MapEventsOverlay.java

package com.mutu.mapapi.search.overlays;

import com.mutu.mapapi.api.IGeoPoint;
import com.mutu.mapapi.views.MapView;
import com.mutu.mapapi.views.MapView.Projection;
import com.mutu.mapapi.views.overlay.Overlay;
import android.content.Context;
import android.graphics.Canvas;
import android.view.MotionEvent;

/**
 * Empty overlay than can be used to detect events on the map, 
 * and to throw them to a MapEventsReceiver. 
 * @see MapEventsReceiver
 * @author M.Kergall
 */
public class MapEventsOverlay extends Overlay {

	private MapEventsReceiver mReceiver;
	
	/**
	 * @param ctx the context
	 * @param receiver the object that will receive/handle the events. 
	 * It must implement MapEventsReceiver interface. 
	 */
	public MapEventsOverlay(Context ctx, MapEventsReceiver receiver) {
        super(ctx);
		mReceiver = receiver;
    }

	@Override protected void draw(Canvas c, MapView osmv, boolean shadow) {
		//Nothing to draw
	}
	
	@Override public boolean onSingleTapUp(MotionEvent e, MapView mapView){
		Projection proj = mapView.getProjection();
		IGeoPoint p = proj.fromPixels(e.getX(), e.getY());
		return mReceiver.singleTapUpHelper(p);
	}
	
	@Override public boolean onLongPress(MotionEvent e, MapView mapView) {
		Projection proj = mapView.getProjection();
		IGeoPoint p = proj.fromPixels(e.getX(), e.getY());
		//throw event to the receiver:
		return mReceiver.longPressHelper(p);
    }

}