@Override
public void mouseMoved(MouseEvent e) {
final MouseEvent event = SwingUtilities.convertMouseEvent(e.getComponent(), e, getParent());
final boolean insideRec = getBounds().contains(event.getPoint());
boolean buttonsNotPressed =
(e.getModifiersEx()
& (InputEvent.BUTTON1_DOWN_MASK
| InputEvent.BUTTON2_DOWN_MASK
| InputEvent.BUTTON3_DOWN_MASK))
== 0;
if (!myPopupIsShowing && insideRec && buttonsNotPressed) {
showPopup(null, false);
} else if (myPopupIsShowing && !insideRec) {
final Component over =
SwingUtilities.getDeepestComponentAt(e.getComponent(), e.getX(), e.getY());
JPopupMenu popup = myUnderPopup.isShowing() ? myUnderPopup : myAbovePopup;
if (over != null && popup.isShowing()) {
final Rectangle rec = new Rectangle(popup.getLocationOnScreen(), popup.getSize());
int delta = 15;
rec.x -= delta;
rec.width += delta * 2;
rec.y -= delta;
rec.height += delta * 2;
final Point eventPoint = e.getPoint();
SwingUtilities.convertPointToScreen(eventPoint, e.getComponent());
if (rec.contains(eventPoint)) {
return;
}
}
closePopup();
}
}
/** Tests if the popup is on the screen. */
public static void isPopupOnScreen(JPopupMenu popup, Rectangle checkBounds) {
Dimension dim = popup.getSize();
Point pt = new Point();
SwingUtilities.convertPointToScreen(pt, popup);
Rectangle bounds = new Rectangle(pt, dim);
if (!SwingUtilities.isRectangleContainingRectangle(checkBounds, bounds)) {
throw new RuntimeException("We do not match! " + checkBounds + " / " + bounds);
}
}