Re: [Vala] Rewriting GLib C code in Vala

[Dmitry Golovin <dima golovin in>]

Thanks for your interest.

This turned out to be a bit more complicated than I expected.

I will go through your references and complete cogl-crate soon.

The new home for vapi is now here: http://blog.golovin.in/vala-cogl/vapi/
I also generated valadoc for it: http://blog.golovin.in/vala-cogl/doc/

I hope, there are people interested in it.

If you can compile and test the examples on different systems, please do. I want to receive some feedback on 
how cross-platform cogl really is.
I have already tested it on GNU/Linux+Xorg, GNU/Linux+Wayland and M$ Windows (not impressed).

Regards,
Dmitry

24.07.2015, 14:33, "Al Thomas" <astavale yahoo co uk>:
> >  From: Dmitry Golovin <dima golovin in>
> >  Sent: Friday, 24 July 2015, 10:04
> >  Subject: [Vala] Rewriting GLib C code in Vala
> >
> >  I'm now transfering Cogl examples to Vala:
> >  https://github.com/tpimh/vala-cogl
>
> Interesting stuff. I also like the reference you've
> found where someone has written an image viewer in
> Genie :-) ( http://onagat.hatenablog.com/ )
>
> >  I'm a GLib newbie, so I need help with rewriting cogl-crate example:
> >  https://github.com/GNOME/cogl/blob/master/examples/cogl-crate.c
> >
> >  I don't fully understand what PollFD is and what function in Vala GLib
> >  binding should be used for g_poll.
>
> It is an event descriptor. From
> https://developer.gnome.org/cogl-2.0-experimental/stable/cogl-2.0-experimental-Main-loop-integration.html
> it is deliberately the same as the Unix pollfd struct ( http://www.valadoc.org/#!api=posix/Posix.pollfd )
> So it may help if you look for Vala examples with that.
>
> I understand you are trying to replicate the example exactly, but as
> you progress you may want to read
> https://developer.gnome.org/cogl-2.0-experimental/stable/cogl-2.0-experimental-Main-loop-integration.html
> if you haven't already. This is suggesting using cogl_glib_source_new()
> to get a GSource event source that can then be integrated with GLib.MainLoop
>
> Some references:
> https://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html
> http://valadoc.org/#!api=glib-2.0/GLib.MainLoop
> https://wiki.gnome.org/Projects/Vala/AsyncSamples
> https://sigquit.wordpress.com/2010/01/05/g_source_unref-and-g_source_destroy-are-your-friends/
> http://stackoverflow.com/questions/21434669/creating-a-new-gsource-in-glib
> https://tecnocode.co.uk/tag/gsource/
>
> >  You can find relevant vapi here:
> >  https://github.com/tpimh/vala-cogl/blob/master/vapi/cogl-2.0.vapi
>
> Thanks, I will add this to the list of bindings wiki page
> ( https://wiki.gnome.org/Projects/Vala/ListOfBindings )
>
> Al
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