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 quickTextSymbolizer() {
// quickTextSymbolizer start
// "labelPoint" feature type style
StyleBuilder sb = new StyleBuilder();
FilterFactory2 ff = sb.getFilterFactory();
// creation of the TextSymbolizer
AnchorPoint anchorPoint =
sb.createAnchorPoint(sb.attributeExpression("X"), sb.attributeExpression("Y"));
PointPlacement pointPlacement =
sb.createPointPlacement(anchorPoint, null, sb.literalExpression(0));
TextSymbolizer textSymbolizer =
sb.createTextSymbolizer(
sb.createFill(Color.BLACK),
new Font[] {sb.createFont("Lucida Sans", 10), sb.createFont("Arial", 10)},
sb.createHalo(),
sb.attributeExpression("name"),
pointPlacement,
null);
// creation of the Point symbolizer
Mark circle = sb.createMark(StyleBuilder.MARK_CIRCLE, Color.RED);
Graphic graph2 = sb.createGraphic(null, circle, null, 1, 4, 0);
PointSymbolizer pointSymbolizer = sb.createPointSymbolizer(graph2);
// creation of the style
Style style = sb.createStyle();
FeatureTypeStyle featureTypeStyle =
sb.createFeatureTypeStyle("labelPoint", new Symbolizer[] {textSymbolizer, pointSymbolizer});
style.featureTypeStyles().add(featureTypeStyle);
// creation of the style
// quickTextSymbolizer end
}
private static Symbolizer crossSymbolizer(
final String name, final StyleBuilder builder, final int crossSize, final Color pointColor) {
Mark cross = builder.createMark(name, pointColor, pointColor, 1);
Graphic graphic = builder.createGraphic(null, cross, null);
graphic.setSize(builder.literalExpression(crossSize));
return builder.createPointSymbolizer(graphic);
}
private void markTestSLD() {
// markTestSLD start
StyleBuilder sb = new StyleBuilder();
FilterFactory ff = sb.getFilterFactory();
Style style = sb.createStyle();
style.setName("MyStyle");
// "testPoint" feature type style
Mark testMark =
sb.createMark(sb.attributeExpression("name"), sb.createFill(Color.RED, 0.5), null);
Graphic graph =
sb.createGraphic(
null,
new Mark[] {testMark},
null,
sb.literalExpression(1),
sb.attributeExpression("size"),
sb.attributeExpression("rotation"));
style
.featureTypeStyles()
.add(sb.createFeatureTypeStyle("testPoint", sb.createPointSymbolizer(graph)));
// "labelPoint" feature type style
AnchorPoint anchorPoint =
sb.createAnchorPoint(sb.attributeExpression("X"), sb.attributeExpression("Y"));
PointPlacement pointPlacement =
sb.createPointPlacement(anchorPoint, null, sb.literalExpression(0));
TextSymbolizer textSymbolizer =
sb.createTextSymbolizer(
sb.createFill(Color.BLACK),
new Font[] {sb.createFont("Lucida Sans", 10), sb.createFont("Arial", 10)},
sb.createHalo(),
sb.attributeExpression("name"),
pointPlacement,
null);
Mark circle = sb.createMark(StyleBuilder.MARK_CIRCLE, Color.RED);
Graphic graph2 = sb.createGraphic(null, circle, null, 1, 4, 0);
PointSymbolizer pointSymbolizer = sb.createPointSymbolizer(graph2);
style
.featureTypeStyles()
.add(
sb.createFeatureTypeStyle(
"labelPoint", new Symbolizer[] {textSymbolizer, pointSymbolizer}));
// markTestSLD end
}
private void splatExample() {
// splatExample start
StyleBuilder builder = new StyleBuilder();
FilterFactory2 ff = builder.getFilterFactory();
Graphic splat = builder.createGraphic(null, builder.createMark("splat"), null);
PointSymbolizer symbolizer = builder.createPointSymbolizer(splat);
// builder will fill in all the other classes with defaults
Style style = builder.createStyle(symbolizer);
// splatExample 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
}
private void quickPointSymbolizer() {
// quickPointSymbolizer start
// "testPoint" feature type style
StyleBuilder sb = new StyleBuilder();
FilterFactory2 ff = sb.getFilterFactory();
Mark testMark =
sb.createMark(sb.attributeExpression("name"), sb.createFill(Color.RED, 0.5), null);
Graphic graph =
sb.createGraphic(
null, // An external graphics if needed
new Mark[] {testMark}, // a Mark if not an external graphics
null, // aSymbol
ff.literal(1), // opacity
ff.property("size"), // read from feature "size" attribute
ff.property("rotation")); // rotation, here read into the feature
PointSymbolizer aPointSymbolizer = sb.createPointSymbolizer(graph);
// creation of the style
Style style = sb.createStyle(aPointSymbolizer);
// quickPointSymbolizer end
}
public static Symbolizer[] getSymbolizers(
Class<? extends Geometry> type, Color baseColor, boolean useTransparency) {
StyleBuilder builder = new StyleBuilder();
Symbolizer[] syms = new Symbolizer[1];
if (LineString.class.isAssignableFrom(type) || MultiLineString.class.isAssignableFrom(type))
syms[0] = builder.createLineSymbolizer(baseColor, 2);
if (Point.class.isAssignableFrom(type) || MultiPoint.class.isAssignableFrom(type)) {
PointSymbolizer point = builder.createPointSymbolizer(builder.createGraphic());
FilterFactory ff = builder.getFilterFactory();
// point.getGraphic().getMarks()[0].setSize((Expression) ff.literal(10));
point.getGraphic().setSize(ff.literal(10));
Mark mark = (Mark) point.getGraphic().graphicalSymbols().get(0);
mark.setFill(builder.createFill(baseColor));
syms[0] = point;
}
if (Polygon.class.isAssignableFrom(type) || MultiPolygon.class.isAssignableFrom(type)) {
syms[0] =
builder.createPolygonSymbolizer(
builder.createStroke(baseColor, 2),
builder.createFill(baseColor, useTransparency ? .6 : 1.0));
}
return syms;
}
private Style createPointStyle() {
StyleBuilder sb = new StyleBuilder();
return sb.createStyle(sb.createPointSymbolizer());
}
