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<?php namespace League\Glide\Manipulators; use Intervention\Image\Image; /** * @property string|null $con */ class Contrast extends BaseManipulator { /** * Perform contrast image manipulation. * * @param Image $image The source image. * * @return Image The manipulated image. */ public function run(Image $image) { $contrast = $this->getContrast(); if (null !== $contrast) { $image->contrast($contrast); } return $image; } /** * Resolve contrast amount. * * @return string The resolved contrast amount. */ public function getContrast() { if (null === $this->con || !preg_match('/^-*[0-9]+$/', $this->con)) { return; } if ($this->con < -100 or $this->con > 100) { return; } return (int) $this->con; } }