Examples with LMap org.vaadin.addon.leaflet.LMap used on opensource projects

Example 1 with LMap

use of org.vaadin.addon.leaflet.LMap in project v-leaflet by mstahv.

the class ChoroplethExample method getTestComponent.

@Override
public Component getTestComponent() {
    leafletMap = new LMap();
    leafletMap.addLayer(new LOpenStreetMapLayer());
    leafletMap.setView(37.8, -96.0, 4.0);
    /*
         * Reading from geojson here, but typically you'd just query
         * your DB directly for the data.
         */
    FeatureJSON io = new FeatureJSON();
    try {
        // 
        // 
        FeatureCollection fc = io.readFeatureCollection(getClass().getResourceAsStream("/us-states.json"));
        FeatureIterator iterator = fc.features();
        try {
            while (iterator.hasNext()) {
                Feature feature = iterator.next();
                final String name = feature.getProperty("name").getValue().toString();
                final Double density = (Double) feature.getProperty("density").getValue();
                System.out.println("State " + name + " read!");
                Geometry geometry = (Geometry) feature.getDefaultGeometryProperty().getValue();
                // Using a helper create v-leaflet components from geojson
                Collection<LeafletLayer> toLayers = JTSUtil.toLayers(geometry);
                for (LeafletLayer l : toLayers) {
                    leafletMap.addComponent(l);
                    if (l instanceof AbstractLeafletVector) {
                        configureFeature(l, density, name);
                    } else if (l instanceof LLayerGroup) {
                        LLayerGroup g = (LLayerGroup) l;
                        for (Component component : g) {
                            configureFeature((LeafletLayer) component, density, name);
                        }
                    }
                }
            }
        } finally {
            iterator.close();
        }
    } catch (MalformedURLException ex) {
        Logger.getLogger(ChoroplethExample.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(ChoroplethExample.class.getName()).log(Level.SEVERE, null, ex);
    }
    /*
         * AbsoluteLayout is a handy layout you can use to place any Vaadin
         * components on top of map. Here we just use raw html label to create
         * a legend, but we could use dynamically generated html or e.g. Table
         * component on top of the map as well.
         */
    AbsoluteLayout absoluteLayout = new AbsoluteLayout();
    absoluteLayout.setWidth("800px");
    absoluteLayout.setHeight("500px");
    absoluteLayout.addComponent(leafletMap);
    Label label = new Label("<style>.legend { background:white; padding:10px; border-radius: 4px; text-align: left; line-height: 18px; color: #555; } .legend i { width: 18px; height: 18px; float: left; margin-right: 8px; opacity: 0.7; }</style><div class=\"info legend leaflet-control\"><i style=\"background:#FFEDA0\"></i> 0–10<br><i style=\"background:#FED976\"></i> 10–20<br><i style=\"background:#FEB24C\"></i> 20–50<br><i style=\"background:#FD8D3C\"></i> 50–100<br><i style=\"background:#FC4E2A\"></i> 100–200<br><i style=\"background:#E31A1C\"></i> 200–500<br><i style=\"background:#BD0026\"></i> 500–1000<br><i style=\"background:#800026\"></i> 1000+</div>", ContentMode.HTML);
    label.setWidth("100px");
    absoluteLayout.addComponent(label, "bottom: 30px; right: 20px;");
    return absoluteLayout;
}

Example 2 with LMap

use of org.vaadin.addon.leaflet.LMap in project v-leaflet by mstahv.

the class CustomProjection method getTestComponent.

@Override
public Component getTestComponent() {
    LMap leafletMap = new LMap();
    LWmsLayer lWmsLayer = new LWmsLayer();
    lWmsLayer.setUrl("http://osm.omniscale.net/proxy/service");
    lWmsLayer.setLayers("osm");
    lWmsLayer.setFormat("image/png");
    // Toggle this line to see if WMS layer is requested with differen
    // CRS
    lWmsLayer.setCrs(Crs.EPSG4326);
    leafletMap.addLayer(lWmsLayer);
    leafletMap.setCenter(52.51739, 13.40209);
    leafletMap.setZoomLevel(14);
    return leafletMap;
}

Example 3 with LMap

use of org.vaadin.addon.leaflet.LMap in project v-leaflet by mstahv.

the class FlyToTest method getTestComponent.

