From 9432744ecd8c86d3f23bafc4418c65552fbde29a Mon Sep 17 00:00:00 2001
From: Luis Leiva <lleiva@sciling.com>
Date: Sat, 28 Apr 2018 19:54:30 +0200
Subject: [PATCH] Fixed negative finger IDs issue on iOS devices

---
 jquery.sketchable.js | 6 +++---
 sketchable.js        | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/jquery.sketchable.js b/jquery.sketchable.js
index 5be0e60..2979e7e 100644
--- a/jquery.sketchable.js
+++ b/jquery.sketchable.js
@@ -502,7 +502,7 @@
     // Don't handle right clicks.
     if (e.which === 3) return false;
 
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier || 0),
       elem    = $(e.target),
       data    = elem.data(namespace),
       options = data.options;
@@ -543,7 +543,7 @@
    * @private
    */
   function moveHandler(e) {
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier || 0),
       elem    = $(e.target),
       data    = elem.data(namespace),
       options = data.options;
@@ -581,7 +581,7 @@
    * @private
    */
   function upHandler(e) {
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier || 0),
       elem    = $(e.target),
       data    = elem.data(namespace),
       options = data.options;
diff --git a/sketchable.js b/sketchable.js
index 691c6bf..1f2a0f2 100644
--- a/sketchable.js
+++ b/sketchable.js
@@ -502,7 +502,7 @@
     // Don't handle right clicks.
     if (Event.isRightClick(e)) return false;
 
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier),
       elem    = e.target,
       data    = dataBind(elem)[namespace],
       options = data.options;
@@ -543,7 +543,7 @@
    * @ignore
    */
   function moveHandler(e) {
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier),
       elem    = e.target,
       data    = dataBind(elem)[namespace],
       options = data.options;
@@ -581,7 +581,7 @@
    * @ignore
    */
   function upHandler(e) {
-    var idx   = e.identifier || 0,
+    var idx   = Math.abs(e.identifier),
       elem    = e.target,
       data    = dataBind(elem)[namespace],
       options = data.options;