Different symbology for each theme in QGIS

Question

I want that a layer changes its symbology depending on the theme selected.

Is that possible?

Maybe if I could retrieve the name of the active theme I could add it as a part rule at the symbology.

If ThemeName == 'A'
...do this symbology
else
...do this one

There's a a way to get it?

Answer 1

Yes, @Javier G you can do it by combining themes with layer styles. You assign a layer style to each theme.

Do you know how to have several styles available for a layer?

You set the style, then right click > styles > add...

This will open a dialog box where you can enter the name of the style. Set another style and repeat the procedure by assigning another name.

This way you have multiple styles available for a layer, with a single click

Now, you can create several themes and assign a certain style to each layer.

Every time you change the theme, the styles of all the layers you have set up will change, so your whole map