allow users to change mapping options from GUI without having to edit XML or JS

[Be]

It would be convenient if there was an API for scripts to expose variables to Mixxx's GUI that could be changed from the controller preferences so users would not have to edit mappings themselves. This could be used, for example, to adjust jog wheel sensitivity or which decks the controller manipulates.

See also: Bug 1451334

[Daniel Schürmann (daschuer)]

Can we rename the bug to something like:
"mapping script ControlObjects with GUI"

We may allow the mapping script to register its own ControlObjects. This is what we have done for Skins:
https://github.com/mixxxdj/mixxx/blob/master/res/skins/Shade/skin.xml#L65

The mapping script may also provide its own GUI to change it's ControlObjects.
This can be done like a "Skin" for the preference.

Before we are able to do this, we may just present them in a view like the CO view in the development menu.

Somehow related: Bug #1166016

[Be (be.ing)]

If you think allowing scripts to register their own COs which would be exposed to the GUI is the best way to handle this, sure. If this system is flexible enough to allow mappings to specify their own GUI for changing these, this should be easy for script writers and done automatically for simple cases. For example, scripts should not need to specify their own GUI for boolean variables; checkboxes should be made by Mixxx automatically. Similarly, for numeric variables, a number input box with up/down arrows would be made automatically and scripts could specify a range of acceptable values.

Related to Bug 1166016, see the wiki page I started recently for brainstorming about a new mapping format:
http://mixxx.org/wiki/doku.php/new_control_mapping_format

[Daniel Schürmann (daschuer)]

We have two issues:
* Adding descriptions -> a CO currently does not have any self description
* Internationalization -> Skin specific texts can't be translated.

Maybe we can just statically add a set of COs for the common uses cases into the Mixxx engine.

Do you have use cases for this feature?

[Be (be.ing)]

Yes, I put a few options at the top of my Electrix Tweaker mapping for users to adjust as they like. See https://github.com/Be-ing/mixxx/blob/tweaker_mapping/res/controllers/Electrix-Tweaker-scripts.js

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/8135