I am slowly crazy 🙁

I would like to develop an app with cairographic:
To do so, a graphic is to be displayed immediately from sensor data when starting the app
on my Samsung Gear S3. For this graphic properties like color and line strength should be a possibility to adjust.
The coding of cairo graphic is simple, but how do I get there a more_option property (or an alternative)?
A cairo graphic is displayed in the window and for more_option I need a naviframe. How do I combine this?
Or is there an alternative possibility i.e. to choose a line strength?

I need a example like “Cairo Show Text” with the possibility i.e. to change the text color.

Pls help!