[Feature] Draggable Legends

[JJGOD-13]

What problem does this feature solve?

Currently there doesn't seem to be any option for the legend items to be 'user-interactive' i.e. The chart user can't move them around, or resize the legend.

Being able to reposition the legend is useful for occasions where the legend has to be included in the Axis and when there is limited space to put the legend.

What does the proposed API look like?

Ideally some sort of draggable or userInteractive toggle on the Legend class. So that you can do something like:

legend: [
  {
    draggable: true, // <--- Like that?
    orient: "vertical",
    top: POS_FROM_TOP_LEGEND,
    left: "2%",
    itemWidth: 10,
  },
]

[helgasoft]

Dragging would have been simple if the legend component supported mouseup and mousedown events, like series.
Here is (an ugly) workaround using Zrender dblclick to reposition the legend - Demo.

[JJGOD-13]

Thank you so much for the demo. I guess the functionality is possible then. Do you know if there are ny plans to add the mouseup and mousedown events to the legend class?

[helgasoft]

Well, v.6.1.0 is about to be released, so it is up to the developers to decide whether to include it in subsequent releases.