private void mouseWheel(MouseWheelEvent event) {
if (diagramPane.getPopupMenu().isShowing() || ignoreMouseWheelEvent) return;
Timer stopIgnoringEventTimer =
new Timer() {
@Override
public void run() {
ignoreMouseWheelEvent = false;
}
};
ignoreMouseWheelEvent = true;
stopIgnoringEventTimer.schedule(250);
Point scrollPoint = new Point(event.getX(), event.getY());
if (event.getDeltaY() < 0) {
diagramPane.zoomIn(scrollPoint);
} else if (event.getDeltaY() > 0) {
diagramPane.zoomOut(scrollPoint);
}
diagramPane.update();
}
@Override
public HandlerRegistration addMouseWheelHandler(final MouseWheelHandler handler) {
return handlers.addHandler(MouseWheelEvent.getType(), handler);
}
public HandlerRegistration addMouseWheelHandler(MouseWheelHandler handler) {
return addDomHandler(handler, MouseWheelEvent.getType());
}