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<?php
/**
* This file is part of FPDI
*
* @package setasign\Fpdi
* @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
*/
namespace setasign\Fpdi\Tcpdf;
use setasign\Fpdi\FpdiTrait;
use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
use setasign\Fpdi\PdfParser\Filter\AsciiHex;
use setasign\Fpdi\PdfParser\PdfParserException;
use setasign\Fpdi\PdfParser\Type\PdfHexString;
use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
use setasign\Fpdi\PdfParser\Type\PdfNull;
use setasign\Fpdi\PdfParser\Type\PdfNumeric;
use setasign\Fpdi\PdfParser\Type\PdfStream;
use setasign\Fpdi\PdfParser\Type\PdfString;
use setasign\Fpdi\PdfParser\Type\PdfType;
use setasign\Fpdi\PdfParser\Type\PdfTypeException;
/**
* Class Fpdi
*
* This class let you import pages of existing PDF documents into a reusable structure for TCPDF.
*
* @method _encrypt_data(int $n, string $s) string
*/
class Fpdi extends \TCPDF
{
use FpdiTrait {
writePdfType as fpdiWritePdfType;
useImportedPage as fpdiUseImportedPage;
}
/**
* FPDI version
*
* @string
*/
const VERSION = '2.3.7';
/**
* A counter for template ids.
*
* @var int
*/
protected $templateId = 0;
/**
* The currently used object number.
*
* @var int|null
*/
protected $currentObjectNumber;
protected function _enddoc()
{
parent::_enddoc();
$this->cleanUp();
}
/**
* Get the next template id.
*
* @return int
*/
protected function getNextTemplateId()
{
return $this->templateId++;
}
/**
* Draws an imported page onto the page or another template.
*
* Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
* aspect ratio.
*
* @param mixed $tpl The template id
* @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
* with the keys "x", "y", "width", "height", "adjustPageSize".
* @param float|int $y The ordinate of upper-left corner.
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @param bool $adjustPageSize
* @return array The size
* @see FpdiTrait::getTemplateSize()
*/
public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
{
return $this->useImportedPage($tpl, $x, $y, $width, $height, $adjustPageSize);
}
/**
* Draws an imported page onto the page.
*
* Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
* aspect ratio.
*
* @param mixed $pageId The page id
* @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
* with the keys "x", "y", "width", "height", "adjustPageSize".
* @param float|int $y The ordinate of upper-left corner.
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @param bool $adjustPageSize
* @return array The size.
* @see Fpdi::getTemplateSize()
*/
public function useImportedPage($pageId, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
{
$size = $this->fpdiUseImportedPage($pageId, $x, $y, $width, $height, $adjustPageSize);
if ($this->inxobj) {
$importedPage = $this->importedPages[$pageId];
$this->xobjects[$this->xobjid]['importedPages'][$importedPage['id']] = $pageId;
}
return $size;
}
/**
* Get the size of an imported page.
*
* Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
* aspect ratio.
*
* @param mixed $tpl The template id
* @param float|int|null $width The width.
* @param float|int|null $height The height.
* @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
*/
public function getTemplateSize($tpl, $width = null, $height = null)
{
return $this->getImportedPageSize($tpl, $width, $height);
}
/**
* @inheritdoc
* @return string
*/
protected function _getxobjectdict()
{
$out = parent::_getxobjectdict();
foreach ($this->importedPages as $key => $pageData) {
$out .= '/' . $pageData['id'] . ' ' . $pageData['objectNumber'] . ' 0 R ';
}
return $out;
}
/**
* @inheritdoc
* @throws CrossReferenceException
* @throws PdfParserException
*/
protected function _putxobjects()
{
foreach ($this->importedPages as $key => $pageData) {
$this->currentObjectNumber = $this->_newobj();
$this->importedPages[$key]['objectNumber'] = $this->currentObjectNumber;
$this->currentReaderId = $pageData['readerId'];
$this->writePdfType($pageData['stream']);
$this->_put('endobj');
}
foreach (\array_keys($this->readers) as $readerId) {
$parser = $this->getPdfReader($readerId)->getParser();
$this->currentReaderId = $readerId;
while (($objectNumber = \array_pop($this->objectsToCopy[$readerId])) !== null) {
try {
$object = $parser->getIndirectObject($objectNumber);
} catch (CrossReferenceException $e) {
if ($e->getCode() === CrossReferenceException::OBJECT_NOT_FOUND) {
$object = PdfIndirectObject::create($objectNumber, 0, new PdfNull());
} else {
throw $e;
}
}
$this->writePdfType($object);
}
}
// let's prepare resources for imported pages in templates
foreach ($this->xobjects as $xObjectId => $data) {
if (!isset($data['importedPages'])) {
continue;
}
foreach ($data['importedPages'] as $id => $pageKey) {
$page = $this->importedPages[$pageKey];
$this->xobjects[$xObjectId]['xobjects'][$id] = ['n' => $page['objectNumber']];
}
}
parent::_putxobjects();
$this->currentObjectNumber = null;
}
/**
* Append content to the buffer of TCPDF.
*
* @param string $s
* @param bool $newLine
*/
protected function _put($s, $newLine = true)
{
if ($newLine) {
$this->setBuffer($s . "\n");
} else {
$this->setBuffer($s);
}
}
/**
* Begin a new object and return the object number.
*
* @param int|string $objid Object ID (leave empty to get a new ID).
* @return int object number
*/
protected function _newobj($objid = '')
{
$this->_out($this->_getobj($objid));
return $this->n;
}
/**
* Writes a PdfType object to the resulting buffer.
*
* @param PdfType $value
* @throws PdfTypeException
*/
protected function writePdfType(PdfType $value)
{
if (!$this->encrypted) {
$this->fpdiWritePdfType($value);
return;
}
if ($value instanceof PdfString) {
$string = PdfString::unescape($value->value);
$string = $this->_encrypt_data($this->currentObjectNumber, $string);
$value->value = \TCPDF_STATIC::_escape($string);
} elseif ($value instanceof PdfHexString) {
$filter = new AsciiHex();
$string = $filter->decode($value->value);
$string = $this->_encrypt_data($this->currentObjectNumber, $string);
$value->value = $filter->encode($string, true);
} elseif ($value instanceof PdfStream) {
$stream = $value->getStream();
$stream = $this->_encrypt_data($this->currentObjectNumber, $stream);
$dictionary = $value->value;
$dictionary->value['Length'] = PdfNumeric::create(\strlen($stream));
$value = PdfStream::create($dictionary, $stream);
} elseif ($value instanceof PdfIndirectObject) {
/**
* @var PdfIndirectObject $value
*/
$this->currentObjectNumber = $this->objectMap[$this->currentReaderId][$value->objectNumber];
}
$this->fpdiWritePdfType($value);
}
}
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