On Wed, Sep 17, 2008 at 5:02 PM, James <[EMAIL PROTECTED]> wrote:
> Kent / Alan,
>
> Thanks for the responses. I'm not completely certain that urwid is
> appropriate for the program I'm writing, as it seems to be more of a
> framework for developing a text GUI application. (similar to curses?)
It takes less code to do what you want in urwid. You don't have to
create menus. Here is an example that is I think close to what you
want. It displays a header line, a scrolling log and a fixed status
line. I have never used urwid before and I whipped this up in about
1/2 hour so don't take it as gospel. It seems well-behaved, even
handles resizing the terminal window.
Kent
# Use urwid to display a scrolling log and a fixed status line
import time
import urwid.curses_display
import urwid
class ScrollingStatus(object):
def __init__(self):
# This contains the log items
self.items = urwid.SimpleListWalker([])
self.listbox = urwid.ListBox(self.items)
# A header line so we know how to quit...
instruct = urwid.Text("Press Esc to exit.")
header = urwid.AttrWrap( instruct, 'header' )
# The status line
self.status_line = urwid.Text('Count = 0')
# Wrap it all up in a Frame
self.top = urwid.Frame(self.listbox, header,
urwid.AttrWrap(self.status_line, 'status'))
# This is our 'status' data
self.count = 0
def main(self):
self.ui = urwid.curses_display.Screen()
self.ui.register_palette([
('header', 'black', 'dark cyan', 'standout'),
('status', 'black', 'light gray', 'standout'),
])
self.ui.run_wrapper( self.run )
def run(self):
size = self.ui.get_cols_rows()
while True:
self.draw_screen( size )
keys = self.ui.get_input()
if "esc" in keys:
break
if "window resize" in keys:
size = self.ui.get_cols_rows()
# Add a log item
self.items.append(urwid.Text('The time is %s' % time.asctime()))
self.items.set_focus(self.items.get_focus()[1] + 1)
# Update the status line
self.count += 1
self.status_line.set_text('Count = %s' % self.count)
time.sleep(1)
def draw_screen(self, size):
canvas = self.top.render( size, focus=True )
self.ui.draw_screen( size, canvas )
ScrollingStatus().main()
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