sharp/sharp.theme at master · CNDexter/sharp · GitHub

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<?php
/**
 * @file
 * Functions to support theming in the sharp theme.
 */

/**
 * Implements template_preprocess_HOOK() for the HTML template.
 */
function sharp_preprocess_html(&$variables) {

  // Add x-ua-compatibility tags.
  $x_ua_compatible = [
    '#tag' => 'meta',
    '#attributes' => [
      'http-equiv' => 'x-ua-compatible',
      'content' => 'ie=11',
    ],
  ];
  $variables['page']['#attached']['html_head'][] = [$x_ua_compatible, 'x-ua-compatible'];

  // Add node id as a class.
  $request = \Drupal::request();
  $node = ($request->attributes->get('_route') == 'entity.node.canonical'
            ? $request->attributes->get('node')
            : NULL
          );

  if ($node) {
    $variables['attributes']['class'][] = 'page-node-' . $node->id();
  }

  // Add information about the number of sidebars.
  $has_left_sidebar = !empty($variables['page']['sidebar_left']);
  $has_right_sidebar = !empty($variables['page']['sidebar_right']);

  if ($has_left_sidebar && $has_right_sidebar) {
    $variables['attributes']['class'][] = 'layout-sidebar-left';
    $variables['attributes']['class'][] = 'layout-sidebar-right';
    $variables['attributes']['class'][] = 'layout-two-sidebars';
  }
  elseif ($has_left_sidebar) {
    $variables['attributes']['class'][] = 'layout-one-sidebar';
    $variables['attributes']['class'][] = 'layout-sidebar-left';
  }
  elseif ($has_right_sidebar) {
    $variables['attributes']['class'][] = 'layout-one-sidebar';
    $variables['attributes']['class'][] = 'layout-sidebar-right';
  }
  else {
    $variables['attributes']['class'][] = 'layout-no-sidebars';
  }
}