/gforge/plugins/wiki/www/lib/fpdf.php

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<?php
/*******************************************************************************
* Software: FPDF                                                               *
* Version:  1.52                                                               *
* Date:     2003-12-30                                                         *
* Author:   Olivier PLATHEY                                                    *
* License:  Freeware                                                           *
*                                                                              *
* You may use and modify this software as you wish.                            *
*******************************************************************************/

if (!class_exists('FPDF')) {

define('FPDF_FONTPATH',dirname(__FILE__)."/fpdf/");
define('FPDF_VERSION','1.52');

class FPDF
{
    //Private properties
    var $page;               //current page number
    var $n;                  //current object number
    var $offsets;            //array of object offsets
    var $buffer;             //buffer holding in-memory PDF
    var $pages;              //array containing pages
    var $state;              //current document state
    var $compress;           //compression flag
    var $DefOrientation;     //default orientation
    var $CurOrientation;     //current orientation
    var $OrientationChanges; //array indicating orientation changes
    var $k;                  //scale factor (number of points in user unit)
    var $fwPt,$fhPt;         //dimensions of page format in points
    var $fw,$fh;             //dimensions of page format in user unit
    var $wPt,$hPt;           //current dimensions of page in points
    var $w,$h;               //current dimensions of page in user unit
    var $lMargin;            //left margin
    var $tMargin;            //top margin
    var $rMargin;            //right margin
    var $bMargin;            //page break margin
    var $cMargin;            //cell margin
    var $x,$y;               //current position in user unit for cell positioning
    var $lasth;              //height of last cell printed
    var $LineWidth;          //line width in user unit
    var $CoreFonts;          //array of standard font names
    var $fonts;              //array of used fonts
    var $FontFiles;          //array of font files
    var $diffs;              //array of encoding differences
    var $images;             //array of used images
    var $PageLinks;          //array of links in pages
    var $links;              //array of internal links
    var $FontFamily;         //current font family
    var $FontStyle;          //current font style
    var $underline;          //underlining flag
    var $CurrentFont;        //current font info
    var $FontSizePt;         //current font size in points
    var $FontSize;           //current font size in user unit
    var $DrawColor;          //commands for drawing color
    var $FillColor;          //commands for filling color
    var $TextColor;          //commands for text color
    var $ColorFlag;          //indicates whether fill and text colors are different
    var $ws;                 //word spacing
    var $AutoPageBreak;      //automatic page breaking
    var $PageBreakTrigger;   //threshold used to trigger page breaks
    var $InFooter;           //flag set when processing footer
    var $ZoomMode;           //zoom display mode
    var $LayoutMode;         //layout display mode
    var $title;              //title
    var $subject;            //subject
    var $author;             //author
    var $keywords;           //keywords
    var $creator;            //creator
    var $producer;            //Producer
    var $AliasNbPages;       //alias for total number of pages

/*******************************************************************************
*                                                                              *
*                               Public methods                                 *
*                                                                              *
*******************************************************************************/
    function FPDF ($orientation='P', $unit='mm', $format='A4') {
	//Some checks
	$this->_dochecks();
	//Initialization of properties
	$this->page=0;
	$this->n=2;
	$this->buffer='';
	$this->pages=array();
	$this->OrientationChanges=array();
	$this->state=0;
	$this->fonts=array();
	$this->FontFiles=array();
	$this->diffs=array();
	$this->images=array();
	$this->links=array();
	$this->InFooter=false;
	$this->lasth=0;
	$this->FontFamily='';
	$this->FontStyle='';
	$this->FontSizePt=12;
	$this->underline=false;
	$this->DrawColor='0 G';
	$this->FillColor='0 g';
	$this->TextColor='0 g';
	$this->ColorFlag=false;
	$this->ws=0;
	//Standard fonts
	$this->CoreFonts=array('japanees'=>'Japanees',
                               'courier'=>'Courier','courierB'=>'Courier-Bold','courierI'=>'Courier-Oblique','courierBI'=>'Courier-BoldOblique',
                               'helvetica'=>'Helvetica','helveticaB'=>'Helvetica-Bold','helveticaI'=>'Helvetica-Oblique','helveticaBI'=>'Helvetica-BoldOblique',
                               'times'=>'Times-Roman','timesB'=>'Times-Bold','timesI'=>'Times-Italic','timesBI'=>'Times-BoldItalic',
                               'symbol'=>'Symbol','zapfdingbats'=>'ZapfDingbats');
	//Scale factor
	if ($unit=='pt')
            $this->k=1;
	elseif ($unit=='mm')
            $this->k=72/25.4;
	elseif ($unit=='cm')
            $this->k=72/2.54;
	elseif ($unit=='in')
            $this->k=72;
	else
            $this->Error('Incorrect unit: '.$unit);
	//Page format
	if (is_string($format))
	{
            $format=strtolower($format);
            if ($format=='a3')
                $format=array(841.89,1190.55);
            elseif ($format=='a4')
                $format=array(595.28,841.89);
            elseif ($format=='a5')
                $format=array(420.94,595.28);
            elseif ($format=='letter')
                $format=array(612,792);
            elseif ($format=='legal')
                $format=array(612,1008);
            else
                $this->Error('Unknown page format: '.$format);
            $this->fwPt=$format[0];
            $this->fhPt=$format[1];
	}
	else
	{
            $this->fwPt=$format[0]*$this->k;
            $this->fhPt=$format[1]*$this->k;
	}
	$this->fw=$this->fwPt/$this->k;
	$this->fh=$this->fhPt/$this->k;
	//Page orientation
	$orientation=strtolower($orientation);
	if ($orientation=='p' or $orientation=='portrait')
	{
            $this->DefOrientation='P';
            $this->wPt=$this->fwPt;
            $this->hPt=$this->fhPt;
	}
	elseif ($orientation=='l' or $orientation=='landscape')
	{
            $this->DefOrientation='L';
            $this->wPt=$this->fhPt;
            $this->hPt=$this->fwPt;
	}
	else
            $this->Error('Incorrect orientation: '.$orientation);
	$this->CurOrientation=$this->DefOrientation;
	$this->w=$this->wPt/$this->k;
	$this->h=$this->hPt/$this->k;
	//Page margins (1 cm)
	$margin=28.35/$this->k;
	$this->SetMargins($margin,$margin);
	//Interior cell margin (1 mm)
	$this->cMargin=$margin/10;
	//Line width (0.2 mm)
	$this->LineWidth=.567/$this->k;
	//Automatic page break
	$this->SetAutoPageBreak(true,2*$margin);
	//Full width display mode
	$this->SetDisplayMode('fullwidth');
	//Compression
	$this->SetCompression(true);
    }

