[Urwid] BigText Widget Styling- (maxcol, ) = size ValueError: too many values to unpack

d hee coolio at ymail.com
Tue Nov 19 22:51:25 EST 2013


Hi, I've been studying the big text example script. The BigText widget was placed in a pile widget and then recursively placed in a list which would be used by a walker. Can the BigText widget be used as a stand alone without being nested in a Pile widget -> list widget? If yes, can an example please be given?

Thank you,
-Darin



On Tuesday, November 19, 2013 7:09 AM, d hee <coolio at ymail.com> wrote:
 
Hi,
For experimenting I am trying to make a simple screen with a Title using BigText. But I am getting a render error that I can not figure out in Canvas. Here is my code:
class Graphics():
    palette = [
        ('body',         'black',      'light gray', 'standout'),
        ('header',       'white',      'dark red',   'bold'),
        ('button normal','light gray', 'dark blue', 'standout'),
        ('button select','white',      'dark green'),
        ('button disabled','dark gray','dark blue'),
        ('edit',         'light gray', 'dark blue'),
        ('title',      'white',      'black'),
        ('bigtext',      'white',      'black'),
        ('chars',        'light gray', 'black'),
        ('exit',         'white',      'dark cyan'),
        ('bg background','light gray', 'black'),
        ('bg 1',         'black',      'dark blue', 'standout'),
        ('bg 1 smooth',  'dark blue',  'black'),
        ('bg 2',         'black',      'dark cyan', 'standout'),
        ('bg 2 smooth',  'dark cyan',  'black'),
        ]  

    def setup(self):
        self.bigtext = urwid.BigText("sssss", None)

        bt = urwid.Padding(self.bigtext, 'left', None)
        bt = urwid.AttrWrap(bt, 'bigtext')
        bt = urwid.Filler(bt, 'bottom', None, 7) 
        bt = urwid.BoxAdapter(bt, 7) 
        hdr = None
        bt  = urwid.Frame(header=hdr, body=bt)
        return bt 

    def main(self):
        self.view = self.setup()
        self.loop = urwid.MainLoop(self.view, self.palette)
        self.loop.run()

    def main():
        Graphics().main()



one at development ~/development/krunch_uploader $ python ../../try/foo.py 

Traceback (most recent call last):
  File "../../try/foo.py", line 77, in <module>
    main()
  File "../../try/foo.py", line 74, in main
    Graphics().main()
  File "../../try/foo.py", line 70, in main
    self.loop.run()
  File "/usr/lib64/python2.7/site-packages/urwid/main_loop.py", line 272, in run
    self.screen.run_wrapper(self._run)
  File "/usr/lib64/python2.7/site-packages/urwid/raw_display.py", line 242, in run_wrapper
    return fn()
  File "/usr/lib64/python2.7/site-packages/urwid/main_loop.py", line 312, in _run
    self.draw_screen()
  File "/usr/lib64/python2.7/site-packages/urwid/main_loop.py", line 563, in draw_screen
    canvas = self._topmost_widget.render(self.screen_size, focus=True)
  File "/usr/lib64/python2.7/site-packages/urwid/widget.py", line 141, in cached_render
    canv = fn(self, size, focus=focus)
  File "/usr/lib64/python2.7/site-packages/urwid/container.py", line 1058, in render
    focus and self.focus_part == 'body')
  File "/usr/lib64/python2.7/site-packages/urwid/widget.py", line 141, in cached_render
    canv = fn(self, size, focus=focus)
  File "/usr/lib64/python2.7/site-packages/urwid/decoration.py", line 402, in render
    (maxcol,) = size
ValueError: too many values to unpack
one at development ~/development/krunch_uploader $ 

If anyone can help, please I would greatly appreciate it. 
Also, I noticed the mailing lists are not emaling to my email(also checked my spam box)...but I am able to check these at http://lists.excess.org/pipermail/urwid/. Not sure if it should be sending the replies to my email. 

Thanks,
-Darin
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