Itemviews: Performance with large selections
I've got some major performance issues when selecting a large number of rows (some hundred) in a treeview. It surprises me as otherwise the performance is really stunning. Selections take a long time and scrolling using the scrollbar is really slow.
Is this a known issue? Are there any workarounds / best practices?
P.S.: For selections that are triggered by the code (not user) I can think of workarounds like marking/coloring the rows via the model, but native selections would be most familiar for the users.
What platform are you running on ?
If you are on Linux/Mac OS X you should try to run a profiler such as Valgrind to figure out where your application is spending cycles and figure out what your bottleneck is.