OpenLayers disable dragging

Author: Stoimen

14 Jul

OpenLayers and dragging

If working with OpenLayers you may know how the map by default is with dragging enabled. Even when in the API is said that setCenter() method is taking a forth parameter the boolean dragging it’s actually not working.

setCenter: function(lonlat,
	             zoom,
	             dragging,
	             forceZoomChange)

As described there:

lonlat {OpenLayers.LonLat}
zoom {Integer}
dragging {Boolean} Specifies whether or not to trigger movestart/end events
forceZoomChange {Boolean} Specifies whether or not to trigger zoom change events (needed on baseLayer change)

How to stop the dragging?

It’s simple as stopping the mouse wheel as I writed before. Just add this chunk of code:

for (var i = 0; i< map.controls.length; i++) {
    if (map.controls[i].displayClass ==
                            "olControlNavigation") {
        map.controls[i].deactivate();
    }
}

That works fine and stops the dragging, actually if you’d like to start dragging you must change the deactiveate() part of that code with activate(), which sounds normal.

Filed under: web development

3 Responses for "OpenLayers disable dragging"

Juan Carlos October 21st, 2009 at 12:34 am 1
This post has been really helpfull. From this I can also see what other map behavior I can disable. thanks
Juan Carlos October 21st, 2009 at 1:07 am 2
In order to make an static map with no controls or posibility to move or zoom the map I’ve noticed that some controls need to be disabled but others need to be removed. The code I use to avoid problems is the following:

map = new OpenLayers.Map(‘map’);
var numcontrol=map.controls.length;
for (var i = 0; i< numcontrol; i++) {
map.controls[0].deactivate();
map.removeControl(map.controls[0]);
}
MartinO November 3rd, 2009 at 11:42 pm 3
Thanks Juan Carlos!
That’s exactly what I was looking for…