private void sldExample() {
// sldExample start
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory();
StyledLayerDescriptor sld = styleFactory.createStyledLayerDescriptor();
sld.setName("example");
sld.setAbstract("Example Style Layer Descriptor");
UserLayer layer = styleFactory.createUserLayer();
layer.setName("layer");
FeatureTypeConstraint constraint =
styleFactory.createFeatureTypeConstraint("Feature", Filter.INCLUDE, null);
layer.layerFeatureConstraints().add(constraint);
Style style = styleFactory.createStyle();
style.getDescription().setTitle("Style");
style.getDescription().setAbstract("Definition of Style");
// define feature type styles used to actually
// define how features are rendered
//
layer.userStyles().add(style);
sld.layers().add(layer);
// sldExample end
}
StyledLayerDescriptor parse10(
Object input, ResourceLocator resourceLocator, EntityResolver entityResolver)
throws IOException {
Reader reader = null;
try {
// we need to close the reader if we grab one, but if it's a file it has
// to stay as such to allow relative resource resolution during the parse
if (!(input instanceof File)) {
reader = toReader(input);
input = reader;
}
SLDParser p = createSld10Parser(input, resourceLocator, entityResolver);
StyledLayerDescriptor sld = p.parseSLD();
if (sld.getStyledLayers().length == 0) {
// most likely a style that is not a valid sld, try to actually parse out a
// style and then wrap it in an sld
Style[] style = p.readDOM();
if (style.length > 0) {
NamedLayer l = styleFactory.createNamedLayer();
l.addStyle(style[0]);
sld.addStyledLayer(l);
}
}
return sld;
} finally {
IOUtils.closeQuietly(reader);
}
}
public static StyledLayerDescriptor createDefaultSLD(Style style) {
StyleFactory factory = CommonFactoryFinder.getStyleFactory();
StyledLayerDescriptor sld = factory.createStyledLayerDescriptor();
UserLayer layer = factory.createUserLayer();
// FeatureTypeConstraint ftc =
// styleFactory.createFeatureTypeConstraint(null, Filter.INCLUDE, null);
layer.setLayerFeatureConstraints(new FeatureTypeConstraint[] {null});
sld.addStyledLayer(layer);
layer.addUserStyle((org.geotools.styling.Style) style);
return sld;
}
private Style getStyle(final String styleName) {
Style style = STYLES.get(styleName);
if (style == null) {
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(GeoTools.getDefaultHints());
SLDParser parser = new SLDParser(styleFactory);
try {
parser.setInput(getClass().getResource(styleName));
} catch (IOException e) {
throw new RuntimeException(e);
}
StyledLayerDescriptor sld = parser.parseSLD();
UserLayer layer = (UserLayer) sld.getStyledLayers()[0];
style = layer.getUserStyles()[0];
STYLES.put(styleName, style);
}
return style;
}
/**
* Generate SLD file. Creates everything but the FeatureTypeStyle that must be provided.
