Add a global pen tilt direction offset
This PR is split from !2314
Add a global tilt direction offset -- can be helpful to make the brushes feel the same for right- and left-handed users.
Implements the following feature request: https://krita-artists.org/t/feature-request-global-brush-angle-offset-for-tilt-direction/17442
Test Plan
Usage example: https://krita-artists.org/t/brush-settings-wish-for-a-new-angle-offset-control-for-rotation-tilt-direction/111983/14?u=yrh
Formalities Checklist
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I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy. -
Does the patch add a user-visible feature? If yes, is there a documentation MR ready for it at Krita Documentation Repository? No documentation MR
Reminder: the reviewer is responsible for merging the patch, this is to ensure at the least two people can build the patch. In case a patch breaks the build, both the author and the reviewer should be contacted to fix the build. If this is not possible, the commits shall be reverted, and a notification with the reasoning and any relevant logs shall be sent to the mailing list, kimageshop@kde.org.