Adapt label box size to text length in layout composer

Question

In the layout composer I want to add a title in black text with a white background.

My title will be dynamic and I want the text box ("label" in the composer) to automatically adapt its size in order to fit the text length without needing to manually change its size.

Answer 1

Assuming your title text comes from a given expression (in my case I just took @layout_name)

You can set the Label's Position & Size properties X and Width to depend on your title text expression:

Set Width to be something like: A x length(title string) + B:

Set X to be something like: Page middle X coordinate - Width/2:

Here you go:

Answer 2

This is solvable if you use HTML rendering to create a table cell with CSS "background-color","color" and "padding" style:

<table><tr><td style="padding:5 20;background-color:blue;color:white">[% my_title_field %]</td></tr></table>