Add drag events to Symbol

[pamtbaau]

Feature Description

Symbols can be marked as draggable and can be dragged around in the Map.

However, there is no option to add a callback to catch the dragging. I would love to see events like for example dragStart and dragEnd.

Describe alternatives you've considered

I've tried to add Features instead of Symbols, because there is a MapLibreMapController.onFeatureDrag.add(), but unfortunately, Features appear not to be draggable in the Map and the drag callback is never being called.

Additional context

No response

[elliotrtd]

@pamtbaau Just figured I'd let you know the solution I found for this (maybe you found something better but I've seen a few posts about this on both MapLibre and MapBox).

For me I wrapped my Map in a GestureDector widget, and then I used the onPanEnd function to detect when movement has stopped.

When the movement stops I query the ID of the symbol that I care about and get its co-ordninates.

[pamtbaau]

@elliotrtd That's much appreciated.

As development of flutter-maplibre feels a bit sluggish I'm afraid it will not be a flourishing and stable library to base an application upon. I've given it a try because it's the only library I found that supports free "aerial" maps.

[elliotrtd]

@pamtbaau I have to admit I'm in much the same boat in terms of giving it a try. I do however appreciate that it is an "official" package which supports both web and mobile. With the paid competitor it was a third party package which whilst well done - was not perfect.