Color substring of text among Textbox

[MoritzNekolla]

Hello,

is there a possibility to color just a substring of the text inside a customtinker.Textbox? Or highlight it otherwise?

In plain tkinter this is possible like so:

import tkinter as tk

# Create a new tkinter window
root = tk.Tk()

# Create a Text widget
text_widget = tk.Text(root, height=10, width=50)
text_widget.pack()

# Add text to the Text widget
text_widget.insert('end', 'This is some colored text.\n')

# Add a tag to color a substring
text_widget.tag_add('color', '1.5', '1.11') # '1.5' means first line, 5th character; '1.11' means first line, 11th character

# Configure the tag to set the text color
text_widget.tag_configure('color', foreground='red')

# Run the tkinter event loop
root.mainloop()

However customtinker only provides the text_color parameter, which colors the whole Text.

Any ideas?

[TomSchimansky]

Works fine, but the method is called tag_config as in the tkinter docs. It's really confusing in tkinter that there exist multiple names for the same method. I only wrapped tag_config for CustomTkinter.

import customtkinter

app = customtkinter.CTk()

text_widget = customtkinter.CTkTextbox(app)
text_widget.pack()

text_widget.insert('end', 'This is some colored text.\n')
text_widget.tag_add('color', '1.5', '1.11')  # '1.5' means first line, 5th character; '1.11' means first line, 11th character
text_widget.tag_config('color', foreground='red')

app.mainloop()

[UltronXx]

How do you get first line, 10th character?

[MoritzNekolla]

text_widget.tag_add('color', '1.10', '1.11') i guess

[UltronXx]

Yes... I didn't know it was a string argument
Thank you!!!!

[MoritzNekolla]

@TomSchimansky

Could you explain how I color substrings of a CTkLabel as well? tag_add() does not work here neither does Latex Strings.

Thanks in advance

[Wizard0f0zz]

Hi,
I have written a code to append text in the textbox with different styles.

import customtkinter as ctk
global textbox

def insert_styled_text(textbox, text, color="black"):
    match color:
        case 'black':
            tag_name = 'black'
            textbox.tag_config(tag_name, foreground=color)
        case 'blue':
            tag_name = 'blue'
            textbox.tag_config(tag_name, foreground=color, overstrike=True)
        case 'red':
            tag_name = 'red'
            textbox.tag_config(tag_name, foreground=color, underline=True)

    textbox.insert("end", text, tag_name)
    textbox.yview_moveto(1)

def create_app():
    root = ctk.CTk()
    textbox = ctk.CTkTextbox(root, width=400, height=200, fg_color='white')
    textbox.pack(padx=10, pady=10)

    # Insert text with styles

    insert_styled_text(textbox, "Hello, World! ", color="blue", )
    insert_styled_text(textbox, "This is custom text.", color="red")
    insert_styled_text(textbox, "This is some more custom text.\n")
    root.mainloop()

# Run the App
create_app()

I can create multiple tags to generate different styles, but unable to add bold and italics as tag_config does not support it.
Alternatively I tried to add it to the font in defining the CTkTextbox, but it bolds all the text in the textbox.
underline and overstrike works as shown in the code above. Is there a way I can partially make the text bold or in italics?

Any help will be greatly appreciated.
Thank you.
Cheers!!

[dipeshSam]

@Wizard0f0zz Here is the solution: #2463 (reply in thread)

Regards.

[Wizard0f0zz]

Thank you so much Dipesh. It worked perfectly.

[dipeshSam]

@Wizard0f0zz You are most welcome.