From 529795d2c2d276112b7361951a0c2bc50614564b Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Wed, 13 Dec 2017 12:16:42 +0100
Subject: [PATCH] fix #1831 @0:20

---
 js/libs/fluidbook/fluidbook.js        | 8 +++++---
 js/libs/fluidbook/fluidbook.resize.js | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/js/libs/fluidbook/fluidbook.js b/js/libs/fluidbook/fluidbook.js
index c8ca6b0e..d2bfac1e 100644
--- a/js/libs/fluidbook/fluidbook.js
+++ b/js/libs/fluidbook/fluidbook.js
@@ -426,16 +426,18 @@ Fluidbook.prototype = {
         var move = $("#center-fluidbook,#center-shadow");
         var currentLeft = $("#center-fluidbook").data('left');
         var left = 0;
+        if (center == undefined) {
+            center = $("#center-fluidbook").data('center');
+        }
         if (center != 0) {
             left = this.resize.centerOffset * center;
         }
-
-
+        
         if (currentLeft == left) {
             return;
         }
 
-        $("#center-fluidbook").data('left', left);
+        $("#center-fluidbook").data({left: left, center: center});
 
         if (animate) {
             $(move).addClass('animate');
diff --git a/js/libs/fluidbook/fluidbook.resize.js b/js/libs/fluidbook/fluidbook.resize.js
index db8e29ac..64bc12ec 100644
--- a/js/libs/fluidbook/fluidbook.resize.js
+++ b/js/libs/fluidbook/fluidbook.resize.js
@@ -148,6 +148,7 @@ FluidbookResize.prototype = {
             height: fhh
         });
         this.centerOffset = fw / 4;
+        this.fluidbook.centerBook();
 
         if ($("#pagesnumbers").data('size') == null) {
             $("#pagesnumbers").data('size', parseInt($("#pagesnumbers").css('font-size')));
-- 
2.39.5