Zoom in & Out of text in tkinter Text

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x300")  
l1 = tk.Label(my_w,text='Your Name', width=10) #added one Label 
l1.grid(row=1,column=1) 
font1=['times',12,'normal']
t1 = tk.Text(my_w,width=10,height=1,font=font1) #text box
t1.grid(row=1,column=2,columnspan=2,pady=10) 
def my_fun(str1):
    if(str1=='plus'):
        font1[1]=font1[1]+2
    else:
        font1[1]=font1[1]-2
    t1.config(font=font1)

b1=tk.Button(my_w,text='+',command=lambda:my_fun('plus'))
b1.grid(row=2,column=2)
b2=tk.Button(my_w,text='-',command=lambda:my_fun('minus'))
b2.grid(row=2,column=3)

my_w.mainloop()

Using menubutton

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x300")  
l1 = tk.Label(my_w,text='Your Name', width=10) #added one Label 
l1.grid(row=1,column=1) 
font1=['times',12,'normal']
t1 = tk.Text(my_w,width=10,height=1,font=font1) #text box
t1.grid(row=1,column=2,columnspan=2,pady=10) 
def my_fun(str1):
    if(str1=='plus'):
        font1[1]=font1[1]+2
    else:
        font1[1]=font1[1]-2
    t1.config(font=font1)

mb=tk.Menubutton(my_w,text='My Menu',
  activebackground='lightyellow',font=font1,
  underline=4,relief='raised',width=20)
mb.grid(row=2,column=1,padx=10)

mb.menu=tk.Menu(mb)
mb['menu']=mb.menu
mb.menu.add_command(label='Zoom ++',command=lambda:my_fun('plus'))
mb.menu.add_command(label='Zoom --',command=lambda:my_fun('minus'))
b1=tk.Button(my_w,text='+',command=lambda:my_fun('plus'))
b1.grid(row=2,column=2)
b2=tk.Button(my_w,text='-',command=lambda:my_fun('minus'))
b2.grid(row=2,column=3)

my_w.mainloop()

Using scale

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x300")  
l1 = tk.Label(my_w,text='Your Name', width=10) #added one Label 
l1.grid(row=1,column=1) 
font1=['times',12,'normal']
t1 = tk.Text(my_w,width=10,height=1,font=font1) #text box
t1.grid(row=1,column=2,columnspan=2,pady=10) 
def my_fun(str1):
    if(str1=='plus'):
        font1[1]=font1[1]+2
    else:
        font1[1]=font1[1]-2
    t1.config(font=font1)
def my_fun2(value):
    font1[1]=my_scale1.get()
    t1.config(font=font1)
my_scale1 = tk.Scale(my_w, from_=12, to=26, orient='horizontal',command=my_fun2)
my_scale1.grid(row=2,column=1,padx=4)

b1=tk.Button(my_w,text='+',command=lambda:my_fun('plus'))
b1.grid(row=2,column=2)
b2=tk.Button(my_w,text='-',command=lambda:my_fun('minus'))
b2.grid(row=2,column=3)

my_w.mainloop()

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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