From 9bfcbc184ec99631ea7d2b912e79b1edde17a111 Mon Sep 17 00:00:00 2001
From: Ulrich-Matthias Schäfer <ulima.ums@googlemail.com>
Date: Thu, 16 Mar 2017 12:48:20 +0100
Subject: unified all boxes (#634)

unified all boxes

- SVG.Box for everything
- bbox, rbox and viewbox as methods
- boxes can be created with string, array, object, list...
- added helper to simplify boxes code
---
 src/helpers.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/helpers.js')

diff --git a/src/helpers.js b/src/helpers.js
index b04c506..41f9620 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -1,3 +1,17 @@
+function isNulledBox(box) {
+  return !box.w && !box.h && !box.x && !box.y
+}
+
+function domContains(node) {
+  return (document.documentElement.contains || function(node) {
+    // This is IE - it does not support contains() for top-level SVGs
+    while (node.parentNode){
+      node = node.parentNode;
+    }
+    return node == document
+  }).call(document.documentElement, node)
+}
+
 function pathRegReplace(a, b, c, d) {
   return c + d.replace(SVG.regex.dots, ' .')
 }
@@ -185,4 +199,4 @@ function idFromReference(url) {
 }
 
 // Create matrix array for looping
-var abcdef = 'abcdef'.split('')
\ No newline at end of file
+var abcdef = 'abcdef'.split('')
-- 
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