cleanup: MarkerLayer, add simple ItemizedLayer constructor

vtm/src/org/oscim/layers/marker/ItemizedLayer.java

@@ -21,6 +21,7 @@
  */
 package org.oscim.layers.marker;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.oscim.core.BoundingBox;
@@ -41,17 +42,25 @@ public class ItemizedLayer<Item extends MarkerItem> extends MarkerLayer<Item>
 	protected OnItemGestureListener<Item> mOnItemGestureListener;
 	protected int mDrawnItemsLimit = Integer.MAX_VALUE;
 
+	public ItemizedLayer(Map map, MarkerSymbol defaulMarker) {
+		this(map, new ArrayList<Item>(), defaulMarker, null);
+	}
+
 	public ItemizedLayer(Map map, List<Item> list,
 	        MarkerSymbol defaultMarker,
-	        OnItemGestureListener<Item> onItemGestureListener) {
+	        OnItemGestureListener<Item> listener) {
 
 		super(map, defaultMarker);
 
 		mItemList = list;
-		mOnItemGestureListener = onItemGestureListener;
+		mOnItemGestureListener = listener;
 		populate();
 	}
 
+	public void setOnItemGestureListener(OnItemGestureListener<Item> listener) {
+		mOnItemGestureListener = listener;
+	}
+
 	@Override
 	protected Item createItem(int index) {
 		return mItemList.get(index);

vtm/src/org/oscim/layers/marker/MarkerRenderer.java

@@ -29,11 +29,6 @@ import org.oscim.renderer.elements.SymbolLayer;
 import org.oscim.utils.TimSort;
 import org.oscim.utils.geom.GeometryUtils;
 
-//TODO
-//- need to sort items back to front for rendering
-//- and to make this work for multiple overlays
-//a global scenegraph is probably required.
-
 public class MarkerRenderer extends ElementRenderer {
 
 	protected final MarkerSymbol mDefaultMarker;
@@ -41,21 +36,22 @@ public class MarkerRenderer extends ElementRenderer {
 	private final SymbolLayer mSymbolLayer;
 	private final float[] mBox = new float[8];
 	private final MarkerLayer<MarkerItem> mMarkerLayer;
+	private final Point mMapPoint = new Point();
+
 	/** increase view to show items that are partially visible */
 	protected int mExtents = 100;
+
+	/** flag to force update of markers */
 	private boolean mUpdate;
 
 	private InternalItem[] mItems;
 
-	private final Point mMapPoint = new Point();
-
 	static class InternalItem {
 		MarkerItem item;
 		boolean visible;
 		boolean changes;
 		float x, y;
 		double px, py;
-
 		float dy;
 
 		@Override
@@ -192,6 +188,10 @@ public class MarkerRenderer extends ElementRenderer {
 		}
 	}
 
+	public void update() {
+		mUpdate = true;
+	}
+
 	static TimSort<InternalItem> ZSORT = new TimSort<InternalItem>();
 
 	public static void sort(InternalItem[] a, int lo, int hi) {
@@ -223,10 +223,6 @@ public class MarkerRenderer extends ElementRenderer {
 		}
 	};
 
-	public void update() {
-		mUpdate = true;
-	}
-
 	//	/**
 	//	 * Returns the Item at the given index.
 	//	 *