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1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Conformance\Constraint;
6
7use Phpdftk\Pdf\Conformance\Inspection\DocumentInspector;
8use Phpdftk\Pdf\Conformance\Profile\ConformanceProfile;
9use Phpdftk\Pdf\Conformance\Result\ConformanceViolation;
10use Phpdftk\Pdf\Conformance\Result\ViolationSeverity;
11
12/**
13 * ISO 23504-1 (PDF/R-1): Raster content validation.
14 *
15 * PDF/R-1 documents are intended for raster-only (scanned) content.
16 * This constraint warns if the document appears to contain non-raster
17 * content such as text or vector graphics (detected heuristically via
18 * font presence).
19 */
20final class RasterContentConstraint implements ConformanceConstraint
21{
22    public function check(DocumentInspector $inspector, ConformanceProfile $profile): array
23    {
24        if ($inspector->hasRasterOnlyContent()) {
25            return [];
26        }
27
28        return [
29            new ConformanceViolation(
30                clause: '6.1',
31                message: 'PDF/R-1 documents should contain raster-only content; text or vector content detected',
32                severity: ViolationSeverity::Warning,
33                objectPath: 'Document',
34            ),
35        ];
36    }
37}