[OpenLayers-Users] Vector layer with map.events.register("click")

[Vito Tafuni]

i'm having a similar problem with polygons with ModifyFeature activated over
a simple google layer
i would like to drag the map even if the mouse is over a polygon

Is there a way to distinguish between "click and drag" and "simple click"
over polygon??

...something like make the polygon pass the "click and drag" event to the
map...

thanks


-Vito-
--
-----------
Tafuni Vito
vito at vitotafuni.com
---------------------------------------------
"Verba volant, scripta manent... data corrupted"


2010/6/8 Brad Spencer <bradspencer at ozemail.com.au>

> Stuart,
>
> I think its horses for courses really. A lot of people get hung up about
> mouseover interactivity and force programmers to do all sorts of gymnastics
> to try to make a loosely coupled web app look like as responsive as a
> desktop GIS. This is even worse when you are dealing with polygons -
> geometry gets filtered and loaded to the client just to give the mouseover
> interactivity which looks awful when you zoom in. Also, the area that a
> user
> decides to apply this approach to maynot be controllable by you and could
> lead to excessive and unnecessary geometry download times.
>
> When working with remote data services you may or maynot have access to WFS
> in which case you need to use getfeatureinfo requests to get the attributes
> on a click. If the data is private to the end user and does not belong to
> the WMS data provider at all then uploading geometry into the user's
> session
> from their desktop is the way to go providing the mouseover interactivity.
>
> Of course if you need the geometry in the client for real spatial analysis
> purposes then that is a different issue than doing it just for mouseover
> interactivity and is typically done on a more selective object basis.
>
> Now to answer your question regarding clicking on the vector layer. I found
> that you have to make the vector layer the top layer to avoid these
> conflicts. So I manipulate the z-index of the vector layer to make sure its
> at the top.
>
> Cheers, Brad....
>
>
>
>
>
> -----Original Message-----
> From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org]
> On
> Behalf Of gingerbbm
> Sent: Tuesday, June 08, 2010 2:26 AM
> To: users at openlayers.org
> Subject: [OpenLayers-Users] Vector layer with map.events.register("click")
>
>
> Dear all
>
> I retrieve a set of points from GeoServer as a WMS tile. Using
> map.events.register('click',...) I attempt to retrieve information about a
> specific point when the map is clicked, using a bespoke WFS call.
>
> I am now required to provide some data about each point on mouseover so
> have
> been investigating OpenLayers.Layer.Vector and
> OpenLayers.Control.SelectFeature. My initial idea is to keep my original
> WMS
> layer and supplement it with a WFS-driven Vector layer. See this mock-up:
>
> http://v5dev.elgin.gov.uk/sw.html
>
> The idea is to set the opacity of the style of the vector objects to 0.01
> to
> take advantage of the "selected" behaviour while seemingly not affecting
> the
> map appearance. But using this two-layer method, the map clicks are not
> triggering over the vector objects.
>
> So... two questions:
>
> 1. Is there a way to make map.events.register('click',...) work when a
> vector object is selected?
> 2. Should I abandon this and simply use the vector layer exclusively
> (plotting the relevant images at the appropriate points)?
>
> Would appreciate your advice.
>
> Thanks
> Stuart
> --
> View this message in context:
>
> http://osgeo-org.1803224.n2.nabble.com/Vector-layer-with-map-events-register
> -click-tp5149829p5149829.html<http://osgeo-org.1803224.n2.nabble.com/Vector-layer-with-map-events-register%0A-click-tp5149829p5149829.html>
> Sent from the OpenLayers Users mailing list archive at Nabble.com.
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