Change Text Widget font in Python

Question

I'm making a function that will increase the text widget's size by 1 every time it's called. I cannot find a way to find the current font size of the widget. I need something like:

textEntry.configure(font=(fontSize=fontSize+1))

@BryanOakley this is far neater than my answer - outstanding work, as always. — asongtoruin, Mar 14 '17 at 11:51

score 0 · Answer 1 · answered Mar 14 '17 at 10:56

If you call .config() on a widget without any parameters, it returns a dictionary containing the current configuration. So, textEntry.config() would get you a dictionary for the textEntry widget, and textEntry.config()['font'] would get you a tuple of values relating to your font settings. Assuming your font settings consist only of a size parameter (e.g. font=10)

curSize = int(textEntry.config()['font'][-1])

would get you an integer containing the current font size

My font consists of a family and a size. – harrison baillie Mar 15 '17 at 09:41 — harrison baillie, Mar 15 '17 at 09:41

score -1 · Accepted Answer · answered Mar 17 '17 at 06:51

-1

This is a quick and dirty solution but it works for all fonts and can contain any valid font parameter(s).

def increaseSize():
    font = textEntry.cget('font')       #get font information
    info = font.split(' ')              #split it into chunks

    #find the font size entry
    for i in info:
        if i.isdigit():
            size = int(i)
            textEntry.config(font=font.replace(i, str(size + 1)))
            break

answered Mar 17 '17 at 06:51

Alex Boxall

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Thanks so much! This works perfectly for what I'm doing. – harrison baillie Mar 20 '17 at 12:17
This will only work if you define the font as a tuple. That's not the only way to define fonts. – Bryan Oakley Sep 27 '21 at 13:14

Change Text Widget font in Python

2 Answers2