Re: redraw of screen

[Steve Hankin <hankin@xxxxxxxxxxxxx>]

Hello Zelle,

The redrawing that you are seeing presumably indicates that the X server
you are working on has Backing Store turned OFF.  This means that exposure
events are sent back to the client (Ferret).  I am working from a
network-connected PC, myself, using Hummingbird eXceed for my X server
(with Backing Store ON), and I do not see the redraws that you are
describing unless I grab the corner of the Ferret output window and resize
it.  (Resize events do have to be handled by the client.)

    - steve

=================================================

Hein Zelle wrote:

> (Apologies if this message should arrive twice, I tried to send it
> before from a different machine but it doesn't seem to have been sent
> around)
>
> Hello,
>
> I've recently been working on a slower workstation (i.e. not so
> incredibly fast as the one I have at work) and noticed that the screen
> redraws Ferret performs can get very bothersome. If you have a plot
> which takes a while to draw (high resolution fill) it may take half a
> minute before you get control back: Ferret does a redraw every time
> the window moves, changes focus or another window is moved away from
> above it. While it is drawing I cannot type anything in the Ferret
> window.
>
> Is there a way to prevent ferret from redrawing all the time, or
> to make it so that I have to explicitly request a redraw? Are there
> plans to make a caching system within Ferret so the redraws happen
> from a memory bitmap instead of redrawing the whole plot?
>
> Thanks,
>         Hein Zelle
>
> >-----------------------------------------------------------------<
>     Hein Zelle
>     Dept. of Oceographic Research
>     KNMI, The Netherlands
>     work:        zelle@knmi.nl     http://www.knmi.nl/~zelle
>     private:     hein@icce.rug.nl  http://www.icce.rug.nl/~hein
>     Phone:       +31 (0)30 2206704
> >-----------------------------------------------------------------<
> --------------------------------------------------------------
> Zie ook/see also: http://www.knmi.nl/maildisclaimer.html

--
Steve Hankin
NOAA/PMEL, 7600 Sand Point Way NE, Seattle, WA 98115-0070
ph. (206) 526-6080 -- FAX (206) 526-6744