printfriendly.module in PrintFriendly & PDF 8.3

Adds PrintFriendly button to chosen node types and provides a block.

File

printfriendly.module

<?php

/**
 * @file
 * Adds PrintFriendly button to chosen node types and provides a block.
 */
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\node\NodeInterface;
use Drupal\Core\Render\Markup;

/**
 * Implements hook_help().
 */
function printfriendly_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    // Main module help for the block module.
    case 'help.page.printfriendly':
      return '<p>' . t('PrintFriendly module lets you include a link to let your site users to quickly print, email or download the page as a PDF file using printfriendly service. <a href="http://www.printfriendly.com">PrintFriendly.com</a>') . '</p>';
  }
}

/**
 *
 */
function printfriendly_upgrade_db() {
  $config = \Drupal::configFactory()
    ->getEditable('printfriendly.settings');
  $db_version = $config
    ->get('db_version');
  if ($db_version == NULL) {
    $db_version = 0;
  }
  if ($db_version < 1) {
    switch ($config
      ->get('printfriendly_image')) {
      case 'button-print-blu20.png':
      case 'button-print-whgn20.png':
        $config
          ->set('printfriendly_image', 'print-button-nobg.png');
        break;
      case 'button-print-grnw20.png':
        $config
          ->set('printfriendly_image', 'print-button.png');
        break;
      case 'button-print-gry20.png':
        $config
          ->set('printfriendly_image', 'print-button-gray.png');
        break;
      case 'button-print-blu20.png':
        $config
          ->set('printfriendly_image', 'print-button-nobg.png');
        break;
      case 'pf-button-big.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-button-lg.png');
        break;
      case 'pf-button-big.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-button-lg.png');
        break;
      case 'pf-button-both.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-pdf-button.png');
        break;
      case 'pf-button.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-button.png');
        break;
      case 'pf-icon-small.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-icon-sm.png');
        break;
      case 'pf-icon.gif':
        $config
          ->set('printfriendly_image', 'printfriendly-icon-md.png');
        break;
      case 'pf-pdf-icon.gif':
        $config
          ->set('printfriendly_image', 'pdf-icon-md.png');
        break;
      case 'pf_button_sq_grn_m.png':
      case 'pf_button_sq_gry_m.png':
        $config
          ->set('printfriendly_image', 'printfriendly-icon-lg.png');
        break;
      default:
        $config
          ->set('printfriendly_image', 'printfriendly-button.png');
    }
  }
  $config
    ->set('db_version', 1);
  $config
    ->save();
}

/**
 * Attach PrintFriendly Script.
 */
function printfriendly_page_attachments(array &$page) {
  printfriendly_upgrade_db();
  $config = \Drupal::config('printfriendly.settings');

  // Attach JS custom settings.
  $custom_js = "var pfHeaderImgUrl = '" . $config
    ->get('printfriendly_page_custom_header') . "';";
  $custom_js .= "var pfHeaderTagline = '" . $config
    ->get('printfriendly_tagline') . "';";
  $custom_js .= "var pfdisableClickToDel  = " . $config
    ->get('printfriendly_click_delete') . ";";
  $custom_js .= "var pfHideImages = " . $config
    ->get('printfriendly_images') . ";";
  $custom_js .= "var pfImageDisplayStyle = '" . $config
    ->get('printfriendly_image_style') . "';";
  $custom_js .= "var pfDisablePDF = " . $config
    ->get('printfriendly_pdf') . ";";
  $custom_js .= "var pfDisableEmail = " . $config
    ->get('printfriendly_email') . ";";
  $custom_js .= "var pfDisablePrint = " . $config
    ->get('printfriendly_print') . ";";
  $custom_js .= "var pfCustomCSS = '" . $config
    ->get('printfriendly_custom_css') . "';";
  $custom_js .= "var pfPlatform = 'Drupal 8';";

