java-gnome-developer

[Java-gnome-developer] 'g_idle_add' and 'g_timeout_add' equivalents?

[Ernst B. <ern...@gm...>]

Hi,

I'm a student and for a project, I have to port a program written in C++ to
Java. In that program, two calls are made: 'g_idle_add' and 'g_timeout_add'
(see
http://library.gnome.org/devel/glib/unstable/glib-The-Main-Event-Loop.html).
Does java-gnome have those functions? I can't find them in the API. Or is it
possible to implement those features in a different way?
Thanks for your help :-)!

Ernst

Re: [Java-gnome-developer] 'g_idle_add' and 'g_timeout_add' equivalents?

[Serkan K. <se...@ge...>]

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g_timeout_add can be done with Timer's and TimerTask's which are
available in standard Java.

- --
Sincerely,
Serkan KABA
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Re: [Java-gnome-developer] 'g_idle_add' and 'g_timeout_add' equivalents?

[Ernst B. <ern...@gm...>]

Thanks for your fast answer :-). I will look into that, as I'm not very
familiar with Threads. But, it seems is not very difficult for my
application.
One question about a thread: how do I 'synchronize' the interface with the
updated info from the Thread? Do I have to call cr.paint() once every second
or so? Can this be done from the other thread?
Thanks again,
Ernst

On Tue, Jun 9, 2009 at 01:00, Andrew wrote:

> On Mon, 2009-06-08 at 17:02 +0200, Ernst Blaauw wrote:
> > is it possible to implement those features in a different way?
>
> Yes. Just use a Thread.
>
> AfC
> Sydney
>
> --
> Andrew Frederick Cowie
>
> Operational Dynamics is an operations and engineering consultancy
> focusing on IT strategy, organizational architecture, systems
> review, and effective procedures for change management: enabling
> successful deployment of mission critical information technology in
> enterprises, worldwide.
>
> http://www.operationaldynamics.com/
>
> Sydney   New York   Toronto   London
>

Re: [Java-gnome-developer] 'g_idle_add' and 'g_timeout_add' equivalents?

[Andrew C. <an...@op...>]

On Tue, 2009-06-09 at 10:23 +0200, Ernst Blaauw wrote:

> One question about a thread: how do I 'synchronize' the interface with
> the updated info from the Thread? Do I have to call cr.paint() once
> every second or so?

No, nothing so gauche.

If you're using GTK, just call methods on Widgets as normal. They will
generally queue a redraw internally. These will accumulate and then
turn-up on screen as soon as the main loop cycles and their
expose-events happen.

> Can this be done from the other thread?

Yes.

Though not the point of the example, you can see this in action in
ExampleInstantMessenger. [1]

And in the update thread in Slashtime, come to think of it. [2]

AfC
Sydney

[1]: http://java-gnome.sourceforge.net/4.0/doc/examples/textview/ExampleInstantMessenger.html
[2]: http://research.operationaldynamics.com/projects/slashtime/