Re: XIM String Conversion Callback

[Theppitak Karoonboonyanan <thep links nectec or th>]

Referring to an old topic: Would there be a chance for this feature
to be realized?

Regards,
-Theppitak.
-- 
Theppitak Karoonboonyanan
Information Research and Development Division, NECTEC
http://www.links.nectec.or.th/~thep/  mailto:theppitak nectec or th

On Wed, Jan 03, 2001 at 10:55:52AM -0500, Owen Taylor wrote:
> 
> Theppitak Karoonboonayanan <thep links nectec or th> writes:
> 
> > Hello,
> > 
> > Now I am working on a Thai XIM, which needs context-sensitive input
> > sequence check. (The need to restrict the input sequence was once discussed
> > when we talked about Thai rendering in Pango.) To do the job, I have been
> > pointed to the String Conversion Callback of the XIM for accessing the
> > application's buffer. And that needs the XIM client to call XSetICValues()
> > with XNStringConversionCallback key. But I don't find such code in GDK 1.2.8.
> >
> > So, the question is: has the callback be supported any where in GTK+?
> 
> GTK+-1.2 does not support XNStringConversionCallback.
> 
> GTK+-1.3 also does not include support for context and recoversion
> yet, though that may change. There are two basic reasons why I did not
> add it initially:
> 
>  - It adds sigificant complexity, and I wanted to see if I could
>    avoid adding that complexity.
>  
>  - I don't understand either the Xlib interfaces or the problem very
>    well, so I didn't know exactly how to set it up.
> 
> Reconversion is especially tricky and I'm not sure it should be
> joined together with context.
>  
> 
> For getting context, my current idea of how it should look is:
> 
>  GtkIMContext should have a signal ::retrieve_context() which has parameters
>  indicating the desired context region.
> 
>  When the owner of the context (the GtkEntry, for example), gets this
>  signal, it should call:
> 
>   gtk_im_context_set_context (GtkIMContext *im_context,
>                               gint          position,
>                               gchar        *context_text,
>                               gint          length);
> 
>  Where position is the offset (in bytes, not including the 
>  preedit string) of the start of the context string from the cursor 
>  position.
> 
> Regards,
>                                         Owen
> 
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