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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 $crop |
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*/ |
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class Crop extends BaseManipulator |
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{ |
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/** |
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* Perform crop 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 $image) |
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{ |
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$coordinates = $this->getCoordinates($image); |
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|
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if ($coordinates) { |
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$coordinates = $this->limitToImageBoundaries($image, $coordinates); |
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|
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$image->crop( |
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$coordinates[0], |
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$coordinates[1], |
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$coordinates[2], |
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$coordinates[3] |
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); |
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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 coordinates. |
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* |
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* @param Image $image The source image. |
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* |
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* @return int[]|null The resolved coordinates. |
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* |
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* @psalm-return array{0: int, 1: int, 2: int, 3: int}|null |
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*/ |
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public function getCoordinates(Image $image) |
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{ |
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if (null === $this->crop) { |
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return; |
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} |
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|
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$coordinates = explode(',', $this->crop); |
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|
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if (4 !== count($coordinates) or |
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(!is_numeric($coordinates[0])) or |
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(!is_numeric($coordinates[1])) or |
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(!is_numeric($coordinates[2])) or |
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(!is_numeric($coordinates[3])) or |
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($coordinates[0] <= 0) or |
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($coordinates[1] <= 0) or |
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($coordinates[2] < 0) or |
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($coordinates[3] < 0) or |
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($coordinates[2] >= $image->width()) or |
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($coordinates[3] >= $image->height())) { |
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return; |
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} |
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|
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return [ |
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(int) $coordinates[0], |
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(int) $coordinates[1], |
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(int) $coordinates[2], |
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(int) $coordinates[3], |
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]; |
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} |
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|
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/** |
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* Limit coordinates to image boundaries. |
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* |
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* @param Image $image The source image. |
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* @param int[] $coordinates The coordinates. |
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* |
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* @return int[] The limited coordinates. |
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*/ |
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public function limitToImageBoundaries(Image $image, array $coordinates) |
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{ |
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if ($coordinates[0] > ($image->width() - $coordinates[2])) { |
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$coordinates[0] = $image->width() - $coordinates[2]; |
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} |
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|
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if ($coordinates[1] > ($image->height() - $coordinates[3])) { |
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$coordinates[1] = $image->height() - $coordinates[3]; |
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} |
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|
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return $coordinates; |
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} |
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} |
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|
