David Winslow wrote:
> Hi all,
>
> For a project I'm working on, I would like to be able to request a
> single PNG image from GeoServer that includes not only rendered map
> features, but also some overlays like a scale bar and a legend graphic.
> I have done some work on generalizing the already-present watermark
> code; in particular:
> * separating out the layout from the rendering logic (so now the
> watermark painter receives just a rectangle within the viewport and
> draws itself into that.)
> * adding a parameter to the paint method so that overlay providers can
> do context-sensitive things (like scale bars and geographically correct
> compasses)
>
those seem like good ideas.
The layout format seems well thought too, looks like it allows for a
high level of customization.
> Additionally, I redid the layout code a bit to support offsets and
> multiple overlays in the same image request. (Attached is a demo image
> featuring everyone's favorite cactus monster [1]).
>
> The request is a standard WMS request specifying
> format=png-decorated&format_options=layout:mylayout where layout is a
>
I just don't get why the extra png-decorated output format is needed?
Gabriel
> named configuration (currently the layout code doesn't actually read the
> configuration; it's just hard-coded for the demo above). I am currently
> thinking the configuration should have a 1:1 relationship with xml files
> in ${GEOSERVER_DATA_DIR}/layouts/; a sample configuration file in the
> format I am currently imagining is also attached. I'd be very
> interested in feedback on the configuration.
>
> So that's what I'm trying to accomplish. Ideally, I'd like to get this
> into the next release, but I don't think I will be able to deal with
> backward compatibility with the current watermark configuration, a
> stable configuration file, the user requirements for promotion, etc. in
> time.
>
> In the meantime, I have three questions:
> 1) May I commit this code as a community module?
> 2) Where on the wiki should this be documented while this feature is
> still under development?
> 3) What's wrong with the configuration file?
>
> --
> David Winslow
> OpenGeo - http://opengeo.org/
>
> [1] http://en.wikipedia.org/wiki/Monsters_of_Final_Fantasy#Cactuar
>
>
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Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
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