Re: Giving GtkPane more than 2 children?

[Christian Hergert <christian hergert me>]

On 05/11/2018 01:57 PM, Paul Davis wrote:
> Does your new pane correctly restore the divider positions? The existing
> GtkPane fails to be able to restore the pane divider position precisely.
> The reasons why are fairly obvious once you dive into the code. I wrote
> a new (GTK+2) pane widget for Ardour, too.

The allocations are distributed in a series of stages that allow us to
prioritize what matters.


https://gitlab.gnome.org/GNOME/libdazzle/blob/master/src/widgets/dzl-multi-paned.c#L198

It only "pins" a value between two children when the user manually drags
a handle. Everything else is handled appropriately given the features we
have available to us in gtk3 (natural sizes, HfW/WfH, h/vexpand, etc).

I avoided using percentages between children because in practice it felt
jittery under resize. But since we use natural size + expand and what
not, the typical resize case is attractive.

If you need persistence of settings between runs, there are
child-properties for everything.

-- Christian