[pygtk] treeview column width depending on window size

[mailxbox2 at o2.pl]

> for a small filemanager I would like to set the width of the columns
> according to the window size. I have five columns, displaying an
> icon, the filename, size, mode and date. I want to set a fixed size
> for the icon and the last three columns; these columns should be
> visible in the set size at the right end of the treeview (obviously
> the icon a the left side); just like the midnight commander is doing
> it. The sizing should adjust as soon as I enlarge the window.
Maybe it's not exactly what you want, but I have nice working solution for 
this. Instead of setting fixed size for 1st, 3rd, 4th and 5th columns, you 
can just set their sizing mode to gtk.TREE_VIEW_COLUMN_AUTOSIZE. And to be 
sure that they don't take more space than needed, set expand to False. This 
way you don't have to compute columns' widths by yourself, and all column 
content - including column name in the header - is visible (not cropped). For 
the 2nd column to take up remaining space, you set its sizing mode to 
gtk.TREE_VIEW_COLUMN_FIXED and expand to True.
As an example below is code for setting up columns for three column treeview. 
First resizes itself to maximum (as your 2nd column is supposed to). Second 
and third just take as much space as necessary, and nothing more.

    nameColumn = gtk.TreeViewColumn(u'Name', gtk.CellRendererText(), text=0)
-> nameColumn.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
-> nameColumn.set_expand(True)
    nameColumn.set_sort_column_id(0)
    self._wnd.append_column(nameColumn)
        
    cell = gtk.CellRendererText()
    cell.set_property(u'xalign', 1.0)
    sizeColumn = gtk.TreeViewColumn(u'Size', cell, text=1)
-> sizeColumn.set_sizing(gtk.TREE_VIEW_COLUMN_AUTOSIZE)
-> sizeColumn.set_expand(False)
    sizeColumn.set_alignment(1.0)
    sizeColumn.set_sort_column_id(1)
    self._wnd.append_column(sizeColumn)
        
    cell = gtk.CellRendererText()
    cell.set_property(u'xalign', 1.0)
    copiedColumn = gtk.TreeViewColumn(u'Copied', cell, text=2)
-> copiedColumn.set_sizing(gtk.TREE_VIEW_COLUMN_AUTOSIZE)
-> copiedColumn.set_expand(False)
    copiedColumn.set_alignment(1.0)
    copiedColumn.set_sort_column_id(2)
    self._wnd.append_column(copiedColumn)

Hope it helps.
p_michalczyk