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<?php
namespace League\Glide\Manipulators;
use Intervention\Image\Image;
/**
* @property string $crop
*/
class Crop extends BaseManipulator
{
/**
* Perform crop image manipulation.
*
* @param Image $image The source image.
*
* @return Image The manipulated image.
*/
public function run(Image $image)
{
$coordinates = $this->getCoordinates($image);
if ($coordinates) {
$coordinates = $this->limitToImageBoundaries($image, $coordinates);
$image->crop(
$coordinates[0],
$coordinates[1],
$coordinates[2],
$coordinates[3]
);
}
return $image;
}
/**
* Resolve coordinates.
*
* @param Image $image The source image.
*
* @return int[] The resolved coordinates.
*/
public function getCoordinates(Image $image)
{
if (null === $this->crop) {
return;
}
$coordinates = explode(',', $this->crop);
if (4 !== count($coordinates) or
(!is_numeric($coordinates[0])) or
(!is_numeric($coordinates[1])) or
(!is_numeric($coordinates[2])) or
(!is_numeric($coordinates[3])) or
($coordinates[0] <= 0) or
($coordinates[1] <= 0) or
($coordinates[2] < 0) or
($coordinates[3] < 0) or
($coordinates[2] >= $image->width()) or
($coordinates[3] >= $image->height())) {
return;
}
return [
(int) $coordinates[0],
(int) $coordinates[1],
(int) $coordinates[2],
(int) $coordinates[3],
];
}
/**
* Limit coordinates to image boundaries.
*
* @param Image $image The source image.
* @param int[] $coordinates The coordinates.
*
* @return int[] The limited coordinates.
*/
public function limitToImageBoundaries(Image $image, array $coordinates)
{
if ($coordinates[0] > ($image->width() - $coordinates[2])) {
$coordinates[0] = $image->width() - $coordinates[2];
}
if ($coordinates[1] > ($image->height() - $coordinates[3])) {
$coordinates[1] = $image->height() - $coordinates[3];
}
return $coordinates;
}
}