Add a PRE_RENDER event

public function preRender($event) { $printEngine = $event->getPrintEngine(); $printObject = $printEngine->getPrintObject(); // Grab HTML as a string from somewhere. $coverHtml = $this->generateCoverPage(); // Set cover page. $printObject->addCover($coverHtml); }

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Comment 2 months ago →

🇩🇪Germany drubb Sindelfingen

Tested this patch with the mPDF engine, works great for e.g. adding headers and footers. Example:

public function onEntityPrintPreRender(PreRenderPrintEvent $event): void {
    $printEngine = $event->getPrintEngine();
    if (!$printEngine || $printEngine->getPluginId() !== 'mpdf') {
      return;
    }
    /** @var \Drupal\entity_print\Plugin\EntityPrint\PrintEngine\Mpdf $printEngine */
    $printEngine->getPrintObject()->SetHTMLHeader('This is the header text...');
    $printEngine->getPrintObject()->SetHTMLFooter('This is the footer text...');
  }

In many engines, headers and footers must be added before rendering anything, so that's a perfect use case IMHO.

Small fix:

The code used for dispatching the event in PrintBuilder.php is broken (wrong argument order). I've therefore attached a modified version of the patch from MR-13.

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