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
}
/** Create a default Style for feature display */
private Style createDefaultStyle() {
Rule rule = createRule(LINE_COLOUR, FILL_COLOUR);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
fts.rules().add(rule);
Style style = sf.createStyle();
style.featureTypeStyles().add(fts);
return style;
}
private Rule createRule(Color outlineColor, Color fillColor, boolean bSelected) {
Symbolizer symbolizer = null;
Fill fill = null;
Stroke stroke = sf.createStroke(ff.literal(outlineColor), ff.literal(LINE_WIDTH));
switch (geometryType) {
case POLYGON:
fill = sf.createFill(ff.literal(fillColor), ff.literal(OPACITY));
symbolizer = sf.createPolygonSymbolizer(stroke, fill, geometryAttributeName);
break;
case LINE:
symbolizer = sf.createLineSymbolizer(stroke, geometryAttributeName);
break;
case POINT:
fill = sf.createFill(ff.literal(fillColor), ff.literal(OPACITY));
Mark mark = sf.getTriangleMark();
mark.setFill(fill);
mark.setStroke(stroke);
Graphic graphic = sf.createDefaultGraphic();
graphic.graphicalSymbols().clear();
graphic.graphicalSymbols().add(mark);
graphic.setSize(ff.literal(bSelected ? SELECTED_POINT_SIZE : POINT_SIZE));
symbolizer = sf.createPointSymbolizer(graphic, geometryAttributeName);
}
Rule rule = sf.createRule();
rule.symbolizers().add(symbolizer);
return rule;
}
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;
}
/**
* Create a Style where features with given IDs are painted yellow, while others are painted with
* the default colors.
*/
private Style createSelectedStyle(Set<FeatureId> IDs) {
Rule selectedRule = createRule(SELECTED_COLOUR, SELECTED_COLOUR);
selectedRule.setFilter(ff.id(IDs));
Rule otherRule = createRule(LINE_COLOUR, FILL_COLOUR);
otherRule.setElseFilter(true);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
fts.rules().add(selectedRule);
fts.rules().add(otherRule);
Style style = sf.createStyle();
style.featureTypeStyles().add(fts);
return style;
}
/**
*
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*
* @generated modifiable
*/
public Object parse(ElementInstance instance, Node node, Object value) throws Exception {
Expression color = null;
Expression opacity = null;
Graphic graphicFill = null;
graphicFill = (Graphic) node.getChildValue("GraphicFill");
// "fill" (color)
// "fill-opacity"
List params = node.getChildValues(CssParameter.class);
for (Iterator itr = params.iterator(); itr.hasNext(); ) {
CssParameter param = (CssParameter) itr.next();
if ("fill".equals(param.getName())) {
color = param.getExpression();
}
if ("fill-opacity".equals(param.getName())) {
opacity = param.getExpression();
}
}
Fill fill = styleFactory.createFill(color);
if (opacity != null) {
fill.setOpacity(opacity);
}
return fill;
}
private Style createDefaultStyle(int idx, Set<FeatureId> IDs) {
Color fillColor = featureFills[idx];
Rule selectedRule = createRule(SELECTED_COLOUR, SELECTED_COLOUR, true);
selectedRule.setFilter(ff.id(IDs));
Rule rule = createRule(fillColor, fillColor, false);
rule.setElseFilter(true);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
fts.rules().add(selectedRule);
fts.rules().add(rule);
Style style = sf.createStyle();
style.featureTypeStyles().add(fts);
return style;
}
static Style makeStyle(StyleFactory factory, List<List<MiniRule>> ftStyles) {
Style style = factory.createStyle();
for (List<MiniRule> rules : ftStyles) {
FeatureTypeStyle ftStyle = factory.createFeatureTypeStyle();
for (MiniRule miniRule : rules) {
if (!miniRule.symbolizers.isEmpty()) {
Rule realRule = factory.createRule();
for (Symbolizer sym : miniRule.symbolizers) {
realRule.symbolizers().add(sym);
}
ftStyle.rules().add(realRule);
}
}
style.featureTypeStyles().add(ftStyle);
}
return style;
}
/**
* Creates a FeatureTypeStyle (core part of a SLD file). It is composed by Rules (tag <sld:Rule>)
* and each Rule can contain one Filter (filters values) and one Symbolizer (what's displayed). It
* Needs 2 factories: <br>
* - I_FilterFactory: gives Filters (tag <ogc:Filter>) <br>
* - I_SymbolizerFactory: gives Symbolizers (tag: <sld:PolygonSymbolizer> or
* <sld:PointSymbolizer>) <br>
*
* @param filterFact Filters Factory
* @param symbolizerFact Symbolizers Factory
* @return FeatureTypeStyle (List of Rules)
*/
private FeatureTypeStyle createFeatureTypeStyle(
I_FilterFactory filterFact, I_SymbolizerFactory symbolizerFact) {
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null);
FeatureTypeStyle fts = styleFactory.createFeatureTypeStyle();
Iterator<Symbolizer> symbolizers = symbolizerFact.iterator();
Iterator<Filter> filters = filterFact.iterator();
// use each factory iterator to get their items (Filter and Symbolizer)
// there should be as many symbolizers as many filters
while (symbolizers.hasNext() && filters.hasNext()) {
// create a Rule. A Rule is composed by one Filter and one Symbolizer
Rule rule = styleFactory.createRule();
Filter filter = filters.next();
rule.setSymbolizers(new Symbolizer[] {symbolizers.next()});
rule.setFilter(filter.getGISFilter());
rule.setName(filter.getName());
rule.setTitle(filter.getName());
fts.addRule(rule);
}
if (filters.hasNext()) {
throw new RuntimeException("BUG: more filters than symbolizers");
}
/*
* This piece of code can be added to add a stroke around the polygons.
