Convert vertical wheel events to horizontal for two cases of
the items layout when vertical scrolling is impossible:
1) TopToBottom flow with wrapping
2) LeftToRight flow without wrapping
Do it only for pure vertical events to avoid a mess for such
devices as touchpads or Apple Mouse.
[ChangeLog][QtWidgets][Important Behavior Changes] Allow
horizontal scrolling with a vertical mouse wheel for QListView.
Task-number: QTBUG-37007
Change-Id: Ie2525153fa7b443d27ca08cc5f5d4d7ecdb8c183
Reviewed-by: Thorbjørn Lund Martsum <tmartsum@gmail.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
59cc316620