47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
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"""Ttk Theme Selector.
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Although it is a theme selector, you won't notice many changes since
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there is only a combobox and a frame around.
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"""
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from tkinter import ttk
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class App(ttk.Frame):
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def __init__(self):
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ttk.Frame.__init__(self)
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self.style = ttk.Style()
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self._setup_widgets()
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def _change_theme(self, event):
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if event.widget.current(): # value #0 is not a theme
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newtheme = event.widget.get()
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# change to the new theme and refresh all the widgets
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self.style.theme_use(newtheme)
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def _setup_widgets(self):
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themes = list(self.style.theme_names())
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themes.insert(0, "Pick a theme")
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# Create a readonly Combobox which will display 4 values at max,
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# which will cause it to create a scrollbar if there are more
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# than 4 values in total.
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themes_combo = ttk.Combobox(self, values=themes, state="readonly",
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height=4)
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themes_combo.set(themes[0]) # sets the combobox value to "Pick a theme"
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# Combobox widget generates a <<ComboboxSelected>> virtual event
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# when the user selects an element. This event is generated after
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# the listbox is unposted (after you select an item, the combobox's
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# listbox disappears, then it is said that listbox is now unposted).
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themes_combo.bind("<<ComboboxSelected>>", self._change_theme)
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themes_combo.pack(fill='x')
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self.pack(fill='both', expand=1)
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def main():
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app = App()
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app.master.title("Ttk Combobox")
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app.mainloop()
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if __name__ == "__main__":
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main()
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