/**
* Constructs an <code>EncodedImageReference</code> with an image.
*
* @param image A java.awt.Image to be displayed. If you intend to extend this class and override
* the getImage() method to return images only as they are needed, then you may pass null to
* this parameter.
*/
public EncodedImageReference(Image image) {
this.internalImage = image;
if (image != null && ImageKit.hasAlphaChannel(image)) encoder = new GifEncoder();
else encoder = new PngEncoder();
refEncodedBytes = new SoftReference(null);
keptInMemory = false;
valid = false;
}
/** @see java.io.Serializable */
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
in.defaultReadObject();
Class encoderClass = (Class) in.readObject();
try {
encoder = (ImageEncoder) encoderClass.newInstance();
} catch (Exception e) {
throw new IOException(
"Unable to instanstiate the encoder class : "
+ encoderClass.getName()
+ " : "
+ e.toString());
}
valid = false;
refEncodedBytes = new SoftReference(null);
this.internalImage = ImageKit.readSerializedImage(in);
}
/** @see java.io.Serializable */
private void writeObject(ObjectOutputStream out) throws IOException {
out.defaultWriteObject();
out.writeObject(encoder.getClass());
ImageKit.writeSerializedImage(out, getImage());
}