jamming
Jamming is a Ruby library to generate images of guitar chords.
Installation
gem install jamming
or if you are using Bundler, add this line to your Gemfile:
gem "jamming"
Usage
File.open("/tmp/old_good_jimi.png", 'w') do |f|
chord = Jamming::Chord.new("0-7-6-7-8-x")
f.write chord.to_png(:label => "Em7#9")
end
This will write Em7#9, The Jimi Hendrix Chord, to /tmp/old_good_jimi.png:
Auto labels
Jamming has an internal database with some chords that lets her auto-identify some chords. So, for example:
File.open("/tmp/a_major.png", 'w') do |f|
chord = Jamming::Chord.new("x-0-2-2-2-0")
f.write chord.to_png
end
will generate an image like this:
(Notice the A label even if you never explicitly declared it.)
If you'd like to override this behavior, pass :label => false
to the to_png
method (Use exactly :label => false
, as :label => nil
still triggers the auto-labeling behavior).
If you find a chord that is not auto-labeled but you'd like it to be, please add it to this file and send a pull request.
Front-end
Jamming is better served with a front-end that takes care of generating the images for you. Check out this tiny Sinatra app that does just that.
Thanks
Some code based on ander/chords, thanks!
Contributing to jamming
- Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
- Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
- Fork the project
- Start a feature/bugfix branch
- Commit and push until you are happy with your contribution
- Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
- Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.
Copyright
Copyright (c) 2010 Andrés Mejía (Aprender guitarra). See LICENSE.txt for further details.
Other important notes
You suck if you don't play guitar, kthxbai.