package org.geotools.styling.builder;
import org.geotools.styling.AnchorPoint;
import org.opengis.filter.expression.Expression;
/**
* AnchorPoint allows you specify which part of a graphic indicates the location.
*
* As an example if your graphic is a pin the AnchorPoint will be the end of the pin.
*
* <pre>
* <code>AnchorPointBuilder<?> b = new AnchorPointBuilder();
* AnchorPoint anchor = b.x(0.5).y(0.9).build();
* </code>
* </pre
*
* @author Jody Garnett (LISAsoft)
*
*
*
* @source $URL$
*/
public class AnchorPointBuilder extends AbstractStyleBuilder<AnchorPoint> {
private Expression x;
private Expression y;
public AnchorPointBuilder() {
this(null);
}
public AnchorPointBuilder(AbstractStyleBuilder<?> parent) {
super(parent);
reset();
}
public AnchorPoint build() {
if (unset) {
return null;
}
AnchorPoint anchorPoint = sf.anchorPoint(x, y);
if (parent == null) {
reset();
}
return anchorPoint;
}
public AnchorPointBuilder x(Expression x) {
this.x = x;
return this;
}
public AnchorPointBuilder x(double x) {
return x(literal(x));
}
public AnchorPointBuilder x(String cqlExpression) {
return x(cqlExpression(cqlExpression));
}
public AnchorPointBuilder y(Expression y) {
this.y = y;
return this;
}
public AnchorPointBuilder y(double y) {
return y(literal(y));
}
public AnchorPointBuilder y(String cqlExpression) {
return y(cqlExpression(cqlExpression));
}
public AnchorPointBuilder reset() {
x = literal(0);
y = literal(0);
unset = false;
return this;
}
public AnchorPointBuilder reset(AnchorPoint anchorPoint) {
if (anchorPoint == null) {
return reset();
}
x = anchorPoint.getAnchorPointX();
y = anchorPoint.getAnchorPointY();
unset = false;
return this;
}
public AnchorPointBuilder unset() {
return (AnchorPointBuilder) super.unset();
}
public AnchorPointBuilder reset(org.opengis.style.AnchorPoint anchorPoint) {
if (anchorPoint == null) {
return reset();
}
x = anchorPoint.getAnchorPointX();
y = anchorPoint.getAnchorPointY();
unset = false;
return this;
}
@Override
protected void buildStyleInternal(StyleBuilder sb) {
sb.featureTypeStyle().rule().text().labelText("label").pointPlacement().anchor()
.init(this);
}
}