guilayout window and scrollview - titlebar size, padding etc

I've made a guilayout window with a scrollview containing a label which contains a big long string in it. What I'd like to do is size the window so that the clip area of the scrollview contains a specific number of lines of text based in the font size. something that would do the same as

Code (csharp):

1.  
2. scrollView.innerHeight = theFontSize * 8 ;
3.  

Of course it can't be done that way. I know I have to size the window to get the scrollview the right size. I figure I need to know

Window border size, window titlebar size, window bottom padding size, scrollview upper and lower padding size, label padding between lines.

Where would I find these things? I can't really see anything in the docs but they must be a fixed size someplace.

Thanks!

 

I had a look at gui.skin.xxx.margin for windows but it was all zeros in the rect. I experimented a bunch and I think I have it figured out.

Top and bottom border/padding etc is 40 and the line spacing in a label is 2.