This was exactly what I searched for! Thank you very much!
Best,
Joern
On Friday 25 April 2008 11:11:03 Max E. Kuznecov wrote:
> 2008/4/25, Joern Koerner <[EMAIL PROTECTED]>:
> > Hi!
> >
> > I've a small problem with Overlay.
> > I want to create a "caption" for a LineBox that contains a listbox with
> > an overlay. Just a small simple text that sits around the top left
> > corner and does nothing.
>
> For my project I've created a separate widget - linebox with title,
> based on LineBox:
>
> class Border(urwid.WidgetWrap):
> def __init__(self, widget, title=None, attr=None):
> """
> Draw a line border around widget and set up a title
> @param widget: Widget to wrap
> @param title: (title, attribute) tuple or basestring
> @type title: urwid.Text object
> @param attr: Attribute of border
> """
>
> utf8decode = urwid.escape.utf8decode
>
> _title = None
>
> if title is not None:
> if isinstance(title, tuple):
> _len = len(title[0])
> _title = urwid.Text((title[1], " %s " % title[0]),
> "center") elif isinstance(title, basestring):
> _len = len(title)
> _title = urwid.Text(title, "center")
> else:
> raise UIError("Invalid title type %s. "\
> "Tuple or basetring expected" % type(_title))
>
> _len += 2 # " _text "
>
> self.attr = attr
>
> self.tline = self._attr(urwid.Divider(utf8decode("─")))
> self.bline = self._attr(urwid.Divider(utf8decode("─")))
> self.lline = self._attr(urwid.SolidFill(utf8decode("│")))
> self.rline = self._attr(urwid.SolidFill(utf8decode("│")))
>
> self.tlcorner = self._attr(urwid.Text(utf8decode("┌")))
> self.trcorner = self._attr(urwid.Text(utf8decode("┐")))
> self.blcorner = self._attr(urwid.Text(utf8decode("└")))
> self.brcorner = self._attr(urwid.Text(utf8decode("┘")))
>
> tline_widgets = [('fixed', 1, self.tlcorner), self.tline]
>
> if title is not None:
> tline_widgets.append(("fixed", _len, _title))
>
> tline_widgets.extend([self.tline, ("fixed", 1, self.trcorner)])
>
> self.top = urwid.Columns(tline_widgets)
> self.middle = urwid.Columns([('fixed', 1, self.lline),
> widget, ('fixed', 1, self.rline)],
> box_columns=[0,2], focus_column=1)
>
> self.bottom = urwid.Columns([('fixed', 1, self.blcorner),
> self.bline, ('fixed', 1,
> self.brcorner)])
>
> self.pile = urwid.Pile([('flow',self.top), self.middle,
> ('flow', self.bottom)], focus_item=1)
>
> super(Border, self).__init__(self.pile)
>
> #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> def _attr(self, widget):
> if self.attr is None:
> return widget
>
> return urwid.AttrWrap(widget, self.attr)
>
> May be it would be useful.
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