Improve isElementOnTop algorithm

6 years ago · 949dca72da
parent 63041c5d6c
commit 949dca72da
1 changed files with 2 additions and 2 deletions
--- a/core/js/get_markers.js
+++ b/core/js/get_markers.js
@ -36,8 +36,8 @@
    }
    function isElementOnTop(element, rect){
-        let topElement = document.elementFromPoint(rect[1], rect[0]);
+        let topElement = document.elementFromPoint((rect[1] + rect[2])/2, (rect[0] + rect[3])/2);
-        return element.isSameNode(topElement) || element.contains(topElement) || topElement.contains(element);
+        return topElement != undefined && (element.isSameNode(topElement) || element.contains(topElement) || topElement.contains(element));
    }
    function hasCopy(validRects, rect){