MapGestureDetectorOverlay.java

package eu.hellek.viajafacil.android.map;

import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;

import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;

/*
 * used together with MyOnGestureListener to allow long-pressing map to set position
 */
public class MapGestureDetectorOverlay extends Overlay implements OnGestureListener {
	private GestureDetector gestureDetector;
	private OnGestureListener onGestureListener;

	public MapGestureDetectorOverlay() {
		gestureDetector = new GestureDetector(this);
	}

	public MapGestureDetectorOverlay(OnGestureListener onGestureListener) {
		this();
		setOnGestureListener(onGestureListener);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event, MapView mapView) {
		if (gestureDetector.onTouchEvent(event)) {
			return true;
		}
		return false;
	}

	@Override
	public boolean onDown(MotionEvent e) {
		if (onGestureListener != null) {
			return onGestureListener.onDown(e);
		}
		return false;
	}

	@Override
	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {
		if (onGestureListener != null) {
			return onGestureListener.onFling(e1, e2, velocityX, velocityY);
		}
		return false;
	}

	@Override
	public void onLongPress(MotionEvent e) {
		if (onGestureListener != null) {
			onGestureListener.onLongPress(e);
		}
	}

	@Override
	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
			float distanceY) {
		if (onGestureListener != null) {
			onGestureListener.onScroll(e1, e2, distanceX, distanceY);
		}
		return false;
	}

	@Override
	public void onShowPress(MotionEvent e) {
		if (onGestureListener != null) {
			onGestureListener.onShowPress(e);
		}
	}

	@Override
	public boolean onSingleTapUp(MotionEvent e) {
		if (onGestureListener != null) {
			onGestureListener.onSingleTapUp(e);
		}
		return false;
	}

	public boolean isLongpressEnabled() {
		return gestureDetector.isLongpressEnabled();
	}

	public void setIsLongpressEnabled(boolean isLongpressEnabled) {
		gestureDetector.setIsLongpressEnabled(isLongpressEnabled);
	}

	public OnGestureListener getOnGestureListener() {
		return onGestureListener;
	}

	public void setOnGestureListener(OnGestureListener onGestureListener) {
		this.onGestureListener = onGestureListener;
	}
}