private boolean evaluateComposite() {
final Expression opacity = styleElement.getOpacity();
if (GO2Utilities.isStatic(opacity)) {
float j2dOpacity = GO2Utilities.evaluate(opacity, null, 1f, 0f, 1f);
// we return false, opacity is 0 no need to cache or draw anything
if (j2dOpacity == 0) {
isStaticVisible = VisibilityState.UNVISIBLE;
return false;
}
// this style is visible
if (isStaticVisible == VisibilityState.NOT_DEFINED) isStaticVisible = VisibilityState.VISIBLE;
// we cache the composite
cachedComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, j2dOpacity);
} else {
// this style visibility is dynamic
if (isStaticVisible != VisibilityState.UNVISIBLE) isStaticVisible = VisibilityState.DYNAMIC;
isStatic = false;
GO2Utilities.getRequieredAttributsName(opacity, requieredAttributs);
}
return true;
}
@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;
}
private boolean evaluatePaint() {
final GraphicFill graphicFill = styleElement.getGraphicFill();
if (graphicFill != null) {
cachedGraphic = CachedGraphic.cache(graphicFill);
if (cachedGraphic.isStaticVisible() == VisibilityState.UNVISIBLE) {
// graphic is not visible even if some value are dynamic
// this fill is not visible neither
isStaticVisible = VisibilityState.UNVISIBLE;
return false;
} else if (cachedGraphic.isStaticVisible() == VisibilityState.DYNAMIC) {
// graphic visibility is dynamic, so this fill too
if (isStaticVisible != VisibilityState.UNVISIBLE) isStaticVisible = VisibilityState.DYNAMIC;
} else {
// this graphic is visible
if (isStaticVisible == VisibilityState.NOT_DEFINED)
isStaticVisible = VisibilityState.VISIBLE;
}
cachedGraphic.getRequieredAttributsName(requieredAttributs);
} else {
final Expression expColor = styleElement.getColor();
if (GO2Utilities.isStatic(expColor)) {
Color j2dColor = GO2Utilities.evaluate(expColor, null, Color.class, Color.BLACK);
// we return false, opacity is 0 no need to cache or draw anything
if (j2dColor.getAlpha() == 0) {
isStaticVisible = VisibilityState.UNVISIBLE;
return false;
}
// this style is visible even if something else is dynamic
// evaluatePaint may change this value
if (isStaticVisible == VisibilityState.NOT_DEFINED)
isStaticVisible = VisibilityState.VISIBLE;
// we cache the paint
cachedPaint = j2dColor;
} else {
// this style visibility is dynamic
if (isStaticVisible != VisibilityState.UNVISIBLE) isStaticVisible = VisibilityState.DYNAMIC;
isStatic = false;
GO2Utilities.getRequieredAttributsName(expColor, requieredAttributs);
}
}
// TODO missing Graphic Stroke
return true;
}
private boolean evaluateStroke() {
final float[] dashArray = styleElement.getDashArray();
final Expression expOffset = styleElement.getDashOffset();
final Expression expLineCap = styleElement.getLineCap();
final Expression expLineJoin = styleElement.getLineJoin();
final Expression expWidth = styleElement.getWidth();
boolean strokeStatic = true;
float[] candidateDashes = null;
float candidateOffset = Float.NaN;
int candidateCap = -1;
int candidateJoin = -1;
float candidateWidth = Float.NaN;
candidateDashes = GO2Utilities.validDashes(dashArray);
// offset ----------------------------------------------
if (GO2Utilities.isStatic(expOffset)) {
candidateOffset = GO2Utilities.evaluate(expOffset, null, Float.class, 1f);
} else {
strokeStatic = false;
GO2Utilities.getRequieredAttributsName(expOffset, requieredAttributs);
}
// line width ------------------------------------------
if (GO2Utilities.isStatic(expWidth)) {
candidateWidth = GO2Utilities.evaluate(expWidth, null, Float.class, 1f);
// we return false, width is 0 no need to cache or draw anything
if (candidateWidth == 0) {
isStaticVisible = VisibilityState.UNVISIBLE;
return false;
}
// this style is visible
if (isStaticVisible == VisibilityState.NOT_DEFINED) isStaticVisible = VisibilityState.VISIBLE;
} else {
// this style visibility is dynamic
if (isStaticVisible != VisibilityState.UNVISIBLE) isStaticVisible = VisibilityState.DYNAMIC;
strokeStatic = false;
GO2Utilities.getRequieredAttributsName(expWidth, requieredAttributs);
}
// line cap and join---------------------------------------------
if (cachedWidth <= 2.5f) {
// line cap and join are invisible under this size
candidateCap = BasicStroke.CAP_SQUARE;
candidateJoin = BasicStroke.JOIN_MITER;
} else {
if (GO2Utilities.isStatic(expLineCap)) {
final String cap =
GO2Utilities.evaluate(expLineCap, null, String.class, STROKE_CAP_BUTT_STRING);
if (STROKE_CAP_BUTT_STRING.equalsIgnoreCase(cap)) candidateCap = BasicStroke.CAP_BUTT;
else if (STROKE_CAP_SQUARE_STRING.equalsIgnoreCase(cap))
candidateCap = BasicStroke.CAP_SQUARE;
else if (STROKE_CAP_ROUND_STRING.equalsIgnoreCase(cap))
candidateCap = BasicStroke.CAP_ROUND;
else candidateCap = BasicStroke.CAP_BUTT;
} else {
strokeStatic = false;
GO2Utilities.getRequieredAttributsName(expLineCap, requieredAttributs);
}
if (GO2Utilities.isStatic(expLineJoin)) {
final String join =
GO2Utilities.evaluate(expLineJoin, null, String.class, STROKE_JOIN_BEVEL_STRING);
if (STROKE_JOIN_BEVEL_STRING.equalsIgnoreCase(join)) candidateJoin = BasicStroke.JOIN_BEVEL;
else if (STROKE_JOIN_MITRE_STRING.equalsIgnoreCase(join))
candidateJoin = BasicStroke.JOIN_MITER;
else if (STROKE_JOIN_ROUND_STRING.equalsIgnoreCase(join))
candidateJoin = BasicStroke.JOIN_ROUND;
else candidateJoin = BasicStroke.JOIN_BEVEL;
} else {
strokeStatic = false;
GO2Utilities.getRequieredAttributsName(expLineJoin, requieredAttributs);
}
}
// we cache each possible expression ------------------------------
this.cachedDashes = candidateDashes;
if (!Float.isNaN(candidateOffset))
cachedDashOffset = (candidateOffset > 0) ? candidateOffset : 0;
if (candidateCap != -1) cachedCap = candidateCap;
if (candidateJoin != -1) cachedJoin = candidateJoin;
if (!Float.isNaN(candidateWidth)) {
cachedWidth = candidateWidth;
if (cachedWidth < 0) cachedWidth = 0f;
}
// if static we can can cache the stroke directly----------------------
if (strokeStatic) {
// we can never cache the java2d stroke seens it's size depend on the symbolizer unit of
// mesure
if (cachedDashes != null) {
cachedStroke =
new BasicStroke(
candidateWidth, candidateCap, candidateJoin, 10f, cachedDashes, cachedDashOffset);
} else {
cachedStroke = new BasicStroke(candidateWidth, candidateCap, candidateJoin, 10f);
}
} else {
this.isStatic = false;
}
return true;
}