Header Graph: use mouse for scrolling

[hogi]

What inspired this wish list request? 

With the small icon the left, a user can open heder graphs on top of the data table which show histograms of the available entries.
Sometimes, with too many distinct entries in a column, the header graph is too small to show all values.

Then the user can increase the size of the header graph - but this reduces the space for the actual data table.

What is the improvement you would like to see? 

When the mouse is on the header graph, please add a possibility to scroll though the entries of the header graph - instead of scrolling through the data table:

Why is this idea important? 

not important.

more wishes submitted by  

[Halts_Maulwurf]

For a scrollable list my workaround is the following: Rightclick in the histogram -> "Open in distribution". There you can scroll through the containing items