From 71c19d731dc6393acc1d67efcd85a5597094ec13 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Tue, 23 Aug 2016 15:31:43 +0000
Subject: [PATCH] Fix #610 @6

---
 js/libs/fluidbook/fluidbook.js          | 12 ++++++++----
 js/libs/fluidbook/fluidbook.support.js  |  2 ++
 js/libs/fluidbook/fluidbook.touch.js    |  6 +++++-
 js/libs/fluidbook/fluidbook.viewport.js | 11 ++++++++---
 4 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/js/libs/fluidbook/fluidbook.js b/js/libs/fluidbook/fluidbook.js
index ffc56d8e..0b345c88 100644
--- a/js/libs/fluidbook/fluidbook.js
+++ b/js/libs/fluidbook/fluidbook.js
@@ -2,7 +2,6 @@
  this.l10n.__('click to call this number');
 
  */
-
 function Fluidbook(datas) {
     this.init(datas);
 }
@@ -32,12 +31,12 @@ Fluidbook.prototype = {
         this.search = new FluidbookSearch(this);
         this.pad = new FluidbookPad(this);
         this.waiters = [];
+        this.viewport = new FluidbookViewport(this);
+        this.viewport.updateViewport();
         if (Modernizr.ftouch && this.support.transitions2d && this.datas.mobileTransitions != 'none') {
             this.touch = new FluidbookTouch(this);
         }
         this.background = new FluidbookBackground(this);
-        this.viewport = new FluidbookViewport();
-        this.viewport.updateViewport();
         this.l10n = new FluidbookL10N(this, $_GET['lang']);
         this.video = new FluidbookVideo(this);
         this.bookmarks = new FluidbookBookmarks(this);
@@ -105,7 +104,7 @@ Fluidbook.prototype = {
         key('end', this.goLastPage.bind(this));
         key('left', this.goPreviousPage.bind(this));
         key('right', this.goNextPage.bind(this));
-        
+
         // See fluidbook.audiodescription.js for specific shortcuts
     },
     hideSplash: function () {
@@ -127,6 +126,11 @@ Fluidbook.prototype = {
         this.ready();
         $("#main").css('visibility', 'visible');
         this.hideLoader(0, true);
+        // See bug #610
+        if (this.touch !== undefined && this.support.android) {
+            this.touch.enableUserScale();
+        }
+
         if (this.support.transitions2d) {
             $("#splash").css('opacity', 0).one(this.support.getTransitionEndEvent(true), function () {
                 $(this).remove();
diff --git a/js/libs/fluidbook/fluidbook.support.js b/js/libs/fluidbook/fluidbook.support.js
index be3b9905..54f4e933 100644
--- a/js/libs/fluidbook/fluidbook.support.js
+++ b/js/libs/fluidbook/fluidbook.support.js
@@ -8,6 +8,8 @@ function FluidbookSupport(fluidbook) {
     this.transitions2d = Modernizr.csstransforms && Modernizr.csstransitions;
     this.transitions3d = Modernizr.csstransforms3d && Modernizr.preserve3d && this.transitions2d;
 
+    this.androidbrowser = this.android && this.userAgent.search(/applewebkit/i) > -1;
+
     this.transitionendevent = null;
 
     if (window.resolution == 'auto') {
diff --git a/js/libs/fluidbook/fluidbook.touch.js b/js/libs/fluidbook/fluidbook.touch.js
index 9c914479..e6c00cab 100644
--- a/js/libs/fluidbook/fluidbook.touch.js
+++ b/js/libs/fluidbook/fluidbook.touch.js
@@ -14,6 +14,7 @@ function FluidbookTouch(fluidbook) {
     this.init();
 }
 
+
 FluidbookTouch.prototype = {
     init: function () {
         this.reset();
@@ -215,11 +216,14 @@ FluidbookTouch.prototype = {
         this.reset();
     },
     enableUserScale: function () {
+        if (this.fluidbook.viewport === undefined) {
+            return;
+        }
         if (this.fluidbook.pad.enabled) {
             this.fluidbook.viewport.maxScale = 1;
             this.fluidbook.viewport.userScalable = false;
         } else {
-            this.fluidbook.viewport.maxScale = 3;
+            this.fluidbook.viewport.maxScale = 5;
             this.fluidbook.viewport.userScalable = true;
         }
         this.fluidbook.viewport.updateViewport();
diff --git a/js/libs/fluidbook/fluidbook.viewport.js b/js/libs/fluidbook/fluidbook.viewport.js
index 4cb839a4..1e0666cb 100644
--- a/js/libs/fluidbook/fluidbook.viewport.js
+++ b/js/libs/fluidbook/fluidbook.viewport.js
@@ -1,11 +1,15 @@
-function FluidbookViewport() {
+function FluidbookViewport(fluidbook) {
     this.width = 'device-width';
     this.height = null;
     this.minScale = 1;
-    this.maxScale = 10;
+    this.maxScale = 5;
     this.initialScale = 0;
-    this.userScalable = false;
+    this.userScalable = true;
     this.meta = $('meta[name="viewport"]');
+    this.fluidbook = fluidbook;
+    if (this.fluidbook.support.androidbrowser) {
+        this.userScalable = true;
+    }
 }
 
 FluidbookViewport.prototype = {
@@ -25,5 +29,6 @@ FluidbookViewport.prototype = {
         var us = this.userScalable == true ? '1' : '0';
         var value = w + h + is + 'minimum-scale=' + Math.max(0.25, this.minScale) + ', maximum-scale=' + Math.min(10, this.maxScale) + ', user-scalable=' + us + ", shrink-to-fit=no";
         this.meta.attr('content', value);
+
     }
 }
\ No newline at end of file
-- 
2.39.5