[OpenLayers-Users] layer event transparency

[Kris Geusebroek]

Hi,

It might be worth a try to use the multiple layers feature of the new
SelectFeature control.
This way you can virtually combine multiple layers and define actions on
hover over features on each of the layers.

Only available in 2.8rc

Cheers Kris

-----Original Message-----
From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org]
On Behalf Of Christopher Schmidt
Sent: Friday, May 08, 2009 1:46 PM
To: protos
Cc: users at openlayers.org
Subject: Re: [OpenLayers-Users] layer event transparency

On Fri, May 08, 2009 at 04:04:46AM -0700, protos wrote:
> 
> Hi,
> 
> I have a map with a transparent vector overlay over it, which has some
> features.
> I want the features to pickup click events and apart from that I want
the
> overlay
> to allow all other events to go through the vector layer and get
picked up
> by the
> layers below (map / markers etc) 

Can't do it. Vector layers block clicks going through to lower layers.

> The vector overlay z-index is higher than all other layers.
> There are no events registered on the vector layer. 
> The features use the selectFeature to pick up events on them. (works
fine)
> I've set vectorLayer.event.fallthrough  to true
> I've set vectorLayer.style.pointerEvents to 'none'
> 
> I can't get it to work though and the worst thing is that it's
behaving very
> strangely.
> Some of the lower layers will pick up click events, some don't.
dragging the
> map 
> works. Events on all the map controls work. 

Map controls are all above the vector layers. The map *click* events
will get through, but the markers will not get clicks.

> Basically the map and one other layer seem to pick up all events.
> 2 other layers don't pick up any events.
> If I remove the vector layer everything works fine so it definitely
seems 
> to be the culprit

Yes.

> Can anyone see what the issue could be with this ?
> Is there problems / bugs with vector layer events  - it seems to be
very
> inconsistent.

I doubt it's inconsistent -- though it is likely to be the cae sthat it
doesn't do what you want.

-- Chris

> Any help appreciated.
> 
> Cheers.
> 
> 
> 
> 
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> 
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-- 
Christopher Schmidt
MetaCarta
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