Hi when I create a root.geometry("300x300") and i measure the pixels it actually occupates on the screen is a 600x600 pixel square how can I fix this ?
#🔒 Tkinter 300x300 window is actually 600x600 on mac retina display
kind relic
austere ruinBOT
Hi when I create a root.geometry("300x300") and i measure the pixels it actually...
@kind relic
Python help channel opened
kind relic
What is your screen resolution?
4k
small flicker
Can you post the full code as text please?
kind relic
sure ^^
from tkinter import *
root = Tk() # create a root widget
root.title("Tk Example")
root.configure(background="yellow")
root.geometry("300x300") # width x height + x + y
root.mainloop()
It's nothing rn but this single pixel thing is turning me crazy xd
nimble tusk
maybe it's the width of one side and the other's mirrored ?
tbh i don't really know, i'm new to python
kind relic
wdym I don't quit get it ? ^^
nimble tusk
like, maybe the 300x300 width, that, is only the left side, and the other side's mirrored, like the radius of a circle instead of the diameter
kind relic
oh ok I see no its "width"x"height"
kind relic
I think it's a retina problem to counter the massive pixel density but I hate that they do it without asking
nimble tusk
I think it's a retina problem to counter the massive pixel density but I hate th...
retina problem ?
small flicker
you can make the window resizable using root.resizable(height = True, width = True) as a temporary solution for now
kind relic
Yeah ik but I want it fixed xd thats the problem
kind relic
retina problem ?
To much pixel density/resolution on a retina screen in 4k
late coyote
you could presumably just make it 150x150 if you only care about it being correct on your machine
small flicker
w = round(root.winfo_screenwidth() / 12.8)
h = round(root.winfo_screenheight() / 7.2)
root.geometry(f"{w}x{h}")
``` @kind relicyeah but on other machine it wouldnt work its horrible Ill end up coding a gui in c++ for a dumb project xd
sorry I wont be able to answer now I need to go to sleep its 5am here ^^
late coyote
yeah but on other machine it wouldnt work its horrible Ill end up coding a gui i...
you can just check whether the current machine has 4k display and choose the constant based on that
but yeah if you already know cpp then that's probably fine
late coyote
```py
w = round(root.winfo_screenwidth() / 12.8)
h = round(root.winfo_screenheig...
on the 4k machine, this will still give you 300x300 (i.e. the wrong dimensions), no? and then on other machines it'll give the wrong number. on my machine it's 118x136
small flicker
they want 300x300, and keep getting 600x600
late coyote
sure, but i mean to say the string being generated is 300x300, which is what they already have
small flicker
ah true
late coyote
which tkinter doesn't seem to be respecting
and then on machines that aren't 4k, the dimensions will be wonky because you're hardcoding the divisor
small flicker
root.call('tk', 'scaling', 2.0)
late coyote
i tried that on my machine, and it didn't seem to actually change the dimensions of the window
small flicker
i'm not super knowledgable about tkinter, just googling things
trying to be helpful while i wait for my quesiton to be answered
cedar tinsel
Hi when I create a root.geometry("300x300") and i measure the pixels it actually...
asweigart/pyautogui#33
https://stackoverflow.com/q/58349657
supposedly it is an issue specific to retina displays where apps aren't informed of the real screen resolution, so i guess you have to check for it yourself?
blazing leafBOT
cedar tinsel
based on their responses, a workaround might look something like: ```py
import subprocess
import sys
IS_RETINA = (
sys.platform == "darwin"
and subprocess.call("system_profiler SPDisplaysDataType | grep -i 'retina'", shell=True) == 0
)
if IS_RETINA:
root.geometry("150x150")
else:
root.geometry("300x300")looks hacky to me though, but i guess it's about the same as what i normally do to fix DPI scaling on windows:py
if sys.platform == "win32":
from ctypes import windll
windll.shcore.SetProcessDpiAwareness(2)```
frosty bay
I think the OP needs to answer:
- what Just_Iced's query about
root.winfo_screenwidthetc returns - how they're measuring their 600x600 number? eg reported by querying the widget size, physicially measuring on the screen with a rule or some mark-out-rectangle tool ?
- what the Mac's Display information says about the screen
- what MacOS they're running, might matter
Macs with retina displays run a scaled display system by default, with some subpixel dithering stuff to make it possible to present very nice curve edges. Being a nerd, I run in native resoultion via a third party app because I just want max pixels. We need to know, ideally, the physical and logical pixel sizes of their display.
austere ruinBOT
Python help channel closed