Whenever I’m working on UI stuff, something always goes terribly wrong 😉 Sometimes it’s only a margin or padding, other times it a composite that crosses my path. I was pretty happy that Chris Aniszczyk and Simon Archer hacked together Picasso, which helps you to identify some of these layout issues. As you may know, most of the time I work on the Rich Ajax Platform (RAP) and come across the same issues. As Picasso was originally intended to work for RCP, it’s not a long way to get it working for RAP.
In case you’re struggling with these issues too – and working on RAP applications, please add your vote to bug 267975 so we can use Picasso on both runtimes.