CODEWITHSUNDEEP
google-mapsgoogle-maps-api-3
markzzz
markzzz

Reputation: 48025

Check if "zoom_changed" is fired by mouse/google tool?

I'd like to know if the zoom is changed because user change it from mouse/google zoom tool (top left of the map, the zoomControl) or just if change after some functions of google (like directionsDisplay.setDirections, or bounds) :

google.maps.event.addListener(map, 'zoom_changed', function () {
    if (CONDITION) {

    }
});

Is it possible?

Upvotes: 0

Views: 263

Answers (2)

Gady
Gady

Reputation: 4995

You probably want to listen for the idle event, which is a "catch all" event, fired after the user pans or zooms (and it's fired only once). There is also a zoom_changed event, fired when the zoom level changes. See all Map events here.

I'm not aware of a way to "know" if the zooming is from user intervention or from a Google Maps API function, without at least building a custom zoom control.

Upvotes: 0

geocodezip
geocodezip

Reputation: 161404

You can detect if the zoom has changed based on an action your program has taken by setting a global flag when it performs an action that changes the zoom, clear it when that action is complete (either in the zoom_changed event handler or the idle event handler).

If your flag isn't set, the zoom was caused by a user action.

Upvotes: 2

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