Package org.geomajas.example.gwt.client.samples.controller

Source Code of org.geomajas.example.gwt.client.samples.controller.MouseMoveListener

/*
* 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.geometry.Coordinate;
import org.geomajas.gwt.client.controller.listener.AbstractListener;
import org.geomajas.gwt.client.controller.listener.ListenerEvent;
import org.geomajas.gwt.client.widget.MapWidget;

import com.google.gwt.i18n.client.NumberFormat;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.layout.VLayout;

/**
* <p>
* Sample that demonstrates the use of a listener on the map. It follows the mouse position and prints it out.
* </p>
*
* @author Pieter De Graef
*/
public class MouseMoveListenerSample extends SamplePanel {

  public static final String TITLE = "MouseMoveListener";

  public static final SamplePanelFactory FACTORY = new SamplePanelFactory() {

    public SamplePanel createPanel() {
      return new MouseMoveListenerSample();
    }
  };

  /**
   * @return The viewPanel Canvas
   */
  public Canvas getViewPanel() {
    VLayout layout = new VLayout();
    layout.setWidth100();
    layout.setHeight100();

    // Create the map, using the wmsMap configuration (mapOsm.xml):
    final MapWidget map = new MapWidget("mapOsm", "gwt-samples");

    VLayout mapLayout = new VLayout();
    mapLayout.setShowEdges(true);
    mapLayout.setHeight("60%");
    mapLayout.addMember(map);

    VLayout labelLayout = new VLayout();
    final Label label = new Label();
    labelLayout.addMember(label);

    /**
     * Listener implementation that prints out the mouse position.
     *
     * @author Pieter De Graef
     */
    class MouseMoveListener extends AbstractListener {

      public void onMouseMove(ListenerEvent event) {
        Coordinate screenPosition = event.getScreenPosition();
        Coordinate worldPosition = event.getWorldPosition();
        String x = NumberFormat.getFormat("0.000").format(worldPosition.getX());
        String y = NumberFormat.getFormat("0.000").format(worldPosition.getY());
        label.setContents(I18nProvider.getSampleMessages().customControllerScreenCoordinates() + " = "
            + screenPosition + "<br/>"
            + I18nProvider.getSampleMessages().customControllerWorldCoordinates() + " = (" + x + ", " + y
            + ")");
      }
    }
    map.addListener(new MouseMoveListener());

    layout.addMember(mapLayout);
    layout.addMember(labelLayout);

    return layout;
  }

  public String getDescription() {
    return I18nProvider.getSampleMessages().mouseMoveListenerDescription();
  }

  public String getSourceFileName() {
    return "classpath:org/geomajas/example/gwt/client/samples/controller/MouseMoveListenerSample.txt";
  }

  public String[] getConfigurationFiles() {
    return new String[] { "WEB-INF/layerOsm.xml", "WEB-INF/mapOsm.xml" };
  }

  public String ensureUserLoggedIn() {
    return "luc";
  }
}
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