I am considering solutions for drawing diagrams using Google Web Toolkit (GWT). Up until now I have found only the gwt-diagrams project but it seems abandoned.
Are there any suggestions about diagramming with GWT?
I'm also looking into this, for drawing family trees. I'm currently prototyping with gwt-graphics, which looks to be actively developed and is nearing version 1.0.
There is also the Raphael javascript library, and a couple of thorough blog posts about wrapping GWT around them here and here. The guys in the first article actually released their code for as raphaelgwt.
I can't comment on any of the raphael stuff yet since I haven't used it, I just found this in my own research for drawing components.
You can use draw2d and gef(eclipse Graphical Editing Framework) to develop your GWT Diagram App Now. look at this: http://code.google.com/p/trufun-webrcp/ the GWT framework with completely open source based on html5 technology, is used to transplant eclipse RCP to GWT WEB.
I would use Google Chart Tools: http://code.google.com/apis/charttools/
I am actually working on a GWT library to draw diagrams and add widgets on the connections. Here is the project site http://code.google.com/p/gwt-links, you'll find a demo site and a video demonstration.
来源：https://stackoverflow.com/questions/2948823/how-can-i-draw-diagrams-using-google-web-toolkit