Alpha.php
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Alpha.php
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	<?php
	declare(strict_types = 1);

	namespace BaconQrCode\Renderer\Color;

	use BaconQrCode\Exception;

	final class Alpha implements ColorInterface
	{
	/**
	* @var int
	*/
	private $alpha;

	/**
	* @var ColorInterface
	*/
	private $baseColor;

	/**
	* @param int $alpha the alpha value, 0 to 100
	*/
	public function __construct(int $alpha, ColorInterface $baseColor)
	{
	if ($alpha < 0 \|\| $alpha > 100) {
	throw new Exception\InvalidArgumentException('Alpha must be between 0 and 100');
	}

	$this->alpha = $alpha;
	$this->baseColor = $baseColor;
	}

	public function getAlpha() : int
	{
	return $this->alpha;
	}

	public function getBaseColor() : ColorInterface
	{
	return $this->baseColor;
	}

	public function toRgb() : Rgb
	{
	return $this->baseColor->toRgb();
	}

	public function toCmyk() : Cmyk
	{
	return $this->baseColor->toCmyk();
	}

	public function toGray() : Gray
	{
	return $this->baseColor->toGray();
	}
	}