[Solved] QTreeView child indicator resize

LuGRU

Hello,
I want to achieve simply task, but can't find suitable appraoch.
Basically what I want to do is to resize child expand indicator in QTreeView. Simply task it seams, I subclassed QStyledItemDelegate and increased font and decoration size but what it only does is to increase item size.

So my question is how to increase size of expand indicator?

In red rect returned and available in QStyledItemDelegate subclass.

example

As You can see expanding rectangle / fontsize / decoration size don't help.

LuGRU

Eh... RTM... indention.
Need to stop 16h marathons ...