How to Center Align Text in Text Widget in Tkinter Python

Center Align Text in Text Widget in Tkinter Python

In Tkinter, the Text widget provides a multi-line text area where users can enter and display text. By default, the text is left-aligned, but we can center align the text using the tag_configure method with the justify option.

To center align text in a Tkinter Text widget, we:

• Use the tag_configure method to define a text tag with justify="center".
• Insert the text and apply the tag using text_widget.insert("1.0", "Your text here") and text_widget.tag_add("center", "1.0", "end").

In this tutorial, we will go through multiple examples of center-aligning text inside a Tkinter Text Widget.

Examples

1. Center Aligning Single-Line Text

In this example, we create a Tkinter Text widget and align the text to the center.

We define a Text widget inside the main Tkinter window and apply a tag named center using tag_configure with justify="center". Then, we insert text using insert() and apply the tag using tag_add() to ensure the text is center-aligned.

main.py

import tkinter as tk

# Create main window
root = tk.Tk()
root.title("Tkinter Center Align Text - tutorialkart.com")
root.geometry("400x200")

# Create Text widget
text_widget = tk.Text(root, height=3, width=40)
text_widget.pack(pady=20)

# Configure tag to center align text
text_widget.tag_configure("center", justify="center")

# Insert text and apply center alignment
text_widget.insert("1.0", "Welcome to Tkinter!")
text_widget.tag_add("center", "1.0", "end")

root.mainloop()

Output in Windows:

The text ‘Welcome to Tkinter!’ is center aligned in the Text Widget.

2. Center Aligning Multiple Lines of Text in Text Widget

In this example, we center-align multiple lines of text inside a Tkinter Text widget.

We create a Text widget, define a tag named center using tag_configure with justify="center", and insert multiple lines of text. The tag_add() method is used to apply the tag across all inserted text, ensuring that every line is centered.

main.py

import tkinter as tk

# Create main window
root = tk.Tk()
root.title("Tkinter Center Align Text - tutorialkart.com")
root.geometry("400x200")

# Create Text widget
text_widget = tk.Text(root, height=5, width=40)
text_widget.pack(pady=20)

# Configure tag to center align text
text_widget.tag_configure("center", justify="center")

# Insert multiple lines of text
text_widget.insert("1.0", "Welcome to Tkinter!\n")
text_widget.insert("2.0", "This text is centered.\n")
text_widget.insert("3.0", "You can add multiple lines.")

# Apply center alignment to all lines
text_widget.tag_add("center", "1.0", "end")

root.mainloop()

Output in Windows:

The text widget has multiple lines, where all the lines are center aligned.

Conclusion

In this tutorial, we explored how to center align text in a Tkinter Text widget using the tag_configure method with the justify="center" option. We applied this technique to:

• A single-line text inside a Text widget.
• Multiple lines of text while maintaining proper center alignment.