| 1 | #! /usr/bin/env python
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| 2 |
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| 3 | # A Python function that generates dialog boxes with a text message,
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| 4 | # optional bitmap, and any number of buttons.
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| 5 | # Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.2-3, pp. 269-270.
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| 6 |
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| 7 | from Tkinter import *
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| 8 | import sys
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| 9 |
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| 10 |
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| 11 | def dialog(master, title, text, bitmap, default, *args):
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| 12 |
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| 13 | # 1. Create the top-level window and divide it into top
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| 14 | # and bottom parts.
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| 15 |
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| 16 | w = Toplevel(master, class_='Dialog')
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| 17 | w.title(title)
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| 18 | w.iconname('Dialog')
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| 19 |
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| 20 | top = Frame(w, relief=RAISED, borderwidth=1)
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| 21 | top.pack(side=TOP, fill=BOTH)
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| 22 | bot = Frame(w, relief=RAISED, borderwidth=1)
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| 23 | bot.pack(side=BOTTOM, fill=BOTH)
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| 24 |
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| 25 | # 2. Fill the top part with the bitmap and message.
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| 26 |
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| 27 | msg = Message(top, width='3i', text=text,
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| 28 | font='-Adobe-Times-Medium-R-Normal-*-180-*')
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| 29 | msg.pack(side=RIGHT, expand=1, fill=BOTH, padx='3m', pady='3m')
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| 30 | if bitmap:
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| 31 | bm = Label(top, bitmap=bitmap)
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| 32 | bm.pack(side=LEFT, padx='3m', pady='3m')
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| 33 |
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| 34 | # 3. Create a row of buttons at the bottom of the dialog.
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| 35 |
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| 36 | var = IntVar()
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| 37 | buttons = []
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| 38 | i = 0
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| 39 | for but in args:
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| 40 | b = Button(bot, text=but, command=lambda v=var,i=i: v.set(i))
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| 41 | buttons.append(b)
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| 42 | if i == default:
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| 43 | bd = Frame(bot, relief=SUNKEN, borderwidth=1)
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| 44 | bd.pack(side=LEFT, expand=1, padx='3m', pady='2m')
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| 45 | b.lift()
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| 46 | b.pack (in_=bd, side=LEFT,
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| 47 | padx='2m', pady='2m', ipadx='2m', ipady='1m')
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| 48 | else:
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| 49 | b.pack (side=LEFT, expand=1,
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| 50 | padx='3m', pady='3m', ipadx='2m', ipady='1m')
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| 51 | i = i+1
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| 52 |
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| 53 | # 4. Set up a binding for <Return>, if there's a default,
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| 54 | # set a grab, and claim the focus too.
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| 55 |
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| 56 | if default >= 0:
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| 57 | w.bind('<Return>',
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| 58 | lambda e, b=buttons[default], v=var, i=default:
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| 59 | (b.flash(),
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| 60 | v.set(i)))
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| 61 |
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| 62 | oldFocus = w.focus_get()
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| 63 | w.grab_set()
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| 64 | w.focus_set()
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| 65 |
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| 66 | # 5. Wait for the user to respond, then restore the focus
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| 67 | # and return the index of the selected button.
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| 68 |
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| 69 | w.waitvar(var)
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| 70 | w.destroy()
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| 71 | if oldFocus: oldFocus.focus_set()
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| 72 | return var.get()
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| 73 |
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| 74 | # The rest is the test program.
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| 75 |
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| 76 | def go():
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| 77 | i = dialog(mainWidget,
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| 78 | 'Not Responding',
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| 79 | "The file server isn't responding right now; "
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| 80 | "I'll keep trying.",
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| 81 | '',
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| 82 | -1,
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| 83 | 'OK')
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| 84 | print 'pressed button', i
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| 85 | i = dialog(mainWidget,
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| 86 | 'File Modified',
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| 87 | 'File "tcl.h" has been modified since '
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| 88 | 'the last time it was saved. '
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| 89 | 'Do you want to save it before exiting the application?',
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| 90 | 'warning',
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| 91 | 0,
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| 92 | 'Save File',
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| 93 | 'Discard Changes',
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| 94 | 'Return To Editor')
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| 95 | print 'pressed button', i
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| 96 |
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| 97 | def test():
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| 98 | import sys
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| 99 | global mainWidget
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| 100 | mainWidget = Frame()
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| 101 | Pack.config(mainWidget)
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| 102 | start = Button(mainWidget, text='Press Here To Start', command=go)
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| 103 | start.pack()
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| 104 | endit = Button(mainWidget, text="Exit", command=sys.exit)
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| 105 | endit.pack(fill=BOTH)
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| 106 | mainWidget.mainloop()
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| 107 |
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| 108 | if __name__ == '__main__':
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| 109 | test()
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