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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\HtmlToPdf\Layout; |
| 6 | |
| 7 | /** |
| 8 | * One active float inside a {@see FloatContext}. Stored as a value |
| 9 | * object so {@see FloatContext} stays free of mutation accidents. |
| 10 | */ |
| 11 | final readonly class FloatItem |
| 12 | { |
| 13 | /** |
| 14 | * @param array<string, mixed>|null $shape CSS Shapes 1 §3 exclusion |
| 15 | * shape (a kind-keyed dict: `circle` / `ellipse` / `polygon` |
| 16 | * / `path`), or null for the float's bounding rectangle. |
| 17 | */ |
| 18 | public function __construct( |
| 19 | /** `'left'` or `'right'` per CSS 2.1 §9.5. */ |
| 20 | public string $side, |
| 21 | public float $left, |
| 22 | public float $top, |
| 23 | public float $width, |
| 24 | public float $height, |
| 25 | /** |
| 26 | * CSS Shapes 1 §3 — when set, describes a per-Y exclusion |
| 27 | * shape carved out of the float's box. The default `null` |
| 28 | * means "axis-aligned rectangle of width × height" (the |
| 29 | * pre-shapes behaviour). When non-null, `FloatContext`'s |
| 30 | * leftEdgeAt / rightEdgeAt evaluate the shape at the line's |
| 31 | * Y instead of using the bounding rect. |
| 32 | * |
| 33 | * `kind: 'circle'` carries center coordinates `(cx, cy)` |
| 34 | * relative to the FloatItem's top-left, plus radius `r`. |
| 35 | */ |
| 36 | public ?array $shape = null, |
| 37 | /** |
| 38 | * CSS 2.1 §9.5.1 / §9.5.2 — the float's MARGIN box. Float-vs- |
| 39 | * float placement and `clear` settle against this, never |
| 40 | * against the (possibly contracted) exclusion rect above: a |
| 41 | * `shape-outside: content-box` float still occupies its full |
| 42 | * margin box as far as other floats are concerned. |
| 43 | * |
| 44 | * Null means "same as the exclusion rect", which is the case |
| 45 | * whenever `shape-outside` is absent — the overwhelming |
| 46 | * default, and byte-identical to the pre-shapes behaviour. |
| 47 | */ |
| 48 | public ?float $marginLeft = null, |
| 49 | public ?float $marginTop = null, |
| 50 | public ?float $marginWidth = null, |
| 51 | public ?float $marginHeight = null, |
| 52 | ) {} |
| 53 | |
| 54 | /** Margin-box left edge, falling back to the exclusion rect. */ |
| 55 | public function marginBoxLeft(): float |
| 56 | { |
| 57 | return $this->marginLeft ?? $this->left; |
| 58 | } |
| 59 | |
| 60 | /** Margin-box top edge, falling back to the exclusion rect. */ |
| 61 | public function marginBoxTop(): float |
| 62 | { |
| 63 | return $this->marginTop ?? $this->top; |
| 64 | } |
| 65 | |
| 66 | /** Margin-box width, falling back to the exclusion rect. */ |
| 67 | public function marginBoxWidth(): float |
| 68 | { |
| 69 | return $this->marginWidth ?? $this->width; |
| 70 | } |
| 71 | |
| 72 | /** Margin-box height, falling back to the exclusion rect. */ |
| 73 | public function marginBoxHeight(): float |
| 74 | { |
| 75 | return $this->marginHeight ?? $this->height; |
| 76 | } |
| 77 | } |