Comment 23 for bug 367151

After some more testing: waveform_zoom works for me only with knobs like in your example, but not with sliders and buttons.

* Imo a knob is the most impractical control for this purpose. More practical world be sliders or buttons. Also this would allow to map zoom-in /zoom-out easily to the keyboard for mouse free operation which is preferable while performing.
* We should extend our zoom range. It is fair to say that there are good use cases for zooming in more closely ( e.g. when preparing tracks, setting cuepoints) and zooming far out (e.g. when waveform widget is relatively small because of screen size)
Xwax allows to zoom x10 / ÷10 which is very handy sometimes and many competitors do it in a similar way (some use steps of two).
* Imo It is absolutely fine that waveform_zoom works not seamless but in steps.

The crash i mentioned in #21 was unrelated to waveform_zoom (see lp:979925).