/**
* tell this layer where to plot itself
*
* @param map
*/
public void setMap(MapContent map) {
clearMap();
// remember the map
_myMap = map;
// read ourselves in
File openFile = new File(super.getFilename());
if (openFile != null && openFile.exists()) {
_myLayer = loadLayer(openFile);
} else {
CorePlugin.logError(Status.WARNING, "GeoTools file not found:" + super.getFilename(), null);
CorePlugin.showMessage(
"Load GIS dataset", "Sorry, can't find the file:\n" + super.getFilename());
}
// ok, add ourselves to the map
if (_myLayer != null) {
// sort out the visibility
_myLayer.setVisible(this.getVisible());
_myLayer.setTitle(super.getName());
_myMap.addLayer(_myLayer);
}
}
/**
* It sets the visibility of the layer. If the visibility changed, then the map will be refreshed.
*
* @param visible
*/
public void setVisible(boolean visible) {
for (Layer mapLayer : this.mapLayers) {
if (mapLayer.isVisible() != visible) {
mapLayer.setVisible(visible);
}
}
}
@Test
public void testInterpolationByLayer() throws Exception {
StreamingRenderer sr = new StreamingRenderer();
Layer layer = new FeatureLayer(createLineCollection(), createLineStyle());
// default is nearest neighbor
assertEquals(
sr.getRenderingInterpolation(layer),
Interpolation.getInstance(Interpolation.INTERP_NEAREST));
// test all possible values
layer
.getUserData()
.put(
StreamingRenderer.BYLAYER_INTERPOLATION,
Interpolation.getInstance(Interpolation.INTERP_BICUBIC));
assertEquals(
sr.getRenderingInterpolation(layer),
Interpolation.getInstance(Interpolation.INTERP_BICUBIC));
layer
.getUserData()
.put(
StreamingRenderer.BYLAYER_INTERPOLATION,
Interpolation.getInstance(Interpolation.INTERP_BILINEAR));
assertEquals(
sr.getRenderingInterpolation(layer),
Interpolation.getInstance(Interpolation.INTERP_BILINEAR));
layer
.getUserData()
.put(
StreamingRenderer.BYLAYER_INTERPOLATION,
Interpolation.getInstance(Interpolation.INTERP_NEAREST));
assertEquals(
sr.getRenderingInterpolation(layer),
Interpolation.getInstance(Interpolation.INTERP_NEAREST));
}
@Test
public void testDrawIntepolation() throws Exception {
MapContent mc = new MapContent();
ReferencedEnvelope reWgs =
new ReferencedEnvelope(new Envelope(-180, 180, -90, 90), DefaultGeographicCRS.WGS84);
BufferedImage testImage = new BufferedImage(200, 200, BufferedImage.TYPE_4BYTE_ABGR);
GridCoverage2D testCoverage = new GridCoverageFactory().create("test", testImage, reWgs);
GridCoverage2D coverage = new GridCoverage2D("test", testCoverage);
// mocking a GridCoverageReader to wrap the testing coverage
GridCoverage2DReader gridCoverageReader = Mockito.mock(GridCoverage2DReader.class);
Mockito.when(gridCoverageReader.getOriginalEnvelope()).thenReturn(new GeneralEnvelope(reWgs));
Mockito.when(gridCoverageReader.getCoordinateReferenceSystem())
.thenReturn(DefaultGeographicCRS.WGS84);
Mockito.when(gridCoverageReader.read(Mockito.any(GeneralParameterValue[].class)))
.thenReturn(coverage);
Layer layer =
new FeatureLayer(
FeatureUtilities.wrapGridCoverageReader(
gridCoverageReader, new GeneralParameterValue[] {}),
createRasterStyle());
layer
.getUserData()
.put(
StreamingRenderer.BYLAYER_INTERPOLATION,
Interpolation.getInstance(Interpolation.INTERP_BICUBIC));
mc.addLayer(layer);
BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_4BYTE_ABGR);
StreamingRenderer sr = new StreamingRenderer();
sr.setMapContent(mc);
Graphics2D graphics = (Graphics2D) image.getGraphics();
sr.paint(graphics, new Rectangle(200, 200), reWgs);
// test right interpolation hint is set on Graphics2D
assertEquals(
graphics.getRenderingHint(JAI.KEY_INTERPOLATION),
Interpolation.getInstance(Interpolation.INTERP_BICUBIC));
layer
.getUserData()
.put(
StreamingRenderer.BYLAYER_INTERPOLATION,
