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

Example 1 with LeafletLayer

use of org.vaadin.addon.leaflet.LeafletLayer 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 LeafletLayer

use of org.vaadin.addon.leaflet.LeafletLayer 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;
}

Example 3 with LeafletLayer

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

the class BasicJtsTest method setup.

@Override
protected void setup() {
    super.setup();
    Button button = new Button("Delete first component from map");
    button.addClickListener(new ClickListener() {

        @Override
        public void buttonClick(ClickEvent event) {
            Component next = leafletMap.iterator().next();
            leafletMap.removeComponent(next);
        }
    });
    content.addComponentAsFirst(button);
    button = new Button("Add polyline to map");
    button.addClickListener(new ClickListener() {

        @Override
        public void buttonClick(ClickEvent event) {
            MultiLineString multiLineString = getMultiLineString();
            Collection<LeafletLayer> layers = JTSUtil.toLayers(multiLineString);
            for (LeafletLayer leafletLayer : layers) {
                lfg.addComponent(leafletLayer);
            }
        }
    });
    content.addComponentAsFirst(button);
}

Example 4 with LeafletLayer

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

the class BasicJtsTest method getTestComponent.

public Component getTestComponent() {
    leafletMap = new LMap();
    // Not creating a name -> not added to the
    lfg = new LFeatureGroup();
    // overlay controller
    Polygon poly = getPolygon();
    Collection<LeafletLayer> lPoly = JTSUtil.toLayers(poly);
    lfg.addComponent(lPoly);
    MultiPolygon multiPolygon = getMultiPolygon();
    Collection<LeafletLayer> lMultiPoly = JTSUtil.toLayers(multiPolygon);
    lfg.addComponent(lMultiPoly);
    LineString lineString = getLineString();
    Collection<LeafletLayer> lLine = JTSUtil.toLayers(lineString);
    lfg.addComponent(lLine);
    // MultiLineString multiLineString = getMultiLineString();
    // Collection<LeafletLayer> lMultiLine = JTSUtil.toLayers(multiLineString);
    // lfg.addComponent(lMultiLine);
    MultiPoint multiPoint = getMultiPoint();
    Collection<LeafletLayer> lMultiPoint = JTSUtil.toLayers(multiPoint);
    lfg.addComponent(lMultiPoint);
    Point point = getPoint();
    Collection<LeafletLayer> lPoint = JTSUtil.toLayers(point);
    lfg.addComponent(lPoint);
    leafletMap.setZoomLevel(5);
    leafletMap.setCenter(multiPolygon.getCentroid());
    leafletMap.addComponent(lfg);
    return leafletMap;
}

Example 5 with LeafletLayer

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

the class PolygonWithHolesTest method getTestComponent.

public Component getTestComponent() {
    leafletMap = new LMap();
    // Not creating a name -> not added to the
    lfg = new LFeatureGroup();
    // overlay controller
    LPolygon polygon = new LPolygon();
    polygon.setPoints(new Point[] { new Point(0, 0), new Point(30, 30), new Point(30, 0) });
    polygon.setHoles(new Point[] { new Point(20, 20), new Point(25, 25), new Point(25, 20) });
    // non complete hole
    polygon.setHoles(new Point[] { new Point(5, 10), new Point(15, 15), new Point(15, 10) });
    polygon.setColor("green");
    lfg.addComponent(polygon);
    Polygon poly = getPolygon();
    Collection<LeafletLayer> lPoly = JTSUtil.toLayers(poly);
    lfg.addComponent(lPoly);
    leafletMap.setZoomLevel(5);
    leafletMap.addComponent(lfg);
    leafletMap.zoomToContent();
    return leafletMap;
}