pdf_reader.module in PDF Reader 7

Same filename and directory in other branches
pdf reader module file.
File

pdf_reader.module
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<?php

/**
 * @file
 * pdf reader module file.
 */

/**
 * Implements hook_permission().
 */
function pdf_reader_permission() {
  return array(
    'administer pdf reader' => array(
      'title' => t('Administer PDF Reader'),
      'description' => t('Perform maintenance tasks for PDF Reader'),
    ),
    'download pdf files' => array(
      'title' => t('Download PDF files'),
      'description' => t('Allow to download PDF files'),
    ),
  );
}

/**
 * Implement hook_field_formatter_info().
 */
function pdf_reader_field_formatter_info() {
  return array(
    'pdf_reader_file' => array(
      'label' => t('PDF Reader'),
      'field types' => array(
        'file',
        'text',
      ),
      'settings' => array(
        'pdf_width' => 600,
        'pdf_height' => 780,
        'renderer' => 'google',
        'download' => FALSE,
        'colorbox' => FALSE,
        'colorbox_link_text' => '',
      ),
    ),
  );
}

/**
 * Implements hook_field_formatter_settings_form().
 */
function pdf_reader_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
  $display = $instance['display'][$view_mode];
  $settings = $display['settings'];
  $element['pdf_width'] = array(
    '#title' => t('Width'),
    '#type' => 'textfield',
    '#default_value' => $settings['pdf_width'],
  );
  $element['pdf_height'] = array(
    '#title' => t('Height'),
    '#type' => 'textfield',
    '#default_value' => $settings['pdf_height'],
  );
  $element['renderer'] = array(
    '#title' => t('Renderer'),
    '#type' => 'select',
    '#options' => array(
      'google' => 'Google Viewer',
      'direct' => 'Direct Embed',
      'pdf-js' => 'pdf.js',
    ),
    '#default_value' => $settings['renderer'],
  );
  $element['download'] = array(
    '#title' => t('Show download link'),
    '#type' => 'checkbox',
    '#default_value' => $settings['download'],
  );
  if (module_exists('colorbox')) {
    variable_set('colorbox_inline', 1);
  }
  $element['colorbox'] = array(
    '#title' => t('Display in colorbox (colorbox module must be installed).'),
    '#type' => 'checkbox',
    '#disabled' => !module_exists('colorbox'),
    '#default_value' => $settings['colorbox'],
  );
  $element['colorbox_link_text'] = array(
    '#title' => t('Colorbox link'),
    '#type' => 'textfield',
    '#disabled' => !module_exists('colorbox'),
    '#default_value' => $settings['colorbox_link_text'],
  );
  return $element;
}

/**
 * Implements hook_field_formatter_settings_summary().
 */
function pdf_reader_field_formatter_settings_summary($field, $instance, $view_mode) {
  $renderers = array(
    'google' => 'Google Viewer',
    'direct' => 'Direct Embed',
    'pdf-js' => 'pdf.js',
  );
  $display = $instance['display'][$view_mode];
  $settings = $display['settings'];
  $summary = 'Size: ' . $settings['pdf_width'] . 'x' . $settings['pdf_height'] . ' Using: ' . $renderers[$settings['renderer']] . '<br> Download Link: ' . ($settings['download'] == 1 ? 'YES' : 'NO') . ' Use colorbox: ' . ($settings['colorbox'] == 1 ? 'YES' : 'NO') . ' Colorbox link text: ' . $settings['colorbox_link_text'];
  return $summary;
}

/**
 * Implements hook_field_formatter_view().
 */
function pdf_reader_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $settings = $display['settings'];
  $element = array();
  switch ($display['type']) {
    case 'pdf_reader_file':
      foreach ($items as $delta => $item) {
        $element[$delta]['#type'] = 'markup';
        $element[$delta]['#markup'] = theme('pdf_reader', array(
          'file' => $item,
          'settings' => $settings,
        ));
      }
      break;
  }
  return $element;
}

