Custom Fret Lables

[Fieora]

Description
Allow custom fret labels (attached to instrument, player, or tuning) to allow other instruments that don't just use numbered frets/positions.

For example, shamisen players have the following:
0 -> 0
1 -> 1
2 -> 2
3 -> 3
4 -> #
5 -> 4
6 -> 5
7 -> 6
8 -> 7
9 -> 8
10 -> 9
11 -> 1b
12 -> 10
13 -> 11
14 -> 12
15 -> 13
16 -> 1#
17 -> 14
18 -> 15
19 -> 16
20 -> 17
21 -> 18

Additional context
Shamisen players would LOVE this feature, and essentially there is no tab editor that works easily for us, so this would be a killer feature.

[cameronwhite]

I need to read up on shamisens :) , but at first glance this might make sense as a property of the tuning
Is each fret is still a half step?

[Fieora]

I need to read up on shamisens :) , but at first glance this might make sense as a property of the tuning Is each fret is still a half step?

Yes, they are still half steps.

[cameronwhite]

Thanks! Yeah I'd say this makes sense to have as part of the tuning, maybe as an enum describing the different fret labeling methods.
Then SystemRenderer::drawTabNotes() could take this into account, and to find the tuning for the note being drawn the logic would be similar to https://github.com/powertab/powertabeditor/blob/master/source/painters/stdnotationnote.cpp#L140