Making Pdf format class in php

<?php
/*
This class is an extension to the fpdf class using a syntax that the original reports were written in
(the R &OS pdf.php class) - due to limitation of this class for foreign character support this wrapper class
was written to allow the same code base to use the more functional fpdf.class by Olivier Plathey

* Wrapper for use R&OSpdf API with fpdf.org class
* Janusz Dobrowolski <janusz@iron.from.pl>
* David Luo <davidluo188@yahoo.com.cn>
extended for Chinese/Japanese/Korean support by Phil Daintree
*/



define('FPDF_FONTPATH','./fonts/');
include ('fpdf.php');

if ($_SESSION['Language']=='zh_CN'){
include('FPDF_Chinese.php');
} elseif ($_SESSION['Language']=='ja_JP'){
include('FPDF_Japanese.php');
}elseif ($_SESSION['Language']=='ko_KR'){
include('FPDF_Korean.php');
} else {
class PDF_Language extends FPDF {
}
}

class Cpdf extends PDF_Language {

function Cpdf($pageSize=array(0,0,612,792)) {

$this->PDF_Language( 'P', 'pt',array($pageSize[2]-$pageSize[0],$pageSize[3]-$pageSize[1]));
$this->setAutoPageBreak(0);
$this->AddPage();
$this->SetLineWidth(1);
$this->cMargin = 0;

// Next three lines should be here for any fonts genarted with 'makefont' utility
if ($_SESSION['Language']=='zh_CN'){
$this->AddBig5Font();
}elseif ($_SESSION['Language']=='ja_JP'){
$this->AddSJISFont();
}elseif ($_SESSION['Language']=='ko_KR'){
$this->AddUHCFont();
} else {
$this->AddFont('helvetica');
$this->AddFont('helvetica','I');
$this->AddFont('helvetica','B');
}
}

function selectFont($FontName) {

$type = '';
if(strpos($FontName, 'Oblique')) {
$type = 'I';
}
if(strpos($FontName, 'Bold')) {
$type = 'B';
}
if ($_SESSION['Language']=='zh_CN'){
$FontName = 'Big5';
} elseif ($_SESSION['Language']=='ja_JP'){
$FontName = 'SJIS';
} elseif ($_SESSION['Language']=='ko_KR'){
$FontName = 'UHC';
} else {
$FontName ='helvetica';
}
$this->SetFont($FontName, $type);
}

function newPage() {
$this->AddPage();
}

function line($x1,$y1,$x2,$y2) {
FPDF::line($x1, $this->h-$y1, $x2, $this->h-$y2);
}

function addText($xb,$yb,$size,$text)//,$angle=0,$wordSpaceAdjust=0)
{
$text = html_entity_decode($text);
$this->SetFontSize($size);
$this->Text($xb, $this->h-$yb, $text);
}

function addInfo($label,$value){
if($label=='Title') {
$this->SetTitle($value);
}
if ($label=='Subject') {
$this->SetSubject($value);
}
if($label=='Creator') {
// The Creator info in source is not exactly it should be ;)
$value = str_replace( "ros.co.nz", "fpdf.org", $value );
$value = str_replace( "R&OS", "", $value );
$this->SetCreator( $value );
}
if($label=='Author') {
$this->SetAuthor($value);
}
}

function addJpegFromFile($img,$x,$y,$w=0,$h=0){
$this->Image($img, $x, $this->h-$y-$h, $w, $h);
}

/*
* Next Two functions are adopted from R&OS pdf class
*/

/**
* 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 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';
$x0=0;
$y0=0;
}

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

$tmp.="\n".sprintf('%.3f',$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);
$tmp.="\n".sprintf('%.3f',($a0+$c0*$dtm)).' '.sprintf('%.3f',($b0+$d0*$dtm));
$tmp.= ' '.sprintf('%.3f',($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']
$tmp.=' f';
} else {
if ($close){
$tmp.=' s'; // small 's' signifies closing the path as well
} else {
$tmp.=' S';
}
}
if ($angle !=0){
$tmp .=' Q';
}
$this->_out($tmp);
}

function Stream() {
$this->Output('','I');
}

function addTextWrap($xb, $yb, $w, $h, $txt, $align='J', $border=0, $fill=0) {
$txt = html_entity_decode($txt);
$this->x = $xb;
$this->y = $this->h - $yb - $h;

switch($align) {
case 'right':
$align = 'R'; break;
case 'center':  
$align = 'C'; break;
default:
$align = 'L';

}
$this->SetFontSize($h);
$cw=&$this->CurrentFont['cw'];
if($w==0) {
$w=$this->w-$this->rMargin-$this->x;
}
$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
$s=str_replace("\r",'',$txt);
$s=str_replace("\n",' ',$s);
$s = trim($s).' ';
$nb=strlen($s);
$b=0;
if ($border) {
if ($border==1) {
$border='LTRB';
$b='LRT';
$b2='LR';
} else {
$b2='';
if(is_int(strpos($border,'L'))) {
$b2.='L';
}
if(is_int(strpos($border,'R'))) {
$b2.='R';
}
$b=is_int(strpos($border,'T')) ? $b2.'T' : $b2;
}
}
$sep=-1;
$i=0;
$l= $ls=0;
$ns=0;
while($i<$nb) {

$c=$s{$i};

if($c==' ' AND $i>0) {
$sep=$i;
$ls=$l;
$ns++;
}
$l+=$cw[$c];
if($l>$wmax)
break;
else
$i++;
}
if($sep==-1) {
if($i==0) $i++;

if($this->ws>0) {
$this->ws=0;
$this->_out('0 Tw');
}
$sep = $i;
} else {
if($align=='J') {
$this->ws=($ns>1) ? ($wmax-$ls)/1000*$this->FontSize/($ns-1) : 0;
$this->_out(sprintf('%.3f Tw',$this->ws*$this->k));
}
}

$this->Cell($w,$h,substr($s,0,$sep),$b,2,$align,$fill);
$this->x=$this->lMargin;

return substr($s,$sep);
}

} // end of class

?>