Re: Gtk tabs in emacs, new branch.

[David De La Harpe Golden]

Jan Djärv wrote:
> I just tested it, you can have zero sized widgets in the tab.  But there 
> are borders the Gtk+ widget expects to draw around its children.  This 
> now comes at the top, A minor issue.  I'll see if I can simplify my 
> implementation with this approach.
>
>     Jan D.

Should make interior tabs easier to implement too. hmm.

So, I was wondering just how firefox tabs did their thing given the 
quirks of a naive gtk notebook instance.  People here are quite likely 
already aware of this:

Mozilla XUL's "native gtk" theme engine doesn't really use the
notebook widget directly at all for its "tabbox" (or other gtk widgets 
directly for most anything else...)!

It apparently makes an examplar singleton instance of each widget then 
borrows their (GtkStyle) style  members to pass to 
gtk_(paint|draw|style)_* functions to handle drawing lookalikes more 
flexibly itself.

You can see the idea in the mozilla sources:
http://mxr.mozilla.org/seamonkey/source/widget/src/gtk2/gtk2drawing.c

http://www.gtk.org/api/2.6/gtk/GtkStyle.html

This apparently includes scrollbars - maybe a way around gtk's scrollbar
quirks...

Though recasting "gtk" emacs to use the approach throughout might be 
...a lot of work...