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