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Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 - anewsnapshot
From: |
Sergey Babkin |
Subject: |
Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 - anewsnapshot |
Date: |
Thu, 12 Oct 2000 19:50:20 -0400 |
Werner LEMBERG wrote:
> > When I start looking through the table of encodings in
> > a Type1 (.pfa font) like this:
> >
> > for(e=0; e < face->num_charmaps; e++) {
> > fprintf(stderr, "found encoding pid=%d eid=%d\n",
> > face->charmaps[e]->platform_id,
> > face->charmaps[e]->encoding_id);
> > }
> >
> > I find two tables:
> >
> > found encoding pid=3 eid=1
> > found encoding pid=7 eid=2
> >
> > I don't know what's the platform 7 but pid=3/eid=1 is Unicode.
>
> You should rather use face->charmaps[e]->encoding which will return
> things like `ft_encoding_unicode' or `ft_encoding_adobe_expert'.
> Don't rely on the order of returned pid/eid values! There is no
Ah, OK.
> preference. BTW, platform 7 is an artificial value (invented for
> FreeType) meaning `Adobe'.
Thanks for information. It does not have any definition in the
FreeType headers.
> > Well, I think I see the reason for using Unicode: if the font
> > contains more than 256 glyphs but the glyphs have proper names then
> > they may be mapped to Unicode. But if the glyph names are strange
> > then this stuff does not work. The thing that would work for fonts
> > with a customized encoding tables is the Symbol encoding, with
> > pid=3/eid=0.
>
> The pair (7,2) is ft_encoding_adobe_custom, and this is exactly what
> you are asking for.
>
> I'm in the process of revising the tutorials so that I can fix that.
Thanks, that would make things more clear.
> > I would suggest a simple heuristic [...]
>
> Look into the files in the directory src/psnames. We believe that
> this module does already this job.
Apparently it does, after you explained how to understand the
data from it :-)
> > > > Also I think it would be good if some other typical variables
> > > > such as version string or copyright notice would be accessible
> > > > in a format-indepent way, without using *Sfnt*.
> > >
> > > Indeed. The very question is whether FreeType should do that or a
> > > library on top of FreeType.
> >
> > Is not one of FreeType's goals placing all these various font
> > drivers under it and being an universal interface? Or am I missing
> > something?
>
> You've probably misunderstood me. The question is whether accessing
> this kind of info is low-level enough to be part of FreeType or
> whether it should be put (with a universal interface, of course) into
> a yet-to-be-written Text Layout engine. Another problem is which
Yes, probably I'm missing something here.
> information shall be returned? Some font formats have absolutely no
> additional info, others have plenty of it...
Why not make provisions for all the reasonable information, and then
if the font format does not support a particular variable just
return a special value "not available" ?
-SB
- Re: FT_Get_Char_Index() returns 0 for char(0x020), (continued)
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Tom Kacvinsky, 2000/10/15
- FT_Get_Char_Index() and platform_id = 7; encoding_id = 2, Tom Kacvinsky, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Tom Kacvinsky, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Werner LEMBERG, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Tom Kacvinsky, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Werner LEMBERG, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Tom Kacvinsky, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Werner LEMBERG, 2000/10/16
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Just van Rossum, 2000/10/15
- Re: FT_Get_Char_Index() returns 0 for char(0x020), Tom Kacvinsky, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 - anewsnapshot,
Sergey Babkin <=
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 - anewsnapshot, Werner LEMBERG, 2000/10/13
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1, Sergey Babkin, 2000/10/14
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1, Stefan Seefeld, 2000/10/14
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1, Werner LEMBERG, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1, Stefan Seefeld, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1, Werner LEMBERG, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 -anewsnapshot, Sergey Babkin, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 -anewsnapshot, Werner LEMBERG, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 -anewsnapshot, Sergey Babkin, 2000/10/15
- Re: [ttf2pt1-devel] Re: FreeType front-end in ttf2pt1 -anewsnapshot, Werner LEMBERG, 2000/10/15