Interpolation.getInstance(Interpolation.INTERP_NEAREST));
sr.paint(graphics, new Rectangle(200, 200), reWgs);
// test right interpolation hint is set on Graphics2D
assertEquals(
graphics.getRenderingHint(JAI.KEY_INTERPOLATION),
Interpolation.getInstance(Interpolation.INTERP_NEAREST));
}
ReferencedEnvelope bounds(Layer layer, WMSMapContent map) {
ReferencedEnvelope e = layer.getBounds();
if (e == null) {
e = bounds(map);
}
return e;
}
@Override
protected void finalize() throws Throwable {
// ok, ditch the layer
if (_myLayer != null) _myLayer.dispose();
// and let the parent do it's stuff
super.finalize();
}
/**
* Called when a new map layer has been added. Sets the layer as selected (for queries) and, if
* the layer table is being used, adds the new layer to the table.
*/
public void layerAdded(MapLayerListEvent event) {
Layer layer = event.getElement();
if (layerTable != null) {
layerTable.onAddLayer(layer);
}
layer.setSelected(true);
redrawBaseImage = true;
boolean atFullExtent = equalsFullExtent(getDisplayArea());
boolean firstLayer = content.layers().size() == 1;
if (firstLayer || atFullExtent) {
reset();
if (firstLayer) {
setCrs(layer.getBounds().getCoordinateReferenceSystem());
return;
}
}
if (!isDisposed()) redraw();
}
/**
* Returns true if the request is GWC compatible
*
* @param mapContent
* @return
*/
public static boolean isRequestGWCCompatible(WMSMapContent mapContent, Layer layer, WMS wms) {
List<Layer> layers = mapContent.layers();
for (int i = 0; i < layers.size(); i++) {
if (layers.get(i) == layer) {
return isRequestGWCCompatible(mapContent.getRequest(), i, wms);
}
}
LOGGER.warning("Could not find map layer " + layer.getTitle() + " in the map context");
return false;
}
/** forget about any existing map/layer */
public void clearMap() {
if (_myLayer != null) {
// remove ourselves from the map
if (_myMap != null) {
_myMap.removeLayer(_myLayer);
}
_myLayer.dispose();
_myLayer = null;
}
_myMap = null;
}
/**
* Set the map context for this map pane to display
*
* @param content the map context
*/
public void setMapContent(MapContent content) {
if (this.content != content) {
if (this.content != null) {
this.content.removeMapLayerListListener(this);
// for( MapLayer layer : this.context.getLayers() ) {
// if (layer instanceof ComponentListener) {
// removeComponentListener((ComponentListener) layer);
// }
// }
}
this.content = content;
if (content != null) {
this.content.addMapLayerListListener(this);
this.content.addMapBoundsListener(this);
// set all layers as selected by default for the info tool
for (Layer layer : content.layers()) {
layer.setSelected(true);
// if (layer instanceof ComponentListener) {
// addComponentListener((ComponentListener) layer);
// }
}
setFullExtent();
}
if (renderer != null) {
renderer.setMapContent(this.content);
}
MapPaneEvent ev = new MapPaneEvent(this, MapPaneEvent.Type.NEW_CONTEXT);
publishEvent(ev);
}
}
public static void legendAction() {
try {
LegendColorTable.countTable = 0;
Layer layer = content.layers().get(content.layers().size() - 1);
SimpleFeatureSource featureSource = (SimpleFeatureSource) layer.getFeatureSource();
String fieldName = getFieldForColour(featureSource);
if (fieldName != null && fieldName.length() > 0) {
Style style = createStyle(featureSource, fieldName);
content.removeLayer(layer);
Layer newLayer = new FeatureLayer(featureSource, style);
content.addLayer(newLayer);
} else throw new NullPointerException("Error occured during making legend");
} catch (ArrayIndexOutOfBoundsException ex) {
JOptionPane.showMessageDialog(null, "No layers are added !");
} catch (Exception ex) {
ex.printStackTrace();
// JOptionPane.showMessageDialog(null, ex.getMessage());
}
}
