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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\system\Plugin\ImageToolkit\Operation\gd\Desaturate. | |
| */ | |
| namespace Drupal\system\Plugin\ImageToolkit\Operation\gd; | |
| /** | |
| * Defines GD2 Desaturate operation. | |
| * | |
| * @ImageToolkitOperation( | |
| * id = "gd_desaturate", | |
| * toolkit = "gd", | |
| * operation = "desaturate", | |
| * label = @Translation("Desaturate"), | |
| * description = @Translation("Converts an image to grayscale.") | |
| * ) | |
| */ | |
| class Desaturate extends GDImageToolkitOperationBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function arguments() { | |
| // This operation does not use any parameters. | |
| return array(); | |
| } | |
| /** | |
| * {@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.", array('@file' => $this->getToolkit()->getSource())); | |
| return FALSE; | |
| } | |
| return imagefilter($this->getToolkit()->getResource(), IMG_FILTER_GRAYSCALE); | |
| } | |
| } |