[OpenLayers-Users] spinner for WMS Untiled

[Bart van den Eijnden (OSGIS)]

Hi Erik,

not yet, it's all intranet development currently. I'll try to set up an 
internet demo early next week and let you know.

Best regards,
Bart

Erik Uzureau schreef:
> Hi Bart,
>
> is there somewhere that we can see this live and running?
>
> -Erik
>
> On 1/9/07, Bart van den Eijnden (OSGIS) <bartvde at osgis.nl> wrote:
>> Hi list,
>>
>> I have finally gotten things to work for having a spinner image for WMS
>> Untiled. Note this only works for WMS Untiled, but I guess for 
>> loading tiles
>> the user will have enough visual effect anyway of what's going on.
>>
>> I have added a patch to ticket 452 
>> (http://trac.openlayers.org/ticket/452),
>> hopefully somebody can review this. I have no problems signing the
>> contributor agreement if necessary.
>>
>> If this will be accepted, I can add a section to the Wiki on how this 
>> event
>> can be used within an application. I will do that in this e-mail as 
>> well to
>> start with.
>>
>> The application should hold a counter variable:
>>
>> var layerloadcounter = 0;
>>
>> Three counter functions are necessary:
>>
>> function setcounterbynumlayers(){
>>       var layers = map.layers.slice();
>>       layerloadcounter = layers.length;
>>       if (layerloadcounter > 0 && activitydiv) { 
>> activitydiv.style.zIndex =
>> 1000; }
>> }
>> function increasecounter(){
>>       layerloadcounter++;
>>       if (layerloadcounter > 0 && activitydiv) { 
>> activitydiv.style.zIndex =
>> 1000; }
>> }
>> function decreasecounter(){
>>       if (layerloadcounter > 0) layerloadcounter--;
>>       if (layerloadcounter == 0 && activitydiv) { 
>> activitydiv.style.zIndex =
>> -1000; }
>> }
>>
>> which are tied to OpenLayers events:
>>
>> map.events.register( 'addlayer', this, increasecounter);
>> map.events.register( 'removelayer', this, decreasecounter);
>> map.events.register( 'layerloaded', this, decreasecounter);
>> map.events.register( 'moveend', this, setcounterbynumlayers);
>>
>> Finally, there needs to be a div showing the image:
>>
>> var gMapDHTMLWaitImage = 'yourimageurlgoeshere';
>> sz = new OpenLayers.Size();
>> sz.h = 246;
>> sz.w = 50;
>> activitydiv = OpenLayers.Util.createDiv("ActivityLayer", null, sz,
>> gMapDHTMLWaitImage);
>> map.viewPortDiv.appendChild(activitydiv);
>>
>> Best regards,
>> Bart
>>
>> -- 
>> Bart van den Eijnden
>> OSGIS, Open Source GIS
>> http://www.osgis.nl
>>
>>
>>
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at openlayers.org
>> http://openlayers.org/mailman/listinfo/users
>>
>
>


-- 
Bart van den Eijnden
OSGIS, Open Source GIS
bartvde at osgis.nl
http://www.osgis.nl