Video single frame annotation

[aneust]

Add a settings option to the video annotation tool to automatically finish new annotations after the first frame

• Add button to settings
• Add description in manual
• Disabled "Finish" and "Track Annotation" control buttons, when option is activated
• Prevented double-click behavior for point annotations

closes #786

[mzur]

@aneust Was this closed on purpose?

[aneust]

@mzur Closed on purpose, Leane found some strange behavior I first could not reproduce. Think now it was caused by the settings.

[mzur]

Ok, thanks. You could also keep this as a Draft PR while you keep working on the issue.

[lehecht]

Regarding the issue with the sketch lines:
The sketch lines don't disappear, because finishDrawAnnotation is called before the annotation could be completely added to this.pendingAnnotationSource. You need to use this.pendingAnnotationSource.once('addfeature', this.finishDrawAnnotation); here. It calls finishDrawAnnotation after the annotation was added to that source.
I hope it helps. If there is still or another problem, let me know!

[aneust]

@lehecht Thanks, that was helpful!

[lehecht]

Looks good to me now. Please request a review from @mzur.

[mzur]

I saw the mention and self-requested the review 😉 @lehecht You can also request the review from me when you are done.

[mzur]

Two comments about the UI:

• The setting doesn't affect whole-frame annotations but it should.

• To be more user-friendly, the "finish annotation" and "track annotation" buttons (which are disabled) could get titles like "Disable the single-frame annotation option to create multi-frame annotations" ("Disable the single-frame annotation option to track annotations"). This way users are reminded of what to do if they want to use the buttons again. You could implement this with v-if showing a completely different set of buttons which are always disabled and have the new title.

Otherwise it works great. See some comments about the code below.

[mzur]

While the setting now affects whole frame annotations, I can't create these any more. The tool is activated but I no longer have a way to "finish" it. When the setting is activated, the whole frame annotation should be immediately created when the button is clicked.

Apart from that, only minor comments are left.

[mzur]

One last general comment:

When the new settings option is active, the title text of the buttons still reads "Start a point annotation", "Start a rectangle annotation", etc. It should change to something similar to the image annotation tool ("Set a point", "Draw a rectangle", ...).

[mzur]

All good now, thanks!