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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew. | |
| */ | |
| namespace Drupal\system\Plugin\ImageToolkit\Operation\gd; | |
| use Drupal\Component\Utility\Color; | |
| /** | |
| * Defines GD2 create_new image operation. | |
| * | |
| * @ImageToolkitOperation( | |
| * id = "gd_create_new", | |
| * toolkit = "gd", | |
| * operation = "create_new", | |
| * label = @Translation("Set a new image"), | |
| * description = @Translation("Creates a new transparent resource and sets it for the image.") | |
| * ) | |
| */ | |
| class CreateNew extends GDImageToolkitOperationBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function arguments() { | |
| return array( | |
| 'width' => array( | |
| 'description' => 'The width of the image, in pixels', | |
| ), | |
| 'height' => array( | |
| 'description' => 'The height of the image, in pixels', | |
| ), | |
| 'extension' => array( | |
| 'description' => 'The extension of the image file (e.g. png, gif, etc.)', | |
| 'required' => FALSE, | |
| 'default' => 'png', | |
| ), | |
| 'transparent_color' => array( | |
| 'description' => 'The RGB hex color for GIF transparency', | |
| 'required' => FALSE, | |
| 'default' => '#ffffff', | |
| ), | |
| 'is_temp' => array( | |
| 'description' => 'If TRUE, this operation is being used to create a temporary image by another GD operation. After performing its function, the caller is responsible for destroying the original GD resource.', | |
| 'required' => FALSE, | |
| 'default' => FALSE, | |
| ), | |
| ); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function validateArguments(array $arguments) { | |
| // Assure extension is supported. | |
| if (!in_array($arguments['extension'], $this->getToolkit()->getSupportedExtensions())) { | |
| throw new \InvalidArgumentException("Invalid extension ('{$arguments['extension']}') specified for the image 'convert' operation"); | |
| } | |
| // Assure integers for width and height. | |
| $arguments['width'] = (int) round($arguments['width']); | |
| $arguments['height'] = (int) round($arguments['height']); | |
| // Fail when width or height are 0 or negative. | |
| if ($arguments['width'] <= 0) { | |
| throw new \InvalidArgumentException("Invalid width ('{$arguments['width']}') specified for the image 'create_new' operation"); | |
| } | |
| if ($arguments['height'] <= 0) { | |
| throw new \InvalidArgumentException("Invalid height ({$arguments['height']}) specified for the image 'create_new' operation"); | |
| } | |
| // Assure transparent color is a valid hex string. | |
| if ($arguments['transparent_color'] && !Color::validateHex($arguments['transparent_color'])) { | |
| throw new \InvalidArgumentException("Invalid transparent color ({$arguments['transparent_color']}) specified for the image 'create_new' operation"); | |
| } | |
| return $arguments; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function execute(array $arguments) { | |
| // Get the image type. | |
| $type = $this->getToolkit()->extensionToImageType($arguments['extension']); | |
| // Store the original GD resource. | |
| $original_res = $this->getToolkit()->getResource(); | |
| // Create the resource. | |
| if (!$res = imagecreatetruecolor($arguments['width'], $arguments['height'])) { | |
| return FALSE; | |
| } | |
| // Fill the resource with transparency as possible. | |
| switch ($type) { | |
| case IMAGETYPE_PNG: | |
| imagealphablending($res, FALSE); | |
| $transparency = imagecolorallocatealpha($res, 0, 0, 0, 127); | |
| imagefill($res, 0, 0, $transparency); | |
| imagealphablending($res, TRUE); | |
| imagesavealpha($res, TRUE); | |
| break; | |
| case IMAGETYPE_GIF: | |
| if (empty($arguments['transparent_color'])) { | |
| // No transparency color specified, fill white transparent. | |
| $fill_color = imagecolorallocatealpha($res, 255, 255, 255, 127); | |
| } | |
| else { | |
| $fill_rgb = Color::hexToRgb($arguments['transparent_color']); | |
| $fill_color = imagecolorallocatealpha($res, $fill_rgb['red'], $fill_rgb['green'], $fill_rgb['blue'], 127); | |
| imagecolortransparent($res, $fill_color); | |
| } | |
| imagefill($res, 0, 0, $fill_color); | |
| break; | |
| case IMAGETYPE_JPEG: | |
| imagefill($res, 0, 0, imagecolorallocate($res, 255, 255, 255)); | |
| break; | |
| } | |
| // Update the toolkit properties. | |
| $this->getToolkit()->setType($type); | |
| $this->getToolkit()->setResource($res); | |
| // Destroy the original resource if it is not needed by other operations. | |
| if (!$arguments['is_temp'] && is_resource($original_res)) { | |
| imagedestroy($original_res); | |
| } | |
| return TRUE; | |
| } | |
| } |