Java tutorial
/* * This is part of Geomajas, a GIS framework, http://www.geomajas.org/. * * Copyright 2008-2014 Geosparc nv, http://www.geosparc.com/, Belgium. * * The program is available in open source according to the GNU Affero * General Public License. All contributions in this program are covered * by the Geomajas Contributors License Agreement. For full licensing * details, see LICENSE.txt in the project root. */ package org.geomajas.gwt2.plugin.tms.example.client.sample; import com.google.gwt.core.client.Callback; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.ParagraphElement; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.http.client.UrlBuilder; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.DecoratorPanel; import com.google.gwt.user.client.ui.ResizeLayoutPanel; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import org.geomajas.gwt2.client.GeomajasImpl; import org.geomajas.gwt2.client.GeomajasServerExtension; import org.geomajas.gwt2.client.animation.LinearTrajectory; import org.geomajas.gwt2.client.animation.NavigationAnimationFactory; import org.geomajas.gwt2.client.map.MapPresenter; import org.geomajas.gwt2.client.map.View; import org.geomajas.gwt2.client.map.ZoomOption; import org.geomajas.gwt2.example.base.client.sample.SamplePanel; import org.geomajas.gwt2.plugin.tms.client.TmsClient; import org.geomajas.gwt2.plugin.tms.client.configuration.ListTileMapInfo; import org.geomajas.gwt2.plugin.tms.client.configuration.TileMapInfo; import org.geomajas.gwt2.plugin.tms.client.configuration.TileMapServiceInfo; import org.geomajas.gwt2.plugin.tms.client.layer.TmsLayer; /** * ContentPanel that demonstrates rendering abilities in world space with a map that supports resizing. * * @author Pieter De Graef */ public class CapabilitiesPanel implements SamplePanel { /** * UI binder for this widget. * * @author Pieter De Graef */ interface MyUiBinder extends UiBinder<Widget, CapabilitiesPanel> { } private static final MyUiBinder UI_BINDER = GWT.create(MyUiBinder.class); private static final String USE_PROXY = "d/proxy?url="; private MapPresenter mapPresenter; @UiField protected ResizeLayoutPanel mapPanel; @UiField protected VerticalPanel layerList; @UiField protected ParagraphElement capaUrl; public Widget asWidget() { Widget layout = UI_BINDER.createAndBindUi(this); // Create the mapPresenter and add an InitializationHandler: mapPresenter = GeomajasImpl.getInstance().createMapPresenter(); mapPresenter.setSize(480, 480); // Define the whole layout: DecoratorPanel mapDecorator = new DecoratorPanel(); mapDecorator.add(mapPresenter.asWidget()); mapPanel.add(mapDecorator); // Initialize the map, and return the layout: GeomajasServerExtension.getInstance().initializeMap(mapPresenter, "gwt-app", "mapEmpty"); capaUrl.setInnerHTML(getCapaUrl()); return layout; } @UiHandler("goBtn") protected void onGetCapabilitiesClicked(ClickEvent event) { getCapabilities(); } private void getCapabilities() { // First clear the panel and the map: mapPresenter.getLayersModel().clear(); layerList.clear(); TmsClient.getInstance().getTileMapService(/*USE_PROXY +*/ getCapaUrl(), new Callback<TileMapServiceInfo, String>() { @Override public void onSuccess(TileMapServiceInfo result) { for (final ListTileMapInfo tileMap : result.getTileMaps()) { // Only add layers using LatLon: if ("EPSG:4326".equalsIgnoreCase(tileMap.getSrs())) { CheckBox layerBox = new CheckBox(tileMap.getTitle()); layerBox.addValueChangeHandler(new ValueChangeHandler<Boolean>() { @Override public void onValueChange(ValueChangeEvent<Boolean> event) { if (event.getValue()) { addLayer(tileMap); } else { mapPresenter.getLayersModel().removeLayer(tileMap.getTitle()); } } }); layerList.add(layerBox); } } } @Override public void onFailure(String reason) { Window.alert("We're very sorry, but something went wrong: " + reason); } }); } private void addLayer(ListTileMapInfo tileMap) { TmsClient.getInstance().getTileMap(USE_PROXY + tileMap.getHref(), new Callback<TileMapInfo, String>() { @Override public void onSuccess(TileMapInfo result) { TmsLayer layer = TmsClient.getInstance().createLayer(result); mapPresenter.getLayersModel().addLayer(layer); // Now animate-zoom to the layer bounding box: View beginView = mapPresenter.getViewPort().getView(); View endView = mapPresenter.getViewPort().asView(result.getBoundingBox(), ZoomOption.FREE); mapPresenter.getViewPort().registerAnimation(NavigationAnimationFactory.create(mapPresenter, new LinearTrajectory(beginView, endView), 500)); } @Override public void onFailure(String reason) { Window.alert("We're very sorry, but something went wrong: " + reason); } }); } private String getCapaUrl() { UrlBuilder builder = Window.Location.createUrlBuilder(); String url = builder.buildString(); int pos = url.indexOf("index.html"); url = url.substring(0, pos) + "tms_capa.xml"; return url; } }