Package org.geomajas.puregwt.client.rendering

Source Code of org.geomajas.puregwt.client.rendering.WorldSpaceRenderingPanel$MyMapInitializationHandler

/*
* 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.puregwt.client.rendering;

import org.geomajas.puregwt.client.ContentPanel;
import org.geomajas.puregwt.client.map.MapPresenter;
import org.geomajas.puregwt.client.map.event.MapInitializationEvent;
import org.geomajas.puregwt.client.map.event.MapInitializationHandler;
import org.geomajas.puregwt.client.map.gfx.WorldContainer;
import org.vaadin.gwtgraphics.client.shape.Circle;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
* ContentPanel that demonstrates rendering abilities in world space.
*
* @author Pieter De Graef
*/
public class WorldSpaceRenderingPanel extends ContentPanel {

  private MapPresenter mapPresenter;

  private WorldContainer container;

  public String getTitle() {
    return "Drawing in world space";
  }

  public String getDescription() {
    return "This example shows the vector object drawing capabilities of the Geomajas map. In this particular "
        + "example, all objects are rendered in world space. For more information regarding screen space and "
        + "world space, visit the javadocs (TODO make this a link).<br/>Try navigating the map to see the "
        + "difference with screen space.";
  }

  public Widget getContentWidget() {
    // Define the left layout:
    VerticalPanel leftLayout = new VerticalPanel();
    leftLayout.setSize("220px", "100%");

    leftLayout.add(new HTML("<h3>Drawing options:</h3>"));

    Button circleBtn = new Button("Draw circle");
    circleBtn.setWidth("200");
    circleBtn.addClickHandler(new ClickHandler() {

      public void onClick(ClickEvent event) {
        Circle circle = new Circle(0, 0, 3000000);
        circle.setFillColor("#66CC66");
        circle.setFillOpacity(0.4);
        container.add(circle);
      }
    });
    leftLayout.add(circleBtn);

    Button deleteBtn = new Button("Delete all drawings");
    deleteBtn.setWidth("200");
    deleteBtn.addClickHandler(new ClickHandler() {

      public void onClick(ClickEvent arg0) {
        container.clear();
      }
    });
    leftLayout.add(deleteBtn);

    // Create the MapPresenter and add an InitializationHandler:
    mapPresenter = getInjector().getMapPresenter();
    mapPresenter.setSize(640, 480);
    mapPresenter.getEventBus().addHandler(MapInitializationEvent.TYPE, new MyMapInitializationHandler());

    // Define the whole layout:
    HorizontalPanel layout = new HorizontalPanel();
    layout.add(leftLayout);
    DecoratorPanel mapDecorator = new DecoratorPanel();
    mapDecorator.add(mapPresenter.asWidget());
    layout.add(mapDecorator);

    // Initialize the map, and return the layout:
    mapPresenter.initialize("pure-gwt-app", "mapOsm");
    return layout;
  }

  /**
   * Map initialization handler that adds a CheckBox to the layout for every layer. With these CheckBoxes, the user
   * can toggle the layer's visibility.
   *
   * @author Pieter De Graef
   */
  private class MyMapInitializationHandler implements MapInitializationHandler {

    public void onMapInitialized(MapInitializationEvent event) {
      container = mapPresenter.addWorldContainer();
    }
  }
}
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