Examples of org.geomajas.gwt.client.controller.GraphicsController

Package org.geomajas.gwt.client.controller

Examples of org.geomajas.gwt.client.controller.GraphicsController

org.geomajas.gwt.client.controller.GraphicsController

General interface for a controller set on a {@link org.geomajas.gwt.client.widget.MapWidget}. It should implement all of the available mouse handling events.

These controllers can do anything they want with these mouse events, and as a result only one controller can be active on a map at any given time. This is also the difference between controllers and listeners. A Listener passively listens to mouse events without ever interfering with them. Therefore there is no maximum of listeners that can be active on a map at any given time.
@author Pieter De Graef @since 1.6.0

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


    // Create the custom controller:
    GraphicsController customController = new AbstractGraphicsController(map) {
      
      public void onMouseMove(MouseMoveEvent event) {
        Coordinate screenPosition = getScreenPosition(event);
        Coordinate worldPosition = getWorldPosition(event);
        String x = NumberFormat.getFormat("0.000").format(worldPosition.getX());

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    // Map with ID wmsMap is defined in the XML configuration. (mapWms.xml)
    final MapWidget map = new MapWidget("mapOsm", "gwt-samples");


    // Create the custom controller:
    final GraphicsController customController = new AbstractGraphicsController(map) {


      public void onMouseOver(MouseOverEvent event) {
        // When the mouse hovers over the image, make it transparent:
        map.getVectorContext().drawRectangle(map.getGroup(RenderGroup.SCREEN), "rectangle", rectangle,
            hoverStyle);

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    final Toolbar toolbar = new Toolbar(map);
    toolbar.setButtonSize(Toolbar.BUTTON_SIZE_BIG);


    // Create a custom controller that will be enabled/disabled by a button in the toolbar:
    final GraphicsController customController = new AbstractGraphicsController(map) {


      public void onMouseUp(MouseUpEvent event) {
        Coordinate screenPosition = getScreenPosition(event);
        Coordinate worldPosition = getWorldPosition(event);
        SC.say(I18nProvider.getSampleMessages().customControllerScreenCoordinates() + " = " + screenPosition

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Related Classes of org.geomajas.gwt.client.controller.GraphicsController

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

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

org.geomajas.example.gwt.client.samples.toolbar.CustomToolbarToolsSample

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