From fc8fa1b5dcb9811c785f39b89dd0560baaf82d95 Mon Sep 17 00:00:00 2001
From: sardyy <tiagosardinha94@hotmail.com>
Date: Thu, 11 Oct 2018 22:26:05 +0100
Subject: [PATCH] Calculate viewport width correctly (#167)

---
 addon/mixins/in-viewport.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/addon/mixins/in-viewport.js b/addon/mixins/in-viewport.js
index 134b6ed7..16bc61b0 100644
--- a/addon/mixins/in-viewport.js
+++ b/addon/mixins/in-viewport.js
@@ -173,7 +173,7 @@ export default Mixin.create({
     }
 
     const height = scrollableArea ? scrollableArea.offsetHeight + scrollableArea.getBoundingClientRect().top : window.innerHeight;
-    const width = scrollableArea ? scrollableArea.offsetWidth : window.innerWidth;
+    const width = scrollableArea ? scrollableArea.offsetWidth + scrollableArea.getBoundingClientRect().left : window.innerWidth;
     const boundingClientRect = element.getBoundingClientRect();
 
     if (boundingClientRect) {