[OpenLayers-Users] How to make a drag and drop for markers?

[Jimmy Aumard]

Thanks for this informations!!

It's work correctly with:

graphicWidth: 20,
graphicHeight: 34,
graphicXOffset: -10,
graphicYOffset: -34,
externalGraphic: "../../images/marker.png"

Cheers

Jim

2009/8/24 Alexandre Dube <adube at mapgears.com>

> Hi,
>
> Jimmy Aumard wrote:
>
>> Thanks it's perfect for my application!!!
>>
>> I just have to develop that :s
>>
>> I have one question : It's possible to put an offset to the external
>> graphic? Because images of markers (marker.png) are centered on the center
>> of the image's marker and not on the bottom of the image's marker
>>
>>
> check in lib/OpenLayers/Feature/Vector.js at the end.  All properties are
> there, so check the following to do what you need :
>
> * graphicXOffset - {Number} Pixel offset along the positive x axis for
> displacing an external graphic.
> * graphicYOffset - {Number} Pixel offset along the positive y axis for
> displacing an external graphic.
>
> Never tried this, but I definitively will soon.
>
> Best regards,
>
> Alexandre
>
>  I'm not sure I'm clear but it's difficult to explain this in English for
>> my...  Sorry
>>
>>
>> Cheers
>>
>> Jim
>>
>> 2009/8/24 Alexandre Dube <adube at mapgears.com <mailto:adube at mapgears.com>>
>>
>>
>>    Jimmy Aumard wrote:
>>
>>        Hello, thanks for answers,
>>
>>        My problème is I use markers and I put/update attributes on
>>        each in my database. I don't know how put or update attributes
>>        with vector layer (if you have an example I take it :D).
>>
>>
>>    You need a server that supports transactions :
>>
>>     - GeoServer
>>     - TinyOWS
>>     see the example :
>>    http://openlayers.org/dev/examples/wfs-protocol-transactions.html
>>
>>     - FeatureServer (uses MapFish protocol)
>>     see a demo : http://dev4.mapgears.com/bdga-fs/
>>
>>     The FS demo also shows a way to edit feature's attributes.
>>
>>
>>        I use vector layer for polygon with DragFeature. I know this
>>        solution but points representation is a point an I use icon,
>>        It's possible to put an icon to a point with a vector layer?
>>
>>
>>    Yes.  Look at the following example and search the source for the
>>    externalGraphic property.
>>    http://openlayers.org/dev/examples/styles-unique.html
>>
>>    Regards,
>>
>>    Alexandre
>>
>>
>>        Sorry for my english :s
>>
>>        Cheers
>>
>>        Jim
>>
>>
>>        2009/8/24 Eric Lemoine <eric.lemoine at camptocamp.com
>>        <mailto:eric.lemoine at camptocamp.com>
>>        <mailto:eric.lemoine at camptocamp.com
>>        <mailto:eric.lemoine at camptocamp.com>>>
>>
>>
>>           On Friday, August 21, 2009, Alexandre Dube
>>        <adube at mapgears.com <mailto:adube at mapgears.com>
>>           <mailto:adube at mapgears.com <mailto:adube at mapgears.com>>> wrote:
>>           > Hi,
>>           >
>>           >   One way to accomplish this is to use a Vector layer
>>        instead of a
>>           > Marker layer and use a ModifyFeature control do move your
>>        points
>>           > (markers) around.
>>
>>           The DragFeature control may be of interest as well.
>>
>>
>>
>>
>>           --
>>           Eric Lemoine
>>
>>           Camptocamp France SAS
>>           Savoie Technolac, BP 352
>>           73377 Le Bourget du Lac, Cedex
>>
>>           Tel : 00 33 4 79 44 44 96
>>           Mail : eric.lemoine at camptocamp.com
>>        <mailto:eric.lemoine at camptocamp.com>
>>           <mailto:eric.lemoine at camptocamp.com
>>        <mailto:eric.lemoine at camptocamp.com>>
>>           http://www.camptocamp.com
>>
>>
>>
>>
>>    --    Alexandre Dubé
>>    Mapgears
>>    www.mapgears.com <http://www.mapgears.com>
>>
>>
>>
>
> --
> Alexandre Dubé
> Mapgears
> www.mapgears.com
>
>
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