Did you try WebCode (http://www.webcodeapp.com/)? It is a vector drawing app for Mac that instantly generates nice, clean and readable SVG code. You can also choose to generate HTML/CSS and JavaScript/Canvas code from your drawings.
I keep meaning to but haven't got round to coughing up the £35. It does look amazing and is (one direction) of the sort of thing I was talking about. I'd need to see the javascript it generates before I could happily include it a project.
