Proposal: Keyboard driven piano roll mode

[jneen]

Enhancement Summary

A keyboard mode for editing in the piano roll - either enabled by default, turned on via config, or a specific tool.

• Includes a "point" in the pitch/time grid, movable by simple arrow keys
• Inputting a note via MIDI or the computer keyboard would result in a new note at the current "point"
• Ability to "grab" notes and move/resize/adjust parameters with modifier keys
• Keyboard-driven selection / multi-note editing

Justification

• Accessibility for people with limited ability to use the mouse
• Faster and more accurate note-programming workflow
• Faster and more accurate editing interface
• The "point" could be used as a default location for other features, and is fairly intuitive as a "place where you are" marker

Mockup

If there is interest, I will work on a mockup specifically with the LMMS piano roll, including choosing specific keys for specific functions, but in the meantime I have a general interactive demo here:

http://files.jneen.net/ui.html

[jneen]

(I should note, I'm willing to code, test, and iterate on this)

[Spekular]

The existing step recording feature seems related:
#4544

[jneen]

Yes! It would ideally be an enhancement to that feature, adding things like modifying, moving, and deleting notes after they have already been input.