Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 1 | """A simple but flexible modal dialog box.""" |
| 2 | |
| 3 | |
| 4 | from Tkinter import * |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 5 | |
| 6 | |
| 7 | class SimpleDialog: |
| 8 | |
| 9 | def __init__(self, master, |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 10 | text='', buttons=[], default=None, cancel=None, |
| 11 | title=None, class_=None): |
| 12 | if class_: |
| 13 | self.root = Toplevel(master, class_=class_) |
| 14 | else: |
| 15 | self.root = Toplevel(master) |
| 16 | if title: |
| 17 | self.root.title(title) |
| 18 | self.root.iconname(title) |
| 19 | self.message = Message(self.root, text=text, aspect=400) |
| 20 | self.message.pack(expand=1, fill=BOTH) |
| 21 | self.frame = Frame(self.root) |
| 22 | self.frame.pack() |
| 23 | self.num = default |
| 24 | self.cancel = cancel |
| 25 | self.default = default |
| 26 | self.root.bind('<Return>', self.return_event) |
| 27 | for num in range(len(buttons)): |
| 28 | s = buttons[num] |
| 29 | b = Button(self.frame, text=s, |
| 30 | command=(lambda self=self, num=num: self.done(num))) |
| 31 | if num == default: |
| 32 | b.config(relief=RIDGE, borderwidth=8) |
| 33 | b.pack(side=LEFT, fill=BOTH, expand=1) |
| 34 | self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window) |
| 35 | self._set_transient(master) |
Guido van Rossum | 17f2b2d | 1996-07-21 02:20:06 +0000 | [diff] [blame] | 36 | |
| 37 | def _set_transient(self, master, relx=0.5, rely=0.3): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 38 | widget = self.root |
| 39 | widget.withdraw() # Remain invisible while we figure out the geometry |
| 40 | widget.transient(master) |
| 41 | widget.update_idletasks() # Actualize geometry information |
| 42 | if master.winfo_ismapped(): |
| 43 | m_width = master.winfo_width() |
| 44 | m_height = master.winfo_height() |
| 45 | m_x = master.winfo_rootx() |
| 46 | m_y = master.winfo_rooty() |
| 47 | else: |
| 48 | m_width = master.winfo_screenwidth() |
| 49 | m_height = master.winfo_screenheight() |
| 50 | m_x = m_y = 0 |
| 51 | w_width = widget.winfo_reqwidth() |
| 52 | w_height = widget.winfo_reqheight() |
| 53 | x = m_x + (m_width - w_width) * relx |
| 54 | y = m_y + (m_height - w_height) * rely |
| 55 | if x+w_width > master.winfo_screenwidth(): |
| 56 | x = master.winfo_screenwidth() - w_width |
| 57 | elif x < 0: |
| 58 | x = 0 |
| 59 | if y+w_height > master.winfo_screenheight(): |
| 60 | y = master.winfo_screenheight() - w_height |
| 61 | elif y < 0: |
| 62 | y = 0 |
| 63 | widget.geometry("+%d+%d" % (x, y)) |
| 64 | widget.deiconify() # Become visible at the desired location |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 65 | |
| 66 | def go(self): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 67 | self.root.grab_set() |
| 68 | self.root.mainloop() |
| 69 | self.root.destroy() |
| 70 | return self.num |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 71 | |
| 72 | def return_event(self, event): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 73 | if self.default is None: |
| 74 | self.root.bell() |
| 75 | else: |
| 76 | self.done(self.default) |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 77 | |
| 78 | def wm_delete_window(self): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 79 | if self.cancel is None: |
| 80 | self.root.bell() |
| 81 | else: |
| 82 | self.done(self.cancel) |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 83 | |
| 84 | def done(self, num): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 85 | self.num = num |
| 86 | self.root.quit() |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 87 | |
| 88 | |
| 89 | def test(): |
| 90 | root = Tk() |
| 91 | def doit(root=root): |
Guido van Rossum | c457048 | 1998-03-20 20:45:49 +0000 | [diff] [blame] | 92 | d = SimpleDialog(root, |
| 93 | text="This is a test dialog. " |
| 94 | "Would this have been an actual dialog, " |
| 95 | "the buttons below would have been glowing " |
| 96 | "in soft pink light.\n" |
| 97 | "Do you believe this?", |
| 98 | buttons=["Yes", "No", "Cancel"], |
| 99 | default=0, |
| 100 | cancel=2, |
| 101 | title="Test Dialog") |
| 102 | print d.go() |
Guido van Rossum | 990e619 | 1996-06-17 17:14:46 +0000 | [diff] [blame] | 103 | t = Button(root, text='Test', command=doit) |
| 104 | t.pack() |
| 105 | q = Button(root, text='Quit', command=t.quit) |
| 106 | q.pack() |
| 107 | t.mainloop() |
| 108 | |
| 109 | |
| 110 | if __name__ == '__main__': |
| 111 | test() |