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<?php
namespace Drupal\Core\Image;
use Drupal\Core\ImageToolkit\ImageToolkitManager;
/**
* Provides a factory for image objects.
*/
class ImageFactory {
/**
* The image toolkit plugin manager.
*
* @var \Drupal\Core\ImageToolkit\ImageToolkitManager
*/
protected $toolkitManager;
/**
* The image toolkit ID to use for this factory.
*
* @var string
*/
protected $toolkitId;
/**
* Constructs a new ImageFactory object.
*
* @param \Drupal\Core\ImageToolkit\ImageToolkitManager $toolkit_manager
* The image toolkit plugin manager.
*/
public function __construct(ImageToolkitManager $toolkit_manager) {
$this->toolkitManager = $toolkit_manager;
$this->toolkitId = $this->toolkitManager->getDefaultToolkitId();
}
/**
* Sets the ID of the image toolkit.
*
* @param string $toolkit_id
* The ID of the image toolkit to use for this image factory.
*
* @return $this
*/
public function setToolkitId($toolkit_id) {
$this->toolkitId = $toolkit_id;
return $this;
}
/**
* Gets the ID of the image toolkit currently in use.
*
* @return string
* The ID of the image toolkit in use by the image factory.
*/
public function getToolkitId() {
return $this->toolkitId;
}
/**
* Constructs a new Image object.
*
* Normally, the toolkit set as default in the admin UI is used by the
* factory to create new Image objects. This can be overridden through
* \Drupal\Core\Image\ImageInterface::setToolkitId() so that any new Image
* object created will use the new toolkit specified. Finally, a single
* Image object can be created using a specific toolkit, regardless of the
* current factory settings, by passing its plugin ID in the $toolkit_id
* argument.
*
* @param string|null $source
* (optional) The path to an image file, or NULL to construct the object
* with no image source.
* @param string|null $toolkit_id
* (optional) The ID of the image toolkit to use for this image, or NULL
* to use the current toolkit.
*
* @return \Drupal\Core\Image\ImageInterface
* An Image object.
*
* @see ImageFactory::setToolkitId()
*/
public function get($source = NULL, $toolkit_id = NULL) {
$toolkit_id = $toolkit_id ?: $this->toolkitId;
return new Image($this->toolkitManager->createInstance($toolkit_id), $source);
}
/**
* Returns the image file extensions supported by the toolkit.
*
* @param string|null $toolkit_id
* (optional) The ID of the image toolkit to use for checking, or NULL
* to use the current toolkit.
*
* @return array
* An array of supported image file extensions (e.g. png/jpeg/gif).
*
* @see \Drupal\Core\ImageToolkit\ImageToolkitInterface::getSupportedExtensions()
*/
public function getSupportedExtensions($toolkit_id = NULL) {
$toolkit_id = $toolkit_id ?: $this->toolkitId;
$definition = $this->toolkitManager->getDefinition($toolkit_id);
return call_user_func($definition['class'] . '::getSupportedExtensions');
}
}