    function SetMargins($left,$top,$right=-1) {
	//Set left, top and right margins
	$this->lMargin=$left;
	$this->tMargin=$top;
	if ($right==-1)
            $right=$left;
	$this->rMargin=$right;
    }

    function SetLeftMargin($margin) {
	//Set left margin
	$this->lMargin=$margin;
	if ($this->page>0 and $this->x<$margin)
            $this->x=$margin;
    }

    function SetTopMargin($margin) {
	//Set top margin
	$this->tMargin=$margin;
    }

    function SetRightMargin($margin) {
	//Set right margin
	$this->rMargin=$margin;
    }

    function SetAutoPageBreak($auto,$margin=0) {
	//Set auto page break mode and triggering margin
	$this->AutoPageBreak=$auto;
	$this->bMargin=$margin;
	$this->PageBreakTrigger=$this->h-$margin;
    }

    function SetDisplayMode($zoom,$layout='continuous') {
	//Set display mode in viewer
	if ($zoom=='fullpage' or $zoom=='fullwidth' or $zoom=='real' or $zoom=='default' or !is_string($zoom))
            $this->ZoomMode=$zoom;
	else
            $this->Error('Incorrect zoom display mode: '.$zoom);
	if ($layout=='single' or $layout=='continuous' or $layout=='two' or $layout=='default')
            $this->LayoutMode=$layout;
	else
            $this->Error('Incorrect layout display mode: '.$layout);
    }

    function SetCompression($compress) {
	//Set page compression
	if (function_exists('gzcompress'))
            $this->compress=$compress;
	else
            $this->compress=false;
    }

    function SetTitle($title) {
	//Title of document
	$this->title=$title;
    }

    function SetSubject($subject) {
	//Subject of document
	$this->subject=$subject;
    }

    function SetAuthor($author) {
	//Author of document
	$this->author=$author;
    }

    function SetKeywords($keywords) {
	//Keywords of document
	$this->keywords=$keywords;
    }

    function SetCreator($creator) {
	//Creator of document
	$this->creator=$creator;
    }

    function SetProducer($producer) {
	//Producer of document
	$this->producer=$producer;
    }

    function AliasNbPages($alias='{nb}') {
	//Define an alias for total number of pages
	$this->AliasNbPages=$alias;
    }

    function Error($msg) {
	//Fatal error
	die('<b>FPDF error: </b>'.$msg);
    }

    function Open() {
	//Begin document
	if ($this->state==0)
            $this->_begindoc();
    }

    function Close() {
	//Terminate document
	if ($this->state==3)
            return;
	if ($this->page==0)
            $this->AddPage();
	//Page footer
	$this->InFooter=true;
	$this->Footer();
	$this->InFooter=false;
	//Close page
	$this->_endpage();
	//Close document
	$this->_enddoc();
    }

    function AddPage($orientation='') {
	//Start a new page
	if ($this->state==0)
            $this->Open();
	$family=$this->FontFamily;
	$style=$this->FontStyle.($this->underline ? 'U' : '');
	$size=$this->FontSizePt;
	$lw=$this->LineWidth;
	$dc=$this->DrawColor;
	$fc=$this->FillColor;
	$tc=$this->TextColor;
	$cf=$this->ColorFlag;
	if ($this->page>0) {
            //Page footer
            $this->InFooter=true;
            $this->Footer();
            $this->InFooter=false;
            //Close page
            $this->_endpage();
        }
	//Start new page
	$this->_beginpage($orientation);
	//Set line cap style to square
	$this->_out('2 J');
	//Set line width
	$this->LineWidth=$lw;
	$this->_out(sprintf('%.2f w',$lw*$this->k));
	//Set font
	if ($family)
            $this->SetFont($family,$style,$size);
	//Set colors
	$this->DrawColor=$dc;
	if ($dc!='0 G')
            $this->_out($dc);
	$this->FillColor=$fc;
	if ($fc!='0 g')
            $this->_out($fc);
	$this->TextColor=$tc;
	$this->ColorFlag=$cf;
	//Page header
	$this->Header();
	//Restore line width
	if ($this->LineWidth!=$lw) {
            $this->LineWidth=$lw;
            $this->_out(sprintf('%.2f w',$lw*$this->k));
        }
	//Restore font
	if ($family)
            $this->SetFont($family,$style,$size);
	//Restore colors
	if ($this->DrawColor!=$dc) {
            $this->DrawColor=$dc;
            $this->_out($dc);
        }
	if ($this->FillColor!=$fc) {
            $this->FillColor=$fc;
            $this->_out($fc);
        }
	$this->TextColor=$tc;
	$this->ColorFlag=$cf;
    }

    function Header() {
	//To be implemented in your own inherited class
    }

    function Footer() {
	//To be implemented in your own inherited class
    }

    function PageNo() {
	//Get current page number
	return $this->page;
    }

    function SetDrawColor($r,$g=-1,$b=-1) {
	//Set color for all stroking operations
	if (($r==0 and $g==0 and $b==0) or $g==-1)
            $this->DrawColor=sprintf('%.3f G',$r/255);
	else
            $this->DrawColor=sprintf('%.3f %.3f %.3f RG',$r/255,$g/255,$b/255);
	if ($this->page>0)
            $this->_out($this->DrawColor);
    }

    function SetFillColor($r,$g=-1,$b=-1) {
	//Set color for all filling operations
	if (($r==0 and $g==0 and $b==0) or $g==-1)
            $this->FillColor=sprintf('%.3f g',$r/255);
	else
            $this->FillColor=sprintf('%.3f %.3f %.3f rg',$r/255,$g/255,$b/255);
	$this->ColorFlag=($this->FillColor!=$this->TextColor);
	if ($this->page>0)
            $this->_out($this->FillColor);
    }

