In Waveform display, make it possible to move the "currently playing this position"-marker

[Dario Ernst]

The current waveform display features a bar in the center that tells the user "this is the part thats currently played back". Everything left of it has already been played, right of it is whats going to be played rather soon. Some users may prefer to have a larger "look-a-head" and care less for what happened in the past. A solution to this might be to make the "currently playing" marker relocatable, so that users could move it to the very left edge, at 25%, at 50% (currently) or maybe even more forward.

[jus (jus)]

In some other soft the position marker moves from left to right over the fixed visible part of the waveform . Once the marker reaches the end of the waveform clip, the waveform flips over to the next part and so does the position marker.

[Dario Ernst (n-launchpad-nebuk-de)]

I'd say thats an additional way of displaying the waveform. So we can maybe now make the request more generic, and say we have 3 waveform displays we want to be able to configure:
- Bar in the Middle
- Bar adjustable
- Cyclic moving bar with constant but changing underlying waveform

Any more ideas while we're at it, thinking up more work for our poor devs? :)

Thanks and Best Regards
-Dario Ernst

[Daniel Schürmann (daschuer)]

It this really a desired version?
- Cyclic moving bar with constant but changing underlying waveform

Of cause it is a CPU saver, but it there a use case for this?

[Dario Ernst (n-launchpad-nebuk-de)]

I'd say there is only a usecase for this because other software has it. People switching from proprietary legacy software to mixxx would/could find themselves more at home that way?

[Daniel Schürmann (daschuer)]

An other aspect it the play position alignment when switching spinies.

[ronso0 (ronso0)]

For FlatNite someone was requesting to shift the PlayPosition marker and I found a workaround on skin level until this is implemented.
Working on 2.1 alpha-pre

Add the snippet below to style.qss and replace 'WaveformContainer' with the actual <ObjectName> of well... the waveforms' container.
Adjust '-123' so it matches your needs: negative values shift marker to the left. If it should shift to the right, probably "margin-right: -AAApx;" should work.

#WaveformContainer {
   margin-left: -123px;
}

[NT Music (ntmusic-deactivatedaccount)]

Moving just the marker is quite easy even in the code (screenshot attached), moving the actual play position (especially using an arbitrary value) looks quite harder.

[NT Music (ntmusic-deactivatedaccount)]

After few more tries found how to move the play position along with the marker. The only thing left is the empty portion of the track (the triangles) is still rendered to the center of the widget, but this should be easy to fix. I suggest to implement 1/4 and 1/2 positions first, not sure if it worth to have more values than that (especially values higher than 1/2).

[Be (be.ing)]

The marker position is totally arbitrary. There is no need to impose artificial limits by only presenting a limited set of options. I think the preference option would be well suited to a slider. There is a finite 0-100% range and the user should be able to choose any value within that.

[NT Music (ntmusic-deactivatedaccount)]

I added a parameter to specify play marker position (range is between 0.0 < pos < 1.0, with 0.5 being the center (default) position).

[NT Music (ntmusic-deactivatedaccount)]

PR #1520

[jus (jus)]

Thanks for the PR, link for reference
https://github.com/mixxxdj/mixxx/pull/1520

In progress = Coding/Review in progress, not merged to target branch yet
Fix committed = Merged to target branch

[Be (be.ing)]

https://github.com/mixxxdj/mixxx/pull/1724

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/7436