current text state will be
1594 // applied to it as well.
1595 $this->setCurrentFont();
1597 return $this->currentFontNum;
1601 * sets up the current font, based on the font families, and the current text state
1602 * note that this system is quite flexible, a <b><i> font can be completely different to a
1603 * <i><b> font, and even <b><b> will have to be defined within the family to have meaning
1604 * This function is to be called whenever the currentTextState is changed, it will update
1605 * the currentFont setting to whatever the appropriatte family one is.
1606 * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
1607 * This function will change the currentFont to whatever it should be, but will not change the
1612 function setCurrentFont(){
1613 if (strlen($this->currentBaseFont)==0){
1614 // then assume an initial font
1615 $this->selectFont('./fonts/Helvetica.afm');
1617 $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1);
1618 if (strlen($this->currentTextState)
1619 && isset($this->fontFamilies[$cf])
1620 && isset($this->fontFamilies[$cf][$this->currentTextState])){
1621 // then we are in some state or another
1622 // and this font has a family, and the current setting exists within it
1623 // select the font, then return it
1624 $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState];
1625 $this->selectFont($nf,'',0);
1626 $this->currentFont = $nf;
1627 $this->currentFontNum = $this->fonts[$nf]['fontNum'];
1629 // the this font must not have the right family member for the current state
1630 // simply assume the base font
1631 $this->currentFont = $this->currentBaseFont;
1632 $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
1637 * function for the user to find out what the id is of the first page that was created during
1638 * startup - useful if they wish to add something to it later.
1640 function getFirstPageId(){
1641 return $this->firstPageId;
1645 * add content to the currently active object
1649 function addContent($content){
1650 $this->objects[$this->currentContents]['c'].=$content;
1654 * sets the colour for fill operations
1656 function setColor($r,$g,$b,$force=0){
1657 if ($r>=0 && ($force || $r!=$this->currentColour['r'] || $g!=$this->currentColour['g'] || $b!=$this->currentColour['b'])){
1658 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$r).' '.sprintf('%.3f',$g).' '.sprintf('%.3f',$b).' rg';
1659 $this->currentColour=array('r'=>$r,'g'=>$g,'b'=>$b);
1664 * sets the colour for stroke operations
1666 function setStrokeColor($r,$g,$b,$force=0){
1667 if ($r>=0 && ($force || $r!=$this->currentStrokeColour['r'] || $g!=$this->currentStrokeColour['g'] || $b!=$this->currentStrokeColour['b'])){
1668 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$r).' '.sprintf('%.3f',$g).' '.sprintf('%.3f',$b).' RG';
1669 $this->currentStrokeColour=array('r'=>$r,'g'=>$g,'b'=>$b);
1674 * draw a line from one set of coordinates to another
1676 function line($x1,$y1,$x2,$y2){
1677 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' m '.sprintf('%.3f',$x2).' '.sprintf('%.3f',$y2).' l S';
1681 * draw a bezier curve based on 4 control points
1683 function curve($x0,$y0,$x1,$y1,$x2,$y2,$x3,$y3){
1684 // in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
1685 // as the control points for the curve.
1686 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x0).' '.sprintf('%.3f',$y0).' m '.sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1);
1687 $this->objects[$this->currentContents]['c'].= ' '.sprintf('%.3f',$x2).' '.sprintf('%.3f',$y2).' '.sprintf('%.3f',$x3).' '.sprintf('%.3f',$y3).' c S';
1691 * draw a part of an ellipse
1693 function partEllipse($x0,$y0,$astart,$afinish,$r1,$r2=0,$angle=0,$nSeg=8){
1694 $this->ellipse($x0,$y0,$r1,$r2,$angle,$nSeg,$astart,$afinish,0);
1698 * draw a filled ellipse
1700 function filledEllipse($x0,$y0,$r1,$r2=0,$angle=0,$nSeg=8,$astart=0,$afinish=360){
1701 return $this->ellipse($x0,$y0,$r1,$r2=0,$angle,$nSeg,$astart,$afinish,1,1);
1706 * note that the part and filled ellipse are just special cases of this function
1708 * draws an ellipse in the current line style
1709 * centered at $x0,$y0, radii $r1,$r2
1710 * if $r2 is not set, then a circle is drawn
1711 * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
1712 * pretty crappy shape at 2, as we are approximating with bezier curves.
1714 function ellipse($x0,$y0,$r1,$r2=0,$angle=0,$nSeg=8,$astart=0,$afinish=360,$close=1,$fill=0){
1725 $astart = deg2rad((float)$astart);
1726 $afinish = deg2rad((float)$afinish);
1727 $totalAngle =$afinish-$astart;
1729 $dt = $totalAngle/$nSeg;
1733 $a = -1*deg2rad((float)$angle);
1735 $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
1736 $tmp .= sprintf('%.3f',$x0).' '.sprintf('%.3f',$y0).' cm';
1737 $this->objects[$this->currentContents]['c'].= $tmp;
1743 $a0 = $x0+$r1*cos($t1);
1744 $b0 = $y0+$r2*sin($t1);
1745 $c0 = -$r1*sin($t1);
1748 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$a0).' '.sprintf('%.3f',$b0).' m ';
1749 for ($i=1;$i<=$nSeg;$i++){
1750 // draw this bit of the total curve
1751 $t1 = $i*$dt+$astart;
1752 $a1 = $x0+$r1*cos($t1);
1753 $b1 = $y0+$r2*sin($t1);
1754 $c1 = -$r1*sin($t1);
1756 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',($a0+$c0*$dtm)).' '.sprintf('%.3f',($b0+$d0*$dtm));
1757 $this->objects[$this->currentContents]['c'].= ' '.sprintf('%.3f',($a1-$c1*$dtm)).' '.sprintf('%.3f',($b1-$d1*$dtm)).' '.sprintf('%.3f',$a1).' '.sprintf('%.3f',$b1).' c';
1764 $this->objects[$this->currentContents]['c'].=' f';
1767 $this->objects[$this->currentContents]['c'].=' s'; // small 's' signifies closing the path as well
1769 $this->objects[$this->currentContents]['c'].=' S';
1773 $this->objects[$this->currentContents]['c'].=' Q';
1778 * this sets the line drawing style.
