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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Text; |
| 6 | |
| 7 | /** |
| 8 | * Text rendering direction within a single shaped run. |
| 9 | * |
| 10 | * - `Ltr` — horizontal, left-to-right. |
| 11 | * - `Rtl` — horizontal, right-to-left (logical-order shaping; visual reorder |
| 12 | * is the bidi reorderer's job, not the shaper's). |
| 13 | * - `Ttb` — vertical, top-to-bottom. For vertical-writing-mode layouts; |
| 14 | * uses the font's vertical advance metrics when available. |
| 15 | */ |
| 16 | enum ShapingDirection |
| 17 | { |
| 18 | case Ltr; |
| 19 | case Rtl; |
| 20 | case Ttb; |
| 21 | } |