Indeterminate checkbox state (treeview items)

[Raruto]

Checklist

• [x] I've searched through the current issues to make sure this feature hasn't been requested already.

Motivation

Probably within QGIS desktop UI it is not yet managed.

BTW, it's quite common to provide to end users an intermediate state for treeview parent nodes that are not fully active.

Here below an indeterminate checkboxes example:

Suggested solution

Make use of the fa-square-minus to denote this state:

Before

After

Alternatives considered

• https://css-tricks.com/almanac/selectors/i/indeterminate/
• https://css-tricks.com/indeterminate-checkboxes/
• https://codepen.io/kkuhnen/pen/RBLdpp (overlapping fa-square and fa-square-small icons)
• https://fontawesome.com/icons/square-minus
• https://fontawesome.com/icons/square
• https://fontawesome.com/icons/square-small

[leolami]

Hi @Raruto it could be a valid solution but we want to follow the behavior and style of QGIS as closely as possible to simplify the transition from desktop to web for the average QGIS user

And as you can see, the checkbox doesn't change its appearance based on the layers turned on or off inside it

Thanks for the report Leonardo