Configurable mouse wheel scroll speed for editor and panes with lots of content

Currently, when browsing through a large source file in the editor, scrolling with the mouse wheel moves one line per unit scrolled - it would be nice if I could increase that speed.

Some views/panes like Outline can have large numbers of items, it would be useful to scroll faster there too.

I'm using XFCE 4.12, there is no setting for mouse wheel scroll speed (and if I did set it to a high value system-wide, it will undoubtedly make scrolling too fast for a least one program).

As an example, Firefox allows this to be configured in about:config mousewheel.default.delta_multiplier_x .

Originally discussed on mailing list: http://lists.qt-project.org/pipermail/qt-creator/2016-June/005807.html

Thanks