/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 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.example.gwt.client.samples.controller;
import org.geomajas.example.gwt.client.samples.base.SamplePanel;
import org.geomajas.example.gwt.client.samples.base.SamplePanelFactory;
import org.geomajas.example.gwt.client.samples.i18n.I18nProvider;
import org.geomajas.gwt.client.controller.AbstractCircleController;
import org.geomajas.gwt.client.util.DistanceFormat;
import org.geomajas.gwt.client.widget.MapWidget;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.layout.VLayout;
/**
* <p>
* Sample that shows how a CircleController can be added to the map and acted upon. In this sample the CircleController
* is used as a tool to measure an area.
* </p>
*
* @author Pieter De Graef
*/
public class CircleControllerSample extends SamplePanel {
public static final String TITLE = "CircleController";
public static final SamplePanelFactory FACTORY = new SamplePanelFactory() {
public SamplePanel createPanel() {
return new CircleControllerSample();
}
};
/**
* @return The viewPanel Canvas
*/
public Canvas getViewPanel() {
VLayout layout = new VLayout();
layout.setWidth100();
layout.setHeight100();
// Create the map, using the wmsMap configuration (mapWms.xml):
final MapWidget map = new MapWidget("mapWms", "gwt-samples");
/**
* Define a AbstractCircleController that calculates the size of the selected area and outputs it.
*
* @author Pieter De Graef
*/
class CircleAreaController extends AbstractCircleController {
public CircleAreaController(MapWidget mapWidget) {
super(mapWidget);
}
/** onMouseUp: calculate circle area, and print it. */
protected void onCircleReady() {
// Get the circle radius in map units, and calculate the area:
double radius = getWorldRadius();
double circleArea = Math.PI * radius * radius;
// Transform the area from map units, to a readable format (km, mile, ...)
String area = DistanceFormat.asMapLength(map, circleArea);
SC.say(I18nProvider.getSampleMessages().circleControllerOutput(area));
}
}
// Apply the CircleAreaController onto the map:
map.setController(new CircleAreaController(map));
layout.addMember(map);
return layout;
}
public String getDescription() {
return I18nProvider.getSampleMessages().circleControllerDescription();
}
public String getSourceFileName() {
return "classpath:org/geomajas/example/gwt/client/samples/controller/CircleControllerSample.txt";
}
public String[] getConfigurationFiles() {
return new String[] { "WEB-INF/layerWmsBluemarble.xml", "WEB-INF/mapWms.xml" };
}
public String ensureUserLoggedIn() {
return "luc";
}
}