如何使JDesktopPane中的JInternalFrame不重叠

Question

I have multiple JInternalFrame(s) inside a JDesktopPane. All the JInternalFrame(s) are undecorated and I manage the dragging using mouse listeners. However, I want the internal frames to be non overlapping, ie, one internal frame should not intersect with another.

Till now, I can check if two internal frames are overlapping by using getBounds().intersects() method. However, I am clueless as to what should I do next.

I tried Google but got no satisfactory answer. Please suggest a solution.

Thank you !

Answer 1

Two answers:

1. If you want to set which internal frame overlaps the other, use the setComponentZOrder(Component comp, int index) function.

eg

JDesktopPane desktopPane = new JDesktopPane();
contentPane.add(desktopPane);
JInternalFrame internalFrame = new JInternalFrame("New JInternalFrame");
desktopPane.add(internalFrame);
desktopPane.setComponentZOrder(internalFrame, 0);

Place the setComponentZOrder function in the JInternalFrame component listener.

    internalFrame.addComponentListener(new ComponentAdapter() {
        @Override
        public void componentMoved(ComponentEvent e) {
            desktopPane.setComponentZOrder(internalFrame, 0);
        }
    });

2. If you want them to strictly not overlap, place them in separate jframes.