It’s (increasingly loosely) based on the PictureBook application from
FXRuby: Creating Lean and Mean GUIs with Ruby, by Lyle Johnson3, and is principly a project for me to learn FXRuby/GUI programming and also to experiment with the new DataMapper gem.
Install the nessary gems:
gem install fxruby image_science
And follow the instructions on the DataMapper site to get the latest DM.
Then just run