| 1 | """A simple but flexible modal dialog box."""
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| 2 |
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| 3 |
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| 4 | from Tkinter import *
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| 5 |
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| 6 |
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| 7 | class SimpleDialog:
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| 8 |
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| 9 | def __init__(self, master,
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| 10 | text='', buttons=[], default=None, cancel=None,
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| 11 | title=None, class_=None):
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| 12 | if class_:
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| 13 | self.root = Toplevel(master, class_=class_)
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| 14 | else:
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| 15 | self.root = Toplevel(master)
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| 16 | if title:
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| 17 | self.root.title(title)
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| 18 | self.root.iconname(title)
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| 19 | self.message = Message(self.root, text=text, aspect=400)
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| 20 | self.message.pack(expand=1, fill=BOTH)
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| 21 | self.frame = Frame(self.root)
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| 22 | self.frame.pack()
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| 23 | self.num = default
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| 24 | self.cancel = cancel
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| 25 | self.default = default
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| 26 | self.root.bind('<Return>', self.return_event)
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| 27 | for num in range(len(buttons)):
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| 28 | s = buttons[num]
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| 29 | b = Button(self.frame, text=s,
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| 30 | command=(lambda self=self, num=num: self.done(num)))
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| 31 | if num == default:
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| 32 | b.config(relief=RIDGE, borderwidth=8)
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| 33 | b.pack(side=LEFT, fill=BOTH, expand=1)
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| 34 | self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window)
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| 35 | self._set_transient(master)
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| 36 |
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| 37 | def _set_transient(self, master, relx=0.5, rely=0.3):
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| 38 | widget = self.root
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| 39 | widget.withdraw() # Remain invisible while we figure out the geometry
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| 40 | widget.transient(master)
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| 41 | widget.update_idletasks() # Actualize geometry information
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| 42 | if master.winfo_ismapped():
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| 43 | m_width = master.winfo_width()
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| 44 | m_height = master.winfo_height()
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| 45 | m_x = master.winfo_rootx()
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| 46 | m_y = master.winfo_rooty()
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| 47 | else:
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| 48 | m_width = master.winfo_screenwidth()
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| 49 | m_height = master.winfo_screenheight()
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| 50 | m_x = m_y = 0
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| 51 | w_width = widget.winfo_reqwidth()
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| 52 | w_height = widget.winfo_reqheight()
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| 53 | x = m_x + (m_width - w_width) * relx
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| 54 | y = m_y + (m_height - w_height) * rely
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| 55 | if x+w_width > master.winfo_screenwidth():
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| 56 | x = master.winfo_screenwidth() - w_width
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| 57 | elif x < 0:
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| 58 | x = 0
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| 59 | if y+w_height > master.winfo_screenheight():
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| 60 | y = master.winfo_screenheight() - w_height
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| 61 | elif y < 0:
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| 62 | y = 0
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| 63 | widget.geometry("+%d+%d" % (x, y))
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| 64 | widget.deiconify() # Become visible at the desired location
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| 65 |
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| 66 | def go(self):
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| 67 | self.root.wait_visibility()
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| 68 | self.root.grab_set()
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| 69 | self.root.mainloop()
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| 70 | self.root.destroy()
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| 71 | return self.num
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| 72 |
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| 73 | def return_event(self, event):
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| 74 | if self.default is None:
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| 75 | self.root.bell()
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| 76 | else:
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| 77 | self.done(self.default)
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| 78 |
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| 79 | def wm_delete_window(self):
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| 80 | if self.cancel is None:
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| 81 | self.root.bell()
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| 82 | else:
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| 83 | self.done(self.cancel)
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| 84 |
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| 85 | def done(self, num):
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| 86 | self.num = num
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| 87 | self.root.quit()
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| 88 |
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| 89 |
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| 90 | if __name__ == '__main__':
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| 91 |
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| 92 | def test():
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| 93 | root = Tk()
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| 94 | def doit(root=root):
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| 95 | d = SimpleDialog(root,
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| 96 | text="This is a test dialog. "
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| 97 | "Would this have been an actual dialog, "
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| 98 | "the buttons below would have been glowing "
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| 99 | "in soft pink light.\n"
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| 100 | "Do you believe this?",
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| 101 | buttons=["Yes", "No", "Cancel"],
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| 102 | default=0,
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| 103 | cancel=2,
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| 104 | title="Test Dialog")
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| 105 | print d.go()
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| 106 | t = Button(root, text='Test', command=doit)
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| 107 | t.pack()
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| 108 | q = Button(root, text='Quit', command=t.quit)
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| 109 | q.pack()
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| 110 | t.mainloop()
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| 111 |
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| 112 | test()
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