@Override
public Component getTestComponent() {
    leafletMap = new LMap();
    leafletMap.setWidth("600px");
    leafletMap.setHeight("300px");
    leafletMap.setCenter(0, 0);
    leafletMap.setZoomLevel(2);
    final LOpenStreetMapLayer osm = new LOpenStreetMapLayer();
    leafletMap.addLayer(osm);
    Button flyTo1 = new Button("Fly to Vaadin HQ");
    flyTo1.addClickListener(new Button.ClickListener() {

        @Override
        public void buttonClick(Button.ClickEvent event) {
            leafletMap.flyTo(new Point(60.452236, 22.299839), 14.0);
        }
    });
    Button flyTo2 = new Button("Fly to Golden Gate");
    flyTo2.addClickListener(new Button.ClickListener() {

        @Override
        public void buttonClick(Button.ClickEvent event) {
            leafletMap.flyTo(new Point(37.816304, -122.478543), 9.0);
        }
    });
    return new VerticalLayout(leafletMap, flyTo1, flyTo2);
}

Example 4 with LMap

use of org.vaadin.addon.leaflet.LMap in project v-leaflet by mstahv.

the class FractionalZoom method getTestComponent.

@Override
public Component getTestComponent() {
    leafletMap = new LMap();
    leafletMap.setWidth("300px");
    leafletMap.setHeight("300px");
    leafletMap.setCenter(0, 0);
    leafletMap.setZoomLevel(2.5);
    leafletMap.addLayer(new LOpenStreetMapLayer());
    final Slider slider = new Slider("ZoomLevel");
    slider.setWidth("200px");
    slider.setMin(1);
    slider.setMax(16);
    slider.setResolution(1);
    slider.addValueChangeListener((HasValue.ValueChangeListener<Double>) event -> {
        leafletMap.setZoomLevel(event.getValue());
        Notification.show("Zoom level: " + event.getValue(), Notification.Type.TRAY_NOTIFICATION);
    });
    return new VerticalLayout(leafletMap, slider);
}

Example 5 with LMap

use of org.vaadin.addon.leaflet.LMap in project v-leaflet by mstahv.

the class GeoJSONExample method getTestComponent.

@Override
public Component getTestComponent() {
    leafletMap = new LMap();
    leafletMap.setWidth("600px");
    leafletMap.setHeight("400px");
    /*
         * Note, this is just one option to read GeoJSON in java. Here, using 
         * helper from geotools library. In some simple cases approach to use
         * plain Json library like Jackson or GSON might be better.
         */
    FeatureJSON io = new FeatureJSON();
    try {
        long currentTimeMillis = System.currentTimeMillis();
        // Look ma, no proxy needed, how cool is that!
        FeatureCollection fc = io.readFeatureCollection(new URL("http://eric.clst.org/assets/wiki/uploads/Stuff/gz_2010_us_040_00_500k.json").openStream());
        Logger.getLogger(GeoJSONExample.class.getName()).severe("Download in " + (System.currentTimeMillis() - currentTimeMillis));
        currentTimeMillis = System.currentTimeMillis();
        FeatureIterator iterator = fc.features();
        try {
            while (iterator.hasNext()) {
                Feature feature = iterator.next();
                final String name = feature.getProperty("NAME").getValue().toString();
                System.out.println("State " + name + " read!");
                Geometry geometry = (Geometry) feature.getDefaultGeometryProperty().getValue();
                // The geojson provided in example is rather complex (several megabytes)
                // Use JTS to simplyfy. Note that it is rather easy to use
                // different settings on different zoom levels, as well as decide
                // to drop the feature form client altogether
                geometry = DouglasPeuckerSimplifier.simplify(geometry, 0.2);
                // In this example can be Polygon/Multipolygon
                Collection<LeafletLayer> toLayers = JTSUtil.toLayers(geometry);
                for (LeafletLayer l : toLayers) {
                    leafletMap.addComponent(l);
                    if (l instanceof LPolygon) {
                        LPolygon lPolygon = (LPolygon) l;
                        lPolygon.addClickListener(new LeafletClickListener() {

                            @Override
                            public void onClick(LeafletClickEvent event) {
                                Notification.show("That is " + name);
                            }
                        });
                    }
                }
            }
            Logger.getLogger(GeoJSONExample.class.getName()).severe("Reducing and creating layers " + (System.currentTimeMillis() - currentTimeMillis));
        } finally {
            iterator.close();
        }
    } catch (MalformedURLException ex) {
        Logger.getLogger(GeoJSONExample.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(GeoJSONExample.class.getName()).log(Level.SEVERE, null, ex);
    }
    leafletMap.zoomToContent();
    return leafletMap;
}