Re: Cell size

[Yann Leydier <yann leydier info>]

Mmmmmm… perhaps doing the exact opposite of my example : setting the 
size of the treeview depending on the size of the scrolledwindow ? Or 
simply setting the width of the treeview to 1/n * window width ? It 
might be dirty but I have no other idea at the moment…

yann

On 23/03/2011 10:42, Glus Xof wrote:
> Not exactly what I need... (but thanks...)
>
> Imagine a string _s of size 150, but a cell size 70... what happens ??
>
> If horitzontal scroll bar is set by policy, here appears... if not,
> the text also *continues* back, "behind" the scrolled window. I don't
> want neither this horitzontal bar nor text hide back. I search a
> solution for cut lines and force, at a same cell, a multi-line view.
> In my example, _s should appear in along 3 lines (sized 70, 70 and
> 10...)
>
> Mr Cumming pointed me the "Gtk::CellRenderer::property_wrap_method()"
> for breaking/wrapping lines but seems working only if a
> "Gtk::CellRenderer::property_width()" is properly set...
>
> In this case, it's difficult for me, to set the value of this
> "Gtk::CellRenderer::property_width()" because it depends of the window
> size, and I cannot guess it before. Moreover, it seems that the cells
> column size changes according the text size, in order to fit all text
> in one line.
>
> Maybe, the method given by Mr Yann could help me to find the desired
> size of the column each time that either the main window or the
> scrolled window resizes...
>
> What I need is like a VerticalScrolledWindow object...
>
> Glus
>
>
>
> 2011/3/23 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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> >
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