63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
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from tkinter import *
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from tkinter import ttk
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def calculate(*args):
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try:
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stringvalue = feet.get()
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stringvalue = stringvalue.replace(",",".")
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value = float(stringvalue)
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m_value = 0.3048 * value
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m_value = round(m_value, 2)
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meters.set(m_value)
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except ValueError:
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pass
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return True
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# Hauptfenster
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root = Tk()
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root.title("Feet to Meters")
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# Rahmen im Hauptfenster (aus ttk für Farbanpassung)
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mainframe = ttk.Frame(root, padding = "3 3 12 12")
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mainframe.grid(column = 0, row = 0, sticky = (N,W,E,S))
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root.columnconfigure(0, weight = 1)
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root.rowconfigure(0, weight = 1)
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# Eingabefeld für Länge in feet
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feet = StringVar()
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feet_entry = ttk.Entry(mainframe, width = 7, textvariable = feet)
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feet_entry.grid(column = 2, row = 1, sticky = (W, E))
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# Einheit-Label für Eingabefeld der Länge in feet
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ttk.Label(mainframe, text = "feet").grid(column = 3, row = 1, sticky = W)
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# Label für Ausgabefeld der Länge in Metern
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ttk.Label(mainframe, text = "ist äquivalent zu").grid(column = 1, row = 2, sticky = E)
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# Einheit-Label für Ausgabefeld der Länge in Metern
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ttk.Label(mainframe, text = "Meter").grid(column = 3, row = 2, sticky = W)
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# Ausgabefeld für Länge in Metern
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meters = StringVar()
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meters_entry = ttk.Entry(mainframe, width = 7, textvariable = meters)
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meters_entry.grid(column = 2, row = 2, sticky = (W,E))
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meters_entry.configure(state = 'disabled') # keine Eingabe, aber selektierbar
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# Button für Berechnung
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button_calc = ttk.Button(mainframe, text = "Berechne", command = calculate)
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button_calc.grid(column = 3, row = 3, sticky = W)
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# schönere Abstände
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for child in mainframe.winfo_children():
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child.grid_configure(padx = 5, pady = 5)
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# Setze Fokus in Eingabefeld
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feet_entry.focus()
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root.bind("<Return>", calculate)
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root.bind("<KP_Enter>", calculate)
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root.mainloop()
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