[haiku-development] Re: BBox and layout

On Wed, 09 May 2012 02:08:00 +1200, Alex Wilson <yourpalal2@xxxxxxxxx> wrote: 


So again, I would change the default BBox semantic of SetLayout to add
a special BBoxLayout that has exactly one child which is the added
layout. This layout is placed exactly in the inner BBox frame. Guess in
99% thats what you want.

That's almost what I want, but I think playing with SetLayout like
that would be wrong. BView::SetLayout() should basically do the same
thing as BBox::SetLayout(). It's better, in my opinion, to default to
using a BBoxLayout when the view is built with the layout
constructors, or with the B_SUPPORTS_LAYOUT flag, and let the user
replace it if they want.
qt also gives a solution for this problem :-) They have a setContentsMargins in QWidget and QLayout and they using this setContentsMargins in BGroupBox to place the layout in the content area. So as you proposed earlier a SetInset in BLayout and consequently a SetInset in BView would do the trick :-) 

Cheers,
        Clemens

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