📄 serialutilities.java
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final double y = stream.readDouble();
final double w = stream.readDouble();
final double h = stream.readDouble();
result = new Rectangle2D.Double(x, y, w, h);
}
else if (c.equals(Ellipse2D.class)) {
final double x = stream.readDouble();
final double y = stream.readDouble();
final double w = stream.readDouble();
final double h = stream.readDouble();
result = new Ellipse2D.Double(x, y, w, h);
}
else if (c.equals(Arc2D.class)) {
final double x = stream.readDouble();
final double y = stream.readDouble();
final double w = stream.readDouble();
final double h = stream.readDouble();
final double as = stream.readDouble(); // Angle Start
final double ae = stream.readDouble(); // Angle Extent
final int at = stream.readInt(); // Arc type
result = new Arc2D.Double(x, y, w, h, as, ae, at);
}
else if (c.equals(GeneralPath.class)) {
final GeneralPath gp = new GeneralPath();
final float[] args = new float[6];
boolean hasNext = stream.readBoolean();
while (!hasNext) {
final int type = stream.readInt();
for (int i = 0; i < 6; i++) {
args[i] = stream.readFloat();
}
switch (type) {
case PathIterator.SEG_MOVETO :
gp.moveTo(args[0], args[1]);
break;
case PathIterator.SEG_LINETO :
gp.lineTo(args[0], args[1]);
break;
case PathIterator.SEG_CUBICTO :
gp.curveTo(args[0], args[1], args[2],
args[3], args[4], args[5]);
break;
case PathIterator.SEG_QUADTO :
gp.quadTo(args[0], args[1], args[2], args[3]);
break;
case PathIterator.SEG_CLOSE :
gp.closePath();
break;
default :
throw new RuntimeException(
"JFreeChart - No path exists");
}
gp.setWindingRule(stream.readInt());
hasNext = stream.readBoolean();
}
result = gp;
}
else {
result = (Shape) stream.readObject();
}
}
return result;
}
/**
* Serialises a <code>Shape</code> object.
*
* @param shape the shape object (<code>null</code> permitted).
* @param stream the output stream (<code>null</code> not permitted).
*
* @throws IOException if there is an I/O error.
*/
public static void writeShape(final Shape shape,
final ObjectOutputStream stream)
throws IOException {
if (stream == null) {
throw new IllegalArgumentException("Null 'stream' argument.");
}
if (shape != null) {
stream.writeBoolean(false);
if (shape instanceof Line2D) {
final Line2D line = (Line2D) shape;
stream.writeObject(Line2D.class);
stream.writeDouble(line.getX1());
stream.writeDouble(line.getY1());
stream.writeDouble(line.getX2());
stream.writeDouble(line.getY2());
}
else if (shape instanceof Rectangle2D) {
final Rectangle2D rectangle = (Rectangle2D) shape;
stream.writeObject(Rectangle2D.class);
stream.writeDouble(rectangle.getX());
stream.writeDouble(rectangle.getY());
stream.writeDouble(rectangle.getWidth());
stream.writeDouble(rectangle.getHeight());
}
else if (shape instanceof Ellipse2D) {
final Ellipse2D ellipse = (Ellipse2D) shape;
stream.writeObject(Ellipse2D.class);
stream.writeDouble(ellipse.getX());
stream.writeDouble(ellipse.getY());
stream.writeDouble(ellipse.getWidth());
stream.writeDouble(ellipse.getHeight());
}
else if (shape instanceof Arc2D) {
final Arc2D arc = (Arc2D) shape;
stream.writeObject(Arc2D.class);
stream.writeDouble(arc.getX());
stream.writeDouble(arc.getY());
stream.writeDouble(arc.getWidth());
stream.writeDouble(arc.getHeight());
stream.writeDouble(arc.getAngleStart());
stream.writeDouble(arc.getAngleExtent());
stream.writeInt(arc.getArcType());
}
else if (shape instanceof GeneralPath) {
stream.writeObject(GeneralPath.class);
final PathIterator pi = shape.getPathIterator(null);
final float[] args = new float[6];
stream.writeBoolean(pi.isDone());
while (!pi.isDone()) {
final int type = pi.currentSegment(args);
stream.writeInt(type);
// TODO: could write this to only stream the values
// required for the segment type
for (int i = 0; i < 6; i++) {
stream.writeFloat(args[i]);
}
stream.writeInt(pi.getWindingRule());
pi.next();
stream.writeBoolean(pi.isDone());
}
}
else {
stream.writeObject(shape.getClass());
stream.writeObject(shape);
}
}
else {
stream.writeBoolean(true);
}
}
/**
* Reads a <code>Point2D</code> object that has been serialised by the
* {@link #writePoint2D(Point2D, ObjectOutputStream)} method.
