PdfPages.php in PDF 8
File
src/Plugin/Field/FieldFormatter/PdfPages.php
View source
<?php
namespace Drupal\pdf\Plugin\Field\FieldFormatter;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
class PdfPages extends FormatterBase {
public static function defaultSettings() {
return [
'scale' => 1,
] + parent::defaultSettings();
}
public function settingsForm(array $form, FormStateInterface $form_state) {
$elements['scale'] = [
'#type' => 'textfield',
'#title' => t('Set the scale of PDF pages'),
'#default_value' => $this
->getSetting('scale'),
];
return $elements;
}
public function settingsSummary() {
$summary = [];
$scale = $this
->getSetting('scale');
if (empty($scale)) {
$summary[] = $this
->t('No settings');
}
else {
$summary[] = t('Scale: @scale', [
'@scale' => $scale,
]);
}
return $summary;
}
public function viewElements(FieldItemListInterface $items, $langcode) {
$elements = [];
foreach ($items as $delta => $item) {
if ($item->entity
->getMimeType() == 'application/pdf') {
$scale = $this
->getSetting('scale');
$file_url = file_create_url($item->entity
->getFileUri());
$html = [
'#type' => 'html_tag',
'#tag' => 'div',
'#attributes' => [
'class' => [
'pdf-pages',
],
'id' => [
'pdf-pages-' . $delta,
],
'file' => [
$file_url,
],
'scale' => [
$scale,
],
],
];
$elements[$delta] = $html;
}
else {
$elements[$delta] = [
'#theme' => 'file_link',
'#file' => $item->entity,
];
}
}
$elements['#attached']['library'][] = 'pdf/drupal.pdf';
$worker = file_create_url(base_path() . 'libraries/pdf.js/build/pdf.worker.js');
$elements['#attached']['drupalSettings'] = [
'pdf' => [
'workerSrc' => $worker,
],
];
return $elements;
}
}
Classes
Name |
Description |
PdfPages |
Plugin annotation
@FieldFormatter(
id = "pdf_pages",
label = @Translation("PDF: Continuous scroll (experimental)"),
description = @Translation("Don't use this to display big PDF file."),
field_types = {"file"}
) |