printfriendly.module in PrintFriendly & PDF 7.4

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.
 */

/**
 * Implements hook_help().
 */
function printfriendly_help($path) {
  switch ($path) {
    case 'admin/config/services/printfriendly':
    case 'admin/help#printfriendly':
      return 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.', array(
        '!printfriendly' => '<a href="http://www.printfriendly.com">PrintFriendly.com</a>',
      ));
  }
}
function printfriendly_upgrade_db() {
  $db_version = variable_get('db_version');
  if ($db_version == NULL) {
    $db_version = 0;
  }
  if ($db_version < 1) {
    switch (variable_get('printfriendly_image')) {
      case 'button-print-blu20.png':
      case 'button-print-whgn20.png':
        variable_set('printfriendly_image', 'print-button-nobg.png');
        break;
      case 'button-print-grnw20.png':
        variable_set('printfriendly_image', 'print-button.png');
        break;
      case 'button-print-gry20.png':
        variable_set('printfriendly_image', 'print-button-gray.png');
        break;
      case 'button-print-blu20.png':
        variable_set('printfriendly_image', 'print-button-nobg.png');
        break;
      case 'pf-button-big.gif':
        variable_set('printfriendly_image', 'printfriendly-button-lg.png');
        break;
      case 'pf-button-big.gif':
        variable_set('printfriendly_image', 'printfriendly-button-lg.png');
        break;
      case 'pf-button-both.gif':
        variable_set('printfriendly_image', 'printfriendly-pdf-button.png');
        break;
      case 'pf-button.gif':
        variable_set('printfriendly_image', 'printfriendly-button.png');
        break;
      case 'pf-icon-small.gif':
        variable_set('printfriendly_image', 'printfriendly-icon-sm.png');
        break;
      case 'pf-icon.gif':
        variable_set('printfriendly_image', 'printfriendly-icon-md.png');
        break;
      case 'pf-pdf-icon.gif':
        variable_set('printfriendly_image', 'pdf-icon-md.png');
        break;
      case 'pf_button_sq_grn_m.png':
      case 'pf_button_sq_gry_m.png':
        variable_set('printfriendly_image', 'printfriendly-icon-lg.png');
        break;
      default:
        variable_set('printfriendly_image', 'printfriendly-button.png');
    }
  }
  variable_set('db_version', 1);
}

/**
 * Implements hook_permission().
 */
function printfriendly_permission() {
  return array(
    'administer printfriendly' => array(
      'title' => t('Administer PrintFriendly'),
      'description' => t('Configure how PrintFriendly is used on the site.'),
    ),
    'access printfriendly' => array(
      'title' => t('Access PrintFriendly'),
      'description' => t('Users with this permission will be able to use and see PrintFriendly.'),
    ),
  );
}

/**
 * Implements hook_menu().
 */
function printfriendly_menu() {
  $items['admin/config/services/printfriendly'] = array(
    'title' => 'PrintFriendly',
    'description' => 'Provides the configuration options for how PrintFriendly operates on the site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'printfriendly_admin_settings',
    ),
    'access arguments' => array(
      'administer printfriendly',
    ),
    'file' => 'printfriendly.admin.inc',
  );
  return $items;
}

/**
 * Implements hook_block_info().
 */
function printfriendly_block_info() {
  $blocks['printfriendly'] = array(
    'info' => t('PrintFriendly Widget'),
    'cache' => DRUPAL_CACHE_GLOBAL,
  );
  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function printfriendly_block_view($delta = '') {
  $block = array();
  switch ($delta) {
    case 'printfriendly':
      $block['subject'] = t('PrintFriendly');
      $block['content'] = printfriendly_create_button();
      break;
  }
  return $block;
}

/**
 * Implements hook_node_view().
 */
function printfriendly_node_view($node, $view_mode) {
  if (in_array($view_mode, array_filter(variable_get('printfriendly_display', array(
    'full',
  ))))) {
    if (in_array($node->type, variable_get('printfriendly_types', array()), TRUE) && user_access('access printfriendly')) {
      if ($view_mode == 'teaser') {
        $block = printfriendly_create_button('node/' . $node->nid, FALSE);
      }
      else {
        $block = printfriendly_create_button();
        foreach ($block['#attached']['js'] as $key => $value) {
          drupal_add_js($key, $value);
        }
      }
      $links['printfriendly'] = array(
        'title' => $block['#markup'],
        'attributes' => array(
          'class' => array(
            'printfriendly-node',
            $node->type,
          ),
        ),
        'html' => TRUE,
      );
      $node->content['links']['printfriendly'] = array(
        '#theme' => 'links',
        '#links' => $links,
        '#attributes' => array(
          'class' => array(
            'links',
            'inline',
          ),
        ),
      );
    }
  }
}

