[Tkinter-discuss] Fwd: WxPython -> Tkinter

[Olrik Lenstra]

So that means that you will use a ttk frame instead of the Tkinter.Frame?
I'll see if I can get this working once I get home. (my program is on my
Desktop and I just do some testing on my laptop)

Thanks a lot so far!
Regards,
Olrik

2008/10/29 Guilherme Polo <ggpolo at gmail.com>

> On 10/29/08, Olrik Lenstra <o.lenstra at gmail.com> wrote:
> > I see, Thanks a lot, I really don't wish to bother you any further, but
> > here's my current situation.
> > I am still a beginning programmer and I am not entirely sure where to put
> > this code exactly.
> >
> > How would I go about using this code?
> >
>
> It should be very similar to what you are already doing in wx.
>
> But, you would need to layout your toplevel (the one that is created
> when you call Tkinter.Tk()) as this:
>
> There would be a ttk.Frame that would hold all the other widgets,
> which should be all ttk widgets according to this sample. Then you
> would call safe_yield(frame, True) in the same situations you would in
> wx. Now it remains to check if there is the same need for this in tk
> as there is in wx.
>
> Finally, a sample way to layout the widgets:
>
> root = Tkinter.Tk()
> frame = ttk.Frame(root)
> btn1 = ttk.Button(frame, text="Button 1")
> ...
> ... some time later:
> safe_yield(frame, True)
> ...
>
> > Thank you so much in advance.
> > Regards,
> > Olrik
> >
> >  2008/10/29 Guilherme Polo <ggpolo at gmail.com>
> >
> > >
> > >
> > >
> > > ---------- Forwarded message ----------
> > > From: Guilherme Polo <ggpolo at gmail.com>
> > > Date: Oct 29, 2008 9:16 AM
> > > Subject: Re: [Tkinter-discuss] WxPython -> Tkinter
> > > To: Olrik Lenstra <o.lenstra at gmail.com>
> > > Cc: python-list at python.org
> > >
> > >
> > > On 10/29/08, Olrik Lenstra <o.lenstra at gmail.com> wrote:
> > >  > Hello everyone,
> > >  >
> > >  > A while ago I joined the Tutor mailing list, and they helped me out
> > with a
> > >  > question regarding wxPython.
> > >  > Now however, I have tried a program in Tkinter and I would like to
> see
> > if
> > >  > there is a similar command to "wx.SafeYield(self, True)".
> > >
> > >
> > > It will be a combination of commands, not a single one. Initially I
> > >  considered this as "probably without solution", since tcl acquired a
> > >  yield command just in the 8.6a3 release, but then I looked at
> > >  wx.SafeYield code and apparently it is possible to replicate it.
> > >
> > >  Here is an initial cut, it is very possible to contain something not
> > >  equivalent to wx.SafeYield (besides it could be improved):
> > >
> > >
> > >  import ttk
> > >
> > >  inside_tkyield = False
> > >  disabled_wins = {}
> > >
> > >  def safe_yield(window, only_if_needed=False):
> > >    window_disabler(window)
> > >
> > >    try:
> > >        return tk_yield(window, only_if_needed)
> > >    finally:
> > >        for widget, flags in disabled_wins.iteritems():
> > >            ttk.Widget.state(widget, flags)
> > >        disabled_wins.clear()
> > >
> > >
> > >  def window_disabler(window):
> > >    widgets = window.children.values()
> > >    widgets.append(window)
> > >
> > >    for widget in widgets:
> > >        if widget.instate(['!disabled']):
> > >            prev_flags = widget.state(['disabled'])
> > >            disabled_wins[widget] = prev_flags
> > >
> > >
> > >  def tk_yield(window, only_if_needed=False):
> > >    # wx implements this differently based on the backend it is using
> > >    global inside_tkyield
> > >    if inside_tkyield:
> > >        if not only_if_needed:
> > >            raise RuntimeError("safe_yield called recursively")
> > >
> > >        return False
> > >
> > >    inside_tkyield = True;
> > >
> > >    window.update()
> > >    window.update_idletasks()
> > >
> > >    inside_tkyield = False;
> > >
> > >    return True
> > >
> > >
> > >  Note that this depends on ttk widgets
> > >  (http://pypi.python.org/pypi/pyttk) since it uses
> > widget.state to
> > >  disable and reenable the widgets. On windows the "wm" command supports
> > >  disabling the entire window, so it is easier if you can use it.
> > >
> > > [Forwarded because I sent to the wrong list first time]
> > >
> > >
> > >  >  Below is a copy of the message to the tutor list.
> > >  >
> > >  > > Dear Mailing list,
> > >  > >
> > >  > > a while ago a few of you helped me solve an issue I had with a GUI
> /
> > scan
> > >  > > program that I made.
> > >  > > The problem was that when I tried to move the frame it would hang
> > until
> > >  > the
> > >  > > scan was finished.
> > >  > > To solve this I had to add "wx.SafeYield(self, True)" to the scan
> and
> > the
> > >  > > GUI wouldn't hang any more.
> > >  > > Now I have redone the program and have written it with Tkinter
> > instead of
> > >  > > WxPython.
> > >  > >
> > >  > > So is there a similar command for Tkinter as there is for
> WxPython?
> > >  > >
> > >  > > Thanks in advance.
> > >  > > Regards,
> > >  > > Olrik
> > >  > >
> > >  >
> > >
> > > > _______________________________________________
> > >  >  Tkinter-discuss mailing list
> > >  >  Tkinter-discuss at python.org
> > >  >
> > http://mail.python.org/mailman/listinfo/tkinter-discuss
> > >  >
> > >  >
> > >
> > >
> > >
> > >  --
> > >  -- Guilherme H. Polo Goncalves
> > >
> > >
> > > --
> > > -- Guilherme H. Polo Goncalves
> > >
> > >
> > >
> > > _______________________________________________
> > > Tkinter-discuss mailing list
> > > Tkinter-discuss at python.org
> > >
> > http://mail.python.org/mailman/listinfo/tkinter-discuss
> > >
> >
> >
>
>
> --
> -- Guilherme H. Polo Goncalves
>
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