Re: Pango without FreeType (or fontconfig)

[Behdad Esfahbod <behdad behdad org>]

Hi Lóránt,

On 14-08-28 09:26 PM, Lóránt Pintér wrote:
> Hi,
>
> I’m currently using HarfBuzz compiled to JavaScript via Emscripten with a
> custom (primitive) layout engine. I’d like to replace the custom layout engine
> with Pango (also compiled to JS) if possible. To do this, I’d need to be able
> to compile Pango with our custom JS font loading (which already works with
> HarfBuzz). Is this possible? If so, where should I start digging?

So, you are OK with the glib dependency?

Current versions of pango use a convoluted module system to choose shapers.  I
have a branch that removes most of that:

  https://github.com/behdad/pango/tree/kill-modules

After that, you need to implement a set of PangoFontMap / PangoFontFamily /
PangoFontFace / PangoFont subclasses since you don't want to use PangoFc.
This is rather straightforward, if you don't want much font fallback.

For the shaper part, modify pangofc-shape.c.  You just need access to the
hb_face and you can do the rest from there.

-- 
behdad
http://behdad.org/