%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Output.php
*
* @since 2002-08-03
* @category Library
* @package Pdf
* @author Nicola Asuni <info@tecnick.com>
* @copyright 2002-2017 Nicola Asuni - Tecnick.com LTD
* @license http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
* @link https://github.com/tecnickcom/tc-lib-pdf
*
* This file is part of tc-lib-pdf software library.
*/
namespace Com\Tecnick\Pdf;
use \Com\Tecnick\Pdf\Font\Output as OutFont;
/**
* Com\Tecnick\Pdf\Output
*
* Output PDF data
*
* @since 2002-08-03
* @category Library
* @package Pdf
* @author Nicola Asuni <info@tecnick.com>
* @copyright 2002-2017 Nicola Asuni - Tecnick.com LTD
* @license http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
* @link https://github.com/tecnickcom/tc-lib-pdf
*/
abstract class Output
{
/**
* Array containing the ID of some PDF objects
*
* @var array
*/
protected $objid = array();
/**
* Returns the RAW PDF string
*
* @return string
*/
public function getOutPDFString()
{
$out = $this->getOutPDFHeader()
.$this->getOutPDFBody();
$startxref = strlen($out);
$offset = $this->getPDFObjectOffsets($out);
$out .= $this->getOutPDFXref($offset)
.$this->getOutPDFTrailer()
.'startxref'."\n"
.$startxref."\n"
.'%%EOF'."\n";
// @TODO: sign the document ...
return $out;
}
/**
* Returns the PDF document header
*
* @return string
*/
protected function getOutPDFHeader()
{
return '%PDF-'.$this->pdfver."\n"
."%\xE2\xE3\xCF\xD3\n";
}
/**
* Returns the raw PDF Body section
*
* @return string
*/
protected function getOutPDFBody()
{
$out = $this->page->getPdfPages($this->pon);
$out .= $this->graph->getOutExtGState($this->pon);
$this->pon = $this->graph->getObjectNumber();
$out .= $this->getOutOCG();
$outfont = new OutFont(
$this->font->getFonts(),
$this->pon,
$this->encrypt
);
$out .= $outfont->getFontsBlock();
$this->pon = $outfont->getObjectNumber();
$out .= $this->image->getOutImagesBlock($this->pon);
$this->pon = $outfont->getObjectNumber();
$out .= $this->color->getPdfSpotObjects($this->pon);
$out .= $this->graph->getOutGradientShaders($this->pon);
$this->pon = $this->graph->getObjectNumber();
$out .= $this->getOutXObjects();
$out .= $this->getOutResourcesDict();
$out .= $this->getOutDestinations();
$out .= $this->getOutEmbeddedFiles();
$out .= $this->getOutAnnotations();
$out .= $this->getOutJavascript();
$out .= $this->getOutBookmarks();
$enc = $this->encrypt->getEncryptionData();
if ($enc['encrypted']) {
$out .= $this->encrypt->getPdfEncryptionObj($this->pon);
}
$out .= $this->getOutSignatureFields();
$out .= $this->getOutSignature();
$out .= $this->getOutOutput();
$out .= $this->getOutXMP();
$out .= $this->getOutICC();
$out .= $this->getOutCatalog();
return $out;
}
/**
* Returns the ordered offset array for each object
*
* @param string $data Raw PDF data
*
* @return array
*/
protected function getPDFObjectOffsets($data)
{
preg_match_all('/(([0-9]+)[\s][0-9]+[\s]obj[\n])/i', $data, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
$offset = array();
foreach ($matches as $item) {
$offset[($item[2][0])] = $item[2][1];
}
ksort($offset);
return $offset;
}
/**
* Returns the PDF XREF section
*
* @param array $offset Ordered offset array for each PDF object
*
* @return string
*/
protected function getOutPDFXref($offset)
{
$out = 'xref'."\n"
.'0 '.($this->pon + 1)."\n"
.'0000000000 65535 f '."\n";
$freegen = ($this->pon + 2);
end($offset);
$lastobj = key($offset);
for ($idx = 1; $idx <= $lastobj; ++$idx) {
if (isset($offset[$idx])) {
$out .= sprintf('%010d 00000 n '."\n", $offset[$idx]);
} else {
$out .= sprintf('0000000000 %05d f '."\n", $freegen);
++$freegen;
}
}
return $out;
}
/**
* Returns the PDF Trailer section
*
* @param array $offset Ordered offset array for each PDF object
*
* @return string
*/
protected function getOutPDFTrailer()
{
$out = 'trailer'."\n"
.'<<'
.' /Size '.($this->pon + 1)
.' /Root '.$this->objid['catalog'].' 0 R'
