CODEWITHSUNDEEP
javascriptgoogle-mapscenter
Charleshaa
Charleshaa

Reputation: 2238

Recenter a Google map after container changed width

I have a google map set with the Javascript API V3. It's displayed in a div with a dynamic width, as a content pane slides up when we click on a marker.

Everything works fine, but one thing: When the pane slides up, the width of the map is changed, and so the center is displaced to the right (the pane is on the left). It is really inconvienient especially for small resolutions, where you can't even see the center after the pane is open.

I've tried the 'resize' trigger, but it doesn't seem to work... Any ideas ?

Thanks a lot !

Upvotes: 34

Views: 47163

Answers (4)

omarello
omarello

Reputation: 2693

Calling resize by it self will not acheive what you need.

What you need to do is first (before a resize occurs) get the current center of the map

var currCenter = map.getCenter();

Then you need to do something like the following, after your div is resized.

google.maps.event.trigger(map, 'resize');
map.setCenter(currCenter);

Should do the trick

UPDATE 2018-05-22

With a new renderer release in version 3.32 of Maps JavaScript API the resize event is no longer a part of Map class.

The documentation states

When the map is resized, the map center is fixed

  • The full-screen control now preserves center.

  • There is no longer any need to trigger the resize event manually.

source: https://developers.google.com/maps/documentation/javascript/new-renderer

google.maps.event.trigger(map, "resize"); doesn't have any effect starting from version 3.32

Upvotes: 87

Tyler Rafferty
Tyler Rafferty

Reputation: 3428

First set a variable for the current center, then use a event listener to detect a resize, and thusly set center. 

//Get current center
var getCen = map.getCenter();

//Use event listener for resize on window
google.maps.event.addDomListener(window, 'resize', function() {
   //Set Center
   map.setCenter(getCen);
});

Upvotes: 18

Jose Rocha
Jose Rocha

Reputation: 1115

Hy there try this ;)

On map initialization

var currentMapCenter = null; 
google.maps.event.addListener(map, 'resize', function () {
    currentMapCenter = map.getCenter();
});

google.maps.event.addListener(map, 'bounds_changed', function () {
    if (currentMapCenter) {
    // react here
        map.setCenter(currentMapCenter);
    }
    currentMapCenter = null;
});

After this just call when tou want the map resize.

google.maps.event.trigger(map, 'resize');

Upvotes: 2

ericjam
ericjam

Reputation: 1519

omarello does work but I can't upvote it. You probably forgot to refer to the var that defines your center coordinates. All "resize" does is pull the divs current width and height, it does not change anything about the map--yet!

var center = new google.maps.LatLng(39.5, -98.3);

$(document).ready(function() { 
    $("#fullsize").click(function(e) { 
        e.preventDefault();
        $("#map_canvas").css({ 
            width: '1000px'});
        google.maps.event.trigger(map, "resize"); 
        map.setCenter(center);
        }); 
    });

Upvotes: 7

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