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