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

[Pedro Baracho]

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> 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 :-)
>
>
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20091118/872754d3/attachment.html