array(
'label' => t('PDF: Default viewer of PDF.js'),
'description' => 'Use the default viewer like http://mozilla.github.io/pdf.js/web/viewer.html.',
'field types' => array('file'),
'settings' => array(
'keep_pdfjs' => TRUE,
'width' => '100%',
'height' => '600px',
),
),
'pdf_thumbnail' => array(
'label' => t('PDF: Display the first page'),
'description' => 'Display the first page of the PDF file.',
'field types' => array('file'),
'settings' => array(
'scale' => 1,
'width' => '100%',
'height' => '',
),
),
'pdf_pages' => array(
'label' => t('PDF: Continuous scroll (experimental)'),
'description' => 'Don\'t use this to display big PDF file.',
'field types' => array('file'),
'settings' => array('scale' => 1),
),
);
}
function pdf_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
$element = array();
if ($display['type'] == 'pdf_default') {
$element['keep_pdfjs'] = array(
'#type' => 'checkbox',
'#title' => t('Always use pdf.js'),
'#default_value' => $settings['keep_pdfjs'],
'#description' => t("Use pdf.js even the browser has Adobe Reader Plugin, WebKit PDF Reader for Safari or the PDF Reader for Chrome (Chrome's default alternative to the Adobe Reader Plugin) installed."),
);
$element['width'] = array(
'#type' => 'textfield',
'#title' => 'Width',
'#default_value' => $settings['width'],
'#description' => t('Width of the viewer. Ex: 250px or 100%'),
);
$element['height'] = array(
'#type' => 'textfield',
'#title' => 'Height',
'#default_value' => $settings['height'],
'#description' => t('Height of the viewer. Ex: 250px or 100%'),
);
}
if ($display['type'] == 'pdf_thumbnail') {
$element['scale'] = array(
'#type' => 'textfield',
'#title' => t('Set the scale of PDF pages'),
'#default_value' => $settings['scale'],
'#description' => t('Scale value for pdf.js'),
);
$element['width'] = array(
'#type' => 'textfield',
'#title' => 'Width',
'#default_value' => $settings['width'],
'#description' => t('Width of the viewer. Ex: 250px or 100%'),
);
$element['height'] = array(
'#type' => 'textfield',
'#title' => 'Height',
'#default_value' => $settings['height'],
'#description' => t('Height of the viewer. Ex: 250px or 100%'),
);
}
if ($display['type'] == 'pdf_pages') {
$element['scale'] = array(
'#type' => 'textfield',
'#title' => t('Set the scale of PDF pages'),
'#default_value' => $settings['scale'],
'#description' => t('Scale value for pdf.js'),
);
}
return $element;
}
/**
* Implements hook_field_formatter_settings_summary().
*/
function pdf_field_formatter_settings_summary($field, $instance, $view_mode) {
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
if ($display['type'] == 'pdf_default') {
return t('Use pdf.js even users have PDF reader plugin: @keep_pdfjs', array('@keep_pdfjs' => $settings['keep_pdfjs'] ? t('Yes') : t('No'))) . '
' . t('Width: @width , Height: @height', array('@width' => $settings['width'] , '@height' => $settings['height']));
}
if ($display['type'] == 'pdf_thumbnail') {
return t('Scale: @scale', array('@scale' => $settings['scale'])) . '
' . t('Widht: @width , Height: @height', array('@width' => $settings['width'] , '@height' => $settings['height']));
}
if ($display['type'] == 'pdf_pages') {
return t('Scale: @scale', array('@scale' => $settings['scale']));
}
return '';
}
/**
* Implements hook_field_formatter_view().