    function SetTextColor($r,$g=-1,$b=-1) {
	//Set color for text
	if (($r==0 and $g==0 and $b==0) or $g==-1)
            $this->TextColor=sprintf('%.3f g',$r/255);
	else
            $this->TextColor=sprintf('%.3f %.3f %.3f rg',$r/255,$g/255,$b/255);
	$this->ColorFlag=($this->FillColor!=$this->TextColor);
    }

    function GetStringWidth($s) {
	//Get width of a string in the current font
	$s=(string)$s;
	$cw=&$this->CurrentFont['cw'];
	$w=0;
	$l=strlen($s);
	for($i=0;$i<$l;$i++)
            $w+=$cw[$s{$i}];
	return $w*$this->FontSize/1000;
    }

    function SetLineWidth($width) {
	//Set line width
	$this->LineWidth=$width;
	if ($this->page>0)
            $this->_out(sprintf('%.2f w',$width*$this->k));
    }

    function Line($x1,$y1,$x2,$y2) {
	//Draw a line
	$this->_out(sprintf('%.2f %.2f m %.2f %.2f l S',$x1*$this->k,($this->h-$y1)*$this->k,$x2*$this->k,($this->h-$y2)*$this->k));
    }

    function Rect($x,$y,$w,$h,$style='') {
	//Draw a rectangle
	if ($style=='F')
            $op='f';
	elseif ($style=='FD' or $style=='DF')
            $op='B';
	else
            $op='S';
	$this->_out(sprintf('%.2f %.2f %.2f %.2f re %s',$x*$this->k,($this->h-$y)*$this->k,$w*$this->k,-$h*$this->k,$op));
    }

    function AddFont($family,$style='',$file='') {
	//Add a TrueType or Type1 font
	$family=strtolower($family);
	if ($family=='arial')
            $family='helvetica';
	$style=strtoupper($style);
	if ($style=='IB')
            $style='BI';
	if (isset($this->fonts[$family.$style]))
            $this->Error('Font already added: '.$family.' '.$style);
	if ($file=='')
            $file=str_replace(' ','',$family).strtolower($style).'.php';
	if (defined('FPDF_FONTPATH'))
            $file = FPDF_FONTPATH . $file;
	include($file);
	if (!isset($name))
            $this->Error('Could not include font definition file');
	$i=count($this->fonts)+1;
	$this->fonts[$family.$style]=array('i'=>$i,'type'=>$type,'name'=>$name,'desc'=>$desc,'up'=>$up,'ut'=>$ut,'cw'=>$cw,'enc'=>$enc,'file'=>$file);
	if ($diff) {
            //Search existing encodings
            $d=0;
            $nb=count($this->diffs);
            for ($i=1;$i<=$nb;$i++)
                if ($this->diffs[$i]==$diff) {
                    $d=$i;
                    break;
                }
            if ($d==0) {
                $d=$nb+1;
                $this->diffs[$d]=$diff;
            }
            $this->fonts[$family.$style]['diff']=$d;
        }
	if ($file) {
            if ($type=='TrueType')
                $this->FontFiles[$file]=array('length1'=>$originalsize);
            else
                $this->FontFiles[$file]=array('length1'=>$size1,'length2'=>$size2);
        }
    }

    function SetFont($family,$style='',$size=0) {
	//Select a font; size given in points
	global $fpdf_charwidths;

	$family=strtolower($family);
	if ($family=='')
            $family=$this->FontFamily;
	if ($family=='arial')
            $family='helvetica';
	elseif ($family=='symbol' or $family=='zapfdingbats')
            $style='';
	$style=strtoupper($style);
	if (is_int(strpos($style,'U'))) {
            $this->underline=true;
            $style=str_replace('U','',$style);
        }
	else
            $this->underline=false;
	if ($style=='IB')
            $style='BI';
	if ($size==0)
            $size=$this->FontSizePt;
	//Test if font is already selected
	if ($this->FontFamily==$family and $this->FontStyle==$style and $this->FontSizePt==$size)
            return;
	//Test if used for the first time
	$fontkey=$family.$style;
	if (!isset($this->fonts[$fontkey])) {
            //Check if one of the standard fonts
            if (isset($this->CoreFonts[$fontkey])) {
                if (!isset($fpdf_charwidths[$fontkey])) {
                    //Load metric file
                    $file=$family;
                    if ($family=='times' or $family=='helvetica')
                        $file.=strtolower($style);
                    $file.='.php';
                    if (defined('FPDF_FONTPATH'))
                        $file=FPDF_FONTPATH.$file;
                    include($file);
                    if (!isset($fpdf_charwidths[$fontkey]))
                        $this->Error('Could not include font metric file');
                }
                $i=count($this->fonts)+1;
                $this->fonts[$fontkey]=array('i'=>$i,'type'=>'core','name'=>$this->CoreFonts[$fontkey],'up'=>-100,'ut'=>50,'cw'=>$fpdf_charwidths[$fontkey]);
            }
            else
                $this->Error('Undefined font: '.$family.' '.$style);
        }
	//Select it
	$this->FontFamily=$family;
	$this->FontStyle=$style;
	$this->FontSizePt=$size;
	$this->FontSize=$size/$this->k;
	$this->CurrentFont=&$this->fonts[$fontkey];
	if ($this->page>0)
            $this->_out(sprintf('BT /F%d %.2f Tf ET',$this->CurrentFont['i'],$this->FontSizePt));
    }

    function SetFontSize($size) {
	//Set font size in points
	if ($this->FontSizePt==$size)
            return;
	$this->FontSizePt=$size;
	$this->FontSize=$size/$this->k;
	if ($this->page>0)
            $this->_out(sprintf('BT /F%d %.2f Tf ET',$this->CurrentFont['i'],$this->FontSizePt));
    }

    function AddLink() {
	//Create a new internal link
	$n=count($this->links)+1;
	$this->links[$n]=array(0,0);
	return $n;
    }

    function SetLink($link,$y=0,$page=-1) {
	//Set destination of internal link
	if ($y==-1)
            $y=$this->y;
	if ($page==-1)
            $page=$this->page;
	$this->links[$link]=array($page,$y);
    }

    function Link($x,$y,$w,$h,$link) {
	//Put a link on the page
	$this->PageLinks[$this->page][]=array($x*$this->k,$this->hPt-$y*$this->k,$w*$this->k,$h*$this->k,$link);
    }

