Document what is Mouse.left what is Mouse.down what is DragEnum etc.

[Datseris]

So that other people (like me) can help development of the interactive API. At the moment it is something alien that I Can just use through example. This is not the proper way forward...

(finally found Mouse in interaction/iodevices.jl...)

[Datseris]

I am asking of a Documentation of how to use Mouse.down. I have been trying very hard by myself (see Slack) but it didn't work, so I guess a bit more help in the docs is necessary.

[asinghvi17]

Also could use a description of the keyboard enum. Will probably put this in the interaction section...

[asinghvi17]

@SimonDanisch could you give a simple example of using DragEnum? There is edit_polygons but that's a little complicated

[SimonDanisch]

Maybe something like:

function drag_scatter!(scene, scatterplot)
    idx = Ref(0)
    points = scatterplot[1]
    on(events(scene).mousedrag) do drag
        if ispressed(scene, Mouse.right)
            if drag == Mouse.down
                plot, selection = mouse_selection(scene)
                (plot === scatterplot) && (idx[] = selection)
            elseif drag == Mouse.pressed && checkbounds(Bool, points[], idx[])
                pos = mouseposition(scene)
                points[][idx[]] = pos
                points[] = points[]
            end
        else
            idx[] = 0
        end
        return
    end
end


s = scatter(rand(4))
drag_scatter!(s, s[end])
s