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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\SvgToPdf\Text; |
| 6 | |
| 7 | /** |
| 8 | * Seam that lets an embedding document hand its own already-registered |
| 9 | * fonts to SVG text painting. |
| 10 | * |
| 11 | * Standalone SVG rendering has no font machinery beyond the 14 standard |
| 12 | * PDF fonts (see {@see FontResolver}). But when an SVG is embedded in an |
| 13 | * HTML document — inline `<svg>`, or an SVG `background-image` — that |
| 14 | * document has already parsed its `@font-face` rules, matched families |
| 15 | * per CSS Fonts 4 §6, and embedded the chosen faces in the PDF. SVG text |
| 16 | * inherits the same `font-family` cascade as the surrounding HTML |
| 17 | * (SVG 2 §11.5 defers font selection wholesale to CSS Fonts), so it must |
| 18 | * resolve to the same face — otherwise `<div>Hi</div>` and |
| 19 | * `<svg><text>Hi</text></svg>` in one document render in different |
| 20 | * typefaces. |
| 21 | * |
| 22 | * Implementations return `null` when they cannot satisfy the request; |
| 23 | * the translator then falls back to its built-in standard-14 resolver. |
| 24 | */ |
| 25 | interface DocumentFontProvider |
| 26 | { |
| 27 | /** |
| 28 | * @param list<string> $families Ordered `font-family` list, as |
| 29 | * authored (unquoted, untrimmed of case). |
| 30 | * @param string|null $weight Raw CSS `font-weight` (`bold`, `600`, …). |
| 31 | * @param string|null $style Raw CSS `font-style` (`italic`, …). |
| 32 | */ |
| 33 | public function resolveDocumentFont(array $families, ?string $weight, ?string $style): ?DocumentFont; |
| 34 | } |