Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\image\Plugin\ImageEffect;
Chris@0: 
Chris@0: use Drupal\Component\Utility\Image;
Chris@0: use Drupal\Core\Form\FormStateInterface;
Chris@0: use Drupal\Core\Image\ImageInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Scales an image resource.
Chris@0:  *
Chris@0:  * @ImageEffect(
Chris@0:  *   id = "image_scale",
Chris@0:  *   label = @Translation("Scale"),
Chris@0:  *   description = @Translation("Scaling will maintain the aspect-ratio of the original image. If only a single dimension is specified, the other dimension will be calculated.")
Chris@0:  * )
Chris@0:  */
Chris@0: class ScaleImageEffect extends ResizeImageEffect {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function applyEffect(ImageInterface $image) {
Chris@0:     if (!$image->scale($this->configuration['width'], $this->configuration['height'], $this->configuration['upscale'])) {
Chris@0:       $this->logger->error('Image scale failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', ['%toolkit' => $image->getToolkitId(), '%path' => $image->getSource(), '%mimetype' => $image->getMimeType(), '%dimensions' => $image->getWidth() . 'x' . $image->getHeight()]);
Chris@0:       return FALSE;
Chris@0:     }
Chris@0:     return TRUE;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function transformDimensions(array &$dimensions, $uri) {
Chris@0:     if ($dimensions['width'] && $dimensions['height']) {
Chris@0:       Image::scaleDimensions($dimensions, $this->configuration['width'], $this->configuration['height'], $this->configuration['upscale']);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getSummary() {
Chris@0:     $summary = [
Chris@0:       '#theme' => 'image_scale_summary',
Chris@0:       '#data' => $this->configuration,
Chris@0:     ];
Chris@0:     $summary += parent::getSummary();
Chris@0: 
Chris@0:     return $summary;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function defaultConfiguration() {
Chris@0:     return parent::defaultConfiguration() + [
Chris@0:       'upscale' => FALSE,
Chris@0:     ];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
Chris@0:     $form = parent::buildConfigurationForm($form, $form_state);
Chris@0:     $form['width']['#required'] = FALSE;
Chris@0:     $form['height']['#required'] = FALSE;
Chris@0:     $form['upscale'] = [
Chris@0:       '#type' => 'checkbox',
Chris@0:       '#default_value' => $this->configuration['upscale'],
Chris@0:       '#title' => t('Allow Upscaling'),
Chris@0:       '#description' => t('Let scale make images larger than their original size.'),
Chris@0:     ];
Chris@0:     return $form;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
Chris@0:     parent::validateConfigurationForm($form, $form_state);
Chris@0:     if ($form_state->isValueEmpty('width') && $form_state->isValueEmpty('height')) {
Chris@0:       $form_state->setErrorByName('data', $this->t('Width and height can not both be blank.'));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
Chris@0:     parent::submitConfigurationForm($form, $form_state);
Chris@0: 
Chris@0:     $this->configuration['upscale'] = $form_state->getValue('upscale');
Chris@0:   }
Chris@0: 
Chris@0: }