From 678a2b7945baa386359b8188992c7a391f8b82cc Mon Sep 17 00:00:00 2001
From: Nikola Knezevic <laladelausanne@gmail.com>
Date: Wed, 9 Sep 2015 13:49:43 +0200
Subject: [PATCH] Add support for org-reveal to org layer

org-reveal is an extension to org mode that allows exporting of org files as
reveal.js presentations. Since not everyone needs this functionality, the
loading of the package is controlled via the `org-enable-reveal-js` switch,
which, if set to `t` would load the package.
---
 layers/+emacs/org/README.org  | 21 +++++++++++++++++++++
 layers/+emacs/org/config.el   |  3 +++
 layers/+emacs/org/packages.el | 19 +++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/layers/+emacs/org/README.org b/layers/+emacs/org/README.org
index d0691e18e..bf083d748 100644
--- a/layers/+emacs/org/README.org
+++ b/layers/+emacs/org/README.org
@@ -11,6 +11,7 @@
    - [[#layer][Layer]]
    - [[#github-support][Github support]]
    - [[#gnuplot-support][Gnuplot support]]
+   - [[#reveal.js support][reveal.js support]]
    - [[#different-bullets][Different bullets]]
  - [[#key-bindings][Key bindings]]
    - [[#org][Org]]
@@ -88,6 +89,26 @@ at this stage.  It is possible to disable the configuration of gnuplot support
 as usual by adding the package =gnuplot= to your =dotspacemacs-excluded-packages=
 variable.
 
+** Reveal.js support
+
+To enable the export of your org file as a [[http://lab.hakim.se/reveal-js/][reveal.js]] presentation, set the
+variable =org-enable-reveal-js= to =t=. This will install the [[https://github.com/yjwen/org-reveal/][org-reveal]] extension.
+
+#+BEGIN_SRC emacs-lisp
+  (setq-default dotspacemacs-configuration-layers '(
+    (org :variables
+         org-enable-reveal-js t)))
+#+END_SRC
+
+In order to be able to use org-reveal, download =reveal.js= from its
+[[http://lab.hakim.se/reveal-js/#/][homepage]] and set =org-reveal-js= to the
+download path, as described in the [[https://github.com/yjwen/org-reveal#obtain-revealjs][manual]]. Alternatively, add the following line
+to each =.org= file you want to process:
+
+#+BEGIN_EXAMPLE
+#+REVEAL_ROOT: http://cdn.jsdelivr.net/reveal.js/3.0.0/
+#+END_EXAMPLE
+
 ** Different bullets
 You can tweak the bullets displayed in the org buffer in the function
 =dotspacemacs/user-config= of your dotfile by setting the variable
diff --git a/layers/+emacs/org/config.el b/layers/+emacs/org/config.el
index ec4935f78..4af403b78 100644
--- a/layers/+emacs/org/config.el
+++ b/layers/+emacs/org/config.el
@@ -14,4 +14,7 @@
 (defvar org-enable-github-support nil
   "If non-nil Github related packages are configured.")
 
+(defvar org-enable-reveal-js nil
+  "If non-nil, enables ox-reveal export.")
+
 (spacemacs|defvar-company-backends org-mode)
diff --git a/layers/+emacs/org/packages.el b/layers/+emacs/org/packages.el
index 56e619874..d7d33bcf7 100644
--- a/layers/+emacs/org/packages.el
+++ b/layers/+emacs/org/packages.el
@@ -31,6 +31,7 @@
     org-repo-todo
     (ox-gfm :location local)
     persp-mode
+    ox-reveal
     ))
 
 (defun org/post-init-company ()
@@ -559,6 +560,24 @@ a Markdown buffer and use this command to convert it.
     :body
     (find-file (first (org-agenda-files)))))
 
+(defun org/init-toc-org ()
+  (use-package toc-org
+    :defer t
+    :init
+    (progn
+      (setq toc-org-max-depth 10)
+      (add-hook 'org-mode-hook 'toc-org-enable))))
+
+(defun org/init-ox-reveal ()
+  (use-package ox-reveal
+    :if org-enable-reveal-js
+    :defer t
+    :init
+    (progn
+      ;; seems to be required otherwise the extension is not
+      ;; loaded properly by org
+      (with-eval-after-load 'org (require 'ox-reveal)))))
+
 (defun org/init-htmlize ()
  (use-package htmlize
    :defer t))