(usability) Waveform prefs: group options, adjust tabstops, reorder ui file

[ronso0]

This improves usability in the waveform preferences by grouping the options:
Waveforms / Overview / Caching /OpenGl info

The checkbox
[ ] Enabled
looks a bit weird in the 2nd column. Could as well be
Enabled [ ] (in 1st column)

Note:
Unfortunately there is an issue with QGroupBox: it seems to have some minimal height which is not reached with 3 items, which in turn unnecessarily expands the group box. A spacer at the bottom of the page fixes this, downside is the extra space at the bottom (didn't manage to minimize that..)

[Swiftb0y]

can't really comment much on the ui file changes but ur in the expert in that anyways so there is not much to argue here

[Swiftb0y]

LGTM. thank you. Does anyone want to look at the ui file?

[daschuer]

Thank you. This is already an improvement.

Here some comments:

• The Group box lable "Wavform" can become "Scrolling Wavewform" or such, to better distinguished it from the "Waveform Overview".
• The checkboxes around the Waveform comobox are looking spreaded. Can we put the m all in one line?
• The title column in both group boxes are not aligned.
• If you disable the waveforms, it feels random what is grayed out and what not. In addition the hint about missing accelerations appears. Do we need to gray out anything at all? In case of a crashing config, the user may want to keep the checkbox disabled, adjust the settings an than enable.

If you prefer to merge it as it is, just give a hint.

[ronso0]

The title column Type labels in both group boxes are not aligned.

Fixed.

[ronso0]

If you disable the waveforms, it feels random what is grayed out and what not. In addition the hint about missing accelerations appears.

I torn about this.
I think it unused / inapplicable options shoud indeed be grayed out. About the 'Requires acceleration' hint: I implemented that approach for the skin settings in LateNight, but these hints are overlays there and don't change the layout.

Therefore, IMO all (scrolling) waveform options should be grayed out.
Except... the Visual Gain settings, since they're also applied to the overviews if normalization is disabled.
(which I noticed just now, after using Mixxx for almost ten years 😆 )
I think we should add a hint in the overview group.

[ronso0]

The Group box lable "Wavform" can become "Scrolling Wavewform" or such, to better distinguished it from the "Waveform Overview".

Yep, fixed.

[ronso0]

The checkboxes around the Waveform comobox are looking spreaded. Can we put the m all in one line?

Fixed.