Re: Emacs, colors and gdk-pixbuf.

["Jan D." <jan.h.d@swipnet.se>]

söndagen den 13 april 2003 kl 22.31 skrev David Kastrup:

> "Jan D." <jan.h.d@swipnet.se> writes:
>
>> Some time ago there was some discussion about improving image and
>> color handling in Emacs.
>
> Meaning that I said "oh this sucks so bad, can't be do something
> about it?".  And of course the easiest way out is to use existing
> code that sucks less.  There is a disadvantage of course: it is not
> nice if the only Emacs that offers reasonable performance and
> semantics for images and colors is the GTK version.  There are two
> answers to that:

It is quite possible to use gdk-pixbuf with other toolkits.  I made all
my tests with Lucid to make sure.


> a) other toolkits usually should also have their own favorite ways of
> dealing with the same problem, so one could try shifting work load
> more into the toolkits if that is found to be the case.
>
> b) the generic Emacs code for handling the stuff gets an overhaul.


>> First, gdk-pixbuf is inherently single displayed.  This means that
>> Emacs would be limited to one display.  Since GTK also is
>> single-displayed (perhaps not 2.2, there has been talk about some
>> changes, I haven't checked this yet), we could make gdk-pixbuf the
>> default for GTK.
>
>> From the release announcements:
>
>     GTK+-2.1.5 is now available for download at:
>
>      ftp://ftp.gtk.org/pub/gtk/v2.1/
>
>     This is the final prerelease before GTK+-2.2. The major
>     change as compared to the stable GTK+-2.0.6 is support for
>     multiple displays and multiple screens in GDK, although there are
>     numerous minor changes as well.

Unfortunately, this does not apply to the X11 rendering part of
gdk-pixbuf.  It is still single display only.


> Since Emacs is potentially multiheaded (see, for example, the
> talk-connect function), it would probably be better if the GTK port
> followed suit where possible and supported.

I will add that eventually.

	Jan D.