From 25d25db428330037cb4aa0529e672928ec776e84 Mon Sep 17 00:00:00 2001
From: Alexander Bazo <alexander.bazo@ur.de>
Date: Tue, 27 Aug 2019 14:44:41 +0200
Subject: [PATCH] Use page offset to calculate target coordinates

---
 resources/js/game/GazePoint.js | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/resources/js/game/GazePoint.js b/resources/js/game/GazePoint.js
index 9ec880c..ec5a239 100644
--- a/resources/js/game/GazePoint.js
+++ b/resources/js/game/GazePoint.js
@@ -9,14 +9,19 @@ class GazePoint {
 
   linkTo(node) {
     let bb = node.getBoundingClientRect(),
+      elementLeft = window.pageXOffset + bb.left,
+      elementTop = window.pageYOffset + bb.top,
+      elementRight = window.pageXOffset + bb.right,
+      elementBottom = window.pageYOffset + bb.bottom,
       coordinates;
-    if (this.screenX >= bb.left && this.screenX <= bb.right && this.screenY >=
-      bb.top && this.screenY <= bb.bottom) {
-      this.hasLink = true;
-      this.link = node;
-      this.targetX = this.screenX - bb.left;
-      this.targetY = this.screenY - bb.top;
-    }
+      if (this.screenX >= elementLeft && this.screenX <= elementRight && this
+        .screenY >=
+        elementTop && this.screenY <= elementBottom) {
+        this.hasLink = true;
+        this.link = node;
+        this.targetX = this.screenX - elementLeft;
+        this.targetY = this.screenY - elementTop;
+      }
     return coordinates;
   }
 
--
libgit2 0.26.0