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1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Core\Graphics\XObject;
6
7use Phpdftk\Pdf\Core\PdfDictionary;
8use Phpdftk\Pdf\Core\PdfName;
9use Phpdftk\Pdf\Core\PdfReference;
10use Phpdftk\Pdf\Core\PdfStream;
11use Phpdftk\Pdf\Core\DeprecatedPdfFeature;
12
13/**
14 * PostScript XObject (/Subtype /PS).
15 * ISO 32000-2 section 8.8.2. Deprecated since PDF 1.7.1.
16 * The stream data contains the PostScript language code.
17 */
18#[DeprecatedPdfFeature(since: '1.7.1', removedIn: '2.0')]
19class PostScriptXObject extends PdfStream
20{
21    public const PDF_TYPE    = 'XObject';
22    public const PDF_SUBTYPE = 'PS';
23
24    public ?PdfReference $level1 = null; // /Level1 - Level 1 PostScript fallback stream
25
26    public function __construct(string $data = '')
27    {
28        parent::__construct(new PdfDictionary(), $data);
29    }
30
31    public function toPdf(): string
32    {
33        $this->dictionary->set('Type', new PdfName(self::PDF_TYPE));
34        $this->dictionary->set('Subtype', new PdfName(self::PDF_SUBTYPE));
35
36        if ($this->level1 !== null) {
37            $this->dictionary->set('Level1', $this->level1);
38        }
39
40        return parent::toPdf();
41    }
42}