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"""Ttk Theme Selector v2.
This is an improvement from the other theme selector (themes_combo.py)
since now you can notice theme changes in Ttk Combobox, Ttk Frame,
Ttk Label and Ttk Button.
"""
import tkinter
from tkinter import ttk
class App(ttk.Frame):
def __init__(self):
ttk.Frame.__init__(self, borderwidth=3)
self.style = ttk.Style()
# XXX Ideally I wouldn't want to create a Tkinter.IntVar to make
# it works with Checkbutton variable option.
self.theme_autochange = tkinter.IntVar(self, 0)
self._setup_widgets()
def _change_theme(self):
self.style.theme_use(self.themes_combo.get())
def _theme_sel_changed(self, widget):
if self.theme_autochange.get():
self._change_theme()
def _setup_widgets(self):
themes_lbl = ttk.Label(self, text="Themes")
themes = self.style.theme_names()
self.themes_combo = ttk.Combobox(self, values=themes, state="readonly")
self.themes_combo.set(themes[0])
self.themes_combo.bind("<<ComboboxSelected>>", self._theme_sel_changed)
change_btn = ttk.Button(self, text='Change Theme',
command=self._change_theme)
theme_change_checkbtn = ttk.Checkbutton(self,
text="Change themes when combobox item is activated",
variable=self.theme_autochange)
themes_lbl.grid(ipadx=6, sticky="w")
self.themes_combo.grid(row=0, column=1, padx=6, sticky="ew")
change_btn.grid(row=0, column=2, padx=6, sticky="e")
theme_change_checkbtn.grid(row=1, columnspan=3, sticky="w", pady=6)
top = self.winfo_toplevel()
top.rowconfigure(0, weight=1)
top.columnconfigure(0, weight=1)
self.columnconfigure(1, weight=1)
self.grid(row=0, column=0, sticky="nsew", columnspan=3, rowspan=2)
def main():
app = App()
app.master.title("Theme Selector")
app.mainloop()
if __name__ == "__main__":
main()
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