[Fxruby-users] Seeing which scrollbars are displayed

[Daniel S. <da...@pr...>]

I've been basing the width of one of my elements on the width of the
visible content within a scrollbar.

Ie.
=20    aaaaaaaaaaaaab

=20    sssssssssssss^
=20    sssssssssssss|
=20    sssssssssssss|
=20    sssssssssssss|
=20    <----------->

Where aaaaa is the element that is being resized and b is the space to
account for the scrollbar.

However, there doesn't appear to be any easy way to tell if either of
the scrollbars is displayed or not.

I've cooked up the following methods:

=20 def vscroll?
=20   not @scroll.horizontalScrollbar.width =3D @scroll.width and
=20     (@scroll.verticalScrollbar.height =3D @scroll.height or
=20       (@scroll.horizontalScrollbar.width =3D @scroll.width +
@scroll.verticalScrollbar.width and
=20         @scroll.verticalScrollbar.height =3D @scroll.height +
@scroll.horizontalScrollbar.height)
=20     )
=20 end
=20 def hscroll?
=20   not @scroll.verticalScrollbar.height =3D @scroll.height and
=20     (@scroll.horizontalScrollbar.width =3D @scroll.width or
=20       (@scroll.horizontalScrollbar.width =3D @scroll.width +
@scroll.verticalScrollbar.width and
=20         @scroll.verticalScrollbar.height =3D @scroll.height +
@scroll.horizontalScrollbar.height)
=20     )
=20 end

Which I know is probably missing an edge case somewhere.... I just have
the feeling that there's an easier way in here somewhere that I'm just
not finding.

A little help anybody?

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