Python-Tkinter修复对象位置

Question

Im currently testing around with python GUI and have made a script that takes 2 entered numbers from 2 textfields and upon a button press generates a block of labels (eg i enter 4 and 5 so it generates a 4x5 field of labels)

but now i want to do this: when i generate objects, i want to prevent them to - move - overlap my current objects (buttons, textfields). i can kind-of figure something for the overlapping, but every time i generate new stuff, everything moves around. Can i set a specific field in the grid to be "reserved" so that new stuff never goes in there?

this is my current attempt - as you can see, its not overlapping anymore, but if the snowflakes are generated, the textboxes and buttons still "jump" apart for a small distance

EDIT: the "jumps" are due to the font size of the added snowflakes - that still leaves my question on how i prevent this, as i dont want to be limited to small font sizes

from tkinter import *
wide = 0
deep = 0
entrytext = "test"
window = Tk()
window.title("test")
window.geometry('1000x1000')


ent = Entry(window)
ent.grid(column=0, row=1)

def GetClicked():
    global wide
    wide = ent.get()
    wide = int(wide)

btn2 = Button(window, text="Width", command=GetClicked)
btn2.grid(column=0, row=2)

ent2 = Entry(window)
ent2.grid(column=0, row=3)

def GetClicked2():
    global deep
    deep = ent2.get()
    deep = int(deep)

btn = Button(window, text="Depth", command=GetClicked2)
btn.grid(column=0, row=4)

def WingBut(column,row):
    lbl = Label(window, text="T", font=("Wingdings", 15))
    lbl.grid(column=column, row=row)
def clicked(wide,deep):
    h = 0
    j = 0
    while h in range (deep):
        i = 0
        h += 1
        while i in range(wide):
             if i > 2 or j > 5:
                 WingBut(i,j)
             i += 1
             if i == wide:
                 j += 1


btn = Button(window, text="Buttonspam",font=("Arial", 10),command=lambda: clicked(wide,deep))
btn.grid(column=0, row=0)






window.mainloop()

Answer 1

the textboxes and buttons still "jump" apart for a small distance

This is due to the resulting size of the dynamically added labels (those labelled "T") being taller than the current row height for each row. Because the row size must increase to accommodate the new label, the other widgets in the same row are also resized so that the overall height for the row is consistent. That resize is causing the jumping effect.

One way to correct it would be to reduce the font size of the "T" labels. Try setting it to 10 and the problem should go away.

Another way to solve it would be to set the minsize for each row to be the height of the tallest widget in the row, eg the "T" label widget height.

for row in range(5):
    window.rowconfigure(row, minsize=36)

You can add the above code before you call window.mainloop() .

I selected 36 because this makes the rows a minimum of 36 pixels high, and this is sufficient on my system to display the "T" without causing the row to resize.

If you don't want to hardcode the minsize you could calculate it dynamically.

dummy = Label(window, text="T", font=("Wingdings", 20))
dummy.grid(row=0, column=0)
dummy.update_idletasks()        # seems to be required to get rendered size
height = dummy.winfo_height()
dummy.grid_forget()             # we don't want users seeing this widget

for row in range(5):
    window.rowconfigure(row, minsize=height)

That's one way to do it. Possibly there is a better, more direct, way using the font itself, but you can research that if you're interested.