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<?php
/**
* BaconQrCode
*
* @link http://github.com/Bacon/BaconQrCode For the canonical source repository
* @copyright 2013 Ben 'DASPRiD' Scholzen
* @license http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
*/
namespace BaconQrCode\Renderer\Color;
use BaconQrCode\Exception;
/**
* CMYK color.
*/
class Cmyk implements ColorInterface
{
/**
* Cyan value.
*
* @var integer
*/
protected $cyan;
/**
* Magenta value.
*
* @var integer
*/
protected $magenta;
/**
* Yellow value.
*
* @var integer
*/
protected $yellow;
/**
* Black value.
*
* @var integer
*/
protected $black;
/**
* Creates a new CMYK color.
*
* @param integer $cyan
* @param integer $magenta
* @param integer $yellow
* @param integer $black
*/
public function __construct($cyan, $magenta, $yellow, $black)
{
if ($cyan < 0 || $cyan > 100) {
throw new Exception\InvalidArgumentException('Cyan must be between 0 and 100');
}
if ($magenta < 0 || $magenta > 100) {
throw new Exception\InvalidArgumentException('Magenta must be between 0 and 100');
}
if ($yellow < 0 || $yellow > 100) {
throw new Exception\InvalidArgumentException('Yellow must be between 0 and 100');
}
if ($black < 0 || $black > 100) {
throw new Exception\InvalidArgumentException('Black must be between 0 and 100');
}
$this->cyan = (int) $cyan;
$this->magenta = (int) $magenta;
$this->yellow = (int) $yellow;
$this->black = (int) $black;
}
/**
* Returns the cyan value.
*
* @return integer
*/
public function getCyan()
{
return $this->cyan;
}
/**
* Returns the magenta value.
*
* @return integer
*/
public function getMagenta()
{
return $this->magenta;
}
/**
* Returns the yellow value.
*
* @return integer
*/
public function getYellow()
{
return $this->yellow;
}
/**
* Returns the black value.
*
* @return integer
*/
public function getBlack()
{
return $this->black;
}
/**
* toRgb(): defined by ColorInterface.
*
* @see ColorInterface::toRgb()
* @return Rgb
*/
public function toRgb()
{
$k = $this->black / 100;
$c = (-$k * $this->cyan + $k * 100 + $this->cyan) / 100;
$m = (-$k * $this->magenta + $k * 100 + $this->magenta) / 100;
$y = (-$k * $this->yellow + $k * 100 + $this->yellow) / 100;
return new Rgb(
-$c * 255 + 255,
-$m * 255 + 255,
-$y * 255 + 255
);
}
/**
* toCmyk(): defined by ColorInterface.
*
* @see ColorInterface::toCmyk()
* @return Cmyk
*/
public function toCmyk()
{
return $this;
}
/**
* toGray(): defined by ColorInterface.
*
* @see ColorInterface::toGray()
* @return Gray
*/
public function toGray()
{
return $this->toRgb()->toGray();
}
}