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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Raster\Painter; |
| 6 | |
| 7 | use Phpdftk\Raster\RasterSurface; |
| 8 | use Phpdftk\Raster\RgbaPixel; |
| 9 | use Phpdftk\Raster\BlendMode; |
| 10 | |
| 11 | /** |
| 12 | * Surface painter — primitive tree → pixels. |
| 13 | * |
| 14 | * Phase 4C.1 implements the concrete painter. The interface is |
| 15 | * stable from the scaffold so call sites in svg-to-pdf and |
| 16 | * html-to-pdf can be written against it now. |
| 17 | * |
| 18 | * The painter is stateful with respect to the surface (which it |
| 19 | * writes into) but stateless across primitives — each call is a |
| 20 | * self-contained drawing op. Caller manages the graphics-state |
| 21 | * stack at the translator layer. |
| 22 | */ |
| 23 | interface PainterInterface |
| 24 | { |
| 25 | /** |
| 26 | * Fill a path defined by a sequence of PDF-style path operators |
| 27 | * (`m`, `l`, `c`, `v`, `y`, `h`) plus the SVG arc-to-cubic |
| 28 | * conversion svg-to-pdf already does. The fill colour is |
| 29 | * applied to all pixels inside the winding-rule-determined |
| 30 | * interior. |
| 31 | * |
| 32 | * @param list<array{op: string, args: list<float>}> $path |
| 33 | */ |
| 34 | public function fillPath(array $path, RgbaPixel $fill, string $fillRule = 'nonzero'): void; |
| 35 | |
| 36 | /** |
| 37 | * Stroke a path with the given colour and width. Stroke |
| 38 | * geometry (linecap, linejoin, dasharray) follows the SVG / |
| 39 | * CSS conventions. |
| 40 | * |
| 41 | * @param list<array{op: string, args: list<float>}> $path |
| 42 | */ |
| 43 | public function strokePath(array $path, RgbaPixel $stroke, float $width): void; |
| 44 | |
| 45 | /** |
| 46 | * Composite another surface onto this one at `(x, y)` with the |
| 47 | * given blend mode. Source-over by default — the standard |
| 48 | * Porter-Duff "src over dst" rule. Other blend modes go through |
| 49 | * the CSS Compositing 1 / 2 math (4C.2). |
| 50 | */ |
| 51 | public function compositeSurface( |
| 52 | RasterSurface $source, |
| 53 | int $x, |
| 54 | int $y, |
| 55 | BlendMode $blendMode = BlendMode::Normal, |
| 56 | ): void; |
| 57 | } |