  // Use schema less URLs to load all PF Assets.
  $js = '//cdn.printfriendly.com/printfriendly.js';
  $custom_js .= "(function(){var js, pf;pf = document.createElement('script');pf.type = 'text/javascript';";
  $custom_js .= "pf.src='" . $js . "';document.getElementsByTagName('head')[0].appendChild(pf)})();";
  $page['#attached']['html_head'][] = [
    [
      '#tag' => 'script',
      '#value' => $custom_js,
    ],
    'declare_printfriendly_inline',
  ];

  // Attach CSS.
  $page['#attached']['library'][] = 'printfriendly/printfriendly-libraries';
}

/**
 *
 */
function printfriendly_node_view(array &$build, NodeInterface $node, EntityViewDisplayInterface $display, $view_mode) {
  $config = \Drupal::config('printfriendly.settings');
  $config_display = $config
    ->get('printfriendly_display', array(
    'full',
  ));
  if (!is_array($config_display)) {
    $config_display = [];
  }
  if (in_array($node
    ->getType(), array_filter($config_display)) && \Drupal::currentUser()
    ->hasPermission('access printfriendly')) {
    if ($view_mode == 'teaser' && in_array($view_mode, array_filter($config_display))) {
      $block = printfriendly_create_button('/node/' . $node
        ->id(), FALSE);
      $build['printfriendly'] = [
        '#markup' => $block['#markup'],
        '#attributes' => [
          'class' => [
            'links',
            'inline',
            'printfriendly-node',
            $node
              ->getType(),
          ],
        ],
      ];
    }
    elseif ($view_mode != 'teaser') {
      $block = printfriendly_create_button();
      $build['printfriendly'] = [
        '#markup' => $block['#markup'],
        '#attributes' => [
          'class' => [
            'links',
            'inline',
            'printfriendly-node',
            $node
              ->getType(),
          ],
        ],
      ];
    }
  }
}

/**
 * Call printfriendly_create_button()
 */
function printfriendly_create_button($url = NULL, $popup = TRUE) {
  global $base_url;
  $config = \Drupal::config('printfriendly.settings');
  $current_path = \Drupal::service('path.current')
    ->getPath();
  $query_string = \Drupal::request()->query
    ->all();
  if (!$url) {
    $url = Url::fromURI($base_url . $current_path, [
      'query' => $query_string,
    ]);
    $full_path = $url
      ->toString();
  }
  else {
    $url = Url::fromURI($base_url . $url, [
      'query' => $query_string,
    ]);
    $full_path = $url
      ->toString();
  }
  if ($config
    ->get('printfriendly_image') == 'custom-button-img-url') {
    $image = $config
      ->get('custom_button_img_url', '');
  }
  else {
    $image_name = $config
      ->get('printfriendly_image', 'print-button.png');
    if (strpos($image_name, 'button') !== FALSE) {
      $folder = 'buttons';
    }
    else {
      $folder = 'icons';
    }
    $image = '//cdn.printfriendly.com/' . $folder . '/' . $image_name;
  }
  if ($popup) {
    return [
      '#type' => 'link',
      '#markup' => Markup::create('<a href="https://www.printfriendly.com/print?url=' . $full_path . '" class="printfriendly" onclick="window.print(); return false;" title="Printer Friendly, PDF & Email"><img src="' . $image . '" alt="Printer Friendly, PDF & Email" /></a>'),
    ];
  }
  else {
    return [
      '#markup' => Markup::create('<a href="https://www.printfriendly.com/print?url=' . $full_path . '" class="printfriendly" title="Printer Friendly, PDF & Email"><img src="' . $image . '" alt="Printer Friendly, PDF & Email" /></a>'),
    ];
  }
}

Functions

Name	Description
printfriendly_create_button	Call printfriendly_create_button()
printfriendly_help	Implements hook_help().
printfriendly_node_view
printfriendly_page_attachments	Attach PrintFriendly Script.
printfriendly_upgrade_db