1779 * width, is the thickness of the line in user units
1780 * cap is the type of cap to put on the line, values can be 'butt','round','square'
1781 * where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the
1783 * join can be 'miter', 'round', 'bevel'
1784 * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
1785 * on and off dashes.
1786 * (2) represents 2 on, 2 off, 2 on , 2 off ...
1787 * (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
1788 * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
1790 function setLineStyle($width=1,$cap='',$join='',$dash='',$phase=0){
1792 // this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
1795 $string.= $width.' w';
1797 $ca = array('butt'=>0,'round'=>1,'square'=>2);
1798 if (isset($ca[$cap])){
1799 $string.= ' '.$ca[$cap].' J';
1801 $ja = array('miter'=>0,'round'=>1,'bevel'=>2);
1802 if (isset($ja[$join])){
1803 $string.= ' '.$ja[$join].' j';
1805 if (is_array($dash)){
1807 foreach ($dash as $len){
1810 $string.= ' ] '.$phase.' d';
1812 $this->currentLineStyle = $string;
1813 $this->objects[$this->currentContents]['c'].="\n".$string;
1817 * draw a polygon, the syntax for this is similar to the GD polygon command
1819 function polygon($p,$np,$f=0){
1820 $this->objects[$this->currentContents]['c'].="\n";
1821 $this->objects[$this->currentContents]['c'].=sprintf('%.3f',$p[0]).' '.sprintf('%.3f',$p[1]).' m ';
1822 for ($i=2;$i<$np*2;$i=$i+2){
1823 $this->objects[$this->currentContents]['c'].= sprintf('%.3f',$p[$i]).' '.sprintf('%.3f',$p[$i+1]).' l ';
1826 $this->objects[$this->currentContents]['c'].=' f';
1828 $this->objects[$this->currentContents]['c'].=' S';
1833 * a filled rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
1834 * the coordinates of the upper-right corner
1836 function filledRectangle($x1,$y1,$width,$height){
1837 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' '.sprintf('%.3f',$width).' '.sprintf('%.3f',$height).' re f';
1841 * draw a rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
1842 * the coordinates of the upper-right corner
1844 function rectangle($x1,$y1,$width,$height){
1845 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' '.sprintf('%.3f',$width).' '.sprintf('%.3f',$height).' re S';
1849 * add a new page to the document
1850 * this also makes the new page the current active object
1852 function newPage($insert=0,$id=0,$pos='after'){
1854 // if there is a state saved, then go up the stack closing them
1855 // then on the new page, re-open them with the right setings
1857 if ($this->nStateStack){
1858 for ($i=$this->nStateStack;$i>=1;$i--){
1859 $this->restoreState($i);
1865 // the id from the ezPdf class is the od of the contents of the page, not the page object itself
1866 // query that object to find the parent
1867 $rid = $this->objects[$id]['onPage'];
1868 $opt= array('rid'=>$rid,'pos'=>$pos);
1869 $this->o_page($this->numObj,'new',$opt);
1871 $this->o_page($this->numObj,'new');
1873 // if there is a stack saved, then put that onto the page
1874 if ($this->nStateStack){
1875 for ($i=1;$i<=$this->nStateStack;$i++){
1876 $this->saveState($i);
1879 // and if there has been a stroke or fill colour set, then transfer them
1880 if ($this->currentColour['r']>=0){
1881 $this->setColor($this->currentColour['r'],$this->currentColour['g'],$this->currentColour['b'],1);
1883 if ($this->currentStrokeColour['r']>=0){
1884 $this->setStrokeColor($this->currentStrokeColour['r'],$this->currentStrokeColour['g'],$this->currentStrokeColour['b'],1);
1887 // if there is a line style set, then put this in too
1888 if (strlen($this->currentLineStyle)){
1889 $this->objects[$this->currentContents]['c'].="\n".$this->currentLineStyle;
1892 // the call to the o_page object set currentContents to the present page, so this can be returned as the page id
1893 return $this->currentContents;
1897 * output the pdf code, streaming it to the browser
1898 * the relevant headers are set so that hopefully the browser will recognise it
1900 function stream($options=''){
1901 // setting the options allows the adjustment of the headers
1902 // values at the moment are:
1903 // 'Content-Disposition'=>'filename' - sets the filename, though not too sure how well this will
1904 // work as in my trial the browser seems to use the filename of the php file with .pdf on the end
1905 // 'Accept-Ranges'=>1 or 0 - if this is not set to 1, then this header is not included, off by default
1906 // this header seems to have caused some problems despite tha fact that it is supposed to solve
1907 // them, so I am leaving it off by default.
