show ControlPotmeter and EffectParameter values in skins

[mixxxbot]

Reported by: Be-ing
Date: 2017-12-28T08:46:33Z
Status: Confirmed
Importance: Medium
Launchpad Issue: lp1740372
Tags: usability

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We describe the scales of effect parameters in parameter tooltips, but it is impossible to know exactly what value a knob is at. It would be really helpful to show this beside the knob. I think Traktor does this quite well. In Traktor, the value of a knob replaces its label while the knob is being adjusted. Watch this video for an example: https://www.youtube.com/watch?v=rRg0fXlYYDI&t=4m40s

Related: Bug #⁠1419949

[mixxxbot]

Commented by: Be-ing
Date: 2017-12-28T08:48:46Z

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For effect parameters, we should create a way for effects to specify human readable formats of their values, for example dB, percentage, or beat fraction.

[mixxxbot]

Commented by: ronso0
Date: 2017-12-28T21:27:00Z

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This would be extremely helpful for sync'ed paramters like Echo's Time.
Until now I didn't dare to touch these knobs when Sync is On because it's lacking the feedback when snapping to a value.

[mixxxbot]

Commented by: Be-ing
Date: 2018-06-12T02:31:17Z

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Pushing this to 2.3.0 so I can focus on the library redesign branch.

[mixxxbot]

Commented by: ronso0
Date: 2020-03-05T19:13:51Z

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The way Traktor does it is really elegant. I guess this works well for mouse and controller usage, but we should also consider touch screens where fingers might cover the parameter name.
We could show the value in a small popup, using the tooltip mechanisms for placing it appropriately (left or right).

[ronso0]

Reopening this to track the tooltip solution which suits better for touch screens.
It's probably preferred to look into this for the QML knobs.