*
* @param stream the input stream (<code>null</code> not permitted).
*
* @return The point object (possibly <code>null</code>).
*
* @throws IOException if there is an I/O problem.
*/
public static Point2D readPoint2D(final ObjectInputStream stream)
throws IOException {
if (stream == null) {
throw new IllegalArgumentException("Null 'stream' argument.");
}
Point2D result = null;
final boolean isNull = stream.readBoolean();
if (!isNull) {
final double x = stream.readDouble();
final double y = stream.readDouble();
result = new Point2D.Double(x, y);
}
return result;
}
/**
* Serialises a <code>Point2D</code> object.
*
* @param p the point object (<code>null</code> permitted).
* @param stream the output stream (<code>null</code> not permitted).
*
* @throws IOException if there is an I/O error.
*/
public static void writePoint2D(final Point2D p,
final ObjectOutputStream stream)
throws IOException {
if (stream == null) {
throw new IllegalArgumentException("Null 'stream' argument.");
}
if (p != null) {
stream.writeBoolean(false);
stream.writeDouble(p.getX());
stream.writeDouble(p.getY());
}
else {
stream.writeBoolean(true);
}
}
/**
* Reads a <code>AttributedString</code> object that has been serialised by
* the {@link SerialUtilities#writeAttributedString(AttributedString,
* ObjectOutputStream)} method.
*
* @param stream the input stream (<code>null</code> not permitted).
*
* @return The attributed string object (possibly <code>null</code>).
*
* @throws IOException if there is an I/O problem.
* @throws ClassNotFoundException if there is a problem loading a class.
*/
public static AttributedString readAttributedString(
ObjectInputStream stream)
throws IOException, ClassNotFoundException {
if (stream == null) {
throw new IllegalArgumentException("Null 'stream' argument.");
}
AttributedString result = null;
final boolean isNull = stream.readBoolean();
if (!isNull) {
// read string and attributes then create result
String plainStr = (String) stream.readObject();
result = new AttributedString(plainStr);
char c = stream.readChar();
int start = 0;
while (c != CharacterIterator.DONE) {
int limit = stream.readInt();
Map atts = (Map) stream.readObject();
result.addAttributes(atts, start, limit);
start = limit;
c = stream.readChar();
}
}
return result;
}
/**
* Serialises an <code>AttributedString</code> object.
*
* @param as the attributed string object (<code>null</code> permitted).
* @param stream the output stream (<code>null</code> not permitted).
*
* @throws IOException if there is an I/O error.
*/
public static void writeAttributedString(AttributedString as,
ObjectOutputStream stream) throws IOException {
if (stream == null) {
throw new IllegalArgumentException("Null 'stream' argument.");
}
if (as != null) {
stream.writeBoolean(false);
AttributedCharacterIterator aci = as.getIterator();
// build a plain string from aci
// then write the string
StringBuffer plainStr = new StringBuffer();
char current = aci.first();
while (current != CharacterIterator.DONE) {
plainStr = plainStr.append(current);
current = aci.next();
}
stream.writeObject(plainStr.toString());
// then write the attributes and limits for each run
current = aci.first();
int begin = aci.getBeginIndex();
while (current != CharacterIterator.DONE) {
// write the current character - when the reader sees that this
// is not CharacterIterator.DONE, it will know to read the
// run limits and attributes
stream.writeChar(current);
// now write the limit, adjusted as if beginIndex is zero
int limit = aci.getRunLimit();
stream.writeInt(limit - begin);
// now write the attribute set
Map atts = new HashMap(aci.getAttributes());
stream.writeObject(atts);
current = aci.setIndex(limit);
}
// write a character that signals to the reader that all runs
// are done...
stream.writeChar(CharacterIterator.DONE);
}
else {
// write a flag that indicates a null
stream.writeBoolean(true);
}
}
}
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