1908 // 'compress'=> 1 or 0 - apply content stream compression, this is on (1) by default
1909 if (!is_array($options)){
1912 if ( isset($options['compress']) && $options['compress']==0){
1913 $tmp = $this->output(1);
1915 $tmp = $this->output();
1917 header("Content-type: application/pdf");
1918 header("Content-Length: ".strlen(ltrim($tmp)));
1919 $fileName = (isset($options['Content-Disposition'])?$options['Content-Disposition']:'file.pdf');
1920 header("Content-Disposition: inline; filename=".$fileName);
1921 if (isset($options['Accept-Ranges']) && $options['Accept-Ranges']==1){
1922 header("Accept-Ranges: ".strlen(ltrim($tmp)));
1928 * return the height in units of the current font in the given size
1930 function getFontHeight($size){
1931 if (!$this->numFonts){
1932 $this->selectFont('./fonts/Helvetica');
1934 // for the current font, and the given size, what is the height of the font in user units
1935 $h = $this->fonts[$this->currentFont]['FontBBox'][3]-$this->fonts[$this->currentFont]['FontBBox'][1];
1936 return $size*$h/1000;
1940 * return the font decender, this will normally return a negative number
1941 * if you add this number to the baseline, you get the level of the bottom of the font
1942 * it is in the pdf user units
1944 function getFontDecender($size){
1945 // note that this will most likely return a negative value
1946 if (!$this->numFonts){
1947 $this->selectFont('./fonts/Helvetica');
1949 $h = $this->fonts[$this->currentFont]['FontBBox'][1];
1950 return $size*$h/1000;
1954 * filter the text, this is applied to all text just before being inserted into the pdf document
1955 * it escapes the various things that need to be escaped, and so on
1959 function filterText($text){
1960 $text = str_replace('\\','\\\\',$text);
1961 $text = str_replace('(','\(',$text);
1962 $text = str_replace(')','\)',$text);
1963 $text = str_replace('<','<',$text);
1964 $text = str_replace('>','>',$text);
1965 $text = str_replace(''','\'',$text);
1966 $text = str_replace('"','"',$text);
1967 $text = str_replace('&','&',$text);
1973 * given a start position and information about how text is to be laid out, calculate where
1974 * on the page the text will end
1978 function PRVTgetTextPosition($x,$y,$angle,$size,$wa,$text){
1979 // given this information return an array containing x and y for the end position as elements 0 and 1
1980 $w = $this->getTextWidth($size,$text);
1981 // need to adjust for the number of spaces in this text
1982 $words = explode(' ',$text);
1983 $nspaces=count($words)-1;
1985 $a = deg2rad((float)$angle);
1986 return array(cos($a)*$w+$x,-sin($a)*$w+$y);
1990 * wrapper function for PRVTcheckTextDirective1
1994 function PRVTcheckTextDirective(&$text,$i,&$f){
1997 return $this->PRVTcheckTextDirective1($text,$i,$f,0,$x,$y);
2001 * checks if the text stream contains a control directive
2002 * if so then makes some changes and returns the number of characters involved in the directive
2003 * this has been re-worked to include everything neccesary to fins the current writing point, so that
2004 * the location can be sent to the callback function if required
2005 * if the directive does not require a font change, then $f should be set to 0
2009 function PRVTcheckTextDirective1(&$text,$i,&$f,$final,&$x,&$y,$size=0,$angle=0,$wordSpaceAdjust=0){
2012 if ($text[$j]=='<'){
2017 if (strlen($text) <= $j){
2024 if ($text[$j]=='>'){
2025 $p = strrpos($this->currentTextState,$text[$j-1]);
2027 // then there is one to remove
2028 $this->currentTextState = substr($this->currentTextState,0,$p).substr($this->currentTextState,$p+1);
2034 // this this might be a callback function
2036 $k = strpos($text,'>',$j);
2037 if ($k!==false && $text[$j]==':'){
2038 // then this will be treated as a callback directive
2039 $directive = $k-$i+1;
2041 // split the remainder on colons to get the function name and the paramater
2042 $tmp = substr($text,$j+1,$k-$j-1);
2043 $b1 = strpos($tmp,':');
2045 $func = substr($tmp,0,$b1);
2046 $parm = substr($tmp,$b1+1);
2051 if (!isset($func) || !strlen(trim($func))){
2054 // only call the function if this is the final call
2056 // need to assess the text position, calculate the text width to this point
2057 // can use getTextWidth to find the text width I think
2058 $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,substr($text,0,$i));
2059 $info = array('x'=>$tmp[0],'y'=>$tmp[1],'angle'=>$angle,'status'=>'end','p'=>$parm,'nCallback'=>$this->nCallback);
2062 $ret = $this->$func($info);
2063 if (is_array($ret)){
2064 // then the return from the callback function could set the position, to start with, later will do font colour, and font
2065 foreach($ret as $rk=>$rv){
2074 // also remove from to the stack
2075 // for simplicity, just take from the end, fix this another day
2077 if ($this->nCallback<0){
2089 if ($text[$j]=='>'){
2090 $this->currentTextState.=$text[$j-1];
2097 // this this might be a callback function
2099 $k = strpos($text,'>',$j);
2100 if ($k!==false && $text[$j]==':'){
2101 // then this will be treated as a callback directive
2102 $directive = $k-$i+1;
2104 // split the remainder on colons to get the function name and the paramater
2105 // $bits = explode(':',substr($text,$j+1,$k-$j-1));
2106 $tmp = substr($text,$j+1,$k-$j-1);
2107 $b1 = strpos($tmp,':');
2109 $func = substr($tmp,0,$b1);
2110 $parm = substr($tmp,$b1+1);
2115 if (!isset($func) || !strlen(trim($func))){
2118 // only call the function if this is the final call, ie, the one actually doing printing, not measurement
2120 // need to assess the text position, calculate the text width to this point
2121 // can use getTextWidth to find the text width I think
2122 // also add the text height and decender
2123 $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,substr($text,0,$i));
