From f669e5dd34c29846137bfc6c8633c1a76f0f1bfa Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Tue, 16 Aug 2022 13:02:46 +0200
Subject: [PATCH] Ignoring "resize" events during printing (issue 15324)

This is a quick work-around, to prevent the viewer from breaking as a result of https://bugzilla.mozilla.org/show_bug.cgi?id=774398
---
 web/app.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/web/app.js b/web/app.js
index c53ebc71e..8915749dd 100644
--- a/web/app.js
+++ b/web/app.js
@@ -2514,7 +2514,12 @@ function webViewerSpreadModeChanged(evt) {
 }
 
 function webViewerResize() {
-  const { pdfDocument, pdfViewer } = PDFViewerApplication;
+  const { pdfDocument, pdfViewer, pdfRenderingQueue } = PDFViewerApplication;
+
+  if (pdfRenderingQueue.printing && window.matchMedia("print").matches) {
+    // Work-around issue 15324 by ignoring "resize" events during printing.
+    return;
+  }
   pdfViewer.updateContainerHeightCss();
 
   if (!pdfDocument) {