/**
 * Register module with views api.
 */
function printfriendly_views_api() {
  return array(
    'api' => '3.0',
    'path' => drupal_get_path('module', 'printfriendly') . '/views',
  );
}

/**
 * Shared function generate code for printfriendly button for nodes and block.
 *
 * @param string $url
 *   Path to the page to pass to PrintFriendly.
 * @param bool $popup
 *   Whether the JavaScript should be added or not (popup).
 * @return string
 *   String containing html code for the button
 *
 */
function printfriendly_create_button($url = NULL, $popup = TRUE) {
  printfriendly_upgrade_db();
  if (!$url && !is_numeric($url)) {
    $url = $_GET['q'];
  }
  $query_string = $_GET;

  // Attach JS custom settings
  $custom_js = "var pfHeaderImgUrl = '" . variable_get('printfriendly_page_custom_header') . "';";
  $custom_js .= "var pfHeaderTagline = '" . variable_get('printfriendly_tagline') . "';";
  $custom_js .= "var pfdisableClickToDel  = '" . variable_get('printfriendly_click_delete') . "';";
  $custom_js .= "var pfHideImages = " . variable_get('printfriendly_images') . ";";
  $custom_js .= "var pfImageDisplayStyle = '" . variable_get('printfriendly_image_style') . "';";
  $custom_js .= "var pfDisablePDF = " . variable_get('printfriendly_pdf') . ";";
  $custom_js .= "var pfDisableEmail = " . variable_get('printfriendly_email') . ";";
  $custom_js .= "var pfDisablePrint = " . variable_get('printfriendly_print') . ";";
  $custom_js .= "var pfCustomCSS = '" . variable_get('printfriendly_custom_css') . "';";
  $custom_js .= "var pfPlatform = 'Drupal 7';";
  unset($query_string['q']);
  $url = url($url, array(
    'absolute' => TRUE,
    'query' => $query_string,
  ));

  // Use schema less URLs to load all PF Assets
  $js = '//cdn.printfriendly.com/printfriendly.js';
  if (variable_get('printfriendly_image') == 'custom-button-img-url') {
    $image = variable_get('custom_button_img_url', '');
  }
  else {
    $image_name = variable_get('printfriendly_image', 'button-print-grnw20.png');
    if (strpos($image_name, 'button') !== FALSE) {
      $folder = 'buttons';
    }
    else {
      $folder = 'icons';
    }
    $image = '//cdn.printfriendly.com/' . $folder . '/' . $image_name;
  }
  $link_content = theme('image', array(
    'path' => $image,
    'alt' => variable_get('printfriendly_description', t('Print Friendly, PDF & Email')),
  ));
  $options = array(
    'attributes' => array(
      'class' => 'printfriendly',
      'onclick' => 'window.print(); return false;',
      'title' => variable_get('printfriendly_description', t('Print Friendly, PDF & Email')),
    ),
    'html' => TRUE,
    'query' => array(
      'url' => $url,
    ),
    'external' => TRUE,
  );
  if ($popup) {
    return array(
      '#markup' => l($link_content, 'https://www.printfriendly.com/print', $options),
      '#attached' => array(
        'js' => array(
          $custom_js => array(
            'type' => 'inline',
            'scope' => 'footer',
          ),
          $js => array(
            'type' => 'external',
            'scope' => 'footer',
          ),
        ),
      ),
    );
  }
  else {
    unset($options['attributes']['onclick']);
    return array(
      '#markup' => l($link_content, 'https://www.printfriendly.com/print', $options),
    );
  }
}

Functions

Name	Description
printfriendly_block_info	Implements hook_block_info().
printfriendly_block_view	Implements hook_block_view().
printfriendly_create_button	Shared function generate code for printfriendly button for nodes and block.
printfriendly_help	Implements hook_help().
printfriendly_menu	Implements hook_menu().
printfriendly_node_view	Implements hook_node_view().
printfriendly_permission	Implements hook_permission().
printfriendly_upgrade_db
printfriendly_views_api	Register module with views api.