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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Toolkit\Stamper; |
| 6 | |
| 7 | /** |
| 8 | * Predefined stamp positions on a page. |
| 9 | */ |
| 10 | enum StampPosition |
| 11 | { |
| 12 | case TopLeft; |
| 13 | case TopCenter; |
| 14 | case TopRight; |
| 15 | case Center; |
| 16 | case BottomLeft; |
| 17 | case BottomCenter; |
| 18 | case BottomRight; |
| 19 | |
| 20 | /** |
| 21 | * Compute X/Y coordinates for text placement given page dimensions and margins. |
| 22 | * |
| 23 | * @return array{float, float} [x, y] |
| 24 | */ |
| 25 | public function computeCoordinates( |
| 26 | float $pageWidth, |
| 27 | float $pageHeight, |
| 28 | float $contentWidth, |
| 29 | float $contentHeight, |
| 30 | float $margin = 36.0, |
| 31 | ): array { |
| 32 | return match ($this) { |
| 33 | self::TopLeft => [$margin, $pageHeight - $margin - $contentHeight], |
| 34 | self::TopCenter => [($pageWidth - $contentWidth) / 2, $pageHeight - $margin - $contentHeight], |
| 35 | self::TopRight => [$pageWidth - $margin - $contentWidth, $pageHeight - $margin - $contentHeight], |
| 36 | self::Center => [($pageWidth - $contentWidth) / 2, ($pageHeight - $contentHeight) / 2], |
| 37 | self::BottomLeft => [$margin, $margin], |
| 38 | self::BottomCenter => [($pageWidth - $contentWidth) / 2, $margin], |
| 39 | self::BottomRight => [$pageWidth - $margin - $contentWidth, $margin], |
| 40 | }; |
| 41 | } |
| 42 | } |