/**
* Gets the image using the specified dimension.
*
* @param d The <code>Dimension</code> of the requested image. Rescaling will be performed if
* necessary.
* @return The <code>Image</code> with the required dimension.
*/
public Image getImage(Dimension d) {
final Image im = getImage();
if (im == null || (im.getWidth(null) == d.width && im.getHeight(null) == d.height)) return im;
synchronized (loadingLock) {
final Image cached = scaledImages.get(d);
if (cached != null) return cached;
MediaTracker mt = new MediaTracker(_c);
try {
// Use SCALE_REPLICATE instead of SCALE_SMOOTH to avoid
// ClassCastException.
// TODO (perhaps): find a better solution.
Image scaled = im.getScaledInstance(d.width, d.height, Image.SCALE_REPLICATE);
mt.addImage(scaled, 0, d.width, d.height);
mt.waitForID(0);
int result = mt.statusID(0, false);
if (result == MediaTracker.COMPLETE) {
scaledImages.put(d, scaled);
} else {
logger.warning("Scaling image: " + getResourceLocator() + " => " + result);
}
return scaled;
} catch (Exception e) {
logger.log(Level.WARNING, "Failed to scale image: " + getResourceLocator(), e);
}
}
return null;
}
/** Preload the image. */
public void preload() {
synchronized (loadingLock) {
if (image == null) {
MediaTracker mt = new MediaTracker(_c);
Image im;
try {
// Explicitly check that the URI is valid before
// letting createImage go off and look for it, as the
// error it throws is cryptic.
URL url = getResourceLocator().toURL();
InputStream is = url.openStream();
is.close();
im = Toolkit.getDefaultToolkit().createImage(url);
mt.addImage(im, 0);
mt.waitForID(0);
if (mt.statusID(0, false) == MediaTracker.COMPLETE) {
image = im;
}
} catch (Exception e) {
logger.log(Level.WARNING, "Failed to load image from: " + getResourceLocator(), e);
}
}
}
}
