<?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();
}
}