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* [patch] ox-beamer: allow setting frame subtitle with BEAMER_SUBTITLE property
@ 2024-07-06 11:46 hugo
  2024-07-06 15:39 ` Ihor Radchenko
  0 siblings, 1 reply; 5+ messages in thread
From: hugo @ 2024-07-06 11:46 UTC (permalink / raw)
  To: emacs-orgmode

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Hi all,

I found recently I wanted to add subtitles to some slides in beamer in
an export from org-mode. In the end I had to write an
explicit #+beamer: declaration with latex code in it for each
headline. The attached patch implements an easier (I think) way of
setting subtitles, with properties on org headings which are exported
as frames. I hope this is helpful.

Best,

Hugo

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From 88b04892fd270989980c5d34595213e67d8c8f3a Mon Sep 17 00:00:00 2001
From: Hugo Heagren <hugo@heagren.com>
Date: Fri, 5 Jul 2024 22:13:19 +0100
Subject: [PATCH] ox-beamer: allow setting frame subtitle with headline
 property

* lisp/ox-beamer.el (org-beamer--format-frame): allow a frame subtitle
to be specified in the BEAMER_SUBTITLE property. If specified, put it
in the second non-optional argument to \begin{frame}.
* doc/org-manual.org (Frames and Blocks in Beamer): document above behaviour.
---
 doc/org-manual.org | 5 +++++
 lisp/ox-beamer.el  | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/doc/org-manual.org b/doc/org-manual.org
index ad584d7a5..cfa1e4b85 100644
--- a/doc/org-manual.org
+++ b/doc/org-manual.org
@@ -12653,6 +12653,11 @@ *** Frames and Blocks in Beamer
   frames.  It is also useful for properly closing a =column=
   environment.
 
+  #+cindex: @samp{BEAMER_SUBTITLE}, property
+  If =BEAMER_SUBTITLE= is set, org exports its value as the subtitle
+  for the headline's frame. This property has no effect on headlines
+  which are not exported as frames.
+
   #+cindex: @samp{BEAMER_ACT}, property
   #+cindex: @samp{BEAMER_OPT}, property
   When =BEAMER_ACT= is set for a headline, Org export translates that
diff --git a/lisp/ox-beamer.el b/lisp/ox-beamer.el
index 51684448d..6925c8092 100644
--- a/lisp/ox-beamer.el
+++ b/lisp/ox-beamer.el
@@ -470,6 +470,10 @@ (defun org-beamer--format-frame (headline contents info)
 		      (if (and env (equal (downcase env) "fullframe")) ""
 			(org-export-data
 			 (org-element-property :title headline) info))))
+            ;; Subtitle
+            (when-let ((subtitle
+                        (org-element-property :BEAMER_SUBTITLE headline)))
+              (format "{%s}" subtitle))
 	    "\n"
 	    ;; The following workaround is required in fragile frames
 	    ;; as Beamer will append "\par" to the beginning of the
-- 
2.20.1


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Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-07-06 11:46 [patch] ox-beamer: allow setting frame subtitle with BEAMER_SUBTITLE property hugo
2024-07-06 15:39 ` Ihor Radchenko
2024-07-08 12:57   ` hugo
2024-07-08 18:17     ` Ihor Radchenko
     [not found]       ` <4af34ba26f42fd8ef329e8690393ec9d@heagren.com>
2024-07-10 14:03         ` Ihor Radchenko

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