Re: problem with gtk_tree_view_set_fixed_height_mode()

[Stefan Kost <ensonic hora-obscura de>]

Hi Brian,

Brian J. Tarricone wrote:
> On 10/4/2005 5:07 AM, Stefan Kost wrote:
>
> > Brian J. Tarricone schrieb:
> >
> >
> > > Hi all,
> > >
> > > I'm trying to use GtkTreeView's fixed height mode for a playlist that
> > > can hold thousands of items, but I'm having a bit of trouble.  All I
> > > seem to get is:
> > >
> > > Gtk-CRITICAL **: gtk_tree_view_insert_column: assertion
> > > `gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_FIXED'
> > > failed
> > >
> > > I've tried gtk_cell_renderer_text_set_fixed_height_from_font() (I have
> > > three columns, all text renderers), but no help there; I still get the
> > > above critical message.
> >
> >
> >
> > This works for me:
> >
> > gtk_cell_renderer_text_set_fixed_height_from_font(GTK_CELL_RENDERER_TEXT(renderer),1);
> >  if((tree_col=gtk_tree_view_column_new_with_attributes(_("Pos."),renderer,
> >    "text",SEQUENCE_TABLE_POS,
> >    "foreground-set",SEQUENCE_TABLE_TICK_FG_SET,
> >    NULL))
> > ) {
> >  g_object_set(tree_col,
> >    "sizing",GTK_TREE_VIEW_COLUMN_FIXED,
> >    "fixed-width",40,
> >    NULL);
> >  col_index=
> >    gtk_tree_view_append_column(self->priv->sequence_table,tree_col);
> > }
> > else GST_WARNING("can't create treeview column");
> >
> >
> > I was initially using gtk_tree_view_insert_column_with_attributes() and
> > got lots of assertions too. In this case it seems to be required to
> > create the column, set the fixed-width and append (or insert) it.
>
>
> That sounds kinda icky.  Where are you getting the value of '40' for the
>  'fixed-width' parameter?  Just making it up?
Yeah, unfortuately. Thats why I was suspecting a bug there too. But when I 
brought up the issue I got no replies :(

http://mail.gnome.org/archives/gtk-app-devel-list/2005-February/msg00101.html

> Unfortunately, I *can't* use fixed-width columns, as the user needs to
> be free to resize the containing window (and the treeview should resize
> to match, with the middle column growing or shrinking as necessary).  I
> still don't understand why GtkTreeView requires a fixed *width* column
> in order to enable fixed *height* mode.

That was exactly what I was complaining about. Maybe we should file a bug.

http://bugzilla.gnome.org/buglist.cgi?short_desc_type=allwordssubstr&short_desc=fixed&product=gtk%2B&component=GtkTreeView&long_desc_type=allwordssubstr&long_desc=&status_whiteboard_type=allwordssubstr&status_whiteboard=&keywords_type=anywords&keywords=&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&emailtype1=substring&email1=&emailtype2=substring&email2=&bugidtype=include&bug_id=&changedin=&chfieldfrom=&chfieldto=Now&chfieldvalue=&cmdtype=doit&order=Reuse+same+sort+as+last+time&field0-0-0=noop&type0-0-0=noop&value0-0-0=
shown that nothing like that has been files before.

Stefan

>         -brian
>
>
>
> > Stefan
> >
> >
> >
> > > If I set the sizing of each column to GTK_TREE_VIEW_COLUMN_FIXED, I get
> > > 4500 blank rows, and only the middle column header is visible (probably
> > > because I set its 'expand' property to TRUE).  Not too useful.
> > >
> > > I'm not understanding why fixed height mode has anything to do with the
> > > sizing mode, since (according to the docs[1]), the sizing mode is only
> > > used to determine the _width_ of the cell, not the height.
> > >
> > > Can someone enlighten me here?
> > >
> > > Thanks,
> > > Brian
> > >
> > > [1] "The sizing method the column uses to determine its *width*. Please
> > > note that GTK_TREE_VIEW_COLUMN_AUTOSIZE are inefficient for large views,
> > > and can make columns appear choppy."  (emphasis mine)
> >
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