    function Text($x,$y,$txt) {
	//Output a string
	$s=sprintf('BT %.2f %.2f Td (%s) Tj ET',$x*$this->k,($this->h-$y)*$this->k,$this->_escape($txt));
	if ($this->underline and $txt!='')
            $s.=' '.$this->_dounderline($x,$y,$txt);
	if ($this->ColorFlag)
            $s='q '.$this->TextColor.' '.$s.' Q';
	$this->_out($s);
    }

    function AcceptPageBreak() {
	//Accept automatic page break or not
	return $this->AutoPageBreak;
    }

    function Cell($w,$h=0,$txt='',$border=0,$ln=0,$align='',$fill=0,$link='') {
	//Output a cell
	$k=$this->k;
	if ($this->y+$h>$this->PageBreakTrigger and !$this->InFooter and $this->AcceptPageBreak()) {
            //Automatic page break
            $x=$this->x;
            $ws=$this->ws;
            if ($ws>0) {
                $this->ws=0;
                $this->_out('0 Tw');
            }
            $this->AddPage($this->CurOrientation);
            $this->x=$x;
            if ($ws>0) {
                $this->ws=$ws;
                $this->_out(sprintf('%.3f Tw',$ws*$k));
            }
        }
	if ($w==0)
            $w=$this->w-$this->rMargin-$this->x;
	$s='';
	if ($fill==1 or $border==1) {
            if ($fill==1)
                $op=($border==1) ? 'B' : 'f';
            else
                $op='S';
            $s=sprintf('%.2f %.2f %.2f %.2f re %s ',$this->x*$k,($this->h-$this->y)*$k,$w*$k,-$h*$k,$op);
        }
	if (is_string($border)) {
            $x=$this->x;
            $y=$this->y;
            if (is_int(strpos($border,'L')))
                $s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-$y)*$k,$x*$k,($this->h-($y+$h))*$k);
            if (is_int(strpos($border,'T')))
                $s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-$y)*$k);
            if (is_int(strpos($border,'R')))
                $s.=sprintf('%.2f %.2f m %.2f %.2f l S ',($x+$w)*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
            if (is_int(strpos($border,'B')))
                $s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-($y+$h))*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
        }
	if ($txt!='') {
            if ($align=='R')
                $dx=$w-$this->cMargin-$this->GetStringWidth($txt);
            elseif ($align=='C')
                $dx=($w-$this->GetStringWidth($txt))/2;
            else
                $dx=$this->cMargin;
            if ($this->ColorFlag)
                $s.='q '.$this->TextColor.' ';
            $txt2=str_replace(')','\\)',str_replace('(','\\(',str_replace('\\','\\\\',$txt)));
            $s.=sprintf('BT %.2f %.2f Td (%s) Tj ET',($this->x+$dx)*$k,($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k,$txt2);
            if ($this->underline)
                $s.=' '.$this->_dounderline($this->x+$dx,$this->y+.5*$h+.3*$this->FontSize,$txt);
            if ($this->ColorFlag)
                $s.=' Q';
            if ($link)
                $this->Link($this->x+$dx,$this->y+.5*$h-.5*$this->FontSize,$this->GetStringWidth($txt),$this->FontSize,$link);
        }
	if ($s)
            $this->_out($s);
	$this->lasth=$h;
	if ($ln>0) {
            //Go to next line
            $this->y+=$h;
            if ($ln==1)
                $this->x=$this->lMargin;
        }
	else
            $this->x+=$w;
    }

    function MultiCell($w,$h,$txt,$border=0,$align='J',$fill=0) {
	//Output text with automatic or explicit line breaks
	$cw=&$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);
	$nb=strlen($s);
	if ($nb>0 and $s[$nb-1]=="\n")
            $nb--;
	$b=0;
	if ($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;
	$j=0;
	$l=0;
	$ns=0;
	$nl=1;
	while ($i<$nb) {
            //Get next character
            $c=$s{$i};
            if ($c=="\n") {
                //Explicit line break
                if ($this->ws>0) {
                    $this->ws=0;
                    $this->_out('0 Tw');
                }
                $this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
                $i++;
                $sep=-1;
                $j=$i;
                $l=0;
                $ns=0;
                $nl++;
                if ($border and $nl==2)
                    $b=$b2;
                continue;
            }
            if ($c==' ') {
                $sep=$i;
                $ls=$l;
                $ns++;
            }
            $l+=$cw[$c];
            if ($l>$wmax) {
                //Automatic line break
                if ($sep==-1) {
                    if ($i==$j)
                        $i++;
                    if ($this->ws>0) {
                        $this->ws=0;
                        $this->_out('0 Tw');
                    }
                    $this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
                }
                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,$j,$sep-$j),$b,2,$align,$fill);
                        $i=$sep+1;
                    }
                $sep=-1;
                $j=$i;
                $l=0;
                $ns=0;
                $nl++;
                if ($border and $nl==2)
                    $b=$b2;
            }
            else
                $i++;
        }
	//Last chunk
	if ($this->ws>0) {
            $this->ws=0;
            $this->_out('0 Tw');
        }
	if ($border and is_int(strpos($border,'B')))
            $b.='B';
	$this->Cell($w,$h,substr($s,$j,$i-$j),$b,2,$align,$fill);
	$this->x=$this->lMargin;
    }

    function Write($h,$txt,$link='') {
	//Output text in flowing mode
	$cw=&$this->CurrentFont['cw'];
	$w=$this->w - $this->rMargin - $this->x;
	$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
	$s=str_replace("\r",'',$txt);
	$nb=strlen($s);
	$sep=-1;
	$i=0;
	$j=0;
	$l=0;
	$nl=1;
	while($i<$nb) {
            //Get next character
            $c=$s{$i};
            if ($c=="\n") {
                //Explicit line break
                $this->Cell($w,$h,substr($s,$j,$i-$j),0,2,'',0,$link);
                $i++;
                $sep=-1;
                $j=$i;
                $l=0;
                if ($nl==1) {
                    $this->x=$this->lMargin;
                    $w=$this->w-$this->rMargin-$this->x;
                    $wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
                }
                $nl++;
                continue;
            }
            if ($c==' ')
                $sep=$i;
            $l+=$cw[$c];
            if ($l>$wmax) {
                //Automatic line break
                if ($sep==-1) {
                    if ($this->x>$this->lMargin) {
                        //Move to next line
                        $this->x=$this->lMargin;
                        $this->y+=$h;
                        $w=$this->w-$this->rMargin-$this->x;
                        $wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
                        $i++;
                        $nl++;
                        continue;
                    }
                    if ($i==$j)
                        $i++;
                    $this->Cell($w,$h,substr($s,$j,$i-$j),0,2,'',0,$link);
                }
                else {
                    $this->Cell($w,$h,substr($s,$j,$sep-$j),0,2,'',0,$link);
                    $i=$sep+1;
                }
                $sep=-1;
                $j=$i;
                $l=0;
                if ($nl==1) {
                    $this->x=$this->lMargin;
                    $w=$this->w-$this->rMargin-$this->x;
                    $wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
                }
                $nl++;
            }
            else
                $i++;
        }
	//Last chunk
	if ($i!=$j)
            $this->Cell($l/1000*$this->FontSize,$h,substr($s,$j),0,0,'',0,$link);
    }

