Code Coverage
 
Lines
Functions and Methods
Classes and Traits
Total
76.92%
20 / 26
0.00%
0 / 2
 CRAP
0.00%
0 / 1
InterpolationMethodCss
76.92%
20 / 26
0.00%
0 / 2
 27.95
0.00%
0 / 1
 __construct
0.00%
0 / 1
0.00%
0 / 1
 2
 serialise
80.00%
20 / 25
0.00%
0 / 1
 24.53
1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Css\Value;
6
7/**
8 * Internal helper — serialise an `in <space> [<hue-interp> hue]`
9 * clause for the CSS Images 4 §3.1.2 gradient interpolation
10 * method. Centralises the colorspace→string + hue-interp→string
11 * mapping so all three gradient types render the clause the
12 * same way.
13 */
14final class InterpolationMethodCss
15{
16    private function __construct() {}
17
18    public static function serialise(?ColorSpace $space, ?HueInterpolation $hue): string
19    {
20        if ($space === null) {
21            return '';
22        }
23        $name = match ($space) {
24            ColorSpace::sRGB => 'srgb',
25            ColorSpace::sRGBLinear => 'srgb-linear',
26            ColorSpace::DisplayP3 => 'display-p3',
27            ColorSpace::DisplayP3Linear => 'display-p3-linear',
28            ColorSpace::A98RGB => 'a98-rgb',
29            ColorSpace::A98RGBLinear => 'a98-rgb-linear',
30            ColorSpace::ProPhotoRGB => 'prophoto-rgb',
31            ColorSpace::ProPhotoRGBLinear => 'prophoto-rgb-linear',
32            ColorSpace::Rec2020 => 'rec2020',
33            ColorSpace::Rec2020Linear => 'rec2020-linear',
34            ColorSpace::Lab => 'lab',
35            ColorSpace::Lch => 'lch',
36            ColorSpace::OKLab => 'oklab',
37            ColorSpace::OKLCH => 'oklch',
38            ColorSpace::XYZ => 'xyz',
39            ColorSpace::XYZD50 => 'xyz-d50',
40            ColorSpace::XYZD65 => 'xyz-d65',
41            ColorSpace::HWB => 'hwb',
42        };
43        $out = ' in ' . $name;
44        if ($hue !== null) {
45            $out .= ' ' . $hue->value . ' hue';
46        }
47        return $out;
48    }
49}