Hi, I think I addressed the kerning issue. There are hinting issues outstanding that I need to address later.
behdad On 04/20/2012 09:16 AM, Petr Filipský wrote: > Hi, > I am trying to perform a shaping which is independent on a resulting device, > so no scaling, no grid-fitting is desired. > > In order to disable the grid-fitting and get as high precision as possible I > thought it was sufficient to work in the font design precision - to scale the > font to some very high value (like the /UpEm/ value), i.e. using the following > code: > > / hb_face_t* const face( hb_ft_face_create( ft_face, NULL ) );/ > / hb_font_t* font = hb_font_create( face );/ > / unsigned int const upem( hb_face_get_upem (face) );/ > / hb_font_set_scale( font, upem, upem );/ > /hb_ft_font_set_funcs( font );/ > > But unfortunately it is not enough. The /hb_ft_get_glyph_h_kerning()/ function > calls the /FT_Get_Kerning/ with kerning mode set to /FT_KERNING_DEFAULT/, and > for example for /Arial font/ and /'T'/ and /'a'/ character pair (55 and 68 > glyph indices) it returns value -256 (instead of correct value -227). It if > the scaling seems correct the function still performs some fitting. If i try > to change the kerning mode to FT_KERNING_UNSCALED then I get the correct value > (-227) but that is probably not a proper fix but just a hack. > > Is there an elegant and efficient way to disable both scaling and fitting and > perform a device independent full precision shaping? > > Thank you very much. > > Kind regards, > Petr > > > > > _______________________________________________ > HarfBuzz mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/harfbuzz _______________________________________________ HarfBuzz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/harfbuzz
