Re: GTK 3 support status

[John Lindgren <john lindgren aol com>]

Hi Tristan,

This makes a bit more sense now.

On 12/05/2011 09:27 AM, Tristan Van Berkom wrote:
> On Mon, Dec 5, 2011 at 11:18 PM, John Lindgren<john lindgren aol com>  wrote:
> > It looks to me as though there are 3 separate problems contributing here:
> >
> > 1. GtkLabel does not take into account gtk_widget_set_size_request() when
> > reporting its "natural" size:
> > https://bugzilla.gnome.org/show_bug.cgi?id=662043
> Not a bug.
>
> No widgets should ever peek at the explicit user set size request to
> implement the size negotiation vfuncs.
>
> Those are handled in GtkWidgetClass.adjust_size_request() base class
> implementation.

So using gtk_widget_set_size_request() as a way to set the width of a 
label is no longer valid in GTK+ 3.  Fair enough.

> > 2. Nor does it take into account gtk_label_set_width_chars():
> > https://bugzilla.gnome.org/show_bug.cgi?id=665560
> It does, width-chars, as always, only effects the minimum size, not
> the natural size.

I get it now.  You set the minimum width of a label with 
gtk_label_set_width_chars() and the natural/default width with 
gtk_label_set_max_width_chars().

The documentation is very misleading; actually, the entire documentation 
for gtk_label_set_width_chars() consists of the sentence fragment, "Sets 
the desired width in characters of label to n_chars."  I do not think 
that most people would make the connection between "desired width" and 
"minimum width".

Likewise, the documentation for gtk_label_set_max_width_chars() is, 
"Sets the desired maximum width in characters of label to n_chars."  I 
do not think that most people would make the connection between "desired 
maximum width" and "natural/default width".

> > 3. GtkWindow ignores gtk_window_set_default_size() and instead goes to its
> > "natural" size if the window is not resizable:
> > https://bugzilla.gnome.org/show_bug.cgi?id=665596
> As I mentioned in the previous mail, I believe this has *always* been the case,
> GtkWindow always shrinks down to minimum size (or now in GTK+3 'natural size')
>
> This is how you get the shrinking dialogs when closing the expander in them
> (for non-resizable windows).
>
> However, it could be considered a bug, one would expect GtkWindow to make
> an attempt to honor a user set default size for a non-resizable window.
>
> Perhaps it's even a regression from GTK+2, not so sure.

I think it should be considered a bug; however, I do not care so much 
about gtk_window_set_default_size() now that I can set the size of the 
label directly.  Using gtk_window_set_default_size(), you might recall, 
was your suggestion from an earlier mail:
> So I'm attaching my version of your test case, actually except for
> the label being somehow severely broken here, your code works
> nicely... I added a line that says gtk_window_set_default_size()
> and I think that will fix all your problems.

Thanks for your help.  I will close #662043 and #665560 but add a 
comment that the documentation is wrong and needs to be updated.

-- John