2124 $info = array('x'=>$tmp[0],'y'=>$tmp[1],'angle'=>$angle,'status'=>'start','p'=>$parm,'f'=>$func,'height'=>$this->getFontHeight($size),'decender'=>$this->getFontDecender($size));
2127 if (!isset($noClose) || !$noClose){
2128 // only add to the stack if this is a small 'c', therefore is a start-stop pair
2130 $info['nCallback']=$this->nCallback;
2131 $this->callback[$this->nCallback]=$info;
2133 $ret = $this->$func($info);
2134 if (is_array($ret)){
2135 // then the return from the callback function could set the position, to start with, later will do font colour, and font
2136 foreach($ret as $rk=>$rv){
2155 * add text to the document, at a specified location, size and angle on the page
2157 function addText($x,$y,$size,$text,$angle=0,$wordSpaceAdjust=0){
2158 if (!$this->numFonts){$this->selectFont('./fonts/Helvetica');}
2160 // if there are any open callbacks, then they should be called, to show the start of the line
2161 if ($this->nCallback>0){
2162 for ($i=$this->nCallback;$i>0;$i--){
2163 // call each function
2164 $info = array('x'=>$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']);
2165 $func = $this->callback[$i]['f'];
2166 $this->$func($info);
2170 $this->objects[$this->currentContents]['c'].="\n".'BT '.sprintf('%.3f',$x).' '.sprintf('%.3f',$y).' Td';
2172 $a = deg2rad((float)$angle);
2174 $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
2175 $tmp .= sprintf('%.3f',$x).' '.sprintf('%.3f',$y).' Tm';
2176 $this->objects[$this->currentContents]['c'] .= $tmp;
2178 if ($wordSpaceAdjust!=0 || $wordSpaceAdjust != $this->wordSpaceAdjust){
2179 $this->wordSpaceAdjust=$wordSpaceAdjust;
2180 $this->objects[$this->currentContents]['c'].=' '.sprintf('%.3f',$wordSpaceAdjust).' Tw';
2184 for ($i=0;$i<$len;$i++){
2186 $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2188 // then we should write what we need to
2190 $part = substr($text,$start,$i-$start);
2191 $this->objects[$this->currentContents]['c'].=' /F'.$this->currentFontNum.' '.sprintf('%.1f',$size).' Tf ';
2192 $this->objects[$this->currentContents]['c'].=' ('.$this->filterText($part).') Tj';
2195 // then there was nothing drastic done here, restore the contents
2196 $this->setCurrentFont();
2198 $this->objects[$this->currentContents]['c'] .= ' ET';
2202 $directive = $this->PRVTcheckTextDirective1($text,$i,$f,1,$xp,$yp,$size,$angle,$wordSpaceAdjust);
2204 // restart the text object
2206 $this->objects[$this->currentContents]['c'].="\n".'BT '.sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Td';
2208 $a = deg2rad((float)$angle);
2210 $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
2211 $tmp .= sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Tm';
2212 $this->objects[$this->currentContents]['c'] .= $tmp;
2214 if ($wordSpaceAdjust!=0 || $wordSpaceAdjust != $this->wordSpaceAdjust){
2215 $this->wordSpaceAdjust=$wordSpaceAdjust;
2216 $this->objects[$this->currentContents]['c'].=' '.sprintf('%.3f',$wordSpaceAdjust).' Tw';
2219 // and move the writing point to the next piece of text
2226 $part = substr($text,$start);
2227 $this->objects[$this->currentContents]['c'].=' /F'.$this->currentFontNum.' '.sprintf('%.1f',$size).' Tf ';
2228 $this->objects[$this->currentContents]['c'].=' ('.$this->filterText($part).') Tj';
2230 $this->objects[$this->currentContents]['c'].=' ET';
2232 // if there are any open callbacks, then they should be called, to show the end of the line
2233 if ($this->nCallback>0){
2234 for ($i=$this->nCallback;$i>0;$i--){
2235 // call each function
2236 $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,$text);
2237 $info = array('x'=>$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']);
2238 $func = $this->callback[$i]['f'];
2239 $this->$func($info);
2246 * calculate how wide a given text string will be on a page, at a given size.
2247 * this can be called externally, but is alse used by the other class functions
2249 function getTextWidth($size,$text){
2250 // this function should not change any of the settings, though it will need to
2251 // track any directives which change during calculation, so copy them at the start
2252 // and put them back at the end.
2253 $store_currentTextState = $this->currentTextState;
2255 if (!$this->numFonts){
2256 $this->selectFont('./fonts/Helvetica');
2259 // converts a number or a float to a string so it can get the width
2262 // hmm, this is where it all starts to get tricky - use the font information to
2263 // calculate the width of each character, add them up and convert to user units
2266 $cf = $this->currentFont;
2267 for ($i=0;$i<$len;$i++){
2269 $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2272 $this->setCurrentFont();
2273 $cf = $this->currentFont;
2277 $char=ord($text[$i]);
2278 if (isset($this->fonts[$cf]['differences'][$char])){
2279 // then this character is being replaced by another
2280 $name = $this->fonts[$cf]['differences'][$char];
2281 if (isset($this->fonts[$cf]['C'][$name]['WX'])){
2282 $w+=$this->fonts[$cf]['C'][$name]['WX'];
2284 } else if (isset($this->fonts[$cf]['C'][$char]['WX'])){
2285 $w+=$this->fonts[$cf]['C'][$char]['WX'];
2290 $this->currentTextState = $store_currentTextState;
2291 $this->setCurrentFont();
2293 return $w*$size/1000;
2297 * do a part of the calculation for sorting out the justification of the text
2301 function PRVTadjustWrapText($text,$actual,$width,&$x,&$adjust,$justification){
2302 switch ($justification){
2311 $x+=($width-$actual)/2;
2314 // count the number of words
2315 $words = explode(' ',$text);
2316 $nspaces=count($words)-1;
2318 $adjust = ($width-$actual)/$nspaces;
2327 * add text to the page, but ensure that it fits within a certain width
2328 * if it does not fit then put in as much as possible, splitting at word boundaries
2329 * and return the remainder.
