mpdf/src/Writer/OptionalContentWriter.php at development · kvr001/mpdf · GitHub

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<?php

namespace Mpdf\Writer;

use Mpdf\Strict;
use Mpdf\Mpdf;

final class OptionalContentWriter
{

use Strict;

/**
 * @var \Mpdf\Mpdf
 */
private $mpdf;

/**
 * @var \Mpdf\Writer\BaseWriter
 */
private $writer;

public function __construct(Mpdf $mpdf, BaseWriter $writer)
{
$this->mpdf = $mpdf;
$this->writer = $writer;
}

public function writeOptionalContentGroups() // _putocg Optional Content Groups
{
if ($this->mpdf->hasOC) {

$this->writer->object();
$this->mpdf->n_ocg_print = $this->mpdf->n;
$this->writer->write('<</Type /OCG /Name ' . $this->writer->string('Print only'));
$this->writer->write('/Usage <</Print <</PrintState /ON>> /View <</ViewState /OFF>>>>>>');
$this->writer->write('endobj');

$this->writer->object();
$this->mpdf->n_ocg_view = $this->mpdf->n;
$this->writer->write('<</Type /OCG /Name ' . $this->writer->string('Screen only'));
$this->writer->write('/Usage <</Print <</PrintState /OFF>> /View <</ViewState /ON>>>>>>');
$this->writer->write('endobj');

$this->writer->object();
$this->mpdf->n_ocg_hidden = $this->mpdf->n;
$this->writer->write('<</Type /OCG /Name ' . $this->writer->string('Hidden'));
$this->writer->write('/Usage <</Print <</PrintState /OFF>> /View <</ViewState /OFF>>>>>>');
$this->writer->write('endobj');
}

if (count($this->mpdf->layers)) {

ksort($this->mpdf->layers);
foreach ($this->mpdf->layers as $id => $layer) {
$this->writer->object();
$this->mpdf->layers[$id]['n'] = $this->mpdf->n;

if (isset($this->mpdf->layerDetails[$id]['name']) && $this->mpdf->layerDetails[$id]['name']) {
$name = $this->mpdf->layerDetails[$id]['name'];
} else {
$name = $layer['name'];
}

$this->writer->write('<</Type /OCG /Name ' . $this->writer->utf16BigEndianTextString($name) . '>>');
$this->writer->write('endobj');
}
}
}

}