    function Image($file,$x,$y,$w=0,$h=0,$type='',$link='') {
	//Put an image on the page
	if (!isset($this->images[$file])) {
            //First use of image, get info
            if ($type=='') {
                $pos=strrpos($file,'.');
                if (!$pos)
                    $this->Error('Image file has no extension and no type was specified: '.$file);
                $type=substr($file,$pos+1);
            }
            $type=strtolower($type);
            $mqr=get_magic_quotes_runtime();
            set_magic_quotes_runtime(0);
            if ($type=='jpg' or $type=='jpeg')
                $info=$this->_parsejpg($file);
            elseif ($type=='png')
                $info=$this->_parsepng($file);
            elseif ($type=='gif')
                $info=$this->_parsegif ($file);
            else
                {
                    //Allow for additional formats
                    $mtd='_parse'.$type;
                    if (!method_exists($this,$mtd))
                        $this->Error('Unsupported image type: '.$type);
                    $info=$this->$mtd($file);
                }
            set_magic_quotes_runtime($mqr);
            $info['i']=count($this->images)+1;
            $this->images[$file]=$info;
        }
	else
            $info=$this->images[$file];
	//Automatic width and height calculation if needed
	if ($w==0 and $h==0) {
            //Put image at 72 dpi
            $w=$info['w']/$this->k;
            $h=$info['h']/$this->k;
        }
	if ($w==0)
            $w=$h*$info['w']/$info['h'];
	if ($h==0)
            $h=$w*$info['h']/$info['w'];
	$this->_out(sprintf('q %.2f 0 0 %.2f %.2f %.2f cm /I%d Do Q',$w*$this->k,$h*$this->k,$x*$this->k,($this->h-($y+$h))*$this->k,$info['i']));
	if ($link)
            $this->Link($x,$y,$w,$h,$link);
    }

    function Ln($h='') {
	//Line feed; default value is last cell height
	$this->x=$this->lMargin;
	if (is_string($h))
            $this->y+=$this->lasth;
	else
            $this->y+=$h;
    }

    function GetX() {
	//Get x position
	return $this->x;
    }

    function SetX($x) {
	//Set x position
	if ($x>=0)
            $this->x=$x;
	else
            $this->x=$this->w+$x;
    }

    function GetY() {
	//Get y position
	return $this->y;
    }

    function SetY($y) {
	//Set y position and reset x
	$this->x=$this->lMargin;
	if ($y>=0)
            $this->y=$y;
	else
            $this->y=$this->h+$y;
    }

    function SetXY($x,$y) {
	//Set x and y positions
	$this->SetY($y);
	$this->SetX($x);
    }

    function Output($name='',$dest='') {
	//Output PDF to some destination
	global $HTTP_SERVER_VARS;

	//Finish document if necessary
	if ($this->state<3)
            $this->Close();
	//Normalize parameters
	if (is_bool($dest))
            $dest = $dest ? 'D' : 'F';
	$dest = strtoupper($dest);
	if ($dest=='') {
            if ($name=='') {
                $name='doc.pdf';
                $dest='I';
            }
            else
                $dest='F';
        }
	switch($dest) {
        case 'I':
            //Send to standard output
            if (isset($HTTP_SERVER_VARS['SERVER_NAME'])) {
                //We send to a browser
                Header('Content-Type: application/pdf');
                if (headers_sent())
                    $this->Error('Some data has already been output to browser, can\'t send PDF file');
                Header('Content-Length: '.strlen($this->buffer));
                Header('Content-disposition: inline; filename='.$name);
            }
            echo $this->buffer;
            break;
        case 'D':
            //Download file
            if (isset($HTTP_SERVER_VARS['HTTP_USER_AGENT']) and strpos($HTTP_SERVER_VARS['HTTP_USER_AGENT'],'MSIE'))
                Header('Content-Type: application/force-download');
            else
                Header('Content-Type: application/octet-stream');
            if (headers_sent())
                $this->Error('Some data has already been output to browser, can\'t send PDF file');
            Header('Content-Length: '.strlen($this->buffer));
            Header('Content-disposition: attachment; filename='.$name);
            echo $this->buffer;
            break;
        case 'F':
            //Save to local file
            $f=fopen($name,'wb');
            if (!$f)
                $this->Error('Unable to create output file: '.$name);
            fwrite($f,$this->buffer,strlen($this->buffer));
            fclose($f);
            break;
        case 'S':
            //Return as a string
            return $this->buffer;
        default:
            $this->Error('Incorrect output destination: '.$dest);
        }
	return '';
    }

