I need to handle a zoom event in Open Layers 3.
The following is my code:
map_object = new ol.Map({
target: 'map',
controls: controls_list,
interactions: interactions_list,
overlays: [overlay],
layers: [OSM_raster, WFS_layer],
view: view
});
map_object.on("Zoom", function() {
console.log('Zooming...');
});
This code runs with no errors and shows a map, but there is no output to the console, suggesting this function isn't firing.
I have also tried:
map_object.on("drag", function() {
console.log('Dragging...');
});
And this too does nothing.
Any help as to how to handle map control events in OL3 would be much appreciated (particularly zooming!). Note I have tried 'zoom' as well as 'Zoom' for the type field of the on method.
Just to add to this, you can check variations of events available with 'propertychange', from what I am seeing, there is no explicit .on ('zoom', ...)
but rather you can access 'resolution' and other properties as mentioned in previous comments:
map.getView().on('propertychange', function(e) {
switch (e.key) {
case 'resolution':
console.log(e.oldValue);
break;
}
});