On Fri, Aug 30, 2013 at 11:31 PM, Josh Hieronymus <josh.p.hierony...@gmail.com> wrote: > Hi everyone, > > I'm working on exporting LyX documents to EPUB as part of my Google Summer > of Code project, and I'd like to invite you to try out my current > implementation, which can be found in the "epub/master" branch of the gsoc > repository (g...@git.lyx.org:gsoc.git). The export process begins by > exporting the document to XHTML via LyXHTML, then converting the XHTML to > EPUB with the scripts in lib/scripts/epub.
I'm not an EPUB user so I cannot test unfortunately. > - Extracting other metadata fields from the document. The required fields > are language, title, and identifier. The title field is taken from the > document, but not the language or the identifier. I'm taking the title from > the first paragraph to use the "title" inset, but there aren't corresponding > insets for the other elements, so I'm not sure of the best way or ways to > get the rest of the info. (There's an inset for author, but the author name > is needed in both reading order and "file-as" order, and there's only one > author inset.) One thought is to create custom insets, and another is to ask > for the information via the document settings. In my opinion, language should be taken from the document settings since it is already a setting. I think for other fields such as author this should be taken from an inset defined by the module/layout. But this might be because I don't know anything about EPUB. Can I export any document in LyX to EPUB with your method? I would just export from the file menu? Or do I have to first add a module? Perhaps an extra "EPUB fields" module could be useful in which the necessary (author name) and optional fields are implemented with custom insets. > What I'd like to implement at some point: > - optional conversion of images to SVG format > Note: Vector-based graphics scale better than raster-based graphics, making > them well-suited for electronic media. > Note: EPUB specifications require compliant e-readers to support SVG. > Note: Older versions of some browsers (primarily IE) don't support SVG. > Note: Preliminary searches turn up a package named dvisvgm > (http://www.ctan.org/pkg/dvisvgm) that converts DVI to SVG, and it's > licensed under the GPL v3 or later. > - ability to split large XHTML files into smaller ones > Note: Splitting large XHTML files should boost the performance of the > converted EPUB documents. > - allow selection of an image for front cover artwork > Note: Amazon requires JPEG or TIFF format for front cover artwork. Thanks for this information. What about EPS/PDF? What are their advantages/disadvantages versus SVG? Scott
