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[Orgmode] Re: Slides with Org

From: Rick Moynihan
Subject: [Orgmode] Re: Slides with Org
Date: Thu, 28 Aug 2008 11:32:44 +0100
User-agent: Thunderbird (Macintosh/20080707)

Sebastian Rose wrote:

Rick asked for Slides from Org-modes HTML export recently.
While there is no real support slides in org-info.js, I
still gave it try to have a poor mans slides.

The main missing thing was the ability to navigate the
section by clicking the window. This is now added and in
the worg git.

Please review and complain :-)

Before my 'complaints': Thanks a bunch, this is great!!! :-) The org-mode continue to amaze me!

So, after taking a look at your example the first thing that jumps out at me is the hack you've used to reveal individual bullet points one by one:

* Overview

  + Create the Org-mode file

* Overview

  + Create the Org-mode file
  + Export the Org-mode file to XHTML

* Overview

  + Create the Org-mode file
  + Export the Org-mode file to XHTML
  + Create a stylesheet for slides

Whilst this works, it doesn't seem entirely practical to duplicate the content like this, particularly in a larger slide stack. Could we use properties to control this? Reducing the previous outline to something like this:

* Overview
  :reveal:   t

  + Create the Org-mode file
  + Export the Org-mode file to XHTML
  + Create a stylesheet for slides

Another suggestion, would be to offer more control over the title heading. Currently it seems that the heading is always the #+TITLE: rather than the current slides heading. A more sensible default would be to render the slides title here, with an option to have it be the presentations title.

It also seems that the double-clicking/sensitivity when returning to a previous slide sometimes feels hard to perform. i.e. sometimes you click too slow and progress forward rather than back. This may or may not be something you have control over. As other's have suggested, supporting the back/forward keys and spacebar for flicking through slides would be nice too.

Another feature suggestion might be support for automated timings. Where after loading a presentation pushing a button sets it off with each slide being displayed for a specified time, according to an overidable default (in seconds) e.g.

#+INFOJS_OPT: timing:30

With overiding supported through property drawers:

* Example of timings (whole slide takes 20 seconds)
  :timing: 20
  :reveal: t

  + Wait on this point for 10 seconds
  + Wait on this point for 10 seconds then push onto next slide

Finally, if possible, perhaps a class property could be used to control which CSS class a slide is rendered with? This might allow better control over certain slides where, for example you *ONLY* want a large image to be displayed centred without a title etc...

As an aside, would it be possible to push org-info-js up into it's own git repo, with the slides example you posted? Checking it out through Worg is a mild pain, and it seems deserving of it's own repo.

For REAL slides a different tool should be written (using jQuery
or similar). Since slides are so different from 'normal' HTML, I
guess they would blow the scripts size. If I think of slides, I
think of efects.

Yes, effects and transitions would be a nice bonus and should be achievable through libraries like scriptaculous and jquery...

Thanks again for your hardwork!


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