2330 * justification and angle can also be specified for the text
2332 function addTextWrap($x,$y,$width,$size,$text,$justification='left',$angle=0,$test=0){
2333 // this will display the text, and if it goes beyond the width $width, will backtrack to the
2334 // previous space or hyphen, and return the remainder of the text.
2336 // $justification can be set to 'left','right','center','centre','full'
2338 // need to store the initial text state, as this will change during the width calculation
2339 // but will need to be re-set before printing, so that the chars work out right
2340 $store_currentTextState = $this->currentTextState;
2342 if (!$this->numFonts){$this->selectFont('./fonts/Helvetica');}
2344 // error, pretend it printed ok, otherwise risking a loop
2351 $cf = $this->currentFont;
2352 $tw = $width/$size*1000;
2353 for ($i=0;$i<$len;$i++){
2355 $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2358 $this->setCurrentFont();
2359 $cf = $this->currentFont;
2363 $cOrd = ord($text[$i]);
2364 if (isset($this->fonts[$cf]['differences'][$cOrd])){
2365 // then this character is being replaced by another
2366 $cOrd2 = $this->fonts[$cf]['differences'][$cOrd];
2371 if (isset($this->fonts[$cf]['C'][$cOrd2]['WX'])){
2372 $w+=$this->fonts[$cf]['C'][$cOrd2]['WX'];
2375 // then we need to truncate this line
2377 // then we have somewhere that we can split :)
2378 if ($text[$break]==' '){
2379 $tmp = substr($text,0,$break);
2381 $tmp = substr($text,0,$break+1);
2384 $this->PRVTadjustWrapText($tmp,$breakWidth,$width,$x,$adjust,$justification);
2386 // reset the text state
2387 $this->currentTextState = $store_currentTextState;
2388 $this->setCurrentFont();
2390 $this->addText($x,$y,$size,$tmp,$angle,$adjust);
2392 return substr($text,$break+1);
2394 // just split before the current character
2395 $tmp = substr($text,0,$i);
2397 $ctmp=ord($text[$i]);
2398 if (isset($this->fonts[$cf]['differences'][$ctmp])){
2399 $ctmp=$this->fonts[$cf]['differences'][$ctmp];
2401 $tmpw=($w-$this->fonts[$cf]['C'][$ctmp]['WX'])*$size/1000;
2402 $this->PRVTadjustWrapText($tmp,$tmpw,$width,$x,$adjust,$justification);
2403 // reset the text state
2404 $this->currentTextState = $store_currentTextState;
2405 $this->setCurrentFont();
2407 $this->addText($x,$y,$size,$tmp,$angle,$adjust);
2409 return substr($text,$i);
2412 if ($text[$i]=='-'){
2414 $breakWidth = $w*$size/1000;
2416 if ($text[$i]==' '){
2418 $ctmp=ord($text[$i]);
2419 if (isset($this->fonts[$cf]['differences'][$ctmp])){
2420 $ctmp=$this->fonts[$cf]['differences'][$ctmp];
2422 $breakWidth = ($w-$this->fonts[$cf]['C'][$ctmp]['WX'])*$size/1000;
2426 // then there was no need to break this line
2427 if ($justification=='full'){
2428 $justification='left';
2431 $tmpw=$w*$size/1000;
2432 $this->PRVTadjustWrapText($text,$tmpw,$width,$x,$adjust,$justification);
2433 // reset the text state
2434 $this->currentTextState = $store_currentTextState;
2435 $this->setCurrentFont();
2437 $this->addText($x,$y,$size,$text,$angle,$adjust,$angle);
2443 * this will be called at a new page to return the state to what it was on the
2444 * end of the previous page, before the stack was closed down
2445 * This is to get around not being able to have open 'q' across pages
2448 function saveState($pageEnd=0){
2450 // this will be called at a new page to return the state to what it was on the
2451 // end of the previous page, before the stack was closed down
2452 // This is to get around not being able to have open 'q' across pages
2453 $opt = $this->stateStack[$pageEnd]; // ok to use this as stack starts numbering at 1
2454 $this->setColor($opt['col']['r'],$opt['col']['g'],$opt['col']['b'],1);
2455 $this->setStrokeColor($opt['str']['r'],$opt['str']['g'],$opt['str']['b'],1);
2456 $this->objects[$this->currentContents]['c'].="\n".$opt['lin'];
2457 // $this->currentLineStyle = $opt['lin'];
2459 $this->nStateStack++;
2460 $this->stateStack[$this->nStateStack]=array(
2461 'col'=>$this->currentColour
2462 ,'str'=>$this->currentStrokeColour
2463 ,'lin'=>$this->currentLineStyle
2466 $this->objects[$this->currentContents]['c'].="\nq";
2470 * restore a previously saved state
2472 function restoreState($pageEnd=0){
2474 $n = $this->nStateStack;
2475 $this->currentColour = $this->stateStack[$n]['col'];
2476 $this->currentStrokeColour = $this->stateStack[$n]['str'];
2477 $this->objects[$this->currentContents]['c'].="\n".$this->stateStack[$n]['lin'];
2478 $this->currentLineStyle = $this->stateStack[$n]['lin'];
2479 unset($this->stateStack[$n]);
2480 $this->nStateStack--;
2482 $this->objects[$this->currentContents]['c'].="\nQ";
2486 * make a loose object, the output will go into this object, until it is closed, then will revert to
2488 * this object will not appear until it is included within a page.
