Just to follow up andrea's ideas. In udig we make a custom label cache and throw it at several streaming renderers (so they can render in different threads) - so the idea of a custom label cache works very well.
We also do a trick of increasing the page resolution; and then also using a visitor to edit the styles (so lines and fonts are bigger); and then rescale that output down to the final page size. This results in a larger; but higher quality pdf. Jody On 02/02/2011, at 6:36 PM, Andrea Aime wrote: > On Tue, Feb 1, 2011 at 9:38 AM, Frank Gasdorf > <fg...@users.sourceforge.net> wrote: >> Hi List, Hi Jody >> First of all, sorry for cross-posting! >> >> Last Night I had a look at the iText Project [1] Jody has mentioned and I >> have to dive deeper to get a clue what it does and which part of the API is >> currently used by geotools/geoserver. >> What I like to get is a pdf file where the user could use (but not required) >> the free terrago toolbar [2] to measure distances and areas and type lat/lon >> coordinates to jump to locations within the pdf. But it is required to have >> CRS information about the data/content within the document. In addition it >> would be great to have layers in the hierarchy view (Index) and search >> capabilities on the feature content (attribute values). >> But however, would't that be nice features for all geoserver/geotools folks >> and end-users to get a ready to go pdf for the field and have these >> capabilities. >> Maybe some of you could point me to the code where the pdf stuff is taking >> place ... I'm going to read the adope pdf documentation [4] to find a hint >> if some TAGs are missed to act like a geopdf. And properly it's already >> supported by iText to create the meta information. An other relevant >> documentation is "PDF Geo-registration Encoding Best Practice Version >> 2.2" at OGC standards best practices home [3]. >> Do you think we could create an enhancement in geotools/geoserver for that? > > I don't know, didn't had the time to investigate the links you provided. > Howerver, the code that generates PDF in GeoServer is here: > http://svn.codehaus.org/geoserver/trunk/src/wms/src/main/java/org/geoserver/wms/map/PDFMapResponse.java > > Basically we ask iText to give up a Graphics2D object and then we draw > on top of it as if it was a java2d one. > > That does not give an occasion to do anything in between layers > getting rendered. > I guess one could split the map into n single maps, yet that would break > labeling solid (as it has to happen at the end of the rendering to > have all labels > conflict resolve with each other and stay on top). > That too can be handled somehow but it would require splitting the styles > into components with text symbolizers and components without.... > > As for setting in the necessary metadata, I hope iText provides the > necessary support for that (but I'm confident it might) > > Cheers > Andrea > > PS: ah, another possible hack is to create a custom label cache that > just wraps the standard one. This is because the label cache is informed > on layers starting and stopping being rendered. > Yet another possibility would be to make streaming renderer subclassable, > but it's not on purpose, not really though to be a base class > > -- > Ing. Andrea Aime > Technical Lead > > GeoSolutions S.A.S. > Via Poggio alle Viti 1187 > 55054 Massarosa (LU) > Italy > > phone: +39 0584962313 > fax: +39 0584962313 > > http://www.geo-solutions.it > http://geo-solutions.blogspot.com/ > http://www.linkedin.com/in/andreaaime > http://twitter.com/geowolf > > ----------------------------------------------------- ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Geoserver-devel mailing list Geoserver-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-devel
