89 Zeilen
1.9 KiB
PHP
89 Zeilen
1.9 KiB
PHP
<?php
|
|
declare(strict_types = 1);
|
|
|
|
namespace BaconQrCode\Renderer\Color;
|
|
|
|
use BaconQrCode\Exception;
|
|
|
|
final class Rgb implements ColorInterface
|
|
{
|
|
/**
|
|
* @var int
|
|
*/
|
|
private $red;
|
|
|
|
/**
|
|
* @var int
|
|
*/
|
|
private $green;
|
|
|
|
/**
|
|
* @var int
|
|
*/
|
|
private $blue;
|
|
|
|
/**
|
|
* @param int $red the red amount of the color, 0 to 255
|
|
* @param int $green the green amount of the color, 0 to 255
|
|
* @param int $blue the blue amount of the color, 0 to 255
|
|
*/
|
|
public function __construct(int $red, int $green, int $blue)
|
|
{
|
|
if ($red < 0 || $red > 255) {
|
|
throw new Exception\InvalidArgumentException('Red must be between 0 and 255');
|
|
}
|
|
|
|
if ($green < 0 || $green > 255) {
|
|
throw new Exception\InvalidArgumentException('Green must be between 0 and 255');
|
|
}
|
|
|
|
if ($blue < 0 || $blue > 255) {
|
|
throw new Exception\InvalidArgumentException('Blue must be between 0 and 255');
|
|
}
|
|
|
|
$this->red = $red;
|
|
$this->green = $green;
|
|
$this->blue = $blue;
|
|
}
|
|
|
|
public function getRed() : int
|
|
{
|
|
return $this->red;
|
|
}
|
|
|
|
public function getGreen() : int
|
|
{
|
|
return $this->green;
|
|
}
|
|
|
|
public function getBlue() : int
|
|
{
|
|
return $this->blue;
|
|
}
|
|
|
|
public function toRgb() : Rgb
|
|
{
|
|
return $this;
|
|
}
|
|
|
|
public function toCmyk() : Cmyk
|
|
{
|
|
$c = 1 - ($this->red / 255);
|
|
$m = 1 - ($this->green / 255);
|
|
$y = 1 - ($this->blue / 255);
|
|
$k = min($c, $m, $y);
|
|
|
|
return new Cmyk(
|
|
(int) (100 * ($c - $k) / (1 - $k)),
|
|
(int) (100 * ($m - $k) / (1 - $k)),
|
|
(int) (100 * ($y - $k) / (1 - $k)),
|
|
(int) (100 * $k)
|
|
);
|
|
}
|
|
|
|
public function toGray() : Gray
|
|
{
|
|
return new Gray((int) (($this->red * 0.21 + $this->green * 0.71 + $this->blue * 0.07) / 2.55));
|
|
}
|
|
}
|