RE: [ft-devel] Force PMingLiU like font do HINTING

[Sergey Tolstov]

Hello,

How is it possible to decide from the font it is unusable with
FT_LOAD_NO_HINTING?

Thank you,
Sergey Tolstov 

> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On Behalf
> Of Werner LEMBERG
> Sent: Thursday, December 04, 2008 12:06 AM
> To: address@hidden
> Cc: address@hidden
> Subject: Re: [ft-devel] Force PMingLiU like font do HINTING
> 
> 
> > The "tricky" fonts like PMingLiU need unpatented hinting.  Those
> > fonts are unusable at all when programmers accidently turns on
> > FT_LOAD_NO_HINTING.  So I think freetype should force fonts like
> > those to ignore FT_LOAD_NO_HINTING.
> 
> This is a fundamental question.  My opinion is that shifting of glyph
> elements using TrueType instructions clearly is (a kind of) hinting.
> In other words, I don't like to change the current behaviour of
> FreeType without good reasons.
> 
> However, it might be helpful if FreeType emits a warning message that
> the font is probably unusable.  Hmm.
> 
> Opinions, please.  Maybe most of you disagree, so please chime in.
> 
> 
> > And detecting of tricky font should be outside of this defines:
> >
> >     #if defined( TT_CONFIG_OPTION_UNPATENTED_HINTING    ) && \
> >         !defined( TT_CONFIG_OPTION_BYTECODE_INTERPRETER )
> >
> > otherwise, the fonts are not detected on my debian box.
> 
> This is probably fixed already in the CVS:
> 
>   2008-11-05  Werner Lemberg  <address@hidden>
> 
>     * devel/ftoption.h, include/freetype/config/ftoption.h
>       [TT_CONFIG_OPTION_BYTECODE_INTERPRETER]: Undefine
>       TT_CONFIG_OPTION_UNPATENTED_HINTING.  This fixes the return
>       value of `FT_Get_TrueType_Engine_Type' (and makes it work as
>       documented).  Reported in bug #441638 of bugzilla.novell.com.
> 
> Please test.  Otherwise, please report the vales of those two macros
> on your box.
> 
> 
>     Werner
> 
> 
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