    /*******************************************************************************
     *                                                                              *
     *                              Protected methods                               *
     *                                                                              *
     *******************************************************************************/
    function _dochecks() {
	//Check for locale-related bug. we must have "." as comma seperator
	$attempts = array("C","en","en_us","English");
	$i = 0;
	while (1.1 == 1 and $i++ < count($attempts)) {
            setlocale(LC_NUMERIC,$attempts[$i]);
	}
	if (1.1 == 1) {
            $this->Error('1.1 == 1: Wrong locale with comma as dot. German? Don\'t alter the locale before including class file');
	}
	//Check for decimal separator
	if (sprintf('%.1f',1.0)!='1.0')
            setlocale(LC_NUMERIC,'C');
    }

    function _begindoc() {
	//Start document
	$this->state=1;
	$this->_out('%PDF-1.3');
    }

    function _putpages() {
	$nb=$this->page;
	if (!empty($this->AliasNbPages)) {
            //Replace number of pages
            for($n=1;$n<=$nb;$n++)
                $this->pages[$n]=str_replace($this->AliasNbPages,$nb,$this->pages[$n]);
        }
	if ($this->DefOrientation=='P') {
            $wPt=$this->fwPt;
            $hPt=$this->fhPt;
        }
	else
            {
		$wPt=$this->fhPt;
		$hPt=$this->fwPt;
            }
	$filter=($this->compress) ? '/Filter /FlateDecode ' : '';
	for($n=1;$n<=$nb;$n++) {
            //Page
            $this->_newobj();
            $this->_out('<</Type /Page');
            $this->_out('/Parent 1 0 R');
            if (isset($this->OrientationChanges[$n]))
                $this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]',$hPt,$wPt));
            $this->_out('/Resources 2 0 R');
            if (isset($this->PageLinks[$n])) {
                //Links
                $annots='/Annots [';
                foreach($this->PageLinks[$n] as $pl) {
                    $rect=sprintf('%.2f %.2f %.2f %.2f',$pl[0],$pl[1],$pl[0]+$pl[2],$pl[1]-$pl[3]);
                    $annots.='<</Type /Annot /Subtype /Link /Rect ['.$rect.'] /Border [0 0 0] ';
                    if (is_string($pl[4]))
                        $annots.='/A <</S /URI /URI '.$this->_textstring($pl[4]).'>>>>';
                    else
                        {
                            $l=$this->links[$pl[4]];
                            $h=isset($this->OrientationChanges[$l[0]]) ? $wPt : $hPt;
                            $annots.=sprintf('/Dest [%d 0 R /XYZ 0 %.2f null]>>',1+2*$l[0],$h-$l[1]*$this->k);
                        }
                }
                $this->_out($annots.']');
            }
            $this->_out('/Contents '.($this->n+1).' 0 R>>');
            $this->_out('endobj');
            //Page content
            $p=($this->compress) ? gzcompress($this->pages[$n]) : $this->pages[$n];
            $this->_newobj();
            $this->_out('<<'.$filter.'/Length '.strlen($p).'>>');
            $this->_putstream($p);
            $this->_out('endobj');
        }
	//Pages root
	$this->offsets[1]=strlen($this->buffer);
	$this->_out('1 0 obj');
	$this->_out('<</Type /Pages');
	$kids='/Kids [';
	for($i=0;$i<$nb;$i++)
            $kids.=(3+2*$i).' 0 R ';
	$this->_out($kids.']');
	$this->_out('/Count '.$nb);
	$this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]',$wPt,$hPt));
	$this->_out('>>');
	$this->_out('endobj');
    }

    function _putfonts() {
	$nf=$this->n;
	foreach($this->diffs as $diff) {
            //Encodings
            $this->_newobj();
            $this->_out('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences ['.$diff.']>>');
            $this->_out('endobj');
        }
	$mqr=get_magic_quotes_runtime();
	set_magic_quotes_runtime(0);
	foreach($this->FontFiles as $file=>$info) {
            //Font file embedding
            $this->_newobj();
            $this->FontFiles[$file]['n']=$this->n;
            if (defined('FPDF_FONTPATH'))
                $file=FPDF_FONTPATH.$file;
            $size=filesize($file);
            if (!$size)
                $this->Error('Font file not found');
            $this->_out('<</Length '.$size);
            if (substr($file,-2)=='.z')
                $this->_out('/Filter /FlateDecode');
            $this->_out('/Length1 '.$info['length1']);
            if (isset($info['length2']))
                $this->_out('/Length2 '.$info['length2'].' /Length3 0');
            $this->_out('>>');
            $f=fopen($file,'rb');
            $this->_putstream(fread($f,$size));
            fclose($f);
            $this->_out('endobj');
        }
	set_magic_quotes_runtime($mqr);
	foreach($this->fonts as $k=>$font) {
            //Font objects
            $this->fonts[$k]['n']=$this->n+1;
            $type=$font['type'];
            $name=$font['name'];
            if ($type=='core') {
                //Standard font
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/BaseFont /'.$name);
                $this->_out('/Subtype /Type1');
                if ($name!='Symbol' and $name!='ZapfDingbats')
                    $this->_out('/Encoding /WinAnsiEncoding');
                $this->_out('>>');
                $this->_out('endobj');
            }
            elseif ($type=='Type1' or $type=='TrueType') {
                //Additional Type1 or TrueType font
                $this->_newobj();
                $this->_out('<</Type /Font');
                $this->_out('/BaseFont /'.$name);
                $this->_out('/Subtype /'.$type);
                $this->_out('/FirstChar 32 /LastChar 255');
                $this->_out('/Widths '.($this->n+1).' 0 R');
                $this->_out('/FontDescriptor '.($this->n+2).' 0 R');
                if ($font['enc']) {
                    if (isset($font['diff']))
                        $this->_out('/Encoding '.($nf+$font['diff']).' 0 R');
                    else
                        $this->_out('/Encoding /WinAnsiEncoding');
                }
                $this->_out('>>');
                $this->_out('endobj');
                //Widths
                $this->_newobj();
                $cw=&$font['cw'];
                $s='[';
                for($i=32;$i<=255;$i++)
                    $s.=$cw[chr($i)].' ';
                $this->_out($s.']');
                $this->_out('endobj');
                //Descriptor
                $this->_newobj();
                $s='<</Type /FontDescriptor /FontName /'.$name;
                foreach($font['desc'] as $k=>$v)
                    $s.=' /'.$k.' '.$v;
                $file=$font['file'];
                if ($file)
                    $s.=' /FontFile'.($type=='Type1' ? '' : '2').' '.$this->FontFiles[$file]['n'].' 0 R';
                $this->_out($s.'>>');
                $this->_out('endobj');
            }
            else
                {
                    //Allow for additional types
                    $mtd='_put'.strtolower($type);
                    if (!method_exists($this,$mtd))
                        $this->Error('Unsupported font type: '.$type);
                    $this->$mtd($font);
                }
        }
    }

