> From: Behdad Esfahbod <beh...@behdad.org> > Date: Mon, 27 May 2019 21:21:10 -0400 > Cc: "harfbuzz@lists.freedesktop.org" <harfbuzz@lists.freedesktop.org> > > control those units (if they are under the client program's control). > > They are controlled mainly using hb_font_set_scale().
What happens if hb_font_set_scale is not called? Is there some kind of default? > In particular, I get a huge value of x_advance for the letter U+05EA > HEBREW LETTER TAV when it is followed by U+05BB HEBREW POINT QUBUTS. > The value of x_advance I get is 1229, which is too large even after > dividing by 64 (which, btw, I still am not sure is TRT in my case, > > FreeType works in 26.6 fixed-point, ie. 64 units per 1.0. That's where the > 64 value comes from. And you > don't see it in your code because hb_ft_font_create* sets that on hb_font for > you. hb_ft_font_create is not used in the Windows code, because the Windows code doesn't use Freetype to open and otherwise manipulate fonts. > In your Windows code, you should call hb_font_set_scale(). I believe right > now you are *not* calling, and you > get values in the face's UPEM. That's the default scale for fonts. You can > get the face UPEM using > hb_face_get_upem(). OK, thanks, I will look into this. _______________________________________________ HarfBuzz mailing list HarfBuzz@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/harfbuzz
