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From "Steiner, Dominik" <Dominik.Stei...@gigatronik.com>
Subject Drawing on a JSVGCanvas with SVGGenerator??
Date Wed, 10 Aug 2005 06:14:46 GMT
Hi my dear Batik fellows,


I'm trying to implement a drawing feature into my application:


* where the user can draw shapes (e.g. polygons) by clicking and
dragging with the mouse.

* Underlying is a SVG graphic of a map. 

* this shapes should get stored, preferably as a separate SVG file

* all is handled inside a JSVGCanvas


Up to now I try to implement this using the SVGGenerator, but I'm not
sure if this is a good approach and I'm having trouble using it.


1) I have to instantiate the SVGGenerator with the SVGDocument of my
underlying map

svgGenerator = new SVGGraphics2D(mapSVGDocument);


            2) I set the Canvas size of the Generator to that of the map



            3) then the user by clicking on the canvas can draw a



            4) to get the drawings displayed in my map, I have to use
the UpdateManager of the JSVGCanvas??



      public void run() {






This doesn't work.


1) I also would like to add EventListener to the shapes the user is
drawing. I'm not sure where to add those listeners? Before I add them to
the mapCanvas on traversing the root I got from SVGGenerator?


I'm deeply grateful for the help you can give me.


Greetings from Germany.


Dominik Steiner

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