Demo/tkinter/ttk/theme_selector.py

   1 """Ttk Theme Selector v2.
   2
   3 This is an improvement from the other theme selector (themes_combo.py)
   4 since now you can notice theme changes in Ttk Combobox, Ttk Frame,
   5 Ttk Label and Ttk Button.
   6 """
   7 import Tkinter
   8 import ttk
   9
  10 class App(ttk.Frame):
  11     def __init__(self):
  12         ttk.Frame.__init__(self, borderwidth=3)
  13
  14         self.style = ttk.Style()
  15
  16         # XXX Ideally I wouldn't want to create a Tkinter.IntVar to make
  17         #     it works with Checkbutton variable option.
  18         self.theme_autochange = Tkinter.IntVar(self, 0)
  19         self._setup_widgets()
  20
  21     def _change_theme(self):
  22         self.style.theme_use(self.themes_combo.get())
  23
  24     def _theme_sel_changed(self, widget):
  25         if self.theme_autochange.get():
  26             self._change_theme()
  27
  28     def _setup_widgets(self):
  29         themes_lbl = ttk.Label(self, text="Themes")
  30
  31         themes = self.style.theme_names()
  32         self.themes_combo = ttk.Combobox(self, values=themes, state="readonly")
  33         self.themes_combo.set(themes[0])
  34         self.themes_combo.bind("<<ComboboxSelected>>", self._theme_sel_changed)
  35
  36         change_btn = ttk.Button(self, text='Change Theme',
  37             command=self._change_theme)
  38
  39         theme_change_checkbtn = ttk.Checkbutton(self,
  40             text="Change themes when combobox item is activated",
  41             variable=self.theme_autochange)
  42
  43         themes_lbl.grid(ipadx=6, sticky="w")
  44         self.themes_combo.grid(row=0, column=1, padx=6, sticky="ew")
  45         change_btn.grid(row=0, column=2, padx=6, sticky="e")
  46         theme_change_checkbtn.grid(row=1, columnspan=3, sticky="w", pady=6)
  47
  48         top = self.winfo_toplevel()
  49         top.rowconfigure(0, weight=1)
  50         top.columnconfigure(0, weight=1)
  51         self.columnconfigure(1, weight=1)
  52         self.grid(row=0, column=0, sticky="nsew", columnspan=3, rowspan=2)
  53
  54
  55 def main():
  56     app = App()
  57     app.master.title("Theme Selector")
  58     app.mainloop()
  59
  60 if __name__ == "__main__":
  61     main()