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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\HtmlToPdf\Layout; |
| 6 | |
| 7 | use Phpdftk\FontParser\FontFaceData; |
| 8 | |
| 9 | /** |
| 10 | * One face inside a CSS font family — a single `FontFaceData` with its |
| 11 | * `font-weight` / `font-style` / `font-stretch` metadata so |
| 12 | * {@see FontResolver} can run CSS Fonts 4 §6 font-matching (weight matching |
| 13 | * + style matching + stretch matching) over a multi-face family. |
| 14 | * |
| 15 | * Weight values follow the CSS 1–1000 keyword/integer system (400 = normal, |
| 16 | * 700 = bold). Style is the keyword string (`normal`, `italic`, or `oblique`) |
| 17 | * — normalised to lower-case at construction. Stretch is the percentage |
| 18 | * along the spec's [50%, 200%] axis (50 = ultra-condensed, 100 = normal, |
| 19 | * 200 = ultra-expanded). |
| 20 | */ |
| 21 | final readonly class FontFace |
| 22 | { |
| 23 | public FontFaceData $data; |
| 24 | public int $weight; |
| 25 | public string $style; |
| 26 | public float $stretch; |
| 27 | |
| 28 | public function __construct( |
| 29 | FontFaceData $data, |
| 30 | int $weight = 400, |
| 31 | string $style = 'normal', |
| 32 | float $stretch = 100.0, |
| 33 | ) { |
| 34 | if ($weight < 1 || $weight > 1000) { |
| 35 | throw new \InvalidArgumentException(sprintf( |
| 36 | 'FontFace weight must be 1-1000 per CSS Fonts 4 §3.2; got %d', |
| 37 | $weight, |
| 38 | )); |
| 39 | } |
| 40 | $lcStyle = strtolower($style); |
| 41 | if (!in_array($lcStyle, ['normal', 'italic', 'oblique'], true)) { |
| 42 | throw new \InvalidArgumentException(sprintf( |
| 43 | 'FontFace style must be normal|italic|oblique per CSS Fonts 4 §3.3; got "%s"', |
| 44 | $style, |
| 45 | )); |
| 46 | } |
| 47 | if ($stretch < 50.0 || $stretch > 200.0) { |
| 48 | throw new \InvalidArgumentException(sprintf( |
| 49 | 'FontFace stretch must be 50-200 percent per CSS Fonts 4 §3.4; got %.2f', |
| 50 | $stretch, |
| 51 | )); |
| 52 | } |
| 53 | $this->data = $data; |
| 54 | $this->weight = $weight; |
| 55 | $this->style = $lcStyle; |
| 56 | $this->stretch = $stretch; |
| 57 | } |
| 58 | } |