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From: | Parth Wazurkar |
Subject: | Re: [ft-devel] Contribution to freetype |
Date: | Fri, 16 Mar 2018 04:50:59 +0530 |
ParthRegardsThank YouThank you for the reply, now I have understood where I was going wrong.OkSeems like I messed up some things.
I will work on that and get back soon.On Wed, Mar 7, 2018 at 9:01 PM, Werner LEMBERG <address@hidden> wrote:
> I am thinking of some possible ways in providing multiple font
> support,
What exactly do you mean with `multiple font support'?
> first one can be to use the available converters for conversion of
> font formats, the second one can be to use the Freetype approach by
> modifying `FT_DRIVER_H`, `FT_OPEN_DRIVER` to support the tex font
> drivers as well, another can be the VFlib approach i.e to define a
> new font database file on the lines of vflibcap and then using the
> Kpathsea library for searching TEX fonts.
>
> I ruled out the first one as we must convert many font files in
> advance and also we don't have converters available for all types of
> fonts.
OK (but I don't know exactly to what it refers).
> I am currently more inclined towards the VFlib approach.
You mean something like `vflibcap'? I think this is the wrong
approach. Please bear in mind that FreeType is a font rendering
engine, working at the lowest level – actually, there is no other
font-related library on a lower level (in a font stack that uses
FreeType, that is).
`vflibcap', for example, provides a much higher-level access to fonts;
it handles kpathsea issues, encoding conversion files, etc., etc. All
this stuff doesn't belong to FreeType.
FreeType takes a font file, opens it, selects a glyph, and rasterizes
it. That's it! And such low-level functions the GSoC project should
provide. The exception is VF files, which probably needs a new
interface: For example, a new function could return a list of the
necessary `raw' fonts (in TeX speak). An alternative could be a
callback function that receives a font name and returns a handle to
FreeType. This is what a GSoC student should research.
Werner
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