According to tkinter my screen has (1536x864)px while according to PIL my screen has (1920x1080)px, what is going on here and is there a way to solve this?
So I was writing a little program that makes a transparent tkinter window that i can move arround. When I press a button, the program uses the winfo.rootx, winfo_rooty, width and height to calculate where the four edges of the frame are. These are then passed to PIL ImageGrab.grab for it to screenshot the window.
def capture(self,event=None):
self.update()
x0 = self.winfo_rootx() #left wall
y0 = self.winfo_rooty() #top wall
x1 = x0 + self.width #right wall
y1 = y0 + self.height #bottom wall
img = ImageGrab.grab(bbox=(x0,y0,x1,y1))
When I had the tkinter window in the top left, the plot was perfect, however when I moved the window over towards the bottom right, it captured a rectangle, different from my tkinter frame.
It must be about 2hours later that I noticed what was wrong: according to tkinter my screen has (1536x864)px while according to PIL my screen has (1920x1080)px. What is going on here?
Correct image top left: Red is the frame that is capturing, blue is the captured frame.
Wrong image bottom right: Red is the frame that is capturing, blue is the captured frame:
I managed to fix this by adding a factor 1920/1536=1.25 so that the output of tkinter gets upscaled to use as input to PIL.