/*
* Copyright 2008 Google Inc.
*
* 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.
*/
package com.google.gwt.maps.sample.hellomaps.client;
import com.google.gwt.maps.client.MapWidget;
import com.google.gwt.maps.client.geom.LatLng;
import com.google.gwt.maps.client.geom.LatLngBounds;
import com.google.gwt.maps.client.geom.Point;
import com.google.gwt.maps.client.geom.Size;
import com.google.gwt.maps.client.overlay.Icon;
import com.google.gwt.maps.client.overlay.Marker;
import com.google.gwt.maps.client.overlay.MarkerOptions;
import com.google.gwt.user.client.ui.HTML;
/**
* This example creates a new type of icon, using the <a
* href="http://labs.google.com/ridefinder">Google Ride Finder</a> "mini"
* markers as an example. We have to specify the foreground image, the shadow
* image, and the points at which we anchor the icon to the map and anchor the
* info window to the icon.
*/
public class IconDemo extends MapsDemo {
private static HTML descHTML = null;
private static final String descString = "<p>Creates a 500 x 300 pixel map viewport centered on Palo Alto, CA USA.</p>"
+ "<p>Displays a new type of icon (mini marker) at random points"
+ "inside the maps viewport.</p>\n"
+ "<p>Equivalent to the Maps JavaScript API Example: "
+ "<a href=\"http://code.google.com/apis/maps/documentation/examples/icon-simple.html\">"
+ "http://code.google.com/apis/maps/documentation/examples/icon-simple.html</a></p>\n";
public static MapsDemoInfo init() {
return new MapsDemoInfo() {
@Override
public MapsDemo createInstance() {
return new IconDemo();
}
@Override
public HTML getDescriptionHTML() {
if (descHTML == null) {
descHTML = new HTML(descString);
}
return descHTML;
}
@Override
public String getName() {
return "Creating Icons";
}
};
}
private MapWidget map;
public IconDemo() {
map = new MapWidget(LatLng.newInstance(37.4419, -122.1419), 13);
map.setSize("500px", "300px");
initWidget(map);
map.setUIToDefault();
}
@Override
public void onShow() {
map.clearOverlays();
// Create our "tiny" marker icon
Icon icon = Icon.newInstance(
"http://labs.google.com/ridefinder/images/mm_20_red.png");
icon.setShadowURL("http://labs.google.com/ridefinder/images/mm_20_shadow.png");
icon.setIconSize(Size.newInstance(12, 20));
icon.setShadowSize(Size.newInstance(22, 20));
icon.setIconAnchor(Point.newInstance(6, 20));
icon.setInfoWindowAnchor(Point.newInstance(5, 1));
// Add 10 markers to the map at random locations
LatLngBounds bounds = map.getBounds();
LatLng southWest = bounds.getSouthWest();
LatLng northEast = bounds.getNorthEast();
double lngSpan = northEast.getLongitude() - southWest.getLongitude();
double latSpan = northEast.getLatitude() - southWest.getLatitude();
MarkerOptions options = MarkerOptions.newInstance();
options.setIcon(icon);
for (int i = 0; i < 10; i++) {
LatLng point = LatLng.newInstance(southWest.getLatitude() + latSpan
* Math.random(), southWest.getLongitude() + lngSpan * Math.random());
map.addOverlay(new Marker(point, options));
}
}
}