/**
 * Implements hook_theme().
 *
 * Use our theme function.
 */
function pdf_reader_theme($existing, $type, $theme, $path) {
  return array(
    'pdf_reader' => array(
      'variables' => array(
        'file' => NULL,
        'settings' => NULL,
      ),
    ),
    'pdf_js' => array(
      'template' => 'pdf_js',
      'path' => drupal_get_path('module', 'pdf_reader') . '/theme',
    ),
  );
}

/**
 * Theme the field with pdf reader
 */
function theme_pdf_reader($variables) {
  $file_url = isset($variables['file']['uri']) ? file_create_url($variables['file']['uri']) : $variables['file']['value'];
  switch ($variables['settings']['renderer']) {
    case 'google':
      $output = '<iframe id="pdf_reader" src="//docs.google.com/viewer?embedded=true&url=' . urlencode($file_url) . '" width="' . $variables['settings']['pdf_width'] . '" height="' . $variables['settings']['pdf_height'] . '" scrolling="no' . '" style="border: none;"></iframe>';
      break;
    case 'direct':
      $download_link = '';
      if (user_access('download pdf files')) {
        $download_link = t('or') . ' ' . l(t('click here to download the PDF file.'), $file_url);
      }
      $output = '<object id="pdf_reader" data="' . $file_url . '#view=Fit' . '" ' . 'type="application/pdf' . '" ' . 'width="' . $variables['settings']['pdf_width'] . '" ' . 'height="' . $variables['settings']['pdf_height'] . '">' . '<embed src="' . $file_url . '#view=Fit' . '"' . 'width="' . $variables['settings']['pdf_width'] . '" ' . 'height="' . $variables['settings']['pdf_height'] . '" ' . 'type="application/pdf">' . '<p>' . t('It appears your Web browser is not configured to display PDF files. ') . l(t('Download adobe Acrobat '), 'http://www.adobe.com/products/reader.html') . ' ' . $download_link . '</p>' . '</embed></object>';
      break;
    case 'pdf-js':
      _pdf_reader_load_pdf_js($file_url);
      $output = theme('pdf_js');
      break;
  }
  if ($variables['settings']['download'] == TRUE && user_access('download pdf files')) {
    $output .= l(t('Click here to download the PDF file.'), $file_url, array(
      'attributes' => array(
        'class' => 'pdf-reader-download-link',
      ),
    ));
  }
  if ($variables['settings']['colorbox'] == TRUE) {
    $html = $output;
    $options = array(
      'attributes' => array(
        'class' => array(
          'colorbox-inline',
          'show',
        ),
      ),
      'query' => array(
        'width' => $variables['settings']['pdf_width'],
        'height' => $variables['settings']['pdf_height'],
        'inline' => 'true',
      ),
      'fragment' => 'pdf_reader',
    );
    $output = l(t($variables['settings']['colorbox_link_text']), $file_url, $options);
    $output .= '<div style="display:none">' . $html . '</div>';
  }
  return $output;
}
function _pdf_reader_load_pdf_js($file_url) {
  $path = drupal_get_path('module', 'pdf_reader');
  $d_path = base_path() . $path;
  drupal_add_js("{$path}/js/pdf.js");
  drupal_add_js("PDFJS.workerSrc = '{$d_path}/js/pdf.js'", 'inline');
  drupal_add_js("{$path}/js/l10n.js");
  drupal_add_js("{$path}/js/compatibility.js");
  drupal_add_js("{$path}/js/viewer.js");
  drupal_add_css("{$path}/css/pdf_reader-viewer.css");
  drupal_add_js('kDefaultURL = "' . $file_url . '";', 'inline');
}
Functions

Name	Description
pdf_reader_field_formatter_info	Implement hook_field_formatter_info().
pdf_reader_field_formatter_settings_form	Implements hook_field_formatter_settings_form().
pdf_reader_field_formatter_settings_summary	Implements hook_field_formatter_settings_summary().
pdf_reader_field_formatter_view	Implements hook_field_formatter_view().
pdf_reader_permission	Implements hook_permission().
pdf_reader_theme	Implements hook_theme().
theme_pdf_reader	Theme the field with pdf reader
_pdf_reader_load_pdf_js
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pdf_reader.module in PDF Reader 7

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