Yes the unicode callback are all set and good. Not sure about the version. Its the one you released in early september. I think 10 september. <div class="gmail_quote">On Fri, Oct 26, 2012 at 2:57 AM, Behdad Esfahbod <<a href="mailto:behdad@behdad.org" target="_blank">behdad@behdad.org</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Do you have Unicode callbacks set up properly? What version are you using? <div class="im"> On 12-10-25 02:44 PM, Samiullah Khawaja wrote: > Figured it out, Previously i was confused with the x_offset and y_offset > always zero. But then found that it is something that is added after the > bearings (Had to get this info by debugging the harfbuzz code all the way down > to the position formats and x_offset and y_offset calculation). > > My text rendering is good now. But for some fonts the NSM are not detected and > their advance is not zero. For example the Traditional Arabic font in Windows. > > Another thing that I have a font that has GDEF table missing (I found this > after debugging through harfbuzz code), due to this harfbuzz does not do > substition, any hints? > > On Fri, Oct 26, 2012 at 12:47 AM, Behdad Esfahbod <<a href="mailto:behdad@behdad.org">behdad@behdad.org</a> </div><div class="im">> <mailto:<a href="mailto:behdad@behdad.org">behdad@behdad.org</a>>> wrote: > > > > On 12-10-25 12:47 PM, Behdad Esfahbod wrote: > >> > Are these values 16.16 fractional values or 26.6 fractional values? > > Depends on what you set in hb_font_set_scale(). Whatever value you set > there > > will represent on em-square. Up to you to interpret what the number means. > > Though, for hb-ft, they mean 26.6 indeed. > > behdad > > > > > -- > Samiullah Khawaja > Software Engineer </div>> email: <a href="mailto:sami.khawaja@gmail.com">sami.khawaja@gmail.com</a> <mailto:<a href="mailto:sami.khawaja@gmail.com">sami.khawaja@gmail.com</a>> > voice: <a href="tel:%2B%2892%29%200321-4184324" value="+923214184324">+(92) 0321-4184324</a> </blockquote></div> <div> </div>-- Samiullah Khawaja Software Engineer email: <a href="mailto:sami.khawaja@gmail.com">sami.khawaja@gmail.com</a> voice: +(92) 0321-4184324