| """A simple but flexible modal dialog box.""" | |
| from Tkinter import * | |
| class SimpleDialog: | |
| def __init__(self, master, | |
| text='', buttons=[], default=None, cancel=None, | |
| title=None, class_=None): | |
| if class_: | |
| self.root = Toplevel(master, class_=class_) | |
| else: | |
| self.root = Toplevel(master) | |
| if title: | |
| self.root.title(title) | |
| self.root.iconname(title) | |
| self.message = Message(self.root, text=text, aspect=400) | |
| self.message.pack(expand=1, fill=BOTH) | |
| self.frame = Frame(self.root) | |
| self.frame.pack() | |
| self.num = default | |
| self.cancel = cancel | |
| self.default = default | |
| self.root.bind('<Return>', self.return_event) | |
| for num in range(len(buttons)): | |
| s = buttons[num] | |
| b = Button(self.frame, text=s, | |
| command=(lambda self=self, num=num: self.done(num))) | |
| if num == default: | |
| b.config(relief=RIDGE, borderwidth=8) | |
| b.pack(side=LEFT, fill=BOTH, expand=1) | |
| self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window) | |
| self._set_transient(master) | |
| def _set_transient(self, master, relx=0.5, rely=0.3): | |
| widget = self.root | |
| widget.withdraw() # Remain invisible while we figure out the geometry | |
| widget.transient(master) | |
| widget.update_idletasks() # Actualize geometry information | |
| if master.winfo_ismapped(): | |
| m_width = master.winfo_width() | |
| m_height = master.winfo_height() | |
| m_x = master.winfo_rootx() | |
| m_y = master.winfo_rooty() | |
| else: | |
| m_width = master.winfo_screenwidth() | |
| m_height = master.winfo_screenheight() | |
| m_x = m_y = 0 | |
| w_width = widget.winfo_reqwidth() | |
| w_height = widget.winfo_reqheight() | |
| x = m_x + (m_width - w_width) * relx | |
| y = m_y + (m_height - w_height) * rely | |
| if x+w_width > master.winfo_screenwidth(): | |
| x = master.winfo_screenwidth() - w_width | |
| elif x < 0: | |
| x = 0 | |
| if y+w_height > master.winfo_screenheight(): | |
| y = master.winfo_screenheight() - w_height | |
| elif y < 0: | |
| y = 0 | |
| widget.geometry("+%d+%d" % (x, y)) | |
| widget.deiconify() # Become visible at the desired location | |
| def go(self): | |
| self.root.wait_visibility() | |
| self.root.grab_set() | |
| self.root.mainloop() | |
| self.root.destroy() | |
| return self.num | |
| def return_event(self, event): | |
| if self.default is None: | |
| self.root.bell() | |
| else: | |
| self.done(self.default) | |
| def wm_delete_window(self): | |
| if self.cancel is None: | |
| self.root.bell() | |
| else: | |
| self.done(self.cancel) | |
| def done(self, num): | |
| self.num = num | |
| self.root.quit() | |
| if __name__ == '__main__': | |
| def test(): | |
| root = Tk() | |
| def doit(root=root): | |
| d = SimpleDialog(root, | |
| text="This is a test dialog. " | |
| "Would this have been an actual dialog, " | |
| "the buttons below would have been glowing " | |
| "in soft pink light.\n" | |
| "Do you believe this?", | |
| buttons=["Yes", "No", "Cancel"], | |
| default=0, | |
| cancel=2, | |
| title="Test Dialog") | |
| print d.go() | |
| t = Button(root, text='Test', command=doit) | |
| t.pack() | |
| q = Button(root, text='Quit', command=t.quit) | |
| q.pack() | |
| t.mainloop() | |
| test() |