class ResizeImageEffect in Drupal 9

Resizes an image resource.

Plugin annotation

@ImageEffect(
  id = "image_resize",
  label = @Translation("Resize"),
  description = @Translation("Resizing will make images an exact set of dimensions. This may cause images to be stretched or shrunk disproportionately.")
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\image\ImageEffectBase implements ContainerFactoryPluginInterface, ImageEffectInterface
      • class \Drupal\image\ConfigurableImageEffectBase implements ConfigurableImageEffectInterface
        • class \Drupal\image\Plugin\ImageEffect\ResizeImageEffect

File

core/modules/image/src/Plugin/ImageEffect/ResizeImageEffect.php, line 18

Namespace

Drupal\image\Plugin\ImageEffect

class ResizeImageEffect extends ConfigurableImageEffectBase {

  /**
   * {@inheritdoc}
   */
  public function applyEffect(ImageInterface $image) {
    if (!$image
      ->resize($this->configuration['width'], $this->configuration['height'])) {
      $this->logger
        ->error('Image resize failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', [
        '%toolkit' => $image
          ->getToolkitId(),
        '%path' => $image
          ->getSource(),
        '%mimetype' => $image
          ->getMimeType(),
        '%dimensions' => $image
          ->getWidth() . 'x' . $image
          ->getHeight(),
      ]);
      return FALSE;
    }
    return TRUE;
  }

  /**
   * {@inheritdoc}
   */
  public function transformDimensions(array &$dimensions, $uri) {

    // The new image will have the exact dimensions defined for the effect.
    $dimensions['width'] = $this->configuration['width'];
    $dimensions['height'] = $this->configuration['height'];
  }

  /**
   * {@inheritdoc}
   */
  public function getSummary() {
    $summary = [
      '#theme' => 'image_resize_summary',
      '#data' => $this->configuration,
    ];
    $summary += parent::getSummary();
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'width' => NULL,
      'height' => NULL,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    $form['width'] = [
      '#type' => 'number',
      '#title' => t('Width'),
      '#default_value' => $this->configuration['width'],
      '#field_suffix' => ' ' . t('pixels'),
      '#required' => TRUE,
      '#min' => 1,
    ];
    $form['height'] = [
      '#type' => 'number',
      '#title' => t('Height'),
      '#default_value' => $this->configuration['height'],
      '#field_suffix' => ' ' . t('pixels'),
      '#required' => TRUE,
      '#min' => 1,
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    parent::submitConfigurationForm($form, $form_state);
    $this->configuration['height'] = $form_state
      ->getValue('height');
    $this->configuration['width'] = $form_state
      ->getValue('width');
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ConfigurableImageEffectBase::validateConfigurationForm	public	function	Form validation handler. Overrides PluginFormInterface::validateConfigurationForm	2
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
ImageEffectBase::$logger	protected	property	A logger instance.
ImageEffectBase::$uuid	protected	property	The image effect ID.
ImageEffectBase::$weight	protected	property	The weight of the image effect.
ImageEffectBase::calculateDependencies	public	function	Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies
ImageEffectBase::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
ImageEffectBase::getConfiguration	public	function	Gets this plugin's configuration. Overrides ConfigurableInterface::getConfiguration
ImageEffectBase::getDerivativeExtension	public	function	Returns the extension of the derivative after applying this image effect. Overrides ImageEffectInterface::getDerivativeExtension	1
ImageEffectBase::getUuid	public	function	Returns the unique ID representing the image effect. Overrides ImageEffectInterface::getUuid
ImageEffectBase::getWeight	public	function	Returns the weight of the image effect. Overrides ImageEffectInterface::getWeight
ImageEffectBase::label	public	function	Returns the image effect label. Overrides ImageEffectInterface::label
ImageEffectBase::setConfiguration	public	function	Sets the configuration for this plugin instance. Overrides ConfigurableInterface::setConfiguration
ImageEffectBase::setWeight	public	function	Sets the weight for this image effect. Overrides ImageEffectInterface::setWeight
ImageEffectBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides PluginBase::__construct
MessengerTrait::$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::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	2
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
ResizeImageEffect::applyEffect	public	function	Applies an image effect to the image object. Overrides ImageEffectInterface::applyEffect	2
ResizeImageEffect::buildConfigurationForm	public	function	Form constructor. Overrides PluginFormInterface::buildConfigurationForm	2
ResizeImageEffect::defaultConfiguration	public	function	Gets default configuration for this plugin. Overrides ImageEffectBase::defaultConfiguration	2
ResizeImageEffect::getSummary	public	function	Returns a render array summarizing the configuration of the image effect. Overrides ImageEffectBase::getSummary	2
ResizeImageEffect::submitConfigurationForm	public	function	Form submission handler. Overrides ConfigurableImageEffectBase::submitConfigurationForm	2
ResizeImageEffect::transformDimensions	public	function	Determines the dimensions of the styled image. Overrides ImageEffectBase::transformDimensions	1
StringTranslationTrait::$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.