[OpenLayers-Dev] Layers into Groups

[Lorenzo Becchi]

Jachym, I see that all legend layouts can vary a lot.
what about Tim's idea to use templates?
I'm pretty scared about it but probably is a good solution.
Tim, do you think templates could really apply to Layer switcher without 
getting mad? if yes can you "enlighten our way"?

ciao
lorenzo


>
>
> A while ago I experimented a bit with a custom layer switcher outside 
> the map window, it still seems to be working at
>
> http://www.yunnanexplorer.com/mars.html 
> <http://www.yunnanexplorer.com/mars.html>
you've never tried it with Safari. Layers names disappears if you click 
on them.
:-|
>
> There were several ideas in it:
> First of all ignore the tick-boxes -- they flicker a layer on and off. 
> This is not very intuitive. I thought once having a special effects 
> div hidden with every layer that could be turned on and off. 
> Flickering a layer, moving a sliding window over a layer, inverting 
> colours, image stretching could all go in there. Never followed through.
>
> The sliders allow to adjust transparency of a layer: red all the way 
> to the left is off, green is 100% opaque. The rest somewhere in the 
> middle: good way if you want to look at data in more than one map at a 
> time.
>
> Furthermore it is possible to drag the layers up and down, changing 
> the stacking/drawing order. I know that conflicts with the baselayer 
> concept of OL.
>
> These effects were done with scriptaculous and do not really work that 
> well under IE, but someone with more patience/time than me could 
> probably make them work. It is now over a year old and I have not done 
> any work on it, so some of the layers have ceased to function.
>
> I think building better/different layer switchers, particularly with 
> grouping, is quite important...
>
> Ludwig
>
>
>
>
>
>
> On 23/10/2007, * Jachym Cepicky* <jachym.cepicky at gmail.com 
> <mailto:jachym.cepicky at gmail.com>> wrote:
>
>     Hi,
>
>     could anybody of you, guys, have a look at new "custom LayerSwitcher"
>     example [1] ?
>
>     I hope, it works on all platforms
>
>     Comments are more  then welcomed
>
>     Jachym
>
>     P.S. You will have to probably zoom to Canada, go get all layers work
>
>     [1]
>     http://dev.openlayers.org/sandbox/jachym/openlayers/examples/layerswitcher.html
>
>     Jachym Cepicky píše v Po 15. 10. 2007 v 13:20 +0200:
>     > Hi developers,
>     > I have implemented ordering map layers into groups [1]. You have to
>     > specify new layer attribute group:"Group Name", e.g.:
>     >
>     >  var dm = new OpenLayers.Layer.WMS ( "DM Solutions Transit",
>     >                 "http://www2.dmsolutions.ca/cgi-bin/mswms_gmap",
>     >                 {layers: "rail,road",
>     >                  transparent: "true", format: "image/png"
>     >                 },
>     >                 {
>     >                   group:"Transit"
>     >                 });
>     >
>     > You can define group hierarchy using "/" mark:
>     >
>     > ....
>     > group: "Transit/Roads"
>     > ....
>     >
>     > Only changed file is LayerSwitcher.js
>     >
>     > For example see [2]
>     >
>     > Hope, you'll like it
>     >
>     > Jachym
>     >
>     > [1] http://trac.openlayers.org/ticket/1086
>     > [2]
>     >
>     http://dev.openlayers.org/sandbox/jachym/openlayers/examples/layer-groups.html
>     > _______________________________________________
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>     --
>     Jachym Cepicky
>     e-mail: jachym.cepicky at gmail.com <mailto:jachym.cepicky at gmail.com>
>     URL: http://les-ejk.cz
>     GPG: http://www.les-ejk.cz/pgp/jachym_cepicky-gpg.pub
>
>
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