OpenLayers.Control.UTFGrid

This Control provides behavior associated with UTFGrid Layers.  These ‘hit grids’ provide underlying feature attributes without calling the server (again).  This control allows Mousemove, Hovering and Click events to trigger callbacks that use the attributes in whatever way you need.

The most common example may be a UTFGrid layer containing feature attributes that are displayed in a div as you mouseover.

Example Code

var world_utfgrid = new OpenLayers.Layer.UTFGrid(
    'UTFGrid Layer',
    "http://tiles/world_utfgrid/${z}/${x}/${y}.json"
);
map.addLayer(world_utfgrid);

var control = new OpenLayers.Control.UTFGrid({
    layers: [world_utfgrid],
    handlerMode: 'move',
    callback: function(infoLookup) {
        // do something with returned data

    }
})

Inherits from

• OpenLayers.Control