*/
function pdf_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
$element = array();
$settings = $display['settings'];
switch ($display['type']) {
case 'pdf_default':
foreach ($items as $delta => $item) {
if (strpos($item['filemime'], 'pdf')) {
$element[$delta] = array(
'#theme' => 'pdf_formatter_default',
'#file' => (object) $item,
'#keep_pdfjs' => $settings['keep_pdfjs'],
'#width' => $settings['width'],
'#height' => $settings['height'],
);
}
}
break;
case 'pdf_thumbnail':
foreach ($items as $delta => $item) {
if (strpos($item['filemime'], 'pdf')) {
$element[$delta] = array(
'#theme' => 'pdf_formatter_thumbnail',
'#file' => (object)$item,
'#scale' => $settings['scale'],
'#width' => $settings['width'],
'#height' => $settings['height'],
);
}
}
break;
case 'pdf_pages':
foreach ($items as $delta => $item) {
if (strpos($item['filemime'], 'pdf')) {
$element[$delta] = array(
'#theme' => 'pdf_formatter_pages',
'#file' => (object) $item,
'#scale' => $settings['scale'],
);
}
}
break;
}
return $element;
}
function theme_pdf_formatter_default($variables) {
$library = libraries_load('pdf.js');
if ($library['loaded'] == FALSE) {
drupal_set_message($library['error message'], 'error');
return 'Please download and install ' . l($library['name'], $library['download url']) . '!';
}
$file_url = file_create_url($variables['file']->uri);
$module_path = drupal_get_path('module', 'pdf');
$library_path = libraries_get_path('pdf.js', 'viewer');
$iframe_src = file_create_url($library_path . '/web/viewer.html') . '?file=' . rawurlencode($file_url);
$force_pdfjs = $variables['keep_pdfjs'];
$html = array(
'#type' => 'html_tag',
'#tag' => 'iframe',
'#value' => $file_url,
'#attributes' => array(
'class' => array('pdf'),
'webkitallowfullscreen' => '',
'mozallowfullscreen' => '',
'allowfullscreen' => '',
'frameborder' => 'no',
'width' => $variables['width'],
'height' => $variables['height'],
'src' => $iframe_src,
'data-src' => $file_url,
),
);
if ($force_pdfjs != TRUE) {
drupal_add_js($module_path . '/js/acrobat_detection.js');
drupal_add_js($module_path . '/js/default.js');
}
return render($html);
}
function theme_pdf_formatter_thumbnail($variables) {
$file_url = file_create_url($variables['file']->uri);
$library = libraries_load('pdf.js');
if ($library['loaded'] == FALSE) {
drupal_set_message($library['error message'], 'error');
return 'Please download and install ' . l($library['name'], $library['download url']) . '!';
}
$worker_loader = file_create_url(libraries_get_path('pdf.js') . '/build/pdf.worker.js') . "?v={$library['version']}";
$js = "PDFJS.workerSrc = '$worker_loader';";
$module_path = drupal_get_path('module', 'pdf');
//drupal_add_css($module_path . '/css/pdf.css');
//drupal_add_js($module_path . '/js/pdf.js', array('scope' => 'footer'));
drupal_add_js($js, array('type' => 'inline', 'scope' => 'footer'));
$canvas = array(
'#type' => 'html_tag',
'#tag' => 'canvas',
//'#value' => $file_url,
'#attributes' => array(
'class' => array('pdf-thumbnail', 'pdf-canvas'),
'scale' => $variables['scale'],
'file' => $file_url,
'style' => 'width:' . $variables['width'] . ';height:' . $variables['height'] . ';',
),
);
$html = array(
'#type' => 'html_tag',
'#tag' => 'div',
'#value' => render($canvas),
'#attributes' => array('class' => array('pdf')),
);
$html['#attached']['js'] = array($module_path . '/js/pdf.js');
$html['#attached']['css'] = array($module_path . '/css/pdf.css');
return render($html);
}
function theme_pdf_formatter_pages($variables) {
$scale = $variables['scale'];
$module_path = drupal_get_path('module', 'pdf');
$file_url = file_create_url($variables['file']->uri);
$filename = $variables['file']->filename;
$fid = $variables['file']->fid;
drupal_add_css($module_path . '/css/TextLayer.css');
drupal_add_css($module_path . '/css/pdf.css');
$library = libraries_load('pdf.js', 'viewer');
if ($library['loaded'] == FALSE) {
drupal_set_message($library['error message'], 'error');
return 'Please download and install ' . l($library['name'], $library['download url']) . '!';
}
$worker_loader = file_create_url(libraries_get_path('pdf.js') . '/build/pdf.worker.js') . "?v={$library['version']}";
$js = "PDFJS.workerSrc = '$worker_loader';";
drupal_add_js($js, array('type' => 'inline'));
//drupal_add_js($module_path . '/js/pdf.js');
$link = array(
'text' => $filename,
'path' => $file_url,
'options' => array(
'attributes' => array(),
'html' => FALSE,
),
);
$html = array(
'#type' => 'html_tag',
'#tag' => 'div',
'#value' => t('Download: ') . theme_link($link),
'#attributes' => array(
'class' => array('pdf-pages'),
'id' => array('viewer', 'fid-' . $fid),
'scale' => $variables['scale'],
'file' => $file_url,
),
);
$html['#attached']['js'] = array($module_path . '/js/pdf.js');
$html['#attached']['css'] = array($module_path . '/css/pdf.css');
return render($html);
}