openfed-8.x-8.5/modules/openfed_features/openfed_svg_file/openfed_svg_file.module

<?php

/**
 * @file
 * Contains openfed_svg_file.module.
 */
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function openfed_svg_file_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the svg_formatter module.
    case 'help.page.openfed_svg_file':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Add SVG field, widget, formatter.') . '</p>';
      return $output;
    default: return '';
  }
}

/**
 * Implements hook_theme().
 */
function openfed_svg_file_theme() {
  $theme = [];
  foreach (get_output_types() as $type => $label) {
    $theme += [
      'openfed_svg_file__' . $type => [
        'variables' => [
          'svg_data' => NULL,
          'attributes' => NULL,
          'alt_text' => NULL,
          'uri' => NULL,
        ],
      ],
    ];
  }

  return $theme;
}

/**
  * Pre-defined SVG output types.
  */
function get_output_types() {
  return [
    'image' => t('Image'),
    'embed' => t('Embed'),
    'object' => t('Object'),
    'iframe' => t('Iframe'),
    'inline' => t('Inline'),
  ];
}