color calibration - Chroma slider color not updating when % is 0

[michmill1970]

Describe the bug

In the color calibration module, the color of the chroma slider is always red when adjusting the hue if the percentage of the chroma slider is 0. I use the color of the chroma slider to fine-tune the tint to get the desired result.

Darktable Version: 4.8.0, 4.8.1 OS: MacOS 14.5 (23F79) Install from .dmg

Steps to reproduce

1. Go to the color calibration module
2. Set the illuminant to custom (the setting of the adaptation does not matter)
3. Set the chroma slider to 0
4. change the hue. The color of the chroma slider will not change

Expected behavior

In the color calibration module when the illuminant is set to custom and the hue is changed, the color of the chroma slider should change regardless of the percentage of the chroma slider.

Logfile | Screenshot | Screencast

Commit

No response

Where did you obtain darktable from?

downloaded from www.darktable.org

darktable version

4.8.1

What OS are you using?

Mac

What is the version of your OS?

14.5 (23F79)

Describe your system?

MacBook Pro, 64GB RAM, 1T SSD, Apple M1 Max CPU

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

Apple M1 Max

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

[github-actions[bot]]

This issue has been marked as stale due to inactivity for the last 60 days. It will be automatically closed in 300 days if no update occurs. Please check if the master branch has fixed it and report again or close the issue.

[TurboGit]

To me this is not a bug, no chroma so hue has no impact on the output.