Also for the record<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Pavel Iacovlev</b> <span dir="ltr"><<a href="mailto:iacovlev.pavel@gmail.com">iacovlev.pavel@gmail.com</a>></span><br>
Date: Wed, Nov 18, 2009 at 11:30 AM<br>Subject: Re: [OpenLayers-Users] Image flickering in Firefox when changing the URL of an image layer<br>To: Pedro Baracho <<a href="mailto:pedropbaracho@gmail.com">pedropbaracho@gmail.com</a>><br>
<br><br>Using Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5)<br>
Gecko/20091102 Firefox/3.5.5<br>
<br>
I see the flickering<br>
<div><div></div><div class="h5"><br>
On Wed, Nov 18, 2009 at 3:18 PM, Pedro Baracho <<a href="mailto:pedropbaracho@gmail.com">pedropbaracho@gmail.com</a>> wrote:<br>
> For the record, I am currently using FF 3.5.5, Gecko/20091102 on Windows and<br>
> I don't see any flickering in the link you posted.<br>
><br>
> On Wed, Nov 18, 2009 at 11:10 AM, Marc Jansen <<a href="mailto:jansen@terrestris.de">jansen@terrestris.de</a>> wrote:<br>
>><br>
>> Hi list,<br>
>><br>
>> when the URL of an imagelayer is changed via the APIMethod setUrl, the<br>
>> image is flickering regardless of the browser cache or the transition<br>
>> effect. This behaviour can be seen e.g. here:<br>
>><br>
>> <a href="http://www.webmapcenter.de/wetterradar/animation.html" target="_blank">http://www.webmapcenter.de/wetterradar/animation.html</a><br>
>><br>
>> In that demo the URL of the imagelayer is changed every 500 ms and the<br>
>> flickering should be easy to spot (at least if you wait for roughly 20<br>
>> seconds). Firebugs Net-tab shows that the images are being requested<br>
>> over and over.<br>
>><br>
>> The flickering is only noticeable in Firefox (3.5 Win and Linux); Opera<br>
>> 10 and IE 8 work like a charm (they cache the varying images). The<br>
>> changing of the src of a pure <img> with JavaScript does not show the<br>
>> flickering (as can be seen in the above link, too). I don't have results<br>
>> for other browsers.<br>
>><br>
>> Can anybody help me identify the root of this flickering? I am unsure<br>
>> whether this Firefox bugreport is maybe relevant to this issue:<br>
>> <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=492052" target="_blank">https://bugzilla.mozilla.org/show_bug.cgi?id=492052</a>. I doubt that it is<br>
>> related to apache settings (Caching- or Expires-Headers) as the pure JS<br>
>> solution isn't flickering at all.<br>
>><br>
>> Any help or advice on this issue would be great!<br>
>><br>
>> Regards,<br>
>> Marc<br>
>><br>
>> BTW.: If someone shows me a better alternative to build an animation of<br>
>> different Imagelayers, I would be happy as well :-)<br>
>><br>
>><br>
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><br>
><br>
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