[HarfBuzz] How to get hb_face_t and hb_font_t without Freetype?
behdad at behdad.org
Sat May 11 19:25:57 UTC 2019
On Sat, May 11, 2019 at 12:16 PM Eli Zaretskii <eliz at gnu.org> wrote:
> > From: Behdad Esfahbod <behdad at behdad.org>
> > Date: Sat, 11 May 2019 11:51:16 -0700
> > Cc: Jonathan Kew <jfkthame at gmail.com>,
> > "harfbuzz at lists.freedesktop.org" <harfbuzz at lists.freedesktop.org>
> > Not sure yet. What is a "font" for this purpose? Does it have to be
> > the full contents of a font file on disk?
> > Yes. The font file. Maybe describe what you are trying to do?
> I'm trying to use on MS-Windows the HarfBuzz shaping function for
> Emacs, which Khaled wrote. The code as written uses Freetype-specific
> data (FT_Face), and I'm trying to provide it with the Windows
> equivalents instead.
> As for passing the font file's data to hb_blob_create: it is quite
> unusual to manipulate physical font files on MS-Windows, the usual
> paradigm is to use a "logical font", which is a specification for a
> font, and then retrieve the metrics of the font using dedicated APIs.
> So I wonder whether there's an alternative to accessing the physical
> font files.
See what Jonathan said. That, and you can even implement Windows-backed
font-funcs. Several projects do that. Say, look at Qt maybe?
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