- (void)mouseDown:(NSEvent *)theEvent {
 NSPoint mousePoint = [theEvent locationInWindow];
 //NSPoint localPoint = [self convertPoint:mousePoint fromView:nil];
 CALayer *hitLayer = [[self layer]  hitTest:mousePoint];
 NSLog(@"MainView, hitLayer: %@", hitLayer.name);
 NSLog(@"mousePoint %f %f", mousePoint.x, mousePoint.y);
}