From c2c71ca06de159f018dde51c11c2573c32ac1c07 Mon Sep 17 00:00:00 2001
From: Martin Edenhofer <me@edenhofer.de>
Date: Fri, 27 May 2016 15:30:36 +0200
Subject: [PATCH] Improved pasting images on retina devices.

---
 app/assets/javascripts/application.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
index 8bb82de7d..6a168d270 100644
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -165,6 +165,13 @@ function toCamelCase(str) {
     .replace(/^(.)/, function($1) { return $1.toUpperCase(); });
 };
 
+function isRetina(){
+  if (window.matchMedia) {
+    var mq = window.matchMedia("only screen and (min--moz-device-pixel-ratio: 1.3), only screen and (-o-min-device-pixel-ratio: 2.6/2), only screen and (-webkit-min-device-pixel-ratio: 1.3), only screen  and (min-device-pixel-ratio: 1.3), only screen and (min-resolution: 1.3dppx)");
+    return (mq && mq.matches || (window.devicePixelRatio > 1));
+  }
+}
+
 jQuery.event.special.remove = {
   remove: function(e) {
     if (e.handler) e.handler();