[OpenLayers-Users] mousewheel jumps two zoom levels

[Andreas Hocevar]

My guess is that you have two Navigation controls. One that is added
to the map by default unless you configure it with your custom array
of controls, and the navControl you added.

You can check in the javascript console by trying

map.getControlsByClass("OpenLayers.Control.Navigation");

and see if it returns an array of length 1 or 2.

The obvious fix is to configure the map with your own default set of controls.

Andreas.

On Thu, Jan 26, 2012 at 3:29 PM, Vidal, Antoni <antoni.vidal at icc.cat> wrote:
> Hi list,
>
>
>
> I’ve an OpenLayers.control.Navigation with following config options:
>
>
>
>         var navControl = new OpenLayers.Control.Navigation({
>
>             type: OpenLayers.Control.TYPE_TOGGLE,
>
>             zoomWheelEnabled: true,
>
>             mouseWheelOptions: {interval: 1}
>
>         });
>
>
>
> But when user changes map zoom level using mousewheel, map zoomlevel jumps
> from 0 to 2 and then to 4, etc.
>
>
>
> Is possible to change this behaviour and force change zoomlevel one by one ?
>
>
>
> Thanks in advance.
>
>
>
> Antoni Vidal
>
> Unitat d'Aplicacions SIG-WEB
> Institut Cartogràfic de Catalunya
> Parc de Montjuïc, E-08038 Barcelona
> Tel. (+34) 93 567 15 00 (ext. 3228)
> www.icc.cat
>
>
>
>
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>



-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.