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332 lines
8.8 KiB
Java
332 lines
8.8 KiB
Java
package org.gcube.portlets.user.geoportaldataviewer.client.gis;
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import org.gcube.application.geoportalcommon.shared.gis.BoundsMap;
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import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerConstants;
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import org.gcube.portlets.user.geoportaldataviewer.client.resources.Images;
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import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery;
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import org.gcube.portlets.user.geoportaldataviewer.shared.gis.GeoQuery.TYPE;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.i18n.client.NumberFormat;
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import ol.Coordinate;
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import ol.Feature;
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import ol.Map;
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import ol.MapBrowserEvent;
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import ol.MapOptions;
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import ol.OLFactory;
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import ol.View;
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import ol.ViewOptions;
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import ol.control.Attribution;
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import ol.event.EventListener;
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import ol.geom.Point;
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import ol.interaction.KeyboardPan;
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import ol.interaction.KeyboardZoom;
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import ol.layer.Image;
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import ol.layer.LayerOptions;
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import ol.layer.Tile;
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import ol.layer.VectorLayerOptions;
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import ol.proj.Projection;
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import ol.proj.ProjectionOptions;
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import ol.source.ImageWms;
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import ol.source.ImageWmsOptions;
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import ol.source.ImageWmsParams;
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import ol.source.Osm;
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import ol.source.XyzOptions;
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import ol.style.Icon;
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import ol.style.IconOptions;
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import ol.style.Style;
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import ol.style.Text;
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import ol.style.TextOptions;
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/**
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* The Class LightOpenLayerOSM.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
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*
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* Nov 11, 2020
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*/
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public class LightOpenLayerOSM {
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/** The map. */
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private Map map;
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/** The view. */
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private View view;
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/** The view options. */
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private ViewOptions viewOptions = OLFactory.createOptions();
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/** The projection options. */
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private ProjectionOptions projectionOptions = OLFactory.createOptions();
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private boolean isQueryPointActive;
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private ol.layer.Vector geometryLayer;
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private String markerURL = Images.ICONS.mapMarkerIcon().getURL();
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/**
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* Instantiates a new light open layer OSM.
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*
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* @param divTargetId the div target id
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*/
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public LightOpenLayerOSM(String divTargetId) {
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// create a OSM-layer
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XyzOptions osmSourceOptions = OLFactory.createOptions();
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Osm osmSource = new Osm(osmSourceOptions);
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LayerOptions osmLayerOptions = OLFactory.createOptions();
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osmLayerOptions.setSource(osmSource);
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Tile osmLayer = new Tile(osmLayerOptions);
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// create a projection
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projectionOptions.setCode(GeoportalDataViewerConstants.EPSG_3857);
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projectionOptions.setUnits("m");
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Projection projection = new Projection(projectionOptions);
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viewOptions.setProjection(projection);
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viewOptions.setMaxZoom(20);
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// create a view
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view = new View(viewOptions);
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// create the map
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MapOptions mapOptions = OLFactory.createOptions();
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mapOptions.setTarget(divTargetId);
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mapOptions.setView(view);
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map = new Map(mapOptions);
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map.addLayer(osmLayer);
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//map.addLayer(tileDebugLayer);
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Attribution attribution = new Attribution();
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attribution.setCollapsed(true);
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map.addClickListener(new EventListener<MapBrowserEvent>() {
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@Override
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public void onEvent(MapBrowserEvent event) {
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// TODO Auto-generated method stub
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Coordinate coordinate = event.getCoordinate();
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if(isQueryPointActive) {
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double lon = coordinate.getX();
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double lat = coordinate.getY();
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int w = (int) map.getSize().getWidth();
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int h = (int) map.getSize().getHeight();
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// handler.clickOnMap(x, y, w, h);
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// ratio - mapPixelWeight : bboxWeight = 10px : geoRectangleWidth
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// where 10px is the pixel diameter dimension of the clicked point
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double bboxWidth = Math.abs(getExtent().getLowerLeftX() - getExtent().getUpperRightX());
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double geoWidth = (bboxWidth / w) * (20 / 2);
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double x1 = Math.min(lon+geoWidth, lon-geoWidth);
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double x2 = Math.max(lon+geoWidth, lon-geoWidth);
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double y1 = Math.min(lat+geoWidth, lat-geoWidth);
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double y2 = Math.max(lat+geoWidth, lat-geoWidth);
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//GWT.log("("+x1+","+y1+")("+x2+","+y2+")");
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// Point pt = new Point(coordinate);
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// ol.Extent extent = pt.getExtent();
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// //new ClickDataInfo(x1, y1, x2, y2)
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// SelectDataInfo selectDataInfo
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//selectBox(new GeoQuery(x1, y1, x2, y2, GeoQuery.TYPE.POINT));
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GeoQuery select = new GeoQuery(x1, y1, x2, y2, TYPE.POINT);
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}
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}
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});
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map.addControl(attribution);
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// add some interactions
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map.addInteraction(new KeyboardPan());
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map.addInteraction(new KeyboardZoom());
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}
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/**
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* Sets the center.
