From 8de7896d4efbbb39d71789630c209b04a5d6fea7 Mon Sep 17 00:00:00 2001
From: Thibault Deckers <thibault.deckers@gmail.com>
Date: Mon, 11 Jan 2021 17:29:40 +0900
Subject: [PATCH] viewer: fixed page position overlay for multipage entries
 with no page info

---
 lib/widgets/fullscreen/overlay/bottom.dart | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/widgets/fullscreen/overlay/bottom.dart b/lib/widgets/fullscreen/overlay/bottom.dart
index 762f995e8..9e495c756 100644
--- a/lib/widgets/fullscreen/overlay/bottom.dart
+++ b/lib/widgets/fullscreen/overlay/bottom.dart
@@ -325,11 +325,14 @@ class _PositionTitleRow extends StatelessWidget {
       future: multiPageController.info,
       builder: (context, snapshot) {
         final multiPageInfo = snapshot.data;
-        final pageCount = multiPageInfo?.pageCount ?? '?';
+        final pageCount = multiPageInfo?.pageCount;
+        // page count may be 0 when we know an entry to have multiple pages
+        // but fail to get information about these pages
+        final missingInfo = pageCount == 0;
         return ValueListenableBuilder<int>(
           valueListenable: multiPageController.pageNotifier,
           builder: (context, page, child) {
-            return toText(pagePosition: '${page + 1}/$pageCount');
+            return toText(pagePosition: missingInfo ? null : '${page + 1}/${pageCount ?? '?'}');
           },
         );
       },