🚀 go-pugleaf

In article <9208032258.AA29461@horse.ee.lbl.gov>, mccanne@HORSE.EE.LBL.GOV (Steven McCanne) writes:
|> I wrote that I thought there was a bug with alignment in vboxes.  The problem
|> was that the following code fragment didn't seem to work right:
|> 
|> 	layout.hbox(layout.vglue(5 * 70),
|>                     layout.vbox(layout.vglue(),
|>                                 new Circle(100, kit.foreground(), 
|>                                            new Brush(1.0)),
|>                                 layout.vglue()));
|> 
|> After tracing through various execution paths and staring at the code for
|> a few more hours, I saw that if the alignment of the first vglue object
|> was set to 1.0, then things would work.  E.g., the following code "solves"
|> the problem outlined in my previous message:
|> 
|> 	layout.hbox(layout.vglue(5 * 70, fil, 0, 1.0),
|>                     layout.vbox(layout.vglue(),
|>                                 new Circle(100, kit.foreground(), 
|>                                            new Brush(1.0)),
|>                                 layout.vglue()));
|> 
|> Is my fix just a bug workaround, or is this really what you have to do to make
|> it work?  If the latter is true, I'm confused.

The current behavior is as intended.  An hbox will align its components
in the vertical dimension; thus the origin of the vglue is aligned to
the origin of the vbox.  A vbox is "top-aligned"; it has an alignment of 1.0.
Perhaps vglue should also be top-aligned by default.