Re: example ligature code.

[David Tooke]

Thanks for a prompt reply.
Yes, I have looked at the ftstrtto source.  I wasn't able to get the string
rendered correctly specifying the liga feature either.

I am using the medi, fina, isol and init features.

The arabic I am displaying looks ok except for two characters (an ALEF and a
LAM, if your interested.) ... as I understand it, the glyphs that are being
displayed appear as a character that kind of looks like a U, whereas they
should display as a ligature that looks kind of like a ornate, reversed K.

I am applying the "liga" feature to ALL_GLYPHS and doing a
TT_GSUB_Apply_String, I am expecting the ligature substitution to occur
there.   But only the substitutions for the other features occur.

----- Original Message -----
From: "David Turner" <address@hidden>
To: "David Tooke" <address@hidden>
Cc: <address@hidden>
Sent: Friday, July 21, 2000 11:01 AM
Subject: Re: example ligature code.


Hello,

> David Tooke a écrit :
>
> Does anyone have any example code demonstrating how to use the GSUB
extensions to handle ligatures?
>
> I am rendering some arabic using the arial font.   The text looks like it
should have a ligature substitution; but none is happening even though I
> am using the "liga" feature.
>
> I know I am doing something wrong, but I would grateful for any
assistance.
>
I believe that you need to use other features like "fina", etc.. for arabic.
Werner and Antoine would probably be able to answer more precisely on this..

Have you tried to display Arabic with Arial and the "ftstrtto" demonstration
program ? Have you read its source code ? Sorry if my question seems
stupid..

Regards,

- David

> Thanks in advance
>
> David
> address@hidden
>