.' /Info '.$this->objid['info'].' 0 R';
$enc = $this->encrypt->getEncryptionData();
if (!empty($enc['objid'])) {
$out .= ' /Encrypt '.$enc['objid'].' 0 R';
}
$out .= ' /ID [ <'.$this->fileid.'> <'.$this->fileid.'> ]'
.' >>'."\n";
return $out;
}
/**
* Returns the PDF object to include a standard sRGB_IEC61966-2.1 blackscaled ICC colour profile
*
* @return string
*/
protected function getOutICC()
{
if (!$this->pdfa && !$this->sRGB) {
return '';
}
$oid = ++$this->pon;
$this->objid['srgbicc'] = $oid;
$out = $oid.' 0 obj'."\n";
$icc = file_get_contents(dirname(__FILE__).'/include/sRGB.icc.z');
$icc = $this->encrypt->encryptString($icc, $oid);
$out .= '<<'
.'/N 3'
.' /Filter /FlateDecode'
.' /Length '.strlen($icc)
.'>>'
.' stream'."\n"
.$icc."\n"
.'endstream'."\n"
.'endobj';
return $out;
}
/**
* Set OutputIntent to sRGB IEC61966-2.1 if required
*
* @return string
*/
protected function getOutputIntents()
{
if (empty($this->objid['srgbicc']) || empty($this->objid['catalog'])) {
return '';
}
$oid = $this->objid['catalog'];
$out = ' /OutputIntents [<<'
.' /Type /OutputIntent'
.' /S /GTS_PDFA1'
.' /OutputCondition '.$this->getOutTextString('sRGB IEC61966-2.1', $oid)
.' /OutputConditionIdentifier '.$this->getOutTextString('sRGB IEC61966-2.1', $oid)
.' /RegistryName '.$this->getOutTextString('http://www.color.org', $oid)
.' /Info '.$this->getOutTextString('sRGB IEC61966-2.1', $oid)
.' /DestOutputProfile '.$this->objid['srgbicc'].' 0 R'
.' >>]';
return $out;
}
/**
* Set OutputIntent to sRGB IEC61966-2.1 if required
*
* @return string
*/
protected function getPDFLayers()
{
if (empty($this->pdflayer) || empty($this->objid['catalog'])) {
return '';
}
$oid = $this->objid['catalog'];
$lyrobjs = '';
$lyrobjs_off = '';
$lyrobjs_lock = '';
foreach ($this->pdflayer as $layer) {
$layer_obj_ref = ' '.$layer['objid'].' 0 R';
$lyrobjs .= $layer_obj_ref;
if ($layer['view'] === false) {
$lyrobjs_off .= $layer_obj_ref;
}
if ($layer['lock']) {
$lyrobjs_lock .= $layer_obj_ref;
}
}
$out = ' /OCProperties << /OCGs ['.$lyrobjs.' ]'
.' /D <<'
.' /Name '.$this->getOutTextString('Layers', $oid)
.' /Creator '.$this->getOutTextString($this->creator, $oid)
.' /BaseState /ON'
.' /OFF ['.$lyrobjs_off.']'
.' /Locked ['.$lyrobjs_lock.']'
.' /Intent /View'
.' /AS ['
.' << /Event /Print /OCGs ['.$lyrobjs.'] /Category [/Print] >>'
.' << /Event /View /OCGs ['.$lyrobjs.'] /Category [/View] >>'
.' ]'
.' /Order ['.$lyrobjs.']'
.' /ListMode /AllPages'
//.' /RBGroups ['..']'
//.' /Locked ['..']'
.' >>'
.' >>';
return $out;
}
/**
* Returns the PDF Catalog entry
*
* @return string
*/
protected function getOutCatalog()
{
// @TODO
return '';
}
/**
* Returns the PDF OCG entry
*
* @return string
*/
protected function getOutOCG()
{
// @TODO
return '';
}
/**
* Returns the PDF XObjects entry
*
* @return string
*/
protected function getOutXObjects()
{
// @TODO
return '';
}
/**
* Returns the PDF Resources Dictionary entry
*
* @return string
*/
protected function getOutResourcesDict()
{
// @TODO
return '';
}
/**
* Returns the PDF Destinations entry
*
* @return string
*/
protected function getOutDestinations()
{
// @TODO
return '';
}
/**
* Returns the PDF Embedded Files entry
*
* @return string
*/
protected function getOutEmbeddedFiles()
{
// @TODO
return '';
}
/**
* Returns the PDF Annotations entry
*
* @return string
*/
protected function getOutAnnotations()
{
// @TODO
return '';
}
/**
* Returns the PDF Javascript entry
*
* @return string
*/
protected function getOutJavascript()
{
// @TODO
return '';
}
/**
* Returns the PDF Bookmarks entry
*
* @return string
*/
protected function getOutBookmarks()
{
// @TODO
return '';
}
/**
* Returns the PDF Signature Fields entry
*
* @return string
*/
protected function getOutSignatureFields()
{
// @TODO
return '';
}
/**
* Returns the PDF signarure entry
*
* @return string
*/
protected function getOutSignature()
{
// @TODO
return '';
}
}
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