// This can come on any thread. If we are in the process of reloading
// the image and determining our state (loading == true) we don't fire
// preference changed, or repaint, we just reset the fWidth/fHeight as
// necessary and return. This is ok as we know when loading finishes
// it will pick up the new height/width, if necessary.
public boolean imageUpdate(Image img, int flags, int x, int y, int width, int height) {
if (fImage == null || fImage != img) return false;
// Bail out if there was an error:
if ((flags & (ABORT | ERROR)) != 0) {
fImage = null;
repaint(0);
return false;
}
// Resize image if necessary:
short changed = 0;
if ((flags & ImageObserver.HEIGHT) != 0)
if (!getElement().getAttributes().isDefined(HTML.Attribute.HEIGHT)) {
changed |= 1;
}
if ((flags & ImageObserver.WIDTH) != 0)
if (!getElement().getAttributes().isDefined(HTML.Attribute.WIDTH)) {
changed |= 2;
}
synchronized (this) {
if ((changed & 1) == 1) {
fWidth = width;
}
if ((changed & 2) == 2) {
fHeight = height;
}
if (loading) {
// No need to resize or repaint, still in the process of
// loading.
return true;
}
}
if (changed != 0) {
// May need to resize myself, asynchronously:
if (DEBUG) System.out.println("ImageView: resized to " + fWidth + "x" + fHeight);
Document doc = getDocument();
try {
if (doc instanceof AbstractDocument) {
((AbstractDocument) doc).readLock();
}
preferenceChanged(this, true, true);
} finally {
if (doc instanceof AbstractDocument) {
((AbstractDocument) doc).readUnlock();
}
}
return true;
}
// Repaint when done or when new pixels arrive:
if ((flags & (FRAMEBITS | ALLBITS)) != 0) repaint(0);
else if ((flags & SOMEBITS) != 0) if (sIsInc) repaint(sIncRate);
return ((flags & ALLBITS) == 0);
}
