Hey hackers, I am pleased to announce the first release of Guile-Present, version 0.1.0. It may be obtained at:
http://wingolog.org/pub/guile-present/guile-present-0.1.0.tar.gz What is Guile-Present ---------------------- Guile-Present is a library to make presentations with Guile Scheme. See http://wingolog.org/software/guile-present/ for more information. Since this is the first release, I'll explain a bit more here. I've been trying to avoid powerpoint-style applications for a while, especially OpenOffice. It's good for some people but it hurts my brain. After poking about for a while, I decided to make presentations with SVG graphics, with each layer being one slide. I wrote a tool (in Guile) to split the SVG file into layers, and then make a PDF out of that. However, the process was not satisfying: it was too hard to enter in the text, and I always had to think about alignment. I wanted to be able to make an SVG presentation programmatically. It turns out that the standard XML manipulation combinator, pre-post-order (available from guile-lib's packaging of ssax), is not well-suited to performing layout operations. This is because pre-post-order effectively maps across XML child elements instead of passing a layout seed. So I started looking how to recast pre-post-order as an extended tree fold (foldts from Oleg's SSAX paper). I wrote up the results in a paper that I submitted to SFP 2007, http://wingolog.org/pub/fold-and-xml-transformation.pdf. We'll see if it gets accepted, but in any case, Guile-Present is an application of the fold-layout operator presented there. (Guile-Present's fold-layout is slightly different, as it allows for external stylesheets.) In addition to the ability to render declarative SXML documents into SVG, Guile-Present can also parse files written in Emacs' Org Mode. So, you can write a presentation like this: --> * Slide title Some text * Bullet point * subpoint Foo ** Another slide ** Another.. <-- You get the idea. Guile-Present provides a command-line script to transform org-mode files into PDF presentations. The resulting presentations are clean but not pretty; I'd like to add more in that regard in the future (read: the next time I have to give a presentation). As a bonus, Guile-Present is completely documented! You have PDF, info, online help, etc. You can read it all from the web site. Well, that's that. Comments welcome. Happy hacking, Andy. -- http://wingolog.org/ _______________________________________________ Guile-user mailing list Guile-user@gnu.org http://lists.gnu.org/mailman/listinfo/guile-user
