Re: mouse zoom centred on mouse position.

[Tait <gnu...@t4...>]

> I would propose to revise mouse zooming to comply more with that used in map
> software (maps.google.com, mapy.cz etc.). Thus:
> - mouse wheel zooms around current mouse position (it could zoom around
>   center if mouse is outside graph border)
> - Shift-wheel would move graph up/down (as now without Shift)
> - Ctrl-wheel would move graph left/right (now with Shift)

I'm used to shift+scrollwheel adjusting altitude, ctrl+scrollwheel
adjusting azimuth, and meta or alt+scrollwheel being zoom. In a 2D
environment, I suppose there's some logical sense to altitude being
vertical scroll and azimuth being horizontal scroll, but this overlaps
with the normal unmodified use of the scrollwheel for vertical and
horizontal scrolling. (On mice without a horizontal scrollwheel axis,
I guess just vertical scrolling?)

For consistency, wouldn't we want similar bindings for the arrow keys?