@Override
protected void evaluate() {
if (!isNotEvaluated) return;
final Expression expLabel = styleElement.getLabel();
// we can not know so always visible
isStaticVisible = VisibilityState.VISIBLE;
if (GO2Utilities.isStatic(expLabel)) {
label = GO2Utilities.evaluate(expLabel, null, String.class, "No Label");
} else {
GO2Utilities.getRequieredAttributsName(expLabel, requieredAttributs);
isStatic = false;
}
cachedFont.getRequieredAttributsName(requieredAttributs);
cachedFill.getRequieredAttributsName(requieredAttributs);
cachedHalo.getRequieredAttributsName(requieredAttributs);
cachedPlacement.getRequieredAttributsName(requieredAttributs);
// no attributs needed replace with static empty list.
if (requieredAttributs.isEmpty()) {
requieredAttributs = EMPTY_ATTRIBUTS;
}
isNotEvaluated = false;
}
public Composite getFontComposite(final Object candidate) {
Composite composite;
if (cachedFill != null) {
composite = cachedFill.getJ2DComposite(candidate);
} else {
composite = AlphaComposite.SrcOver;
}
return composite;
}
public Paint getFontPaint(
final Object candidate,
final int x,
final int y,
final float coeff,
final RenderingHints hints) {
Paint paint;
if (cachedFill != null) {
paint = cachedFill.getJ2DPaint(candidate, x, y, coeff, hints);
} else {
paint = Color.BLACK;
}
return paint;
}
public CachedTextSymbolizer(
final TextSymbolizer symbolizer,
final SymbolizerRendererService<TextSymbolizer, ? extends CachedSymbolizer<TextSymbolizer>>
renderer) {
super(symbolizer, renderer);
final org.opengis.style.Font font = styleElement.getFont();
cachedFont = CachedFont.cache(font);
final Fill fill = styleElement.getFill();
cachedFill = CachedFill.cache(fill);
// halo can be null.
final Halo halo = styleElement.getHalo();
if (halo != null) {
cachedHalo = CachedHalo.cache(halo);
} else {
cachedHalo = null;
}
final LabelPlacement placement = styleElement.getLabelPlacement();
if (placement instanceof PointPlacement) {
cachedPlacement = CachedPointPlacement.cache((PointPlacement) placement);
} else if (placement instanceof LinePlacement) {
cachedPlacement = CachedLinePlacement.cache((LinePlacement) placement);
} else {
throw new IllegalArgumentException(
"A text symbolizer must have a placement set of type : PointPlacement or LinePlacement.");
}
styleElement.getFont();
// symbol.getGeometryPropertyName();
styleElement.getHalo();
styleElement.getLabel();
styleElement.getLabelPlacement();
styleElement.getUnitOfMeasure();
}