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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Pdf\Build\Font\TrueType\Table; |
| 15 | |
| 16 | /** |
| 17 | * GLYF table class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Pdf |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 5.0.0 |
| 25 | */ |
| 26 | class Glyf extends AbstractTable |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Font table properties |
| 31 | * @var array |
| 32 | */ |
| 33 | protected array $properties = [ |
| 34 | 'glyphs' => [], |
| 35 | 'glyphWidths' => [] |
| 36 | ]; |
| 37 | |
| 38 | /** |
| 39 | * Constructor |
| 40 | * |
| 41 | * Instantiate a TTF 'glyf' table object. |
| 42 | * |
| 43 | * @param \Pop\Pdf\Build\Font\TrueType $font |
| 44 | */ |
| 45 | public function __construct(\Pop\Pdf\Build\Font\TrueType $font) |
| 46 | { |
| 47 | $locaLength = count($font->tables['loca']->offsets); |
| 48 | $j = 0; |
| 49 | |
| 50 | foreach ($font->tables['loca']->offsets as $offset) { |
| 51 | $bytePos = $font->tableInfo['glyf']->offset + $offset; |
| 52 | $ary = unpack( |
| 53 | 'nnumberOfContours/' . |
| 54 | 'nxMin/' . |
| 55 | 'nyMin/' . |
| 56 | 'nxMax/' . |
| 57 | 'nyMax', $font->read($bytePos, 10) |
| 58 | ); |
| 59 | $ary = $font->shiftToSigned($ary); |
| 60 | $ary['xMin'] = $font->toEmSpace($ary['xMin']); |
| 61 | $ary['yMin'] = $font->toEmSpace($ary['yMin']); |
| 62 | $ary['xMax'] = $font->toEmSpace($ary['xMax']); |
| 63 | $ary['yMax'] = $font->toEmSpace($ary['yMax']); |
| 64 | $ary['width'] = $ary['xMin'] + $ary['xMax']; |
| 65 | $this->properties['glyphWidths'][] = $ary['width']; |
| 66 | |
| 67 | $bytePos += 10; |
| 68 | $ary['endPtsOfContours'] = []; |
| 69 | $ary['instructionLength'] = null; |
| 70 | $ary['instructions'] = null; |
| 71 | $ary['flags'] = null; |
| 72 | |
| 73 | // The simple and composite glyph descriptions may not be necessary. |
| 74 | // If simple glyph. |
| 75 | if ($ary['numberOfContours'] > 0) { |
| 76 | for ($i = 0; $i < $ary['numberOfContours']; $i++) { |
| 77 | $ar = unpack('nendPt', $font->read($bytePos, 2)); |
| 78 | $ary['endPtsOfContours'][$i] = $ar['endPt']; |
| 79 | $bytePos += 2; |
| 80 | } |
| 81 | $ar = unpack('ninstructionLength', $font->read($bytePos, 2)); |
| 82 | $ary['instructionLength'] = $ar['instructionLength']; |
| 83 | $bytePos += 2; |
| 84 | if ($ary['instructionLength'] > 0) { |
| 85 | for ($i = 0; $i < $ary['instructionLength']; $i++) { |
| 86 | $byte = $font->read($bytePos, 1); |
| 87 | if (strlen($byte) != 0) { |
| 88 | $ar = unpack('Cinstruction', $byte); |
| 89 | $ary['instructions'][$i] = $ar['instruction']; |
| 90 | $bytePos++; |
| 91 | } else { |
| 92 | $ary['instructions'][$i] = null; |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | $bytePos++; |
| 97 | $byte = $font->read($bytePos, 1); |
| 98 | if (strlen($byte) != 0) { |
| 99 | $ar = unpack('Cflags', $byte); |
| 100 | $ary['flags'] = $ar['flags']; |
| 101 | } else { |
| 102 | $ary['flags'] = 0; |
| 103 | } |
| 104 | if ($j < ($locaLength - 1)) { |
| 105 | $this->properties['glyphs'][] = $ary; |
| 106 | } |
| 107 | // Stopped here. Still need to get the x & y coordinates of the simple glyph. |
| 108 | // Else, if composite glyph. |
| 109 | } else { |
| 110 | if ($j < ($locaLength - 1)) { |
| 111 | // Composite glyph goes here. |
| 112 | } |
| 113 | } |
| 114 | $j++; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | } |