Re: Cell size

[Yann Leydier <yann leydier info>]

Here is what I use to force a scrolled window to fit its content's width :

myclass::myclass
{
	…
	sw.set_policy(Gtk::POLICY_NEVER, Gtk::POLICY_ALWAYS);
	sw.add(widget);
	widget.signal_size_request().connect(sigc::mem_fun(this, 
&myclass::adjust_width));
	…
}

void myclass::adjust_width(Gtk::Requisition *req)
{
	sw.set_size_request(req->width + 20, -1); // TODO look for something 
more elegant than a plain "20" to take into account the vertical scroll bar
}

Depending on the widget inside your scrolled windows, you may need to 
deactivate and reactivate the signal at some point to avoid an unwanted 
recursion.

I hope this will help…
yann

On 23/03/2011 08:36, Glus Xof wrote:
> 2011/3/22 Glus Xof<gtglus gmail com>:
> > In my app, a Gtk::TreeView is included in a Gtk::ScrolledWindow...
> >
> > In a precedent message, I asked for the cell wrapping method... but
> > right now, I cannot see the method to set the "property_wrap_width()"
> > according the Gtk::ScrolledWindow width.
> >
> > (The concerned cells are the last column ones... so, resize when the
> > app main window resize too).
>
> I know that it's not always easy to explain the things...
>
> In my app, I have a
>
> 	Gtk::TreeView m_treeview
>
> with these columns,
>
> 	m_treeview.append_column (" Id. ", m_columns.v_tid);
> 	m_treeview.append_column_editable ("Sel.", m_columns.v_sel);
> 	m_treeview.append_column ("First", m_columns.v_fst);
> 	m_treeview.append_column ("Second", m_columns.v_sed);
> 	m_treeview.append_column ("Third", m_columns.v_thb);
> 	m_treeview.append_column ("Value", m_columns.v_val);
>
> The idea, like it's yet doing, is to limit the width of the first
> columns, but the last one should take all the space available. That
> I'm trying here, with these column cells, is to adjust the text along
> of the *visible* free space... and cut lines when longer.
>
> Maybe, because this TreeView is inserted in a Gtk::ScrolledWindow, to
> set this width becomes more difficult... and here a scroll bar
> appears, just that I'm trying to avoid. I'd like to see only the
> vertical one.
>
> Moreover, when the Main Window resize, the ScrolledWindow resize too,
> and the text should refit.
>
> Is there a way to manage it ?
>
> Glus
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