From 4c64e2b61db2e8872fe421830af56ddb2cacd8d1 Mon Sep 17 00:00:00 2001
From: Timo Kilpilehto <timo.kilpilehto@appgyver.com>
Date: Thu, 15 Jun 2017 10:41:25 +0300
Subject: [PATCH] Rgb/rgba values for colours broke img check

---
 src/jquery-qrcode.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/jquery-qrcode.js b/src/jquery-qrcode.js
index cbbaf9c..60a9e73 100644
--- a/src/jquery-qrcode.js
+++ b/src/jquery-qrcode.js
@@ -9,6 +9,8 @@
         return !!(elem.getContext && elem.getContext('2d'));
     }());
 
+    var isColorFunctionRegExp = /rgba?\(.+\)/gi;
+
     // Wrapper for the original QR code generator.
     function createQRCode(text, level, version, quiet) {
         var qr = {};
@@ -122,7 +124,7 @@
     }
 
     function drawBackground(qr, context, settings) {
-        if (jq(settings.background).is('img')) {
+        if (!settings.background.match(isColorFunctionRegExp) && jq(settings.background).is('img')) {
             context.drawImage(settings.background, 0, 0, settings.size, settings.size);
         } else if (settings.background) {
             context.fillStyle = settings.background;
@@ -256,7 +258,7 @@
                 fn(qr, context, settings, l, t, w, row, col);
             }
         }
-        if (jq(settings.fill).is('img')) {
+        if (!settings.background.match(isColorFunctionRegExp) && jq(settings.fill).is('img')) {
             context.strokeStyle = 'rgba(0,0,0,0.5)';
             context.lineWidth = 2;
             context.stroke();