In my previous question "Diagram which matches current window size or in ScrollPane?" the help given allowed me to change the size of the diagram to match the current window size really well.

However, if someone makes the window large and creates a diagram which fills it, then makes the window smaller, the diagram also becomes smaller so some items are 'off' the diagram.

What I need to be able to do instead is keep the diagram large enough to display all items, and instead add scroll bars as the window becomes smaller.

I assume that to do this I need to check the positions of all items on the diagram when I 're-size' it? Or is there a better way?

Any advice on the best way of doing this would be very welcome.

Yes I had kept the Math.max() calls.

Using getContentBounds() instead of getBounds() worked just as I needed.

Thanks again for you help.