[tkinter] widget size adjustment
auriocus at gmx.de
Wed Jun 22 17:47:30 EDT 2016
Am 22.06.16 um 23:18 schrieb Zachary Ware:
> On Wed, Jun 22, 2016 at 4:05 PM, Christian Gollwitzer <auriocus at gmx.de> wrote:
>> BTW, the Tkinter wrapper is a bit clumsy for this option. In the original
>> Tk, the sticky option is just a string. You can still pass that and do
>> instead of the clumsy
> There are constants in tkinter for this: NSEW, NS, NE, NW, SE, SW, and EW.
Yes, but this means that not only the combinations with three are
missing (NEW = stretch left-right and align at the top etc.), but also
you need to remember the exact order that the author of Tkinter has set.
I'm still thinking that passing a string is more in the spirit of Tk; do
sticky='snew' or sticky='news' if you wish, which actually works. Plus
you save the module prefix (unless you do "from tkinter import *"). I'm
not getting the rationale behind these constants. Why should I do
side=Tk.LEFT instead of side='left' ?
There are more points where Tkinter feels clunky compared to Tk in Tcl.
For instance, gridding widgets with row and columnspan options can be
done in Tcl in ASCII-art using -, x and ^ to indicate extensions:
grid .a -
grid .b .c
grid ^ x
This defines a 3x2 grid where .a extends to the right (columnspan=2), .b
extends downwards (rowspan =2), and the bottom right place is empty. The
same thing in Python requires to do explicit row/column-counting
a.grid(row=0, column=0, columnspan=2)
b.grid(row=1, column=0, rowspan=2)
This gets increasingly uglier with the number of widgets in a frame.
If grid were a standalone function, as it is in Tk, it would not be
difficult to provide something similar to the Tcl code. For whatever
reason it was decided that it should be a method of the widgets to be
placed and thus accepts only a single widget.
More information about the Python-list