[sciurius]

Whether "the eye is clicked" should be a user preference.

I've encountered two common ways of treating a capo.

• Guitars and other fretted harmonic string instruments: The capo changes the key but not the chords (shapes).
  
• Keyboards, bass, etc: The capo changes the key and the chords.
  

So if I, as a guitar player, have a song with capo 2 and chord D, I put the capo on 2 and play chord D (which will sound as E).
My keyboard player will have to play E so 伊 will want to see the chords transposed.