Java tutorial
package org.maps.client; /* Copyright 2009, Mike Jacobs Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ import com.google.gwt.maps.client.CopyrightCollection; import com.google.gwt.maps.client.overlay.TileLayerOverlay; public class ImageLayer extends MapOverlayLayer { private GMapCreatorTileLayer tileLayer; public ImageLayer(String layerName, String urlPrefix) { CopyrightCollection cc = new CopyrightCollection("Mine"); tileLayer = new GMapCreatorTileLayer(cc, 0, 11, 6); tileLayer.setUrlPrefix(urlPrefix); TileLayerOverlay overlay = new TileLayerOverlay(tileLayer); setOverlay(overlay); setDisplayName(layerName); } public ImageLayer(String layerName, String urlPrefix, String secondaryURLPrefix) { CopyrightCollection cc = new CopyrightCollection("Mine"); tileLayer = new GMapCreatorTileLayer(cc, 0, 11, 6); tileLayer.setUrlPrefix(urlPrefix); tileLayer.setSecondaryPrefix(secondaryURLPrefix); TileLayerOverlay overlay = new TileLayerOverlay(tileLayer); setOverlay(overlay); setDisplayName(layerName); } public void setOpacity(double aDouble) { tileLayer.setOpacity(aDouble); } }