On Mon, May 27, 2019 at 2:21 PM Eli Zaretskii <e...@gnu.org> wrote: > I cannot figure out in what units are these values reported, or how to >
The meaning is left to the client. > control those units (if they are under the client program's control). > They are controlled mainly using hb_font_set_scale(). > 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. 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(). -- behdad http://behdad.org/
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