On Sun, Dec 14, 2008 at 09:37:32PM +0100, [email protected] wrote:
> Shoes.app do
> stack :width => 100 do |s|
> para s.width
> end
> end
>
> But the stack doesn't yield itself inside the block (which I thought would
> be logical :))
Most stacks don't know their own width until they get laid out for
the first time. During creating, the object is really only useful
for adding elements -- it doesn't have dimension.
I mean imagine this:
stack do |s|
para :width => s.width
end
The width of the stack is based on the width of the para which is
based on the width of... the stack!
So, the way we do it is:
stack :width => 100 do
para :width => 1.0 # ... or "100%"
end
You can also use local variables to compute the widths. Or you can
hook the `start` event, which will be run after the elements are
laid out for the first time (similar to window.onload.)
_why
