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1<?php
2/**
3 * Pop PHP Framework (https://www.popphp.org/)
4 *
5 * @link       https://github.com/popphp/popphp-framework
6 * @author     Nick Sagona, III <dev@noladev.com>
7 * @copyright  Copyright (c) 2009-2026 NOLA Interactive, LLC.
8 * @license    https://www.popphp.org/license     New BSD License
9 */
10
11/**
12 * @namespace
13 */
14namespace Pop\Pdf\Build\Font\TrueType\Table;
15
16use Pop\Pdf\Build\Font;
17use Pop\Utils\ArrayObject as Data;
18use Pop\Utils\Exception;
19
20/**
21 * OS/2 table class
22 *
23 * @category   Pop
24 * @package    Pop\Pdf
25 * @author     Nick Sagona, III <dev@noladev.com>
26 * @copyright  Copyright (c) 2009-2026 NOLA Interactive, LLC.
27 * @license    https://www.popphp.org/license     New BSD License
28 * @version    5.2.7
29 */
30class Os2 extends AbstractTable
31{
32
33    /**
34     * Font table properties
35     * @var array
36     */
37    protected array $properties = [
38        'capHeight'  => 0,
39        'embeddable' => true,
40        'flags'      => null
41    ];
42
43    /**
44     * Constructor
45     *
46     * Instantiate a OTF 'OS/2' table object.
47     *
48     * @param Font\TrueType $font
49     * @throws Exception
50     */
51    public function __construct(Font\TrueType $font)
52    {
53        $this->properties['flags'] = new Data([
54            'isFixedPitch'  => false,
55            'isSerif'       => false,
56            'isSymbolic'    => false,
57            'isScript'      => false,
58            'isNonSymbolic' => false,
59            'isItalic'      => false,
60            'isAllCap'      => false,
61            'isSmallCap'    => false,
62            'isForceBold'   => false
63        ]);
64
65        $bytePos = $font->tableInfo['OS/2']->offset + 8;
66        $ary     = unpack("nfsType", $font->read($bytePos, 2));
67        $this->properties['embeddable'] = (($ary['fsType'] != 2) && (($ary['fsType'] & 0x200) == 0));
68
69        $bytePos = $font->tableInfo['OS/2']->offset + 30;
70        $ary     = unpack("nfamily_class", $font->read($bytePos, 2));
71        $familyClass = ($font->shiftToSigned($ary['family_class']) >> 8);
72
73        if ((($familyClass >= 1) && ($familyClass <= 5)) || ($familyClass == 7)) {
74            $this->properties['flags']['isSerif'] = true;
75        } else if ($familyClass == 8) {
76            $this->properties['flags']['isSerif'] = false;
77        }
78        if ($familyClass == 10) {
79            $this->properties['flags']['isScript'] = true;
80        }
81        if ($familyClass == 12) {
82            $this->properties['flags']['isSymbolic']    = true;
83            $this->properties['flags']['isNonSymbolic'] = false;
84        } else {
85            $this->properties['flags']['isSymbolic']    = false;
86            $this->properties['flags']['isNonSymbolic'] = true;
87        }
88
89        // Unicode bit-sniffing may not be necessary.
90        $bytePos += 3;
91        $ary = unpack(
92            'NunicodeRange1/' .
93            'NunicodeRange2/' .
94            'NunicodeRange3/' .
95            'NunicodeRange4', $font->read($bytePos, 16)
96        );
97
98        if (($ary['unicodeRange1'] == 1) && ($ary['unicodeRange2'] == 0) && ($ary['unicodeRange3'] == 0) && ($ary['unicodeRange4'] == 0)) {
99            $this->properties['flags']['isSymbolic']    = false;
100            $this->properties['flags']['isNonSymbolic'] = true;
101        }
102
103        $bytePos = $font->tableInfo['OS/2']->offset + 76;
104        $ary = unpack("ncap/", $font->read($bytePos, 2));
105        $this->properties['flags']['capHeight'] = $font->toEmSpace($font->shiftToSigned($ary['cap']));
106    }
107
108}