title: Capturing mousemove for a single layer in OpenLayers
body: <p>How would I listen to mousemove events in OpenLayers 4 that only relate to a single layer, not the whole map?</p>
  
  <p>I have an <code>ol.layer.Image</code> layer with the <code>ol.source.ImageCanvas</code> source. There is a zoom control ("+" and "-" buttons), and attribution ("i" button) on top. I need to only handle events related to the image layer, such as clicks/mouse movements/touch events/..., but ignore events for the other layers, like the zoom control.</p>