[OpenLayers-Users] Image flickering in Firefox when changing the URL of an image layer

[Pedro Baracho]

Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.9.1.5) Gecko/20091102
Firefox/3.5.5 (.NET CLR 3.5.30729)

I don't see the flickering at all.

I used FF on Safe-mode too, without any complements loaded.

I could reproduce it on another computer with a different version of FF, and
same version of .NET
Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.9.0.15)
Gecko/2009101601 Firefox/3.0.15 (.NET CLR 3.5.30729)

Also, I used to have IE Tab addon on Firefox (which replaces Gecko for IE
rendering engine). I am just pointing this out, because once I was
developing a web application and had to parse XML, and my code worked on my
version of firefox and didn't work on this other computer. At that time, I
was using a node attribute called "wholeText" and had to change it to "data"
to keep compatibility.

On Wed, Nov 18, 2009 at 11:42 AM, Bart van den Eijnden <bartvde at osgis.nl>wrote:

> I can reproduce it in both Firefox 3.5.5 and Safari on Mac.
>
> Best regards,
> Bart
>
> On Nov 18, 2009, at 2:38 PM, Marc Jansen wrote:
>
> > Hi Pedro,
> >
> > Thanks for your input... but it seems odd: in my FF (Mozilla/5.0 (X11;
> > U; Linux i686; de; rv:1.9.1.5) Gecko/20091109 Ubuntu/9.10 (karmic)
> > Firefox/3.5.5) the upper OL-client is still flickering. Maybe some
> > setting in Firefox I changed? Or a plugin?
> >
> > I am really puzzled.
> >
> > Can someone else reproduce the flickering?
> >
> > Regards,
> > Marc
> >
> > Pedro Baracho wrote:
> >> For the record, I am currently using FF 3.5.5, Gecko/20091102 on
> >> Windows and I don't see any flickering in the link you posted.
> >>
> >> On Wed, Nov 18, 2009 at 11:10 AM, Marc Jansen <jansen at terrestris.de
> >> <mailto:jansen at terrestris.de>> wrote:
> >>
> >>    Hi list,
> >>
> >>    when the URL of an imagelayer is changed via the APIMethod setUrl,
> the
> >>    image is flickering regardless of the browser cache or the transition
> >>    effect. This behaviour can be seen e.g. here:
> >>
> >>    http://www.webmapcenter.de/wetterradar/animation.html
> >>
> >>    In that demo the URL of the imagelayer is changed every 500 ms and
> the
> >>    flickering should be easy to spot (at least if you wait for roughly
> 20
> >>    seconds). Firebugs Net-tab shows that the images are being requested
> >>    over and over.
> >>
> >>    The flickering is only noticeable in Firefox (3.5 Win and Linux);
> >>    Opera
> >>    10 and IE 8 work like a charm (they cache the varying images). The
> >>    changing of the src of a pure <img> with JavaScript does not show the
> >>    flickering (as can be seen in the above link, too). I don't have
> >>    results
> >>    for other browsers.
> >>
> >>    Can anybody help me identify the root of this flickering? I am unsure
> >>    whether this Firefox bugreport is maybe relevant to this issue:
> >>    https://bugzilla.mozilla.org/show_bug.cgi?id=492052. I doubt that
> >>    it is
> >>    related to apache settings (Caching- or Expires-Headers) as the
> >>    pure JS
> >>    solution isn't flickering at all.
> >>
> >>    Any help or advice on this issue would be great!
> >>
> >>    Regards,
> >>    Marc
> >>
> >>    BTW.: If someone shows me a better alternative to build an
> >>    animation of
> >>    different Imagelayers, I would be happy as well :-)
> >>
> >>
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> >>    http://openlayers.org/mailman/listinfo/users
> >>
> >>
> >
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> >
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>
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