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[O] [beamer] When are :BEAMER_envargs: used or ignored?
From: |
James Harkins |
Subject: |
[O] [beamer] When are :BEAMER_envargs: used or ignored? |
Date: |
Mon, 27 Feb 2012 15:07:45 +0800 |
User-agent: |
Wanderlust/2.15.6 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (Gojō) APEL/10.7 Emacs/23.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) |
According to the online documentation [1], it seems that :BEAMER_envargs:
should apply to all Beamer environments:
~~~
BEAMER_envargs
The beamer-special arguments that should be used for the environment, like
[t] or [<+->] of <2-3>. If the BEAMER_col property is also set, something like
C[t] can be added here as well to set an options argument for the implied
columns environment. c[t] or c<2-> will set an options for the implied column
environment.
~~~
This does work in the example presentation at [1], but it seems only for
B_block entries. I was trying to use B_beamercolorbox, where presumably the
color selections (fg=, bg=) should be environment arguments, but this is
ignored. What's more, if I take the colors out of the color box's envargs and
replace it with another argument syntax -- <2-> -- that definitely works with
B_block, this is also ignored. So it seems, if you wanted to have a colorbox
appear in a later overlay, you would be screwed (would have to write the LaTeX
by hand).
A bit confused.
Or, the simple question -- how do you set the colors of a color box in Beamer
export?
Oh, wait, I just figured it out... though you would have to admit, this is not
remotely obvious.
** Frame 2 \\ where we will not use columns
#+LaTeX: \setbeamercolor{ybg}{bg=yellow}
*** ybg :B_beamercolorbox:
Please test this stuff!
:PROPERTIES:
:BEAMER_env: beamercolorbox
:END:
It kind of strikes me like an epic hack: you have to name the headline after
the Beamer color ID, instead of naming the headline after the content... not
very /org/anized.
Worth a bug report or feature request?
hjh
[1] http://orgmode.org/manual/Beamer-class-export.html
--
James Harkins /// dewdrop world
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http://www.dewdrop-world.net
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Sing me a song no poet has yet chanted,
Sing me the universal." -- Whitman
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