Pair<Stroke, Continuation<Stroke>> parseStroke(XMLStreamReader in) throws XMLStreamException {
in.require(START_ELEMENT, null, "Stroke");
Stroke base = new Stroke();
Continuation<Stroke> contn = null;
while (!(in.isEndElement() && in.getLocalName().equals("Stroke"))) {
in.nextTag();
if (in.getLocalName().endsWith("Parameter")) {
contn = parseParameter(contn, in, base);
} else if (in.getLocalName().equals("GraphicFill")) {
contn = parseGraphicFill(contn, in, base);
} else if (in.getLocalName().equals("GraphicStroke")) {
contn = parseGraphicStroke(contn, in, base);
} else if (in.isStartElement()) {
LOG.error("Found unknown element '{}', skipping.", in.getLocalName());
skipElement(in);
}
}
in.require(END_ELEMENT, null, "Stroke");
return new Pair<Stroke, Continuation<Stroke>>(base, contn);
}
/**
* Forwards the given {@link XMLStreamReader} to the specified element or to the end of the
* enclosing element/document if there is no such element.
*
* @param reader reader to forward, must not be <code>null</code>
* @param elementName element to forward to, must not be <code>null</code>
* @throws XMLStreamException
*/
public static boolean skipToElementOnSameLevel(XMLStreamReader reader, QName elementName)
throws XMLStreamException {
while (reader.isStartElement() && !elementName.equals(reader.getName())) {
skipElement(reader);
nextElement(reader);
}
return reader.isStartElement() && elementName.equals(reader.getName());
}
private Continuation<Stroke> parseGraphicStroke(
Continuation<Stroke> contn, XMLStreamReader in, Stroke base) throws XMLStreamException {
while (!(in.isEndElement() && in.getLocalName().equals("GraphicStroke"))) {
in.nextTag();
if (in.getLocalName().equals("Graphic")) {
final Pair<Graphic, Continuation<Graphic>> pair = context.graphicParser.parseGraphic(in);
if (pair != null) {
base.stroke = pair.first;
if (pair.second != null) {
contn =
new Continuation<Stroke>(contn) {
@Override
public void updateStep(
Stroke base, Feature f, XPathEvaluator<Feature> evaluator) {
pair.second.evaluate(base.stroke, f, evaluator);
}
};
}
}
in.require(END_ELEMENT, null, "Graphic");
} else if (in.getLocalName().equals("InitialGap")) {
contn =
context.parser.updateOrContinue(
in,
"InitialGap",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
obj.strokeInitialGap = Double.parseDouble(val);
}
},
contn)
.second;
in.require(END_ELEMENT, null, "InitialGap");
} else if (in.getLocalName().equals("Gap")) {
contn =
context.parser.updateOrContinue(
in,
"Gap",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
obj.strokeGap = Double.parseDouble(val);
}
},
contn)
.second;
in.require(END_ELEMENT, null, "Gap");
} else if (in.getLocalName().equals("PositionPercentage")) {
contn =
context.parser.updateOrContinue(
in,
"PositionPercentage",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
obj.positionPercentage = Double.parseDouble(val);
}
},
contn)
.second;
in.require(END_ELEMENT, null, "PositionPercentage");
} else if (in.isStartElement()) {
Location loc = in.getLocation();
LOG.error(
"Found unknown element '{}' at line {}, column {}, skipping.",
new Object[] {in.getLocalName(), loc.getLineNumber(), loc.getColumnNumber()});
skipElement(in);
}
}
return contn;
}
private Continuation<Stroke> parseParameter(
Continuation<Stroke> contn, XMLStreamReader in, Stroke base) throws XMLStreamException {
String name = in.getAttributeValue(null, "name");
if (name.equals("stroke")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
// keep alpha value
int alpha = obj.color.getAlpha();
obj.color = decodeWithAlpha(val);
obj.color =
new Color(
obj.color.getRed(), obj.color.getGreen(), obj.color.getBlue(), alpha);
}
},
contn)
.second;
} else if (name.equals("stroke-opacity")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
// keep original color
float alpha = Float.parseFloat(val);
float[] cols = obj.color.getRGBColorComponents(null);
obj.color = new Color(cols[0], cols[1], cols[2], alpha);
}
},
contn)
.second;
} else if (name.equals("stroke-width")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
obj.width = Double.parseDouble(val);
}
},
contn)
.second;
} else if (name.equals("stroke-linejoin")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
try {
obj.linejoin = LineJoin.valueOf(val.toUpperCase());
} catch (IllegalArgumentException e) {
LOG.warn("Used invalid value '{}' for line join.", val);
obj.linejoin = ROUND;
}
}
},
contn)
.second;
} else if (name.equals("stroke-linecap")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
try {
obj.linecap = LineCap.valueOf(val.toUpperCase());
} catch (IllegalArgumentException e) {
LOG.warn("Used invalid value '{}' for line cap.", val);
obj.linecap = BUTT;
}
}
},
contn)
.second;
} else if (name.equals("stroke-dasharray")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
// , is not strictly allowed, but we don't lose anything by being flexible
if (val.contains(",")) {
obj.dasharray = splitAsDoubles(val, ",");
} else {
obj.dasharray = splitAsDoubles(val, "\\s");
}
}
},
contn)
.second;
} else if (name.equals("stroke-dashoffset")) {
contn =
context.parser.updateOrContinue(
in,
"Parameter",
base,
new Updater<Stroke>() {
@Override
public void update(Stroke obj, String val) {
obj.dashoffset = Double.parseDouble(val);
}
},
contn)
.second;
} else {
Location loc = in.getLocation();
LOG.error(
"Found unknown parameter '{}' at line {}, column {}, skipping.",
new Object[] {name, loc.getLineNumber(), loc.getColumnNumber()});
skipElement(in);
}
in.require(END_ELEMENT, null, null);
return contn;
}