private void addLayersListeners() {
MapContent generalContext = ((MapTilesCache) cache).getMapDisplayContext();
MapContent lightweightContext = ((MapTilesCache) lightweightCache).getMapDisplayContext();
generalChangesReflector = new LayersChangesReflector(cache);
lightChangesReflector = new LayersChangesReflector(lightweightCache);
screenChangesReflector = new ScreenChangesReflector();
for (Layer layer : generalContext.layers()) {
layer.addMapLayerListener(generalChangesReflector);
}
for (Layer layer : lightweightContext.layers()) {
layer.addMapLayerListener(lightChangesReflector);
}
if (screenContext != null) {
for (Layer layer : screenContext.layers()) {
layer.addMapLayerListener(screenChangesReflector);
}
}
}
private void removeLayersListeners() {
MapContent generalContext = ((MapTilesCache) cache).getMapDisplayContext();
MapContent lightweightContext = ((MapTilesCache) lightweightCache).getMapDisplayContext();
if (generalChangesReflector != null) {
for (Layer layer : generalContext.layers()) {
layer.removeMapLayerListener(generalChangesReflector);
}
}
if (lightChangesReflector != null) {
for (Layer layer : lightweightContext.layers()) {
layer.removeMapLayerListener(lightChangesReflector);
}
}
if (screenContext != null && screenChangesReflector != null) {
for (Layer layer : screenContext.layers()) {
layer.removeMapLayerListener(screenChangesReflector);
}
}
}
/**
* It gets the visibility of the layer.
*
* @return
*/
public boolean isVisible() {
for (Layer mapLayer : this.mapLayers) {
return mapLayer.isVisible();
}
return false;
}
private List<ZGroupLayerPainter> buildLayerPainters(
Graphics2D graphics,
StreamingRenderer renderer,
String layerId,
ProgressListener cancellationListener)
throws IOException, FactoryException, NoninvertibleTransformException, SchemaException,
TransformException {
List<ZGroupLayerPainter> painters = new ArrayList<>();
boolean closePainters = true;
try {
for (Layer layer : layers) {
// get the LiteFeatureTypeStyle for this layer
final FeatureSource featureSource = layer.getFeatureSource();
if (featureSource == null) {
throw new IllegalArgumentException("The layer does not contain a feature source");
}
final FeatureType schema = featureSource.getSchema();
final ArrayList<LiteFeatureTypeStyle> lfts =
renderer.createLiteFeatureTypeStyles(layer, graphics, false);
if (lfts.isEmpty()) {
continue;
} else {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Processing " + lfts.size() + " stylers for " + schema.getName());
}
}
// get the feature iterator we need
FeatureCollection features = renderer.getFeatures(layer, schema, lfts);
// While we could use a non mark feature iterator for single fts layers,
// that would cause multiple connections to be open at the same time,
// which in turn could cause deadlocks against connection pools, so we
// are going to build a MarkFeatureIterator regardless
// TODO: we could optimize down to simple streaming painting if we end up
// with a single painter with a single fts (due to scale dependencies)
// but we'd have to delay opening the MarkFeatureIterator to recognize the
// situation
int maxFeatures = SortedFeatureReader.getMaxFeaturesInMemory(layer.getQuery());
MarkFeatureIterator fi =
MarkFeatureIterator.create(features, maxFeatures, cancellationListener);
if (fi.hasNext()) {
ZGroupLayerPainter painter = new ZGroupLayerPainter(fi, lfts, renderer, layerId);
painters.add(painter);
} else {
fi.close();
}
}
// got to the end cleanly, no need to close the painters accumulated so far
closePainters = false;
} finally {
if (closePainters) {
for (ZGroupLayerPainter painter : painters) {
try {
painter.close();
} catch (Exception e) {
LOGGER.log(Level.FINE, "Failed to close cleanly layer painter " + painter, e);
