elevatezoomplus.theme.inc in ElevateZoom Plus 7

Hooks and preprocess functions for the Blazy module.

File

elevatezoomplus.theme.inc

<?php

/**
 * @file
 * Hooks and preprocess functions for the Blazy module.
 */
use Drupal\blazy\Blazy;

/**
 * Returns HTML for a elevatezoomplus.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: The original theme elements.
 *   - settings: HTML related settings.
 *   - stage: The static main preview image if not using Slick with asNavFor.
 *
 * @ingroup themeable
 */
function theme_elevatezoomplus(array $variables) {
  extract($variables);

  // Only provides static stage if not using Slick asNavFor.
  $stage = empty($stage) ? '' : drupal_render($stage);

  // Appends and wraps the already-rendered #children.
  return '<div' . drupal_attributes($attributes_array) . '>' . $stage . $content . '</div>';
}

/**
 * Prepares variables for theme_elevatezoomplus().
 */
function template_preprocess_elevatezoomplus(array &$variables) {

  // Supported themes: Blazy (field|item_list), slick_wrapper, gridstack.
  $element = $variables['element'];
  $variables['settings'] = [];
  foreach ([
    'blazy',
    'build',
    'context',
    'settings',
  ] as $key) {
    if (isset($element['#' . $key])) {
      $settings = isset($element['#' . $key]['settings']) ? $element['#' . $key]['settings'] : [];
      $variables['settings'] = $key == 'build' || $key == 'context' ? $settings : $element['#' . $key];
      break;
    }
  }

  // Reset theme attributes as we are a wrapper/ container here.
  $settings = $variables['settings'];
  $json = elevatezoomplus()
    ->getOptions($settings);
  $variables['attributes_array'] = isset($element['#container_attributes']) ? $element['#container_attributes'] : [];
  $variables['attributes_array']['data-elevatezoomplus'] = drupal_json_encode($json);
  $variables['attributes_array']['class'][] = 'elevatezoomplus-wrapper';

  // Checks if we have Slick asNavFor, or regular Slick, Blazy Grid, etc.
  // Only provides static stage if not using Slick asNavFor.
  $variables['stage'] = empty($settings['nav']) ? elevatezoomplus_build($settings) : [];
  $variables['content'] = isset($element['#children']) ? $element['#children'] : [];
}

/**
 * Build the main gallery image/ stage, if not using Slick asNavFor.
 *
 * @todo remove first_item for _item post blazy:2.x.
 */
function elevatezoomplus_build(array $settings = []) {
  $uri = isset($settings['_uri']) ? $settings['_uri'] : (isset($settings['first_uri']) ? $settings['first_uri'] : '');
  $item = isset($settings['first_item']) ? $settings['first_item'] : new \stdClass();
  $item = isset($settings['_item']) ? $settings['_item'] : $item;
  $url = empty($settings['box_style']) ? file_create_url($uri) : image_style_url($settings['box_style'], $uri);
  $style = empty($settings['thumbnail_style']) ? '' : $settings['thumbnail_style'];
  $param = [
    'image_style' => $style,
    'lazy' => 'blazy',
    'uri' => $uri,
  ];
  $id = Blazy::getHtmlId('elevatezoomplus');
  $zoom = [
    'data-zoom-image' => $url,
  ];
  $attrs = [
    'class' => [
      'elevatezoomplus elevatezoomplus--stage',
    ],
    'id' => $id,
  ] + $zoom;
  $build = [
    'item' => $item,
    'settings' => $param,
    'item_attributes' => $attrs,
  ];
  $stage = blazy()
    ->getBlazy($build);
  $stage['#attached'] = blazy()
    ->attach($param + $settings);
  $attrs = [
    'class' => [
      'elevatezoomplus-stage blazy',
    ],
    'data-blazy' => '',
  ];
  return Blazy::container($stage, $attrs);
}

Functions

Name	Description
elevatezoomplus_build	Build the main gallery image/ stage, if not using Slick asNavFor.
template_preprocess_elevatezoomplus	Prepares variables for theme_elevatezoomplus().
theme_elevatezoomplus	Returns HTML for a elevatezoomplus.