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<?php
namespace Intervention\Image;
class Constraint
{
/**
* Bit value of aspect ratio constraint
*/
const ASPECTRATIO = 1;
/**
* Bit value of upsize constraint
*/
const UPSIZE = 2;
/**
* Constraint size
*
* @var \Intervention\Image\Size
*/
private $size;
/**
* Integer value of fixed parameters
*
* @var integer
*/
private $fixed = 0;
/**
* Create a new constraint based on size
*
* @param Size $size
*/
public function __construct(Size $size)
{
$this->size = $size;
}
/**
* Returns current size of constraint
*
* @return \Intervention\Image\Size
*/
public function getSize()
{
return $this->size;
}
/**
* Fix the given argument in current constraint
* @param integer $type
* @return void
*/
public function fix($type)
{
$this->fixed = ($this->fixed & ~(1 << $type)) | (1 << $type);
}
/**
* Checks if given argument is fixed in current constraint
*
* @param integer $type
* @return boolean
*/
public function isFixed($type)
{
return (bool) ($this->fixed & (1 << $type));
}
/**
* Fixes aspect ratio in current constraint
*
* @return void
*/
public function aspectRatio()
{
$this->fix(self::ASPECTRATIO);
}
/**
* Fixes possibility to size up in current constraint
*
* @return void
*/
public function upsize()
{
$this->fix(self::UPSIZE);
}
}