[OpenLayers-Users] Magnifier window solved
Steve.Toutant at inspq.qc.ca
Steve.Toutant at inspq.qc.ca
Fri Feb 5 15:25:05 EST 2010
solved using clone()
Thanks Alexandre,
Steve
for(i in overlays)
{
var oOriginalLayer = overlays[i];
// add the original layer to the 1st map
map.addLayer(oOriginalLayer);
// create the clone layer, reference it to its original
and add it to the second map
var oClonedLayer = oOriginalLayer.clone();
oOriginalLayer.cloneLayer = oClonedLayer;
ov_map.addLayer(oClonedLayer);
// register the 'visibilitychanged' on the original layer
oOriginalLayer.events.register('visibilitychanged',
oOriginalLayer, function()
{
// when this function is called,
'this' is the oOriginal layer
// that had its visibility
changed and since it has a reference
// to its clone, we simply use it
direclty
this.cloneLayer.setVisibility(this.getVisibility());
});
}
Alexandre Dube <adube at mapgears.com>
05/02/2010 11:40 AM
A
Steve.Toutant at inspq.qc.ca
cc
users at openlayers.org, users-bounces at openlayers.org
Objet
Re: [OpenLayers-Users] Magnifier window
Steve,
Steve.Toutant at inspq.qc.ca wrote:
>
> Alexandre, i don't understand want you mean by
> "and attach it to the original layer ( layer.clonedLayer =
> myCloneLayer )"
> Do you think that could help with the length returned by
> ov_map.getLayersByName(this.name)
The 2nd option is : do not use ov_map.getLayersByName(this.name).
Instead, when creating your myCloneLayer object, make a reference to it
to its original layer : layer.cloneLayer = myCloneLayer.
Alexandre
> thanks
>
> Steve
>
>
>
>
> *Alexandre Dube <adube at mapgears.com>@openlayers.org*
> Envoyé par : users-bounces at openlayers.org
>
> 05/02/2010 09:43 AM
>
>
> A
> Steve.Toutant at inspq.qc.ca
> cc
> users at openlayers.org
> Objet
> Re: [OpenLayers-Users] Magnifier window
>
>
>
>
>
>
>
>
>
>
>
> Steve,
>
> You could try (pseudo-code):
>
> For each layer
> Clone it, add it to ov-map and attach it to the original layer (
> layer.clonedLayer = myCloneLayer )
> Register a visibilitychange event to a onVisibilityChanged function
>
> onVisibilityChanged: function(event)
> this.clonedLayer.setVisibility(this.visibility())
>
> Regards,
>
> Alexandre
>
>
> Alexandre Dube wrote:
> > Steve,
> >
> > Instead of relying on the layer's position in the layers array,
> try to
> > use the following the getLayersByName method (see in my first reply).
> > Tell me if that worked.
> >
> > Alexandre
> >
> >
> > Steve.Toutant at inspq.qc.ca wrote:
> >
> >> Almost done....Amasing how things are easy to do with OL.
> >>
> >> I have a wms layers array, "overlays[]"
> >> I use this code to create the layers array of the overview map and to
> >> define the visibilitychanged event.
> >> var addLayersToMap = function()
> >> {
> >> for( i in overlays )//overlays contains my wms layers
> >> {
> >> map.addLayer( overlays[i] );
> >> ov_overlays[i] = overlays[i].clone();
> >> ov_map.addLayer( ov_overlays[i] );
> >>
> >> //Ajoute un listener au niveau de la carte principal pour
> >> gérer l'affichage sur la ov_map
> >> overlays[i].events.on(
> >> {
> >> 'visibilitychanged': function(event)
> >> {
> >>
> >> ov_overlays[i].setVisibility(overlays[i].getVisibility());
> >> }
> >> });
> >> }
> >> }
> >>
> >> in run time, only the visibility of the last layer of the array gets
> >> updated in the other map.
> >> I also tried with map.addLayers after adding the overlays[i]. events
> >> on...with the same result
> >>
> >> Do you see something wrong
> >> thanks
> >> Steve
> >>
> >>
> >>
> >>
> >> *Alexandre Dube <adube at mapgears.com>*
> >>
> >> 04/02/2010 03:36 PM
> >>
> >>
> >> A
> >> Steve.Toutant at inspq.qc.ca
> >> cc
> >> users at openlayers.org
> >> Objet
> >> Re: [OpenLayers-Users] Magnifier window
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Hi Steve,
> >>
> >> I think you could do something like that (pseudo-code) :
> >>
> >> Create your original map
> >> Create all your layers and add them to the map
> >>
> >> Create your ov-map
> >> Register a mapmove event to the map to make ov-map follow it
> >> For each layer
> >> Clone it and add it to ov-map
> >> Register a visibilitychange event to a onVisibilityChanged
function
> >>
> >> onVisibilityChanged: function(event)
> >> var layers = ov-map.getLayersByName(this.name); // this is the
layer
> >> the visibility was changed
> >> if(layers && layers.length == 1)
> >> layers[0].setVisibility(this.visibility())
> >>
> >> Do you get the idea ?
> >>
> >> Best regards,
> >>
> >> Alexandre
> >>
> >> Steve.Toutant at inspq.qc.ca wrote:
> >>
> >>> Hi,
> >>> I'm using openlayers with geoext.
> >>> I would like to create a magnifier window. So it is like an overview
> >>> map with a fix map center and a fix zoom level, but the main map and
> >>> this overview map share the same geoext tree, so the layers are
> >>> shown/hidden on both maps.
> >>>
> >>> I think I can do it if I start with the overview map example, here
> >>> http://www.openlayers.org/dev/examples/example-list.html
> >>>
> >>> Does someone have a better idea or already tried this?
> >>>
> >>> thanks in advance
> >>> Steve
> >>>
> >>>
> ------------------------------------------------------------------------
> >>>
> >>> _______________________________________________
> >>> Users mailing list
> >>> Users at openlayers.org
> >>> http://openlayers.org/mailman/listinfo/users
> >>>
> >>>
> >> --
> >> Alexandre Dubé
> >> Mapgears
> >> www.mapgears.com
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
>
>
> --
> Alexandre Dubé
> Mapgears
> www.mapgears.com
>
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
>
>
--
Alexandre Dubé
Mapgears
www.mapgears.com
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