2489 * the function will return the object number
2491 function openObject(){
2493 $this->stack[$this->nStack]=array('c'=>$this->currentContents,'p'=>$this->currentPage);
2494 // add a new object of the content type, to hold the data flow
2496 $this->o_contents($this->numObj,'new');
2497 $this->currentContents=$this->numObj;
2498 $this->looseObjects[$this->numObj]=1;
2500 return $this->numObj;
2504 * open an existing object for editing
2506 function reopenObject($id){
2508 $this->stack[$this->nStack]=array('c'=>$this->currentContents,'p'=>$this->currentPage);
2509 $this->currentContents=$id;
2510 // also if this object is the primary contents for a page, then set the current page to its parent
2511 if (isset($this->objects[$id]['onPage'])){
2512 $this->currentPage = $this->objects[$id]['onPage'];
2519 function closeObject(){
2520 // close the object, as long as there was one open in the first place, which will be indicated by
2521 // an objectId on the stack.
2522 if ($this->nStack>0){
2523 $this->currentContents=$this->stack[$this->nStack]['c'];
2524 $this->currentPage=$this->stack[$this->nStack]['p'];
2526 // easier to probably not worry about removing the old entries, they will be overwritten
2527 // if there are new ones.
2532 * stop an object from appearing on pages from this point on
2534 function stopObject($id){
2535 // if an object has been appearing on pages up to now, then stop it, this page will
2536 // be the last one that could contian it.
2537 if (isset($this->addLooseObjects[$id])){
2538 $this->addLooseObjects[$id]='';
2543 * after an object has been created, it wil only show if it has been added, using this function.
2545 function addObject($id,$options='add'){
2546 // add the specified object to the page
2547 if (isset($this->looseObjects[$id]) && $this->currentContents!=$id){
2548 // then it is a valid object, and it is not being added to itself
2551 // then this object is to be added to this page (done in the next block) and
2552 // all future new pages.
2553 $this->addLooseObjects[$id]='all';
2555 if (isset($this->objects[$this->currentContents]['onPage'])){
2556 // then the destination contents is the primary for the page
2557 // (though this object is actually added to that page)
2558 $this->o_page($this->objects[$this->currentContents]['onPage'],'content',$id);
2562 $this->addLooseObjects[$id]='even';
2563 $pageObjectId=$this->objects[$this->currentContents]['onPage'];
2564 if ($this->objects[$pageObjectId]['info']['pageNum']%2==0){
2565 $this->addObject($id); // hacky huh :)
2569 $this->addLooseObjects[$id]='odd';
2570 $pageObjectId=$this->objects[$this->currentContents]['onPage'];
2571 if ($this->objects[$pageObjectId]['info']['pageNum']%2==1){
2572 $this->addObject($id); // hacky huh :)
2576 $this->addLooseObjects[$id]='all';
2579 $this->addLooseObjects[$id]='even';
2582 $this->addLooseObjects[$id]='odd';
2589 * add content to the documents info object
2591 function addInfo($label,$value=0){
2592 // this will only work if the label is one of the valid ones.
2593 // modify this so that arrays can be passed as well.
2594 // if $label is an array then assume that it is key=>value pairs
2595 // else assume that they are both scalar, anything else will probably error
2596 if (is_array($label)){
2597 foreach ($label as $l=>$v){
2598 $this->o_info($this->infoObject,$l,$v);
2601 $this->o_info($this->infoObject,$label,$value);
2606 * set the viewer preferences of the document, it is up to the browser to obey these.
2608 function setPreferences($label,$value=0){
2609 // this will only work if the label is one of the valid ones.
2610 if (is_array($label)){
2611 foreach ($label as $l=>$v){
2612 $this->o_catalog($this->catalogId,'viewerPreferences',array($l=>$v));
2615 $this->o_catalog($this->catalogId,'viewerPreferences',array($label=>$value));
2620 * extract an integer from a position in a byte stream
2624 function PRVT_getBytes(&$data,$pos,$num){
2625 // return the integer represented by $num bytes from $pos within $data
2627 for ($i=0;$i<$num;$i++){
2629 $ret+=ord($data[$pos+$i]);
2635 * add a PNG image into the document, from a file
2636 * this should work with remote files
2638 function addPngFromFile($file,$x,$y,$w=0,$h=0){
2639 // read in a png file, interpret it, then add to the system
2641 $tmp = get_magic_quotes_runtime();
2642 set_magic_quotes_runtime(0);
2643 $fp = @fopen($file,'rb');
2647 $data .= fread($fp,1024);
2652 $errormsg = 'trouble opening file: '.$file;
2654 set_magic_quotes_runtime($tmp);
2657 $header = chr(137).chr(80).chr(78).chr(71).chr(13).chr(10).chr(26).chr(10);
2658 if (substr($data,0,8)!=$header){
2660 $errormsg = 'this file does not have a valid header';
2667 $len = strlen($data);
2668 // cycle through the file, identifying chunks
2674 $chunkLen = $this->PRVT_getBytes($data,$p,4);
2675 $chunkType = substr($data,$p+4,4);
2676 // echo $chunkType.' - '.$chunkLen.'<br>';
2680 // this is where all the file information comes from
2681 $info['width']=$this->PRVT_getBytes($data,$p+8,4);
2682 $info['height']=$this->PRVT_getBytes($data,$p+12,4);
2683 $info['bitDepth']=ord($data[$p+16]);
2684 $info['colorType']=ord($data[$p+17]);
2685 $info['compressionMethod']=ord($data[$p+18]);
2686 $info['filterMethod']=ord($data[$p+19]);
2687 $info['interlaceMethod']=ord($data[$p+20]);
2690 if ($info['compressionMethod']!=0){
2692 $errormsg = 'unsupported compression method';
2694 if ($info['filterMethod']!=0){
2696 $errormsg = 'unsupported filter method';
2700 $pdata.=substr($data,$p+8,$chunkLen);
2703 $idata.=substr($data,$p+8,$chunkLen);
2706 //this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
2707 //print "tRNS found, color type = ".$info['colorType']."<BR>";
2708 $transparency = array();
2709 if ($info['colorType'] == 3) { // indexed color, rbg
2710 /* corresponding to entries in the plte chunk
2711 Alpha for palette index 0: 1 byte
2712 Alpha for palette index 1: 1 byte
2715 // there will be one entry for each palette entry. up until the last non-opaque entry.
