47 Zeilen
927 B
PHP
47 Zeilen
927 B
PHP
<?php
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declare(strict_types = 1);
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namespace BaconQrCode\Renderer\Color;
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use BaconQrCode\Exception;
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final class Gray implements ColorInterface
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{
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/**
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* @var int
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*/
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private $gray;
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/**
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* @param int $gray the gray value between 0 (black) and 100 (white)
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*/
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public function __construct(int $gray)
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{
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if ($gray < 0 || $gray > 100) {
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throw new Exception\InvalidArgumentException('Gray must be between 0 and 100');
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}
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$this->gray = (int) $gray;
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}
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public function getGray() : int
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{
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return $this->gray;
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}
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public function toRgb() : Rgb
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{
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return new Rgb((int) ($this->gray * 2.55), (int) ($this->gray * 2.55), (int) ($this->gray * 2.55));
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}
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public function toCmyk() : Cmyk
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{
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return new Cmyk(0, 0, 0, 100 - $this->gray);
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}
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public function toGray() : Gray
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{
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return $this;
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}
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}
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