/** Creates a new PointSymbolizer object. */
public PointSymbolizer() {
super(null, "org.deegree.graphics.displayelements.PointDisplayElement");
Stroke stroke = new Stroke();
Fill fill = new Fill();
Mark mark = new Mark("square", stroke, fill);
graphic = StyleFactory.createGraphic(null, mark, 1, 5, 0);
}
@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;
}
/**
* Obtains the subset definition object from the environment for a given table.
*
* @param env execution environment
* @param tlabel table parameter label
* @param styleFactory factory which can examine the environment for plotting style information
*/
private SubsetDef[] getSubsetDefinitions(
Environment env, String tlabel, StyleFactory styleFactory) throws TaskException {
/* Work out which parameter suffixes are being used to identify
* different subsets for the table with parameter suffix tlabel.
* This is done by finding all the parameters which start
* "subset"+tlabel and pulling off their suffixes. These suffixes
* are then applied to other parameter stems for obtaining other
* per-subset parameter values. */
String[] paramNames = env.getNames();
String stPrefix = SUBSET_PREFIX + tlabel;
String[] subLabels = getSuffixes(paramNames, stPrefix);
Arrays.sort(subLabels);
int nset = subLabels.length;
/* If there are no subsets for this table, consider it the same as
* a single subset with inclusion of all points. */
if (nset == 0) {
Parameter nameParam = createSubsetNameParameter(tlabel);
nameParam.setDefault(tlabel);
String name = nameParam.stringValue(env);
return new SubsetDef[] {
new SubsetDef(tlabel, "true", name, styleFactory.getStyle(env, tlabel)),
};
}
/* If there is at least one subset, gather the information required
* to construct a SubsetDef object describing its characteristics. */
else {
SubsetDef[] sdefs = new SubsetDef[nset];
for (int is = 0; is < nset; is++) {
String stLabel = tlabel + subLabels[is];
String expr = createSubsetExpressionParameter(stLabel).stringValue(env);
Parameter nameParam = createSubsetNameParameter(stLabel);
nameParam.setDefault(expr);
String name = nameParam.stringValue(env);
sdefs[is] = new SubsetDef(stLabel, expr, name, styleFactory.getStyle(env, stLabel));
}
return sdefs;
}
}