[systemsettings] [Bug 324616] New: wish: mousewheel scroll acceleration

[Richard Neill]

https://bugs.kde.org/show_bug.cgi?id=324616

            Bug ID: 324616
           Summary: wish: mousewheel scroll acceleration
    Classification: Unclassified
           Product: systemsettings
           Version: 4.11.0
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: kcm_mouse
          Assignee: unassigned-bugs at kde.org
          Reporter: kde at richardneill.org
                CC: unassigned-bugs at kde.org

It would be really useful to have acceleration for the mousewheel scroll, as
with the pointer.

At the moment there is just a single gain setting "mousewheel scrolls by X
lines". 

However, sometimes I want to scroll just one line at a time (eg move one-line
down in an editor), sometimes I want to scroll several lines (while reading a
document), and sometimes I want to "fling" the scroll-wheel sharply down to
scroll through multiple pages of a 100-page PDF.

So, I'd really like to have a 3-line polygon for mousewheel-amplifcation.

Reproducible: Always




For starters how about the following:

count=number_of_wheel_clicks_in_last_200ms.
if count <= 3,  gain = 1
elif count <= 10, gain = 3    #mousewheel scrolls-by
else, gain=20

Thanks very much .

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