* This rule does not include a filter, therefore, it is globally applied.
*/
/*
StyleBuilder styleBuilder = new StyleBuilder();
Rule rule = styleFactory.createRule();
Stroke stroke = styleFactory.createStroke(
styleBuilder.literalExpression(Color.BLACK), // color
styleBuilder.literalExpression(1), // width
styleBuilder.literalExpression(1.0)); // opacity
LineSymbolizer ls = styleFactory.createLineSymbolizer(stroke, "");
rule.setSymbolizers(new Symbolizer[] {ls});
fts.addRule(rule);
*/
return fts;
}
@SuppressWarnings("unchecked")
private static Style createStyle(SimpleFeatureSource source, String fieldName) throws Exception {
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory();
FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
Function colourFn = ff.function("colorlookup", ff.literal(source), ff.property(fieldName));
Stroke stroke =
styleFactory.createStroke(
colourFn,
ff.literal(1.0f), // line
// width
ff.literal(1.0f)); // opacity
Fill fill = styleFactory.createFill(colourFn, ff.literal(1.0f)); // opacity
Class<?> geomClass = source.getSchema().getGeometryDescriptor().getType().getBinding();
Symbolizer sym = null;
Geometries geomType = Geometries.getForBinding((Class<? extends Geometry>) geomClass);
switch (geomType) {
case POLYGON:
case MULTIPOLYGON:
sym = styleFactory.createPolygonSymbolizer(stroke, fill, null);
break;
case LINESTRING:
case MULTILINESTRING:
sym = styleFactory.createLineSymbolizer(stroke, null);
break;
case POINT:
case MULTIPOINT:
Graphic gr = styleFactory.createDefaultGraphic();
gr.graphicalSymbols().clear();
Mark mark = styleFactory.getCircleMark();
mark.setFill(fill);
mark.setStroke(stroke);
gr.graphicalSymbols().add(mark);
gr.setSize(ff.literal(10.0f));
sym = styleFactory.createPointSymbolizer(gr, null);
break;
default:
throw new IllegalArgumentException("Unsupported geometry type");
}
Style style = SLD.wrapSymbolizers(sym);
return style;
}
private void twoFeatureTypeStyles() {
// twoFeatureTypeStyles start
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory();
FilterFactory2 filterFactory = CommonFactoryFinder.getFilterFactory2();
Style style = styleFactory.getDefaultStyle();
// Feature type style 1
FeatureTypeStyle fts = styleFactory.createFeatureTypeStyle();
fts.featureTypeNames().add(new NameImpl("feature-type-1"));
style.featureTypeStyles().add(fts);
// Feature type style 2
FeatureTypeStyle fts2 = styleFactory.createFeatureTypeStyle();
fts2.featureTypeNames().add(new NameImpl("feature-type-2"));
// creating the rule 1
Rule rule1 = styleFactory.createRule();
rule1.setName("rule1");
Filter aFilter = filterFactory.id(Collections.singleton(filterFactory.featureId("FID")));
rule1.setFilter(aFilter);
fts2.rules().add(rule1);
// creating the rule 2
Rule rule2 = styleFactory.createRule();
rule2.setIsElseFilter(true);
rule2.setName("rule2");
fts2.rules().add(rule2);
style.featureTypeStyles().add(fts2);
// twoFeatureTypeStyles end
}
/**
* 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 convertToSLD_1_1() {
if (style == null) {
JOptionPane.showMessageDialog(this, "Style not defined");
return;
}
// Wrap style as an SLD
StyleFactory factory = CommonFactoryFinder.getStyleFactory();
StyledLayerDescriptor sld = factory.createStyledLayerDescriptor();
org.geotools.sld.v1_1.SLDConfiguration configuration =
new org.geotools.sld.v1_1.SLDConfiguration();
Encoder encoder = new org.geotools.xml.Encoder(configuration);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
encoder.encode(style, org.geotools.sld.bindings.SLD.STYLEDLAYERDESCRIPTOR, outputStream);