2716 // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
2717 $transparency['type']='indexed';
2718 $numPalette = strlen($pdata)/3;
2720 for ($i=$chunkLen;$i>=0;$i--){
2721 if (ord($data[$p+8+$i])==0){
2725 $transparency['data'] = $trans;
2727 } elseif($info['colorType'] == 0) { // grayscale
2728 /* corresponding to entries in the plte chunk
2729 Gray: 2 bytes, range 0 .. (2^bitdepth)-1
2731 // $transparency['grayscale']=$this->PRVT_getBytes($data,$p+8,2); // g = grayscale
2732 $transparency['type']='indexed';
2733 $transparency['data'] = ord($data[$p+8+1]);
2735 } elseif($info['colorType'] == 2) { // truecolor
2736 /* corresponding to entries in the plte chunk
2737 Red: 2 bytes, range 0 .. (2^bitdepth)-1
2738 Green: 2 bytes, range 0 .. (2^bitdepth)-1
2739 Blue: 2 bytes, range 0 .. (2^bitdepth)-1
2741 $transparency['r']=$this->PRVT_getBytes($data,$p+8,2); // r from truecolor
2742 $transparency['g']=$this->PRVT_getBytes($data,$p+10,2); // g from truecolor
2743 $transparency['b']=$this->PRVT_getBytes($data,$p+12,2); // b from truecolor
2746 //unsupported transparency type
2759 $errormsg = 'information header is missing';
2761 if (isset($info['interlaceMethod']) && $info['interlaceMethod']){
2763 $errormsg = 'There appears to be no support for interlaced images in pdf.';
2767 if (!$error && $info['bitDepth'] > 8){
2769 $errormsg = 'only bit depth of 8 or less is supported';
2773 if ($info['colorType']!=2 && $info['colorType']!=0 && $info['colorType']!=3){
2775 $errormsg = 'transparancey alpha channel not supported, transparency only supported for palette images.';
2777 switch ($info['colorType']){
2779 $color = 'DeviceRGB';
2783 $color = 'DeviceRGB';
2787 $color = 'DeviceGray';
2794 $this->addMessage('PNG error - ('.$file.') '.$errormsg);
2798 $w=$h/$info['height']*$info['width'];
2801 $h=$w*$info['height']/$info['width'];
2804 // so this image is ok... add it in.
2806 $im=$this->numImages;
2809 // $this->o_image($this->numObj,'new',array('label'=>$label,'data'=>$idata,'iw'=>$w,'ih'=>$h,'type'=>'png','ic'=>$info['width']));
2810 $options = array('label'=>$label,'data'=>$idata,'bitsPerComponent'=>$info['bitDepth'],'pdata'=>$pdata
2811 ,'iw'=>$info['width'],'ih'=>$info['height'],'type'=>'png','color'=>$color,'ncolor'=>$ncolor);
2812 if (isset($transparency)){
2813 $options['transparency']=$transparency;
2815 $this->o_image($this->numObj,'new',$options);
2817 $this->objects[$this->currentContents]['c'].="\nq";
2818 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$w)." 0 0 ".sprintf('%.3f',$h)." ".sprintf('%.3f',$x)." ".sprintf('%.3f',$y)." cm";
2819 $this->objects[$this->currentContents]['c'].="\n/".$label.' Do';
2820 $this->objects[$this->currentContents]['c'].="\nQ";
2824 * add a JPEG image into the document, from a file
2826 function addJpegFromFile($img,$x,$y,$w=0,$h=0){
2827 // attempt to add a jpeg image straight from a file, using no GD commands
2828 // note that this function is unable to operate on a remote file.
2830 if (!file_exists($img)){
2834 $tmp=getimagesize($img);
2835 $imageWidth=$tmp[0];
2836 $imageHeight=$tmp[1];
2838 if (isset($tmp['channels'])){
2839 $channels = $tmp['channels'];
2844 if ($w<=0 && $h<=0){
2848 $w=$h/$imageHeight*$imageWidth;
2851 $h=$w*$imageHeight/$imageWidth;
2854 $fp=fopen($img,'rb');
2856 $tmp = get_magic_quotes_runtime();
2857 set_magic_quotes_runtime(0);
2858 $data = fread($fp,filesize($img));
2859 set_magic_quotes_runtime($tmp);
2863 $this->addJpegImage_common($data,$x,$y,$w,$h,$imageWidth,$imageHeight,$channels);
2867 * add an image into the document, from a GD object
2868 * this function is not all that reliable, and I would probably encourage people to use
2869 * the file based functions
2871 function addImage(&$img,$x,$y,$w=0,$h=0,$quality=75){
2872 // add a new image into the current location, as an external object
2873 // add the image at $x,$y, and with width and height as defined by $w & $h
2875 // note that this will only work with full colour images and makes them jpg images for display
2876 // later versions could present lossless image formats if there is interest.
2878 // there seems to be some problem here in that images that have quality set above 75 do not appear
2879 // not too sure why this is, but in the meantime I have restricted this to 75.
