private void styleBuilderExample() throws Exception {
// styleBuilderExample start
//
// We are using the GeoTools StyleBuilder that is helpful for quickly making things
StyleBuilder builder = new StyleBuilder();
FilterFactory2 ff = builder.getFilterFactory();
// RULE 1
// first rule to draw cities
// define a point symbolizer representing a city
Graphic city = builder.createGraphic();
city.setSize(ff.literal(10));
city.graphicalSymbols().add(builder.createExternalGraphic("file:city.svg", "svg")); // svg
// preferred
city.graphicalSymbols().add(builder.createExternalGraphic("file:city.png", "png")); // png next
city.graphicalSymbols()
.add(builder.createMark(StyleBuilder.MARK_CIRCLE, Color.BLUE, Color.BLACK, 1));
PointSymbolizer pointSymbolizer = builder.createPointSymbolizer(city, "the_geom");
Rule rule1 = builder.createRule(pointSymbolizer);
rule1.setName("rule1");
rule1.getDescription().setTitle("City");
rule1.getDescription().setAbstract("Rule for drawing cities");
rule1.setFilter(ff.less(ff.property("POPULATION"), ff.literal(50000)));
//
// RULE 2 Default
Graphic dotGraphic =
builder.createGraphic(null, builder.createMark(StyleBuilder.MARK_CIRCLE), null);
PointSymbolizer dotSymbolize = builder.createPointSymbolizer(dotGraphic);
Rule rule2 = builder.createRule(dotSymbolize);
rule2.setIsElseFilter(true);
//
// define feature type styles used to actually define how features are rendered
Rule rules[] = new Rule[] {rule1, rule2};
FeatureTypeStyle featureTypeStyle = builder.createFeatureTypeStyle("Feature", rules);
//
// create a "user defined" style
Style style = builder.createStyle();
style.setName("style");
style.getDescription().setTitle("User Style");
style.getDescription().setAbstract("Definition of Style");
style.featureTypeStyles().add(featureTypeStyle);
// styleBuilderExample end
}
private void featureTypeStyleExample() {
// featureTypeStyleExample start
StyleBuilder styleBuilder = new StyleBuilder();
Style style = styleBuilder.createStyle();
PointSymbolizer pointSymbolizer = styleBuilder.createPointSymbolizer();
Graphic graphic = styleBuilder.createGraphic();
ExternalGraphic external =
styleBuilder.createExternalGraphic("file:///C:/images/house.gif", "image/gif");
graphic.graphicalSymbols().add(external);
graphic.graphicalSymbols().add(styleBuilder.createMark("circle"));
pointSymbolizer.setGraphic(graphic);
Rule rule = styleBuilder.createRule(pointSymbolizer);
FeatureTypeStyle featureTypeStyle = styleBuilder.createFeatureTypeStyle("Feature", rule);
style.featureTypeStyles().add(featureTypeStyle);
// featureTypeStyleExample end
}