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Re: gtk4: gtk_box_pack_start()/end() porting




On 03.05, Murray Cumming wrote:
> On Wed, 2017-05-03 at 14:22 +0200, Timm Bäder wrote:
> > > Have some container widgets changed, or lost, some default
> > > spacing/padding/margins too? For instance, it looks like
> > > GtkActionBar
> > > used to have some hard-coded spacing between its child widgets
> > > (added
> > > via gtk_action_bar_pack_start()), but not with gtk4.
> > 
> > Yes, iirc GtkPopover with .menu and GtkFileChooserButton, etc. lost
> > their
> > spacing. Since GtkBox supports border-spacing via CSS now, I think
> > themes should handle that instead, but Adwaita doesn't care yet.
> 
> So, applications shouldn't generally need to specify any spacing at all
> between child widgets in containers? For instance
> - Gtk::Box::spacing
> - margin of child widgets in a Gtk::ActionBar
> - Gtk::Grid column-spacing and row-spacing
> ?

No, I'm talking about individual widgets, not applications and their
UI[1]. The default values of the properties are gone in GTK+, but not
the properties itself. GtkActionBar lost its spacing property I think,
but that's just because I didn't know if there's a real use case for it,
it seems like something the theme should control in this case.
Right now we still have all the spacing properties in GtBox,
GtkGrid, etc. as you mentioned and of course the widget margin
properties you can use and they still work like they did in gtk3.


[1]Even though spacing *should* probably be handled by the theme, so the
theme can decide whether UIs are more spacey or more narrow, nobody has
come up with a proper way for applications to specify that.
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