}
}
}
}
validateSortBy(painters);
return painters;
}
/**
* Loads the feature collection based on the current styling and the scale denominator. If no
* feature is going to be returned a null feature collection will be returned instead
*
* @param featureSource
* @param layer
* @param mapContent
* @param wms
* @param scaleDenominator
* @return
* @throws Exception
*/
public static SimpleFeatureCollection loadFeatureCollection(
SimpleFeatureSource featureSource,
Layer layer,
WMSMapContent mapContent,
WMS wms,
double scaleDenominator)
throws Exception {
SimpleFeatureType schema = featureSource.getSchema();
Envelope envelope = mapContent.getRenderingArea();
ReferencedEnvelope aoi =
new ReferencedEnvelope(envelope, mapContent.getCoordinateReferenceSystem());
CoordinateReferenceSystem sourceCrs = schema.getCoordinateReferenceSystem();
boolean reprojectBBox =
(sourceCrs != null)
&& !CRS.equalsIgnoreMetadata(aoi.getCoordinateReferenceSystem(), sourceCrs);
if (reprojectBBox) {
aoi = aoi.transform(sourceCrs, true);
}
Filter filter = createBBoxFilter(schema, aoi);
// now build the query using only the attributes and the bounding
// box needed
Query q = new Query(schema.getTypeName());
q.setFilter(filter);
// now, if a definition query has been established for this layer,
// be sure to respect it by combining it with the bounding box one.
Query definitionQuery = layer.getQuery();
if (definitionQuery != Query.ALL) {
if (q == Query.ALL) {
q = (Query) definitionQuery;
} else {
q = (Query) DataUtilities.mixQueries(definitionQuery, q, "KMLEncoder");
}
}
// handle startIndex requested by client query
q.setStartIndex(definitionQuery.getStartIndex());
// check the regionating strategy
RegionatingStrategy regionatingStrategy = null;
String stratname = (String) mapContent.getRequest().getFormatOptions().get("regionateBy");
if (("auto").equals(stratname)) {
Catalog catalog = wms.getGeoServer().getCatalog();
Name name = layer.getFeatureSource().getName();
stratname =
catalog
.getFeatureTypeByName(name)
.getMetadata()
.get("kml.regionateStrategy", String.class);
if (stratname == null || "".equals(stratname)) {
stratname = "best_guess";
LOGGER.log(
Level.FINE,
"No default regionating strategy has been configured in "
+ name
+ "; using automatic best-guess strategy.");
}
}
if (stratname != null) {
regionatingStrategy = findStrategyByName(stratname);
// if a strategy was specified but we did not find it, let the user
// know
if (regionatingStrategy == null)
throw new ServiceException("Unknown regionating strategy " + stratname);
}
// try to load less features by leveraging regionating strategy and the
// SLD
Filter regionatingFilter = Filter.INCLUDE;
if (regionatingStrategy != null)
regionatingFilter = regionatingStrategy.getFilter(mapContent, layer);
Filter ruleFilter =
summarizeRuleFilters(
getLayerRules(featureSource.getSchema(), layer.getStyle()), scaleDenominator);
Filter finalFilter = joinFilters(q.getFilter(), ruleFilter, regionatingFilter);
if (finalFilter == Filter.EXCLUDE) {
// if we don't have any feature to return
return null;
}
q.setFilter(finalFilter);
// make sure we output in 4326 since that's what KML mandates
CoordinateReferenceSystem wgs84;
try {
wgs84 = CRS.decode("EPSG:4326");
} catch (Exception e) {
throw new RuntimeException(
"Cannot decode EPSG:4326, the CRS subsystem must be badly broken...");
}
if (sourceCrs != null && !CRS.equalsIgnoreMetadata(wgs84, sourceCrs)) {
return new ReprojectFeatureResults(featureSource.getFeatures(q), wgs84);
}
return featureSource.getFeatures(q);
}
@Override
public void setVisible(boolean visible) {
super.setVisible(visible);
if (_myLayer != null) _myLayer.setVisible(visible);
}