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*
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* @param centerCoordinate the new center
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*/
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public void setCenter(Coordinate centerCoordinate) {
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view.setCenter(centerCoordinate);
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}
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/**
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* Sets the center.
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*
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* @param zoom the new zoom
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*/
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public void setZoom(int zoom) {
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view.setZoom(zoom);
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}
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/**
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* Adds the WMS layer.
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*
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* @param mapServerHost the map server host
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* @param layerName the layer name
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* @param bbox
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* @return the image
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*/
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public Image addWMSLayer(String mapServerHost, String layerName, BoundsMap bbox) {
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GWT.log("Adding wmsLayer with mapServerHost: "+mapServerHost+", layerName: "+layerName);
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ImageWmsParams imageWMSParams = OLFactory.createOptions();
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imageWMSParams.setLayers(layerName);
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//imageWMSParams.setSize(new Size(400,400));
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//imageWMSParams.setVersion("1.1.0");
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// if(bbox!=null)
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// imageWMSParams.set("BBOX", bbox.getLowerLeftX()+","+bbox.getLowerLeftY()+","+bbox.getUpperRightX()+","+bbox.getUpperRightY());
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ImageWmsOptions imageWMSOptions = OLFactory.createOptions();
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imageWMSOptions.setUrl(mapServerHost);
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imageWMSOptions.setParams(imageWMSParams);
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//imageWMSOptions.setRatio(1.5f);
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ImageWms imageWMSSource = new ImageWms(imageWMSOptions);
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LayerOptions layerOptions = OLFactory.createOptions();
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layerOptions.setSource(imageWMSSource);
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ol.layer.Image wmsLayer = new ol.layer.Image(layerOptions);
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//visibleLayerItems
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map.addLayer(wmsLayer);
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return wmsLayer;
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}
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/**
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* Gets the first layer.
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*
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* @return the first layer
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*/
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public Image getFirstLayer() {
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if(map.getLayers()!=null) {
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return (Image) map.getLayers().getArray()[0];
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}
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return null;
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}
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/**
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* Adds the point.
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*
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* @param coordinate the coordinate
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* @param showCoordinateText the show coordinate text
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* @param asMarker the as marker
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*/
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public void addPoint(Coordinate coordinate, boolean showCoordinateText, boolean asMarker) {
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if(geometryLayer!=null) {
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map.removeLayer(geometryLayer);
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}else {
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}
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Style style = new Style();
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if(asMarker) {
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IconOptions iconOptions = new IconOptions();
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iconOptions.setSrc(markerURL);
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Icon icon = new Icon(iconOptions);
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style.setImage(icon);
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}
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if(showCoordinateText) {
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TextOptions textOptions = new TextOptions();
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textOptions.setOffsetY(-25);
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// StrokeOptions strokeOptions = new StrokeOptions();
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// strokeOptions.setColor(new Color(0, 0, 255, 0.0));
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// strokeOptions.setWidth(4);
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// Stroke stroke = new Stroke(strokeOptions);
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// textOptions.setStroke(stroke);
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// FillOptions fillOptions = new FillOptions();
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// fillOptions.setColor(new Color(0, 0, 0, 0.0));
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// textOptions.setFill(new Fill(fillOptions));
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Coordinate transfCoord = MapUtils.transformCoordiante(coordinate, GeoportalDataViewerConstants.EPSG_3857, GeoportalDataViewerConstants.EPSG_4326);
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//DecimalFormat df = new DecimalFormat("#.####");
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NumberFormat fmt = NumberFormat.getFormat("#.####");
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textOptions.setText("Long: "+fmt.format(transfCoord.getX()) + ", Lat: "+fmt.format(transfCoord.getY()));
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Text text = new Text(textOptions);
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// FillOptions fillOptions = new FillOptions();
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// Color color = new Color(217, 217, 223, 0.0);
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// fillOptions.setColor(color);
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// Fill fill = new Fill(fillOptions);
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// style.setFill(fill);
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style.setText(text);
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}
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Point thePoint = new Point(coordinate);
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Feature vf = new Feature(thePoint);
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vf.setStyle(style);
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ol.source.Vector vector = new ol.source.Vector();
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vector.addFeature(vf);
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VectorLayerOptions vectorLayerOptions = new VectorLayerOptions();
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vectorLayerOptions.setSource(vector);
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geometryLayer = new ol.layer.Vector(vectorLayerOptions);
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map.addLayer(geometryLayer);
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}
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/**
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* Gets the map.
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*
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* @return the map
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*/
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public Map getMap() {
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return map;
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}
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/**
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* Gets the projection code.
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*
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* @return the projection code
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*/
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public String getProjectionCode() {
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return map.getView().getProjection().getCode();
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}
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/**
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* Gets the current zoom level.
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*
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* @return the current zoom level
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*/
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public double getCurrentZoomLevel() {
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return map.getView().getZoom();
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}
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/**
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* Gets the bbox.
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*
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* @return the bbox
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*/
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public ol.Extent getBBOX() {
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return getExtent();
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}
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/**
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* Gets the extent.
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*
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* @return the extent
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*/
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public ol.Extent getExtent() {
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return this.map.getView().calculateExtent(map.getSize());
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}
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}
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