Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\image\Plugin\ImageEffect;
Chris@0: 
Chris@0: use Drupal\Component\Utility\Color;
Chris@0: use Drupal\Component\Utility\Rectangle;
Chris@0: use Drupal\Core\Form\FormStateInterface;
Chris@0: use Drupal\Core\Image\ImageInterface;
Chris@0: use Drupal\image\ConfigurableImageEffectBase;
Chris@0: 
Chris@0: /**
Chris@0:  * Rotates an image resource.
Chris@0:  *
Chris@0:  * @ImageEffect(
Chris@0:  *   id = "image_rotate",
Chris@0:  *   label = @Translation("Rotate"),
Chris@0:  *   description = @Translation("Rotating an image may cause the dimensions of an image to increase to fit the diagonal.")
Chris@0:  * )
Chris@0:  */
Chris@0: class RotateImageEffect extends ConfigurableImageEffectBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function applyEffect(ImageInterface $image) {
Chris@0:     if (!empty($this->configuration['random'])) {
Chris@0:       $degrees = abs((float) $this->configuration['degrees']);
Chris@0:       $this->configuration['degrees'] = rand(-$degrees, $degrees);
Chris@0:     }
Chris@0: 
Chris@0:     if (!$image->rotate($this->configuration['degrees'], $this->configuration['bgcolor'])) {
Chris@0:       $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' . $image->getHeight()]);
Chris@0:       return FALSE;
Chris@0:     }
Chris@0:     return TRUE;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function transformDimensions(array &$dimensions, $uri) {
Chris@0:     // If the rotate is not random and current dimensions are set,
Chris@0:     // then the new dimensions can be determined.
Chris@0:     if (!$this->configuration['random'] && $dimensions['width'] && $dimensions['height']) {
Chris@0:       $rect = new Rectangle($dimensions['width'], $dimensions['height']);
Chris@0:       $rect = $rect->rotate($this->configuration['degrees']);
Chris@0:       $dimensions['width'] = $rect->getBoundingWidth();
Chris@0:       $dimensions['height'] = $rect->getBoundingHeight();
Chris@0:     }
Chris@0:     else {
Chris@0:       $dimensions['width'] = $dimensions['height'] = NULL;
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_rotate_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 [
Chris@0:       'degrees' => 0,
Chris@0:       'bgcolor' => NULL,
Chris@0:       'random' => 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['degrees'] = [
Chris@0:       '#type' => 'number',
Chris@0:       '#default_value' => $this->configuration['degrees'],
Chris@0:       '#title' => t('Rotation angle'),
Chris@0:       '#description' => t('The number of degrees the image should be rotated. Positive numbers are clockwise, negative are counter-clockwise.'),
Chris@0:       '#field_suffix' => '°',
Chris@0:       '#required' => TRUE,
Chris@0:     ];
Chris@0:     $form['bgcolor'] = [
Chris@0:       '#type' => 'textfield',
Chris@0:       '#default_value' => $this->configuration['bgcolor'],
Chris@0:       '#title' => t('Background color'),
Chris@0:       '#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.'),
Chris@0:       '#size' => 7,
Chris@0:       '#maxlength' => 7,
Chris@0:     ];
Chris@0:     $form['random'] = [
Chris@0:       '#type' => 'checkbox',
Chris@0:       '#default_value' => $this->configuration['random'],
Chris@0:       '#title' => t('Randomize'),
Chris@0:       '#description' => t('Randomize the rotation angle for each image. The angle specified above is used as a maximum.'),
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 $form_state) {
Chris@0:     if (!$form_state->isValueEmpty('bgcolor') && !Color::validateHex($form_state->getValue('bgcolor'))) {
Chris@0:       $form_state->setErrorByName('bgcolor', $this->t('Background color must be a hexadecimal color value.'));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
Chris@0:     parent::submitConfigurationForm($form, $form_state);
Chris@0: 
Chris@0:     $this->configuration['degrees'] = $form_state->getValue('degrees');
Chris@0:     $this->configuration['bgcolor'] = $form_state->getValue('bgcolor');
Chris@0:     $this->configuration['random'] = $form_state->getValue('random');
Chris@0:   }
Chris@0: 
Chris@0: }