From daa0e284c32cc8c97006e3a1701ab96ddfabfd30 Mon Sep 17 00:00:00 2001
From: Henry Jameson <me@hjkos.com>
Date: Wed, 25 Sep 2019 00:21:55 +0300
Subject: [PATCH] forgotten file

---
 .../offset_finder/offset_finder.service.js    | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/services/offset_finder/offset_finder.service.js

diff --git a/src/services/offset_finder/offset_finder.service.js b/src/services/offset_finder/offset_finder.service.js
new file mode 100644
index 00000000..edee6412
--- /dev/null
+++ b/src/services/offset_finder/offset_finder.service.js
@@ -0,0 +1,20 @@
+export const findOffset = (child, parent, { top = 0, left = 0 } = {}, ignorePadding = true) => {
+  const result = {
+    top: top + child.offsetTop,
+    left: left + child.offsetLeft
+  }
+  if (!ignorePadding && child !== window) {
+    const topPaddingStr = window.getComputedStyle(child)['padding-top']
+    const topPadding = Number(topPaddingStr.substring(0, topPaddingStr.length - 2))
+    const leftPaddingStr = window.getComputedStyle(child)['padding-left']
+    const leftPadding = Number(leftPaddingStr.substring(0, leftPaddingStr.length - 2))
+    result.top += ignorePadding ? 0 : topPadding
+    result.left += ignorePadding ? 0 : leftPadding
+  }
+
+  if (child.offsetParent && (parent === window || parent.contains(child.offsetParent))) {
+    return findOffset(child.offsetParent, parent, result, false)
+  } else {
+    return result
+  }
+}