Re: [O] Beamer export with \only overlays - how?
On Wed, Oct 09, 2013 at 02:28:30AM +, James Harkins wrote:
Suvayu Ali fatkasuvayu+linux at gmail.com writes:
On Tue, Oct 08, 2013 at 11:41:36PM +0800, James Harkins wrote:
Question: How does one use Beamer's \only command with blocks?
(Successfully, with org-mode's beamer
export, I mean.)
I found in the manual that you can give an overlay specification using
the BEAMER_ACT property... ok... but that's not the same as \only
because, when a latex chunk is marked \only1, it takes *no space* on
2-. Using 1 and 2 causes the 2 to appear lower than the
1. That's not what I want.
Did you try this:
http://orgmode.org/worg/exporters/beamer/ox-beamer.html#environments-overlay
My example file uses BEAMER_ACT, so yes, I did try that. Here's what happens
if I try it with \only1.
Look a bit more carefully ;). The following paragraph has an example
suggesting the onlyenv environment. As far as I understand,
environments are prefered over commands with arguments or macros when
translating headlines. You can nest your block in such an environment.
I realise this is a little less flexible than \only{}, but it seems to
work. I have not tried any of this personally in a long time though.
Hope this helps,
--
Suvayu
Open source is the future. It sets us free.
Re: [O] Beamer export with \only overlays - how?
Suvayu Ali fatkasuvayu+linux at gmail.com writes:
Look a bit more carefully ;). The following paragraph has an example
suggesting the onlyenv environment. As far as I understand,
environments are prefered over commands with arguments or macros when
translating headlines. You can nest your block in such an environment.
I realise this is a little less flexible than \only{}, but it seems to
work. I have not tried any of this personally in a long time though.
Indeed, this does the job. Thanks for the extra pointer.
For future readers, now I have this in my .emacs:
(add-to-list 'org-beamer-environments-extra
'(onlyenv O \\begin{onlyenv}%a \\end{onlyenv}))
And then I can export:
** Frame (beamer_act, not quite right)
*** The problem on this frame
I want Block 1 and Block 2 to occupy the same space on successive
slides.
*** OnlyEnv 1
:B_onlyenv:
:PROPERTIES:
:BEAMER_env: onlyenv
:BEAMER_ACT: 1
:END:
Block 1
Text
*** OnlyEnv 2
:B_onlyenv:
:PROPERTIES:
:BEAMER_env: onlyenv
:BEAMER_ACT: 2
:END:
Block 2
Text 2
--
\begin{frame}[label=sec-1-1]{Frame (beamer$_{\text{act}}$, not quite right)}
\begin{block}{The problem on this frame}
I want Block 1 and Block 2 to occupy the same space on successive slides.
\end{block}
\begin{onlyenv}1
\begin{block}{Block 1}
Text
\end{block}
\end{onlyenv}
\begin{onlyenv}2
\begin{block}{Block 2}
Text 2
\end{block}
\end{onlyenv}
\end{frame}
~~~
I think I overlooked this in the manual because the overlay section is not
organized around (what I think are) the most important user questions:
- Which overlays does org beamer export support?
- How to use them?
Instead, onlyenv appears in a paragraph whose topic sentence is You can
add your own environments by... In other words, the information is there,
but organized in a way that would make your middle school English teacher
break out the red pen.
I'll add a TODO for myself to rewrite this section. I don't know when I can
get to it, though.
~~~
Why is onlyenv not supported out of the box?
hjh
[O] Beamer export with \only overlays - how?
Question: How does one use Beamer's \only command with blocks? (Successfully,
with org-mode's beamer export, I mean.)
I found in the manual that you can give an overlay specification using the BEAMER_ACT property... ok... but that's
not the same as \only because, when a latex chunk is marked \only1, it takes *no space* on 2-.
Using 1 and 2 causes the 2 to appear lower than the 1. That's not what I want.
Hacking it with #+latex: lines is even worse, as explained in the example below.
I suppose there must be a way to do it, albeit undocumented. Or maybe it's
simply not supported, in which case I would have to write the LaTeX directly.