*
* @param fts FeatureTypeStyle. Contains all the rules and therefore the filters and symbolizers
* @return StyledLayerDescriptor SLD file
*/
private StyledLayerDescriptor createSLD(FeatureTypeStyle fts) {
// create SLD
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null);
StyledLayerDescriptor sld = styleFactory.createStyledLayerDescriptor();
// add named layer
NamedLayer layer = styleFactory.createNamedLayer();
// wfs-ng: ensures we recover the correct typename
layer.setName(_command.getFeatureTypeName()); // name must match the layer name
fts.setName(_command.getFeatureTypeName());
sld.addStyledLayer(layer);
// add a custom style to the user layer
Style style = styleFactory.createStyle();
style.setName(_command.getFeatureTypeName());
style.setTitle(_command.getFeatureTypeName() + "_classification");
style.addFeatureTypeStyle(fts);
layer.addStyle(style);
return sld;
}
private void styleFactoryExample() throws Exception {
// styleFactoryExample start
//
// We are using the GeoTools styleFactory that allows access to get/set methods
org.geotools.styling.StyleFactory sf = CommonFactoryFinder.getStyleFactory();
FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
StyledLayerDescriptor sld = sf.createStyledLayerDescriptor();
sld.setName("sld");
sld.setTitle("Example");
sld.setAbstract("Example Style Layer Descriptor");
UserLayer layer = sf.createUserLayer();
layer.setName("layer");
//
// define constraint limited what features the sld applies to
FeatureTypeConstraint constraint =
sf.createFeatureTypeConstraint("Feature", Filter.INCLUDE, null);
layer.layerFeatureConstraints().add(constraint);
//
// create a "user defined" style
Style style = sf.createStyle();
style.setName("style");
style.getDescription().setTitle("User Style");
style.getDescription().setAbstract("Definition of Style");
//
// define feature type styles used to actually define how features are rendered
FeatureTypeStyle featureTypeStyle = sf.createFeatureTypeStyle();
// RULE 1
// first rule to draw cities
Rule rule1 = sf.createRule();
rule1.setName("rule1");
rule1.getDescription().setTitle("City");
rule1.getDescription().setAbstract("Rule for drawing cities");
rule1.setFilter(ff.less(ff.property("POPULATION"), ff.literal(50000)));
//
// create the graphical mark used to represent a city
Stroke stroke = sf.stroke(ff.literal("#000000"), null, null, null, null, null, null);
Fill fill = sf.fill(null, ff.literal(Color.BLUE), ff.literal(1.0));
// OnLineResource implemented by gt-metadata - so no factory!
OnLineResourceImpl svg = new OnLineResourceImpl(new URI("file:city.svg"));
svg.freeze(); // freeze to prevent modification at runtime
OnLineResourceImpl png = new OnLineResourceImpl(new URI("file:city.png"));
png.freeze(); // freeze to prevent modification at runtime
//
// List of symbols is considered in order with the rendering engine choosing
// the first one it can handle. Allowing for svg, png, mark order
List<GraphicalSymbol> symbols = new ArrayList<GraphicalSymbol>();
symbols.add(sf.externalGraphic(svg, "svg", null)); // svg preferred
symbols.add(sf.externalGraphic(png, "png", null)); // png preferred
symbols.add(sf.mark(ff.literal("circle"), fill, stroke)); // simple circle backup plan
Expression opacity = null; // use default
Expression size = ff.literal(10);
Expression rotation = null; // use default
AnchorPoint anchor = null; // use default
Displacement displacement = null; // use default
// define a point symbolizer of a small circle
Graphic city = sf.graphic(symbols, opacity, size, rotation, anchor, displacement);
PointSymbolizer pointSymbolizer =
sf.pointSymbolizer("point", ff.property("the_geom"), null, null, city);
rule1.symbolizers().add(pointSymbolizer);
featureTypeStyle.rules().add(rule1);
//
// RULE 2 Default
List<GraphicalSymbol> dotSymbols = new ArrayList<GraphicalSymbol>();
dotSymbols.add(sf.mark(ff.literal("circle"), null, null));
Graphic dotGraphic = sf.graphic(dotSymbols, null, ff.literal(3), null, null, null);
PointSymbolizer dotSymbolizer = sf.pointSymbolizer("dot", null, null, null, dotGraphic);
List<org.opengis.style.Symbolizer> symbolizers = new ArrayList<org.opengis.style.Symbolizer>();
symbolizers.add(dotSymbolizer);
Filter other = null; // null will mark this rule as "other" accepting all remaining features
Rule rule2 =
sf.rule("default", null, null, Double.MIN_VALUE, Double.MAX_VALUE, symbolizers, other);
featureTypeStyle.rules().add(rule2);
style.featureTypeStyles().add(featureTypeStyle);
layer.userStyles().add(style);
sld.layers().add(layer);
// styleFactoryExample end
}
