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class CreateNew in Drupal 9

Same name and namespace in other branches
  1. 8 core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew

Defines GD2 create_new image operation.

Plugin annotation


@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.")
)

Hierarchy

Expanded class hierarchy of CreateNew

File

core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php, line 18

Namespace

Drupal\system\Plugin\ImageToolkit\Operation\gd
View source 
class CreateNew extends GDImageToolkitOperationBase {

  /**
   * {@inheritdoc}
   */
  protected function arguments() {
    return [
      'width' => [
        'description' => 'The width of the image, in pixels',
      ],
      'height' => [
        'description' => 'The height of the image, in pixels',
      ],
      'extension' => [
        'description' => 'The extension of the image file (e.g. png, gif, etc.)',
        'required' => FALSE,
        'default' => 'png',
      ],
      'transparent_color' => [
        'description' => 'The RGB hex color for GIF transparency',
        'required' => FALSE,
        'default' => '#ffffff',
      ],
      'is_temp' => [
        '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 'create_new' 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 ($type) {
      case IMAGETYPE_PNG:
      case IMAGETYPE_WEBP:
        imagealphablending($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;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
CreateNew::arguments protected function Returns the definition of the operation arguments. Overrides ImageToolkitOperationBase::arguments
CreateNew::execute protected function Performs the actual manipulation on the image. Overrides ImageToolkitOperationBase::execute
CreateNew::validateArguments protected function Validates the arguments. Overrides ImageToolkitOperationBase::validateArguments
DependencySerializationTrait::$_entityStorages protected property
DependencySerializationTrait::$_serviceIds protected property
DependencySerializationTrait::__sleep public function 2
DependencySerializationTrait::__wakeup public function 2
GDImageToolkitOperationBase::getToolkit protected function The correctly typed image toolkit for GD operations. Overrides ImageToolkitOperationBase::getToolkit
ImageToolkitOperationBase::$logger protected property A logger instance.
ImageToolkitOperationBase::$toolkit protected property The image toolkit.
ImageToolkitOperationBase::apply final public function Applies a toolkit specific operation to an image. Overrides ImageToolkitOperationInterface::apply
ImageToolkitOperationBase::prepareArguments protected function Checks if required arguments are passed in and adds defaults for non passed in optional arguments.
ImageToolkitOperationBase::__construct public function Constructs an image toolkit operation plugin. Overrides PluginBase::__construct
MessengerTrait::$messenger protected property The messenger. 27
MessengerTrait::messenger public function Gets the messenger. 27
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 2
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
StringTranslationTrait::$stringTranslation protected property The string translation service. 4
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.