class Desaturate

Defines GD2 Desaturate operation.

Plugin annotation

@ImageToolkitOperation(
  id = "gd_desaturate",
  toolkit = "gd",
  operation = "desaturate",
  label = @Translation("Desaturate"),
  description = @Translation("Converts an image to grayscale.")
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements \Drupal\Component\Plugin\PluginInspectionInterface, \Drupal\Component\Plugin\DerivativeInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase extends \Drupal\Component\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait
    • class \Drupal\Core\ImageToolkit\ImageToolkitOperationBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\Core\ImageToolkit\ImageToolkitOperationInterface
      • class \Drupal\system\Plugin\ImageToolkit\Operation\gd\GDImageToolkitOperationBase extends \Drupal\Core\ImageToolkit\ImageToolkitOperationBase
        • class \Drupal\system\Plugin\ImageToolkit\Operation\gd\Desaturate extends \Drupal\system\Plugin\ImageToolkit\Operation\gd\GDImageToolkitOperationBase

Expanded class hierarchy of Desaturate

File

core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Desaturate.php, line 16

Namespace

class Desaturate extends GDImageToolkitOperationBase {
    
    /**
     * {@inheritdoc}
     */
    protected function arguments() {
        // This operation does not use any parameters.
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    protected function execute(array $arguments) {
        // PHP installations using non-bundled GD do not have imagefilter.
        if (!function_exists('imagefilter')) {
            $this->logger
                ->notice("The image '@file' could not be desaturated because the imagefilter() function is not available in this PHP installation.", [
                '@file' => $this->getToolkit()
                    ->getSource(),
            ]);
            return FALSE;
        }
        return imagefilter($this->getToolkit()
            ->getResource(), IMG_FILTER_GRAYSCALE);
    }

}

Members