    function _putimages() {
	$filter=($this->compress) ? '/Filter /FlateDecode ' : '';
	reset($this->images);
	while(list($file,$info)=each($this->images)) {
            $this->_newobj();
            $this->images[$file]['n']=$this->n;
            $this->_out('<</Type /XObject');
            $this->_out('/Subtype /Image');
            $this->_out('/Width '.$info['w']);
            $this->_out('/Height '.$info['h']);
            if ($info['cs']=='Indexed')
                $this->_out('/ColorSpace [/Indexed /DeviceRGB '.(strlen($info['pal'])/3-1).' '.($this->n+1).' 0 R]');
            else
                {
                    $this->_out('/ColorSpace /'.$info['cs']);
                    if ($info['cs']=='DeviceCMYK')
                        $this->_out('/Decode [1 0 1 0 1 0 1 0]');
                }
            $this->_out('/BitsPerComponent '.$info['bpc']);
            $this->_out('/Filter /'.$info['f']);
            if (isset($info['parms']))
                $this->_out($info['parms']);
            if (isset($info['trns']) and is_array($info['trns'])) {
                $trns='';
                for($i=0;$i<count($info['trns']);$i++)
                    $trns.=$info['trns'][$i].' '.$info['trns'][$i].' ';
                $this->_out('/Mask ['.$trns.']');
            }
            $this->_out('/Length '.strlen($info['data']).'>>');
            $this->_putstream($info['data']);
            unset($this->images[$file]['data']);
            $this->_out('endobj');
            //Palette
            if ($info['cs']=='Indexed') {
                $this->_newobj();
                $pal=($this->compress) ? gzcompress($info['pal']) : $info['pal'];
                $this->_out('<<'.$filter.'/Length '.strlen($pal).'>>');
                $this->_putstream($pal);
                $this->_out('endobj');
            }
        }
    }

    function _putresources() {
	$this->_putfonts();
	$this->_putimages();
	//Resource dictionary
	$this->offsets[2]=strlen($this->buffer);
	$this->_out('2 0 obj');
	$this->_out('<</ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
	$this->_out('/Font <<');
	foreach($this->fonts as $font)
            $this->_out('/F'.$font['i'].' '.$font['n'].' 0 R');
	$this->_out('>>');
	if (count($this->images)) {
            $this->_out('/XObject <<');
            foreach($this->images as $image)
                $this->_out('/I'.$image['i'].' '.$image['n'].' 0 R');
            $this->_out('>>');
        }
	$this->_out('>>');
	$this->_out('endobj');
    }

    function _putinfo() {
	if (!empty($this->producer))
            $this->_out('/Producer '.$this->_textstring($this->producer));
	if (!empty($this->title))
            $this->_out('/Title '.$this->_textstring($this->title));
	if (!empty($this->subject))
            $this->_out('/Subject '.$this->_textstring($this->subject));
	if (!empty($this->author))
            $this->_out('/Author '.$this->_textstring($this->author));
	if (!empty($this->keywords))
            $this->_out('/Keywords '.$this->_textstring($this->keywords));
	if (!empty($this->creator))
            $this->_out('/Creator '.$this->_textstring($this->creator));
	$this->_out('/CreationDate '.$this->_textstring('D:'.date('YmdHis')));
    }

    function _putcatalog() {
	$this->_out('/Type /Catalog');
	$this->_out('/Pages 1 0 R');
	if ($this->ZoomMode=='fullpage')
            $this->_out('/OpenAction [3 0 R /Fit]');
	elseif ($this->ZoomMode=='fullwidth')
            $this->_out('/OpenAction [3 0 R /FitH null]');
	elseif ($this->ZoomMode=='real')
            $this->_out('/OpenAction [3 0 R /XYZ null null 1]');
	elseif (!is_string($this->ZoomMode))
            $this->_out('/OpenAction [3 0 R /XYZ null null '.($this->ZoomMode/100).']');
	if ($this->LayoutMode=='single')
            $this->_out('/PageLayout /SinglePage');
	elseif ($this->LayoutMode=='continuous')
            $this->_out('/PageLayout /OneColumn');
	elseif ($this->LayoutMode=='two')
            $this->_out('/PageLayout /TwoColumnLeft');
    }

    function _puttrailer() {
	$this->_out('/Size '.($this->n+1));
	$this->_out('/Root '.$this->n.' 0 R');
	$this->_out('/Info '.($this->n-1).' 0 R');
    }

    function _enddoc() {
	$this->_putpages();
	$this->_putresources();
	//Info
	$this->_newobj();
	$this->_out('<<');
	$this->_putinfo();
	$this->_out('>>');
	$this->_out('endobj');
	//Catalog
	$this->_newobj();
	$this->_out('<<');
	$this->_putcatalog();
	$this->_out('>>');
	$this->_out('endobj');
	//Cross-ref
	$o=strlen($this->buffer);
	$this->_out('xref');
	$this->_out('0 '.($this->n+1));
	$this->_out('0000000000 65535 f ');
	for($i=1;$i<=$this->n;$i++)
            $this->_out(sprintf('%010d 00000 n ',$this->offsets[$i]));
	//Trailer
	$this->_out('trailer');
	$this->_out('<<');
	$this->_puttrailer();
	$this->_out('>>');
	$this->_out('startxref');
	$this->_out($o);
	$this->_out('%%EOF');
	$this->state=3;
    }

    function _beginpage($orientation) {
	$this->page++;
	$this->pages[$this->page]='';
	$this->state=2;
	$this->x=$this->lMargin;
	$this->y=$this->tMargin;
	$this->FontFamily='';
	//Page orientation
	if (!$orientation)
            $orientation=$this->DefOrientation;
	else
            {
		$orientation=strtoupper($orientation{0});
		if ($orientation!=$this->DefOrientation)
                    $this->OrientationChanges[$this->page]=true;
            }
	if ($orientation!=$this->CurOrientation) {
            //Change orientation
            if ($orientation=='P') {
                $this->wPt=$this->fwPt;
                $this->hPt=$this->fhPt;
                $this->w=$this->fw;
                $this->h=$this->fh;
            }
            else
                {
                    $this->wPt=$this->fhPt;
                    $this->hPt=$this->fwPt;
                    $this->w=$this->fh;
                    $this->h=$this->fw;
                }
            $this->PageBreakTrigger=$this->h-$this->bMargin;
            $this->CurOrientation=$orientation;
        }
    }

    function _endpage() {
	//End of page contents
	$this->state=1;
    }

    function _newobj() {
	//Begin a new object
	$this->n++;
	$this->offsets[$this->n]=strlen($this->buffer);
	$this->_out($this->n.' 0 obj');
    }

    function _dounderline($x,$y,$txt) {
	//Underline text
	$up=$this->CurrentFont['up'];
	$ut=$this->CurrentFont['ut'];
	$w=$this->GetStringWidth($txt)+$this->ws*substr_count($txt,' ');
	return sprintf('%.2f %.2f %.2f %.2f re f',$x*$this->k,($this->h-($y-$up/1000*$this->FontSize))*$this->k,$w*$this->k,-$ut/1000*$this->FontSizePt);
    }

    function _parsegif ($file) 
    { 
        //Function by Jérôme Fenal
        //GIF class in pure PHP from Yamasoft (http://www.yamasoft.com/php-gif.zip)
        require_once 'lib/gif.php'; 

