I've been growing fond of using inkscape for drawing content for my slides. Figures, sequence diagrams and weird charts all end up going through inkscape, either drawn from scratch or just for some graphical fixes before they end up on the final slides.
So for some time now I've been searching for a way to make my slides directly from inkscape instead of using OpenOffice. I'm unhappy with Powerpoint like apps because these days slides are mostly design work rather than random bullet point sorting (Presentation Zen anyone?), and as such drawing programs are more suited for this task.
Having said that, I started to work on some python scripts to sort, convert and glue together multiple SVG files, and them abandoned them when I found a much better solution called InkscapeSlide. InkscapeSlide is tiny python script that converts several layers in a SVG file into multiple slides for a PDF. The creation process goes more or less like this: first you create multiple layers in inkscape, you can have as many layers per slide as you want. I usually put the background in one layer and then use one layer per slide in the presentation. Finally you create a layer called "content" with a text label that will map the layers into slides and run InkscapeSlide.
The content layer
InkscapeSlide relies on the SVG having a layer named "content" with a single text label. The content of this label maps the multiple layers into slides, each line in the label creates one slide with one or more layers:
title background, content +bullet1 +bullet2 +bullet3 background, questions * 0.5
This example would create 6 slides. The first slide is made of a single layer 'title'; The second uses two layers 'background' and 'content', this allows us to set a template layer with elements that show up on all slides; The slides 3,4,5 are incremental, the '+' sign means the previous slide plus; the last slide is similar to the second except it sets the "questions" layer to have an opacity of 0.5.
Running InkscapeSlide is as simple as issuing the following command in the console:
$ inkscapeslide slides.svg
The command will generate a pdf with the slides, or fail if the content layer does not exist. Be careful to check the result tough, because InkscapeSlide wont complain about missing layers.