Example usage for com.google.gwt.maps.client.overlays OverlayView newInstance

Introduction

In this page you can find the example usage for com.google.gwt.maps.client.overlays OverlayView newInstance.

Prototype

public final static OverlayView newInstance(MapWidget mapWidget, OverlayViewOnDrawHandler onDrawHandler,
        OverlayViewOnAddHandler onAddDandler, OverlayViewOnRemoveHandler onRemoveHandler) 

Source Link

Document

You should inherit from this class by setting your overlay's prototype to new OverlayView.prototype.

Usage

From source file:com.google.gwt.maps.testing.client.maps.OverlayViewMapWidget.java

License:Apache License

private void drawOverlay_Generic_OverlayView() {
    OverlayViewOnDrawHandler onDrawHandler = new OverlayViewOnDrawHandler() {
        @Override//  ww w . ja v a  2  s.c o m
        public void onDraw(OverlayViewMethods methods) {
            MapCanvasProjection projection = methods.getProjection();
            LatLng sw = LatLng.newInstance(40.710216, -74.213393);
            Point p = projection.fromLatLngToDivPixel(sw);
            htmlOverlayMessage.getElement().getStyle().setPosition(Position.ABSOLUTE);
            htmlOverlayMessage.getElement().getStyle().setLeft(p.getX(), Unit.PX);
            htmlOverlayMessage.getElement().getStyle().setTop(p.getY(), Unit.PX);

            String message = "OverlayView draw() called... the projection world width is "
                    + projection.getWorldWidth();
            htmlOverlayMessage.clear();
            htmlOverlayMessage.add(new HTML(message));
            System.out.println(message);
        }
    };

    OverlayViewOnAddHandler onAddHandler = new OverlayViewOnAddHandler() {
        @Override
        public void onAdd(OverlayViewMethods methods) {
            MapCanvasProjection projection = methods.getProjection();
            String message = "OverlayView add() called... the projection world width is "
                    + projection.getWorldWidth();
            System.out.println(message);

            methods.getPanes().getFloatPane().appendChild(htmlOverlayMessage.getElement());
        }
    };

    OverlayViewOnRemoveHandler onRemoveHandler = new OverlayViewOnRemoveHandler() {
        @Override
        public void onRemove(OverlayViewMethods methods) {
            String message = "OverlayView remove() called...";
            System.out.println(message);

            // remove existing nodes
            htmlOverlayMessage.getElement().removeFromParent();
        }
    };

    customOverlayView = OverlayView.newInstance(mapWidget, onDrawHandler, onAddHandler, onRemoveHandler);
}

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