Hello,
i started studying the Vaadin technology and i am looking for way to create animated 2D Drawing in website.
I have created project Spring + Vaadin + GWT Addons
Now i have been thinking about the best way for animation drawing.
1.) Canvas Widget for HTML5 + Javascript animation
2.) Drawing on Panel from Java Canvas and steps by timer? (its possible solution?)
What would you preffer?
I need to vizualize some algorithms and i do not like create website overview in html + css i would like to use vaadin for GUI 
thanks Milos