        $h=0;
        $w=0;
        $gif = new CGIF ();

        if (!$gif->loadFile($file, 0))
            $this->Error("GIF parser: unable to open file $file");
  
        if ($gif->m_img->m_gih->m_bLocalClr) {
            $nColors = $gif->m_img->m_gih->m_nTableSize;
            $pal = $gif->m_img->m_gih->m_colorTable->toString();
            if ($bgColor != -1) {
                $bgColor = $this->m_img->m_gih->m_colorTable->colorIndex($bgColor);
            }
            $colspace='Indexed';
	} elseif ($gif->m_gfh->m_bGlobalClr) {
            $nColors = $gif->m_gfh->m_nTableSize;
            $pal = $gif->m_gfh->m_colorTable->toString();
            if ($bgColor != -1) {
                $bgColor = $gif->m_gfh->m_colorTable->colorIndex($bgColor);
            }
            $colspace='Indexed';
	} else {
            $nColors = 0;
            $bgColor = -1;
            $colspace='DeviceGray';
            $pal='';
	}

	$trns='';
	if ($gif->m_img->m_bTrans && ($nColors > 0)) {
            $trns=array($gif->m_img->m_nTrans);
	}

	$data=$gif->m_img->m_data;
	$w=$gif->m_gfh->m_nWidth;
	$h=$gif->m_gfh->m_nHeight;

	if ($colspace=='Indexed' and empty($pal))
            $this->Error('Missing palette in '.$file);

	if ($this->compress) {
            $data = gzcompress($data);
            return array( 'w'=>$w, 'h'=>$h, 'cs'=>$colspace, 'bpc'=>8, 'f'=>'FlateDecode', 'pal'=>$pal, 'trns'=>$trns, 'data'=>$data);
	} else {
            return array( 'w'=>$w, 'h'=>$h, 'cs'=>$colspace, 'bpc'=>8, 'pal'=>$pal, 'trns'=>$trns, 'data'=>$data);
	} 
    }

    function _parsejpg($file) {
	//Extract info from a JPEG file
	$a = GetImageSize($file);
	if (!$a)
            $this->Error('Missing or incorrect image file: '.$file);
	if ($a[2]!=2)
            $this->Error('Not a JPEG file: '.$file);
	if (!isset($a['channels']) or $a['channels']==3)
            $colspace='DeviceRGB';
	elseif ($a['channels']==4)
            $colspace='DeviceCMYK';
	else
            $colspace='DeviceGray';
	$bpc=isset($a['bits']) ? $a['bits'] : 8;
	//Read whole file
	$f=fopen($file,'rb');
	$data='';
	while(!feof($f))
            $data.=fread($f,4096);
	fclose($f);
	return array('w'=>$a[0],'h'=>$a[1],'cs'=>$colspace,'bpc'=>$bpc,'f'=>'DCTDecode','data'=>$data);
    }

    function _parsepng($file) {
	//Extract info from a PNG file
	$f=fopen($file,'rb');
	if (!$f)
            $this->Error('Can\'t open image file: '.$file);
	//Check signature
	if (fread($f,8)!=chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10))
            $this->Error('Not a PNG file: '.$file);
	//Read header chunk
	fread($f,4);
	if (fread($f,4)!='IHDR')
            $this->Error('Incorrect PNG file: '.$file);
	$w=$this->_freadint($f);
	$h=$this->_freadint($f);
	$bpc=ord(fread($f,1));
	if ($bpc>8)
            $this->Error('16-bit depth not supported: '.$file);
	$ct=ord(fread($f,1));
	if ($ct==0)
            $colspace='DeviceGray';
	elseif ($ct==2)
            $colspace='DeviceRGB';
	elseif ($ct==3)
            $colspace='Indexed';
	else
            $this->Error('Alpha channel not supported: '.$file);
	if (ord(fread($f,1))!=0)
            $this->Error('Unknown compression method: '.$file);
	if (ord(fread($f,1))!=0)
            $this->Error('Unknown filter method: '.$file);
	if (ord(fread($f,1))!=0)
            $this->Error('Interlacing not supported: '.$file);
	fread($f,4);
	$parms='/DecodeParms <</Predictor 15 /Colors '.($ct==2 ? 3 : 1).' /BitsPerComponent '.$bpc.' /Columns '.$w.'>>';
	//Scan chunks looking for palette, transparency and image data
	$pal='';
	$trns='';
	$data='';
	do {
            $n=$this->_freadint($f);
            $type=fread($f,4);
            if ($type=='PLTE') {
                //Read palette
                $pal=fread($f,$n);
                fread($f,4);
            }
            elseif ($type=='tRNS') {
                //Read transparency info
                $t=fread($f,$n);
                if ($ct==0)
                    $trns=array(ord(substr($t,1,1)));
                elseif ($ct==2)
                    $trns=array(ord(substr($t,1,1)),ord(substr($t,3,1)),ord(substr($t,5,1)));
                else {
                    $pos=strpos($t,chr(0));
                    if (is_int($pos))
                        $trns=array($pos);
                }
                fread($f,4);
            }
            elseif ($type=='IDAT') {
                //Read image data block
                $data.=fread($f,$n);
                fread($f,4);
            }
            elseif ($type=='IEND')
                break;
            else
                fread($f,$n+4);
        } while($n);
	if ($colspace=='Indexed' and empty($pal))
            $this->Error('Missing pa…