Google Maps v3: Enforcing min. zoom level when using fitBounds

Question

I\'m drawing a series of markers on a map (using v3 of the maps api).

In v2, I had the following code:

  bounds = new GLatLngBounds();

  ... loop th         


        

Answer 1

At this discussion on Google Groups I discovered that basically when you do a fitBounds, the zoom happens asynchronously so you need to capture the zoom and bounds change event. The code in the final post worked for me with a small modification... as it stands it stops you zooming greater than 15 completely, so used the idea from the fourth post to have a flag set to only do it the first time.

// Do other stuff to set up map
var map = new google.maps.Map(mapElement, myOptions);
// This is needed to set the zoom after fitbounds, 
google.maps.event.addListener(map, 'zoom_changed', function() {
    zoomChangeBoundsListener = 
        google.maps.event.addListener(map, 'bounds_changed', function(event) {
            if (this.getZoom() > 15 && this.initialZoom == true) {
                // Change max/min zoom here
                this.setZoom(15);
                this.initialZoom = false;
            }
        google.maps.event.removeListener(zoomChangeBoundsListener);
    });
});
map.initialZoom = true;
map.fitBounds(bounds);

Hope that helps,

Anthony.