Re: gtk arabic colorings

["Mete Kural" <metek at touchtonecorp dot com>]

Hello Ahmed,

Meor might be able to provide some insight for you. He has been experimenting this feature with some rendering engines and I think Pango is one of them too. Meor, did you get the seperate coloring to work in Pango also or was it just uniscribe?

Thanks,
Mete

---------- Original Message ----------------------------------
From: Ahmed El-Helw <ahmed at piousity dot net>
Reply-To: Development Discussions <developer at arabeyes dot org>
Date:  Tue, 9 Aug 2005 21:44:56 -0400

>alsalam 3ala man itaba3 al huda -
>hope everyone is doing well.  i have been stuck for a while on this  
>issue
>and was wondering if anyone could suggest how to get this to work.  i am
>trying to write a tajweed highlighting engine... in order to do so, i  
>need to
>be able to color certain letters in an ayah a different color.
>
>the problem i am having is getting this to properly render in gtk.
>i've tried two different approaches:
>
>1. making two identical TextTags with nothing differing except the  
>colors,
>2. playing around with pango_parse_markup() and, for instance,  
>GtkLabels to
>     see if i could get anything to work.
>
>with the first, i had total failure - the letters would come out  
>separated [ie the shaping
>would break].
>
>with the second, it depends on what i did - if, for instance, i just  
>did color span of the
>first half the string to be blue and that's it, it appeared to  
>perhaps work fine [i say it
>"appeared to work fine" b/c at that size, its hard to really tell  
>whether they are two
>separate letters or are connected to each other, but they seem  
>connected but am not
>totally sure on that] -- but when i tried making the font larger, you  
>could clearly see shaping broken.
>
>i tried to email owen and ask him, and his response a few months ago  
>was that it was
>working as far as he knew and if i could write a c demo showing it to  
>submit a bug to
>bugzilla - i've done so recently and emailed him, but i take it he's  
>really busy and so
>hasn't gotten a chance to write back.  in addition, ppl on the gtk- 
>app-devel list didn't
>answer either.
>
>if anyone can give me any sort of tip would be greatly appreciated.
>thanks,
>-ahmed
>
>

--
Mete Kural
Touchtone Corporation
714-755-2810
--