public function PdfThumbnail::settingsForm in PDF 8

Returns a form to configure settings for the formatter.

Invoked from \Drupal\field_ui\Form\EntityDisplayFormBase to allow administrators to configure the formatter. The field_ui module takes care of handling submitted form values.

Parameters

array $form: The form where the settings form is being included in.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array The form elements for the formatter settings.

Overrides FormatterBase::settingsForm

File

src/Plugin/Field/FieldFormatter/PdfThumbnail.php, line 27

Class

PdfThumbnail

Plugin annotation @FieldFormatter( id = "pdf_thumbnail", label = @Translation("PDF: Display the first page"), description = @Translation("Display the first page of the PDF file."), field_types = {"file"} )

Namespace

Drupal\pdf\Plugin\Field\FieldFormatter

Code

public function settingsForm(array $form, FormStateInterface $form_state) {
  $elements = parent::settingsForm($form, $form_state);
  $elements['scale'] = [
    '#type' => 'textfield',
    '#title' => t('Set the scale of PDF pages'),
    '#default_value' => $this
      ->getSetting('scale'),
  ];
  $elements['width'] = [
    '#type' => 'textfield',
    '#title' => 'Width',
    '#default_value' => $this
      ->getSetting('width'),
    '#description' => t('Width of the viewer. Ex: 250px or 100%'),
  ];
  $elements['height'] = [
    '#type' => 'textfield',
    '#title' => 'Height',
    '#default_value' => $this
      ->getSetting('height'),
    '#description' => t('Height of the viewer. Ex: 250px or 100%'),
  ];
  return $elements;
}