Annoying, but I'll do that if there's no alternative.
hjh
#+LANGUAGE: en
#+OPTIONS: H:2 num:t toc:t \n:nil @:t ::t |:t ^:t -:t f:t *:t :t ':t
#+OPTIONS: TeX:t LaTeX:t skip:nil d:nil todo:t pri:nil tags:not-in-toc
#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+startup: beamer
#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation]
#+BEAMER_THEME: default
#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_act(Act) %4BEAMER_col(Col)
%8BEAMER_opt(Opt)
#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.0 :ETC
* Section
** Frame (beamer_act, not quite right)
*** The problem on this frame
I want Block 1 and Block 2 to occupy the same space on successive slides.
*** Block 1 :B_block:
:PROPERTIES:
:BEAMER_env: block
:BEAMER_ACT: 1
:END:
*** Block 2 :B_block:
:PROPERTIES:
:BEAMER_env: block
:BEAMER_ACT: 2
:END:
** Frame (using #+latex and \only)
*** This is a complete bloody hash.
There is no way to make \verb|\only2| come after \verb|\end{block}|.
#+latex: \only1 {
*** Block 1
#+latex: } \only2 {
*** Block 2
#+latex: }
Re: [O] Beamer export with \only overlays - how?
On Tue, Oct 08, 2013 at 11:41:36PM +0800, James Harkins wrote: Question: How does one use Beamer's \only command with blocks? (Successfully, with org-mode's beamer export, I mean.) I found in the manual that you can give an overlay specification using the BEAMER_ACT property... ok... but that's not the same as \only because, when a latex chunk is marked \only1, it takes *no space* on 2-. Using 1 and 2 causes the 2 to appear lower than the 1. That's not what I want. Did you try this: http://orgmode.org/worg/exporters/beamer/ox-beamer.html#environments-overlay -- Suvayu Open source is the future. It sets us free.
Re: [O] Beamer export with \only overlays - how?
Suvayu Ali fatkasuvayu+linux at gmail.com writes:
On Tue, Oct 08, 2013 at 11:41:36PM +0800, James Harkins wrote:
Question: How does one use Beamer's \only command with blocks?
(Successfully, with org-mode's beamer
export, I mean.)
I found in the manual that you can give an overlay specification using
the BEAMER_ACT property... ok... but that's not the same as \only
because, when a latex chunk is marked \only1, it takes *no space* on
2-. Using 1 and 2 causes the 2 to appear lower than the
1. That's not what I want.
Did you try this:
http://orgmode.org/worg/exporters/beamer/ox-beamer.html#environments-overlay
My example file uses BEAMER_ACT, so yes, I did try that. Here's what happens
if I try it with \only1.
#+LANGUAGE: en
#+OPTIONS: H:2 num:t toc:t \n:nil @:t ::t |:t ^:t -:t f:t *:t :t ':t
#+OPTIONS: TeX:t LaTeX:t skip:nil d:nil todo:t pri:nil tags:not-in-toc
#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+startup: beamer
#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation]
#+BEAMER_THEME: default
#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_act(Act) %4BEAMER_col(Col)
%8BEAMER_opt(Opt)
#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.0 :ETC
* Section
** Frame (beamer_act, not quite right)
*** The problem on this frame
I want Block 1 and Block 2 to occupy the same space on successive slides.
*** Block 1 :B_block:
:PROPERTIES:
:BEAMER_env: block
:BEAMER_ACT: \only1
:END:
*** Block 2 :B_block:
:PROPERTIES:
:BEAMER_env: block
:BEAMER_ACT: \only2
:END:
--
\begin{block}\only1{Block 1}
\end{block}
Where the correct syntax would be:
\only1{
\begin{block}{Block 1}
\end{block}
}
So in short, no, that doesn't help.
I'm getting the uncomfortable feeling that this is a use case that org just
doesn't support as yet.
Actually, reading further in the beamer user guide, I noticed last night
that what I really want is \overlayarea, e.g.:
\begin{overlayarea}{\textwidth}{3cm}
\only1{Some text for the first slide.\\Possibly several lines long.}
\only2{Replacement on the second slide.}
\end{overlayarea}
Unfortunately \overlayarea is not supported as a BEAMER_env:
*** dummy :B_overlayarea:
:PROPERTIES:
:BEAMER_env: overlayarea
:BEAMER_envargs: {\textwidth}{3cm}
:END:
There's no \begin{overlayarea} or \end{overlayarea} anywhere in the exported
code.
Oh, forgot: org-version says Org-mode version 8.2 (release_8.2-1-g025bb7 @
/home/dlm/share/org-mode.git/lisp/).
hjh
