Set font size automatically depending on display size

[stewag64 8]

I develop a smartphone app with a tabcontrol with several tabs for some years already.

 

In order to size controls I use TGridPanelLayouts but in order to also scale font-sizes, I am still using various layout packages.

That is because I realized that the "standard" font-size is often too small on larger devices.

 

Layout packages have two drawbacks:

1. There is a bunch of layouts to update for every change in the app

2. You can never catch all existing Android display sizes, as I realize when I look at my app at other person's smartphones.

 

That is why I want to get rid of layout packages and find an algorithm that allows me to set font-sizes for labels, buttons and memos, depending on screen.width (or other device parameter).

 

Is there a general approach for this?

Does it also respect different device's dpi?

 

Thanks for any advice 

Steffen