2884 // if the width or height are set to zero, then set the other one based on keeping the image
2885 // height/width ratio the same, if they are both zero, then give up :)
2886 $imageWidth=imagesx($img);
2887 $imageHeight=imagesy($img);
2889 if ($w<=0 && $h<=0){
2893 $w=$h/$imageHeight*$imageWidth;
2896 $h=$w*$imageHeight/$imageWidth;
2899 // gotta get the data out of the img..
2901 // so I write to a temp file, and then read it back.. soo ugly, my apologies.
2903 $tmpName=tempnam($tmpDir,'img');
2904 imagejpeg($img,$tmpName,$quality);
2905 $fp=fopen($tmpName,'rb');
2907 $tmp = get_magic_quotes_runtime();
2908 set_magic_quotes_runtime(0);
2909 $fp = @fopen($tmpName,'rb');
2913 $data .= fread($fp,1024);
2918 $errormsg = 'trouble opening file';
2920 // $data = fread($fp,filesize($tmpName));
2921 set_magic_quotes_runtime($tmp);
2924 $this->addJpegImage_common($data,$x,$y,$w,$h,$imageWidth,$imageHeight);
2928 * common code used by the two JPEG adding functions
2932 function addJpegImage_common(&$data,$x,$y,$w=0,$h=0,$imageWidth,$imageHeight,$channels=3){
2933 // note that this function is not to be called externally
2934 // it is just the common code between the GD and the file options
2936 $im=$this->numImages;
2939 $this->o_image($this->numObj,'new',array('label'=>$label,'data'=>$data,'iw'=>$imageWidth,'ih'=>$imageHeight,'channels'=>$channels));
2941 $this->objects[$this->currentContents]['c'].="\nq";
2942 $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$w)." 0 0 ".sprintf('%.3f',$h)." ".sprintf('%.3f',$x)." ".sprintf('%.3f',$y)." cm";
2943 $this->objects[$this->currentContents]['c'].="\n/".$label.' Do';
2944 $this->objects[$this->currentContents]['c'].="\nQ";
2948 * specify where the document should open when it first starts
2950 function openHere($style,$a=0,$b=0,$c=0){
2951 // this function will open the document at a specified page, in a specified style
2952 // the values for style, and the required paramters are:
2953 // 'XYZ' left, top, zoom
2957 // 'FitR' left,bottom,right
2962 $this->o_destination($this->numObj,'new',array('page'=>$this->currentPage,'type'=>$style,'p1'=>$a,'p2'=>$b,'p3'=>$c));
2963 $id = $this->catalogId;
2964 $this->o_catalog($id,'openHere',$this->numObj);
2968 * create a labelled destination within the document
2970 function addDestination($label,$style,$a=0,$b=0,$c=0){
2971 // associates the given label with the destination, it is done this way so that a destination can be specified after
2972 // it has been linked to
2973 // styles are the same as the 'openHere' function
2975 $this->o_destination($this->numObj,'new',array('page'=>$this->currentPage,'type'=>$style,'p1'=>$a,'p2'=>$b,'p3'=>$c));
2976 $id = $this->numObj;
2977 // store the label->idf relationship, note that this means that labels can be used only once
2978 $this->destinations["$label"]=$id;
2982 * define font families, this is used to initialize the font families for the default fonts
2983 * and for the user to add new ones for their fonts. The default bahavious can be overridden should
2986 function setFontFamily($family,$options=''){
2987 if (!is_array($options)){
2988 if ($family=='init'){
2989 // set the known family groups
2990 // these font families will be used to enable bold and italic markers to be included
2991 // within text streams. html forms will be used... <b></b> <i></i>
2992 $this->fontFamilies['Helvetica.afm']=array(
2993 'b'=>'Helvetica-Bold.afm'
2994 ,'i'=>'Helvetica-Oblique.afm'
2995 ,'bi'=>'Helvetica-BoldOblique.afm'
2996 ,'ib'=>'Helvetica-BoldOblique.afm'
2998 $this->fontFamilies['Courier.afm']=array(
2999 'b'=>'Courier-Bold.afm'
3000 ,'i'=>'Courier-Oblique.afm'
3001 ,'bi'=>'Courier-BoldOblique.afm'
3002 ,'ib'=>'Courier-BoldOblique.afm'
3004 $this->fontFamilies['Times-Roman.afm']=array(
3005 'b'=>'Times-Bold.afm'
3006 ,'i'=>'Times-Italic.afm'
3007 ,'bi'=>'Times-BoldItalic.afm'
3008 ,'ib'=>'Times-BoldItalic.afm'
3012 // the user is trying to set a font family
3013 // note that this can also be used to set the base ones to something else
3014 if (strlen($family)){
3015 $this->fontFamilies[$family] = $options;
3021 * used to add messages for use in debugging
3023 function addMessage($message){
3024 $this->messages.=$message."\n";
3028 * a few functions which should allow the document to be treated transactionally.
3030 function transaction($action){
3033 // store all the data away into the checkpoint variable
3034 $data = get_object_vars($this);
3035 $this->checkpoint = $data;
3039 if (is_array($this->checkpoint) && isset($this->checkpoint['checkpoint'])){
3040 $tmp = $this->checkpoint['checkpoint'];
3041 $this->checkpoint = $tmp;
3044 $this->checkpoint='';
3048 // do not destroy the current checkpoint, but move us back to the state then, so that we can try again
3049 if (is_array($this->checkpoint)){
3050 // can only abort if were inside a checkpoint
3051 $tmp = $this->checkpoint;
3052 foreach ($tmp as $k=>$v){
3053 if ($k != 'checkpoint'){
3061 if (is_array($this->checkpoint)){
3062 // can only abort if were inside a checkpoint
3063 $tmp = $this->checkpoint;
3064 foreach ($tmp as $k=>$v){