Specify the dimensions of a Tkinter text box in pixels

You can specify the exact dimensions of a Tkinter text box in pixels using the place() geometry manager. This method allows precise control over widget positioning and sizing by providing pixel-level coordinates and dimensions.

Using place() Geometry Manager

The place() geometry manager positions widgets using absolute coordinates and pixel dimensions. It accepts parameters like x, y for position and width, height for size.

Example

Here's how to create a text widget with specific pixel dimensions ?

import tkinter as tk

# Create the main window
win = tk.Tk()
win.geometry("700x350")
win.title("Text Widget with Pixel Dimensions")

# Create a Text widget with specific pixel dimensions
text_widget = tk.Text(win, wrap=tk.WORD, font=('Courier', 12, 'bold'))

# Insert sample text
sample_text = "This is a text widget positioned at x=10, y=10 with width=400px and height=200px."
text_widget.insert(tk.END, sample_text)

# Place the text widget with exact pixel dimensions
text_widget.place(x=10, y=10, width=400, height=200)

# Add a second text widget for comparison
text_widget2 = tk.Text(win, wrap=tk.WORD, font=('Arial', 10))
text_widget2.insert(tk.END, "Second text widget at different position and size.")
text_widget2.place(x=450, y=50, width=200, height=150)

win.mainloop()

Parameters Explanation

The place() method accepts the following pixel-based parameters ?

Alternative Methods

Using grid() with Configure

You can also set pixel dimensions using configure() method ?

import tkinter as tk

win = tk.Tk()
win.geometry("500x300")

text_widget = tk.Text(win)
text_widget.grid(row=0, column=0, padx=10, pady=10)

# Configure dimensions after placement
text_widget.configure(width=50, height=15)  # Characters, not pixels
text_widget.insert(tk.END, "Text with character-based dimensions")

win.mainloop()

Dynamic Resizing

You can change text widget dimensions dynamically during runtime ?

import tkinter as tk

def resize_text():
    # Change dimensions dynamically
    text_widget.place(width=500, height=250)

win = tk.Tk()
win.geometry("600x400")

text_widget = tk.Text(win, wrap=tk.WORD)
text_widget.insert(tk.END, "Click the button to resize this text widget!")
text_widget.place(x=50, y=50, width=300, height=150)

# Button to trigger resize
resize_btn = tk.Button(win, text="Resize Text Widget", command=resize_text)
resize_btn.place(x=50, y=220)

win.mainloop()

Key Points

• Use place() for pixel-perfect positioning and sizing
• Coordinates start from (0,0) at the top-left corner
• The place() method provides absolute positioning
• Other geometry managers like grid() and pack() use different sizing units

Conclusion

The place() geometry manager gives you precise control over text widget dimensions in pixels. Use the width and height parameters to specify exact pixel dimensions, and x, y for positioning.