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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Text; |
| 6 | |
| 7 | /** |
| 8 | * One positioned glyph in a {@see ShapedRun}. |
| 9 | * |
| 10 | * `glyphId` is the font's internal index; `sourceOffset` / `sourceLength` |
| 11 | * point back into the original UTF-8 string so callers can round-trip |
| 12 | * between glyphs and source characters (needed for selection, hit testing, |
| 13 | * and copy-paste extraction). |
| 14 | * |
| 15 | * `advanceX` / `advanceY` are the glyph's contribution to the line's |
| 16 | * advance after kerning is applied; offsets are positional tweaks from |
| 17 | * GPOS mark / attachment data (zero for the simple shaper). |
| 18 | * |
| 19 | * All distances are in PDF user-space units (1pt = 1/72in) — i.e. already |
| 20 | * scaled by `fontSizePt / unitsPerEm`. Layout consumes them directly without |
| 21 | * needing the original font metrics. |
| 22 | */ |
| 23 | final readonly class ShapedGlyph |
| 24 | { |
| 25 | public function __construct( |
| 26 | public int $glyphId, |
| 27 | public int $sourceOffset, |
| 28 | public int $sourceLength, |
| 29 | public float $advanceX, |
| 30 | public float $advanceY = 0.0, |
| 31 | public float $offsetX = 0.0, |
| 32 | public float $offsetY = 0.0, |
| 33 | ) {} |
| 34 | } |