Enabled clicking on abacus beads to move it #146

[aditigupta17]

Earlier, the user had to drag the beads, now a single click sends the beads up and double-clicking on them brings them down.

[llaske]

Nice work but using double-click is a problem because it will not work on touch screen.
Another idea ?

[aditigupta17]

Oh yeah, didn't see that..any suggestions from your side?

[aditigupta17]

I just tried, it works well on touch screen as well, just double-tapping the bead is causing it to move down.

[llaske]

Hmmm. Not sure double-tap is a intuitive gesture on touch screens.
Is there a way to compute automatically (by deduction) the direction expected by an user ? A sort of AI that could know that when you click it's for move up or down.
If it's possible to do that without any error, let's try this. Else we could propose an automatic move on click/tap when there is no doubt about the direction expected and let the drag gesture when it's not possible to do the deduction.
What do you think?

[aditigupta17]

Ya, the latter sounds good. Working on it.

[ghost]

Is there any other behavior associated with a single click or a touch (long or short) on a bead beyond moving it?

[aditigupta17]

According to the changes made in the PR, a single click/tap should send the bead up and double click/double tap moves it down.

[ghost]

On Sun, Mar 04, 2018 at 03:01:11AM -0800, Aditi Gupta wrote: According to the changes made in the PR, a single click/tap should send the bead up and double click/double tap moves it down.

OK. I'm just wondering why not make a single click do both? Or rather, the only option in either direction is "move to the other position." So why use one for one direction and the other for the other direction?

[aditigupta17]

There are a few types of abacii, (like the one shown in the gif) in which beads can move in either direction. So to differentiate that, different gestures are needed.

[llaske]

Thanks all for your analysis. So my first intuition is the right: we could propose an automatic move on click/tap when there is no doubt about the direction expected and let the drag gesture - since double-tap is not intuitive - when it's not possible to do the deduction.

[llaske]

Fixed by #277