[Map] Enable Zoom with scroll wheel

[pickypg]

We should enable scrolling with the mouse wheel, like every other map out there.

Minor Downside: in a large dashboard, if you quickly scroll down it and end up with your mouse over the map, then you may end up zooming in/out on it. This is an edge case though and I think normal map behavior trumps accidental scrolling.

[epixa]

I don't think that's an edge case... I can't really imagine a scenario where a person won't encounter that behavior on any sizable dashboard. I suspect that's why it existed in the first place.

[Bargs]

I tend to agree with @epixa here. Saved searches or doc tables (or maybe both?) exhibit the same issue, and I find it really annoying when trying to scroll through a dashboard.

[pickypg]

I guess I'm just a more focused scroller. :)

Maybe we should make it so that this is toggle-able (via the UI and a checkbox). But possibly we should come up with a solution that applies to all of them? Perhaps when you're scrolling the page outside, it can disable scrolling inside of any of those problem areas (maps included) for a hundred ms (or so) to stop users from accidentally scrolling there?

People that are used to mapping applications are used to scrolling in a map with the mouse wheel. I actually find it very bizarre not having it. It's like a touch screen computer with the touch screen disabled.

[Bargs]

Yeah that's not a bad idea. I wonder if we could just enable scrolling when the map is in "focus", e.g. when the user has clicked, dragged, or otherwise interacted with the map in some way already.

[pickypg]

To flesh out my idea a little more, if we start scrolling on the page, then maybe we can overlay an invisible <div> over the scrollable visualizations and only remove them after some humanly unnoticeable, but friendly timeout? I've never actually tried it, but I suspect it works.

[meenalluktuke]

+1

[kayrus]

We already parse tilemap options and at first glance it is easy to implement an option for scrollWheelZoom

[thomasneirynck]

+1

[jbudz]

Related #2645