Calculate Scroll based on Childs relative position to ScrolledPanel

[seanbudd]

ScrolledPanels do not automatically scroll via tabbing if the focused control is not a direct child of the ScrolledPanel

Instead of using child.GetRect(), which calculates the position relative to the parent, calculate the position of the child relative to the ScrolledPanel itself.

[seanbudd]

didn't mean to close this

[codeofdusk]

CC @RobinD42.

[dpy013]

cc @@swt2c
Can you review the current pull request?

[swt2c]

cc @@swt2c Can you review the current pull request?

It seems OK to me, but is there a way to observe the problem in the existing code (e.g., in a demo or something)?

[seanbudd]

It seems OK to me, but is there a way to observe the problem in the existing code (e.g., in a demo or something)?

I'm not sure on the standard way to create a minimal sample for this repo.
This can easily be reproduced by creating a ScrolledPanel, then tabbing to a control which should cause the panel to scroll.