class RotateImageEffect in Drupal 8

Same name and namespace in other branches

9 core/modules/image/src/Plugin/ImageEffect/RotateImageEffect.php \Drupal\image\Plugin\ImageEffect\RotateImageEffect
10 core/modules/image/src/Plugin/ImageEffect/RotateImageEffect.php \Drupal\image\Plugin\ImageEffect\RotateImageEffect

Rotates an image resource.

Plugin annotation


@ImageEffect(
  id = "image_rotate",
  label = @Translation("Rotate"),
  description = @Translation("Rotating an image may cause the dimensions of an image to increase to fit the diagonal.")
)

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\RotateImageEffect

Expanded class hierarchy of RotateImageEffect

File

core/modules/image/src/Plugin/ImageEffect/RotateImageEffect.php, line 20

Namespace

Drupal\image\Plugin\ImageEffect

View source

class RotateImageEffect extends ConfigurableImageEffectBase {

  /**
   * {@inheritdoc}
   */
  public function applyEffect(ImageInterface $image) {
    if (!empty($this->configuration['random'])) {
      $degrees = abs((double) $this->configuration['degrees']);
      $this->configuration['degrees'] = rand(-$degrees, $degrees);
    }
    if (!$image
      ->rotate($this->configuration['degrees'], $this->configuration['bgcolor'])) {
      $this->logger
        ->error('Image rotate 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) {

    // If the rotate is not random and current dimensions are set,
    // then the new dimensions can be determined.
    if (!$this->configuration['random'] && $dimensions['width'] && $dimensions['height']) {
      $rect = new Rectangle($dimensions['width'], $dimensions['height']);
      $rect = $rect
        ->rotate($this->configuration['degrees']);
      $dimensions['width'] = $rect
        ->getBoundingWidth();
      $dimensions['height'] = $rect
        ->getBoundingHeight();
    }
    else {
      $dimensions['width'] = $dimensions['height'] = NULL;
    }
  }

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

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'degrees' => 0,
      'bgcolor' => NULL,
      'random' => FALSE,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    $form['degrees'] = [
      '#type' => 'number',
      '#default_value' => $this->configuration['degrees'],
      '#title' => t('Rotation angle'),
      '#description' => t('The number of degrees the image should be rotated. Positive numbers are clockwise, negative are counter-clockwise.'),
      '#field_suffix' => '°',
      '#required' => TRUE,
    ];
    $form['bgcolor'] = [
      '#type' => 'textfield',
      '#default_value' => $this->configuration['bgcolor'],
      '#title' => t('Background color'),
      '#description' => t('The background color to use for exposed areas of the image. Use web-style hex colors (#FFFFFF for white, #000000 for black). Leave blank for transparency on image types that support it.'),
      '#size' => 7,
      '#maxlength' => 7,
    ];
    $form['random'] = [
      '#type' => 'checkbox',
      '#default_value' => $this->configuration['random'],
      '#title' => t('Randomize'),
      '#description' => t('Randomize the rotation angle for each image. The angle specified above is used as a maximum.'),
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
    if (!$form_state
      ->isValueEmpty('bgcolor') && !Color::validateHex($form_state
      ->getValue('bgcolor'))) {
      $form_state
        ->setErrorByName('bgcolor', $this
        ->t('Background color must be a hexadecimal color value.'));
    }
  }

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

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
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.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
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::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
RotateImageEffect::applyEffect	public	function	Applies an image effect to the image object. Overrides ImageEffectInterface::applyEffect
RotateImageEffect::buildConfigurationForm	public	function	Form constructor. Overrides PluginFormInterface::buildConfigurationForm
RotateImageEffect::defaultConfiguration	public	function	Gets default configuration for this plugin. Overrides ImageEffectBase::defaultConfiguration
RotateImageEffect::getSummary	public	function	Returns a render array summarizing the configuration of the image effect. Overrides ImageEffectBase::getSummary
RotateImageEffect::submitConfigurationForm	public	function	Form submission handler. Overrides ConfigurableImageEffectBase::submitConfigurationForm
RotateImageEffect::transformDimensions	public	function	Determines the dimensions of the styled image. Overrides ImageEffectBase::transformDimensions
RotateImageEffect::validateConfigurationForm	public	function	Form validation handler. Overrides ConfigurableImageEffectBase::validateConfigurationForm
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
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.

You are here

class RotateImageEffect in Drupal 8

Plugin annotation

Hierarchy

File

Namespace

Members

API Navigation