String document = outputStream.toString("UTF-8");
display(document, SLD_1_1);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
*
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*
* @generated modifiable
*/
public Object parse(ElementInstance instance, Node node, Object value) throws Exception {
TextSymbolizer ts = styleFactory.createTextSymbolizer();
// <xsd:element ref="sld:Geometry" minOccurs="0"/>
if (node.hasChild("Geometry")) {
Expression geometry = (Expression) node.getChildValue("Geometry");
if (geometry instanceof PropertyName) {
PropertyName propertyName = (PropertyName) geometry;
ts.setGeometryPropertyName(propertyName.getPropertyName());
} else {
ts.setGeometry(geometry);
}
}
// <xsd:element ref="sld:Label" minOccurs="0"/>
if (node.hasChild("Label")) {
ts.setLabel((Expression) node.getChildValue("Label"));
}
// <xsd:element ref="sld:Font" minOccurs="0"/>
if (node.hasChild("Font")) {
ts.setFonts(new Font[] {(Font) node.getChildValue("Font")});
}
// <xsd:element ref="sld:LabelPlacement" minOccurs="0"/>
if (node.hasChild("LabelPlacement")) {
ts.setPlacement((LabelPlacement) node.getChildValue("LabelPlacement"));
}
// <xsd:element ref="sld:Halo" minOccurs="0"/>
if (node.hasChild("Halo")) {
ts.setHalo((Halo) node.getChildValue("Halo"));
}
// <xsd:element ref="sld:Fill" minOccurs="0"/>
if (node.hasChild("Fill")) {
ts.setFill((Fill) node.getChildValue("Fill"));
}
if (node.hasChild("Priority")) {
ts.setPriority((Expression) node.getChildValue("Priority"));
}
// <xsd:element ref="sld:VendorOption" minOccurs="0" maxOccurs="unbounded"/>
for (CssParameter param : (List<CssParameter>) node.getChildValues(CssParameter.class)) {
ts.getOptions().put(param.getName(), param.getExpression().evaluate(null, String.class));
}
return ts;
}
/**
*
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*
* @generated modifiable
*/
public Object parse(ElementInstance instance, Node node, Object value) throws Exception {
RasterSymbolizer rs = styleFactory.createRasterSymbolizer();
// <xsd:element ref="sld:Geometry" minOccurs="0"/>
if (node.hasChild("Geometry")) {
PropertyName propertyName = (PropertyName) node.getChildValue("Geometry");
rs.setGeometryPropertyName(propertyName.getPropertyName());
}
// <xsd:element ref="sld:Opacity" minOccurs="0"/>
if (node.hasChild("Opacity")) {
rs.setOpacity((Expression) node.getChildValue("Opacity"));
}
// <xsd:element ref="sld:ChannelSelection" minOccurs="0"/>
if (node.hasChild("ChannelSelection")) {
rs.setChannelSelection((ChannelSelection) node.getChildValue("ChannelSelection"));
}
// <xsd:element ref="sld:OverlapBehavior" minOccurs="0"/>
if (node.hasChild("OverlapBehavior")) {
rs.setOverlapBehavior((OverlapBehavior) node.getChildValue("OverlapBehavior"));
}
// <xsd:element ref="sld:ColorMap" minOccurs="0"/>
if (node.hasChild("ColorMap")) {
rs.setColorMap((ColorMap) node.getChildValue("ColorMap"));
}
// <xsd:element ref="sld:ContrastEnhancement" minOccurs="0"/>
if (node.hasChild("ContrastEnhancement")) {
rs.setContrastEnhancement((ContrastEnhancement) node.getChildValue("ContrastEnhancement"));
}
// <xsd:element ref="sld:ShadedRelief" minOccurs="0"/>
if (node.hasChild("ShadedRelief")) {
rs.setShadedRelief((ShadedRelief) node.getChildValue("ShadedRelief"));
}
// <xsd:element ref="sld:ImageOutline" minOccurs="0"/>
if (node.hasChild("ImageOutline")) {
ImageOutline imageOutput = (ImageOutline) node.getChildValue("ImageOutline");
rs.setImageOutline(imageOutput.getSymbolizer());
}
return rs;
}
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
}