com.google.gwt.maps.sample.hellomaps.client.AnimateDemo.java Source code

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Here is the source code for com.google.gwt.maps.sample.hellomaps.client.AnimateDemo.java

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/*
 * 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.user.client.Timer;
import com.google.gwt.user.client.ui.HTML;

/**
 * The following example displays a map, waits two seconds, and then pans to a
 * new center point.
 * 
 * The panTo method centers the map at a given point. If the specified point is
 * in the visible part of the map, then the map pans smoothly to the point; if
 * not, the map jumps to the point.
 */
public class AnimateDemo 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. "
            + "You should be able to scroll the viewport by clicking and dragging " + "with the mouse.</p>\n"
            + "<p>After one second, the map will automatically scroll " + "diagonally.</p>\n"
            + "<p>Equivalent to the Maps JavaScript API Example: "
            + "<a href=\"http://code.google.com/apis/maps/documentation/examples/map-animate.html\">"
            + "http://code.google.com/apis/maps/documentation/examples/map-animate.html</a></p>\n";

    public static MapsDemoInfo init() {
        return new MapsDemoInfo() {
            @Override
            public MapsDemo createInstance() {
                return new AnimateDemo();
            }

            @Override
            public HTML getDescriptionHTML() {
                if (descHTML == null) {
                    descHTML = new HTML(descString);
                }
                return descHTML;
            }

            @Override
            public String getName() {
                return "Map Movement and Animation";
            }
        };
    }

    private MapWidget map;

    private final LatLng start = LatLng.newInstance(37.4419, -122.1419);

    private final LatLng end = LatLng.newInstance(37.4569, -122.1569);

    public AnimateDemo() {
        map = new MapWidget(start, 13);
        map.setSize("500px", "300px");
        initWidget(map);
    }

    @Override
    public void onShow() {
        map.setCenter(start);
        new Timer() {
            @Override
            public void run() {
                map.panTo(end);
            }
        }.schedule(1000);
    }
}