From 2b40cf3390de9dca07da1f38f1e636c8516d421c Mon Sep 17 00:00:00 2001
From: Thomas A Caswell <tcaswell@gmail.com>
Date: Wed, 18 Apr 2018 17:54:11 -0400
Subject: [PATCH] Backport PR #11063: Enable sphinx.ext.viewcode

---
 doc/_static/mpl.css | 18 ++++++++++++++++++
 doc/conf.py         |  1 +
 2 files changed, 19 insertions(+)

diff --git a/doc/_static/mpl.css b/doc/_static/mpl.css
index 2c547d2ab8a2..1df6e1709450 100644
--- a/doc/_static/mpl.css
+++ b/doc/_static/mpl.css
@@ -1010,6 +1010,24 @@ p.sphx-glr-signature a.reference.external {
     font-weight: 400;
 }
 
+.viewcode-link {
+    float: right;
+}
+
+.viewcode-back {
+    float: right;
+    font-family: "Helvetica Neue", Helvetica, 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva', 'Verdana', sans-serif;
+}
+
+div.viewcode-block:target {
+    margin: -1px -13px;
+    padding: 0 10px;
+    border-top: 1px solid #ccc;
+    border-bottom: 1px solid #ccc;
+    background-color: #f4debf;
+
+}
+
 .sidebar-announcement {
     border: 1px solid #11557C;
     background: #eff9ff;
diff --git a/doc/conf.py b/doc/conf.py
index 4bb08c8d0c38..e48ae64925e7 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -34,6 +34,7 @@
     'sphinx.ext.doctest',
     'sphinx.ext.inheritance_diagram',
     'sphinx.ext.intersphinx',
+    'sphinx.ext.viewcode',
     'IPython.sphinxext.ipython_console_highlighting',
     'IPython.sphinxext.ipython_directive',
     'numpydoc',  # Needs to be loaded *after* autodoc.