Re: eot embedded fonts

Thanks Lubos

I should clarify, I already have an eot->ttf converter working; proof
positive that MS and Monotype's documentation is sufficient :). I just need
to clean up the code, write some unit tests, etc. before I am comfortable
submitting it to LibreOffice.

I'll take a look at EmbeddedFontsHelper


On Tue, Aug 27, 2013 at 8:25 AM, Lubos Lunak <l.lunak@suse.cz> wrote:

> On Tuesday 27 of August 2013, Brennan T Vincent wrote:
> > Hi all,
> >
> > One of the most commonly-occurring problems with .pub import is the fact
> > that we don't respect embedded fonts. Now that LibreOffice supports
> > embedded fonts, it should be possible to make this work.
>
>  That depends. EOT is a Microsoft proprietary font format (which has been
> submitted to W3C, but AFAICT pretty much everybody else ignores it). There
> are tools to convert e.g. TTF fonts to EOT, but I couldn't find absolutely
> anything that'd convert from EOT and the only thing capable of at least
> reading it is MS Windows itself. As far as I understand it, the available
> documentation on it is unsufficient for implementing a reader if you'd
> decide
> it'd be worth the effort (I'm not entirely sure on this part, feel free to
> do
> your own research).
>
>  Here are some links that I found on the topic:
>
> http://blog.yezhucn.com/gdi/t2embed_TTLoadEmbeddedFont.htm
> http://www.pptfaq.com/FAQ00076_Embedding_fonts.htm
>
>
> http://graphicdesign.stackexchange.com/questions/16234/are-there-any-free-tools-to-convert-eot-files-to-ttf-otf-or-any-other-font-f
> http://www.w3.org/Submission/2008/SUBM-EOT-20080305/
> http://www.w3.org/Submission/2008/SUBM-MTX-20080305/
> http://lists.w3.org/Archives/Public/www-style/2008Apr/0227.html
> http://securitylabs.websense.com/content/Blogs/3114.aspx
>
> > A few questions:
> >
> > (1) Do we support Embedded OpenType fonts currently? (.eot)
>
>  No.
>
> > (2) If not (which I suspect), I can contribute some code to do this.
> > Microsoft and Monotype recently granted a perpetual, irrevocable free
> > patent and copyright license to implement the .eot format, so there
> should
> > be no legal issues. I have written a C library to convert from .eot to
> .ttf
> > and would like to know who to talk to in order to get this included in
> > LibreOffice.
>
>  Yes, adding support for export should be fairly easy, given that TTF->EOT
> conversion is possible, but that's the easier part and it doesn't really
> help
> LO much.
>
>  A kind of limited import support should be also doable, as the Windows
> TTLoadEmbeddedFont() function can load such a font for use (unlike the
> normal
> Windows function for opening fonts). See the attached hackish proof of
> concept patch. That'd make import of it Windows-only, unless you find a way
> to use EOT on other platforms. It'd also most probably require some changes
> in VCL's font handling, as I couldn't get the activated font listed among
> available fonts (which is what otherwise the current reading of embedded
> fonts does, it adds the new font temporarily in whichever way the
> underlying
> font system supports and then just uses it normally as if it was a system
> font).
>
>  There's a class EmbeddedFontsHelper in VCL that I created for handling
> embedded fonts, that should be the place to start if you want to give
> implementing this a try.
>
> --
>  Lubos Lunak
>  l.lunak@suse.cz
>
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