interface ImageEffectInterface in Drupal 8

Defines the interface for image effects.

Hierarchy

• interface \Drupal\Component\Plugin\PluginInspectionInterface; interface \Drupal\Component\Plugin\ConfigurableInterface; interface \Drupal\Component\Plugin\DependentPluginInterface; interface \Drupal\Component\Plugin\ConfigurablePluginInterface
  • interface \Drupal\image\ImageEffectInterface

See also

\Drupal\image\Annotation\ImageEffect

\Drupal\image\ImageEffectBase

\Drupal\image\ConfigurableImageEffectInterface

\Drupal\image\ConfigurableImageEffectBase

\Drupal\image\ImageEffectManager

Plugin API

1 file declares its use of ImageEffectInterface

ImageStyle.php in core/modules/image/src/Entity/ImageStyle.php

File

core/modules/image/src/ImageEffectInterface.php, line 21

Namespace

Drupal\image

interface ImageEffectInterface extends PluginInspectionInterface, ConfigurableInterface, DependentPluginInterface, ConfigurablePluginInterface {

  /**
   * Applies an image effect to the image object.
   *
   * @param \Drupal\Core\Image\ImageInterface $image
   *   An image file object.
   *
   * @return bool
   *   TRUE on success. FALSE if unable to perform the image effect on the image.
   */
  public function applyEffect(ImageInterface $image);

  /**
   * Determines the dimensions of the styled image.
   *
   * @param array &$dimensions
   *   Dimensions to be modified - an array with the following keys:
   *   - width: the width in pixels, or NULL if unknown
   *   - height: the height in pixels, or NULL if unknown
   *   When either of the dimensions are NULL, the corresponding HTML attribute
   *   will be omitted when an image style using this image effect is used.
   * @param string $uri
   *   Original image file URI. It is passed in to allow an effect to
   *   optionally use this information to retrieve additional image metadata
   *   to determine dimensions of the styled image.
   *   ImageEffectInterface::transformDimensions key objective is to calculate
   *   styled image dimensions without performing actual image operations, so
   *   be aware that performing IO on the URI may lead to decrease in
   *   performance.
   */
  public function transformDimensions(array &$dimensions, $uri);

  /**
   * Returns the extension of the derivative after applying this image effect.
   *
   * @param string $extension
   *   The file extension the derivative has before applying.
   *
   * @return string
   *   The file extension after applying.
   */
  public function getDerivativeExtension($extension);

  /**
   * Returns a render array summarizing the configuration of the image effect.
   *
   * @return array
   *   A render array.
   */
  public function getSummary();

  /**
   * Returns the image effect label.
   *
   * @return string
   *   The image effect label.
   */
  public function label();

  /**
   * Returns the unique ID representing the image effect.
   *
   * @return string
   *   The image effect ID.
   */
  public function getUuid();

  /**
   * Returns the weight of the image effect.
   *
   * @return int|string
   *   Either the integer weight of the image effect, or an empty string.
   */
  public function getWeight();

  /**
   * Sets the weight for this image effect.
   *
   * @param int $weight
   *   The weight for this image effect.
   *
   * @return $this
   */
  public function setWeight($weight);

}

Members

Name	Modifiers	Type	Description	Overrides
ConfigurableInterface::defaultConfiguration	public	function	Gets default configuration for this plugin.	11
ConfigurableInterface::getConfiguration	public	function	Gets this plugin's configuration.	12
ConfigurableInterface::setConfiguration	public	function	Sets the configuration for this plugin instance.	12
DependentPluginInterface::calculateDependencies	public	function	Calculates dependencies for the configured plugin.	19
ImageEffectInterface::applyEffect	public	function	Applies an image effect to the image object.	7
ImageEffectInterface::getDerivativeExtension	public	function	Returns the extension of the derivative after applying this image effect.	1
ImageEffectInterface::getSummary	public	function	Returns a render array summarizing the configuration of the image effect.	1
ImageEffectInterface::getUuid	public	function	Returns the unique ID representing the image effect.	1
ImageEffectInterface::getWeight	public	function	Returns the weight of the image effect.	1
ImageEffectInterface::label	public	function	Returns the image effect label.	1
ImageEffectInterface::setWeight	public	function	Sets the weight for this image effect.	1
ImageEffectInterface::transformDimensions	public	function	Determines the dimensions of the styled image.	1
PluginInspectionInterface::getPluginDefinition	public	function	Gets the definition of the plugin implementation.	4
PluginInspectionInterface::getPluginId	public	function	Gets the plugin_id of the plugin instance.	2