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<== Date ==> <== Thread ==>

Subject: Re: FW: Next generation EPICS display manager
From: Zhichu Chen <zhichu.chen@gmail.com>
To: tom.cobb@diamond.ac.uk
Cc: tech-talk@aps.anl.gov
Date: Sat, 7 Nov 2009 08:46:19 +0800
Hi Tom,

I'm writing a display manager these days, and I have two options: Flex
or JavaFX.

Well, as the next release of Adobe AIR will support UDP, I'm thinking
maybe I'll focus on Flex AFTER the AIR 2.0 will be released. But right
now, my Flex uses CAJ/JCA, Tomcat and ActiveMQ as JMS, that's tooooo
complex.

JavaFX still uses CAJ/JCA, and that's all. His problem is more
personal: not as beautiful as Flex.

I'm really looking forward to the release of AIR 2 even although it
means that I should write a CA protocol for it.

On Fri, Nov 6, 2009 at 8:35 PM,  <tom.cobb@diamond.ac.uk> wrote:
> Hi all,
>
> Here at Diamond we've just started looking around at the EPICS display
> managers out there, with a view to eventually replacing our EDM GUIs
> with something a little more modern. So far we have been playing with
> Qt, and have a prototype with a small widget set that controls a
> firewire camera and displays an mjpg stream. However, I am aware that
> there are several Qt EPICS implementations out there, and I think it
> would be good to collaborate with another site on this to avoid writing
> yet another display manager.
>
> Our findings so far:
> * We've found PyQt and CA too slow in large GUIs, but would still like
> to generate the PyQt bindings for any new widgets so we have the option
> for some specialised screens
> * We've found that the designer is a very handy editor, and it's very
> convenient to be able to use ui files rather than having to compile
> screens
> * Qt's signal/slot mechanism and QVariant classes are very powerful, but
> we've yet to find a neat way to fit PV Names and channels into this
>
> I should also point out that we haven't ruled out other display
> managers, we have briefly looked at Control System Studio SDS, but have
> found the widget set a little small, and widgets written by other sites
> seem to lack a common look and feel, but we would like to hear from
> other sites about their experiences in this area.
>
> So my questions are:
> * Has anyone else out there written a recent display manager?
> * How mature is it and how complete is the widget set?
> * How complicated / large are the screens you have built with it, and
> what's performance like?
> * Would you be willing to collaborate on it?
>
>
> Many thanks,
>
> Tom Cobb,
> Diamond Light Source Ltd.
> Diamond House
> Harwell Science and Innovation Campus
> Didcot
> Oxfordshire
> OX11 0DE
> United Kingdom
> Tel +44 (0) 1235 778582
>
> --
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>
>
>
>
>
>



-- 
Best Regards
Chen
----------------------------------------------------------------

          Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
         No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China
             tel: 086 21 5955 3405 | zhichu.chen.googlepages.com
                                               | www.sinap.ac.cn
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FW: Next generation EPICS display manager tom.cobb

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