Whoops -- forgot to remove old mouseExited
Whoops, graph *controller* tracks location
... and it's setPointerLocation, not "Cursor"
Also, inputAreaMouseMove should get clipped coords
WIP on tooltip view using new logic
Fix should-show logic
Let graph controller keep track of hovered point
Unhover point if it's destroyed
track current pointer coordinates
Improve data point hover treatment
Fix graphview
Fixup tooltip view handling of right edge
Fixup handling of mousemove events