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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\system\Plugin\ImageToolkit\Operation\gd\Crop. | |
| */ | |
| namespace Drupal\system\Plugin\ImageToolkit\Operation\gd; | |
| /** | |
| * Defines GD2 Crop operation. | |
| * | |
| * @ImageToolkitOperation( | |
| * id = "gd_crop", | |
| * toolkit = "gd", | |
| * operation = "crop", | |
| * label = @Translation("Crop"), | |
| * description = @Translation("Crops an image to a rectangle specified by the given dimensions.") | |
| * ) | |
| */ | |
| class Crop extends GDImageToolkitOperationBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function arguments() { | |
| return array( | |
| 'x' => array( | |
| 'description' => 'The starting x offset at which to start the crop, in pixels', | |
| ), | |
| 'y' => array( | |
| 'description' => 'The starting y offset at which to start the crop, in pixels', | |
| ), | |
| 'width' => array( | |
| 'description' => 'The width of the cropped area, in pixels', | |
| 'required' => FALSE, | |
| 'default' => NULL, | |
| ), | |
| 'height' => array( | |
| 'description' => 'The height of the cropped area, in pixels', | |
| 'required' => FALSE, | |
| 'default' => NULL, | |
| ), | |
| ); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function validateArguments(array $arguments) { | |
| // Assure at least one dimension. | |
| if (empty($arguments['width']) && empty($arguments['height'])) { | |
| throw new \InvalidArgumentException("At least one dimension ('width' or 'height') must be provided to the image 'crop' operation"); | |
| } | |
| // Preserve aspect. | |
| $aspect = $this->getToolkit()->getHeight() / $this->getToolkit()->getWidth(); | |
| $arguments['height'] = empty($arguments['height']) ? $arguments['width'] * $aspect : $arguments['height']; | |
| $arguments['width'] = empty($arguments['width']) ? $arguments['height'] / $aspect : $arguments['width']; | |
| // Assure integers for all arguments. | |
| foreach (array('x', 'y', 'width', 'height') as $key) { | |
| $arguments[$key] = (int) round($arguments[$key]); | |
| } | |
| // Fail when width or height are 0 or negative. | |
| if ($arguments['width'] <= 0) { | |
| throw new \InvalidArgumentException("Invalid width ('{$arguments['width']}') specified for the image 'crop' operation"); | |
| } | |
| if ($arguments['height'] <= 0) { | |
| throw new \InvalidArgumentException("Invalid height ('{$arguments['height']}') specified for the image 'crop' operation"); | |
| } | |
| return $arguments; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function execute(array $arguments) { | |
| // Create a new resource of the required dimensions, and copy and resize | |
| // the original resource on it with resampling. Destroy the original | |
| // resource upon success. | |
| $original_resource = $this->getToolkit()->getResource(); | |
| $data = array( | |
| 'width' => $arguments['width'], | |
| 'height' => $arguments['height'], | |
| 'extension' => image_type_to_extension($this->getToolkit()->getType(), FALSE), | |
| 'transparent_color' => $this->getToolkit()->getTransparentColor(), | |
| 'is_temp' => TRUE, | |
| ); | |
| if ($this->getToolkit()->apply('create_new', $data)) { | |
| if (imagecopyresampled($this->getToolkit()->getResource(), $original_resource, 0, 0, $arguments['x'], $arguments['y'], $arguments['width'], $arguments['height'], $arguments['width'], $arguments['height'])) { | |
| imagedestroy($original_resource); | |
| return TRUE; | |
| } | |
| else { | |
| // In case of failure, destroy the temporary resource and restore | |
| // the original one. | |
| imagedestroy($this->getToolkit()->getResource()); | |
| $this->getToolkit()->setResource($original_resource); | |
| } | |
| } | |
| return FALSE; | |
| } | |
| } |