From 178d61ae379a77b6bcd83d81253e48dfad6fd6ee Mon Sep 17 00:00:00 2001
From: Robpol86 <robpol86@gmail.com>
Date: Wed, 23 Oct 2013 22:16:02 -0500
Subject: [PATCH] Implemented per-page or site-wide background images.

If the user sets "background: /path/to/image.jpg" or an http(s) url in their _config.yml, or if they set it in a post/page's yaml front matter, the displayed page will use that image as the background. If their background is transparent, the default background color will also be visible. Setting a background in a page/post will take precedence over the one set in _config.yml.
---
 _includes/head.html | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/_includes/head.html b/_includes/head.html
index bb238e4..767c2df 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -56,3 +56,11 @@
 <link rel="apple-touch-icon-precomposed" sizes="114x114" href="{{ site.url }}/images/apple-touch-icon-114x114-precomposed.png">
 <!-- 144x144 (precomposed) for iPad 3rd and 4th generation -->
 <link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ site.url }}/images/apple-touch-icon-144x144-precomposed.png">
+
+<!-- Background -->
+{% if page.background %}
+    {% capture page_bgimg %}{% if page.background contains 'http' %}{{ page.background }}{% else %}{{ site.url }}{{ page.background }}{% endif %}{% endcapture %}
+{% elsif site.background %}
+    {% capture page_bgimg %}{% if site.background contains 'http' %}{{ site.background }}{% else %}{{ site.url }}{{ site.background }}{% endif %}{% endcapture %}
+{% endif %}
+{% if page_bgimg %}<style type="text/css">body {background-image:url({{ page_bgimg }});}</style>{% endif %}