Tkinter On Canvas Resize Scroll Bar Does Not Adjust
Although I believe my problem is simple, I just can't find an answer nor figure out how to fix this. Basically, I have a canvas that once a button is pressed it gets resized (like
Solution 1:
It took me a while without a Minimal, Complete, and Verifiable Example but I got something running that I think does what you had in mind. I took the liberty of adding something to look at when we zoomed. Check it out:
from tkinter import *
classzoomer(Tk):
def__init__(self):
x=100
y=100
Tk.__init__(self)
self.border = 10
self.size_x = x
self.size_y = y
#SIZE
self.app_sizex = 200
self.app_sizey = 200
fontSize=int(x/20)
self.title("Graphic")
self.geometry(str(self.app_sizex+10) + "x" + str(self.app_sizey+40))
#CANVAS + BORDER
self.canvas = Canvas(self, width = self.app_sizex, height = self.app_sizey, scrollregion=(0,0,x,y))
self.canvas.grid(row=0, column=0, sticky="nsew")
self.canvas.create_line(self.border, self.border, self.border, y-self.border)
self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border)
self.canvas.create_line(self.border, self.border, x-self.border, self.border)
self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border)
self.canvas.create_line(self.border, self.border, x-self.border, y-self.border)
text1=self.canvas.create_text(50, 50, fill="white",font=("Purisa", fontSize))
self.canvas.itemconfig(text1, text="Graphic Text")
#SCROLLING BARS
self.vbar=Scrollbar(self,orient=VERTICAL)
self.vbar.grid(row=0, column=1, sticky="ns")
self.vbar.config(command=self.canvas.yview)
self.hbar=Scrollbar(self,orient=HORIZONTAL)
self.hbar.grid(row=2, column=0, sticky="ew")
self.hbar.config(command=self.canvas.xview)
self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set)
#zoom button
save_button = Button(self, text = "Zoom")
save_button["command"] = lambda: self.zoom_in()
save_button.grid(row=3, column = 0, pady = 5)
defzoom_in(self):
#Clean canvas
self.canvas.delete("all")
self.size_x = int(self.size_x * 1.1)
self.size_y = int(self.size_y * 1.1)
x=self.size_x
y=self.size_y
fontSize=int(x/20)
self.canvas.create_line(self.border, self.border, self.border, y-self.border)
self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border)
self.canvas.create_line(self.border, self.border, x-self.border, self.border)
self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border)
self.canvas.create_line(self.border, self.border, x-self.border, y-self.border)
text1=self.canvas.create_text(self.size_x/2, self.size_y/2, fill="white",font=("Purisa", fontSize) )
self.canvas.itemconfig(text1, text="Graphic Text")
self.canvas.configure(scrollregion=self.canvas.bbox("all"))
#SCROLLING BARS
self.vbar.config(command=self.canvas.yview)
self.hbar.config(command=self.canvas.xview)
self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set)
if __name__ == '__main__':
my_gui=zoomer()
my_gui.mainloop()
I will leave what you were missing as an exercise. (That means I got it running but am too lazy to go back and figure out exactly what went wrong.)
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