public ImageEffectInterface::label()

template_preprocess_image_style_preview(&$variables) Prepares variables for image style preview templates

public ImageStyleEditForm::effectSave($form, FormStateInterface

Defines a class to build a listing of image style entities. Hierarchy class \Drupal\Core\Entity\

public ImageEffectBase::transformDimensions(array &$dimensions

Default theme implementation for a summary of an image scale effect. Available variables: data:

public Image::createNew($width, $height, $extension = 'png', $transparent_color = '#ffffff')

public Image::rotate($degrees, $background = NULL) Rotates

protected ImageStyle::fileDefaultScheme()

public ImageInterface::save($destination = NULL)