/** Get the hash code of a object. */
@Override
public int hashCodeOf(final DisplayItem obj) {
if (obj == null) {
return 0;
}
return obj.hashCode();
}
/**
* Compare two instances of the object and there relative offset that is needed for ordering
* this objects.
*/
@Override
public int compare(final DisplayItem o1, final DisplayItem o2) {
return o2.getZOrder() - o1.getZOrder();
}
/**
* Remove item from screen
*
* @param item
*/
public void remove(final DisplayItem item) {
synchronized (display) {
display.remove(item);
removedAreaList.add(new Rectangle(item.getLastDisplayRect()));
}
}
