Sun-Valley-ttk-theme

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Installation

The theme is easily installable as a Python package

pip install sv-ttk

Usage

import tkinter as tk
import sv_ttk

root = tk.Tk()

sv_ttk.set_theme("light")  # Set light theme
sv_ttk.set_theme("dark")  # Set dark theme

sv_ttk.use_light_theme()  # Set light theme
sv_ttk.use_dark_theme()  # Set dark theme

sv_ttk.toggle_theme()  # Toggle between dark and light theme

print(sv_ttk.get_theme())  # Get what theme the app uses (either 'light' or 'dark')

root.mainloop()

Usage with Tcl/Tk

To make setting the theme and the right colours as easy as possible, there is a separate script that handles all this. This way whether you want to use a dark or light theme, you need to import just a single file, and the colors will be configured even for non-ttk widgets for a consistent look.

source sun-valley.tcl

set_theme light  ;# Set light theme
# or
set_theme dark  ;# Set dark theme

Switching themes

Normally changing between themes isn't that easy, because then the colors doesn't get configured correctly. See this SO question. However, with my current solution, you can change theme at any time, without any color issues.

package require Tk 8.6
source "sun-valley.tcl"

set_theme light

# Pack a big frame so, it behaves like the window background
ttk::frame .big_frame
pack .big_frame -fill both -expand 1

proc changeTheme {} {
    # NOTE: The theme's real name is sun-valley-<mode>
    if {[ttk::style theme use] == "sun-valley-dark"} {
        # Set light theme
        set_theme light
    } else {
        # Set dark theme
        set_theme dark
    }
}

ttk::button .big_frame.button -text "Change theme!" -command changeTheme
pack .big_frame.button

Bugs

• Tk isn't really good at displaying png images, so if your program is laggy with the theme, please check out the gif-based branch! (hasn't been updated for a while)
• When you change the theme, and your app has a treeview, the window resizes. This is a quite strange bug that applies to other ttk themes too.

Examples

I made a separate repo for the examples: Sun-Valley-ttk-examples. Be sure to star and watch it because I might make some more examples, with awesome tips and tricks!

What's next?

Check out my other ttk themes!

• Azure ttk theme
• Forest ttk theme